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Shrine
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A TempleOS distro for heretics
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Shrine/Compiler/Asm.HC

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Bool PrsAsmImm(CCmpCtrl *cc,CAsmArg *arg)
{
if (arg->imm_or_off_present)
LexExcept(cc,"Already one immediate at ");
arg->imm_or_off_present=TRUE;
arg->num.local_asm_undef_hash=NULL;
arg->num.glbl_asm_undef_hash=NULL;
cc->asm_undef_hash=NULL;
cc->abs_cnts=0;
cc->flags&=~(CCF_UNRESOLVED+CCF_LOCAL);
if (!IsLexExpression2Bin(cc,&arg->num.machine_code))
LexSkipEol(cc);
else {
if (cc->abs_cnts.externs)
LexExcept(cc,"Extern Not Allowed at ");
if (cc->flags & CCF_UNRESOLVED) {
if (cc->flags & CCF_LOCAL) {
arg->num.local_asm_undef_hash=cc->asm_undef_hash;
cc->asm_undef_hash=NULL;
} else {
arg->num.glbl_asm_undef_hash=cc->asm_undef_hash;
cc->asm_undef_hash=NULL;
}
} else {
arg->num.i=Call(arg->num.machine_code);
arg->num.glbl_asm_undef_hash=cc->asm_undef_hash;
cc->asm_undef_hash=NULL;
Free(arg->num.machine_code);
arg->num.machine_code=NULL;
}
}
return TRUE;
}
U0 PrsAsmArg(CCmpCtrl *cc,CAsmArg *arg,Bool rel)
{
CHashGeneric *tmph,*tmph1;
CHashReg *tmpr;
MemSet(arg,0,sizeof(CAsmArg));
arg->seg =REG_NONE;
arg->reg1=REG_NONE;
arg->reg2=REG_NONE;
arg->scale=1;
while (TRUE) {
if (cc->token==TK_IDENT) {
if (tmph=cc->hash_entry) {
if (tmph->type&HTG_TYPE_MASK==HTT_REG) {
tmpr=tmph;
arg->reg1_type=tmpr->reg_type;
switch (tmpr->reg_type) {
start:
case REGT_R8:
arg->size=1;
break;
case REGT_R16:
arg->size=2;
break;
case REGT_R32:
arg->size=4;
break;
case REGT_R64:
arg->size=8;
break;
end:
arg->reg1=tmpr->reg_num;
Lex(cc);
return;
case REGT_SEG:
arg->seg=tmpr->reg_num;
if (Lex(cc)!=':') {
arg->just_seg=TRUE;
return;
} else
Lex(cc); //skip ":"
break;
case REGT_FSTK:
case REGT_MM:
case REGT_XMM:
arg->size=8;
arg->reg1=tmpr->reg_num;
Lex(cc);
return;
}
} else {
if ((tmph->type&HTG_TYPE_MASK==HTT_CLASS||
tmph->type&HTG_TYPE_MASK==HTT_INTERNAL_TYPE) &&
(tmph1=HashFind(cc->cur_str,cmp.asm_hash,HTT_ASM_KEYWORD)))
tmph=tmph1;
if (tmph->type&HTG_TYPE_MASK==HTT_ASM_KEYWORD) {
switch (tmph->user_data0) {
case AKW_I8:
case AKW_U8:
arg->size=1;
break;
case AKW_I16:
case AKW_U16:
arg->size=2;
break;
case AKW_I32:
case AKW_U32:
arg->size=4;
break;
case AKW_I64:
case AKW_U64:
arg->size=8;
break;
default:
LexExcept(cc,"syntax error at ");
}
Lex(cc); //skip keyword
} else
goto pa_asm_direct_imm;
}
} else {
pa_asm_direct_imm:
PrsAsmImm(cc,arg);
arg->num.abs_cnts=cc->abs_cnts;
if (arg->size<=1 && !rel && arg->num.abs_cnts&1) {
if (cc->aotc->seg_size==16)
arg->size=2;
else
arg->size=4;
}
if (cc->token!='[')
return;
}
} else if (cc->token=='[') {
arg->indirect=TRUE;
Lex(cc); // skip [
while (cc->token && cc->token!=']') {
if (cc->token==TK_IDENT) {
if (tmph=cc->hash_entry) {
if (tmph->type&HTG_TYPE_MASK==HTT_REG &&
REGT_R16<=tmph(CHashReg *)->reg_type<=REGT_R64) {
tmpr=tmph;
arg->reg2_type=tmpr->reg_type;
if (arg->reg1==REG_NONE) {
if (tmpr->reg_num&7==REG_RSP) {
arg->reg1=4;
arg->reg2=tmpr->reg_num;
} else
arg->reg1=tmpr->reg_num;
} else
arg->reg2=tmpr->reg_num;
Lex(cc);
} else
goto pa_asm_indirect_imm;
} else
goto pa_asm_indirect_imm;
} else if (cc->token=='*') {
Lex(cc);
if (cc->token!=TK_I64)
LexExcept(cc,"Expecting scale factor at ");
arg->scale=cc->cur_i64;
Lex(cc); //skip scale
if (arg->reg2!=REG_NONE) {
SwapI64(&arg->reg1,&arg->reg2);
SwapI64(&arg->reg1_type,&arg->reg2_type);
}
} else if (cc->token=='+') {
Lex(cc); //skip '+'
} else {
pa_asm_indirect_imm:
PrsAsmImm(cc,arg);
arg->num.abs_cnts=cc->abs_cnts;
}
}
if (cc->token!=']')
LexExcept(cc,"Missing ']' at ");
Lex(cc); //skip ]
return;
} else
goto pa_asm_direct_imm;
}
}
I64 AsmMakeArgMask(CCmpCtrl *cc,CAsmArg *arg)
{
CAOTCtrl *aotc=cc->aotc;
I64 res;
if (arg->just_seg) {
switch (arg->seg) {
case 0: res=1<<ARGT_ES|1<<ARGT_SREG; break;
case 1: res=1<<ARGT_CS|1<<ARGT_SREG; break;
case 2: res=1<<ARGT_SS|1<<ARGT_SREG; break;
case 3: res=1<<ARGT_DS|1<<ARGT_SREG; break;
case 4: res=1<<ARGT_FS|1<<ARGT_SREG; break;
case 5: res=1<<ARGT_GS|1<<ARGT_SREG; break;
}
goto mm_done;
}
if (arg->reg1_type==REGT_FSTK) {
if (arg->reg1)
res=1<<ARGT_STI;
else
res=1<<ARGT_ST0|1<<ARGT_STI;
goto mm_done;
}
res=cmp.size_arg_mask[arg->size];
if (aotc->seg_size==64)
res&=0xFF0FFFFFFF;
if (arg->reg1!=REG_NONE && arg->imm_or_off_present && !arg->num.i &&
!arg->num.glbl_asm_undef_hash && !arg->num.local_asm_undef_hash)
arg->imm_or_off_present=FALSE; //Zero displacement
if (arg->reg2!=REG_NONE || arg->scale!=1) {
res&=0x0000FF0000;
goto mm_done;
}
if (arg->indirect) {
if (arg->imm_or_off_present)
res&=0x00FFFF0000;
else
res&=0x000FFF0000;
} else {
if (arg->imm_or_off_present)
res&=0x000F000FFE;
else
res&=0x3F0FFFF000;
}
if (arg->seg!=REG_NONE)
res&=0x00FFFF0000;
if (arg->reg1==REG_NONE) {
if (arg->indirect)
res&=0x00FFFF0000;
else if (arg->num.i<0) {
if (arg->num.i>=I8_MIN)
res&=0x8FE;
else if (arg->num.i>=I16_MIN)
res&=0x8EE;
else if (arg->num.i>=I32_MIN)
res&=0x8CE;
else
res&=0x88E;
} else {
if (arg->num.i<=I8_MAX)
res&=0xFFE;
else if (arg->num.i<=U8_MAX)
res&=0xFEE;
else if (arg->num.i<=I16_MAX)
res&=0xEEE;
else if (arg->num.i<=U16_MAX)
res&=0xECE;
else if (arg->num.i<=I32_MAX)
res&=0xCCE;
else if (arg->num.i<=U32_MAX)
res&=0xC8E;
else
res&=0x88E;
}
} else {
res&= 0x3F00FFF000;
if (!arg->indirect) //M8-M64
res&=0xFFFF0FFFFF;
}
switch (arg->reg1) {
case REG_RAX: res&=~0x3000000000; break;
case REG_RCX: res&=~0x2F00000000; break;
case REG_RDX: res&=~0x1F00000000; break;
default: res&=~0x3F00000000;
}
mm_done:
return res;
}
Bool AsmStoreNum(CCmpCtrl *cc,CAsmNum2 *num2,I64 cnt,Bool U8_avail)
{
CAOTCtrl *aotc=cc->aotc;
I64 i;
CAOTAbsAddr *tmpa;
if (!num2->imm_flag)
num2->num.i-=num2->rel;
for (i=0;i<cnt;i++) {
if (num2->U8_cnt==1) {
if (num2->num.local_asm_undef_hash||num2->num.glbl_asm_undef_hash)
AsmUnresolvedAdd(cc,num2->num.machine_code,IET_REL_I8+num2->imm_flag,
aotc->rip,num2->rel,num2->num.local_asm_undef_hash,
num2->num.glbl_asm_undef_hash,cc->lex_include_stk->line_num,
U8_avail);
else if (!num2->imm_flag && !(I8_MIN<=num2->num.i<=I8_MAX))
LexExcept(cc,"Branch out of range at ");
if (num2->imm_flag) {
if (num2->num.abs_cnts.abs_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_ADD_U8;
}
} else {
if (num2->num.abs_cnts.c_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_SUB_U8;
}
}
AOTStoreCodeU8(cc,num2->num.i);
} else {
if (num2->U8_cnt==2) {
if (num2->num.local_asm_undef_hash||num2->num.glbl_asm_undef_hash)
AsmUnresolvedAdd(cc,num2->num.machine_code,IET_REL_I16+num2->imm_flag,
aotc->rip,num2->rel,num2->num.local_asm_undef_hash,
num2->num.glbl_asm_undef_hash,cc->lex_include_stk->line_num,
U8_avail);
else if (!num2->imm_flag && !(I16_MIN<=num2->num.i<=I16_MAX))
LexExcept(cc,"Branch out of range at ");
if (num2->imm_flag) {
if (num2->num.abs_cnts.abs_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_ADD_U16;
}
} else {
if (num2->num.abs_cnts.c_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_SUB_U16;
}
}
AOTStoreCodeU8(cc,num2->num.i.u8[0]);
AOTStoreCodeU8(cc,num2->num.i.u8[1]);
} else if (num2->U8_cnt==4) {
if (num2->num.local_asm_undef_hash||num2->num.glbl_asm_undef_hash)
AsmUnresolvedAdd(cc,num2->num.machine_code,IET_REL_I32+num2->imm_flag,
aotc->rip,num2->rel,num2->num.local_asm_undef_hash,
num2->num.glbl_asm_undef_hash,cc->lex_include_stk->line_num,
U8_avail);
else if (!num2->imm_flag && !(I32_MIN<=num2->num.i<=I32_MAX))
LexExcept(cc,"Branch out of range at ");
if (num2->imm_flag) {
if (num2->num.abs_cnts.abs_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_ADD_U32;
}
} else {
if (num2->num.abs_cnts.c_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_SUB_U32;
}
}
AOTStoreCodeU32(cc,num2->num.i);
} else if (num2->U8_cnt==8) {
if (num2->num.local_asm_undef_hash||num2->num.glbl_asm_undef_hash)
AsmUnresolvedAdd(cc,num2->num.machine_code,IET_REL_I64+num2->imm_flag,
aotc->rip,num2->rel,num2->num.local_asm_undef_hash,
num2->num.glbl_asm_undef_hash,cc->lex_include_stk->line_num,
U8_avail);
if (num2->imm_flag) {
if (num2->num.abs_cnts.abs_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_ADD_U64;
}
} else {
if (num2->num.abs_cnts.c_addres&1) {
tmpa=CAlloc(sizeof(CAOTAbsAddr));
tmpa->next=aotc->abss;
aotc->abss=tmpa;
tmpa->rip=aotc->rip;
tmpa->type=AAT_SUB_U64;
}
}
AOTStoreCodeU64(cc,num2->num.i);
}
if (U8_avail && !num2->num.local_asm_undef_hash &&
!num2->num.glbl_asm_undef_hash &&
!num2->imm_flag && -124<=num2->num.i<=123) {
LexWarn(cc,"could use I8 displacement at ");
return FALSE;
}
}
}
return TRUE;
}
U8 asm_seg_prefixes[6]={0x26,0x2E,0x36,0x3E,0x64,0x65};
Bool PrsAsmInst(CCmpCtrl *cc,CHashOpcode *tmpo,I64 argcnt)
{
CAOTCtrl *aotc=cc->aotc;
I64 i,j,arg1,arg2,om,seg,arg1mask,arg2mask;
CAsmArg *tmpa1,*tmpa2;
Bool ModrM_complete,U8_avail=FALSE,found_second_possible=FALSE;
CInst *tmpins;
CAsmIns cur,best;
best.U8_cnt=255;
if (argcnt>0)
arg1mask=AsmMakeArgMask(cc,&aotc->arg1);
else
arg1mask=1;
if (argcnt>1)
arg2mask=AsmMakeArgMask(cc,&aotc->arg2);
else
arg2mask=1;
for (i=0;i<tmpo->inst_entry_cnt;i++) {
tmpins=&tmpo->ins[i];
if (tmpins->arg1==ARGT_REL8 || tmpins->arg2==ARGT_REL8)
U8_avail=TRUE;
if (Bt(&arg1mask,tmpins->arg1) && Bt(&arg2mask,tmpins->arg2) &&
(!(tmpins->flags&IEF_NOT_IN_64_BIT) || aotc->seg_size!=64)) {
MemSet(&cur,0,sizeof(CAsmIns));
cur.tmpins=tmpins;
ModrM_complete=FALSE;
cur.is_dft=ToBool(tmpins->flags & IEF_DFT);
if (aotc->seg_size==64) {
if (tmpins->flags & IEF_48_REX)
cur.REX=0x48;
else
cur.REX=0x40;
}
cur.disp.imm_flag=TRUE;
cur.imm.imm_flag=TRUE;
om=tmpins->opcode_modifier;
arg1=tmpins->arg1;
arg2=tmpins->arg2;
tmpa1=&aotc->arg1;
tmpa2=&aotc->arg2;
cur.last_opcode_U8=tmpins->opcode[tmpins->opcode_cnt-1];
if (tmpins->slash_val<8) {
cur.ModrM|=tmpins->slash_val<<3;
cur.has_ModrM=TRUE;
}
if (aotc->seg_size==16 && tmpins->flags & IEF_OP_SIZE32 ||
aotc->seg_size!=16 && tmpins->flags & IEF_OP_SIZE16)
cur.has_operand_prefix=TRUE;
if (om==OM_IB) cur.imm.U8_cnt=1;
else if (om==OM_IW) cur.imm.U8_cnt=2;
else if (om==OM_ID) cur.imm.U8_cnt=4;
if (om==OM_CB) {
cur.imm.U8_cnt=1;
cur.imm.imm_flag=FALSE;
} else if (om==OM_CW) {
cur.imm.U8_cnt=2;
cur.imm.imm_flag=FALSE;
} else if (om==OM_CD) {
cur.imm.U8_cnt=4;
cur.imm.imm_flag=FALSE;
}
if (argcnt==1) {
if (best.U8_cnt!=255 && !found_second_possible && !best.is_dft) {
found_second_possible=TRUE;
if (!aotc->arg1.size)
PrintWarn("no size specified at %s,%04d\n",
cc->lex_include_stk->full_name,
cc->lex_include_stk->line_num-1);
}
if (tmpins->flags & IEF_PLUS_OPCODE) {
if (tmpins->slash_val==SV_R_REG) {
cur.last_opcode_U8|=tmpa1->reg1&7;
if (tmpa1->reg1&15>7)
cur.REX|=1;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
} else {//SV_I_REG
if (tmpa1->reg1_type==REGT_FSTK)
cur.last_opcode_U8+=tmpa1->reg1;
}
}
if (arg1==ARGT_R64 || arg1==ARGT_RM64 || arg1==ARGT_M64)
cur.REX|=8;
if (ARGT_RM8<=arg1<=ARGT_RM64 || ARGT_M8<=arg1<=ARGT_M64) {
if (aotc->seg_size==16)
cur.has_addr_prefix=TRUE;
cur.has_ModrM=TRUE;
if (tmpa1->imm_or_off_present && tmpa1->indirect &&
tmpa1->reg1==REG_NONE) {
cur.ModrM=cur.ModrM+5;
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
cur.disp.U8_cnt=4;
if (aotc->seg_size==64)
cur.disp.imm_flag=FALSE;
} else {
if (tmpa1->reg2==REG_NONE && tmpa1->scale==1) {
cur.ModrM|=tmpa1->reg1&7;
if (tmpa1->reg1&15>7)
cur.REX|=1;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
} else {
cur.ModrM|=4;
cur.has_SIB=TRUE;
if (tmpa1->scale==1)
cur.SIB=0;
else if (tmpa1->scale==2)
cur.SIB=0x40;
else if (tmpa1->scale==4)
cur.SIB=0x80;
else if (tmpa1->scale==8)
cur.SIB=0xC0;
if (tmpa1->reg2==REG_NONE) {
ModrM_complete=TRUE;
cur.SIB|=(tmpa1->reg1&7)<<3+REG_RBP;
if (tmpa1->reg1&15>7)
cur.REX|=2;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
cur.disp.U8_cnt=4;
} else {
cur.SIB|=(tmpa1->reg1&7)<<3+tmpa1->reg2&7;
if (tmpa1->reg1&15>7)
cur.REX|=2;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
if (tmpa1->reg2&15>7)
cur.REX|=1;
if (tmpa1->reg2>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
if (tmpa1->reg2&7==REG_RBP &&
!tmpa1->imm_or_off_present && tmpa1->indirect) {
cur.ModrM|=0x40;
cur.disp.U8_cnt=1;
ModrM_complete=TRUE;
}
}
}
if (!ModrM_complete) {
if (tmpa1->imm_or_off_present) {
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
if (!cur.disp.num.machine_code &&
I8_MIN<=cur.disp.num.i<=I8_MAX) {
cur.ModrM|=0x40;
cur.disp.U8_cnt=1;
} else if (aotc->seg_size==16) {
cur.ModrM|=0x80;
cur.disp.U8_cnt=2;
} else {
cur.ModrM|=0x80;
cur.disp.U8_cnt=4;
}
} else if (!tmpa1->indirect) {
cur.has_addr_prefix=FALSE;
cur.ModrM|=0xC0;
} else {
if (tmpa1->reg1&7==REG_RBP) {
cur.ModrM|=0x40;
cur.disp.U8_cnt=1;
}
}
}
}
} else if (ARGT_REL8<=arg1<=ARGT_REL32 || ARGT_IMM8<=arg1<=ARGT_IMM64 ||
ARGT_UIMM8<=arg1<=ARGT_UIMM64) {
if (arg1==ARGT_IMM64 || arg2==ARGT_UIMM64)
cur.REX|=8;
MemCpy(&cur.imm.num,&tmpa1->num,sizeof(CAsmNum));
}
} else if (argcnt==2) {
if (best.U8_cnt!=255 && !found_second_possible && !best.is_dft) {
found_second_possible=TRUE;
if (!aotc->arg1.size && !aotc->arg2.size)
PrintWarn("no size specified at %s,%04d\n",
cc->lex_include_stk->full_name,
cc->lex_include_stk->line_num-1);
}
if (tmpins->flags & IEF_PLUS_OPCODE) {
if (tmpins->slash_val==SV_R_REG) {
if (ARGT_AL<=arg1<=ARGT_RAX) {
cur.last_opcode_U8|=tmpa2->reg1&7;
if (tmpa2->reg1&15>7)
cur.REX|=1;
if (tmpa2->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
} else {
cur.last_opcode_U8|=tmpa1->reg1&7;
if (tmpa1->reg1&15>7)
cur.REX|=1;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
}
} else {//SV_I_REG
if (tmpa1->reg1_type==REGT_FSTK)
cur.last_opcode_U8|=tmpa1->reg1;
if (tmpa2->reg1_type==REGT_FSTK)
cur.last_opcode_U8|=tmpa2->reg1;
}
}
if (arg1==ARGT_RM64 || arg2==ARGT_RM64 ||
arg1==ARGT_M64 || arg2==ARGT_M64 ||
arg1==ARGT_R64 || arg2==ARGT_R64)
cur.REX|=8;
if (ARGT_RM8<=arg1<=ARGT_RM64 || ARGT_RM8<=arg2<=ARGT_RM64 ||
ARGT_M8<=arg1<=ARGT_M64 || ARGT_M8<=arg2<=ARGT_M64) {
if (aotc->seg_size==16)
cur.has_addr_prefix=TRUE;
cur.has_ModrM=TRUE;
if (ARGT_RM8<=arg2<=ARGT_RM64 || ARGT_M8<=arg2<=ARGT_M64) {
tmpa1=&aotc->arg2;
tmpa2=&aotc->arg1;
}
if (tmpins->slash_val==SV_R_REG) {
if (tmpa2->just_seg)
cur.ModrM|=tmpa2->seg<<3;
else {
if (tmpa2->reg1==REG_NONE) {
cur.ModrM|=(tmpa1->reg1&7)<<3;
if (tmpa1->reg1&15>7)
cur.REX|=4;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
} else {
cur.ModrM|=(tmpa2->reg1&7)<<3;
if (tmpa2->reg1&15>7)
cur.REX|=4;
if (tmpa2->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
}
}
}
if (tmpa1->reg2==REG_NONE && tmpa1->scale==1) {
if (tmpa1->reg1!=REG_NONE) {
cur.ModrM|=tmpa1->reg1&7;
if (tmpa1->reg1&15>7)
cur.REX|=1;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
}
} else {
cur.ModrM|=4;
cur.has_SIB=TRUE;
if (tmpa1->scale==1)
cur.SIB=0;
else if (tmpa1->scale==2)
cur.SIB=0x40;
else if (tmpa1->scale==4)
cur.SIB=0x80;
else if (tmpa1->scale==8)
cur.SIB=0xC0;
if (tmpa1->reg2==REG_NONE) {
ModrM_complete=TRUE;
cur.SIB|=(tmpa1->reg1&7)<<3+5;
if (tmpa1->reg1&15>7)
cur.REX|=2;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
cur.disp.U8_cnt=4;
} else {
cur.SIB|=(tmpa1->reg1&7)<<3+tmpa1->reg2&7;
if (tmpa1->reg1&15>7)
cur.REX|=2;
if (tmpa1->reg1>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
if (tmpa1->reg2&15>7)
cur.REX|=1;
if (tmpa1->reg2>=20) //RBPu8,RSPu8,RSIu8,RDIu8?
cur.has_REX=TRUE;
if (tmpa1->reg2&7==REG_RBP &&
!tmpa1->imm_or_off_present && tmpa1->indirect) {
cur.ModrM|=0x40;
cur.disp.U8_cnt=1;
ModrM_complete=TRUE;
}
}
}
if (!ModrM_complete) {
if (tmpa1->imm_or_off_present &&
tmpa1->indirect && tmpa1->reg1==REG_NONE) {
cur.ModrM=cur.ModrM&0xF8+5;
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
cur.disp.U8_cnt=4;
if (aotc->seg_size==64)
cur.disp.imm_flag=FALSE;
} else {
if (tmpa1->imm_or_off_present) {
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
if (!cur.disp.num.machine_code &&
I8_MIN<=cur.disp.num.i<=I8_MAX) {
cur.ModrM|=0x40;
cur.disp.U8_cnt=1;
} else if (aotc->seg_size==16) {
cur.ModrM|=0x80;
cur.disp.U8_cnt=2;
} else {
cur.ModrM|=0x80;
cur.disp.U8_cnt=4;
}
} else if (!tmpa1->indirect) {
cur.has_addr_prefix=FALSE;
cur.ModrM|=0xC0;
} else {
if (tmpa1->reg1&7==REG_RBP) {
cur.ModrM|=0x40;
cur.disp.U8_cnt=1;
}
}
}
}
} else if (ARGT_MOFFS8<=arg1<=ARGT_MOFFS64) {
MemCpy(&cur.disp.num,&tmpa1->num,sizeof(CAsmNum));
if (aotc->seg_size==16)
cur.disp.U8_cnt=2;
else
cur.disp.U8_cnt=4;
cur.has_addr_prefix=FALSE;
} else if (ARGT_MOFFS8<=arg2<=ARGT_MOFFS64) {
MemCpy(&cur.disp.num,&tmpa2->num,sizeof(CAsmNum));
if (aotc->seg_size==16)
cur.disp.U8_cnt=2;
else
cur.disp.U8_cnt=4;
cur.has_addr_prefix=FALSE;
} else if (ARGT_IMM8<=arg1<=ARGT_IMM64 ||
ARGT_UIMM8<=arg1<=ARGT_UIMM64) {
MemCpy(&cur.imm.num,&tmpa1->num,sizeof(CAsmNum));
if (arg1==ARGT_IMM8 || arg1==ARGT_UIMM8) cur.imm.U8_cnt=1;
else if (arg1==ARGT_IMM16 || arg1==ARGT_UIMM16) cur.imm.U8_cnt=2;
else if (arg1==ARGT_IMM32 || arg1==ARGT_UIMM32) cur.imm.U8_cnt=4;
else {
cur.imm.U8_cnt=8;
cur.REX|=8;
}
}
if (ARGT_IMM8<=arg2<=ARGT_IMM64 ||
ARGT_UIMM8<=arg2<=ARGT_UIMM64) {
MemCpy(&cur.imm.num,&tmpa2->num,sizeof(CAsmNum));
if (arg2==ARGT_IMM8 || arg2==ARGT_UIMM8) cur.imm.U8_cnt=1;
else if (arg2==ARGT_IMM16 || arg2==ARGT_UIMM16) cur.imm.U8_cnt=2;
else if (arg2==ARGT_IMM32 || arg2==ARGT_UIMM32) {
cur.imm.U8_cnt=4;
if (tmpins->flags&IEF_REX_ONLY_R8_R15 && arg2==ARGT_UIMM32)
cur.REX&=~8;
} else {
cur.imm.U8_cnt=8;
cur.REX|=8;
}
}
}
cur.U8_cnt=tmpins->opcode_cnt+cur.disp.U8_cnt+cur.imm.U8_cnt;
if (cur.has_ModrM) cur.U8_cnt++;
if (cur.has_SIB) cur.U8_cnt++;
if (aotc->seg_size==64 && cur.REX&0x40==0x40 &&
(cur.REX!=0x40 || cur.has_REX) &&
(cur.REX&7 || !(tmpins->flags&IEF_REX_ONLY_R8_R15 ||
tmpins->flags&IEF_REX_XOR_LIKE && tmpa1->reg1==tmpa2->reg1 &&
cur.ModrM&0xC0==0xC0)))
cur.U8_cnt++;
if (cur.U8_cnt<best.U8_cnt &&
!(tmpins->flags & IEF_DONT_SWITCH_MODES &&
(cur.has_addr_prefix || cur.has_operand_prefix)))
MemCpy(&best,&cur,sizeof(CAsmIns));
}
}
if (best.U8_cnt<255) {
tmpins=best.tmpins;
seg=REG_NONE;
if (argcnt>1 && aotc->arg2.seg!=REG_NONE && !aotc->arg2.just_seg)
seg=aotc->arg2.seg;
else if (argcnt>0 && aotc->arg1.seg!=REG_NONE && !aotc->arg1.just_seg)
seg=aotc->arg1.seg;
if (seg!=REG_NONE)
AOTStoreCodeU8(cc,asm_seg_prefixes[seg]);
if (best.has_operand_prefix)
AOTStoreCodeU8(cc,OC_OP_SIZE_PREFIX); //Operand size override
if (best.has_addr_prefix || aotc->seg_size==16 && cur.has_SIB)
AOTStoreCodeU8(cc,OC_ADDR_SIZE_PREFIX); //Operand size override
if (aotc->seg_size==64 && best.REX&0x40==0x40 &&
(best.REX!=0x40 || best.has_REX) &&
(best.REX&7||!(tmpins->flags&IEF_REX_ONLY_R8_R15 ||
tmpins->flags&IEF_REX_XOR_LIKE && tmpa1->reg1==tmpa2->reg1 &&
best.ModrM&0xC0==0xC0)))
AOTStoreCodeU8(cc,best.REX);
for (j=0;j<tmpins->opcode_cnt-1;j++)
AOTStoreCodeU8(cc,tmpins->opcode[j]);
AOTStoreCodeU8(cc,best.last_opcode_U8);
if (best.has_ModrM)
AOTStoreCodeU8(cc,best.ModrM);
if (best.has_SIB)
AOTStoreCodeU8(cc,best.SIB);
if (best.disp.U8_cnt) {
best.disp.rel=aotc->rip+best.disp.U8_cnt+best.imm.U8_cnt;
if (!AsmStoreNum(cc,&best.disp,1,U8_avail))
return FALSE;
}
if (best.imm.U8_cnt) {
best.imm.rel=aotc->rip+best.imm.U8_cnt;
if (!AsmStoreNum(cc,&best.imm,1,U8_avail))
return FALSE;
}
if (tmpins->flags&IEF_ENDING_ZERO) //ENTER inst
AOTStoreCodeU8(cc,0);
return TRUE;
}
LexExcept(cc,"Invalid inst at ");
}
U0 PrsAsmDefine(CCmpCtrl *cc,I64 U8_cnt)
{
Bool is_dup;
I64 i,dup_val;
U8 *ptr;
CAsmNum2 num2;
num2.U8_cnt=U8_cnt;
while (cc->token && cc->token!=';') {
num2.num.local_asm_undef_hash=NULL;
num2.num.glbl_asm_undef_hash=NULL;
if (cc->token==TK_STR) {
ptr=cc->cur_str;
i=cc->cur_str_len-1;
while (i--)
AOTStoreCodeU8(cc,*ptr++);
Lex(cc); //Skip Str
} else {
is_dup=FALSE;
cc->abs_cnts=0;
cc->asm_undef_hash=NULL;
cc->flags&=~(CCF_UNRESOLVED+CCF_LOCAL);
if (!IsLexExpression2Bin(cc,&num2.num.machine_code))
LexSkipEol(cc);
else {
if (cc->abs_cnts.externs)
LexExcept(cc,"Extern Not Allowed at ");
if (cc->flags & CCF_UNRESOLVED) {
if (cc->flags & CCF_LOCAL) {
num2.num.local_asm_undef_hash=cc->asm_undef_hash;
cc->asm_undef_hash=NULL;
} else {
num2.num.glbl_asm_undef_hash=cc->asm_undef_hash;
cc->asm_undef_hash=NULL;
}
} else {
i=Call(num2.num.machine_code);
Free(num2.num.machine_code);
}
}
if (cc->token==TK_IDENT && cc->hash_entry) {
if (cc->hash_entry->type & HTT_ASM_KEYWORD &&
cc->hash_entry->user_data0==AKW_DUP) {
is_dup=TRUE;
if (Lex(cc)!='(')
LexExcept(cc,"Expecting '(' at ");
Lex(cc); //skip (
dup_val=AsmLexExpression(cc);
if (cc->token!=')')
LexExcept(cc,"Expecting ')' at ");
Lex(cc); //SKIP )
}
}
num2.rel=0;
num2.imm_flag=TRUE;
num2.num.abs_cnts=cc->abs_cnts;
if (is_dup) {
if (num2.num.local_asm_undef_hash || num2.num.glbl_asm_undef_hash)
LexExcept(cc,"Undefined DUP cnt at ");
num2.num.i=dup_val;
AsmStoreNum(cc,&num2,i,FALSE);
} else {
num2.num.i=i;
AsmStoreNum(cc,&num2,1,FALSE);
}
}
if (cc->token==',')
Lex(cc);
}
if (cc->token!=';')
LexExcept(cc,"Missing ';' at");
Lex(cc);
}
U0 PrsBinFile(CCmpCtrl *cc)
{
I64 i,size;
U8 *buf,*st;
if (cc->token!=TK_STR)
LexExcept(cc,"Expecting string at ");
st=ExtDft(cc->cur_str,"BIN");
buf=FileRead(st,&size);
Free(st);
for (i=0;i<size;i++)
AOTStoreCodeU8(cc,buf[i]);
if (Lex(cc)!=';')
LexExcept(cc,"Missing ';' at");
Lex(cc);
}
U0 PrsAsmBlk(CCmpCtrl *cc,I64 cmp_flags)
{
CAOTCtrl *aotc=cc->aotc;
I64 i,j,k,argcnt,
old_flags=cc->flags & CCF_ASM_EXPRESSIONS;
CHashOpcode *tmpo;
CHashExport *tmpex;
U8 *next_last_label;
CCodeMisc *g_lb;
aotc->seg_size=64;
cc->flags|=CCF_ASM_EXPRESSIONS;
if (!(cmp_flags&CMPF_ONE_ASM_INS)) {
if (cc->token!='{')
LexExcept(cc,"Expecting '{' at ");
Lex(cc);
}
while (cc->token && cc->token!='}') {
AsmLineLst(cc);
if (cc->token==TK_IDENT && cc->hash_entry) {
if (cc->hash_entry->type&HTT_ASM_KEYWORD) {
i=cc->hash_entry->user_data0;
Lex(cc); //skip keyword
switch (i) {
case AKW_IMPORT:
while (cc->token && cc->token!=';') {
if (cc->token!=TK_IDENT)
LexExcept(cc,"Expecting identifier at ");
else {
tmpex=NULL;
tmpex=CAlloc(sizeof(CHashExport));
tmpex->str=cc->cur_str;
cc->cur_str=0;
tmpex->type=HTT_EXPORT_SYS_SYM|HTF_UNRESOLVED;
HashAdd(tmpex,cc->htc.glbl_hash_table);
tmpex->type|=HTF_IMPORT;
if (Lex(cc)==',')
Lex(cc); //skip ','
}
}
if (cc->token!=';')
LexExcept(cc,"Missing ';' at");
Lex(cc); //skip ';';
break;
case AKW_ORG:
if (cc->htc.local_var_lst)
LexExcept(cc,"ORG not allowed in fun asm blk ");
if (aotc->org!=INVALID_PTR)
LexExcept(cc,"Just one org allowed ");
if (aotc->rip)
LexExcept(cc,"ORG must be at beginning ");
aotc->org=AsmLexExpression(cc);
break;
case AKW_ALIGN:
if (cc->htc.local_var_lst)
LexExcept(cc,"ALIGN not allowed in fun asm blk ");
i=AsmLexExpression(cc);
j=Bsf(i);
if (!i || j!=Bsr(i))
LexExcept(cc,"ALIGN must be power of two at ");
if (!(cc->flags&CCF_AOT_COMPILE) && i>8)
LexExcept(cc,"In JIT mode, max ALIGN is 8 ");
if (j>aotc->max_align_bits) aotc->max_align_bits=j;
i=CeilU64(aotc->rip,i);
if (cc->token!=',')
LexExcept(cc,"Expecting ',' at ");
Lex(cc);
k=AsmLexExpression(cc);
for (j=aotc->rip;j<i;j++)
AOTStoreCodeU8(cc,k);
break;
case AKW_DU8:
PrsAsmDefine(cc,1);
break;
case AKW_DU16:
PrsAsmDefine(cc,2);
break;
case AKW_DU32:
PrsAsmDefine(cc,4);
break;
case AKW_DU64:
PrsAsmDefine(cc,8);
break;
case AKW_BINFILE:
PrsBinFile(cc);
break;
case AKW_LIST:
aotc->lst=TRUE;
break;
case AKW_NOLIST:
aotc->lst=FALSE;
break;
case AKW_USE16:
aotc->seg_size=16;
break;
case AKW_USE32:
aotc->seg_size=32;
break;
case AKW_USE64:
aotc->seg_size=64;
break;
default:
LexExcept(cc,"Syntax error at ");
}
} else if (cc->hash_entry->type & HTT_OPCODE) {
tmpo=cc->hash_entry;
Lex(cc); //skip opcode
argcnt=0;
if (tmpo->ins[0].arg1) {
argcnt++;
if (ARGT_REL8<=tmpo->ins[0].arg1<=ARGT_REL32)
PrsAsmArg(cc,&aotc->arg1,TRUE);
else
PrsAsmArg(cc,&aotc->arg1,FALSE);
if (tmpo->ins[0].arg2) {
argcnt++;
if (cc->token!=',')
LexExcept(cc,"Expecting ',' at ");
else {
Lex(cc); //skip ','
if (ARGT_REL8<=tmpo->ins[0].arg2<=ARGT_REL32)
PrsAsmArg(cc,&aotc->arg2,TRUE);
else
PrsAsmArg(cc,&aotc->arg2,FALSE);
}
}
}
PrsAsmInst(cc,tmpo,argcnt);
} else if (cc->hash_entry->type & HTT_EXPORT_SYS_SYM) {
if (Btr(&cc->hash_entry->type,HTf_UNRESOLVED)) {
if (cc->hash_entry->type & HTF_LOCAL) {
cc->hash_entry(CHashExport *)->val=aotc->rip;
if (Lex(cc)!=':')
LexExcept(cc,"Expecting ':' at ");
Lex(cc);
} else {
if (cc->hash_entry->type & HTF_IMPORT)
LexExcept(cc,"attempt to define import at ");
cc->hash_entry(CHashExport *)->val=aotc->rip;
next_last_label=cc->hash_entry->str;
Lex(cc); //Skip cur_str
if (cc->token!=':' && cc->token!=TK_DBL_COLON)
LexExcept(cc,"Expecting ':' at ");
if (cc->token==TK_DBL_COLON) {
cc->hash_entry->type|=HTF_EXPORT;
HashSrcFileSet(cc,cc->hash_entry);
AOTLocalsResolve(cc);
aotc->last_label=next_last_label;
}
Lex(cc);
}
} else if (cc->hash_entry(CHashExport *)->val==aotc->rip) {
Lex(cc); //Skip cur_str
if (cc->token!=':' && cc->token!=TK_DBL_COLON)
LexExcept(cc,"Expecting ':' at ");
Lex(cc);
} else
LexExcept(cc,"Redefinition at ");
} else
LexExcept(cc,"Syntax error at ");
} else if (cc->token==TK_IDENT) {
tmpex=CAlloc(sizeof(CHashExport));
tmpex->str=cc->cur_str;
cc->cur_str=0;
tmpex->type=HTT_EXPORT_SYS_SYM;
tmpex->val=aotc->rip;
Lex(cc); //Skip cur_str
if (cc->token!=':' && cc->token!=TK_DBL_COLON)
LexExcept(cc,"Expecting ':' at ");
else {
if (*tmpex->str=='@' && tmpex->str[1]=='@') {
if (cc->token==TK_DBL_COLON)
LexExcept(cc,"No local glbl exports at ");
HashAdd(tmpex,cc->htc.local_hash_table);
} else
HashAdd(tmpex,cc->htc.glbl_hash_table);
if (cc->htc.local_var_lst) {//AsmBlk in fun? Also add goto-like label.
if (!(g_lb=COCGoToLabelFind(cc,tmpex->str))) {
g_lb=COCMiscNew(cc,CMT_ASM_LABEL);
g_lb->str=StrNew(tmpex->str);
} else if (g_lb->flags&CMF_DEFINED)
LexExcept(cc,"Duplicate goto label at ");
g_lb->type=CMT_ASM_LABEL;
g_lb->flags|=CMF_DEFINED;
g_lb->rip=aotc->rip;
g_lb->use_cnt++; //Disable warning on unused labels.
ICAdd(cc,IC_LABEL,g_lb,0);
}
if (cc->token==TK_DBL_COLON) {
tmpex->type|=HTF_EXPORT;
HashSrcFileSet(cc,tmpex);
AOTLocalsResolve(cc);
aotc->last_label=tmpex->str;
}
Lex(cc);
}
} else if (cc->token==';')
Lex(cc);
else
LexExcept(cc,"Syntax error at ");
if (cmp_flags&CMPF_ONE_ASM_INS && (cc->token!=TK_IDENT ||
!(tmpo=cc->hash_entry) ||
!(tmpo->type&(HTT_OPCODE|HTT_ASM_KEYWORD))))
break;
}
AOTLocalsResolve(cc);
aotc->lst=FALSE;
cc->flags&=cc->flags&~CCF_ASM_EXPRESSIONS|old_flags;
}