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Tweaking load/store. Nasty.

This commit is contained in:
Ben Vanik 2014-05-30 22:29:08 -07:00
parent 7acbf759e2
commit df5d86e78c
1 changed files with 40 additions and 28 deletions
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68
src/alloy/backend/x64/x64_sequences.cc
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@ -1529,9 +1529,10 @@ void DynamicRegisterStore(void* raw_context, uint32_t address, uint64_t value) {
}
}
template <typename DEST_REG>
void EmitLoadCheck(X64Emitter& e, const RegExp& addr, DEST_REG& dest) {
void EmitLoadCheck(X64Emitter& e, const I64<>& addr_value, DEST_REG& dest) {
// rax = reserved
// if (address >> 24 == 0x7F) call register load handler;
auto addr = ComputeMemoryAddress(e, addr_value);
e.lea(e.r8d, e.ptr[addr]);
e.shr(e.r8d, 24);
e.cmp(e.r8b, 0x7F);
@ -1550,13 +1551,23 @@ void EmitLoadCheck(X64Emitter& e, const RegExp& addr, DEST_REG& dest) {
if (DEST_REG::key_type == KEY_TYPE_V_I32) {
e.mov(dest, e.dword[addr]);
}
if (IsTracingData()) {
e.mov(e.r8, dest);
e.lea(e.rdx, e.ptr[addr]);
if (DEST_REG::key_type == KEY_TYPE_V_I32) {
e.CallNative(TraceMemoryLoadI32);
} else if (DEST_REG::key_type == KEY_TYPE_V_I64) {
e.CallNative(TraceMemoryLoadI64);
}
}
e.L(skip_load);
e.outLocalLabel();
}
template <typename SRC_REG>
void EmitStoreCheck(X64Emitter& e, const RegExp& addr, SRC_REG& src) {
void EmitStoreCheck(X64Emitter& e, const I64<>& addr_value, SRC_REG& src) {
// rax = reserved
// if (address >> 24 == 0x7F) call register store handler;
auto addr = ComputeMemoryAddress(e, addr_value);
e.lea(e.r8d, e.ptr[addr]);
e.shr(e.r8d, 24);
e.cmp(e.r8b, 0x7F);
@ -1567,11 +1578,18 @@ void EmitStoreCheck(X64Emitter& e, const RegExp& addr, SRC_REG& src) {
e.lea(e.rdx, e.ptr[addr]);
if (SRC_REG::key_type == KEY_TYPE_V_I32) {
if (src.is_constant) {
e.mov(e.r8d, XESWAP32(src.constant()));
e.mov(e.r8d, XESWAP32(static_cast<uint32_t>(src.constant())));
} else {
e.mov(e.r8d, src);
e.bswap(e.r8d);
}
} else if (SRC_REG::key_type == KEY_TYPE_V_I64) {
if (src.is_constant) {
e.mov(e.r8, XESWAP64(static_cast<uint64_t>(src.constant())));
} else {
e.mov(e.r8, src);
e.bswap(e.r8);
}
}
e.CallNative(DynamicRegisterStore);
e.jmp(skip_load);
@ -1582,6 +1600,21 @@ void EmitStoreCheck(X64Emitter& e, const RegExp& addr, SRC_REG& src) {
} else {
e.mov(e.dword[addr], src);
}
} else if (SRC_REG::key_type == KEY_TYPE_V_I64) {
if (src.is_constant) {
e.MovMem64(addr, src.constant());
} else {
e.mov(e.qword[addr], src);
}
}
if (IsTracingData()) {
e.mov(e.r8, e.qword[addr]);
e.lea(e.rdx, e.ptr[addr]);
if (SRC_REG::key_type == KEY_TYPE_V_I32) {
e.CallNative(TraceMemoryStoreI32);
} else if (SRC_REG::key_type == KEY_TYPE_V_I64) {
e.CallNative(TraceMemoryStoreI64);
}
}
e.L(skip_load);
e.outLocalLabel();
@ -1619,13 +1652,7 @@ EMITTER(LOAD_I32, MATCH(I<OPCODE_LOAD, I32<>, I64<>>)) {
if (CheckLoadAccessCallback(e, i)) {
return;
}
auto addr = ComputeMemoryAddress(e, i.src1);
EmitLoadCheck(e, addr, i.dest);
if (IsTracingData()) {
e.mov(e.r8, i.dest);
e.lea(e.rdx, e.ptr[addr]);
e.CallNative(TraceMemoryLoadI32);
}
EmitLoadCheck(e, i.src1, i.dest);
}
};
EMITTER(LOAD_I64, MATCH(I<OPCODE_LOAD, I64<>, I64<>>)) {
@ -1772,13 +1799,7 @@ EMITTER(STORE_I32, MATCH(I<OPCODE_STORE, VoidOp, I64<>, I32<>>)) {
if (CheckStoreAccessCallback(e, i)) {
return;
}
auto addr = ComputeMemoryAddress(e, i.src1);
EmitStoreCheck(e, addr, i.src2);
if (IsTracingData()) {
e.mov(e.r8, e.dword[addr]);
e.lea(e.rdx, e.ptr[addr]);
e.CallNative(TraceMemoryStoreI32);
}
EmitStoreCheck(e, i.src1, i.src2);
}
};
EMITTER(STORE_I64, MATCH(I<OPCODE_STORE, VoidOp, I64<>, I64<>>)) {
@ -1786,17 +1807,7 @@ EMITTER(STORE_I64, MATCH(I<OPCODE_STORE, VoidOp, I64<>, I64<>>)) {
if (CheckStoreAccessCallback(e, i)) {
return;
}
auto addr = ComputeMemoryAddress(e, i.src1);
if (i.src2.is_constant) {
e.MovMem64(addr, i.src2.constant());
} else {
e.mov(e.qword[addr], i.src2);
}
if (IsTracingData()) {
e.mov(e.r8, e.qword[addr]);
e.lea(e.rdx, e.ptr[addr]);
e.CallNative(TraceMemoryStoreI64);
}
EmitStoreCheck(e, i.src1, i.src2);
}
};
EMITTER(STORE_F32, MATCH(I<OPCODE_STORE, VoidOp, I64<>, F32<>>)) {
@ -1940,6 +1951,7 @@ EMITTER_OPCODE_TABLE(
// ============================================================================
// OPCODE_SELECT
// ============================================================================
// dest = src1 ? src2 : src3
EMITTER(SELECT_I8, MATCH(I<OPCODE_SELECT, I8<>, I8<>, I8<>, I8<>>)) {
static void Emit(X64Emitter& e, const EmitArgType& i) {
e.test(i.src1, i.src1);