4379 lines
117 KiB
C++
4379 lines
117 KiB
C++
// Copyright 2015 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <array>
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#include <cinttypes>
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#include <cstring>
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#include <vector>
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#include "Common/Align.h"
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#include "Common/Arm64Emitter.h"
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#include "Common/Assert.h"
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#include "Common/CommonTypes.h"
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namespace Arm64Gen
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{
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const int kWRegSizeInBits = 32;
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const int kXRegSizeInBits = 64;
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// The below few functions are taken from V8.
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static int CountLeadingZeros(uint64_t value, int width)
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{
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// TODO(jbramley): Optimize this for ARM64 hosts.
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int count = 0;
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uint64_t bit_test = 1ULL << (width - 1);
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while ((count < width) && ((bit_test & value) == 0))
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{
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count++;
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bit_test >>= 1;
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}
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return count;
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}
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static uint64_t LargestPowerOf2Divisor(uint64_t value)
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{
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return value & -(int64_t)value;
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}
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static bool IsPowerOfTwo(uint64_t x)
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{
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return (x != 0) && ((x & (x - 1)) == 0);
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}
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#define V8_UINT64_C(x) ((uint64_t)(x))
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bool IsImmArithmetic(uint64_t input, u32* val, bool* shift)
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{
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if (input < 4096)
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{
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*val = input;
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*shift = false;
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return true;
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}
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else if ((input & 0xFFF000) == input)
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{
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*val = input >> 12;
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*shift = true;
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return true;
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}
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return false;
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}
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bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned int* imm_s,
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unsigned int* imm_r)
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{
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// DCHECK((n != NULL) && (imm_s != NULL) && (imm_r != NULL));
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// DCHECK((width == kWRegSizeInBits) || (width == kXRegSizeInBits));
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bool negate = false;
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// Logical immediates are encoded using parameters n, imm_s and imm_r using
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// the following table:
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//
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// N imms immr size S R
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// 1 ssssss rrrrrr 64 UInt(ssssss) UInt(rrrrrr)
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// 0 0sssss xrrrrr 32 UInt(sssss) UInt(rrrrr)
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// 0 10ssss xxrrrr 16 UInt(ssss) UInt(rrrr)
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// 0 110sss xxxrrr 8 UInt(sss) UInt(rrr)
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// 0 1110ss xxxxrr 4 UInt(ss) UInt(rr)
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// 0 11110s xxxxxr 2 UInt(s) UInt(r)
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// (s bits must not be all set)
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//
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// A pattern is constructed of size bits, where the least significant S+1 bits
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// are set. The pattern is rotated right by R, and repeated across a 32 or
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// 64-bit value, depending on destination register width.
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//
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// Put another way: the basic format of a logical immediate is a single
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// contiguous stretch of 1 bits, repeated across the whole word at intervals
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// given by a power of 2. To identify them quickly, we first locate the
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// lowest stretch of 1 bits, then the next 1 bit above that; that combination
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// is different for every logical immediate, so it gives us all the
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// information we need to identify the only logical immediate that our input
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// could be, and then we simply check if that's the value we actually have.
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//
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// (The rotation parameter does give the possibility of the stretch of 1 bits
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// going 'round the end' of the word. To deal with that, we observe that in
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// any situation where that happens the bitwise NOT of the value is also a
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// valid logical immediate. So we simply invert the input whenever its low bit
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// is set, and then we know that the rotated case can't arise.)
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if (value & 1)
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{
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// If the low bit is 1, negate the value, and set a flag to remember that we
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// did (so that we can adjust the return values appropriately).
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negate = true;
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value = ~value;
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}
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if (width == kWRegSizeInBits)
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{
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// To handle 32-bit logical immediates, the very easiest thing is to repeat
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// the input value twice to make a 64-bit word. The correct encoding of that
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// as a logical immediate will also be the correct encoding of the 32-bit
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// value.
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// The most-significant 32 bits may not be zero (ie. negate is true) so
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// shift the value left before duplicating it.
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value <<= kWRegSizeInBits;
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value |= value >> kWRegSizeInBits;
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}
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// The basic analysis idea: imagine our input word looks like this.
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//
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// 0011111000111110001111100011111000111110001111100011111000111110
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// c b a
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// |<--d-->|
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//
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// We find the lowest set bit (as an actual power-of-2 value, not its index)
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// and call it a. Then we add a to our original number, which wipes out the
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// bottommost stretch of set bits and replaces it with a 1 carried into the
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// next zero bit. Then we look for the new lowest set bit, which is in
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// position b, and subtract it, so now our number is just like the original
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// but with the lowest stretch of set bits completely gone. Now we find the
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// lowest set bit again, which is position c in the diagram above. Then we'll
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// measure the distance d between bit positions a and c (using CLZ), and that
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// tells us that the only valid logical immediate that could possibly be equal
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// to this number is the one in which a stretch of bits running from a to just
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// below b is replicated every d bits.
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uint64_t a = LargestPowerOf2Divisor(value);
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uint64_t value_plus_a = value + a;
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uint64_t b = LargestPowerOf2Divisor(value_plus_a);
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uint64_t value_plus_a_minus_b = value_plus_a - b;
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uint64_t c = LargestPowerOf2Divisor(value_plus_a_minus_b);
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int d, clz_a, out_n;
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uint64_t mask;
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if (c != 0)
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{
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// The general case, in which there is more than one stretch of set bits.
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// Compute the repeat distance d, and set up a bitmask covering the basic
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// unit of repetition (i.e. a word with the bottom d bits set). Also, in all
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// of these cases the N bit of the output will be zero.
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clz_a = CountLeadingZeros(a, kXRegSizeInBits);
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int clz_c = CountLeadingZeros(c, kXRegSizeInBits);
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d = clz_a - clz_c;
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mask = ((V8_UINT64_C(1) << d) - 1);
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out_n = 0;
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}
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else
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{
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// Handle degenerate cases.
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//
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// If any of those 'find lowest set bit' operations didn't find a set bit at
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// all, then the word will have been zero thereafter, so in particular the
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// last lowest_set_bit operation will have returned zero. So we can test for
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// all the special case conditions in one go by seeing if c is zero.
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if (a == 0)
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{
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// The input was zero (or all 1 bits, which will come to here too after we
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// inverted it at the start of the function), for which we just return
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// false.
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return false;
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}
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else
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{
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// Otherwise, if c was zero but a was not, then there's just one stretch
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// of set bits in our word, meaning that we have the trivial case of
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// d == 64 and only one 'repetition'. Set up all the same variables as in
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// the general case above, and set the N bit in the output.
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clz_a = CountLeadingZeros(a, kXRegSizeInBits);
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d = 64;
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mask = ~V8_UINT64_C(0);
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out_n = 1;
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}
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}
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// If the repeat period d is not a power of two, it can't be encoded.
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if (!IsPowerOfTwo(d))
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return false;
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// If the bit stretch (b - a) does not fit within the mask derived from the
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// repeat period, then fail.
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if (((b - a) & ~mask) != 0)
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return false;
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// The only possible option is b - a repeated every d bits. Now we're going to
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// actually construct the valid logical immediate derived from that
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// specification, and see if it equals our original input.
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//
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// To repeat a value every d bits, we multiply it by a number of the form
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// (1 + 2^d + 2^(2d) + ...), i.e. 0x0001000100010001 or similar. These can
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// be derived using a table lookup on CLZ(d).
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static const std::array<uint64_t, 6> multipliers = {{
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0x0000000000000001UL, 0x0000000100000001UL, 0x0001000100010001UL, 0x0101010101010101UL,
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0x1111111111111111UL, 0x5555555555555555UL,
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}};
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int multiplier_idx = CountLeadingZeros(d, kXRegSizeInBits) - 57;
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// Ensure that the index to the multipliers array is within bounds.
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_dbg_assert_(DYNA_REC,
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(multiplier_idx >= 0) && (static_cast<size_t>(multiplier_idx) < multipliers.size()));
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uint64_t multiplier = multipliers[multiplier_idx];
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uint64_t candidate = (b - a) * multiplier;
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// The candidate pattern doesn't match our input value, so fail.
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if (value != candidate)
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return false;
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// We have a match! This is a valid logical immediate, so now we have to
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// construct the bits and pieces of the instruction encoding that generates
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// it.
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// Count the set bits in our basic stretch. The special case of clz(0) == -1
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// makes the answer come out right for stretches that reach the very top of
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// the word (e.g. numbers like 0xffffc00000000000).
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int clz_b = (b == 0) ? -1 : CountLeadingZeros(b, kXRegSizeInBits);
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int s = clz_a - clz_b;
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// Decide how many bits to rotate right by, to put the low bit of that basic
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// stretch in position a.
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int r;
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if (negate)
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{
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// If we inverted the input right at the start of this function, here's
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// where we compensate: the number of set bits becomes the number of clear
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// bits, and the rotation count is based on position b rather than position
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// a (since b is the location of the 'lowest' 1 bit after inversion).
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s = d - s;
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r = (clz_b + 1) & (d - 1);
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}
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else
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{
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r = (clz_a + 1) & (d - 1);
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}
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// Now we're done, except for having to encode the S output in such a way that
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// it gives both the number of set bits and the length of the repeated
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// segment. The s field is encoded like this:
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//
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// imms size S
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// ssssss 64 UInt(ssssss)
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// 0sssss 32 UInt(sssss)
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// 10ssss 16 UInt(ssss)
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// 110sss 8 UInt(sss)
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// 1110ss 4 UInt(ss)
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// 11110s 2 UInt(s)
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//
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// So we 'or' (-d << 1) with our computed s to form imms.
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*n = out_n;
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*imm_s = ((-d << 1) | (s - 1)) & 0x3f;
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*imm_r = r;
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return true;
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}
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void ARM64XEmitter::SetCodePtrUnsafe(u8* ptr)
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{
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m_code = ptr;
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}
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void ARM64XEmitter::SetCodePtr(u8* ptr)
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{
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SetCodePtrUnsafe(ptr);
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m_lastCacheFlushEnd = ptr;
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}
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const u8* ARM64XEmitter::GetCodePtr() const
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{
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return m_code;
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}
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u8* ARM64XEmitter::GetWritableCodePtr()
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{
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return m_code;
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}
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void ARM64XEmitter::ReserveCodeSpace(u32 bytes)
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{
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for (u32 i = 0; i < bytes / 4; i++)
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BRK(0);
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}
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const u8* ARM64XEmitter::AlignCode16()
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{
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int c = int((u64)m_code & 15);
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if (c)
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ReserveCodeSpace(16 - c);
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return m_code;
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}
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const u8* ARM64XEmitter::AlignCodePage()
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{
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int c = int((u64)m_code & 4095);
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if (c)
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ReserveCodeSpace(4096 - c);
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return m_code;
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}
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void ARM64XEmitter::Write32(u32 value)
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{
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std::memcpy(m_code, &value, sizeof(u32));
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m_code += sizeof(u32);
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}
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void ARM64XEmitter::FlushIcache()
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{
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FlushIcacheSection(m_lastCacheFlushEnd, m_code);
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m_lastCacheFlushEnd = m_code;
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}
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void ARM64XEmitter::FlushIcacheSection(u8* start, u8* end)
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{
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if (start == end)
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return;
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#if defined(IOS)
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// Header file says this is equivalent to: sys_icache_invalidate(start, end - start);
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sys_cache_control(kCacheFunctionPrepareForExecution, start, end - start);
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#else
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// Don't rely on GCC's __clear_cache implementation, as it caches
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// icache/dcache cache line sizes, that can vary between cores on
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// big.LITTLE architectures.
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u64 addr, ctr_el0;
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static size_t icache_line_size = 0xffff, dcache_line_size = 0xffff;
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size_t isize, dsize;
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__asm__ volatile("mrs %0, ctr_el0" : "=r"(ctr_el0));
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isize = 4 << ((ctr_el0 >> 0) & 0xf);
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dsize = 4 << ((ctr_el0 >> 16) & 0xf);
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// use the global minimum cache line size
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icache_line_size = isize = icache_line_size < isize ? icache_line_size : isize;
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dcache_line_size = dsize = dcache_line_size < dsize ? dcache_line_size : dsize;
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addr = (u64)start & ~(u64)(dsize - 1);
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for (; addr < (u64)end; addr += dsize)
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// use "civac" instead of "cvau", as this is the suggested workaround for
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// Cortex-A53 errata 819472, 826319, 827319 and 824069.
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__asm__ volatile("dc civac, %0" : : "r"(addr) : "memory");
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__asm__ volatile("dsb ish" : : : "memory");
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addr = (u64)start & ~(u64)(isize - 1);
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for (; addr < (u64)end; addr += isize)
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__asm__ volatile("ic ivau, %0" : : "r"(addr) : "memory");
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__asm__ volatile("dsb ish" : : : "memory");
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__asm__ volatile("isb" : : : "memory");
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#endif
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}
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// Exception generation
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static const u32 ExcEnc[][3] = {
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{0, 0, 1}, // SVC
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{0, 0, 2}, // HVC
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{0, 0, 3}, // SMC
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{1, 0, 0}, // BRK
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{2, 0, 0}, // HLT
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{5, 0, 1}, // DCPS1
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{5, 0, 2}, // DCPS2
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{5, 0, 3}, // DCPS3
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};
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// Arithmetic generation
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static const u32 ArithEnc[] = {
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0x058, // ADD
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0x258, // SUB
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};
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// Conditional Select
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static const u32 CondSelectEnc[][2] = {
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{0, 0}, // CSEL
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{0, 1}, // CSINC
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{1, 0}, // CSINV
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{1, 1}, // CSNEG
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};
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// Data-Processing (1 source)
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static const u32 Data1SrcEnc[][2] = {
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{0, 0}, // RBIT
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{0, 1}, // REV16
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{0, 2}, // REV32
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{0, 3}, // REV64
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{0, 4}, // CLZ
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{0, 5}, // CLS
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};
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// Data-Processing (2 source)
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static const u32 Data2SrcEnc[] = {
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0x02, // UDIV
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0x03, // SDIV
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0x08, // LSLV
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0x09, // LSRV
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0x0A, // ASRV
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0x0B, // RORV
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0x10, // CRC32B
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0x11, // CRC32H
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0x12, // CRC32W
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0x14, // CRC32CB
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0x15, // CRC32CH
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0x16, // CRC32CW
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0x13, // CRC32X (64bit Only)
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0x17, // XRC32CX (64bit Only)
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};
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// Data-Processing (3 source)
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static const u32 Data3SrcEnc[][2] = {
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{0, 0}, // MADD
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{0, 1}, // MSUB
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{1, 0}, // SMADDL (64Bit Only)
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{1, 1}, // SMSUBL (64Bit Only)
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{2, 0}, // SMULH (64Bit Only)
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{5, 0}, // UMADDL (64Bit Only)
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{5, 1}, // UMSUBL (64Bit Only)
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{6, 0}, // UMULH (64Bit Only)
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};
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// Logical (shifted register)
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static const u32 LogicalEnc[][2] = {
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{0, 0}, // AND
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{0, 1}, // BIC
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{1, 0}, // OOR
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{1, 1}, // ORN
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{2, 0}, // EOR
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{2, 1}, // EON
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{3, 0}, // ANDS
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{3, 1}, // BICS
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};
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// Load/Store Exclusive
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static const u32 LoadStoreExcEnc[][5] = {
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{0, 0, 0, 0, 0}, // STXRB
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{0, 0, 0, 0, 1}, // STLXRB
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{0, 0, 1, 0, 0}, // LDXRB
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{0, 0, 1, 0, 1}, // LDAXRB
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{0, 1, 0, 0, 1}, // STLRB
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{0, 1, 1, 0, 1}, // LDARB
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{1, 0, 0, 0, 0}, // STXRH
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{1, 0, 0, 0, 1}, // STLXRH
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{1, 0, 1, 0, 0}, // LDXRH
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{1, 0, 1, 0, 1}, // LDAXRH
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{1, 1, 0, 0, 1}, // STLRH
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{1, 1, 1, 0, 1}, // LDARH
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{2, 0, 0, 0, 0}, // STXR
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{3, 0, 0, 0, 0}, // (64bit) STXR
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{2, 0, 0, 0, 1}, // STLXR
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{3, 0, 0, 0, 1}, // (64bit) STLXR
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{2, 0, 0, 1, 0}, // STXP
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{3, 0, 0, 1, 0}, // (64bit) STXP
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{2, 0, 0, 1, 1}, // STLXP
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{3, 0, 0, 1, 1}, // (64bit) STLXP
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{2, 0, 1, 0, 0}, // LDXR
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{3, 0, 1, 0, 0}, // (64bit) LDXR
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{2, 0, 1, 0, 1}, // LDAXR
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{3, 0, 1, 0, 1}, // (64bit) LDAXR
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{2, 0, 1, 1, 0}, // LDXP
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{3, 0, 1, 1, 0}, // (64bit) LDXP
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|
{2, 0, 1, 1, 1}, // LDAXP
|
|
{3, 0, 1, 1, 1}, // (64bit) LDAXP
|
|
{2, 1, 0, 0, 1}, // STLR
|
|
{3, 1, 0, 0, 1}, // (64bit) STLR
|
|
{2, 1, 1, 0, 1}, // LDAR
|
|
{3, 1, 1, 0, 1}, // (64bit) LDAR
|
|
};
|
|
|
|
void ARM64XEmitter::EncodeCompareBranchInst(u32 op, ARM64Reg Rt, const void* ptr)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
s64 distance = (s64)ptr - (s64)m_code;
|
|
|
|
_assert_msg_(DYNA_REC, !(distance & 0x3), "%s: distance must be a multiple of 4: %" PRIx64,
|
|
__FUNCTION__, distance);
|
|
|
|
distance >>= 2;
|
|
|
|
_assert_msg_(DYNA_REC, distance >= -0x40000 && distance <= 0x3FFFF,
|
|
"%s: Received too large distance: %" PRIx64, __FUNCTION__, distance);
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Write32((b64Bit << 31) | (0x34 << 24) | (op << 24) | (((u32)distance << 5) & 0xFFFFE0) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeTestBranchInst(u32 op, ARM64Reg Rt, u8 bits, const void* ptr)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
s64 distance = (s64)ptr - (s64)m_code;
|
|
|
|
_assert_msg_(DYNA_REC, !(distance & 0x3), "%s: distance must be a multiple of 4: %" PRIx64,
|
|
__FUNCTION__, distance);
|
|
|
|
distance >>= 2;
|
|
|
|
_assert_msg_(DYNA_REC, distance >= -0x3FFF && distance < 0x3FFF,
|
|
"%s: Received too large distance: %" PRIx64, __FUNCTION__, distance);
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Write32((b64Bit << 31) | (0x36 << 24) | (op << 24) | (bits << 19) |
|
|
(((u32)distance << 5) & 0x7FFE0) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeUnconditionalBranchInst(u32 op, const void* ptr)
|
|
{
|
|
s64 distance = (s64)ptr - s64(m_code);
|
|
|
|
_assert_msg_(DYNA_REC, !(distance & 0x3), "%s: distance must be a multiple of 4: %" PRIx64,
|
|
__FUNCTION__, distance);
|
|
|
|
distance >>= 2;
|
|
|
|
_assert_msg_(DYNA_REC, distance >= -0x2000000LL && distance <= 0x1FFFFFFLL,
|
|
"%s: Received too large distance: %" PRIx64, __FUNCTION__, distance);
|
|
|
|
Write32((op << 31) | (0x5 << 26) | (distance & 0x3FFFFFF));
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeUnconditionalBranchInst(u32 opc, u32 op2, u32 op3, u32 op4, ARM64Reg Rn)
|
|
{
|
|
Rn = DecodeReg(Rn);
|
|
Write32((0x6B << 25) | (opc << 21) | (op2 << 16) | (op3 << 10) | (Rn << 5) | op4);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeExceptionInst(u32 instenc, u32 imm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFFF), "%s: Exception instruction too large immediate: %d",
|
|
__FUNCTION__, imm);
|
|
|
|
Write32((0xD4 << 24) | (ExcEnc[instenc][0] << 21) | (imm << 5) | (ExcEnc[instenc][1] << 2) |
|
|
ExcEnc[instenc][2]);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeSystemInst(u32 op0, u32 op1, u32 CRn, u32 CRm, u32 op2, ARM64Reg Rt)
|
|
{
|
|
Write32((0x354 << 22) | (op0 << 19) | (op1 << 16) | (CRn << 12) | (CRm << 8) | (op2 << 5) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeArithmeticInst(u32 instenc, bool flags, ARM64Reg Rd, ARM64Reg Rn,
|
|
ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
Write32((b64Bit << 31) | (flags << 29) | (ArithEnc[instenc] << 21) |
|
|
(Option.GetType() == ArithOption::TYPE_EXTENDEDREG ? (1 << 21) : 0) | (Rm << 16) |
|
|
Option.GetData() | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeArithmeticCarryInst(u32 op, bool flags, ARM64Reg Rd, ARM64Reg Rn,
|
|
ARM64Reg Rm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rm = DecodeReg(Rm);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (op << 30) | (flags << 29) | (0xD0 << 21) | (Rm << 16) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeCondCompareImmInst(u32 op, ARM64Reg Rn, u32 imm, u32 nzcv, CCFlags cond)
|
|
{
|
|
bool b64Bit = Is64Bit(Rn);
|
|
|
|
_assert_msg_(DYNA_REC, !(imm & ~0x1F), "%s: too large immediate: %d", __FUNCTION__, imm)
|
|
_assert_msg_(DYNA_REC, !(nzcv & ~0xF), "%s: Flags out of range: %d", __FUNCTION__, nzcv)
|
|
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (op << 30) | (1 << 29) | (0xD2 << 21) | (imm << 16) | (cond << 12) |
|
|
(1 << 11) | (Rn << 5) | nzcv);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeCondCompareRegInst(u32 op, ARM64Reg Rn, ARM64Reg Rm, u32 nzcv,
|
|
CCFlags cond)
|
|
{
|
|
bool b64Bit = Is64Bit(Rm);
|
|
|
|
_assert_msg_(DYNA_REC, !(nzcv & ~0xF), "%s: Flags out of range: %d", __FUNCTION__, nzcv)
|
|
|
|
Rm = DecodeReg(Rm);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (op << 30) | (1 << 29) | (0xD2 << 21) | (Rm << 16) | (cond << 12) |
|
|
(Rn << 5) | nzcv);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeCondSelectInst(u32 instenc, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm,
|
|
CCFlags cond)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rm = DecodeReg(Rm);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (CondSelectEnc[instenc][0] << 30) | (0xD4 << 21) | (Rm << 16) |
|
|
(cond << 12) | (CondSelectEnc[instenc][1] << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeData1SrcInst(u32 instenc, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (0x2D6 << 21) | (Data1SrcEnc[instenc][0] << 16) |
|
|
(Data1SrcEnc[instenc][1] << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeData2SrcInst(u32 instenc, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rm = DecodeReg(Rm);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (0x0D6 << 21) | (Rm << 16) | (Data2SrcEnc[instenc] << 10) | (Rn << 5) |
|
|
Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeData3SrcInst(u32 instenc, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm,
|
|
ARM64Reg Ra)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rm = DecodeReg(Rm);
|
|
Rn = DecodeReg(Rn);
|
|
Ra = DecodeReg(Ra);
|
|
Write32((b64Bit << 31) | (0xD8 << 21) | (Data3SrcEnc[instenc][0] << 21) | (Rm << 16) |
|
|
(Data3SrcEnc[instenc][1] << 15) | (Ra << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLogicalInst(u32 instenc, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm,
|
|
ArithOption Shift)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rm = DecodeReg(Rm);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (LogicalEnc[instenc][0] << 29) | (0x5 << 25) |
|
|
(LogicalEnc[instenc][1] << 21) | Shift.GetData() | (Rm << 16) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadRegisterInst(u32 bitop, ARM64Reg Rt, u32 imm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
bool bVec = IsVector(Rt);
|
|
|
|
_assert_msg_(DYNA_REC, !(imm & 0xFFFFF), "%s: offset too large %d", __FUNCTION__, imm);
|
|
|
|
Rt = DecodeReg(Rt);
|
|
if (b64Bit && bitop != 0x2) // LDRSW(0x2) uses 64bit reg, doesn't have 64bit bit set
|
|
bitop |= 0x1;
|
|
Write32((bitop << 30) | (bVec << 26) | (0x18 << 24) | (imm << 5) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStoreExcInst(u32 instenc, ARM64Reg Rs, ARM64Reg Rt2, ARM64Reg Rn,
|
|
ARM64Reg Rt)
|
|
{
|
|
Rs = DecodeReg(Rs);
|
|
Rt2 = DecodeReg(Rt2);
|
|
Rn = DecodeReg(Rn);
|
|
Rt = DecodeReg(Rt);
|
|
Write32((LoadStoreExcEnc[instenc][0] << 30) | (0x8 << 24) | (LoadStoreExcEnc[instenc][1] << 23) |
|
|
(LoadStoreExcEnc[instenc][2] << 22) | (LoadStoreExcEnc[instenc][3] << 21) | (Rs << 16) |
|
|
(LoadStoreExcEnc[instenc][4] << 15) | (Rt2 << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStorePairedInst(u32 op, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn,
|
|
u32 imm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
bool b128Bit = IsQuad(Rt);
|
|
bool bVec = IsVector(Rt);
|
|
|
|
if (b128Bit)
|
|
imm >>= 4;
|
|
else if (b64Bit)
|
|
imm >>= 3;
|
|
else
|
|
imm >>= 2;
|
|
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xF), "%s: offset too large %d", __FUNCTION__, imm);
|
|
|
|
u32 opc = 0;
|
|
if (b128Bit)
|
|
opc = 2;
|
|
else if (b64Bit && bVec)
|
|
opc = 1;
|
|
else if (b64Bit && !bVec)
|
|
opc = 2;
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rt2 = DecodeReg(Rt2);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((opc << 30) | (bVec << 26) | (op << 22) | (imm << 15) | (Rt2 << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStoreIndexedInst(u32 op, u32 op2, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
bool bVec = IsVector(Rt);
|
|
|
|
u32 offset = imm & 0x1FF;
|
|
|
|
_assert_msg_(DYNA_REC, !(imm < -256 || imm > 255), "%s: offset too large %d", __FUNCTION__, imm);
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 30) | (op << 22) | (bVec << 26) | (offset << 12) | (op2 << 10) | (Rn << 5) |
|
|
Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStoreIndexedInst(u32 op, ARM64Reg Rt, ARM64Reg Rn, s32 imm, u8 size)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
bool bVec = IsVector(Rt);
|
|
|
|
if (size == 64)
|
|
imm >>= 3;
|
|
else if (size == 32)
|
|
imm >>= 2;
|
|
else if (size == 16)
|
|
imm >>= 1;
|
|
|
|
_assert_msg_(DYNA_REC, imm >= 0, "%s(INDEX_UNSIGNED): offset must be positive %d", __FUNCTION__,
|
|
imm);
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFF), "%s(INDEX_UNSIGNED): offset too large %d", __FUNCTION__,
|
|
imm);
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 30) | (op << 22) | (bVec << 26) | (imm << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeMOVWideInst(u32 op, ARM64Reg Rd, u32 imm, ShiftAmount pos)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFFF), "%s: immediate out of range: %d", __FUNCTION__, imm);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Write32((b64Bit << 31) | (op << 29) | (0x25 << 23) | (pos << 21) | (imm << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeBitfieldMOVInst(u32 op, ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (op << 29) | (0x26 << 23) | (b64Bit << 22) | (immr << 16) |
|
|
(imms << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStoreRegisterOffset(u32 size, u32 opc, ARM64Reg Rt, ARM64Reg Rn,
|
|
ArithOption Rm)
|
|
{
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
ARM64Reg decoded_Rm = DecodeReg(Rm.GetReg());
|
|
|
|
Write32((size << 30) | (opc << 22) | (0x1C1 << 21) | (decoded_Rm << 16) | Rm.GetData() |
|
|
(1 << 11) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeAddSubImmInst(u32 op, bool flags, u32 shift, u32 imm, ARM64Reg Rn,
|
|
ARM64Reg Rd)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFF), "%s: immediate too large: %x", __FUNCTION__, imm);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((b64Bit << 31) | (op << 30) | (flags << 29) | (0x11 << 24) | (shift << 22) | (imm << 10) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLogicalImmInst(u32 op, ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms,
|
|
int n)
|
|
{
|
|
// Sometimes Rd is fixed to SP, but can still be 32bit or 64bit.
|
|
// Use Rn to determine bitness here.
|
|
bool b64Bit = Is64Bit(Rn);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((b64Bit << 31) | (op << 29) | (0x24 << 23) | (n << 22) | (immr << 16) | (imms << 10) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStorePair(u32 op, u32 load, IndexType type, ARM64Reg Rt, ARM64Reg Rt2,
|
|
ARM64Reg Rn, s32 imm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
u32 type_encode = 0;
|
|
|
|
switch (type)
|
|
{
|
|
case INDEX_SIGNED:
|
|
type_encode = 0b010;
|
|
break;
|
|
case INDEX_POST:
|
|
type_encode = 0b001;
|
|
break;
|
|
case INDEX_PRE:
|
|
type_encode = 0b011;
|
|
break;
|
|
case INDEX_UNSIGNED:
|
|
_assert_msg_(DYNA_REC, false, "%s doesn't support INDEX_UNSIGNED!", __FUNCTION__);
|
|
break;
|
|
}
|
|
|
|
if (b64Bit)
|
|
{
|
|
op |= 0b10;
|
|
imm >>= 3;
|
|
}
|
|
else
|
|
{
|
|
imm >>= 2;
|
|
}
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rt2 = DecodeReg(Rt2);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((op << 30) | (0b101 << 27) | (type_encode << 23) | (load << 22) | ((imm & 0x7F) << 15) |
|
|
(Rt2 << 10) | (Rn << 5) | Rt);
|
|
}
|
|
void ARM64XEmitter::EncodeAddressInst(u32 op, ARM64Reg Rd, s32 imm)
|
|
{
|
|
Rd = DecodeReg(Rd);
|
|
|
|
Write32((op << 31) | ((imm & 0x3) << 29) | (0x10 << 24) | ((imm & 0x1FFFFC) << 3) | Rd);
|
|
}
|
|
|
|
void ARM64XEmitter::EncodeLoadStoreUnscaled(u32 size, u32 op, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm < -256 || imm > 255), "%s received too large offset: %d",
|
|
__FUNCTION__, imm);
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((size << 30) | (0b111 << 27) | (op << 22) | ((imm & 0x1FF) << 12) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
static constexpr bool IsInRangeImm19(s64 distance)
|
|
{
|
|
return (distance >= -0x40000 && distance <= 0x3FFFF);
|
|
}
|
|
|
|
static constexpr bool IsInRangeImm14(s64 distance)
|
|
{
|
|
return (distance >= -0x2000 && distance <= 0x1FFF);
|
|
}
|
|
|
|
static constexpr bool IsInRangeImm26(s64 distance)
|
|
{
|
|
return (distance >= -0x2000000 && distance <= 0x1FFFFFF);
|
|
}
|
|
|
|
static constexpr u32 MaskImm19(s64 distance)
|
|
{
|
|
return distance & 0x7FFFF;
|
|
}
|
|
|
|
static constexpr u32 MaskImm14(s64 distance)
|
|
{
|
|
return distance & 0x3FFF;
|
|
}
|
|
|
|
static constexpr u32 MaskImm26(s64 distance)
|
|
{
|
|
return distance & 0x3FFFFFF;
|
|
}
|
|
|
|
// FixupBranch branching
|
|
void ARM64XEmitter::SetJumpTarget(FixupBranch const& branch)
|
|
{
|
|
bool Not = false;
|
|
u32 inst = 0;
|
|
s64 distance = (s64)(m_code - branch.ptr);
|
|
distance >>= 2;
|
|
|
|
switch (branch.type)
|
|
{
|
|
case 1: // CBNZ
|
|
Not = true;
|
|
case 0: // CBZ
|
|
{
|
|
_assert_msg_(DYNA_REC, IsInRangeImm19(distance),
|
|
"%s(%d): Received too large distance: %" PRIx64, __FUNCTION__, branch.type,
|
|
distance);
|
|
bool b64Bit = Is64Bit(branch.reg);
|
|
ARM64Reg reg = DecodeReg(branch.reg);
|
|
inst = (b64Bit << 31) | (0x1A << 25) | (Not << 24) | (MaskImm19(distance) << 5) | reg;
|
|
}
|
|
break;
|
|
case 2: // B (conditional)
|
|
_assert_msg_(DYNA_REC, IsInRangeImm19(distance),
|
|
"%s(%d): Received too large distance: %" PRIx64, __FUNCTION__, branch.type,
|
|
distance);
|
|
inst = (0x2A << 25) | (MaskImm19(distance) << 5) | branch.cond;
|
|
break;
|
|
case 4: // TBNZ
|
|
Not = true;
|
|
case 3: // TBZ
|
|
{
|
|
_assert_msg_(DYNA_REC, IsInRangeImm14(distance),
|
|
"%s(%d): Received too large distance: %" PRIx64, __FUNCTION__, branch.type,
|
|
distance);
|
|
ARM64Reg reg = DecodeReg(branch.reg);
|
|
inst = ((branch.bit & 0x20) << 26) | (0x1B << 25) | (Not << 24) | ((branch.bit & 0x1F) << 19) |
|
|
(MaskImm14(distance) << 5) | reg;
|
|
}
|
|
break;
|
|
case 5: // B (uncoditional)
|
|
_assert_msg_(DYNA_REC, IsInRangeImm26(distance),
|
|
"%s(%d): Received too large distance: %" PRIx64, __FUNCTION__, branch.type,
|
|
distance);
|
|
inst = (0x5 << 26) | MaskImm26(distance);
|
|
break;
|
|
case 6: // BL (unconditional)
|
|
_assert_msg_(DYNA_REC, IsInRangeImm26(distance),
|
|
"%s(%d): Received too large distance: %" PRIx64, __FUNCTION__, branch.type,
|
|
distance);
|
|
inst = (0x25 << 26) | MaskImm26(distance);
|
|
break;
|
|
}
|
|
*(u32*)branch.ptr = inst;
|
|
}
|
|
|
|
FixupBranch ARM64XEmitter::CBZ(ARM64Reg Rt)
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 0;
|
|
branch.reg = Rt;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
FixupBranch ARM64XEmitter::CBNZ(ARM64Reg Rt)
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 1;
|
|
branch.reg = Rt;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
FixupBranch ARM64XEmitter::B(CCFlags cond)
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 2;
|
|
branch.cond = cond;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
FixupBranch ARM64XEmitter::TBZ(ARM64Reg Rt, u8 bit)
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 3;
|
|
branch.reg = Rt;
|
|
branch.bit = bit;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
FixupBranch ARM64XEmitter::TBNZ(ARM64Reg Rt, u8 bit)
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 4;
|
|
branch.reg = Rt;
|
|
branch.bit = bit;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
FixupBranch ARM64XEmitter::B()
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 5;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
FixupBranch ARM64XEmitter::BL()
|
|
{
|
|
FixupBranch branch;
|
|
branch.ptr = m_code;
|
|
branch.type = 6;
|
|
HINT(HINT_NOP);
|
|
return branch;
|
|
}
|
|
|
|
// Compare and Branch
|
|
void ARM64XEmitter::CBZ(ARM64Reg Rt, const void* ptr)
|
|
{
|
|
EncodeCompareBranchInst(0, Rt, ptr);
|
|
}
|
|
void ARM64XEmitter::CBNZ(ARM64Reg Rt, const void* ptr)
|
|
{
|
|
EncodeCompareBranchInst(1, Rt, ptr);
|
|
}
|
|
|
|
// Conditional Branch
|
|
void ARM64XEmitter::B(CCFlags cond, const void* ptr)
|
|
{
|
|
s64 distance = (s64)ptr - (s64)m_code;
|
|
|
|
distance >>= 2;
|
|
|
|
_assert_msg_(DYNA_REC, IsInRangeImm19(distance),
|
|
"%s: Received too large distance: %p->%p %" PRIi64 " %" PRIx64, __FUNCTION__, m_code,
|
|
ptr, distance, distance);
|
|
Write32((0x54 << 24) | (MaskImm19(distance) << 5) | cond);
|
|
}
|
|
|
|
// Test and Branch
|
|
void ARM64XEmitter::TBZ(ARM64Reg Rt, u8 bits, const void* ptr)
|
|
{
|
|
EncodeTestBranchInst(0, Rt, bits, ptr);
|
|
}
|
|
void ARM64XEmitter::TBNZ(ARM64Reg Rt, u8 bits, const void* ptr)
|
|
{
|
|
EncodeTestBranchInst(1, Rt, bits, ptr);
|
|
}
|
|
|
|
// Unconditional Branch
|
|
void ARM64XEmitter::B(const void* ptr)
|
|
{
|
|
EncodeUnconditionalBranchInst(0, ptr);
|
|
}
|
|
void ARM64XEmitter::BL(const void* ptr)
|
|
{
|
|
EncodeUnconditionalBranchInst(1, ptr);
|
|
}
|
|
|
|
void ARM64XEmitter::QuickCallFunction(ARM64Reg scratchreg, const void* func)
|
|
{
|
|
s64 distance = (s64)func - (s64)m_code;
|
|
distance >>= 2; // Can only branch to opcode-aligned (4) addresses
|
|
if (!IsInRangeImm26(distance))
|
|
{
|
|
// WARN_LOG(DYNA_REC, "Distance too far in function call (%p to %p)! Using scratch.", m_code,
|
|
// func);
|
|
MOVI2R(scratchreg, (uintptr_t)func);
|
|
BLR(scratchreg);
|
|
}
|
|
else
|
|
{
|
|
BL(func);
|
|
}
|
|
}
|
|
|
|
// Unconditional Branch (register)
|
|
void ARM64XEmitter::BR(ARM64Reg Rn)
|
|
{
|
|
EncodeUnconditionalBranchInst(0, 0x1F, 0, 0, Rn);
|
|
}
|
|
void ARM64XEmitter::BLR(ARM64Reg Rn)
|
|
{
|
|
EncodeUnconditionalBranchInst(1, 0x1F, 0, 0, Rn);
|
|
}
|
|
void ARM64XEmitter::RET(ARM64Reg Rn)
|
|
{
|
|
EncodeUnconditionalBranchInst(2, 0x1F, 0, 0, Rn);
|
|
}
|
|
void ARM64XEmitter::ERET()
|
|
{
|
|
EncodeUnconditionalBranchInst(4, 0x1F, 0, 0, SP);
|
|
}
|
|
void ARM64XEmitter::DRPS()
|
|
{
|
|
EncodeUnconditionalBranchInst(5, 0x1F, 0, 0, SP);
|
|
}
|
|
|
|
// Exception generation
|
|
void ARM64XEmitter::SVC(u32 imm)
|
|
{
|
|
EncodeExceptionInst(0, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::HVC(u32 imm)
|
|
{
|
|
EncodeExceptionInst(1, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::SMC(u32 imm)
|
|
{
|
|
EncodeExceptionInst(2, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::BRK(u32 imm)
|
|
{
|
|
EncodeExceptionInst(3, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::HLT(u32 imm)
|
|
{
|
|
EncodeExceptionInst(4, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::DCPS1(u32 imm)
|
|
{
|
|
EncodeExceptionInst(5, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::DCPS2(u32 imm)
|
|
{
|
|
EncodeExceptionInst(6, imm);
|
|
}
|
|
|
|
void ARM64XEmitter::DCPS3(u32 imm)
|
|
{
|
|
EncodeExceptionInst(7, imm);
|
|
}
|
|
|
|
// System
|
|
void ARM64XEmitter::_MSR(PStateField field, u8 imm)
|
|
{
|
|
u32 op1 = 0, op2 = 0;
|
|
switch (field)
|
|
{
|
|
case FIELD_SPSel:
|
|
op1 = 0;
|
|
op2 = 5;
|
|
break;
|
|
case FIELD_DAIFSet:
|
|
op1 = 3;
|
|
op2 = 6;
|
|
break;
|
|
case FIELD_DAIFClr:
|
|
op1 = 3;
|
|
op2 = 7;
|
|
break;
|
|
default:
|
|
_assert_msg_(DYNA_REC, false, "Invalid PStateField to do a imm move to");
|
|
break;
|
|
}
|
|
EncodeSystemInst(0, op1, 4, imm, op2, WSP);
|
|
}
|
|
|
|
static void GetSystemReg(PStateField field, int& o0, int& op1, int& CRn, int& CRm, int& op2)
|
|
{
|
|
switch (field)
|
|
{
|
|
case FIELD_NZCV:
|
|
o0 = 3;
|
|
op1 = 3;
|
|
CRn = 4;
|
|
CRm = 2;
|
|
op2 = 0;
|
|
break;
|
|
case FIELD_FPCR:
|
|
o0 = 3;
|
|
op1 = 3;
|
|
CRn = 4;
|
|
CRm = 4;
|
|
op2 = 0;
|
|
break;
|
|
case FIELD_FPSR:
|
|
o0 = 3;
|
|
op1 = 3;
|
|
CRn = 4;
|
|
CRm = 4;
|
|
op2 = 1;
|
|
break;
|
|
case FIELD_PMCR_EL0:
|
|
o0 = 3;
|
|
op1 = 3;
|
|
CRn = 9;
|
|
CRm = 6;
|
|
op2 = 0;
|
|
break;
|
|
case FIELD_PMCCNTR_EL0:
|
|
o0 = 3;
|
|
op1 = 3;
|
|
CRn = 9;
|
|
CRm = 7;
|
|
op2 = 0;
|
|
break;
|
|
default:
|
|
_assert_msg_(DYNA_REC, false, "Invalid PStateField to do a register move from/to");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::_MSR(PStateField field, ARM64Reg Rt)
|
|
{
|
|
int o0 = 0, op1 = 0, CRn = 0, CRm = 0, op2 = 0;
|
|
_assert_msg_(DYNA_REC, Is64Bit(Rt), "MSR: Rt must be 64-bit");
|
|
GetSystemReg(field, o0, op1, CRn, CRm, op2);
|
|
EncodeSystemInst(o0, op1, CRn, CRm, op2, DecodeReg(Rt));
|
|
}
|
|
|
|
void ARM64XEmitter::MRS(ARM64Reg Rt, PStateField field)
|
|
{
|
|
int o0 = 0, op1 = 0, CRn = 0, CRm = 0, op2 = 0;
|
|
_assert_msg_(DYNA_REC, Is64Bit(Rt), "MRS: Rt must be 64-bit");
|
|
GetSystemReg(field, o0, op1, CRn, CRm, op2);
|
|
EncodeSystemInst(o0 | 4, op1, CRn, CRm, op2, DecodeReg(Rt));
|
|
}
|
|
|
|
void ARM64XEmitter::CNTVCT(Arm64Gen::ARM64Reg Rt)
|
|
{
|
|
_assert_msg_(DYNA_REC, Is64Bit(Rt), "CNTVCT: Rt must be 64-bit");
|
|
|
|
// MRS <Xt>, CNTVCT_EL0 ; Read CNTVCT_EL0 into Xt
|
|
EncodeSystemInst(3 | 4, 3, 0xe, 0, 2, DecodeReg(Rt));
|
|
}
|
|
|
|
void ARM64XEmitter::HINT(SystemHint op)
|
|
{
|
|
EncodeSystemInst(0, 3, 2, 0, op, WSP);
|
|
}
|
|
void ARM64XEmitter::CLREX()
|
|
{
|
|
EncodeSystemInst(0, 3, 3, 0, 2, WSP);
|
|
}
|
|
void ARM64XEmitter::DSB(BarrierType type)
|
|
{
|
|
EncodeSystemInst(0, 3, 3, type, 4, WSP);
|
|
}
|
|
void ARM64XEmitter::DMB(BarrierType type)
|
|
{
|
|
EncodeSystemInst(0, 3, 3, type, 5, WSP);
|
|
}
|
|
void ARM64XEmitter::ISB(BarrierType type)
|
|
{
|
|
EncodeSystemInst(0, 3, 3, type, 6, WSP);
|
|
}
|
|
|
|
// Add/Subtract (extended register)
|
|
void ARM64XEmitter::ADD(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
ADD(Rd, Rn, Rm, ArithOption(Rd, ST_LSL, 0));
|
|
}
|
|
|
|
void ARM64XEmitter::ADD(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
EncodeArithmeticInst(0, false, Rd, Rn, Rm, Option);
|
|
}
|
|
|
|
void ARM64XEmitter::ADDS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeArithmeticInst(0, true, Rd, Rn, Rm, ArithOption(Rd, ST_LSL, 0));
|
|
}
|
|
|
|
void ARM64XEmitter::ADDS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
EncodeArithmeticInst(0, true, Rd, Rn, Rm, Option);
|
|
}
|
|
|
|
void ARM64XEmitter::SUB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
SUB(Rd, Rn, Rm, ArithOption(Rd, ST_LSL, 0));
|
|
}
|
|
|
|
void ARM64XEmitter::SUB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
EncodeArithmeticInst(1, false, Rd, Rn, Rm, Option);
|
|
}
|
|
|
|
void ARM64XEmitter::SUBS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeArithmeticInst(1, true, Rd, Rn, Rm, ArithOption(Rd, ST_LSL, 0));
|
|
}
|
|
|
|
void ARM64XEmitter::SUBS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
EncodeArithmeticInst(1, true, Rd, Rn, Rm, Option);
|
|
}
|
|
|
|
void ARM64XEmitter::CMN(ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
CMN(Rn, Rm, ArithOption(Rn, ST_LSL, 0));
|
|
}
|
|
|
|
void ARM64XEmitter::CMN(ARM64Reg Rn, ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
EncodeArithmeticInst(0, true, Is64Bit(Rn) ? ZR : WZR, Rn, Rm, Option);
|
|
}
|
|
|
|
void ARM64XEmitter::CMP(ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
CMP(Rn, Rm, ArithOption(Rn, ST_LSL, 0));
|
|
}
|
|
|
|
void ARM64XEmitter::CMP(ARM64Reg Rn, ARM64Reg Rm, ArithOption Option)
|
|
{
|
|
EncodeArithmeticInst(1, true, Is64Bit(Rn) ? ZR : WZR, Rn, Rm, Option);
|
|
}
|
|
|
|
// Add/Subtract (with carry)
|
|
void ARM64XEmitter::ADC(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeArithmeticCarryInst(0, false, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::ADCS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeArithmeticCarryInst(0, true, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::SBC(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeArithmeticCarryInst(1, false, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::SBCS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeArithmeticCarryInst(1, true, Rd, Rn, Rm);
|
|
}
|
|
|
|
// Conditional Compare (immediate)
|
|
void ARM64XEmitter::CCMN(ARM64Reg Rn, u32 imm, u32 nzcv, CCFlags cond)
|
|
{
|
|
EncodeCondCompareImmInst(0, Rn, imm, nzcv, cond);
|
|
}
|
|
void ARM64XEmitter::CCMP(ARM64Reg Rn, u32 imm, u32 nzcv, CCFlags cond)
|
|
{
|
|
EncodeCondCompareImmInst(1, Rn, imm, nzcv, cond);
|
|
}
|
|
|
|
// Conditiona Compare (register)
|
|
void ARM64XEmitter::CCMN(ARM64Reg Rn, ARM64Reg Rm, u32 nzcv, CCFlags cond)
|
|
{
|
|
EncodeCondCompareRegInst(0, Rn, Rm, nzcv, cond);
|
|
}
|
|
void ARM64XEmitter::CCMP(ARM64Reg Rn, ARM64Reg Rm, u32 nzcv, CCFlags cond)
|
|
{
|
|
EncodeCondCompareRegInst(1, Rn, Rm, nzcv, cond);
|
|
}
|
|
|
|
// Conditional Select
|
|
void ARM64XEmitter::CSEL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, CCFlags cond)
|
|
{
|
|
EncodeCondSelectInst(0, Rd, Rn, Rm, cond);
|
|
}
|
|
void ARM64XEmitter::CSINC(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, CCFlags cond)
|
|
{
|
|
EncodeCondSelectInst(1, Rd, Rn, Rm, cond);
|
|
}
|
|
void ARM64XEmitter::CSINV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, CCFlags cond)
|
|
{
|
|
EncodeCondSelectInst(2, Rd, Rn, Rm, cond);
|
|
}
|
|
void ARM64XEmitter::CSNEG(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, CCFlags cond)
|
|
{
|
|
EncodeCondSelectInst(3, Rd, Rn, Rm, cond);
|
|
}
|
|
|
|
// Data-Processing 1 source
|
|
void ARM64XEmitter::RBIT(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EncodeData1SrcInst(0, Rd, Rn);
|
|
}
|
|
void ARM64XEmitter::REV16(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EncodeData1SrcInst(1, Rd, Rn);
|
|
}
|
|
void ARM64XEmitter::REV32(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EncodeData1SrcInst(2, Rd, Rn);
|
|
}
|
|
void ARM64XEmitter::REV64(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EncodeData1SrcInst(3, Rd, Rn);
|
|
}
|
|
void ARM64XEmitter::CLZ(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EncodeData1SrcInst(4, Rd, Rn);
|
|
}
|
|
void ARM64XEmitter::CLS(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EncodeData1SrcInst(5, Rd, Rn);
|
|
}
|
|
|
|
// Data-Processing 2 source
|
|
void ARM64XEmitter::UDIV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(0, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::SDIV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(1, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LSLV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(2, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LSRV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(3, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::ASRV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(4, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::RORV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(5, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32B(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(6, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32H(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(7, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32W(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(8, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32CB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(9, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32CH(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(10, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32CW(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(11, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32X(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(12, Rd, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::CRC32CX(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData2SrcInst(13, Rd, Rn, Rm);
|
|
}
|
|
|
|
// Data-Processing 3 source
|
|
void ARM64XEmitter::MADD(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EncodeData3SrcInst(0, Rd, Rn, Rm, Ra);
|
|
}
|
|
void ARM64XEmitter::MSUB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EncodeData3SrcInst(1, Rd, Rn, Rm, Ra);
|
|
}
|
|
void ARM64XEmitter::SMADDL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EncodeData3SrcInst(2, Rd, Rn, Rm, Ra);
|
|
}
|
|
void ARM64XEmitter::SMULL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
SMADDL(Rd, Rn, Rm, SP);
|
|
}
|
|
void ARM64XEmitter::SMSUBL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EncodeData3SrcInst(3, Rd, Rn, Rm, Ra);
|
|
}
|
|
void ARM64XEmitter::SMULH(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData3SrcInst(4, Rd, Rn, Rm, SP);
|
|
}
|
|
void ARM64XEmitter::UMADDL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EncodeData3SrcInst(5, Rd, Rn, Rm, Ra);
|
|
}
|
|
void ARM64XEmitter::UMULL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
UMADDL(Rd, Rn, Rm, SP);
|
|
}
|
|
void ARM64XEmitter::UMSUBL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EncodeData3SrcInst(6, Rd, Rn, Rm, Ra);
|
|
}
|
|
void ARM64XEmitter::UMULH(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData3SrcInst(7, Rd, Rn, Rm, SP);
|
|
}
|
|
void ARM64XEmitter::MUL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData3SrcInst(0, Rd, Rn, Rm, SP);
|
|
}
|
|
void ARM64XEmitter::MNEG(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EncodeData3SrcInst(1, Rd, Rn, Rm, SP);
|
|
}
|
|
|
|
// Logical (shifted register)
|
|
void ARM64XEmitter::AND(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(0, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::BIC(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(1, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::ORR(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(2, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::ORN(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(3, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::EOR(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(4, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::EON(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(5, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::ANDS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(6, Rd, Rn, Rm, Shift);
|
|
}
|
|
void ARM64XEmitter::BICS(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
EncodeLogicalInst(7, Rd, Rn, Rm, Shift);
|
|
}
|
|
|
|
void ARM64XEmitter::MOV(ARM64Reg Rd, ARM64Reg Rm, ArithOption Shift)
|
|
{
|
|
ORR(Rd, Is64Bit(Rd) ? ZR : WZR, Rm, Shift);
|
|
}
|
|
|
|
void ARM64XEmitter::MOV(ARM64Reg Rd, ARM64Reg Rm)
|
|
{
|
|
if (IsGPR(Rd) && IsGPR(Rm))
|
|
ORR(Rd, Is64Bit(Rd) ? ZR : WZR, Rm, ArithOption(Rm, ST_LSL, 0));
|
|
else
|
|
_assert_msg_(DYNA_REC, false, "Non-GPRs not supported in MOV");
|
|
}
|
|
void ARM64XEmitter::MVN(ARM64Reg Rd, ARM64Reg Rm)
|
|
{
|
|
ORN(Rd, Is64Bit(Rd) ? ZR : WZR, Rm, ArithOption(Rm, ST_LSL, 0));
|
|
}
|
|
void ARM64XEmitter::LSL(ARM64Reg Rd, ARM64Reg Rm, int shift)
|
|
{
|
|
int bits = Is64Bit(Rd) ? 64 : 32;
|
|
UBFM(Rd, Rm, (bits - shift) & (bits - 1), bits - shift - 1);
|
|
}
|
|
void ARM64XEmitter::LSR(ARM64Reg Rd, ARM64Reg Rm, int shift)
|
|
{
|
|
int bits = Is64Bit(Rd) ? 64 : 32;
|
|
UBFM(Rd, Rm, shift, bits - 1);
|
|
}
|
|
void ARM64XEmitter::ASR(ARM64Reg Rd, ARM64Reg Rm, int shift)
|
|
{
|
|
int bits = Is64Bit(Rd) ? 64 : 32;
|
|
SBFM(Rd, Rm, shift, bits - 1);
|
|
}
|
|
void ARM64XEmitter::ROR(ARM64Reg Rd, ARM64Reg Rm, int shift)
|
|
{
|
|
EXTR(Rd, Rm, Rm, shift);
|
|
}
|
|
|
|
// Logical (immediate)
|
|
void ARM64XEmitter::AND(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms, bool invert)
|
|
{
|
|
EncodeLogicalImmInst(0, Rd, Rn, immr, imms, invert);
|
|
}
|
|
void ARM64XEmitter::ANDS(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms, bool invert)
|
|
{
|
|
EncodeLogicalImmInst(3, Rd, Rn, immr, imms, invert);
|
|
}
|
|
void ARM64XEmitter::EOR(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms, bool invert)
|
|
{
|
|
EncodeLogicalImmInst(2, Rd, Rn, immr, imms, invert);
|
|
}
|
|
void ARM64XEmitter::ORR(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms, bool invert)
|
|
{
|
|
EncodeLogicalImmInst(1, Rd, Rn, immr, imms, invert);
|
|
}
|
|
void ARM64XEmitter::TST(ARM64Reg Rn, u32 immr, u32 imms, bool invert)
|
|
{
|
|
EncodeLogicalImmInst(3, Is64Bit(Rn) ? ZR : WZR, Rn, immr, imms, invert);
|
|
}
|
|
|
|
// Add/subtract (immediate)
|
|
void ARM64XEmitter::ADD(ARM64Reg Rd, ARM64Reg Rn, u32 imm, bool shift)
|
|
{
|
|
EncodeAddSubImmInst(0, false, shift, imm, Rn, Rd);
|
|
}
|
|
void ARM64XEmitter::ADDS(ARM64Reg Rd, ARM64Reg Rn, u32 imm, bool shift)
|
|
{
|
|
EncodeAddSubImmInst(0, true, shift, imm, Rn, Rd);
|
|
}
|
|
void ARM64XEmitter::SUB(ARM64Reg Rd, ARM64Reg Rn, u32 imm, bool shift)
|
|
{
|
|
EncodeAddSubImmInst(1, false, shift, imm, Rn, Rd);
|
|
}
|
|
void ARM64XEmitter::SUBS(ARM64Reg Rd, ARM64Reg Rn, u32 imm, bool shift)
|
|
{
|
|
EncodeAddSubImmInst(1, true, shift, imm, Rn, Rd);
|
|
}
|
|
void ARM64XEmitter::CMP(ARM64Reg Rn, u32 imm, bool shift)
|
|
{
|
|
EncodeAddSubImmInst(1, true, shift, imm, Rn, Is64Bit(Rn) ? SP : WSP);
|
|
}
|
|
|
|
// Data Processing (Immediate)
|
|
void ARM64XEmitter::MOVZ(ARM64Reg Rd, u32 imm, ShiftAmount pos)
|
|
{
|
|
EncodeMOVWideInst(2, Rd, imm, pos);
|
|
}
|
|
void ARM64XEmitter::MOVN(ARM64Reg Rd, u32 imm, ShiftAmount pos)
|
|
{
|
|
EncodeMOVWideInst(0, Rd, imm, pos);
|
|
}
|
|
void ARM64XEmitter::MOVK(ARM64Reg Rd, u32 imm, ShiftAmount pos)
|
|
{
|
|
EncodeMOVWideInst(3, Rd, imm, pos);
|
|
}
|
|
|
|
// Bitfield move
|
|
void ARM64XEmitter::BFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms)
|
|
{
|
|
EncodeBitfieldMOVInst(1, Rd, Rn, immr, imms);
|
|
}
|
|
void ARM64XEmitter::SBFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms)
|
|
{
|
|
EncodeBitfieldMOVInst(0, Rd, Rn, immr, imms);
|
|
}
|
|
void ARM64XEmitter::UBFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms)
|
|
{
|
|
EncodeBitfieldMOVInst(2, Rd, Rn, immr, imms);
|
|
}
|
|
|
|
void ARM64XEmitter::BFI(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
|
|
{
|
|
u32 size = Is64Bit(Rn) ? 64 : 32;
|
|
_assert_msg_(DYNA_REC, (lsb + width) <= size,
|
|
"%s passed lsb %d and width %d which is greater than the register size!",
|
|
__FUNCTION__, lsb, width);
|
|
EncodeBitfieldMOVInst(1, Rd, Rn, (size - lsb) % size, width - 1);
|
|
}
|
|
void ARM64XEmitter::UBFIZ(ARM64Reg Rd, ARM64Reg Rn, u32 lsb, u32 width)
|
|
{
|
|
u32 size = Is64Bit(Rn) ? 64 : 32;
|
|
_assert_msg_(DYNA_REC, (lsb + width) <= size,
|
|
"%s passed lsb %d and width %d which is greater than the register size!",
|
|
__FUNCTION__, lsb, width);
|
|
EncodeBitfieldMOVInst(2, Rd, Rn, (size - lsb) % size, width - 1);
|
|
}
|
|
void ARM64XEmitter::EXTR(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, u32 shift)
|
|
{
|
|
bool sf = Is64Bit(Rd);
|
|
bool N = sf;
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
Write32((sf << 31) | (0x27 << 23) | (N << 22) | (Rm << 16) | (shift << 10) | (Rm << 5) | Rd);
|
|
}
|
|
void ARM64XEmitter::SXTB(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
SBFM(Rd, Rn, 0, 7);
|
|
}
|
|
void ARM64XEmitter::SXTH(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
SBFM(Rd, Rn, 0, 15);
|
|
}
|
|
void ARM64XEmitter::SXTW(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, Is64Bit(Rd), "%s requires 64bit register as destination", __FUNCTION__);
|
|
SBFM(Rd, Rn, 0, 31);
|
|
}
|
|
void ARM64XEmitter::UXTB(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
UBFM(Rd, Rn, 0, 7);
|
|
}
|
|
void ARM64XEmitter::UXTH(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
UBFM(Rd, Rn, 0, 15);
|
|
}
|
|
|
|
// Load Register (Literal)
|
|
void ARM64XEmitter::LDR(ARM64Reg Rt, u32 imm)
|
|
{
|
|
EncodeLoadRegisterInst(0, Rt, imm);
|
|
}
|
|
void ARM64XEmitter::LDRSW(ARM64Reg Rt, u32 imm)
|
|
{
|
|
EncodeLoadRegisterInst(2, Rt, imm);
|
|
}
|
|
void ARM64XEmitter::PRFM(ARM64Reg Rt, u32 imm)
|
|
{
|
|
EncodeLoadRegisterInst(3, Rt, imm);
|
|
}
|
|
|
|
// Load/Store pair
|
|
void ARM64XEmitter::LDP(IndexType type, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStorePair(0, 1, type, Rt, Rt2, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDPSW(IndexType type, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStorePair(1, 1, type, Rt, Rt2, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::STP(IndexType type, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStorePair(0, 0, type, Rt, Rt2, Rn, imm);
|
|
}
|
|
|
|
// Load/Store Exclusive
|
|
void ARM64XEmitter::STXRB(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(0, Rs, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLXRB(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(1, Rs, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDXRB(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(2, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDAXRB(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(3, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLRB(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(4, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDARB(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(5, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STXRH(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(6, Rs, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLXRH(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(7, Rs, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDXRH(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(8, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDAXRH(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(9, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLRH(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(10, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDARH(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(11, SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STXR(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(12 + Is64Bit(Rt), Rs, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLXR(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(14 + Is64Bit(Rt), Rs, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STXP(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(16 + Is64Bit(Rt), Rs, Rt2, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLXP(ARM64Reg Rs, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(18 + Is64Bit(Rt), Rs, Rt2, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDXR(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(20 + Is64Bit(Rt), SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDAXR(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(22 + Is64Bit(Rt), SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDXP(ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(24 + Is64Bit(Rt), SP, Rt2, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDAXP(ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(26 + Is64Bit(Rt), SP, Rt2, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::STLR(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(28 + Is64Bit(Rt), SP, SP, Rt, Rn);
|
|
}
|
|
void ARM64XEmitter::LDAR(ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EncodeLoadStoreExcInst(30 + Is64Bit(Rt), SP, SP, Rt, Rn);
|
|
}
|
|
|
|
// Load/Store no-allocate pair (offset)
|
|
void ARM64XEmitter::STNP(ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn, u32 imm)
|
|
{
|
|
EncodeLoadStorePairedInst(0xA0, Rt, Rt2, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDNP(ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn, u32 imm)
|
|
{
|
|
EncodeLoadStorePairedInst(0xA1, Rt, Rt2, Rn, imm);
|
|
}
|
|
|
|
// Load/Store register (immediate post-indexed)
|
|
// XXX: Most of these support vectors
|
|
void ARM64XEmitter::STRB(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(0x0E4, Rt, Rn, imm, 8);
|
|
else
|
|
EncodeLoadStoreIndexedInst(0x0E0, type == INDEX_POST ? 1 : 3, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDRB(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(0x0E5, Rt, Rn, imm, 8);
|
|
else
|
|
EncodeLoadStoreIndexedInst(0x0E1, type == INDEX_POST ? 1 : 3, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDRSB(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x0E6 : 0x0E7, Rt, Rn, imm, 8);
|
|
else
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x0E2 : 0x0E3, type == INDEX_POST ? 1 : 3, Rt, Rn,
|
|
imm);
|
|
}
|
|
void ARM64XEmitter::STRH(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(0x1E4, Rt, Rn, imm, 16);
|
|
else
|
|
EncodeLoadStoreIndexedInst(0x1E0, type == INDEX_POST ? 1 : 3, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDRH(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(0x1E5, Rt, Rn, imm, 16);
|
|
else
|
|
EncodeLoadStoreIndexedInst(0x1E1, type == INDEX_POST ? 1 : 3, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDRSH(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x1E6 : 0x1E7, Rt, Rn, imm, 16);
|
|
else
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x1E2 : 0x1E3, type == INDEX_POST ? 1 : 3, Rt, Rn,
|
|
imm);
|
|
}
|
|
void ARM64XEmitter::STR(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x3E4 : 0x2E4, Rt, Rn, imm, Is64Bit(Rt) ? 64 : 32);
|
|
else
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x3E0 : 0x2E0, type == INDEX_POST ? 1 : 3, Rt, Rn,
|
|
imm);
|
|
}
|
|
void ARM64XEmitter::LDR(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x3E5 : 0x2E5, Rt, Rn, imm, Is64Bit(Rt) ? 64 : 32);
|
|
else
|
|
EncodeLoadStoreIndexedInst(Is64Bit(Rt) ? 0x3E1 : 0x2E1, type == INDEX_POST ? 1 : 3, Rt, Rn,
|
|
imm);
|
|
}
|
|
void ARM64XEmitter::LDRSW(IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
if (type == INDEX_UNSIGNED)
|
|
EncodeLoadStoreIndexedInst(0x2E6, Rt, Rn, imm, 32);
|
|
else
|
|
EncodeLoadStoreIndexedInst(0x2E2, type == INDEX_POST ? 1 : 3, Rt, Rn, imm);
|
|
}
|
|
|
|
// Load/Store register (register offset)
|
|
void ARM64XEmitter::STRB(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(0, 0, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LDRB(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(0, 1, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LDRSB(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
EncodeLoadStoreRegisterOffset(0, 3 - b64Bit, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::STRH(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(1, 0, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LDRH(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(1, 1, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LDRSH(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
EncodeLoadStoreRegisterOffset(1, 3 - b64Bit, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::STR(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
EncodeLoadStoreRegisterOffset(2 + b64Bit, 0, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LDR(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
bool b64Bit = Is64Bit(Rt);
|
|
EncodeLoadStoreRegisterOffset(2 + b64Bit, 1, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::LDRSW(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(2, 2, Rt, Rn, Rm);
|
|
}
|
|
void ARM64XEmitter::PRFM(ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(3, 2, Rt, Rn, Rm);
|
|
}
|
|
|
|
// Load/Store register (unscaled offset)
|
|
void ARM64XEmitter::STURB(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(0, 0, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDURB(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(0, 1, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDURSB(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(0, Is64Bit(Rt) ? 2 : 3, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::STURH(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(1, 0, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDURH(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(1, 1, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDURSH(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(1, Is64Bit(Rt) ? 2 : 3, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::STUR(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(Is64Bit(Rt) ? 3 : 2, 0, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDUR(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EncodeLoadStoreUnscaled(Is64Bit(Rt) ? 3 : 2, 1, Rt, Rn, imm);
|
|
}
|
|
void ARM64XEmitter::LDURSW(ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !Is64Bit(Rt), "%s must have a 64bit destination register!", __FUNCTION__);
|
|
EncodeLoadStoreUnscaled(2, 2, Rt, Rn, imm);
|
|
}
|
|
|
|
// Address of label/page PC-relative
|
|
void ARM64XEmitter::ADR(ARM64Reg Rd, s32 imm)
|
|
{
|
|
EncodeAddressInst(0, Rd, imm);
|
|
}
|
|
void ARM64XEmitter::ADRP(ARM64Reg Rd, s32 imm)
|
|
{
|
|
EncodeAddressInst(1, Rd, imm >> 12);
|
|
}
|
|
|
|
// Wrapper around MOVZ+MOVK (and later MOVN)
|
|
void ARM64XEmitter::MOVI2R(ARM64Reg Rd, u64 imm, bool optimize)
|
|
{
|
|
unsigned int parts = Is64Bit(Rd) ? 4 : 2;
|
|
BitSet32 upload_part(0);
|
|
|
|
// Always start with a movz! Kills the dependency on the register.
|
|
bool use_movz = true;
|
|
|
|
if (!imm)
|
|
{
|
|
// Zero immediate, just clear the register. EOR is pointless when we have MOVZ, which looks
|
|
// clearer in disasm too.
|
|
MOVZ(Rd, 0, SHIFT_0);
|
|
return;
|
|
}
|
|
|
|
if ((Is64Bit(Rd) && imm == std::numeric_limits<u64>::max()) ||
|
|
(!Is64Bit(Rd) && imm == std::numeric_limits<u32>::max()))
|
|
{
|
|
// Max unsigned value (or if signed, -1)
|
|
// Set to ~ZR
|
|
ARM64Reg ZR = Is64Bit(Rd) ? SP : WSP;
|
|
ORN(Rd, ZR, ZR, ArithOption(ZR, ST_LSL, 0));
|
|
return;
|
|
}
|
|
|
|
// TODO: Make some more systemic use of MOVN, but this will take care of most cases.
|
|
// Small negative integer. Use MOVN
|
|
if (!Is64Bit(Rd) && (imm | 0xFFFF0000) == imm)
|
|
{
|
|
MOVN(Rd, ~imm, SHIFT_0);
|
|
return;
|
|
}
|
|
|
|
// XXX: Use MOVN when possible.
|
|
// XXX: Optimize more
|
|
// XXX: Support rotating immediates to save instructions
|
|
if (optimize)
|
|
{
|
|
for (unsigned int i = 0; i < parts; ++i)
|
|
{
|
|
if ((imm >> (i * 16)) & 0xFFFF)
|
|
upload_part[i] = 1;
|
|
}
|
|
}
|
|
|
|
u64 aligned_pc = (u64)GetCodePtr() & ~0xFFF;
|
|
s64 aligned_offset = (s64)imm - (s64)aligned_pc;
|
|
if (upload_part.Count() > 1 && std::abs(aligned_offset) < 0xFFFFFFFFLL)
|
|
{
|
|
// Immediate we are loading is within 4GB of our aligned range
|
|
// Most likely a address that we can load in one or two instructions
|
|
if (!(std::abs(aligned_offset) & 0xFFF))
|
|
{
|
|
// Aligned ADR
|
|
ADRP(Rd, (s32)aligned_offset);
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
// If the address is within 1MB of PC we can load it in a single instruction still
|
|
s64 offset = (s64)imm - (s64)GetCodePtr();
|
|
if (offset >= -0xFFFFF && offset <= 0xFFFFF)
|
|
{
|
|
ADR(Rd, (s32)offset);
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
ADRP(Rd, (s32)(aligned_offset & ~0xFFF));
|
|
ADD(Rd, Rd, imm & 0xFFF);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (unsigned i = 0; i < parts; ++i)
|
|
{
|
|
if (use_movz && upload_part[i])
|
|
{
|
|
MOVZ(Rd, (imm >> (i * 16)) & 0xFFFF, (ShiftAmount)i);
|
|
use_movz = false;
|
|
}
|
|
else
|
|
{
|
|
if (upload_part[i] || !optimize)
|
|
MOVK(Rd, (imm >> (i * 16)) & 0xFFFF, (ShiftAmount)i);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ARM64XEmitter::MOVI2R2(ARM64Reg Rd, u64 imm1, u64 imm2)
|
|
{
|
|
// TODO: Also optimize for performance, not just for code size.
|
|
u8* start_pointer = GetWritableCodePtr();
|
|
|
|
MOVI2R(Rd, imm1);
|
|
int size1 = GetCodePtr() - start_pointer;
|
|
|
|
SetCodePtrUnsafe(start_pointer);
|
|
|
|
MOVI2R(Rd, imm2);
|
|
int size2 = GetCodePtr() - start_pointer;
|
|
|
|
SetCodePtrUnsafe(start_pointer);
|
|
|
|
bool element = size1 > size2;
|
|
|
|
MOVI2R(Rd, element ? imm2 : imm1);
|
|
|
|
return element;
|
|
}
|
|
|
|
void ARM64XEmitter::ABI_PushRegisters(BitSet32 registers)
|
|
{
|
|
int num_regs = registers.Count();
|
|
int stack_size = (num_regs + (num_regs & 1)) * 8;
|
|
auto it = registers.begin();
|
|
|
|
if (!num_regs)
|
|
return;
|
|
|
|
// 8 byte per register, but 16 byte alignment, so we may have to padd one register.
|
|
// Only update the SP on the last write to avoid the dependency between those stores.
|
|
|
|
// The first push must adjust the SP, else a context switch may invalidate everything below SP.
|
|
if (num_regs & 1)
|
|
STR(INDEX_PRE, (ARM64Reg)(X0 + *it++), SP, -stack_size);
|
|
else
|
|
STP(INDEX_PRE, (ARM64Reg)(X0 + *it++), (ARM64Reg)(X0 + *it++), SP, -stack_size);
|
|
|
|
// Fast store for all other registers, this is always an even number.
|
|
for (int i = 0; i < (num_regs - 1) / 2; i++)
|
|
STP(INDEX_SIGNED, (ARM64Reg)(X0 + *it++), (ARM64Reg)(X0 + *it++), SP, 16 * (i + 1));
|
|
|
|
_assert_msg_(DYNA_REC, it == registers.end(), "%s registers don't match.", __FUNCTION__);
|
|
}
|
|
|
|
void ARM64XEmitter::ABI_PopRegisters(BitSet32 registers, BitSet32 ignore_mask)
|
|
{
|
|
int num_regs = registers.Count();
|
|
int stack_size = (num_regs + (num_regs & 1)) * 8;
|
|
auto it = registers.begin();
|
|
|
|
if (!num_regs)
|
|
return;
|
|
|
|
// We must adjust the SP in the end, so load the first (two) registers at least.
|
|
ARM64Reg first = (ARM64Reg)(X0 + *it++);
|
|
ARM64Reg second;
|
|
if (!(num_regs & 1))
|
|
second = (ARM64Reg)(X0 + *it++);
|
|
|
|
// 8 byte per register, but 16 byte alignment, so we may have to padd one register.
|
|
// Only update the SP on the last load to avoid the dependency between those loads.
|
|
|
|
// Fast load for all but the first (two) registers, this is always an even number.
|
|
for (int i = 0; i < (num_regs - 1) / 2; i++)
|
|
LDP(INDEX_SIGNED, (ARM64Reg)(X0 + *it++), (ARM64Reg)(X0 + *it++), SP, 16 * (i + 1));
|
|
|
|
// Post loading the first (two) registers.
|
|
if (num_regs & 1)
|
|
LDR(INDEX_POST, first, SP, stack_size);
|
|
else
|
|
LDP(INDEX_POST, first, second, SP, stack_size);
|
|
|
|
_assert_msg_(DYNA_REC, it == registers.end(), "%s registers don't match.", __FUNCTION__);
|
|
}
|
|
|
|
// Float Emitter
|
|
void ARM64FloatEmitter::EmitLoadStoreImmediate(u8 size, u32 opc, IndexType type, ARM64Reg Rt,
|
|
ARM64Reg Rn, s32 imm)
|
|
{
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
u32 encoded_size = 0;
|
|
u32 encoded_imm = 0;
|
|
|
|
if (size == 8)
|
|
encoded_size = 0;
|
|
else if (size == 16)
|
|
encoded_size = 1;
|
|
else if (size == 32)
|
|
encoded_size = 2;
|
|
else if (size == 64)
|
|
encoded_size = 3;
|
|
else if (size == 128)
|
|
encoded_size = 0;
|
|
|
|
if (type == INDEX_UNSIGNED)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm & ((size - 1) >> 3)),
|
|
"%s(INDEX_UNSIGNED) immediate offset must be aligned to size! (%d) (%p)",
|
|
__FUNCTION__, imm, m_emit->GetCodePtr());
|
|
_assert_msg_(DYNA_REC, imm >= 0, "%s(INDEX_UNSIGNED) immediate offset must be positive!",
|
|
__FUNCTION__);
|
|
if (size == 16)
|
|
imm >>= 1;
|
|
else if (size == 32)
|
|
imm >>= 2;
|
|
else if (size == 64)
|
|
imm >>= 3;
|
|
else if (size == 128)
|
|
imm >>= 4;
|
|
encoded_imm = (imm & 0xFFF);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm < -256 || imm > 255),
|
|
"%s immediate offset must be within range of -256 to 256!", __FUNCTION__);
|
|
encoded_imm = (imm & 0x1FF) << 2;
|
|
if (type == INDEX_POST)
|
|
encoded_imm |= 1;
|
|
else
|
|
encoded_imm |= 3;
|
|
}
|
|
|
|
Write32((encoded_size << 30) | (0xF << 26) | (type == INDEX_UNSIGNED ? (1 << 24) : 0) |
|
|
(size == 128 ? (1 << 23) : 0) | (opc << 22) | (encoded_imm << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitScalar2Source(bool M, bool S, u32 type, u32 opcode, ARM64Reg Rd,
|
|
ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rd), "%s only supports double and single registers!",
|
|
__FUNCTION__);
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((M << 31) | (S << 29) | (0b11110001 << 21) | (type << 22) | (Rm << 16) | (opcode << 12) |
|
|
(1 << 11) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitThreeSame(bool U, u32 size, u32 opcode, ARM64Reg Rd, ARM64Reg Rn,
|
|
ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsSingle(Rd), "%s doesn't support singles!", __FUNCTION__);
|
|
bool quad = IsQuad(Rd);
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((quad << 30) | (U << 29) | (0b1110001 << 21) | (size << 22) | (Rm << 16) |
|
|
(opcode << 11) | (1 << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitCopy(bool Q, u32 op, u32 imm5, u32 imm4, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((Q << 30) | (op << 29) | (0b111 << 25) | (imm5 << 16) | (imm4 << 11) | (1 << 10) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::Emit2RegMisc(bool Q, bool U, u32 size, u32 opcode, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsSingle(Rd), "%s doesn't support singles!", __FUNCTION__);
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((Q << 30) | (U << 29) | (0b1110001 << 21) | (size << 22) | (opcode << 12) | (1 << 11) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitLoadStoreSingleStructure(bool L, bool R, u32 opcode, bool S, u32 size,
|
|
ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsSingle(Rt), "%s doesn't support singles!", __FUNCTION__);
|
|
bool quad = IsQuad(Rt);
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((quad << 30) | (0b1101 << 24) | (L << 22) | (R << 21) | (opcode << 13) | (S << 12) |
|
|
(size << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitLoadStoreSingleStructure(bool L, bool R, u32 opcode, bool S, u32 size,
|
|
ARM64Reg Rt, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsSingle(Rt), "%s doesn't support singles!", __FUNCTION__);
|
|
bool quad = IsQuad(Rt);
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((quad << 30) | (0x1B << 23) | (L << 22) | (R << 21) | (Rm << 16) | (opcode << 13) |
|
|
(S << 12) | (size << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::Emit1Source(bool M, bool S, u32 type, u32 opcode, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rd), "%s doesn't support vector!", __FUNCTION__);
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((M << 31) | (S << 29) | (0xF1 << 21) | (type << 22) | (opcode << 15) | (1 << 14) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitConversion(bool sf, bool S, u32 type, u32 rmode, u32 opcode,
|
|
ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, Rn <= SP, "%s only supports GPR as source!", __FUNCTION__);
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((sf << 31) | (S << 29) | (0xF1 << 21) | (type << 22) | (rmode << 19) | (opcode << 16) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitConvertScalarToInt(ARM64Reg Rd, ARM64Reg Rn, RoundingMode round,
|
|
bool sign)
|
|
{
|
|
_dbg_assert_msg_(DYNA_REC, IsScalar(Rn), "fcvts: Rn must be floating point");
|
|
if (IsGPR(Rd))
|
|
{
|
|
// Use the encoding that transfers the result to a GPR.
|
|
bool sf = Is64Bit(Rd);
|
|
int type = IsDouble(Rn) ? 1 : 0;
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
int opcode = (sign ? 1 : 0);
|
|
int rmode = 0;
|
|
switch (round)
|
|
{
|
|
case ROUND_A:
|
|
rmode = 0;
|
|
opcode |= 4;
|
|
break;
|
|
case ROUND_P:
|
|
rmode = 1;
|
|
break;
|
|
case ROUND_M:
|
|
rmode = 2;
|
|
break;
|
|
case ROUND_Z:
|
|
rmode = 3;
|
|
break;
|
|
case ROUND_N:
|
|
rmode = 0;
|
|
break;
|
|
}
|
|
EmitConversion2(sf, 0, true, type, rmode, opcode, 0, Rd, Rn);
|
|
}
|
|
else
|
|
{
|
|
// Use the encoding (vector, single) that keeps the result in the fp register.
|
|
int sz = IsDouble(Rn);
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
int opcode = 0;
|
|
switch (round)
|
|
{
|
|
case ROUND_A:
|
|
opcode = 0x1C;
|
|
break;
|
|
case ROUND_N:
|
|
opcode = 0x1A;
|
|
break;
|
|
case ROUND_M:
|
|
opcode = 0x1B;
|
|
break;
|
|
case ROUND_P:
|
|
opcode = 0x1A;
|
|
sz |= 2;
|
|
break;
|
|
case ROUND_Z:
|
|
opcode = 0x1B;
|
|
sz |= 2;
|
|
break;
|
|
}
|
|
Write32((0x5E << 24) | (sign << 29) | (sz << 22) | (1 << 21) | (opcode << 12) | (2 << 10) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
}
|
|
|
|
void ARM64FloatEmitter::FCVTS(ARM64Reg Rd, ARM64Reg Rn, RoundingMode round)
|
|
{
|
|
EmitConvertScalarToInt(Rd, Rn, round, false);
|
|
}
|
|
|
|
void ARM64FloatEmitter::FCVTU(ARM64Reg Rd, ARM64Reg Rn, RoundingMode round)
|
|
{
|
|
EmitConvertScalarToInt(Rd, Rn, round, true);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitConversion2(bool sf, bool S, bool direction, u32 type, u32 rmode,
|
|
u32 opcode, int scale, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((sf << 31) | (S << 29) | (0xF0 << 21) | (direction << 21) | (type << 22) | (rmode << 19) |
|
|
(opcode << 16) | (scale << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitCompare(bool M, bool S, u32 op, u32 opcode2, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rn), "%s doesn't support vector!", __FUNCTION__);
|
|
bool is_double = IsDouble(Rn);
|
|
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((M << 31) | (S << 29) | (0xF1 << 21) | (is_double << 22) | (Rm << 16) | (op << 14) |
|
|
(1 << 13) | (Rn << 5) | opcode2);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitCondSelect(bool M, bool S, CCFlags cond, ARM64Reg Rd, ARM64Reg Rn,
|
|
ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rd), "%s doesn't support vector!", __FUNCTION__);
|
|
bool is_double = IsDouble(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((M << 31) | (S << 29) | (0xF1 << 21) | (is_double << 22) | (Rm << 16) | (cond << 12) |
|
|
(3 << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitPermute(u32 size, u32 op, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsSingle(Rd), "%s doesn't support singles!", __FUNCTION__);
|
|
|
|
bool quad = IsQuad(Rd);
|
|
|
|
u32 encoded_size = 0;
|
|
if (size == 16)
|
|
encoded_size = 1;
|
|
else if (size == 32)
|
|
encoded_size = 2;
|
|
else if (size == 64)
|
|
encoded_size = 3;
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((quad << 30) | (7 << 25) | (encoded_size << 22) | (Rm << 16) | (op << 12) | (1 << 11) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitScalarImm(bool M, bool S, u32 type, u32 imm5, ARM64Reg Rd, u32 imm8)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rd), "%s doesn't support vector!", __FUNCTION__);
|
|
|
|
bool is_double = !IsSingle(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
|
|
Write32((M << 31) | (S << 29) | (0xF1 << 21) | (is_double << 22) | (type << 22) | (imm8 << 13) |
|
|
(1 << 12) | (imm5 << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitShiftImm(bool Q, bool U, u32 immh, u32 immb, u32 opcode, ARM64Reg Rd,
|
|
ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, immh, "%s bad encoding! Can't have zero immh", __FUNCTION__);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((Q << 30) | (U << 29) | (0xF << 24) | (immh << 19) | (immb << 16) | (opcode << 11) |
|
|
(1 << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitScalarShiftImm(bool U, u32 immh, u32 immb, u32 opcode, ARM64Reg Rd,
|
|
ARM64Reg Rn)
|
|
{
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((2 << 30) | (U << 29) | (0x3E << 23) | (immh << 19) | (immb << 16) | (opcode << 11) |
|
|
(1 << 10) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitLoadStoreMultipleStructure(u32 size, bool L, u32 opcode, ARM64Reg Rt,
|
|
ARM64Reg Rn)
|
|
{
|
|
bool quad = IsQuad(Rt);
|
|
u32 encoded_size = 0;
|
|
|
|
if (size == 16)
|
|
encoded_size = 1;
|
|
else if (size == 32)
|
|
encoded_size = 2;
|
|
else if (size == 64)
|
|
encoded_size = 3;
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((quad << 30) | (3 << 26) | (L << 22) | (opcode << 12) | (encoded_size << 10) | (Rn << 5) |
|
|
Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitLoadStoreMultipleStructurePost(u32 size, bool L, u32 opcode,
|
|
ARM64Reg Rt, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
bool quad = IsQuad(Rt);
|
|
u32 encoded_size = 0;
|
|
|
|
if (size == 16)
|
|
encoded_size = 1;
|
|
else if (size == 32)
|
|
encoded_size = 2;
|
|
else if (size == 64)
|
|
encoded_size = 3;
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((quad << 30) | (0b11001 << 23) | (L << 22) | (Rm << 16) | (opcode << 12) |
|
|
(encoded_size << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitScalar1Source(bool M, bool S, u32 type, u32 opcode, ARM64Reg Rd,
|
|
ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rd), "%s doesn't support vector!", __FUNCTION__);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((M << 31) | (S << 29) | (0xF1 << 21) | (type << 22) | (opcode << 15) | (1 << 14) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitVectorxElement(bool U, u32 size, bool L, u32 opcode, bool H,
|
|
ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
bool quad = IsQuad(Rd);
|
|
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
|
|
Write32((quad << 30) | (U << 29) | (0xF << 24) | (size << 22) | (L << 21) | (Rm << 16) |
|
|
(opcode << 12) | (H << 11) | (Rn << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitLoadStoreUnscaled(u32 size, u32 op, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm < -256 || imm > 255), "%s received too large offset: %d",
|
|
__FUNCTION__, imm);
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((size << 30) | (0xF << 26) | (op << 22) | ((imm & 0x1FF) << 12) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EncodeLoadStorePair(u32 size, bool load, IndexType type, ARM64Reg Rt,
|
|
ARM64Reg Rt2, ARM64Reg Rn, s32 imm)
|
|
{
|
|
u32 type_encode = 0;
|
|
u32 opc = 0;
|
|
|
|
switch (type)
|
|
{
|
|
case INDEX_SIGNED:
|
|
type_encode = 0b010;
|
|
break;
|
|
case INDEX_POST:
|
|
type_encode = 0b001;
|
|
break;
|
|
case INDEX_PRE:
|
|
type_encode = 0b011;
|
|
break;
|
|
case INDEX_UNSIGNED:
|
|
_assert_msg_(DYNA_REC, false, "%s doesn't support INDEX_UNSIGNED!", __FUNCTION__);
|
|
break;
|
|
}
|
|
|
|
if (size == 128)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm & 0xF), "%s received invalid offset 0x%x!", __FUNCTION__, imm);
|
|
opc = 2;
|
|
imm >>= 4;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm & 0x7), "%s received invalid offset 0x%x!", __FUNCTION__, imm);
|
|
opc = 1;
|
|
imm >>= 3;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(imm & 0x3), "%s received invalid offset 0x%x!", __FUNCTION__, imm);
|
|
opc = 0;
|
|
imm >>= 2;
|
|
}
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rt2 = DecodeReg(Rt2);
|
|
Rn = DecodeReg(Rn);
|
|
|
|
Write32((opc << 30) | (0b1011 << 26) | (type_encode << 23) | (load << 22) | ((imm & 0x7F) << 15) |
|
|
(Rt2 << 10) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EncodeLoadStoreRegisterOffset(u32 size, bool load, ARM64Reg Rt, ARM64Reg Rn,
|
|
ArithOption Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, Rm.GetType() == ArithOption::TYPE_EXTENDEDREG,
|
|
"%s must contain an extended reg as Rm!", __FUNCTION__);
|
|
|
|
u32 encoded_size = 0;
|
|
u32 encoded_op = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
encoded_size = 0;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
encoded_size = 1;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
encoded_size = 2;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
encoded_size = 3;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 128)
|
|
{
|
|
encoded_size = 0;
|
|
encoded_op = 2;
|
|
}
|
|
|
|
if (load)
|
|
encoded_op |= 1;
|
|
|
|
Rt = DecodeReg(Rt);
|
|
Rn = DecodeReg(Rn);
|
|
ARM64Reg decoded_Rm = DecodeReg(Rm.GetReg());
|
|
|
|
Write32((encoded_size << 30) | (encoded_op << 22) | (0b111100001 << 21) | (decoded_Rm << 16) |
|
|
Rm.GetData() | (1 << 11) | (Rn << 5) | Rt);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EncodeModImm(bool Q, u8 op, u8 cmode, u8 o2, ARM64Reg Rd, u8 abcdefgh)
|
|
{
|
|
union
|
|
{
|
|
u8 hex;
|
|
struct
|
|
{
|
|
unsigned defgh : 5;
|
|
unsigned abc : 3;
|
|
};
|
|
} v;
|
|
v.hex = abcdefgh;
|
|
Rd = DecodeReg(Rd);
|
|
Write32((Q << 30) | (op << 29) | (0xF << 24) | (v.abc << 16) | (cmode << 12) | (o2 << 11) |
|
|
(1 << 10) | (v.defgh << 5) | Rd);
|
|
}
|
|
|
|
void ARM64FloatEmitter::LDR(u8 size, IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EmitLoadStoreImmediate(size, 1, type, Rt, Rn, imm);
|
|
}
|
|
void ARM64FloatEmitter::STR(u8 size, IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
EmitLoadStoreImmediate(size, 0, type, Rt, Rn, imm);
|
|
}
|
|
|
|
// Loadstore unscaled
|
|
void ARM64FloatEmitter::LDUR(u8 size, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
u32 encoded_size = 0;
|
|
u32 encoded_op = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
encoded_size = 0;
|
|
encoded_op = 1;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
encoded_size = 1;
|
|
encoded_op = 1;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
encoded_size = 2;
|
|
encoded_op = 1;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
encoded_size = 3;
|
|
encoded_op = 1;
|
|
}
|
|
else if (size == 128)
|
|
{
|
|
encoded_size = 0;
|
|
encoded_op = 3;
|
|
}
|
|
|
|
EmitLoadStoreUnscaled(encoded_size, encoded_op, Rt, Rn, imm);
|
|
}
|
|
void ARM64FloatEmitter::STUR(u8 size, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
|
|
{
|
|
u32 encoded_size = 0;
|
|
u32 encoded_op = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
encoded_size = 0;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
encoded_size = 1;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
encoded_size = 2;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
encoded_size = 3;
|
|
encoded_op = 0;
|
|
}
|
|
else if (size == 128)
|
|
{
|
|
encoded_size = 0;
|
|
encoded_op = 2;
|
|
}
|
|
|
|
EmitLoadStoreUnscaled(encoded_size, encoded_op, Rt, Rn, imm);
|
|
}
|
|
|
|
// Loadstore single structure
|
|
void ARM64FloatEmitter::LD1(u8 size, ARM64Reg Rt, u8 index, ARM64Reg Rn)
|
|
{
|
|
bool S = 0;
|
|
u32 opcode = 0;
|
|
u32 encoded_size = 0;
|
|
ARM64Reg encoded_reg = INVALID_REG;
|
|
|
|
if (size == 8)
|
|
{
|
|
S = (index & 4) != 0;
|
|
opcode = 0;
|
|
encoded_size = index & 3;
|
|
if (index & 8)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
S = (index & 2) != 0;
|
|
opcode = 2;
|
|
encoded_size = (index & 1) << 1;
|
|
if (index & 4)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
S = (index & 1) != 0;
|
|
opcode = 4;
|
|
encoded_size = 0;
|
|
if (index & 2)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
S = 0;
|
|
opcode = 4;
|
|
encoded_size = 1;
|
|
if (index == 1)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
|
|
EmitLoadStoreSingleStructure(1, 0, opcode, S, encoded_size, encoded_reg, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::LD1(u8 size, ARM64Reg Rt, u8 index, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
bool S = 0;
|
|
u32 opcode = 0;
|
|
u32 encoded_size = 0;
|
|
ARM64Reg encoded_reg = INVALID_REG;
|
|
|
|
if (size == 8)
|
|
{
|
|
S = (index & 4) != 0;
|
|
opcode = 0;
|
|
encoded_size = index & 3;
|
|
if (index & 8)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
S = (index & 2) != 0;
|
|
opcode = 2;
|
|
encoded_size = (index & 1) << 1;
|
|
if (index & 4)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
S = (index & 1) != 0;
|
|
opcode = 4;
|
|
encoded_size = 0;
|
|
if (index & 2)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
S = 0;
|
|
opcode = 4;
|
|
encoded_size = 1;
|
|
if (index == 1)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
|
|
EmitLoadStoreSingleStructure(1, 0, opcode, S, encoded_size, encoded_reg, Rn, Rm);
|
|
}
|
|
|
|
void ARM64FloatEmitter::LD1R(u8 size, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EmitLoadStoreSingleStructure(1, 0, 6, 0, size >> 4, Rt, Rn);
|
|
}
|
|
void ARM64FloatEmitter::LD2R(u8 size, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
EmitLoadStoreSingleStructure(1, 1, 6, 0, size >> 4, Rt, Rn);
|
|
}
|
|
void ARM64FloatEmitter::LD1R(u8 size, ARM64Reg Rt, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitLoadStoreSingleStructure(1, 0, 6, 0, size >> 4, Rt, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::LD2R(u8 size, ARM64Reg Rt, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitLoadStoreSingleStructure(1, 1, 6, 0, size >> 4, Rt, Rn, Rm);
|
|
}
|
|
|
|
void ARM64FloatEmitter::ST1(u8 size, ARM64Reg Rt, u8 index, ARM64Reg Rn)
|
|
{
|
|
bool S = 0;
|
|
u32 opcode = 0;
|
|
u32 encoded_size = 0;
|
|
ARM64Reg encoded_reg = INVALID_REG;
|
|
|
|
if (size == 8)
|
|
{
|
|
S = (index & 4) != 0;
|
|
opcode = 0;
|
|
encoded_size = index & 3;
|
|
if (index & 8)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
S = (index & 2) != 0;
|
|
opcode = 2;
|
|
encoded_size = (index & 1) << 1;
|
|
if (index & 4)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
S = (index & 1) != 0;
|
|
opcode = 4;
|
|
encoded_size = 0;
|
|
if (index & 2)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
S = 0;
|
|
opcode = 4;
|
|
encoded_size = 1;
|
|
if (index == 1)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
|
|
EmitLoadStoreSingleStructure(0, 0, opcode, S, encoded_size, encoded_reg, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::ST1(u8 size, ARM64Reg Rt, u8 index, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
bool S = 0;
|
|
u32 opcode = 0;
|
|
u32 encoded_size = 0;
|
|
ARM64Reg encoded_reg = INVALID_REG;
|
|
|
|
if (size == 8)
|
|
{
|
|
S = (index & 4) != 0;
|
|
opcode = 0;
|
|
encoded_size = index & 3;
|
|
if (index & 8)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
S = (index & 2) != 0;
|
|
opcode = 2;
|
|
encoded_size = (index & 1) << 1;
|
|
if (index & 4)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
S = (index & 1) != 0;
|
|
opcode = 4;
|
|
encoded_size = 0;
|
|
if (index & 2)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
S = 0;
|
|
opcode = 4;
|
|
encoded_size = 1;
|
|
if (index == 1)
|
|
encoded_reg = EncodeRegToQuad(Rt);
|
|
else
|
|
encoded_reg = EncodeRegToDouble(Rt);
|
|
}
|
|
|
|
EmitLoadStoreSingleStructure(0, 0, opcode, S, encoded_size, encoded_reg, Rn, Rm);
|
|
}
|
|
|
|
// Loadstore multiple structure
|
|
void ARM64FloatEmitter::LD1(u8 size, u8 count, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(count == 0 || count > 4), "%s must have a count of 1 to 4 registers!",
|
|
__FUNCTION__);
|
|
u32 opcode = 0;
|
|
if (count == 1)
|
|
opcode = 0b111;
|
|
else if (count == 2)
|
|
opcode = 0b1010;
|
|
else if (count == 3)
|
|
opcode = 0b0110;
|
|
else if (count == 4)
|
|
opcode = 0b0010;
|
|
EmitLoadStoreMultipleStructure(size, 1, opcode, Rt, Rn);
|
|
}
|
|
void ARM64FloatEmitter::LD1(u8 size, u8 count, IndexType type, ARM64Reg Rt, ARM64Reg Rn,
|
|
ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(count == 0 || count > 4), "%s must have a count of 1 to 4 registers!",
|
|
__FUNCTION__);
|
|
_assert_msg_(DYNA_REC, type == INDEX_POST, "%s only supports post indexing!", __FUNCTION__);
|
|
|
|
u32 opcode = 0;
|
|
if (count == 1)
|
|
opcode = 0b111;
|
|
else if (count == 2)
|
|
opcode = 0b1010;
|
|
else if (count == 3)
|
|
opcode = 0b0110;
|
|
else if (count == 4)
|
|
opcode = 0b0010;
|
|
EmitLoadStoreMultipleStructurePost(size, 1, opcode, Rt, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::ST1(u8 size, u8 count, ARM64Reg Rt, ARM64Reg Rn)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(count == 0 || count > 4), "%s must have a count of 1 to 4 registers!",
|
|
__FUNCTION__);
|
|
u32 opcode = 0;
|
|
if (count == 1)
|
|
opcode = 0b111;
|
|
else if (count == 2)
|
|
opcode = 0b1010;
|
|
else if (count == 3)
|
|
opcode = 0b0110;
|
|
else if (count == 4)
|
|
opcode = 0b0010;
|
|
EmitLoadStoreMultipleStructure(size, 0, opcode, Rt, Rn);
|
|
}
|
|
void ARM64FloatEmitter::ST1(u8 size, u8 count, IndexType type, ARM64Reg Rt, ARM64Reg Rn,
|
|
ARM64Reg Rm)
|
|
{
|
|
_assert_msg_(DYNA_REC, !(count == 0 || count > 4), "%s must have a count of 1 to 4 registers!",
|
|
__FUNCTION__);
|
|
_assert_msg_(DYNA_REC, type == INDEX_POST, "%s only supports post indexing!", __FUNCTION__);
|
|
|
|
u32 opcode = 0;
|
|
if (count == 1)
|
|
opcode = 0b111;
|
|
else if (count == 2)
|
|
opcode = 0b1010;
|
|
else if (count == 3)
|
|
opcode = 0b0110;
|
|
else if (count == 4)
|
|
opcode = 0b0010;
|
|
EmitLoadStoreMultipleStructurePost(size, 0, opcode, Rt, Rn, Rm);
|
|
}
|
|
|
|
// Scalar - 1 Source
|
|
void ARM64FloatEmitter::FMOV(ARM64Reg Rd, ARM64Reg Rn, bool top)
|
|
{
|
|
if (IsScalar(Rd) && IsScalar(Rn))
|
|
{
|
|
EmitScalar1Source(0, 0, IsDouble(Rd), 0, Rd, Rn);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsQuad(Rd) && !IsQuad(Rn), "FMOV can't move to/from quads");
|
|
int rmode = 0;
|
|
int opcode = 6;
|
|
int sf = 0;
|
|
if (IsSingle(Rd) && !Is64Bit(Rn) && !top)
|
|
{
|
|
// GPR to scalar single
|
|
opcode |= 1;
|
|
}
|
|
else if (!Is64Bit(Rd) && IsSingle(Rn) && !top)
|
|
{
|
|
// Scalar single to GPR - defaults are correct
|
|
}
|
|
else
|
|
{
|
|
// TODO
|
|
_assert_msg_(DYNA_REC, 0, "FMOV: Unhandled case");
|
|
}
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Write32((sf << 31) | (0x1e2 << 20) | (rmode << 19) | (opcode << 16) | (Rn << 5) | Rd);
|
|
}
|
|
}
|
|
|
|
// Loadstore paired
|
|
void ARM64FloatEmitter::LDP(u8 size, IndexType type, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn,
|
|
s32 imm)
|
|
{
|
|
EncodeLoadStorePair(size, true, type, Rt, Rt2, Rn, imm);
|
|
}
|
|
void ARM64FloatEmitter::STP(u8 size, IndexType type, ARM64Reg Rt, ARM64Reg Rt2, ARM64Reg Rn,
|
|
s32 imm)
|
|
{
|
|
EncodeLoadStorePair(size, false, type, Rt, Rt2, Rn, imm);
|
|
}
|
|
|
|
// Loadstore register offset
|
|
void ARM64FloatEmitter::STR(u8 size, ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(size, false, Rt, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::LDR(u8 size, ARM64Reg Rt, ARM64Reg Rn, ArithOption Rm)
|
|
{
|
|
EncodeLoadStoreRegisterOffset(size, true, Rt, Rn, Rm);
|
|
}
|
|
|
|
void ARM64FloatEmitter::FABS(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EmitScalar1Source(0, 0, IsDouble(Rd), 1, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FNEG(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EmitScalar1Source(0, 0, IsDouble(Rd), 2, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FSQRT(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
EmitScalar1Source(0, 0, IsDouble(Rd), 3, Rd, Rn);
|
|
}
|
|
|
|
// Scalar - 2 Source
|
|
void ARM64FloatEmitter::FADD(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 2, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMUL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 0, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FSUB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 3, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FDIV(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 1, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMAX(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 4, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMIN(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 5, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMAXNM(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 6, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMINNM(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 7, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FNMUL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitScalar2Source(0, 0, IsDouble(Rd), 8, Rd, Rn, Rm);
|
|
}
|
|
|
|
void ARM64FloatEmitter::FMADD(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EmitScalar3Source(IsDouble(Rd), Rd, Rn, Rm, Ra, 0);
|
|
}
|
|
void ARM64FloatEmitter::FMSUB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EmitScalar3Source(IsDouble(Rd), Rd, Rn, Rm, Ra, 1);
|
|
}
|
|
void ARM64FloatEmitter::FNMADD(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EmitScalar3Source(IsDouble(Rd), Rd, Rn, Rm, Ra, 2);
|
|
}
|
|
void ARM64FloatEmitter::FNMSUB(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, ARM64Reg Ra)
|
|
{
|
|
EmitScalar3Source(IsDouble(Rd), Rd, Rn, Rm, Ra, 3);
|
|
}
|
|
|
|
void ARM64FloatEmitter::EmitScalar3Source(bool isDouble, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm,
|
|
ARM64Reg Ra, int opcode)
|
|
{
|
|
int type = isDouble ? 1 : 0;
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
Rm = DecodeReg(Rm);
|
|
Ra = DecodeReg(Ra);
|
|
int o1 = opcode >> 1;
|
|
int o0 = opcode & 1;
|
|
m_emit->Write32((0x1F << 24) | (type << 22) | (o1 << 21) | (Rm << 16) | (o0 << 15) | (Ra << 10) |
|
|
(Rn << 5) | Rd);
|
|
}
|
|
|
|
// Scalar floating point immediate
|
|
void ARM64FloatEmitter::FMOV(ARM64Reg Rd, uint8_t imm8)
|
|
{
|
|
EmitScalarImm(0, 0, 0, 0, Rd, imm8);
|
|
}
|
|
|
|
// Vector
|
|
void ARM64FloatEmitter::AND(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, 0, 3, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::BSL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(1, 1, 3, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::DUP(u8 size, ARM64Reg Rd, ARM64Reg Rn, u8 index)
|
|
{
|
|
u32 imm5 = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
imm5 = 1;
|
|
imm5 |= index << 1;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
imm5 = 2;
|
|
imm5 |= index << 2;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
imm5 = 4;
|
|
imm5 |= index << 3;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
imm5 = 8;
|
|
imm5 |= index << 4;
|
|
}
|
|
|
|
EmitCopy(IsQuad(Rd), 0, imm5, 0, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FABS(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, 2 | (size >> 6), 0xF, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FADD(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, size >> 6, 0x1A, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMAX(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, size >> 6, 0b11110, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMLA(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, size >> 6, 0x19, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMIN(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, 2 | size >> 6, 0b11110, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FCVTL(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(false, 0, size >> 6, 0x17, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCVTL2(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(true, 0, size >> 6, 0x17, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCVTN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, dest_size >> 5, 0x16, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCVTZS(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, 2 | (size >> 6), 0x1B, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCVTZU(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, 2 | (size >> 6), 0x1B, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FDIV(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(1, size >> 6, 0x1F, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMUL(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(1, size >> 6, 0x1B, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FNEG(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, 2 | (size >> 6), 0xF, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FRECPE(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, 2 | (size >> 6), 0x1D, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FRSQRTE(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, 2 | (size >> 6), 0x1D, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FSUB(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, 2 | (size >> 6), 0x1A, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FMLS(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, 2 | (size >> 6), 0x19, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::NOT(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, 0, 5, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::ORR(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, 2, 3, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::REV16(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, size >> 4, 1, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::REV32(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, size >> 4, 0, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::REV64(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, size >> 4, 0, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::SCVTF(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, size >> 6, 0x1D, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::UCVTF(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, size >> 6, 0x1D, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::SCVTF(u8 size, ARM64Reg Rd, ARM64Reg Rn, int scale)
|
|
{
|
|
int imm = size * 2 - scale;
|
|
EmitShiftImm(IsQuad(Rd), 0, imm >> 3, imm & 7, 0x1C, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::UCVTF(u8 size, ARM64Reg Rd, ARM64Reg Rn, int scale)
|
|
{
|
|
int imm = size * 2 - scale;
|
|
EmitShiftImm(IsQuad(Rd), 1, imm >> 3, imm & 7, 0x1C, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::SQXTN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(false, 0, dest_size >> 4, 0b10100, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::SQXTN2(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(true, 0, dest_size >> 4, 0b10100, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::UQXTN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(false, 1, dest_size >> 4, 0b10100, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::UQXTN2(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(true, 1, dest_size >> 4, 0b10100, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::XTN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(false, 0, dest_size >> 4, 0b10010, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::XTN2(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(true, 0, dest_size >> 4, 0b10010, Rd, Rn);
|
|
}
|
|
|
|
// Move
|
|
void ARM64FloatEmitter::DUP(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
u32 imm5 = 0;
|
|
|
|
if (size == 8)
|
|
imm5 = 1;
|
|
else if (size == 16)
|
|
imm5 = 2;
|
|
else if (size == 32)
|
|
imm5 = 4;
|
|
else if (size == 64)
|
|
imm5 = 8;
|
|
|
|
EmitCopy(IsQuad(Rd), 0, imm5, 1, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::INS(u8 size, ARM64Reg Rd, u8 index, ARM64Reg Rn)
|
|
{
|
|
u32 imm5 = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
imm5 = 1;
|
|
imm5 |= index << 1;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
imm5 = 2;
|
|
imm5 |= index << 2;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
imm5 = 4;
|
|
imm5 |= index << 3;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
imm5 = 8;
|
|
imm5 |= index << 4;
|
|
}
|
|
|
|
EmitCopy(1, 0, imm5, 3, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::INS(u8 size, ARM64Reg Rd, u8 index1, ARM64Reg Rn, u8 index2)
|
|
{
|
|
u32 imm5 = 0, imm4 = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
imm5 = 1;
|
|
imm5 |= index1 << 1;
|
|
imm4 = index2;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
imm5 = 2;
|
|
imm5 |= index1 << 2;
|
|
imm4 = index2 << 1;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
imm5 = 4;
|
|
imm5 |= index1 << 3;
|
|
imm4 = index2 << 2;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
imm5 = 8;
|
|
imm5 |= index1 << 4;
|
|
imm4 = index2 << 3;
|
|
}
|
|
|
|
EmitCopy(1, 1, imm5, imm4, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::UMOV(u8 size, ARM64Reg Rd, ARM64Reg Rn, u8 index)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
_assert_msg_(DYNA_REC, Rd < SP, "%s destination must be a GPR!", __FUNCTION__);
|
|
_assert_msg_(DYNA_REC, !(b64Bit && size != 64),
|
|
"%s must have a size of 64 when destination is 64bit!", __FUNCTION__);
|
|
u32 imm5 = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
imm5 = 1;
|
|
imm5 |= index << 1;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
imm5 = 2;
|
|
imm5 |= index << 2;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
imm5 = 4;
|
|
imm5 |= index << 3;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
imm5 = 8;
|
|
imm5 |= index << 4;
|
|
}
|
|
|
|
EmitCopy(b64Bit, 0, imm5, 7, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::SMOV(u8 size, ARM64Reg Rd, ARM64Reg Rn, u8 index)
|
|
{
|
|
bool b64Bit = Is64Bit(Rd);
|
|
_assert_msg_(DYNA_REC, Rd < SP, "%s destination must be a GPR!", __FUNCTION__);
|
|
_assert_msg_(DYNA_REC, size != 64, "%s doesn't support 64bit destination. Use UMOV!",
|
|
__FUNCTION__);
|
|
u32 imm5 = 0;
|
|
|
|
if (size == 8)
|
|
{
|
|
imm5 = 1;
|
|
imm5 |= index << 1;
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
imm5 = 2;
|
|
imm5 |= index << 2;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
imm5 = 4;
|
|
imm5 |= index << 3;
|
|
}
|
|
|
|
EmitCopy(b64Bit, 0, imm5, 5, Rd, Rn);
|
|
}
|
|
|
|
// One source
|
|
void ARM64FloatEmitter::FCVT(u8 size_to, u8 size_from, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
u32 dst_encoding = 0;
|
|
u32 src_encoding = 0;
|
|
|
|
if (size_to == 16)
|
|
dst_encoding = 3;
|
|
else if (size_to == 32)
|
|
dst_encoding = 0;
|
|
else if (size_to == 64)
|
|
dst_encoding = 1;
|
|
|
|
if (size_from == 16)
|
|
src_encoding = 3;
|
|
else if (size_from == 32)
|
|
src_encoding = 0;
|
|
else if (size_from == 64)
|
|
src_encoding = 1;
|
|
|
|
Emit1Source(0, 0, src_encoding, 4 | dst_encoding, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::SCVTF(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
if (IsScalar(Rn))
|
|
{
|
|
// Source is in FP register (like destination!). We must use a vector encoding.
|
|
bool sign = false;
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
int sz = IsDouble(Rn);
|
|
Write32((0x5e << 24) | (sign << 29) | (sz << 22) | (0x876 << 10) | (Rn << 5) | Rd);
|
|
}
|
|
else
|
|
{
|
|
bool sf = Is64Bit(Rn);
|
|
u32 type = 0;
|
|
if (IsDouble(Rd))
|
|
type = 1;
|
|
EmitConversion(sf, 0, type, 0, 2, Rd, Rn);
|
|
}
|
|
}
|
|
|
|
void ARM64FloatEmitter::UCVTF(ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
if (IsScalar(Rn))
|
|
{
|
|
// Source is in FP register (like destination!). We must use a vector encoding.
|
|
bool sign = true;
|
|
Rd = DecodeReg(Rd);
|
|
Rn = DecodeReg(Rn);
|
|
int sz = IsDouble(Rn);
|
|
Write32((0x5e << 24) | (sign << 29) | (sz << 22) | (0x876 << 10) | (Rn << 5) | Rd);
|
|
}
|
|
else
|
|
{
|
|
bool sf = Is64Bit(Rn);
|
|
u32 type = 0;
|
|
if (IsDouble(Rd))
|
|
type = 1;
|
|
|
|
EmitConversion(sf, 0, type, 0, 3, Rd, Rn);
|
|
}
|
|
}
|
|
|
|
void ARM64FloatEmitter::SCVTF(ARM64Reg Rd, ARM64Reg Rn, int scale)
|
|
{
|
|
bool sf = Is64Bit(Rn);
|
|
u32 type = 0;
|
|
if (IsDouble(Rd))
|
|
type = 1;
|
|
|
|
EmitConversion2(sf, 0, false, type, 0, 2, 64 - scale, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::UCVTF(ARM64Reg Rd, ARM64Reg Rn, int scale)
|
|
{
|
|
bool sf = Is64Bit(Rn);
|
|
u32 type = 0;
|
|
if (IsDouble(Rd))
|
|
type = 1;
|
|
|
|
EmitConversion2(sf, 0, false, type, 0, 3, 64 - scale, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::FCMP(ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitCompare(0, 0, 0, 0, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FCMP(ARM64Reg Rn)
|
|
{
|
|
EmitCompare(0, 0, 0, 8, Rn, (ARM64Reg)0);
|
|
}
|
|
void ARM64FloatEmitter::FCMPE(ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitCompare(0, 0, 0, 0x10, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FCMPE(ARM64Reg Rn)
|
|
{
|
|
EmitCompare(0, 0, 0, 0x18, Rn, (ARM64Reg)0);
|
|
}
|
|
void ARM64FloatEmitter::FCMEQ(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(0, size >> 6, 0x1C, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FCMEQ(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, 2 | (size >> 6), 0xD, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCMGE(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(1, size >> 6, 0x1C, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FCMGE(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, 2 | (size >> 6), 0x0C, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCMGT(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitThreeSame(1, 2 | (size >> 6), 0x1C, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::FCMGT(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, 2 | (size >> 6), 0x0C, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCMLE(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 1, 2 | (size >> 6), 0xD, Rd, Rn);
|
|
}
|
|
void ARM64FloatEmitter::FCMLT(u8 size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
Emit2RegMisc(IsQuad(Rd), 0, 2 | (size >> 6), 0xE, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::FCSEL(ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, CCFlags cond)
|
|
{
|
|
EmitCondSelect(0, 0, cond, Rd, Rn, Rm);
|
|
}
|
|
|
|
// Permute
|
|
void ARM64FloatEmitter::UZP1(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitPermute(size, 0b001, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::TRN1(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitPermute(size, 0b010, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::ZIP1(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitPermute(size, 0b011, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::UZP2(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitPermute(size, 0b101, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::TRN2(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitPermute(size, 0b110, Rd, Rn, Rm);
|
|
}
|
|
void ARM64FloatEmitter::ZIP2(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm)
|
|
{
|
|
EmitPermute(size, 0b111, Rd, Rn, Rm);
|
|
}
|
|
|
|
// Shift by immediate
|
|
void ARM64FloatEmitter::SSHLL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift)
|
|
{
|
|
SSHLL(src_size, Rd, Rn, shift, false);
|
|
}
|
|
void ARM64FloatEmitter::SSHLL2(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift)
|
|
{
|
|
SSHLL(src_size, Rd, Rn, shift, true);
|
|
}
|
|
void ARM64FloatEmitter::SHRN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift)
|
|
{
|
|
SHRN(dest_size, Rd, Rn, shift, false);
|
|
}
|
|
void ARM64FloatEmitter::SHRN2(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift)
|
|
{
|
|
SHRN(dest_size, Rd, Rn, shift, true);
|
|
}
|
|
void ARM64FloatEmitter::USHLL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift)
|
|
{
|
|
USHLL(src_size, Rd, Rn, shift, false);
|
|
}
|
|
void ARM64FloatEmitter::USHLL2(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift)
|
|
{
|
|
USHLL(src_size, Rd, Rn, shift, true);
|
|
}
|
|
void ARM64FloatEmitter::SXTL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
SXTL(src_size, Rd, Rn, false);
|
|
}
|
|
void ARM64FloatEmitter::SXTL2(u8 src_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
SXTL(src_size, Rd, Rn, true);
|
|
}
|
|
void ARM64FloatEmitter::UXTL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
UXTL(src_size, Rd, Rn, false);
|
|
}
|
|
void ARM64FloatEmitter::UXTL2(u8 src_size, ARM64Reg Rd, ARM64Reg Rn)
|
|
{
|
|
UXTL(src_size, Rd, Rn, true);
|
|
}
|
|
|
|
void ARM64FloatEmitter::SSHLL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift, bool upper)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift < src_size, "%s shift amount must less than the element size!",
|
|
__FUNCTION__);
|
|
u32 immh = 0;
|
|
u32 immb = shift & 0xFFF;
|
|
|
|
if (src_size == 8)
|
|
{
|
|
immh = 1;
|
|
}
|
|
else if (src_size == 16)
|
|
{
|
|
immh = 2 | ((shift >> 3) & 1);
|
|
}
|
|
else if (src_size == 32)
|
|
{
|
|
immh = 4 | ((shift >> 3) & 3);
|
|
;
|
|
}
|
|
EmitShiftImm(upper, 0, immh, immb, 0b10100, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::USHLL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift, bool upper)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift < src_size, "%s shift amount must less than the element size!",
|
|
__FUNCTION__);
|
|
u32 immh = 0;
|
|
u32 immb = shift & 0xFFF;
|
|
|
|
if (src_size == 8)
|
|
{
|
|
immh = 1;
|
|
}
|
|
else if (src_size == 16)
|
|
{
|
|
immh = 2 | ((shift >> 3) & 1);
|
|
}
|
|
else if (src_size == 32)
|
|
{
|
|
immh = 4 | ((shift >> 3) & 3);
|
|
;
|
|
}
|
|
EmitShiftImm(upper, 1, immh, immb, 0b10100, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::SHRN(u8 dest_size, ARM64Reg Rd, ARM64Reg Rn, u32 shift, bool upper)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift < dest_size, "%s shift amount must less than the element size!",
|
|
__FUNCTION__);
|
|
u32 immh = 0;
|
|
u32 immb = shift & 0xFFF;
|
|
|
|
if (dest_size == 8)
|
|
{
|
|
immh = 1;
|
|
}
|
|
else if (dest_size == 16)
|
|
{
|
|
immh = 2 | ((shift >> 3) & 1);
|
|
}
|
|
else if (dest_size == 32)
|
|
{
|
|
immh = 4 | ((shift >> 3) & 3);
|
|
;
|
|
}
|
|
EmitShiftImm(upper, 1, immh, immb, 0b10000, Rd, Rn);
|
|
}
|
|
|
|
void ARM64FloatEmitter::SXTL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, bool upper)
|
|
{
|
|
SSHLL(src_size, Rd, Rn, 0, upper);
|
|
}
|
|
|
|
void ARM64FloatEmitter::UXTL(u8 src_size, ARM64Reg Rd, ARM64Reg Rn, bool upper)
|
|
{
|
|
USHLL(src_size, Rd, Rn, 0, upper);
|
|
}
|
|
|
|
// vector x indexed element
|
|
void ARM64FloatEmitter::FMUL(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, u8 index)
|
|
{
|
|
_assert_msg_(DYNA_REC, size == 32 || size == 64, "%s only supports 32bit or 64bit size!",
|
|
__FUNCTION__);
|
|
|
|
bool L = false;
|
|
bool H = false;
|
|
if (size == 32)
|
|
{
|
|
L = index & 1;
|
|
H = (index >> 1) & 1;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
H = index == 1;
|
|
}
|
|
|
|
EmitVectorxElement(0, 2 | (size >> 6), L, 0x9, H, Rd, Rn, Rm);
|
|
}
|
|
|
|
void ARM64FloatEmitter::FMLA(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, u8 index)
|
|
{
|
|
_assert_msg_(DYNA_REC, size == 32 || size == 64, "%s only supports 32bit or 64bit size!",
|
|
__FUNCTION__);
|
|
|
|
bool L = false;
|
|
bool H = false;
|
|
if (size == 32)
|
|
{
|
|
L = index & 1;
|
|
H = (index >> 1) & 1;
|
|
}
|
|
else if (size == 64)
|
|
{
|
|
H = index == 1;
|
|
}
|
|
|
|
EmitVectorxElement(0, 2 | (size >> 6), L, 1, H, Rd, Rn, Rm);
|
|
}
|
|
|
|
// Modified Immediate
|
|
void ARM64FloatEmitter::MOVI(u8 size, ARM64Reg Rd, u64 imm, u8 shift)
|
|
{
|
|
bool Q = IsQuad(Rd);
|
|
u8 cmode = 0;
|
|
u8 op = 0;
|
|
u8 abcdefgh = imm & 0xFF;
|
|
if (size == 8)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift == 0, "%s(size8) doesn't support shift!", __FUNCTION__);
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFULL), "%s(size8) only supports 8bit values!", __FUNCTION__);
|
|
}
|
|
else if (size == 16)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift == 0 || shift == 8, "%s(size16) only supports shift of {0, 8}!",
|
|
__FUNCTION__);
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFULL), "%s(size16) only supports 8bit values!",
|
|
__FUNCTION__);
|
|
|
|
if (shift == 8)
|
|
cmode |= 2;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift == 0 || shift == 8 || shift == 16 || shift == 24,
|
|
"%s(size32) only supports shift of {0, 8, 16, 24}!", __FUNCTION__);
|
|
// XXX: Implement support for MOVI - shifting ones variant
|
|
_assert_msg_(DYNA_REC, !(imm & ~0xFFULL), "%s(size32) only supports 8bit values!",
|
|
__FUNCTION__);
|
|
switch (shift)
|
|
{
|
|
case 8:
|
|
cmode |= 2;
|
|
break;
|
|
case 16:
|
|
cmode |= 4;
|
|
break;
|
|
case 24:
|
|
cmode |= 6;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else // 64
|
|
{
|
|
_assert_msg_(DYNA_REC, shift == 0, "%s(size64) doesn't support shift!", __FUNCTION__);
|
|
|
|
op = 1;
|
|
cmode = 0xE;
|
|
abcdefgh = 0;
|
|
for (int i = 0; i < 8; ++i)
|
|
{
|
|
u8 tmp = (imm >> (i << 3)) & 0xFF;
|
|
_assert_msg_(DYNA_REC, tmp == 0xFF || tmp == 0, "%s(size64) Invalid immediate!",
|
|
__FUNCTION__);
|
|
if (tmp == 0xFF)
|
|
abcdefgh |= (1 << i);
|
|
}
|
|
}
|
|
EncodeModImm(Q, op, cmode, 0, Rd, abcdefgh);
|
|
}
|
|
|
|
void ARM64FloatEmitter::BIC(u8 size, ARM64Reg Rd, u8 imm, u8 shift)
|
|
{
|
|
bool Q = IsQuad(Rd);
|
|
u8 cmode = 1;
|
|
u8 op = 1;
|
|
if (size == 16)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift == 0 || shift == 8, "%s(size16) only supports shift of {0, 8}!",
|
|
__FUNCTION__);
|
|
|
|
if (shift == 8)
|
|
cmode |= 2;
|
|
}
|
|
else if (size == 32)
|
|
{
|
|
_assert_msg_(DYNA_REC, shift == 0 || shift == 8 || shift == 16 || shift == 24,
|
|
"%s(size32) only supports shift of {0, 8, 16, 24}!", __FUNCTION__);
|
|
// XXX: Implement support for MOVI - shifting ones variant
|
|
switch (shift)
|
|
{
|
|
case 8:
|
|
cmode |= 2;
|
|
break;
|
|
case 16:
|
|
cmode |= 4;
|
|
break;
|
|
case 24:
|
|
cmode |= 6;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
_assert_msg_(DYNA_REC, false, "%s only supports size of {16, 32}!", __FUNCTION__);
|
|
EncodeModImm(Q, op, cmode, 0, Rd, imm);
|
|
}
|
|
|
|
void ARM64FloatEmitter::ABI_PushRegisters(BitSet32 registers, ARM64Reg tmp)
|
|
{
|
|
bool bundled_loadstore = false;
|
|
|
|
for (int i = 0; i < 32; ++i)
|
|
{
|
|
if (!registers[i])
|
|
continue;
|
|
|
|
int count = 0;
|
|
while (++count < 4 && (i + count) < 32 && registers[i + count])
|
|
{
|
|
}
|
|
if (count > 1)
|
|
{
|
|
bundled_loadstore = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bundled_loadstore && tmp != INVALID_REG)
|
|
{
|
|
int num_regs = registers.Count();
|
|
m_emit->SUB(SP, SP, num_regs * 16);
|
|
m_emit->ADD(tmp, SP, 0);
|
|
std::vector<ARM64Reg> island_regs;
|
|
for (int i = 0; i < 32; ++i)
|
|
{
|
|
if (!registers[i])
|
|
continue;
|
|
|
|
int count = 0;
|
|
|
|
// 0 = true
|
|
// 1 < 4 && registers[i + 1] true!
|
|
// 2 < 4 && registers[i + 2] true!
|
|
// 3 < 4 && registers[i + 3] true!
|
|
// 4 < 4 && registers[i + 4] false!
|
|
while (++count < 4 && (i + count) < 32 && registers[i + count])
|
|
{
|
|
}
|
|
|
|
if (count == 1)
|
|
island_regs.push_back((ARM64Reg)(Q0 + i));
|
|
else
|
|
ST1(64, count, INDEX_POST, (ARM64Reg)(Q0 + i), tmp);
|
|
|
|
i += count - 1;
|
|
}
|
|
|
|
// Handle island registers
|
|
std::vector<ARM64Reg> pair_regs;
|
|
for (auto& it : island_regs)
|
|
{
|
|
pair_regs.push_back(it);
|
|
if (pair_regs.size() == 2)
|
|
{
|
|
STP(128, INDEX_POST, pair_regs[0], pair_regs[1], tmp, 32);
|
|
pair_regs.clear();
|
|
}
|
|
}
|
|
if (pair_regs.size())
|
|
STR(128, INDEX_POST, pair_regs[0], tmp, 16);
|
|
}
|
|
else
|
|
{
|
|
std::vector<ARM64Reg> pair_regs;
|
|
for (auto it : registers)
|
|
{
|
|
pair_regs.push_back((ARM64Reg)(Q0 + it));
|
|
if (pair_regs.size() == 2)
|
|
{
|
|
STP(128, INDEX_PRE, pair_regs[0], pair_regs[1], SP, -32);
|
|
pair_regs.clear();
|
|
}
|
|
}
|
|
if (pair_regs.size())
|
|
STR(128, INDEX_PRE, pair_regs[0], SP, -16);
|
|
}
|
|
}
|
|
void ARM64FloatEmitter::ABI_PopRegisters(BitSet32 registers, ARM64Reg tmp)
|
|
{
|
|
bool bundled_loadstore = false;
|
|
int num_regs = registers.Count();
|
|
|
|
for (int i = 0; i < 32; ++i)
|
|
{
|
|
if (!registers[i])
|
|
continue;
|
|
|
|
int count = 0;
|
|
while (++count < 4 && (i + count) < 32 && registers[i + count])
|
|
{
|
|
}
|
|
if (count > 1)
|
|
{
|
|
bundled_loadstore = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bundled_loadstore && tmp != INVALID_REG)
|
|
{
|
|
// The temporary register is only used to indicate that we can use this code path
|
|
std::vector<ARM64Reg> island_regs;
|
|
for (int i = 0; i < 32; ++i)
|
|
{
|
|
if (!registers[i])
|
|
continue;
|
|
|
|
int count = 0;
|
|
while (++count < 4 && (i + count) < 32 && registers[i + count])
|
|
{
|
|
}
|
|
|
|
if (count == 1)
|
|
island_regs.push_back((ARM64Reg)(Q0 + i));
|
|
else
|
|
LD1(64, count, INDEX_POST, (ARM64Reg)(Q0 + i), SP);
|
|
|
|
i += count - 1;
|
|
}
|
|
|
|
// Handle island registers
|
|
std::vector<ARM64Reg> pair_regs;
|
|
for (auto& it : island_regs)
|
|
{
|
|
pair_regs.push_back(it);
|
|
if (pair_regs.size() == 2)
|
|
{
|
|
LDP(128, INDEX_POST, pair_regs[0], pair_regs[1], SP, 32);
|
|
pair_regs.clear();
|
|
}
|
|
}
|
|
if (pair_regs.size())
|
|
LDR(128, INDEX_POST, pair_regs[0], SP, 16);
|
|
}
|
|
else
|
|
{
|
|
bool odd = num_regs % 2;
|
|
std::vector<ARM64Reg> pair_regs;
|
|
for (int i = 31; i >= 0; --i)
|
|
{
|
|
if (!registers[i])
|
|
continue;
|
|
|
|
if (odd)
|
|
{
|
|
// First load must be a regular LDR if odd
|
|
odd = false;
|
|
LDR(128, INDEX_POST, (ARM64Reg)(Q0 + i), SP, 16);
|
|
}
|
|
else
|
|
{
|
|
pair_regs.push_back((ARM64Reg)(Q0 + i));
|
|
if (pair_regs.size() == 2)
|
|
{
|
|
LDP(128, INDEX_POST, pair_regs[1], pair_regs[0], SP, 32);
|
|
pair_regs.clear();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::ANDI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
unsigned int n, imm_s, imm_r;
|
|
if (!Is64Bit(Rn))
|
|
imm &= 0xFFFFFFFF;
|
|
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
|
|
{
|
|
AND(Rd, Rn, imm_r, imm_s, n != 0);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
|
|
"ANDI2R - failed to construct logical immediate value from %08x, need scratch",
|
|
(u32)imm);
|
|
MOVI2R(scratch, imm);
|
|
AND(Rd, Rn, scratch);
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::ORRI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
unsigned int n, imm_s, imm_r;
|
|
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
|
|
{
|
|
ORR(Rd, Rn, imm_r, imm_s, n != 0);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
|
|
"ORRI2R - failed to construct logical immediate value from %08x, need scratch",
|
|
(u32)imm);
|
|
MOVI2R(scratch, imm);
|
|
ORR(Rd, Rn, scratch);
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::EORI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
unsigned int n, imm_s, imm_r;
|
|
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
|
|
{
|
|
EOR(Rd, Rn, imm_r, imm_s, n != 0);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
|
|
"EORI2R - failed to construct logical immediate value from %08x, need scratch",
|
|
(u32)imm);
|
|
MOVI2R(scratch, imm);
|
|
EOR(Rd, Rn, scratch);
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::ANDSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
unsigned int n, imm_s, imm_r;
|
|
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
|
|
{
|
|
ANDS(Rd, Rn, imm_r, imm_s, n != 0);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
|
|
"ANDSI2R - failed to construct logical immediate value from %08x, need scratch",
|
|
(u32)imm);
|
|
MOVI2R(scratch, imm);
|
|
ANDS(Rd, Rn, scratch);
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::AddImmediate(ARM64Reg Rd, ARM64Reg Rn, u64 imm, bool shift, bool negative,
|
|
bool flags)
|
|
{
|
|
switch ((negative << 1) | flags)
|
|
{
|
|
case 0:
|
|
ADD(Rd, Rn, imm, shift);
|
|
break;
|
|
case 1:
|
|
ADDS(Rd, Rn, imm, shift);
|
|
break;
|
|
case 2:
|
|
SUB(Rd, Rn, imm, shift);
|
|
break;
|
|
case 3:
|
|
SUBS(Rd, Rn, imm, shift);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::ADDI2R_internal(ARM64Reg Rd, ARM64Reg Rn, u64 imm, bool negative, bool flags,
|
|
ARM64Reg scratch)
|
|
{
|
|
bool has_scratch = scratch != INVALID_REG;
|
|
u64 imm_neg = Is64Bit(Rd) ? -imm : -imm & 0xFFFFFFFFuLL;
|
|
bool neg_neg = negative ? false : true;
|
|
|
|
// Fast paths, aarch64 immediate instructions
|
|
// Try them all first
|
|
if (imm <= 0xFFF)
|
|
{
|
|
AddImmediate(Rd, Rn, imm, false, negative, flags);
|
|
return;
|
|
}
|
|
if (imm <= 0xFFFFFF && (imm & 0xFFF) == 0)
|
|
{
|
|
AddImmediate(Rd, Rn, imm >> 12, true, negative, flags);
|
|
return;
|
|
}
|
|
if (imm_neg <= 0xFFF)
|
|
{
|
|
AddImmediate(Rd, Rn, imm_neg, false, neg_neg, flags);
|
|
return;
|
|
}
|
|
if (imm_neg <= 0xFFFFFF && (imm_neg & 0xFFF) == 0)
|
|
{
|
|
AddImmediate(Rd, Rn, imm_neg >> 12, true, neg_neg, flags);
|
|
return;
|
|
}
|
|
|
|
// ADD+ADD is slower than MOVK+ADD, but inplace.
|
|
// But it supports a few more bits, so use it to avoid MOVK+MOVK+ADD.
|
|
// As this splits the addition in two parts, this must not be done on setting flags.
|
|
if (!flags && (imm >= 0x10000u || !has_scratch) && imm < 0x1000000u)
|
|
{
|
|
AddImmediate(Rd, Rn, imm & 0xFFF, false, negative, false);
|
|
AddImmediate(Rd, Rd, imm >> 12, true, negative, false);
|
|
return;
|
|
}
|
|
if (!flags && (imm_neg >= 0x10000u || !has_scratch) && imm_neg < 0x1000000u)
|
|
{
|
|
AddImmediate(Rd, Rn, imm_neg & 0xFFF, false, neg_neg, false);
|
|
AddImmediate(Rd, Rd, imm_neg >> 12, true, neg_neg, false);
|
|
return;
|
|
}
|
|
|
|
_assert_msg_(DYNA_REC, has_scratch,
|
|
"ADDI2R - failed to construct arithmetic immediate value from %08x, need scratch",
|
|
(u32)imm);
|
|
|
|
negative ^= MOVI2R2(scratch, imm, imm_neg);
|
|
switch ((negative << 1) | flags)
|
|
{
|
|
case 0:
|
|
ADD(Rd, Rn, scratch);
|
|
break;
|
|
case 1:
|
|
ADDS(Rd, Rn, scratch);
|
|
break;
|
|
case 2:
|
|
SUB(Rd, Rn, scratch);
|
|
break;
|
|
case 3:
|
|
SUBS(Rd, Rn, scratch);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ARM64XEmitter::ADDI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
ADDI2R_internal(Rd, Rn, imm, false, false, scratch);
|
|
}
|
|
|
|
void ARM64XEmitter::ADDSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
ADDI2R_internal(Rd, Rn, imm, false, true, scratch);
|
|
}
|
|
|
|
void ARM64XEmitter::SUBI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
ADDI2R_internal(Rd, Rn, imm, true, false, scratch);
|
|
}
|
|
|
|
void ARM64XEmitter::SUBSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
ADDI2R_internal(Rd, Rn, imm, true, true, scratch);
|
|
}
|
|
|
|
void ARM64XEmitter::CMPI2R(ARM64Reg Rn, u64 imm, ARM64Reg scratch)
|
|
{
|
|
ADDI2R_internal(Is64Bit(Rn) ? ZR : WZR, Rn, imm, true, true, scratch);
|
|
}
|
|
|
|
bool ARM64XEmitter::TryADDI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
|
|
{
|
|
u32 val;
|
|
bool shift;
|
|
if (IsImmArithmetic(imm, &val, &shift))
|
|
ADD(Rd, Rn, val, shift);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ARM64XEmitter::TrySUBI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
|
|
{
|
|
u32 val;
|
|
bool shift;
|
|
if (IsImmArithmetic(imm, &val, &shift))
|
|
SUB(Rd, Rn, val, shift);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ARM64XEmitter::TryCMPI2R(ARM64Reg Rn, u32 imm)
|
|
{
|
|
u32 val;
|
|
bool shift;
|
|
if (IsImmArithmetic(imm, &val, &shift))
|
|
CMP(Rn, val, shift);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ARM64XEmitter::TryANDI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
|
|
{
|
|
u32 n, imm_r, imm_s;
|
|
if (IsImmLogical(imm, 32, &n, &imm_s, &imm_r))
|
|
AND(Rd, Rn, imm_r, imm_s, n != 0);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
bool ARM64XEmitter::TryORRI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
|
|
{
|
|
u32 n, imm_r, imm_s;
|
|
if (IsImmLogical(imm, 32, &n, &imm_s, &imm_r))
|
|
ORR(Rd, Rn, imm_r, imm_s, n != 0);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
bool ARM64XEmitter::TryEORI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
|
|
{
|
|
u32 n, imm_r, imm_s;
|
|
if (IsImmLogical(imm, 32, &n, &imm_s, &imm_r))
|
|
EOR(Rd, Rn, imm_r, imm_s, n != 0);
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
float FPImm8ToFloat(uint8_t bits)
|
|
{
|
|
int sign = bits >> 7;
|
|
uint32_t f = (sign << 31);
|
|
int bit6 = (bits >> 6) & 1;
|
|
uint32_t exp = ((!bit6) << 7) | (0x7C * bit6) | ((bits >> 4) & 3);
|
|
uint32_t mantissa = (bits & 0xF) << 19;
|
|
f |= exp << 23;
|
|
f |= mantissa;
|
|
float fl;
|
|
memcpy(&fl, &f, sizeof(float));
|
|
return fl;
|
|
}
|
|
|
|
bool FPImm8FromFloat(float value, uint8_t* immOut)
|
|
{
|
|
uint32_t f;
|
|
memcpy(&f, &value, sizeof(float));
|
|
uint32_t mantissa4 = (f & 0x7FFFFF) >> 19;
|
|
uint32_t exponent = (f >> 23) & 0xFF;
|
|
uint32_t sign = f >> 31;
|
|
if ((exponent >> 7) == ((exponent >> 6) & 1))
|
|
return false;
|
|
uint8_t imm8 = (sign << 7) | ((!(exponent >> 7)) << 6) | ((exponent & 3) << 4) | mantissa4;
|
|
float newFloat = FPImm8ToFloat(imm8);
|
|
if (newFloat == value)
|
|
*immOut = imm8;
|
|
else
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
void ARM64FloatEmitter::MOVI2F(ARM64Reg Rd, float value, ARM64Reg scratch, bool negate)
|
|
{
|
|
_assert_msg_(DYNA_REC, !IsDouble(Rd), "MOVI2F does not yet support double precision");
|
|
uint8_t imm8;
|
|
if (value == 0.0)
|
|
{
|
|
FMOV(Rd, IsDouble(Rd) ? ZR : WZR);
|
|
if (negate)
|
|
FNEG(Rd, Rd);
|
|
// TODO: There are some other values we could generate with the float-imm instruction, like
|
|
// 1.0...
|
|
}
|
|
else if (FPImm8FromFloat(value, &imm8))
|
|
{
|
|
FMOV(Rd, imm8);
|
|
}
|
|
else
|
|
{
|
|
_assert_msg_(DYNA_REC, scratch != INVALID_REG,
|
|
"Failed to find a way to generate FP immediate %f without scratch", value);
|
|
u32 ival;
|
|
if (negate)
|
|
value = -value;
|
|
|
|
memcpy(&ival, &value, sizeof(ival));
|
|
m_emit->MOVI2R(scratch, ival);
|
|
FMOV(Rd, scratch);
|
|
}
|
|
}
|
|
|
|
// TODO: Quite a few values could be generated easily using the MOVI instruction and friends.
|
|
void ARM64FloatEmitter::MOVI2FDUP(ARM64Reg Rd, float value, ARM64Reg scratch)
|
|
{
|
|
// TODO: Make it work with more element sizes
|
|
// TODO: Optimize - there are shorter solution for many values
|
|
ARM64Reg s = (ARM64Reg)(S0 + DecodeReg(Rd));
|
|
MOVI2F(s, value, scratch);
|
|
DUP(32, Rd, Rd, 0);
|
|
}
|
|
|
|
} // namespace
|