First idea for a fully portable "jit"

This commit is contained in:
Stefanos Kornilios Mitsis Poiitidis 2015-07-22 21:28:55 +02:00
parent 39ead6159b
commit cd80850acb
1 changed files with 503 additions and 0 deletions

503
core/rec-cpp/rec_cpp.cpp Normal file
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#include "types.h"
#include <map>
#if FEAT_SHREC == DYNAREC_CPP
#include "hw/sh4/sh4_opcode_list.h"
#include "hw/sh4/modules/ccn.h"
#include "hw/sh4/sh4_interrupts.h"
#include "hw/sh4/sh4_core.h"
#include "hw/sh4/dyna/ngen.h"
#include "hw/sh4/sh4_mem.h"
#include "hw/sh4/dyna/regalloc.h"
#include "emitter/x86_emitter.h"
#include "profiler/profiler.h"
#include "oslib/oslib.h"
struct DynaRBI : RuntimeBlockInfo
{
virtual u32 Relink() {
//verify(false);
return 0;
}
virtual void Relocate(void* dst) {
verify(false);
}
};
int cycle_counter;
void ngen_FailedToFindBlock_internal() {
rdv_FailedToFindBlock(Sh4cntx.pc);
}
void(*ngen_FailedToFindBlock)() = &ngen_FailedToFindBlock_internal;
void ngen_mainloop(void* v_cntx)
{
Sh4RCB* ctx = (Sh4RCB*)((u8*)v_cntx - sizeof(Sh4RCB));
cycle_counter = 0;
for (;;) {
cycle_counter = SH4_TIMESLICE;
do {
DynarecCodeEntryPtr rcb = bm_GetCode(ctx->cntx.pc);
rcb();
} while (cycle_counter > 0);
if (UpdateSystem()) {
rdv_DoInterrupts_pc(ctx->cntx.pc);
}
}
}
void ngen_init()
{
}
void ngen_GetFeatures(ngen_features* dst)
{
dst->InterpreterFallback = true;
dst->OnlyDynamicEnds = true;
}
RuntimeBlockInfo* ngen_AllocateBlock()
{
return new DynaRBI();
}
u32* GetRegPtr(u32 reg)
{
return Sh4_int_GetRegisterPtr((Sh4RegType)reg);
}
class opcodeExec {
public:
virtual void execute() = 0;
};
class opcodeDie : public opcodeExec {
void execute() {
die("death opcode");
}
};
struct opcode_ifb_pc : public opcodeExec {
OpCallFP* oph;
u32 pc;
u16 opcode;
void execute() {
next_pc = pc;
oph(opcode);
}
};
struct opcode_ifb : public opcodeExec {
OpCallFP* oph;
u16 opcode;
void execute() {
oph(opcode);
}
};
struct opcode_jdyn : public opcodeExec {
u32* src;
void execute() {
next_pc = *src;
}
};
struct opcode_jdyn_imm : public opcodeExec {
u32* src;
u32 imm;
void execute() {
next_pc = *src + imm;
}
};
struct opcode_mov32 : public opcodeExec {
u32* src;
u32* dst;
void execute() {
*dst = *src;
}
};
struct opcode_mov32_imm : public opcodeExec {
u32 src;
u32* dst;
void execute() {
*dst = src;
}
};
template <int cnt>
class fnblock {
public:
opcodeExec* ops[cnt];
int cc;
void execute() {
cycle_counter -= cc;
for (int i = 0; i < cnt; i++) {
ops[i]->execute();
}
}
static void runner(void* fnb) {
((fnblock<cnt>*)fnb)->execute();
}
};
template <>
class fnblock<0> {
void execute() {
die("WHATNOT");
}
};
struct fnrv {
void* fnb;
void(*runner)(void* fnb);
opcodeExec** ptrs;
};
template<int opcode_slots>
fnrv fnnCtor(int cycles) {
auto rv = new fnblock<opcode_slots>();
rv->cc = cycles;
fnrv rvb = { rv, &fnblock<opcode_slots>::runner, rv->ops };
return rvb;
}
template<>
fnrv fnnCtor<0>(int cycles) {
fnrv rvb = { 0, 0, 0 };
return rvb;
}
template <typename CTR>
opcodeExec* createType() {
return new CTR();
}
map< const char*, opcodeExec*(*)()> unmap = {
{ "uru", &createType<opcodeDie> },
};
struct {
void* fnb;
void(*runner)(void* fnb);
} dispatchb[8192];
template<int n>
void disaptchn() {
dispatchb[n].runner(dispatchb[n].fnb);
}
int idxnxx = 0;
//&disaptchn
#define REP_1(x, phrase) phrase < x >
#define REP_2(x, phrase) REP_1(x, phrase), REP_1(x+1, phrase)
#define REP_4(x, phrase) REP_2(x, phrase), REP_2(x+2, phrase)
#define REP_8(x, phrase) REP_4(x, phrase), REP_4(x+4, phrase)
#define REP_16(x, phrase) REP_8(x, phrase), REP_8(x+8, phrase)
#define REP_32(x, phrase) REP_16(x, phrase), REP_16(x+16, phrase)
#define REP_64(x, phrase) REP_32(x, phrase), REP_32(x+32, phrase)
#define REP_128(x, phrase) REP_64(x, phrase), REP_64(x+64, phrase)
#define REP_256(x, phrase) REP_128(x, phrase), REP_128(x+128, phrase)
#define REP_512(x, phrase) REP_256(x, phrase), REP_256(x+256, phrase)
#define REP_1024(x, phrase) REP_512(x, phrase), REP_512(x+512, phrase)
#define REP_2048(x, phrase) REP_1024(x, phrase), REP_1024(x+1024, phrase)
#define REP_4096(x, phrase) REP_2048(x, phrase), REP_2048(x+2048, phrase)
#define REP_8192(x, phrase) REP_4096(x, phrase), REP_4096(x+4096, phrase)
DynarecCodeEntryPtr FNS[] = { REP_8192(0, &disaptchn) };
typedef fnrv(*FNAFB)(int cycles);
FNAFB FNA[] = { REP_512(0, &fnnCtor) };
DynarecCodeEntryPtr getndpn_forreal(int n) {
if (n > 8192)
return 0;
else
return FNS[n];
}
FNAFB fnnCtor_forreal(int n) {
if (n > 512)
return 0;
else
return FNA[n];
}
class BlockCompiler {
public:
void compile(RuntimeBlockInfo* block, bool force_checks, bool reset, bool staging, bool optimise) {
auto ptrs = fnnCtor_forreal(block->oplist.size())(block->guest_cycles);
dispatchb[idxnxx].fnb = ptrs.fnb;
dispatchb[idxnxx].runner = ptrs.runner;
block->code = getndpn_forreal(idxnxx++);
for (size_t i = 0; i < block->oplist.size(); i++) {
shil_opcode& op = block->oplist[i];
switch (op.op) {
case shop_ifb:
{
if (op.rs1._imm) {
auto opc = new opcode_ifb_pc();
ptrs.ptrs[i] = opc;
opc->pc = op.rs2._imm;
opc->opcode = op.rs3._imm;
opc->oph = OpDesc[op.rs3._imm]->oph;
}
else {
auto opc = new opcode_ifb();
ptrs.ptrs[i] = opc;
opc->opcode = op.rs3._imm;
opc->oph = OpDesc[op.rs3._imm]->oph;
}
}
break;
case shop_jdyn:
{
if (op.rs2.is_imm()) {
auto opc = new opcode_jdyn_imm();
ptrs.ptrs[i] = opc;
opc->src = op.rs1.reg_ptr();
opc->imm = op.rs2._imm;
}
else {
auto opc = new opcode_jdyn();
ptrs.ptrs[i] = opc;
opc->src = op.rs1.reg_ptr();
}
}
break;
case shop_mov32:
{
verify(op.rd.is_reg());
verify(op.rs1.is_reg() || op.rs1.is_imm());
if (op.rs1.is_imm()) {
auto opc = new opcode_mov32_imm();
ptrs.ptrs[i] = opc;
opc->src = op.rs1._imm;
opc->dst = op.rd.reg_ptr();
}
else {
auto opc = new opcode_mov32();
ptrs.ptrs[i] = opc;
opc->src = op.rs1.reg_ptr();
opc->dst = op.rd.reg_ptr();
}
}
break;
/*
case shop_mov32:
{
verify(op.rd.is_reg());
verify(op.rs1.is_reg() || op.rs1.is_imm());
sh_to_reg(op.rs1, mov, ecx);
reg_to_sh(op.rd, ecx);
}
break;
case shop_mov64:
{
verify(op.rd.is_reg());
verify(op.rs1.is_reg() || op.rs1.is_imm());
sh_to_reg(op.rs1, mov, rcx);
reg_to_sh(op.rd, rcx);
}
break;
case shop_readm:
{
sh_to_reg(op.rs1, mov, call_regs[0]);
sh_to_reg(op.rs3, add, call_regs[0]);
u32 size = op.flags & 0x7f;
if (size == 1) {
call(ReadMem8);
movsx(rcx, al);
}
else if (size == 2) {
call(ReadMem16);
movsx(rcx, ax);
}
else if (size == 4) {
call(ReadMem32);
mov(rcx, rax);
}
else if (size == 8) {
call(ReadMem64);
mov(rcx, rax);
}
else {
die("1..8 bytes");
}
if (size != 8)
reg_to_sh(op.rd, ecx);
else
reg_to_sh(op.rd, rcx);
}
break;
case shop_writem:
{
u32 size = op.flags & 0x7f;
sh_to_reg(op.rs1, mov, call_regs[0]);
sh_to_reg(op.rs3, add, call_regs[0]);
if (size != 8)
sh_to_reg(op.rs2, mov, call_regs[1]);
else
sh_to_reg(op.rs2, mov, call_regs64[1]);
if (size == 1)
call(WriteMem8);
else if (size == 2)
call(WriteMem16);
else if (size == 4)
call(WriteMem32);
else if (size == 8)
call(WriteMem64);
else {
die("1..8 bytes");
}
}
break;
*/
default:
shil_chf[op.op](&op);
break;
}
}
verify(block->BlockType == BET_DynamicJump);
//emit_Skip(getSize());
}
struct CC_PS
{
CanonicalParamType type;
shil_param* prm;
};
vector<CC_PS> CC_pars;
void* ccfn;
void ngen_CC_Start(shil_opcode* op)
{
CC_pars.clear();
ccfn = 0;
}
void ngen_CC_param(shil_opcode& op, shil_param& prm, CanonicalParamType tp) {
CC_PS t = { tp, &prm };
CC_pars.push_back(t);
}
void ngen_CC_Call(shil_opcode*op, void* function)
{
ccfn = function;
}
void ngen_CC_Finish(shil_opcode* op)
{
//lookup
die("false");
}
};
BlockCompiler* compiler;
void ngen_Compile(RuntimeBlockInfo* block, bool force_checks, bool reset, bool staging, bool optimise)
{
verify(emit_FreeSpace() >= 16 * 1024);
compiler = new BlockCompiler();
compiler->compile(block, force_checks, reset, staging, optimise);
delete compiler;
}
void ngen_CC_Start(shil_opcode* op)
{
compiler->ngen_CC_Start(op);
}
void ngen_CC_Param(shil_opcode* op, shil_param* par, CanonicalParamType tp)
{
compiler->ngen_CC_param(*op, *par, tp);
}
void ngen_CC_Call(shil_opcode*op, void* function)
{
compiler->ngen_CC_Call(op, function);
}
void ngen_CC_Finish(shil_opcode* op)
{
compiler->ngen_CC_Finish(op);
}
void ngen_ResetBlocks()
{
idxnxx = 0;
int id = 0;
/*
while (dispatchb[id].fnb)
delete dispatchb[id].fnb;
*/
}
#endif