The-Homebrew-Cloud/dosbox-wii
2
0
Fork 0
mirror of https://github.com/retro100/dosbox-wii.git synced 2024-11-04 17:35:10 +01:00
Code Issues Packages Projects Releases Wiki Activity
ccd97a1f39
dosbox-wii/src/cpu/core_dyn_x86/decoder.h
dborth ccd97a1f39 sync to dosbox r3778
2012-02-09 02:35:43 +00:00

2714 lines
84 KiB
C
Raw Blame History

/*
* Copyright (C) 2002-2011 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#define X86_DYNFPU_DH_ENABLED
#define X86_INLINED_MEMACCESS
enum REP_Type {
REP_NONE=0,REP_NZ,REP_Z
};
static struct DynDecode {
PhysPt code;
PhysPt code_start;
PhysPt op_start;
bool big_op;
bool big_addr;
REP_Type rep;
Bitu cycles;
CacheBlock * block;
CacheBlock * active_block;
struct {
CodePageHandler * code;
Bitu index;
Bit8u * wmap;
Bit8u * invmap;
Bitu first;
} page;
struct {
Bitu val;
Bitu mod;
Bitu rm;
Bitu reg;
} modrm;
DynReg * segprefix;
} decode;
static bool MakeCodePage(Bitu lin_addr,CodePageHandler * &cph) {
Bit8u rdval;
//Ensure page contains memory:
if (GCC_UNLIKELY(mem_readb_checked(lin_addr,&rdval))) return true;
PageHandler * handler=get_tlb_readhandler(lin_addr);
if (handler->flags & PFLAG_HASCODE) {
cph=( CodePageHandler *)handler;
return false;
}
if (handler->flags & PFLAG_NOCODE) {
if (PAGING_ForcePageInit(lin_addr)) {
handler=get_tlb_readhandler(lin_addr);
if (handler->flags & PFLAG_HASCODE) {
cph=( CodePageHandler *)handler;
return false;
}
}
if (handler->flags & PFLAG_NOCODE) {
LOG_MSG("DYNX86:Can't run code in this page!");
cph=0; return false;
}
}
Bitu lin_page=lin_addr >> 12;
Bitu phys_page=lin_page;
if (!PAGING_MakePhysPage(phys_page)) {
LOG_MSG("DYNX86:Can't find physpage");
cph=0; return false;
}
/* Find a free CodePage */
if (!cache.free_pages) {
if (cache.used_pages!=decode.page.code) cache.used_pages->ClearRelease();
else {
if ((cache.used_pages->next) && (cache.used_pages->next!=decode.page.code))
cache.used_pages->next->ClearRelease();
else {
LOG_MSG("DYNX86:Invalid cache links");
cache.used_pages->ClearRelease();
}
}
}
CodePageHandler * cpagehandler=cache.free_pages;
cache.free_pages=cache.free_pages->next;
cpagehandler->prev=cache.last_page;
cpagehandler->next=0;
if (cache.last_page) cache.last_page->next=cpagehandler;
cache.last_page=cpagehandler;
if (!cache.used_pages) cache.used_pages=cpagehandler;
cpagehandler->SetupAt(phys_page,handler);
MEM_SetPageHandler(phys_page,1,cpagehandler);
PAGING_UnlinkPages(lin_page,1);
cph=cpagehandler;
return false;
}
static Bit8u decode_fetchb(void) {
if (GCC_UNLIKELY(decode.page.index>=4096)) {
/* Advance to the next page */
decode.active_block->page.end=4095;
/* trigger possible page fault here */
decode.page.first++;
Bitu fetchaddr=decode.page.first << 12;
mem_readb(fetchaddr);
MakeCodePage(fetchaddr,decode.page.code);
CacheBlock * newblock=cache_getblock();
decode.active_block->crossblock=newblock;
newblock->crossblock=decode.active_block;
decode.active_block=newblock;
decode.active_block->page.start=0;
decode.page.code->AddCrossBlock(decode.active_block);
decode.page.wmap=decode.page.code->write_map;
decode.page.invmap=decode.page.code->invalidation_map;
decode.page.index=0;
}
decode.page.wmap[decode.page.index]+=0x01;
decode.page.index++;
decode.code+=1;
return mem_readb(decode.code-1);
}
static Bit16u decode_fetchw(void) {
if (GCC_UNLIKELY(decode.page.index>=4095)) {
Bit16u val=decode_fetchb();
val|=decode_fetchb() << 8;
return val;
}
*(Bit16u *)&decode.page.wmap[decode.page.index]+=0x0101;
decode.code+=2;decode.page.index+=2;
return mem_readw(decode.code-2);
}
static Bit32u decode_fetchd(void) {
if (GCC_UNLIKELY(decode.page.index>=4093)) {
Bit32u val=decode_fetchb();
val|=decode_fetchb() << 8;
val|=decode_fetchb() << 16;
val|=decode_fetchb() << 24;
return val;
/* Advance to the next page */
}
*(Bit32u *)&decode.page.wmap[decode.page.index]+=0x01010101;
decode.code+=4;decode.page.index+=4;
return mem_readd(decode.code-4);
}
#define START_WMMEM 64
static INLINE void decode_increase_wmapmask(Bitu size) {
Bitu mapidx;
CacheBlock* activecb=decode.active_block;
if (GCC_UNLIKELY(!activecb->cache.wmapmask)) {
activecb->cache.wmapmask=(Bit8u*)malloc(START_WMMEM);
memset(activecb->cache.wmapmask,0,START_WMMEM);
activecb->cache.maskstart=decode.page.index;
activecb->cache.masklen=START_WMMEM;
mapidx=0;
} else {
mapidx=decode.page.index-activecb->cache.maskstart;
if (GCC_UNLIKELY(mapidx+size>=activecb->cache.masklen)) {
Bitu newmasklen=activecb->cache.masklen*4;
if (newmasklen<mapidx+size) newmasklen=((mapidx+size)&~3)*2;
Bit8u* tempmem=(Bit8u*)malloc(newmasklen);
memset(tempmem,0,newmasklen);
memcpy(tempmem,activecb->cache.wmapmask,activecb->cache.masklen);
free(activecb->cache.wmapmask);
activecb->cache.wmapmask=tempmem;
activecb->cache.masklen=newmasklen;
}
}
switch (size) {
case 1 : activecb->cache.wmapmask[mapidx]+=0x01; break;
case 2 : (*(Bit16u*)&activecb->cache.wmapmask[mapidx])+=0x0101; break;
case 4 : (*(Bit32u*)&activecb->cache.wmapmask[mapidx])+=0x01010101; break;
}
}
static bool decode_fetchb_imm(Bitu & val) {
if (decode.page.index<4096) {
if (decode.page.invmap != NULL) {
if (decode.page.invmap[decode.page.index] == 0) {
val=(Bit32u)decode_fetchb();
return false;
}
HostPt tlb_addr=get_tlb_read(decode.code);
if (tlb_addr) {
val=(Bitu)(tlb_addr+decode.code);
decode_increase_wmapmask(1);
decode.code++;
decode.page.index++;
return true;
}
}
}
val=(Bit32u)decode_fetchb();
return false;
}
static bool decode_fetchw_imm(Bitu & val) {
if (decode.page.index<4095) {
if (decode.page.invmap != NULL) {
if ((decode.page.invmap[decode.page.index] == 0) &&
(decode.page.invmap[decode.page.index + 1] == 0)
) {
val=decode_fetchw();
return false;
}
HostPt tlb_addr=get_tlb_read(decode.code);
if (tlb_addr) {
val=(Bitu)(tlb_addr+decode.code);
decode_increase_wmapmask(2);
decode.code+=2;
decode.page.index+=2;
return true;
}
}
}
val=decode_fetchw();
return false;
}
static bool decode_fetchd_imm(Bitu & val) {
if (decode.page.index<4093) {
if (decode.page.invmap != NULL) {
if ((decode.page.invmap[decode.page.index] == 0) &&
(decode.page.invmap[decode.page.index + 1] == 0) &&
(decode.page.invmap[decode.page.index + 2] == 0) &&
(decode.page.invmap[decode.page.index + 3] == 0)
) {
val=decode_fetchd();
return false;
}
HostPt tlb_addr=get_tlb_read(decode.code);
if (tlb_addr) {
val=(Bitu)(tlb_addr+decode.code);
decode_increase_wmapmask(4);
decode.code+=4;
decode.page.index+=4;
return true;
}
}
}
val=decode_fetchd();
return false;
}
static void dyn_reduce_cycles(void) {
gen_protectflags();
if (!decode.cycles) decode.cycles++;
gen_dop_word_imm(DOP_SUB,true,DREG(CYCLES),decode.cycles);
}
static void dyn_save_noncritical_regs(void) {
gen_releasereg(DREG(EAX));
gen_releasereg(DREG(ECX));
gen_releasereg(DREG(EDX));
gen_releasereg(DREG(EBX));
gen_releasereg(DREG(ESP));
gen_releasereg(DREG(EBP));
gen_releasereg(DREG(ESI));
gen_releasereg(DREG(EDI));
}
static void dyn_save_critical_regs(void) {
dyn_save_noncritical_regs();
gen_releasereg(DREG(FLAGS));
gen_releasereg(DREG(EIP));
gen_releasereg(DREG(CYCLES));
}
static void dyn_set_eip_last_end(DynReg * endreg) {
gen_protectflags();
gen_lea(endreg,DREG(EIP),0,0,decode.code-decode.code_start);
gen_dop_word_imm(DOP_ADD,decode.big_op,DREG(EIP),decode.op_start-decode.code_start);
}
static INLINE void dyn_set_eip_end(void) {
gen_protectflags();
gen_dop_word_imm(DOP_ADD,cpu.code.big,DREG(EIP),decode.code-decode.code_start);
}
static INLINE void dyn_set_eip_end(DynReg * endreg) {
gen_protectflags();
if (cpu.code.big) gen_dop_word(DOP_MOV,true,DREG(TMPW),DREG(EIP));
else gen_extend_word(false,DREG(TMPW),DREG(EIP));
gen_dop_word_imm(DOP_ADD,cpu.code.big,DREG(TMPW),decode.code-decode.code_start);
}
static INLINE void dyn_set_eip_last(void) {
gen_protectflags();
gen_dop_word_imm(DOP_ADD,cpu.code.big,DREG(EIP),decode.op_start-decode.code_start);
}
enum save_info_type {db_exception, cycle_check, normal, fpu_restore};
static struct {
save_info_type type;
DynState state;
Bit8u * branch_pos;
Bit32u eip_change;
Bitu cycles;
Bit8u * return_pos;
} save_info[512];
Bitu used_save_info=0;
static BlockReturn DynRunException(Bit32u eip_add,Bit32u cycle_sub,Bit32u dflags) {
reg_flags=(dflags&FMASK_TEST) | (reg_flags&(~FMASK_TEST));
reg_eip+=eip_add;
CPU_Cycles-=cycle_sub;
if (cpu.exception.which==SMC_CURRENT_BLOCK) return BR_SMCBlock;
CPU_Exception(cpu.exception.which,cpu.exception.error);
return BR_Normal;
}
static void dyn_check_bool_exception(DynReg * check) {
gen_dop_byte(DOP_OR,check,0,check,0);
save_info[used_save_info].branch_pos=gen_create_branch_long(BR_NZ);
dyn_savestate(&save_info[used_save_info].state);
if (!decode.cycles) decode.cycles++;
save_info[used_save_info].cycles=decode.cycles;
save_info[used_save_info].eip_change=decode.op_start-decode.code_start;
if (!cpu.code.big) save_info[used_save_info].eip_change&=0xffff;
save_info[used_save_info].type=db_exception;
used_save_info++;
}
static void dyn_check_bool_exception_al(void) {
cache_addw(0xc00a); // or al, al
save_info[used_save_info].branch_pos=gen_create_branch_long(BR_NZ);
dyn_savestate(&save_info[used_save_info].state);
if (!decode.cycles) decode.cycles++;
save_info[used_save_info].cycles=decode.cycles;
save_info[used_save_info].eip_change=decode.op_start-decode.code_start;
if (!cpu.code.big) save_info[used_save_info].eip_change&=0xffff;
save_info[used_save_info].type=db_exception;
used_save_info++;
}
#include "pic.h"
static void dyn_check_irqrequest(void) {
gen_load_host(&PIC_IRQCheck,DREG(TMPB),4);
gen_dop_word(DOP_OR,true,DREG(TMPB),DREG(TMPB));
save_info[used_save_info].branch_pos=gen_create_branch_long(BR_NZ);
gen_releasereg(DREG(TMPB));
dyn_savestate(&save_info[used_save_info].state);
if (!decode.cycles) decode.cycles++;
save_info[used_save_info].cycles=decode.cycles;
save_info[used_save_info].eip_change=decode.code-decode.code_start;
if (!cpu.code.big) save_info[used_save_info].eip_change&=0xffff;
save_info[used_save_info].type=normal;
used_save_info++;
}
static void dyn_check_bool_exception_ne(void) {
save_info[used_save_info].branch_pos=gen_create_branch_long(BR_Z);
dyn_savestate(&save_info[used_save_info].state);
if (!decode.cycles) decode.cycles++;
save_info[used_save_info].cycles=decode.cycles;
save_info[used_save_info].eip_change=decode.op_start-decode.code_start;
if (!cpu.code.big) save_info[used_save_info].eip_change&=0xffff;
save_info[used_save_info].type=db_exception;
used_save_info++;
}
static void dyn_fill_blocks(void) {
for (Bitu sct=0; sct<used_save_info; sct++) {
gen_fill_branch_long(save_info[sct].branch_pos);
switch (save_info[sct].type) {
case db_exception:
dyn_loadstate(&save_info[sct].state);
decode.cycles=save_info[sct].cycles;
dyn_save_critical_regs();
if (cpu.code.big) gen_call_function((void *)&DynRunException,"%Id%Id%F",save_info[sct].eip_change,save_info[sct].cycles);
else gen_call_function((void *)&DynRunException,"%Iw%Id%F",save_info[sct].eip_change,save_info[sct].cycles);
gen_return_fast(BR_Normal,true);
break;
case cycle_check:
gen_return(BR_Cycles);
break;
case normal:
dyn_loadstate(&save_info[sct].state);
gen_dop_word_imm(DOP_ADD,decode.big_op,DREG(EIP),save_info[sct].eip_change);
dyn_save_critical_regs();
gen_return(BR_Cycles);
break;
case fpu_restore:
dyn_loadstate(&save_info[sct].state);
gen_load_host(&dyn_dh_fpu.state_used,DREG(TMPB),4);
gen_sop_word(SOP_INC,true,DREG(TMPB));
GenReg * gr1=FindDynReg(DREG(TMPB));
cache_addb(0xdd); // FRSTOR fpu.state (fpu_restore)
cache_addb(0x25);
cache_addd((Bit32u)(&(dyn_dh_fpu.state[0])));
cache_addb(0x89); // mov fpu.state_used,1
cache_addb(0x05|(gr1->index<<3));
cache_addd((Bit32u)(&(dyn_dh_fpu.state_used)));
gen_releasereg(DREG(TMPB));
dyn_synchstate(&save_info[sct].state);
gen_create_jump(save_info[sct].return_pos);
break;
}
}
used_save_info=0;
}
#if !defined(X86_INLINED_MEMACCESS)
static void dyn_read_byte(DynReg * addr,DynReg * dst,Bitu high) {
gen_protectflags();
gen_call_function((void *)&mem_readb_checked,"%Dd%Id",addr,&core_dyn.readdata);
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dst,1,high);
}
static void dyn_write_byte(DynReg * addr,DynReg * val,Bitu high) {
gen_protectflags();
if (high) gen_call_function((void *)&mem_writeb_checked,"%Dd%Dh",addr,val);
else gen_call_function((void *)&mem_writeb_checked,"%Dd%Dd",addr,val);
dyn_check_bool_exception_al();
}
static void dyn_read_word(DynReg * addr,DynReg * dst,bool dword) {
gen_protectflags();
if (dword) gen_call_function((void *)&mem_readd_checked,"%Dd%Id",addr,&core_dyn.readdata);
else gen_call_function((void *)&mem_readw_checked,"%Dd%Id",addr,&core_dyn.readdata);
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dst,dword?4:2);
}
static void dyn_write_word(DynReg * addr,DynReg * val,bool dword) {
gen_protectflags();
if (dword) gen_call_function((void *)&mem_writed_checked,"%Dd%Dd",addr,val);
else gen_call_function((void *)&mem_writew_checked,"%Dd%Dd",addr,val);
dyn_check_bool_exception_al();
}
static void dyn_read_byte_release(DynReg * addr,DynReg * dst,Bitu high) {
gen_protectflags();
gen_call_function((void *)&mem_readb_checked,"%Ddr%Id",addr,&core_dyn.readdata);
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dst,1,high);
}
static void dyn_write_byte_release(DynReg * addr,DynReg * val,Bitu high) {
gen_protectflags();
if (high) gen_call_function((void *)&mem_writeb_checked,"%Ddr%Dh",addr,val);
else gen_call_function((void *)&mem_writeb_checked,"%Ddr%Dd",addr,val);
dyn_check_bool_exception_al();
}
static void dyn_read_word_release(DynReg * addr,DynReg * dst,bool dword) {
gen_protectflags();
if (dword) gen_call_function((void *)&mem_readd_checked,"%Ddr%Id",addr,&core_dyn.readdata);
else gen_call_function((void *)&mem_readw_checked,"%Ddr%Id",addr,&core_dyn.readdata);
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dst,dword?4:2);
}
static void dyn_write_word_release(DynReg * addr,DynReg * val,bool dword) {
gen_protectflags();
if (dword) gen_call_function((void *)&mem_writed_checked,"%Ddr%Dd",addr,val);
else gen_call_function((void *)&mem_writew_checked,"%Ddr%Dd",addr,val);
dyn_check_bool_exception_al();
}
#else
static void dyn_read_intro(DynReg * addr,bool release_addr=true) {
gen_protectflags();
if (addr->genreg) {
// addr already in a register
Bit8u reg_idx=(Bit8u)addr->genreg->index;
x86gen.regs[X86_REG_ECX]->Clear();
if (reg_idx!=1) {
cache_addw(0xc88b+(reg_idx<<8)); //Mov ecx,reg
}
x86gen.regs[X86_REG_EAX]->Clear();
if (release_addr) gen_releasereg(addr);
} else {
// addr still in memory, directly move into ecx
x86gen.regs[X86_REG_EAX]->Clear();
x86gen.regs[X86_REG_ECX]->Clear();
cache_addw(0x0d8b); //Mov ecx,[data]
cache_addd((Bit32u)addr->data);
}
x86gen.regs[X86_REG_EDX]->Clear();
cache_addw(0xc18b); // mov eax,ecx
}
bool mem_readb_checked_dcx86(PhysPt address) {
return get_tlb_readhandler(address)->readb_checked(address, (Bit8u*)(&core_dyn.readdata));
}
static void dyn_read_byte(DynReg * addr,DynReg * dst,Bitu high) {
dyn_read_intro(addr,false);
cache_addw(0xe8c1); // shr eax,0x0c
cache_addb(0x0c);
cache_addw(0x048b); // mov eax,paging.tlb.read[eax*TYPE Bit32u]
cache_addb(0x85);
cache_addd((Bit32u)(&paging.tlb.read[0]));
cache_addw(0xc085); // test eax,eax
Bit8u* je_loc=gen_create_branch(BR_Z);
cache_addw(0x048a); // mov al,[eax+ecx]
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(je_loc);
cache_addb(0x51); // push ecx
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_readb_checked_dcx86) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,4
cache_addb(0x04);
cache_addw(0x012c); // sub al,1
dyn_check_bool_exception_ne();
cache_addw(0x058a); //mov al,[]
cache_addd((Bit32u)(&core_dyn.readdata));
gen_fill_jump(jmp_loc);
x86gen.regs[X86_REG_EAX]->notusable=true;
GenReg * genreg=FindDynReg(dst);
x86gen.regs[X86_REG_EAX]->notusable=false;
cache_addw(0xc08a+(genreg->index<<11)+(high?0x2000:0));
dst->flags|=DYNFLG_CHANGED;
}
static void dyn_read_byte_release(DynReg * addr,DynReg * dst,Bitu high) {
dyn_read_intro(addr);
cache_addw(0xe8c1); // shr eax,0x0c
cache_addb(0x0c);
cache_addw(0x048b); // mov eax,paging.tlb.read[eax*TYPE Bit32u]
cache_addb(0x85);
cache_addd((Bit32u)(&paging.tlb.read[0]));
cache_addw(0xc085); // test eax,eax
Bit8u* je_loc=gen_create_branch(BR_Z);
cache_addw(0x048a); // mov al,[eax+ecx]
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(je_loc);
cache_addb(0x51); // push ecx
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_readb_checked_dcx86) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,4
cache_addb(0x04);
cache_addw(0x012c); // sub al,1
dyn_check_bool_exception_ne();
cache_addw(0x058a); //mov al,[]
cache_addd((Bit32u)(&core_dyn.readdata));
gen_fill_jump(jmp_loc);
x86gen.regs[X86_REG_EAX]->notusable=true;
GenReg * genreg=FindDynReg(dst);
x86gen.regs[X86_REG_EAX]->notusable=false;
cache_addw(0xc08a+(genreg->index<<11)+(high?0x2000:0));
dst->flags|=DYNFLG_CHANGED;
}
bool mem_readd_checked_dcx86(PhysPt address) {
if ((address & 0xfff)<0xffd) {
HostPt tlb_addr=get_tlb_read(address);
if (tlb_addr) {
core_dyn.readdata=host_readd(tlb_addr+address);
return false;
} else {
return get_tlb_readhandler(address)->readd_checked(address, &core_dyn.readdata);
}
} else return mem_unalignedreadd_checked(address, &core_dyn.readdata);
}
static void dyn_read_word(DynReg * addr,DynReg * dst,bool dword) {
if (dword) {
dyn_read_intro(addr,false);
cache_addw(0xe8d1); // shr eax,0x1
Bit8u* jb_loc1=gen_create_branch(BR_B);
cache_addw(0xe8d1); // shr eax,0x1
Bit8u* jb_loc2=gen_create_branch(BR_B);
cache_addw(0xe8c1); // shr eax,0x0a
cache_addb(0x0a);
cache_addw(0x048b); // mov eax,paging.tlb.read[eax*TYPE Bit32u]
cache_addb(0x85);
cache_addd((Bit32u)(&paging.tlb.read[0]));
cache_addw(0xc085); // test eax,eax
Bit8u* je_loc=gen_create_branch(BR_Z);
GenReg * genreg=FindDynReg(dst,true);
cache_addw(0x048b+(genreg->index <<(8+3))); // mov dest,[eax+ecx]
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(jb_loc1);
gen_fill_branch(jb_loc2);
gen_fill_branch(je_loc);
cache_addb(0x51); // push ecx
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_readd_checked_dcx86) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,4
cache_addb(0x04);
cache_addw(0x012c); // sub al,1
dyn_check_bool_exception_ne();
gen_mov_host(&core_dyn.readdata,dst,4);
dst->flags|=DYNFLG_CHANGED;
gen_fill_jump(jmp_loc);
} else {
gen_protectflags();
gen_call_function((void *)&mem_readw_checked,"%Dd%Id",addr,&core_dyn.readdata);
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dst,2);
}
}
static void dyn_read_word_release(DynReg * addr,DynReg * dst,bool dword) {
if (dword) {
dyn_read_intro(addr);
cache_addw(0xe8d1); // shr eax,0x1
Bit8u* jb_loc1=gen_create_branch(BR_B);
cache_addw(0xe8d1); // shr eax,0x1
Bit8u* jb_loc2=gen_create_branch(BR_B);
cache_addw(0xe8c1); // shr eax,0x0a
cache_addb(0x0a);
cache_addw(0x048b); // mov eax,paging.tlb.read[eax*TYPE Bit32u]
cache_addb(0x85);
cache_addd((Bit32u)(&paging.tlb.read[0]));
cache_addw(0xc085); // test eax,eax
Bit8u* je_loc=gen_create_branch(BR_Z);
GenReg * genreg=FindDynReg(dst,true);
cache_addw(0x048b+(genreg->index <<(8+3))); // mov dest,[eax+ecx]
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(jb_loc1);
gen_fill_branch(jb_loc2);
gen_fill_branch(je_loc);
cache_addb(0x51); // push ecx
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_readd_checked_dcx86) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,4
cache_addb(0x04);
cache_addw(0x012c); // sub al,1
dyn_check_bool_exception_ne();
gen_mov_host(&core_dyn.readdata,dst,4);
dst->flags|=DYNFLG_CHANGED;
gen_fill_jump(jmp_loc);
} else {
gen_protectflags();
gen_call_function((void *)&mem_readw_checked,"%Ddr%Id",addr,&core_dyn.readdata);
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dst,2);
}
}
static void dyn_write_intro(DynReg * addr,bool release_addr=true) {
gen_protectflags();
if (addr->genreg) {
// addr in a register
Bit8u reg_idx_addr=(Bit8u)addr->genreg->index;
x86gen.regs[X86_REG_EAX]->Clear();
x86gen.regs[X86_REG_EAX]->notusable=true;
x86gen.regs[X86_REG_ECX]->Clear();
x86gen.regs[X86_REG_ECX]->notusable=true;
if (reg_idx_addr) {
// addr!=eax
cache_addb(0x8b); //Mov eax,reg
cache_addb(0xc0+reg_idx_addr);
}
if (release_addr) gen_releasereg(addr);
} else {
// addr still in memory, directly move into eax
x86gen.regs[X86_REG_EAX]->Clear();
x86gen.regs[X86_REG_EAX]->notusable=true;
x86gen.regs[X86_REG_ECX]->Clear();
x86gen.regs[X86_REG_ECX]->notusable=true;
cache_addb(0xa1); //Mov eax,[data]
cache_addd((Bit32u)addr->data);
}
cache_addw(0xc88b); // mov ecx,eax
}
static void dyn_write_byte(DynReg * addr,DynReg * val,bool high) {
dyn_write_intro(addr,false);
GenReg * genreg=FindDynReg(val);
cache_addw(0xe9c1); // shr ecx,0x0c
cache_addb(0x0c);
cache_addw(0x0c8b); // mov ecx,paging.tlb.read[ecx*TYPE Bit32u]
cache_addb(0x8d);
cache_addd((Bit32u)(&paging.tlb.write[0]));
cache_addw(0xc985); // test ecx,ecx
Bit8u* je_loc=gen_create_branch(BR_Z);
cache_addw(0x0488+(genreg->index<<11)+(high?0x2000:0)); // mov [eax+ecx],reg
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(je_loc);
if (GCC_UNLIKELY(high)) cache_addw(0xe086+((genreg->index+(genreg->index<<3))<<8));
cache_addb(0x52); // push edx
cache_addb(0x50+genreg->index);
cache_addb(0x50); // push eax
if (GCC_UNLIKELY(high)) cache_addw(0xe086+((genreg->index+(genreg->index<<3))<<8));
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_writeb_checked) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,8
cache_addb(0x08);
cache_addw(0x012c); // sub al,1
cache_addb(0x5a); // pop edx
// Restore registers to be used again
x86gen.regs[X86_REG_EAX]->notusable=false;
x86gen.regs[X86_REG_ECX]->notusable=false;
dyn_check_bool_exception_ne();
gen_fill_jump(jmp_loc);
}
static void dyn_write_byte_release(DynReg * addr,DynReg * val,bool high) {
dyn_write_intro(addr);
GenReg * genreg=FindDynReg(val);
cache_addw(0xe9c1); // shr ecx,0x0c
cache_addb(0x0c);
cache_addw(0x0c8b); // mov ecx,paging.tlb.read[ecx*TYPE Bit32u]
cache_addb(0x8d);
cache_addd((Bit32u)(&paging.tlb.write[0]));
cache_addw(0xc985); // test ecx,ecx
Bit8u* je_loc=gen_create_branch(BR_Z);
cache_addw(0x0488+(genreg->index<<11)+(high?0x2000:0)); // mov [eax+ecx],reg
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(je_loc);
cache_addb(0x52); // push edx
if (GCC_UNLIKELY(high)) cache_addw(0xe086+((genreg->index+(genreg->index<<3))<<8));
cache_addb(0x50+genreg->index);
cache_addb(0x50); // push eax
if (GCC_UNLIKELY(high)) cache_addw(0xe086+((genreg->index+(genreg->index<<3))<<8));
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_writeb_checked) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,8
cache_addb(0x08);
cache_addw(0x012c); // sub al,1
cache_addb(0x5a); // pop edx
// Restore registers to be used again
x86gen.regs[X86_REG_EAX]->notusable=false;
x86gen.regs[X86_REG_ECX]->notusable=false;
dyn_check_bool_exception_ne();
gen_fill_jump(jmp_loc);
}
static void dyn_write_word(DynReg * addr,DynReg * val,bool dword) {
if (dword) {
dyn_write_intro(addr,false);
GenReg * genreg=FindDynReg(val);
cache_addw(0xe9d1); // shr ecx,0x1
Bit8u* jb_loc1=gen_create_branch(BR_B);
cache_addw(0xe9d1); // shr ecx,0x1
Bit8u* jb_loc2=gen_create_branch(BR_B);
cache_addw(0xe9c1); // shr ecx,0x0a
cache_addb(0x0a);
cache_addw(0x0c8b); // mov ecx,paging.tlb.read[ecx*TYPE Bit32u]
cache_addb(0x8d);
cache_addd((Bit32u)(&paging.tlb.write[0]));
cache_addw(0xc985); // test ecx,ecx
Bit8u* je_loc=gen_create_branch(BR_Z);
cache_addw(0x0489+(genreg->index <<(8+3))); // mov [eax+ecx],reg
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(jb_loc1);
gen_fill_branch(jb_loc2);
gen_fill_branch(je_loc);
cache_addb(0x52); // push edx
cache_addb(0x50+genreg->index);
cache_addb(0x50); // push eax
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_writed_checked) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,8
cache_addb(0x08);
cache_addw(0x012c); // sub al,1
cache_addb(0x5a); // pop edx
// Restore registers to be used again
x86gen.regs[X86_REG_EAX]->notusable=false;
x86gen.regs[X86_REG_ECX]->notusable=false;
dyn_check_bool_exception_ne();
gen_fill_jump(jmp_loc);
} else {
gen_protectflags();
gen_call_function((void *)&mem_writew_checked,"%Dd%Dd",addr,val);
dyn_check_bool_exception_al();
}
}
static void dyn_write_word_release(DynReg * addr,DynReg * val,bool dword) {
if (dword) {
dyn_write_intro(addr);
GenReg * genreg=FindDynReg(val);
cache_addw(0xe9d1); // shr ecx,0x1
Bit8u* jb_loc1=gen_create_branch(BR_B);
cache_addw(0xe9d1); // shr ecx,0x1
Bit8u* jb_loc2=gen_create_branch(BR_B);
cache_addw(0xe9c1); // shr ecx,0x0a
cache_addb(0x0a);
cache_addw(0x0c8b); // mov ecx,paging.tlb.read[ecx*TYPE Bit32u]
cache_addb(0x8d);
cache_addd((Bit32u)(&paging.tlb.write[0]));
cache_addw(0xc985); // test ecx,ecx
Bit8u* je_loc=gen_create_branch(BR_Z);
cache_addw(0x0489+(genreg->index <<(8+3))); // mov [eax+ecx],reg
cache_addb(0x08);
Bit8u* jmp_loc=gen_create_jump();
gen_fill_branch(jb_loc1);
gen_fill_branch(jb_loc2);
gen_fill_branch(je_loc);
cache_addb(0x52); // push edx
cache_addb(0x50+genreg->index);
cache_addb(0x50); // push eax
cache_addb(0xe8);
cache_addd(((Bit32u)&mem_writed_checked) - (Bit32u)cache.pos-4);
cache_addw(0xc483); // add esp,8
cache_addb(0x08);
cache_addw(0x012c); // sub al,1
cache_addb(0x5a); // pop edx
// Restore registers to be used again
x86gen.regs[X86_REG_EAX]->notusable=false;
x86gen.regs[X86_REG_ECX]->notusable=false;
dyn_check_bool_exception_ne();
gen_fill_jump(jmp_loc);
} else {
gen_protectflags();
gen_call_function((void *)&mem_writew_checked,"%Ddr%Dd",addr,val);
dyn_check_bool_exception_al();
}
}
#endif
static void dyn_push_unchecked(DynReg * dynreg) {
gen_protectflags();
gen_lea(DREG(STACK),DREG(ESP),0,0,decode.big_op?(-4):(-2));
gen_dop_word_var(DOP_AND,true,DREG(STACK),&cpu.stack.mask);
gen_dop_word_var(DOP_AND,true,DREG(ESP),&cpu.stack.notmask);
gen_dop_word(DOP_OR,true,DREG(ESP),DREG(STACK));
gen_dop_word(DOP_ADD,true,DREG(STACK),DREG(SS));
if (decode.big_op) {
gen_call_function((void *)&mem_writed,"%Drd%Dd",DREG(STACK),dynreg);
} else {
//Can just push the whole 32-bit word as operand
gen_call_function((void *)&mem_writew,"%Drd%Dd",DREG(STACK),dynreg);
}
}
static void dyn_push(DynReg * dynreg) {
gen_protectflags();
gen_lea(DREG(STACK),DREG(ESP),0,0,decode.big_op?(-4):(-2));
gen_dop_word(DOP_MOV,true,DREG(NEWESP),DREG(ESP));
gen_dop_word_var(DOP_AND,true,DREG(STACK),&cpu.stack.mask);
gen_dop_word_var(DOP_AND,true,DREG(NEWESP),&cpu.stack.notmask);
gen_dop_word(DOP_OR,true,DREG(NEWESP),DREG(STACK));
gen_dop_word(DOP_ADD,true,DREG(STACK),DREG(SS));
if (decode.big_op) {
gen_call_function((void *)&mem_writed_checked,"%Drd%Dd",DREG(STACK),dynreg);
} else {
//Can just push the whole 32-bit word as operand
gen_call_function((void *)&mem_writew_checked,"%Drd%Dd",DREG(STACK),dynreg);
}
dyn_check_bool_exception_al();
/* everything was ok, change register now */
gen_dop_word(DOP_MOV,true,DREG(ESP),DREG(NEWESP));
gen_releasereg(DREG(NEWESP));
}
static void dyn_pop(DynReg * dynreg,bool checked=true) {
gen_protectflags();
gen_dop_word(DOP_MOV,true,DREG(STACK),DREG(ESP));
gen_dop_word_var(DOP_AND,true,DREG(STACK),&cpu.stack.mask);
gen_dop_word(DOP_ADD,true,DREG(STACK),DREG(SS));
if (checked) {
if (decode.big_op) {
gen_call_function((void *)&mem_readd_checked,"%Drd%Id",DREG(STACK),&core_dyn.readdata);
} else {
gen_call_function((void *)&mem_readw_checked,"%Drd%Id",DREG(STACK),&core_dyn.readdata);
}
dyn_check_bool_exception_al();
gen_mov_host(&core_dyn.readdata,dynreg,decode.big_op?4:2);
} else {
if (decode.big_op) {
gen_call_function((void *)&mem_readd,"%Rd%Drd",dynreg,DREG(STACK));
} else {
gen_call_function((void *)&mem_readw,"%Rw%Drd",dynreg,DREG(STACK));
}
}
if (dynreg!=DREG(ESP)) {
gen_lea(DREG(STACK),DREG(ESP),0,0,decode.big_op?4:2);
gen_dop_word_var(DOP_AND,true,DREG(STACK),&cpu.stack.mask);
gen_dop_word_var(DOP_AND,true,DREG(ESP),&cpu.stack.notmask);
gen_dop_word(DOP_OR,true,DREG(ESP),DREG(STACK));
}
}
static INLINE void dyn_get_modrm(void) {
decode.modrm.val=decode_fetchb();
decode.modrm.mod=(decode.modrm.val >> 6) & 3;
decode.modrm.reg=(decode.modrm.val >> 3) & 7;
decode.modrm.rm=(decode.modrm.val & 7);
}
static void dyn_fill_ea(bool addseg=true, DynReg * reg_ea=DREG(EA)) {
DynReg * segbase;
if (!decode.big_addr) {
Bits imm;
switch (decode.modrm.mod) {
case 0:imm=0;break;
case 1:imm=(Bit8s)decode_fetchb();break;
case 2:imm=(Bit16s)decode_fetchw();break;
}
DynReg * extend_src=reg_ea;
switch (decode.modrm.rm) {
case 0:/* BX+SI */
gen_lea(reg_ea,DREG(EBX),DREG(ESI),0,imm);
segbase=DREG(DS);
break;
case 1:/* BX+DI */
gen_lea(reg_ea,DREG(EBX),DREG(EDI),0,imm);
segbase=DREG(DS);
break;
case 2:/* BP+SI */
gen_lea(reg_ea,DREG(EBP),DREG(ESI),0,imm);
segbase=DREG(SS);
break;
case 3:/* BP+DI */
gen_lea(reg_ea,DREG(EBP),DREG(EDI),0,imm);
segbase=DREG(SS);
break;
case 4:/* SI */
if (imm) gen_lea(reg_ea,DREG(ESI),0,0,imm);
else extend_src=DREG(ESI);
segbase=DREG(DS);
break;
case 5:/* DI */
if (imm) gen_lea(reg_ea,DREG(EDI),0,0,imm);
else extend_src=DREG(EDI);
segbase=DREG(DS);
break;
case 6:/* imm/BP */
if (!decode.modrm.mod) {
imm=decode_fetchw();
gen_dop_word_imm(DOP_MOV,true,reg_ea,imm);
segbase=DREG(DS);
goto skip_extend_word;
} else {
gen_lea(reg_ea,DREG(EBP),0,0,imm);
segbase=DREG(SS);
}
break;
case 7: /* BX */
if (imm) gen_lea(reg_ea,DREG(EBX),0,0,imm);
else extend_src=DREG(EBX);
segbase=DREG(DS);
break;
}
gen_extend_word(false,reg_ea,extend_src);
skip_extend_word:
if (addseg) {
gen_lea(reg_ea,reg_ea,decode.segprefix ? decode.segprefix : segbase,0,0);
}
} else {
Bits imm=0;
DynReg * base=0;DynReg * scaled=0;Bitu scale=0;
switch (decode.modrm.rm) {
case 0:base=DREG(EAX);segbase=DREG(DS);break;
case 1:base=DREG(ECX);segbase=DREG(DS);break;
case 2:base=DREG(EDX);segbase=DREG(DS);break;
case 3:base=DREG(EBX);segbase=DREG(DS);break;
case 4: /* SIB */
{
Bitu sib=decode_fetchb();
static DynReg * scaledtable[8]={
DREG(EAX),DREG(ECX),DREG(EDX),DREG(EBX),
0,DREG(EBP),DREG(ESI),DREG(EDI),
};
scaled=scaledtable[(sib >> 3) &7];
scale=(sib >> 6);
switch (sib & 7) {
case 0:base=DREG(EAX);segbase=DREG(DS);break;
case 1:base=DREG(ECX);segbase=DREG(DS);break;
case 2:base=DREG(EDX);segbase=DREG(DS);break;
case 3:base=DREG(EBX);segbase=DREG(DS);break;
case 4:base=DREG(ESP);segbase=DREG(SS);break;
case 5:
if (decode.modrm.mod) {
base=DREG(EBP);segbase=DREG(SS);
} else {
segbase=DREG(DS);
Bitu val;
if (decode_fetchd_imm(val)) {
gen_mov_host((void*)val,DREG(EA),4);
if (!addseg) {
gen_lea(reg_ea,DREG(EA),scaled,scale,0);
} else {
DynReg** seg = decode.segprefix ? &decode.segprefix : &segbase;
gen_lea(DREG(EA),DREG(EA),scaled,scale,0);
gen_lea(reg_ea,DREG(EA),*seg,0,0);
}
return;
}
imm=(Bit32s)val;
}
break;
case 6:base=DREG(ESI);segbase=DREG(DS);break;
case 7:base=DREG(EDI);segbase=DREG(DS);break;
}
}
break; /* SIB Break */
case 5:
if (decode.modrm.mod) {
base=DREG(EBP);segbase=DREG(SS);
} else {
imm=(Bit32s)decode_fetchd();segbase=DREG(DS);
}
break;
case 6:base=DREG(ESI);segbase=DREG(DS);break;
case 7:base=DREG(EDI);segbase=DREG(DS);break;
}
switch (decode.modrm.mod) {
case 1:imm=(Bit8s)decode_fetchb();break;
case 2: {
Bitu val;
if (decode_fetchd_imm(val)) {
gen_mov_host((void*)val,DREG(EA),4);
if (!addseg) {
gen_lea(DREG(EA),DREG(EA),scaled,scale,0);
gen_lea(reg_ea,DREG(EA),base,0,0);
} else {
DynReg** seg = decode.segprefix ? &decode.segprefix : &segbase;
if (!base) {
gen_lea(DREG(EA),DREG(EA),scaled,scale,0);
gen_lea(reg_ea,DREG(EA),*seg,0,0);
} else if (!scaled) {
gen_lea(DREG(EA),DREG(EA),*seg,0,0);
gen_lea(reg_ea,DREG(EA),base,0,0);
} else {
gen_lea(DREG(EA),DREG(EA),scaled,scale,0);
gen_lea(DREG(EA),DREG(EA),base,0,0);
gen_lea(reg_ea,DREG(EA),decode.segprefix ? decode.segprefix : segbase,0,0);
}
}
return;
}
imm=(Bit32s)val;
break;
}
}
if (!addseg) {
gen_lea(reg_ea,base,scaled,scale,imm);
} else {
DynReg** seg = decode.segprefix ? &decode.segprefix : &segbase;
if (!base) gen_lea(reg_ea,*seg,scaled,scale,imm);
else if (!scaled) gen_lea(reg_ea,base,*seg,0,imm);
else {
gen_lea(DREG(EA),base,scaled,scale,imm);
gen_lea(reg_ea,DREG(EA),decode.segprefix ? decode.segprefix : segbase,0,0);
}
}
}
}
static void dyn_dop_word_imm(DualOps op,bool dword,DynReg * dr1) {
Bitu val;
if (dword) {
if (decode_fetchd_imm(val)) {
gen_dop_word_imm_mem(op,true,dr1,(void*)val);
return;
}
} else {
if (decode_fetchw_imm(val)) {
gen_dop_word_imm_mem(op,false,dr1,(void*)val);
return;
}
}
gen_dop_word_imm(op,dword,dr1,val);
}
static void dyn_dop_byte_imm(DualOps op,DynReg * dr1,Bit8u di1) {
Bitu val;
if (decode_fetchb_imm(val)) {
gen_dop_byte_imm_mem(op,dr1,di1,(void*)val);
} else {
gen_dop_byte_imm(op,dr1,di1,(Bit8u)val);
}
}
#include "helpers.h"
#include "string.h"
static void dyn_dop_ebgb(DualOps op) {
dyn_get_modrm();DynReg * rm_reg=&DynRegs[decode.modrm.reg&3];
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((op<=DOP_TEST) && (op!=DOP_ADC && op!=DOP_SBB)) set_skipflags(true);
dyn_read_byte(DREG(EA),DREG(TMPB),false);
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else set_skipflags(false);
}
gen_dop_byte(op,DREG(TMPB),0,rm_reg,decode.modrm.reg&4);
if (op!=DOP_CMP) dyn_write_byte_release(DREG(EA),DREG(TMPB),false);
else gen_releasereg(DREG(EA));
gen_releasereg(DREG(TMPB));
} else {
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else gen_discardflags();
}
gen_dop_byte(op,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4,rm_reg,decode.modrm.reg&4);
}
}
static void dyn_dop_gbeb(DualOps op) {
dyn_get_modrm();DynReg * rm_reg=&DynRegs[decode.modrm.reg&3];
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((op<=DOP_TEST) && (op!=DOP_ADC && op!=DOP_SBB)) set_skipflags(true);
dyn_read_byte_release(DREG(EA),DREG(TMPB),false);
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else set_skipflags(false);
}
gen_dop_byte(op,rm_reg,decode.modrm.reg&4,DREG(TMPB),0);
gen_releasereg(DREG(TMPB));
} else {
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else gen_discardflags();
}
gen_dop_byte(op,rm_reg,decode.modrm.reg&4,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4);
}
}
static void dyn_mov_ebib(void) {
dyn_get_modrm();
if (decode.modrm.mod<3) {
dyn_fill_ea();
gen_call_write(DREG(EA),decode_fetchb(),1);
dyn_check_bool_exception_al();
} else {
gen_dop_byte_imm(DOP_MOV,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4,decode_fetchb());
}
}
static void dyn_mov_ebgb(void) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg&3];Bitu rm_regi=decode.modrm.reg&4;
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_write_byte_release(DREG(EA),rm_reg,rm_regi==4);
} else {
gen_dop_byte(DOP_MOV,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4,rm_reg,rm_regi);
}
}
static void dyn_mov_gbeb(void) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg&3];Bitu rm_regi=decode.modrm.reg&4;
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_read_byte_release(DREG(EA),rm_reg,rm_regi);
} else {
gen_dop_byte(DOP_MOV,rm_reg,rm_regi,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4);
}
}
static void dyn_dop_evgv(DualOps op) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((op<=DOP_TEST) && (op!=DOP_ADC && op!=DOP_SBB)) set_skipflags(true);
dyn_read_word(DREG(EA),DREG(TMPW),decode.big_op);
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else set_skipflags(false);
}
gen_dop_word(op,decode.big_op,DREG(TMPW),rm_reg);
if (op!=DOP_CMP) dyn_write_word_release(DREG(EA),DREG(TMPW),decode.big_op);
else gen_releasereg(DREG(EA));
gen_releasereg(DREG(TMPW));
} else {
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else gen_discardflags();
}
gen_dop_word(op,decode.big_op,&DynRegs[decode.modrm.rm],rm_reg);
}
}
static void dyn_imul_gvev(Bitu immsize) {
dyn_get_modrm();DynReg * src;
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();dyn_read_word_release(DREG(EA),DREG(TMPW),decode.big_op);
src=DREG(TMPW);
} else {
src=&DynRegs[decode.modrm.rm];
}
gen_needflags();
switch (immsize) {
case 0:gen_imul_word(decode.big_op,rm_reg,src);break;
case 1:gen_imul_word_imm(decode.big_op,rm_reg,src,(Bit8s)decode_fetchb());break;
case 2:gen_imul_word_imm(decode.big_op,rm_reg,src,(Bit16s)decode_fetchw());break;
case 4:gen_imul_word_imm(decode.big_op,rm_reg,src,(Bit32s)decode_fetchd());break;
}
gen_releasereg(DREG(TMPW));
}
static void dyn_dop_gvev(DualOps op) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((op<=DOP_TEST) && (op!=DOP_ADC && op!=DOP_SBB)) set_skipflags(true);
dyn_read_word_release(DREG(EA),DREG(TMPW),decode.big_op);
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else set_skipflags(false);
}
gen_dop_word(op,decode.big_op,rm_reg,DREG(TMPW));
gen_releasereg(DREG(TMPW));
} else {
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else gen_discardflags();
}
gen_dop_word(op,decode.big_op,rm_reg,&DynRegs[decode.modrm.rm]);
}
}
static void dyn_mov_evgv(void) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_write_word_release(DREG(EA),rm_reg,decode.big_op);
} else {
gen_dop_word(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.rm],rm_reg);
}
}
static void dyn_mov_gvev(void) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_read_word_release(DREG(EA),rm_reg,decode.big_op);
} else {
gen_dop_word(DOP_MOV,decode.big_op,rm_reg,&DynRegs[decode.modrm.rm]);
}
}
static void dyn_mov_eviv(void) {
dyn_get_modrm();
if (decode.modrm.mod<3) {
dyn_fill_ea();
gen_call_write(DREG(EA),decode.big_op ? decode_fetchd() : decode_fetchw(),decode.big_op?4:2);
dyn_check_bool_exception_al();
} else {
gen_dop_word_imm(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.rm],decode.big_op ? decode_fetchd() : decode_fetchw());
}
}
static void dyn_mov_ev_gb(bool sign) {
dyn_get_modrm();DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_read_byte_release(DREG(EA),DREG(TMPB),false);
gen_extend_byte(sign,decode.big_op,rm_reg,DREG(TMPB),0);
gen_releasereg(DREG(TMPB));
} else {
gen_extend_byte(sign,decode.big_op,rm_reg,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4);
}
}
static void dyn_mov_ev_gw(bool sign) {
if (!decode.big_op) {
dyn_mov_gvev();
return;
}
dyn_get_modrm();DynReg * rm_reg=&DynRegs[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_read_word_release(DREG(EA),DREG(TMPW),false);
gen_extend_word(sign,rm_reg,DREG(TMPW));
gen_releasereg(DREG(TMPW));
} else {
gen_extend_word(sign,rm_reg,&DynRegs[decode.modrm.rm]);
}
}
static void dyn_cmpxchg_evgv(void) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
gen_protectflags();
if (decode.modrm.mod<3) {
gen_releasereg(DREG(EAX));
gen_releasereg(DREG(TMPB));
gen_releasereg(rm_reg);
dyn_fill_ea();
dyn_read_word(DREG(EA),DREG(TMPB),decode.big_op);
gen_dop_word(DOP_CMP,decode.big_op,DREG(EAX),DREG(TMPB));
Bit8u * branch=gen_create_branch(BR_NZ);
// eax==mem -> mem:=rm_reg
dyn_write_word_release(DREG(EA),rm_reg,decode.big_op);
gen_setzeroflag();
gen_releasereg(DREG(EAX));
gen_releasereg(DREG(TMPB));
gen_releasereg(rm_reg);
Bit8u * jump=gen_create_jump();
gen_fill_branch(branch);
// eax!=mem -> eax:=mem
dyn_write_word_release(DREG(EA),DREG(TMPB),decode.big_op); // cmpxchg always issues write
gen_dop_word(DOP_MOV,decode.big_op,DREG(EAX),DREG(TMPB));
gen_clearzeroflag();
gen_releasereg(DREG(EAX));
gen_releasereg(DREG(TMPB));
gen_releasereg(rm_reg);
gen_fill_jump(jump);
} else {
gen_releasereg(DREG(EAX));
gen_releasereg(&DynRegs[decode.modrm.rm]);
gen_releasereg(rm_reg);
gen_dop_word(DOP_CMP,decode.big_op,DREG(EAX),&DynRegs[decode.modrm.rm]);
Bit8u * branch=gen_create_branch(BR_NZ);
// eax==rm -> rm:=rm_reg
gen_dop_word(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.rm],rm_reg);
gen_setzeroflag();
gen_releasereg(DREG(EAX));
gen_releasereg(&DynRegs[decode.modrm.rm]);
gen_releasereg(rm_reg);
Bit8u * jump=gen_create_jump();
gen_fill_branch(branch);
// eax!=rm -> eax:=rm
gen_dop_word(DOP_MOV,decode.big_op,DREG(EAX),&DynRegs[decode.modrm.rm]);
gen_clearzeroflag();
gen_releasereg(DREG(EAX));
gen_releasereg(&DynRegs[decode.modrm.rm]);
gen_releasereg(rm_reg);
gen_fill_jump(jump);
}
}
static void dyn_dshift_ev_gv(bool left,bool immediate) {
dyn_get_modrm();
DynReg * rm_reg=&DynRegs[decode.modrm.reg];
DynReg * ea_reg;
if (decode.modrm.mod<3) {
dyn_fill_ea();ea_reg=DREG(TMPW);
dyn_read_word(DREG(EA),DREG(TMPW),decode.big_op);
} else ea_reg=&DynRegs[decode.modrm.rm];
gen_needflags();
if (immediate) gen_dshift_imm(decode.big_op,left,ea_reg,rm_reg,decode_fetchb());
else gen_dshift_cl(decode.big_op,left,ea_reg,rm_reg,DREG(ECX));
if (decode.modrm.mod<3) {
dyn_write_word_release(DREG(EA),DREG(TMPW),decode.big_op);
gen_releasereg(DREG(TMPW));
}
}
static DualOps grp1_table[8]={DOP_ADD,DOP_OR,DOP_ADC,DOP_SBB,DOP_AND,DOP_SUB,DOP_XOR,DOP_CMP};
static void dyn_grp1_eb_ib(void) {
dyn_get_modrm();
DualOps op=grp1_table[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((op<=DOP_TEST) && (op!=DOP_ADC && op!=DOP_SBB)) set_skipflags(true);
dyn_read_byte(DREG(EA),DREG(TMPB),false);
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else set_skipflags(false);
}
gen_dop_byte_imm(op,DREG(TMPB),0,decode_fetchb());
if (op!=DOP_CMP) dyn_write_byte_release(DREG(EA),DREG(TMPB),false);
else gen_releasereg(DREG(EA));
gen_releasereg(DREG(TMPB));
} else {
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else gen_discardflags();
}
dyn_dop_byte_imm(op,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4);
}
}
static void dyn_grp1_ev_ivx(bool withbyte) {
dyn_get_modrm();
DualOps op=grp1_table[decode.modrm.reg];
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((op<=DOP_TEST) && (op!=DOP_ADC && op!=DOP_SBB)) set_skipflags(true);
dyn_read_word(DREG(EA),DREG(TMPW),decode.big_op);
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else set_skipflags(false);
}
if (!withbyte) {
dyn_dop_word_imm(op,decode.big_op,DREG(TMPW));
} else {
gen_dop_word_imm(op,decode.big_op,DREG(TMPW),(Bit8s)decode_fetchb());
}
if (op!=DOP_CMP) dyn_write_word_release(DREG(EA),DREG(TMPW),decode.big_op);
else gen_releasereg(DREG(EA));
gen_releasereg(DREG(TMPW));
} else {
if (op<=DOP_TEST) {
if (op==DOP_ADC || op==DOP_SBB) gen_needcarry();
else gen_discardflags();
}
if (!withbyte) {
dyn_dop_word_imm(op,decode.big_op,&DynRegs[decode.modrm.rm]);
} else {
gen_dop_word_imm(op,decode.big_op,&DynRegs[decode.modrm.rm],(Bit8s)decode_fetchb());
}
}
}
enum grp2_types {
grp2_1,grp2_imm,grp2_cl,
};
static void dyn_grp2_eb(grp2_types type) {
dyn_get_modrm();DynReg * src;Bit8u src_i;
if (decode.modrm.mod<3) {
dyn_fill_ea();dyn_read_byte(DREG(EA),DREG(TMPB),false);
src=DREG(TMPB);
src_i=0;
} else {
src=&DynRegs[decode.modrm.rm&3];
src_i=decode.modrm.rm&4;
}
switch (type) {
case grp2_1:
/* rotates (first 4 ops) alter cf/of only; shifts (last 4 ops) alter all flags */
if (decode.modrm.reg < 4) gen_needflags();
else gen_discardflags();
gen_shift_byte_imm(decode.modrm.reg,src,src_i,1);
break;
case grp2_imm: {
Bit8u imm=decode_fetchb();
if (imm) {
/* rotates (first 4 ops) alter cf/of only; shifts (last 4 ops) alter all flags */
if (decode.modrm.reg < 4) gen_needflags();
else gen_discardflags();
gen_shift_byte_imm(decode.modrm.reg,src,src_i,imm);
} else return;
}
break;
case grp2_cl:
gen_needflags(); /* flags must not be changed on ecx==0 */
gen_shift_byte_cl (decode.modrm.reg,src,src_i,DREG(ECX));
break;
}
if (decode.modrm.mod<3) {
dyn_write_byte_release(DREG(EA),src,false);
gen_releasereg(src);
}
}
static void dyn_grp2_ev(grp2_types type) {
dyn_get_modrm();DynReg * src;
if (decode.modrm.mod<3) {
dyn_fill_ea();dyn_read_word(DREG(EA),DREG(TMPW),decode.big_op);
src=DREG(TMPW);
} else {
src=&DynRegs[decode.modrm.rm];
}
switch (type) {
case grp2_1:
/* rotates (first 4 ops) alter cf/of only; shifts (last 4 ops) alter all flags */
if (decode.modrm.reg < 4) gen_needflags();
else gen_discardflags();
gen_shift_word_imm(decode.modrm.reg,decode.big_op,src,1);
break;
case grp2_imm: {
Bitu val;
if (decode_fetchb_imm(val)) {
if (decode.modrm.reg < 4) gen_needflags();
else gen_discardflags();
gen_load_host((void*)val,DREG(TMPB),1);
gen_shift_word_cl(decode.modrm.reg,decode.big_op,src,DREG(TMPB));
gen_releasereg(DREG(TMPB));
break;
}
Bit8u imm=(Bit8u)val;
if (imm) {
/* rotates (first 4 ops) alter cf/of only; shifts (last 4 ops) alter all flags */
if (decode.modrm.reg < 4) gen_needflags();
else gen_discardflags();
gen_shift_word_imm(decode.modrm.reg,decode.big_op,src,imm);
} else return;
}
break;
case grp2_cl:
gen_needflags(); /* flags must not be changed on ecx==0 */
gen_shift_word_cl (decode.modrm.reg,decode.big_op,src,DREG(ECX));
break;
}
if (decode.modrm.mod<3) {
dyn_write_word_release(DREG(EA),src,decode.big_op);
gen_releasereg(src);
}
}
static void dyn_grp3_eb(void) {
dyn_get_modrm();DynReg * src;Bit8u src_i;
if (decode.modrm.mod<3) {
dyn_fill_ea();
if ((decode.modrm.reg==0) || (decode.modrm.reg==3)) set_skipflags(true);
dyn_read_byte(DREG(EA),DREG(TMPB),false);
src=DREG(TMPB);src_i=0;
} else {
src=&DynRegs[decode.modrm.rm&3];
src_i=decode.modrm.rm&4;
}
switch (decode.modrm.reg) {
case 0x0: /* test eb,ib */
set_skipflags(false);gen_dop_byte_imm(DOP_TEST,src,src_i,decode_fetchb());
goto skipsave;
case 0x2: /* NOT Eb */
gen_sop_byte(SOP_NOT,src,src_i);
break;
case 0x3: /* NEG Eb */
set_skipflags(false);gen_sop_byte(SOP_NEG,src,src_i);
break;
case 0x4: /* mul Eb */
gen_needflags();gen_mul_byte(false,DREG(EAX),src,src_i);
goto skipsave;
case 0x5: /* imul Eb */
gen_needflags();gen_mul_byte(true,DREG(EAX),src,src_i);
goto skipsave;
case 0x6: /* div Eb */
case 0x7: /* idiv Eb */
/* EAX could be used, so precache it */
if (decode.modrm.mod==3)
gen_dop_byte(DOP_MOV,DREG(TMPB),0,&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4);
gen_releasereg(DREG(EAX));
gen_call_function((decode.modrm.reg==6) ? (void *)&dyn_helper_divb : (void *)&dyn_helper_idivb,
"%Rd%Dd",DREG(TMPB),DREG(TMPB));
dyn_check_bool_exception(DREG(TMPB));
goto skipsave;
}
/* Save the result if memory op */
if (decode.modrm.mod<3) dyn_write_byte_release(DREG(EA),src,false);
skipsave:
gen_releasereg(DREG(TMPB));gen_releasereg(DREG(EA));
}
static void dyn_grp3_ev(void) {
dyn_get_modrm();DynReg * src;
if (decode.modrm.mod<3) {
dyn_fill_ea();src=DREG(TMPW);
if ((decode.modrm.reg==0) || (decode.modrm.reg==3)) set_skipflags(true);
dyn_read_word(DREG(EA),DREG(TMPW),decode.big_op);
} else src=&DynRegs[decode.modrm.rm];
switch (decode.modrm.reg) {
case 0x0: /* test ev,iv */
set_skipflags(false);gen_dop_word_imm(DOP_TEST,decode.big_op,src,decode.big_op ? decode_fetchd() : decode_fetchw());
goto skipsave;
case 0x2: /* NOT Ev */
gen_sop_word(SOP_NOT,decode.big_op,src);
break;
case 0x3: /* NEG Eb */
set_skipflags(false);gen_sop_word(SOP_NEG,decode.big_op,src);
break;
case 0x4: /* mul Eb */
gen_needflags();gen_mul_word(false,DREG(EAX),DREG(EDX),decode.big_op,src);
goto skipsave;
case 0x5: /* imul Eb */
gen_needflags();gen_mul_word(true,DREG(EAX),DREG(EDX),decode.big_op,src);
goto skipsave;
case 0x6: /* div Eb */
case 0x7: /* idiv Eb */
/* EAX could be used, so precache it */
if (decode.modrm.mod==3)
gen_dop_word(DOP_MOV,decode.big_op,DREG(TMPW),&DynRegs[decode.modrm.rm]);
gen_releasereg(DREG(EAX));gen_releasereg(DREG(EDX));
void * func=(decode.modrm.reg==6) ?
(decode.big_op ? (void *)&dyn_helper_divd : (void *)&dyn_helper_divw) :
(decode.big_op ? (void *)&dyn_helper_idivd : (void *)&dyn_helper_idivw);
gen_call_function(func,"%Rd%Dd",DREG(TMPB),DREG(TMPW));
dyn_check_bool_exception(DREG(TMPB));
gen_releasereg(DREG(TMPB));
goto skipsave;
}
/* Save the result if memory op */
if (decode.modrm.mod<3) dyn_write_word_release(DREG(EA),src,decode.big_op);
skipsave:
gen_releasereg(DREG(TMPW));gen_releasereg(DREG(EA));
}
static void dyn_mov_ev_seg(void) {
dyn_get_modrm();
gen_load_host(&Segs.val[decode.modrm.reg],DREG(TMPW),2);
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_write_word_release(DREG(EA),DREG(TMPW),false);
} else {
gen_dop_word(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.rm],DREG(TMPW));
}
gen_releasereg(DREG(TMPW));
}
static void dyn_load_seg(SegNames seg,DynReg * src) {
gen_call_function((void *)&CPU_SetSegGeneral,"%Rd%Id%Drw",DREG(TMPB),seg,src);
dyn_check_bool_exception(DREG(TMPB));
gen_releasereg(DREG(TMPB));
gen_releasereg(&DynRegs[G_ES+seg]);
}
static void dyn_load_seg_off_ea(SegNames seg) {
if (decode.modrm.mod<3) {
dyn_fill_ea();
gen_lea(DREG(TMPB),DREG(EA),0,0,decode.big_op ? 4:2);
dyn_read_word(DREG(TMPB),DREG(TMPB),false);
dyn_read_word_release(DREG(EA),DREG(TMPW),decode.big_op);
dyn_load_seg(seg,DREG(TMPB));gen_releasereg(DREG(TMPB));
gen_dop_word(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.reg],DREG(TMPW));
} else {
IllegalOption("dyn_load_seg_off_ea");
}
}
static void dyn_mov_seg_ev(void) {
dyn_get_modrm();
SegNames seg=(SegNames)decode.modrm.reg;
if (GCC_UNLIKELY(seg==cs)) IllegalOption("dyn_mov_seg_ev");
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_read_word(DREG(EA),DREG(EA),false);
dyn_load_seg(seg,DREG(EA));
gen_releasereg(DREG(EA));
} else {
dyn_load_seg(seg,&DynRegs[decode.modrm.rm]);
}
}
static void dyn_push_seg(SegNames seg) {
gen_load_host(&Segs.val[seg],DREG(TMPW),2);
dyn_push(DREG(TMPW));
gen_releasereg(DREG(TMPW));
}
static void dyn_pop_seg(SegNames seg) {
gen_releasereg(DREG(ESP));
gen_call_function((void *)&CPU_PopSeg,"%Rd%Id%Id",DREG(TMPB),seg,decode.big_op);
dyn_check_bool_exception(DREG(TMPB));
gen_releasereg(DREG(TMPB));
gen_releasereg(&DynRegs[G_ES+seg]);
gen_releasereg(DREG(ESP));
}
static void dyn_pop_ev(void) {
dyn_pop(DREG(TMPW));
dyn_get_modrm();
if (decode.modrm.mod<3) {
dyn_fill_ea();
// dyn_write_word_release(DREG(EA),DREG(TMPW),decode.big_op);
if (decode.big_op) gen_call_function((void *)&mem_writed_inline,"%Ddr%Dd",DREG(EA),DREG(TMPW));
else gen_call_function((void *)&mem_writew_inline,"%Ddr%Dd",DREG(EA),DREG(TMPW));
} else {
gen_dop_word(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.rm],DREG(TMPW));
}
gen_releasereg(DREG(TMPW));
}
static void dyn_enter(void) {
gen_releasereg(DREG(ESP));
gen_releasereg(DREG(EBP));
Bitu bytes=decode_fetchw();
Bitu level=decode_fetchb();
gen_call_function((void *)&CPU_ENTER,"%Id%Id%Id",decode.big_op,bytes,level);
}
static void dyn_leave(void) {
gen_protectflags();
gen_dop_word_var(DOP_MOV,true,DREG(TMPW),&cpu.stack.mask);
gen_sop_word(SOP_NOT,true,DREG(TMPW));
gen_dop_word(DOP_AND,true,DREG(ESP),DREG(TMPW));
gen_dop_word(DOP_MOV,true,DREG(TMPW),DREG(EBP));
gen_dop_word_var(DOP_AND,true,DREG(TMPW),&cpu.stack.mask);
gen_dop_word(DOP_OR,true,DREG(ESP),DREG(TMPW));
dyn_pop(DREG(EBP),false);
gen_releasereg(DREG(TMPW));
}
static void dyn_segprefix(SegNames seg) {
// if (GCC_UNLIKELY((Bitu)(decode.segprefix))) IllegalOption("dyn_segprefix");
decode.segprefix=&DynRegs[G_ES+seg];
}
static void dyn_closeblock(void) {
//Shouldn't create empty block normally but let's do it like this
gen_protectflags();
dyn_fill_blocks();
cache_closeblock();
}
static void dyn_normal_exit(BlockReturn code) {
gen_protectflags();
dyn_reduce_cycles();
dyn_set_eip_last();
dyn_save_critical_regs();
gen_return(code);
dyn_closeblock();
}
static void dyn_exit_link(Bits eip_change) {
gen_protectflags();
gen_dop_word_imm(DOP_ADD,decode.big_op,DREG(EIP),(decode.code-decode.code_start)+eip_change);
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_jmp_ptr(&decode.block->link[0].to,offsetof(CacheBlock,cache.start));
dyn_closeblock();
}
static void dyn_branched_exit(BranchTypes btype,Bit32s eip_add) {
Bitu eip_base=decode.code-decode.code_start;
gen_needflags();
gen_protectflags();
dyn_save_noncritical_regs();
gen_releasereg(DREG(FLAGS));
gen_releasereg(DREG(EIP));
gen_preloadreg(DREG(CYCLES));
gen_preloadreg(DREG(EIP));
DynReg save_cycles,save_eip;
dyn_saveregister(DREG(CYCLES),&save_cycles);
dyn_saveregister(DREG(EIP),&save_eip);
Bit8u * data=gen_create_branch(btype);
/* Branch not taken */
dyn_reduce_cycles();
gen_dop_word_imm(DOP_ADD,decode.big_op,DREG(EIP),eip_base);
gen_releasereg(DREG(CYCLES));
gen_releasereg(DREG(EIP));
gen_jmp_ptr(&decode.block->link[0].to,offsetof(CacheBlock,cache.start));
gen_fill_branch(data);
/* Branch taken */
dyn_restoreregister(&save_cycles,DREG(CYCLES));
dyn_restoreregister(&save_eip,DREG(EIP));
dyn_reduce_cycles();
gen_dop_word_imm(DOP_ADD,decode.big_op,DREG(EIP),eip_base+eip_add);
gen_releasereg(DREG(CYCLES));
gen_releasereg(DREG(EIP));
gen_jmp_ptr(&decode.block->link[1].to,offsetof(CacheBlock,cache.start));
dyn_closeblock();
}
enum LoopTypes {
LOOP_NONE,LOOP_NE,LOOP_E,LOOP_JCXZ
};
static void dyn_loop(LoopTypes type) {
dyn_reduce_cycles();
Bits eip_add=(Bit8s)decode_fetchb();
Bitu eip_base=decode.code-decode.code_start;
Bit8u * branch1=0;Bit8u * branch2=0;
dyn_save_critical_regs();
switch (type) {
case LOOP_E:
gen_needflags();
branch1=gen_create_branch(BR_NZ);
break;
case LOOP_NE:
gen_needflags();
branch1=gen_create_branch(BR_Z);
break;
}
gen_protectflags();
switch (type) {
case LOOP_E:
case LOOP_NE:
case LOOP_NONE:
gen_sop_word(SOP_DEC,decode.big_addr,DREG(ECX));
gen_releasereg(DREG(ECX));
branch2=gen_create_branch(BR_Z);
break;
case LOOP_JCXZ:
gen_dop_word(DOP_OR,decode.big_addr,DREG(ECX),DREG(ECX));
gen_releasereg(DREG(ECX));
branch2=gen_create_branch(BR_NZ);
break;
}
gen_lea(DREG(EIP),DREG(EIP),0,0,eip_base+eip_add);
gen_releasereg(DREG(EIP));
gen_jmp_ptr(&decode.block->link[0].to,offsetof(CacheBlock,cache.start));
if (branch1) {
gen_fill_branch(branch1);
gen_sop_word(SOP_DEC,decode.big_addr,DREG(ECX));
gen_releasereg(DREG(ECX));
}
/* Branch taken */
gen_fill_branch(branch2);
gen_lea(DREG(EIP),DREG(EIP),0,0,eip_base);
gen_releasereg(DREG(EIP));
gen_jmp_ptr(&decode.block->link[1].to,offsetof(CacheBlock,cache.start));
dyn_closeblock();
}
static void dyn_ret_near(Bitu bytes) {
gen_protectflags();
dyn_reduce_cycles();
dyn_pop(DREG(EIP));
if (bytes) gen_dop_word_imm(DOP_ADD,true,DREG(ESP),bytes);
dyn_save_critical_regs();
gen_return(BR_Normal);
dyn_closeblock();
}
static void dyn_call_near_imm(void) {
Bits imm;
if (decode.big_op) imm=(Bit32s)decode_fetchd();
else imm=(Bit16s)decode_fetchw();
dyn_set_eip_end(DREG(TMPW));
dyn_push(DREG(TMPW));
gen_dop_word_imm(DOP_ADD,decode.big_op,DREG(TMPW),imm);
if (cpu.code.big) gen_dop_word(DOP_MOV,true,DREG(EIP),DREG(TMPW));
else gen_extend_word(false,DREG(EIP),DREG(TMPW));
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_jmp_ptr(&decode.block->link[0].to,offsetof(CacheBlock,cache.start));
dyn_closeblock();
}
static void dyn_ret_far(Bitu bytes) {
gen_protectflags();
dyn_reduce_cycles();
dyn_set_eip_last_end(DREG(TMPW));
dyn_flags_gen_to_host();
dyn_save_critical_regs();
gen_call_function((void*)&CPU_RET,"%Id%Id%Drd",decode.big_op,bytes,DREG(TMPW));
gen_return_fast(BR_Normal);
dyn_closeblock();
}
static void dyn_call_far_imm(void) {
Bitu sel,off;
off=decode.big_op ? decode_fetchd() : decode_fetchw();
sel=decode_fetchw();
dyn_reduce_cycles();
dyn_set_eip_last_end(DREG(TMPW));
dyn_flags_gen_to_host();
dyn_save_critical_regs();
gen_call_function((void*)&CPU_CALL,"%Id%Id%Id%Drd",decode.big_op,sel,off,DREG(TMPW));
gen_return_fast(BR_Normal);
dyn_closeblock();
}
static void dyn_jmp_far_imm(void) {
Bitu sel,off;
gen_protectflags();
off=decode.big_op ? decode_fetchd() : decode_fetchw();
sel=decode_fetchw();
dyn_reduce_cycles();
dyn_set_eip_last_end(DREG(TMPW));
dyn_flags_gen_to_host();
dyn_save_critical_regs();
gen_call_function((void*)&CPU_JMP,"%Id%Id%Id%Drd",decode.big_op,sel,off,DREG(TMPW));
gen_return_fast(BR_Normal);
dyn_closeblock();
}
static void dyn_iret(void) {
gen_protectflags();
dyn_flags_gen_to_host();
dyn_reduce_cycles();
dyn_set_eip_last_end(DREG(TMPW));
dyn_save_critical_regs();
gen_call_function((void*)&CPU_IRET,"%Id%Drd",decode.big_op,DREG(TMPW));
gen_return_fast(BR_Iret);
dyn_closeblock();
}
static void dyn_interrupt(Bitu num) {
gen_protectflags();
dyn_flags_gen_to_host();
dyn_reduce_cycles();
dyn_set_eip_last_end(DREG(TMPW));
dyn_save_critical_regs();
gen_call_function((void*)&CPU_Interrupt,"%Id%Id%Drd",num,CPU_INT_SOFTWARE,DREG(TMPW));
gen_return_fast(BR_Normal);
dyn_closeblock();
}
static void dyn_add_iocheck(Bitu access_size) {
gen_call_function((void *)&CPU_IO_Exception,"%Dw%Id",DREG(EDX),access_size);
dyn_check_bool_exception_al();
}
static void dyn_add_iocheck_var(Bit8u accessed_port,Bitu access_size) {
gen_call_function((void *)&CPU_IO_Exception,"%Id%Id",accessed_port,access_size);
dyn_check_bool_exception_al();
}
#ifdef X86_DYNFPU_DH_ENABLED
#include "dyn_fpu_dh.h"
#define dh_fpu_startup() { \
fpu_used=true; \
gen_protectflags(); \
gen_load_host(&dyn_dh_fpu.state_used,DREG(TMPB),4); \
gen_dop_word_imm(DOP_CMP,true,DREG(TMPB),0); \
gen_releasereg(DREG(TMPB)); \
save_info[used_save_info].branch_pos=gen_create_branch_long(BR_Z); \
dyn_savestate(&save_info[used_save_info].state); \
save_info[used_save_info].return_pos=cache.pos; \
save_info[used_save_info].type=fpu_restore; \
used_save_info++; \
}
#endif
#include "dyn_fpu.h"
static CacheBlock * CreateCacheBlock(CodePageHandler * codepage,PhysPt start,Bitu max_opcodes) {
Bits i;
/* Init a load of variables */
decode.code_start=start;
decode.code=start;
Bitu cycles=0;
decode.page.code=codepage;
decode.page.index=start&4095;
decode.page.wmap=codepage->write_map;
decode.page.invmap=codepage->invalidation_map;
decode.page.first=start >> 12;
decode.active_block=decode.block=cache_openblock();
decode.block->page.start=decode.page.index;
codepage->AddCacheBlock(decode.block);
gen_save_host_direct(&cache.block.running,(Bit32u)decode.block);
for (i=0;i<G_MAX;i++) {
DynRegs[i].flags&=~(DYNFLG_ACTIVE|DYNFLG_CHANGED);
DynRegs[i].genreg=0;
}
gen_reinit();
/* Start with the cycles check */
gen_protectflags();
gen_dop_word_imm(DOP_CMP,true,DREG(CYCLES),0);
save_info[used_save_info].branch_pos=gen_create_branch_long(BR_LE);
save_info[used_save_info].type=cycle_check;
used_save_info++;
gen_releasereg(DREG(CYCLES));
decode.cycles=0;
#ifdef X86_DYNFPU_DH_ENABLED
bool fpu_used=false;
#endif
while (max_opcodes--) {
/* Init prefixes */
decode.big_addr=cpu.code.big;
decode.big_op=cpu.code.big;
decode.segprefix=0;
decode.rep=REP_NONE;
decode.cycles++;
decode.op_start=decode.code;
restart_prefix:
Bitu opcode;
if (!decode.page.invmap) opcode=decode_fetchb();
else {
if (decode.page.index<4096) {
if (GCC_UNLIKELY(decode.page.invmap[decode.page.index]>=4)) goto illegalopcode;
opcode=decode_fetchb();
} else {
opcode=decode_fetchb();
if (GCC_UNLIKELY(decode.page.invmap &&
(decode.page.invmap[decode.page.index-1]>=4))) goto illegalopcode;
}
}
switch (opcode) {
case 0x00:dyn_dop_ebgb(DOP_ADD);break;
case 0x01:dyn_dop_evgv(DOP_ADD);break;
case 0x02:dyn_dop_gbeb(DOP_ADD);break;
case 0x03:dyn_dop_gvev(DOP_ADD);break;
case 0x04:gen_discardflags();gen_dop_byte_imm(DOP_ADD,DREG(EAX),0,decode_fetchb());break;
case 0x05:gen_discardflags();dyn_dop_word_imm(DOP_ADD,decode.big_op,DREG(EAX));break;
case 0x06:dyn_push_seg(es);break;
case 0x07:dyn_pop_seg(es);break;
case 0x08:dyn_dop_ebgb(DOP_OR);break;
case 0x09:dyn_dop_evgv(DOP_OR);break;
case 0x0a:dyn_dop_gbeb(DOP_OR);break;
case 0x0b:dyn_dop_gvev(DOP_OR);break;
case 0x0c:gen_discardflags();gen_dop_byte_imm(DOP_OR,DREG(EAX),0,decode_fetchb());break;
case 0x0d:gen_discardflags();gen_dop_word_imm(DOP_OR,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
case 0x0e:dyn_push_seg(cs);break;
case 0x0f:
{
Bitu dual_code=decode_fetchb();
switch (dual_code) {
/* Short conditional jumps */
case 0x80:case 0x81:case 0x82:case 0x83:case 0x84:case 0x85:case 0x86:case 0x87:
case 0x88:case 0x89:case 0x8a:case 0x8b:case 0x8c:case 0x8d:case 0x8e:case 0x8f:
dyn_branched_exit((BranchTypes)(dual_code&0xf),
decode.big_op ? (Bit32s)decode_fetchd() : (Bit16s)decode_fetchw());
goto finish_block;
/* PUSH/POP FS */
case 0xa0:dyn_push_seg(fs);break;
case 0xa1:dyn_pop_seg(fs);break;
/* SHLD Imm/cl*/
case 0xa4:dyn_dshift_ev_gv(true,true);break;
case 0xa5:dyn_dshift_ev_gv(true,false);break;
/* PUSH/POP GS */
case 0xa8:dyn_push_seg(gs);break;
case 0xa9:dyn_pop_seg(gs);break;
/* SHRD Imm/cl*/
case 0xac:dyn_dshift_ev_gv(false,true);break;
case 0xad:dyn_dshift_ev_gv(false,false);break;
/* Imul Ev,Gv */
case 0xaf:dyn_imul_gvev(0);break;
/* CMPXCHG */
case 0xb1:dyn_cmpxchg_evgv();break;
/* LFS,LGS */
case 0xb4:
dyn_get_modrm();
if (GCC_UNLIKELY(decode.modrm.mod==3)) goto illegalopcode;
dyn_load_seg_off_ea(fs);
break;
case 0xb5:
dyn_get_modrm();
if (GCC_UNLIKELY(decode.modrm.mod==3)) goto illegalopcode;
dyn_load_seg_off_ea(gs);
break;
/* MOVZX Gv,Eb/Ew */
case 0xb6:dyn_mov_ev_gb(false);break;
case 0xb7:dyn_mov_ev_gw(false);break;
/* MOVSX Gv,Eb/Ew */
case 0xbe:dyn_mov_ev_gb(true);break;
case 0xbf:dyn_mov_ev_gw(true);break;
default:
#if DYN_LOG
LOG_MSG("Unhandled dual opcode 0F%02X",dual_code);
#endif
goto illegalopcode;
}
}break;
case 0x10:dyn_dop_ebgb(DOP_ADC);break;
case 0x11:dyn_dop_evgv(DOP_ADC);break;
case 0x12:dyn_dop_gbeb(DOP_ADC);break;
case 0x13:dyn_dop_gvev(DOP_ADC);break;
case 0x14:gen_needcarry();gen_dop_byte_imm(DOP_ADC,DREG(EAX),0,decode_fetchb());break;
case 0x15:gen_needcarry();gen_dop_word_imm(DOP_ADC,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
case 0x16:dyn_push_seg(ss);break;
case 0x17:dyn_pop_seg(ss);break;
case 0x18:dyn_dop_ebgb(DOP_SBB);break;
case 0x19:dyn_dop_evgv(DOP_SBB);break;
case 0x1a:dyn_dop_gbeb(DOP_SBB);break;
case 0x1b:dyn_dop_gvev(DOP_SBB);break;
case 0x1c:gen_needcarry();gen_dop_byte_imm(DOP_SBB,DREG(EAX),0,decode_fetchb());break;
case 0x1d:gen_needcarry();gen_dop_word_imm(DOP_SBB,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
case 0x1e:dyn_push_seg(ds);break;
case 0x1f:dyn_pop_seg(ds);break;
case 0x20:dyn_dop_ebgb(DOP_AND);break;
case 0x21:dyn_dop_evgv(DOP_AND);break;
case 0x22:dyn_dop_gbeb(DOP_AND);break;
case 0x23:dyn_dop_gvev(DOP_AND);break;
case 0x24:gen_discardflags();gen_dop_byte_imm(DOP_AND,DREG(EAX),0,decode_fetchb());break;
case 0x25:gen_discardflags();dyn_dop_word_imm(DOP_AND,decode.big_op,DREG(EAX));break;
case 0x26:dyn_segprefix(es);goto restart_prefix;
case 0x28:dyn_dop_ebgb(DOP_SUB);break;
case 0x29:dyn_dop_evgv(DOP_SUB);break;
case 0x2a:dyn_dop_gbeb(DOP_SUB);break;
case 0x2b:dyn_dop_gvev(DOP_SUB);break;
case 0x2c:gen_discardflags();gen_dop_byte_imm(DOP_SUB,DREG(EAX),0,decode_fetchb());break;
case 0x2d:gen_discardflags();gen_dop_word_imm(DOP_SUB,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
case 0x2e:dyn_segprefix(cs);goto restart_prefix;
case 0x30:dyn_dop_ebgb(DOP_XOR);break;
case 0x31:dyn_dop_evgv(DOP_XOR);break;
case 0x32:dyn_dop_gbeb(DOP_XOR);break;
case 0x33:dyn_dop_gvev(DOP_XOR);break;
case 0x34:gen_discardflags();gen_dop_byte_imm(DOP_XOR,DREG(EAX),0,decode_fetchb());break;
case 0x35:gen_discardflags();gen_dop_word_imm(DOP_XOR,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
case 0x36:dyn_segprefix(ss);goto restart_prefix;
case 0x38:dyn_dop_ebgb(DOP_CMP);break;
case 0x39:dyn_dop_evgv(DOP_CMP);break;
case 0x3a:dyn_dop_gbeb(DOP_CMP);break;
case 0x3b:dyn_dop_gvev(DOP_CMP);break;
case 0x3c:gen_discardflags();gen_dop_byte_imm(DOP_CMP,DREG(EAX),0,decode_fetchb());break;
case 0x3d:gen_discardflags();gen_dop_word_imm(DOP_CMP,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
case 0x3e:dyn_segprefix(ds);goto restart_prefix;
/* INC/DEC general register */
case 0x40:case 0x41:case 0x42:case 0x43:case 0x44:case 0x45:case 0x46:case 0x47:
gen_needcarry();gen_sop_word(SOP_INC,decode.big_op,&DynRegs[opcode&7]);
break;
case 0x48:case 0x49:case 0x4a:case 0x4b:case 0x4c:case 0x4d:case 0x4e:case 0x4f:
gen_needcarry();gen_sop_word(SOP_DEC,decode.big_op,&DynRegs[opcode&7]);
break;
/* PUSH/POP General register */
case 0x50:case 0x51:case 0x52:case 0x53:case 0x55:case 0x56:case 0x57:
dyn_push(&DynRegs[opcode&7]);
break;
case 0x54: /* PUSH SP is special */
gen_dop_word(DOP_MOV,true,DREG(TMPW),DREG(ESP));
dyn_push(DREG(TMPW));
gen_releasereg(DREG(TMPW));
break;
case 0x58:case 0x59:case 0x5a:case 0x5b:case 0x5c:case 0x5d:case 0x5e:case 0x5f:
dyn_pop(&DynRegs[opcode&7]);
break;
case 0x60: /* PUSHA */
gen_dop_word(DOP_MOV,true,DREG(TMPW),DREG(ESP));
for (i=G_EAX;i<=G_EDI;i++) {
dyn_push_unchecked((i!=G_ESP) ? &DynRegs[i] : DREG(TMPW));
}
gen_releasereg(DREG(TMPW));
break;
case 0x61: /* POPA */
for (i=G_EDI;i>=G_EAX;i--) {
dyn_pop((i!=G_ESP) ? &DynRegs[i] : DREG(TMPW),false);
}
gen_releasereg(DREG(TMPW));
break;
//segprefix FS,GS
case 0x64:dyn_segprefix(fs);goto restart_prefix;
case 0x65:dyn_segprefix(gs);goto restart_prefix;
//Push immediates
//Operand size
case 0x66:decode.big_op=!cpu.code.big;goto restart_prefix;
//Address size
case 0x67:decode.big_addr=!cpu.code.big;goto restart_prefix;
case 0x68: /* PUSH Iv */
gen_dop_word_imm(DOP_MOV,decode.big_op,DREG(TMPW),decode.big_op ? decode_fetchd() : decode_fetchw());
dyn_push(DREG(TMPW));
gen_releasereg(DREG(TMPW));
break;
/* Imul Ivx */
case 0x69:dyn_imul_gvev(decode.big_op ? 4 : 2);break;
case 0x6a: /* PUSH Ibx */
gen_dop_word_imm(DOP_MOV,true,DREG(TMPW),(Bit8s)decode_fetchb());
dyn_push(DREG(TMPW));
gen_releasereg(DREG(TMPW));
break;
/* Imul Ibx */
case 0x6b:dyn_imul_gvev(1);break;
/* Short conditional jumps */
case 0x70:case 0x71:case 0x72:case 0x73:case 0x74:case 0x75:case 0x76:case 0x77:
case 0x78:case 0x79:case 0x7a:case 0x7b:case 0x7c:case 0x7d:case 0x7e:case 0x7f:
dyn_branched_exit((BranchTypes)(opcode&0xf),(Bit8s)decode_fetchb());
goto finish_block;
/* Group 1 */
case 0x80:dyn_grp1_eb_ib();break;
case 0x81:dyn_grp1_ev_ivx(false);break;
case 0x82:dyn_grp1_eb_ib();break;
case 0x83:dyn_grp1_ev_ivx(true);break;
/* TEST Gb,Eb Gv,Ev */
case 0x84:dyn_dop_gbeb(DOP_TEST);break;
case 0x85:dyn_dop_gvev(DOP_TEST);break;
/* XCHG Eb,Gb Ev,Gv */
case 0x86:dyn_dop_ebgb(DOP_XCHG);break;
case 0x87:dyn_dop_evgv(DOP_XCHG);break;
/* MOV e,g and g,e */
case 0x88:dyn_mov_ebgb();break;
case 0x89:dyn_mov_evgv();break;
case 0x8a:dyn_mov_gbeb();break;
case 0x8b:dyn_mov_gvev();break;
/* MOV ev,seg */
case 0x8c:dyn_mov_ev_seg();break;
/* LEA Gv */
case 0x8d:
dyn_get_modrm();
if (decode.big_op) {
dyn_fill_ea(false,&DynRegs[decode.modrm.reg]);
} else {
dyn_fill_ea(false);
gen_dop_word(DOP_MOV,decode.big_op,&DynRegs[decode.modrm.reg],DREG(EA));
gen_releasereg(DREG(EA));
}
break;
/* Mov seg,ev */
case 0x8e:dyn_mov_seg_ev();break;
/* POP Ev */
case 0x8f:dyn_pop_ev();break;
case 0x90: //NOP
case 0x9b: //WAIT/FWAIT
break;
//XCHG ax,reg
case 0x91:case 0x92:case 0x93:case 0x94:case 0x95:case 0x96:case 0x97:
gen_dop_word(DOP_XCHG,decode.big_op,DREG(EAX),&DynRegs[opcode&07]);
break;
/* CBW/CWDE */
case 0x98:
gen_cbw(decode.big_op,DREG(EAX));
break;
/* CWD/CDQ */
case 0x99:
gen_cwd(decode.big_op,DREG(EAX),DREG(EDX));
break;
/* CALL FAR Ip */
case 0x9a:dyn_call_far_imm();goto finish_block;
case 0x9c: //PUSHF
gen_protectflags();
gen_releasereg(DREG(ESP));
dyn_flags_gen_to_host();
gen_call_function((void *)&CPU_PUSHF,"%Rd%Id",DREG(TMPB),decode.big_op);
dyn_check_bool_exception(DREG(TMPB));
gen_releasereg(DREG(TMPB));
break;
case 0x9d: //POPF
gen_releasereg(DREG(ESP));
gen_releasereg(DREG(FLAGS));
gen_call_function((void *)&CPU_POPF,"%Rd%Id",DREG(TMPB),decode.big_op);
dyn_check_bool_exception(DREG(TMPB));
dyn_flags_host_to_gen();
gen_releasereg(DREG(TMPB));
dyn_check_irqrequest();
break;
/* MOV AL,direct addresses */
case 0xa0:
gen_lea(DREG(EA),decode.segprefix ? decode.segprefix : DREG(DS),0,0,
decode.big_addr ? decode_fetchd() : decode_fetchw());
dyn_read_byte_release(DREG(EA),DREG(EAX),false);
break;
/* MOV AX,direct addresses */
case 0xa1:
gen_lea(DREG(EA),decode.segprefix ? decode.segprefix : DREG(DS),0,0,
decode.big_addr ? decode_fetchd() : decode_fetchw());
dyn_read_word_release(DREG(EA),DREG(EAX),decode.big_op);
break;
/* MOV direct address,AL */
case 0xa2:
if (decode.big_addr) {
Bitu val;
if (decode_fetchd_imm(val)) {
gen_lea_imm_mem(DREG(EA),decode.segprefix ? decode.segprefix : DREG(DS),(void*)val);
} else {
gen_lea(DREG(EA),decode.segprefix ? decode.segprefix : DREG(DS),0,0,(Bits)val);
}
dyn_write_byte_release(DREG(EA),DREG(EAX),false);
} else {
gen_lea(DREG(EA),decode.segprefix ? decode.segprefix : DREG(DS),0,0,decode_fetchw());
dyn_write_byte_release(DREG(EA),DREG(EAX),false);
}
break;
/* MOV direct addresses,AX */
case 0xa3:
gen_lea(DREG(EA),decode.segprefix ? decode.segprefix : DREG(DS),0,0,
decode.big_addr ? decode_fetchd() : decode_fetchw());
dyn_write_word_release(DREG(EA),DREG(EAX),decode.big_op);
break;
/* MOVSB/W/D*/
case 0xa4:dyn_string(STR_MOVSB);break;
case 0xa5:dyn_string(decode.big_op ? STR_MOVSD : STR_MOVSW);break;
/* TEST AL,AX Imm */
case 0xa8:gen_discardflags();gen_dop_byte_imm(DOP_TEST,DREG(EAX),0,decode_fetchb());break;
case 0xa9:gen_discardflags();gen_dop_word_imm(DOP_TEST,decode.big_op,DREG(EAX),decode.big_op ? decode_fetchd() : decode_fetchw());break;
/* STOSB/W/D*/
case 0xaa:dyn_string(STR_STOSB);break;
case 0xab:dyn_string(decode.big_op ? STR_STOSD : STR_STOSW);break;
/* LODSB/W/D*/
case 0xac:dyn_string(STR_LODSB);break;
case 0xad:dyn_string(decode.big_op ? STR_LODSD : STR_LODSW);break;
//Mov Byte reg,Imm byte
case 0xb0:case 0xb1:case 0xb2:case 0xb3:case 0xb4:case 0xb5:case 0xb6:case 0xb7:
gen_dop_byte_imm(DOP_MOV,&DynRegs[opcode&3],opcode&4,decode_fetchb());
break;
//Mov word reg imm byte,word,
case 0xb8:case 0xb9:case 0xba:case 0xbb:case 0xbc:case 0xbd:case 0xbe:case 0xbf:
if (decode.big_op) {
dyn_dop_word_imm(DOP_MOV,decode.big_op,&DynRegs[opcode&7]);break;
} else {
gen_dop_word_imm(DOP_MOV,decode.big_op,&DynRegs[opcode&7],decode_fetchw());break;
}
break;
//GRP2 Eb/Ev,Ib
case 0xc0:dyn_grp2_eb(grp2_imm);break;
case 0xc1:dyn_grp2_ev(grp2_imm);break;
//RET near Iw / Ret
case 0xc2:dyn_ret_near(decode_fetchw());goto finish_block;
case 0xc3:dyn_ret_near(0);goto finish_block;
//LES
case 0xc4:
dyn_get_modrm();
if (GCC_UNLIKELY(decode.modrm.mod==3)) goto illegalopcode;
dyn_load_seg_off_ea(es);
break;
//LDS
case 0xc5:
dyn_get_modrm();
if (GCC_UNLIKELY(decode.modrm.mod==3)) goto illegalopcode;
dyn_load_seg_off_ea(ds);
break;
// MOV Eb/Ev,Ib/Iv
case 0xc6:dyn_mov_ebib();break;
case 0xc7:dyn_mov_eviv();break;
//ENTER and LEAVE
case 0xc8:dyn_enter();break;
case 0xc9:dyn_leave();break;
//RET far Iw / Ret
case 0xca:dyn_ret_far(decode_fetchw());goto finish_block;
case 0xcb:dyn_ret_far(0);goto finish_block;
/* Interrupt */
// case 0xcd:dyn_interrupt(decode_fetchb());goto finish_block;
/* IRET */
case 0xcf:dyn_iret();goto finish_block;
//GRP2 Eb/Ev,1
case 0xd0:dyn_grp2_eb(grp2_1);break;
case 0xd1:dyn_grp2_ev(grp2_1);break;
//GRP2 Eb/Ev,CL
case 0xd2:dyn_grp2_eb(grp2_cl);break;
case 0xd3:dyn_grp2_ev(grp2_cl);break;
//FPU
#ifdef CPU_FPU
case 0xd8:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc0();
else {
dh_fpu_startup();
dh_fpu_esc0();
}
} else
#endif
dyn_fpu_esc0();
break;
case 0xd9:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc1();
else {
dh_fpu_startup();
dh_fpu_esc1();
}
} else
#endif
dyn_fpu_esc1();
break;
case 0xda:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc2();
else {
dh_fpu_startup();
dh_fpu_esc2();
}
} else
#endif
dyn_fpu_esc2();
break;
case 0xdb:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc3();
else {
dh_fpu_startup();
dh_fpu_esc3();
}
} else
#endif
dyn_fpu_esc3();
break;
case 0xdc:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc4();
else {
dh_fpu_startup();
dh_fpu_esc4();
}
} else
#endif
dyn_fpu_esc4();
break;
case 0xdd:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc5();
else {
dh_fpu_startup();
dh_fpu_esc5();
}
} else
#endif
dyn_fpu_esc5();
break;
case 0xde:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc6();
else {
dh_fpu_startup();
dh_fpu_esc6();
}
} else
#endif
dyn_fpu_esc6();
break;
case 0xdf:
#ifdef X86_DYNFPU_DH_ENABLED
if (dyn_dh_fpu.dh_fpu_enabled) {
if (fpu_used) dh_fpu_esc7();
else {
dh_fpu_startup();
dh_fpu_esc7();
}
} else
#endif
dyn_fpu_esc7();
break;
#endif
//Loops
case 0xe2:dyn_loop(LOOP_NONE);goto finish_block;
case 0xe3:dyn_loop(LOOP_JCXZ);goto finish_block;
//IN AL/AX,imm
case 0xe4: {
Bitu port=decode_fetchb();
dyn_add_iocheck_var(port,1);
gen_call_function((void*)&IO_ReadB,"%Id%Rl",port,DREG(EAX));
} break;
case 0xe5: {
Bitu port=decode_fetchb();
dyn_add_iocheck_var(port,decode.big_op?4:2);
if (decode.big_op) {
gen_call_function((void*)&IO_ReadD,"%Id%Rd",port,DREG(EAX));
} else {
gen_call_function((void*)&IO_ReadW,"%Id%Rw",port,DREG(EAX));
}
} break;
//OUT imm,AL
case 0xe6: {
Bitu port=decode_fetchb();
dyn_add_iocheck_var(port,1);
gen_call_function((void*)&IO_WriteB,"%Id%Dl",port,DREG(EAX));
} break;
case 0xe7: {
Bitu port=decode_fetchb();
dyn_add_iocheck_var(port,decode.big_op?4:2);
if (decode.big_op) {
gen_call_function((void*)&IO_WriteD,"%Id%Dd",port,DREG(EAX));
} else {
gen_call_function((void*)&IO_WriteW,"%Id%Dw",port,DREG(EAX));
}
} break;
case 0xe8: /* CALL Ivx */
dyn_call_near_imm();
goto finish_block;
case 0xe9: /* Jmp Ivx */
dyn_exit_link(decode.big_op ? (Bit32s)decode_fetchd() : (Bit16s)decode_fetchw());
goto finish_block;
case 0xea: /* JMP FAR Ip */
dyn_jmp_far_imm();
goto finish_block;
/* Jmp Ibx */
case 0xeb:dyn_exit_link((Bit8s)decode_fetchb());goto finish_block;
/* IN AL/AX,DX*/
case 0xec:
dyn_add_iocheck(1);
gen_call_function((void*)&IO_ReadB,"%Dw%Rl",DREG(EDX),DREG(EAX));
break;
case 0xed:
dyn_add_iocheck(decode.big_op?4:2);
if (decode.big_op) {
gen_call_function((void*)&IO_ReadD,"%Dw%Rd",DREG(EDX),DREG(EAX));
} else {
gen_call_function((void*)&IO_ReadW,"%Dw%Rw",DREG(EDX),DREG(EAX));
}
break;
/* OUT DX,AL/AX */
case 0xee:
dyn_add_iocheck(1);
gen_call_function((void*)&IO_WriteB,"%Dw%Dl",DREG(EDX),DREG(EAX));
break;
case 0xef:
dyn_add_iocheck(decode.big_op?4:2);
if (decode.big_op) {
gen_call_function((void*)&IO_WriteD,"%Dw%Dd",DREG(EDX),DREG(EAX));
} else {
gen_call_function((void*)&IO_WriteW,"%Dw%Dw",DREG(EDX),DREG(EAX));
}
break;
case 0xf0: //LOCK
break;
case 0xf2: //REPNE/NZ
decode.rep=REP_NZ;
goto restart_prefix;
case 0xf3: //REPE/Z
decode.rep=REP_Z;
goto restart_prefix;
/* Change carry flag */
case 0xf5: //CMC
case 0xf8: //CLC
case 0xf9: //STC
gen_needflags();
cache_addb(opcode);break;
/* GRP 3 Eb/EV */
case 0xf6:dyn_grp3_eb();break;
case 0xf7:dyn_grp3_ev();break;
/* Change interrupt flag */
case 0xfa: //CLI
gen_releasereg(DREG(FLAGS));
gen_call_function((void *)&CPU_CLI,"%Rd",DREG(TMPB));
dyn_check_bool_exception(DREG(TMPB));
gen_releasereg(DREG(TMPB));
break;
case 0xfb: //STI
gen_releasereg(DREG(FLAGS));
gen_call_function((void *)&CPU_STI,"%Rd",DREG(TMPB));
dyn_check_bool_exception(DREG(TMPB));
gen_releasereg(DREG(TMPB));
dyn_check_irqrequest();
if (max_opcodes<=0) max_opcodes=1; //Allow 1 extra opcode
break;
case 0xfc: //CLD
gen_protectflags();
gen_dop_word_imm(DOP_AND,true,DREG(FLAGS),~FLAG_DF);
gen_save_host_direct(&cpu.direction,1);
break;
case 0xfd: //STD
gen_protectflags();
gen_dop_word_imm(DOP_OR,true,DREG(FLAGS),FLAG_DF);
gen_save_host_direct(&cpu.direction,-1);
break;
/* GRP 4 Eb and callback's */
case 0xfe:
dyn_get_modrm();
switch (decode.modrm.reg) {
case 0x0://INC Eb
case 0x1://DEC Eb
if (decode.modrm.mod<3) {
dyn_fill_ea();dyn_read_byte(DREG(EA),DREG(TMPB),false);
gen_needcarry();
gen_sop_byte(decode.modrm.reg==0 ? SOP_INC : SOP_DEC,DREG(TMPB),0);
dyn_write_byte_release(DREG(EA),DREG(TMPB),false);
gen_releasereg(DREG(TMPB));
} else {
gen_needcarry();
gen_sop_byte(decode.modrm.reg==0 ? SOP_INC : SOP_DEC,
&DynRegs[decode.modrm.rm&3],decode.modrm.rm&4);
}
break;
case 0x7: //CALBACK Iw
gen_save_host_direct(&core_dyn.callback,decode_fetchw());
dyn_set_eip_end();
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_return(BR_CallBack);
dyn_closeblock();
goto finish_block;
}
break;
case 0xff:
{
dyn_get_modrm();DynReg * src;
if (decode.modrm.mod<3) {
dyn_fill_ea();
dyn_read_word(DREG(EA),DREG(TMPW),decode.big_op);
src=DREG(TMPW);
} else src=&DynRegs[decode.modrm.rm];
switch (decode.modrm.reg) {
case 0x0://INC Ev
case 0x1://DEC Ev
gen_needcarry();
gen_sop_word(decode.modrm.reg==0 ? SOP_INC : SOP_DEC,decode.big_op,src);
if (decode.modrm.mod<3){
dyn_write_word_release(DREG(EA),DREG(TMPW),decode.big_op);
gen_releasereg(DREG(TMPW));
}
break;
case 0x2: /* CALL Ev */
gen_lea(DREG(TMPB),DREG(EIP),0,0,decode.code-decode.code_start);
dyn_push(DREG(TMPB));
gen_releasereg(DREG(TMPB));
gen_dop_word(DOP_MOV,decode.big_op,DREG(EIP),src);
goto core_close_block;
case 0x4: /* JMP Ev */
gen_dop_word(DOP_MOV,decode.big_op,DREG(EIP),src);
goto core_close_block;
case 0x3: /* CALL Ep */
case 0x5: /* JMP Ep */
gen_protectflags();
dyn_flags_gen_to_host();
gen_lea(DREG(EA),DREG(EA),0,0,decode.big_op ? 4: 2);
dyn_read_word(DREG(EA),DREG(EA),false);
dyn_set_eip_last_end(DREG(TMPB));
dyn_save_critical_regs();
gen_call_function(
decode.modrm.reg == 3 ? (void*)&CPU_CALL : (void*)&CPU_JMP,
decode.big_op ? "%Id%Drw%Drd%Drd" : "%Id%Drw%Drw%Drd",
decode.big_op,DREG(EA),DREG(TMPW),DREG(TMPB));
dyn_flags_host_to_gen();
goto core_close_block;
case 0x6: /* PUSH Ev */
gen_releasereg(DREG(EA));
dyn_push(src);
break;
default:
LOG(LOG_CPU,LOG_ERROR)("CPU:GRP5:Illegal opcode 0xff");
goto illegalopcode;
}}
break;
default:
#if DYN_LOG
// LOG_MSG("Dynamic unhandled opcode %X",opcode);
#endif
goto illegalopcode;
}
}
// link to next block because the maximum number of opcodes has been reached
dyn_set_eip_end();
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_jmp_ptr(&decode.block->link[0].to,offsetof(CacheBlock,cache.start));
dyn_closeblock();
goto finish_block;
core_close_block:
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_return(BR_Normal);
dyn_closeblock();
goto finish_block;
illegalopcode:
dyn_set_eip_last();
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_return(BR_Opcode);
dyn_closeblock();
goto finish_block;
#if (C_DEBUG)
dyn_set_eip_last();
dyn_reduce_cycles();
dyn_save_critical_regs();
gen_return(BR_OpcodeFull);
dyn_closeblock();
goto finish_block;
#endif
finish_block:
/* Setup the correct end-address */
decode.active_block->page.end=--decode.page.index;
// LOG_MSG("Created block size %d start %d end %d",decode.block->cache.size,decode.block->page.start,decode.block->page.end);
return decode.block;
}
Reference in New Issue View Git Blame Copy Permalink