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Itsa me, quake3io!
2005-08-26 04:48:05 +00:00
%{
enum { EAX=0, ECX=1, EDX=2, EBX=3, ESI=6, EDI=7 };
#include "c.h"
#define NODEPTR_TYPE Node
#define OP_LABEL(p) ((p)->op)
#define LEFT_CHILD(p) ((p)->kids[0])
#define RIGHT_CHILD(p) ((p)->kids[1])
#define STATE_LABEL(p) ((p)->x.state)
static void address(Symbol, Symbol, long);
static void blkfetch(int, int, int, int);
static void blkloop(int, int, int, int, int, int[]);
static void blkstore(int, int, int, int);
static void defaddress(Symbol);
static void defconst(int, int, Value);
static void defstring(int, char *);
static void defsymbol(Symbol);
static void doarg(Node);
static void emit2(Node);
static void export(Symbol);
static void clobber(Node);
static void function(Symbol, Symbol [], Symbol [], int);
static void global(Symbol);
static void import(Symbol);
static void local(Symbol);
static void progbeg(int, char **);
static void progend(void);
static void segment(int);
static void space(int);
static void target(Node);
extern int ckstack(Node, int);
extern int memop(Node);
extern int sametree(Node, Node);
static Symbol charreg[32], shortreg[32], intreg[32];
static Symbol fltreg[32];
static Symbol charregw, shortregw, intregw, fltregw;
static int cseg;
static Symbol quo, rem;
%}
%start stmt
%term CNSTF4=4113
%term CNSTF8=8209
%term CNSTF16=16401
%term CNSTI1=1045
%term CNSTI2=2069
%term CNSTI4=4117
%term CNSTI8=8213
%term CNSTP4=4119
%term CNSTP8=8215
%term CNSTU1=1046
%term CNSTU2=2070
%term CNSTU4=4118
%term CNSTU8=8214
%term ARGB=41
%term ARGF4=4129
%term ARGF8=8225
%term ARGF16=16417
%term ARGI4=4133
%term ARGI8=8229
%term ARGP4=4135
%term ARGP8=8231
%term ARGU4=4134
%term ARGU8=8230
%term ASGNB=57
%term ASGNF4=4145
%term ASGNF8=8241
%term ASGNF16=16433
%term ASGNI1=1077
%term ASGNI2=2101
%term ASGNI4=4149
%term ASGNI8=8245
%term ASGNP4=4151
%term ASGNP8=8247
%term ASGNU1=1078
%term ASGNU2=2102
%term ASGNU4=4150
%term ASGNU8=8246
%term INDIRB=73
%term INDIRF4=4161
%term INDIRF8=8257
%term INDIRF16=16449
%term INDIRI1=1093
%term INDIRI2=2117
%term INDIRI4=4165
%term INDIRI8=8261
%term INDIRP4=4167
%term INDIRP8=8263
%term INDIRU1=1094
%term INDIRU2=2118
%term INDIRU4=4166
%term INDIRU8=8262
%term CVFF4=4209
%term CVFF8=8305
%term CVFF16=16497
%term CVFI4=4213
%term CVFI8=8309
%term CVIF4=4225
%term CVIF8=8321
%term CVIF16=16513
%term CVII1=1157
%term CVII2=2181
%term CVII4=4229
%term CVII8=8325
%term CVIU1=1158
%term CVIU2=2182
%term CVIU4=4230
%term CVIU8=8326
%term CVPP4=4247
%term CVPP8=8343
%term CVPP16=16535
%term CVPU4=4246
%term CVPU8=8342
%term CVUI1=1205
%term CVUI2=2229
%term CVUI4=4277
%term CVUI8=8373
%term CVUP4=4279
%term CVUP8=8375
%term CVUP16=16567
%term CVUU1=1206
%term CVUU2=2230
%term CVUU4=4278
%term CVUU8=8374
%term NEGF4=4289
%term NEGF8=8385
%term NEGF16=16577
%term NEGI4=4293
%term NEGI8=8389
%term CALLB=217
%term CALLF4=4305
%term CALLF8=8401
%term CALLF16=16593
%term CALLI4=4309
%term CALLI8=8405
%term CALLP4=4311
%term CALLP8=8407
%term CALLU4=4310
%term CALLU8=8406
%term CALLV=216
%term RETF4=4337
%term RETF8=8433
%term RETF16=16625
%term RETI4=4341
%term RETI8=8437
%term RETP4=4343
%term RETP8=8439
%term RETU4=4342
%term RETU8=8438
%term RETV=248
%term ADDRGP4=4359
%term ADDRGP8=8455
%term ADDRFP4=4375
%term ADDRFP8=8471
%term ADDRLP4=4391
%term ADDRLP8=8487
%term ADDF4=4401
%term ADDF8=8497
%term ADDF16=16689
%term ADDI4=4405
%term ADDI8=8501
%term ADDP4=4407
%term ADDP8=8503
%term ADDU4=4406
%term ADDU8=8502
%term SUBF4=4417
%term SUBF8=8513
%term SUBF16=16705
%term SUBI4=4421
%term SUBI8=8517
%term SUBP4=4423
%term SUBP8=8519
%term SUBU4=4422
%term SUBU8=8518
%term LSHI4=4437
%term LSHI8=8533
%term LSHU4=4438
%term LSHU8=8534
%term MODI4=4453
%term MODI8=8549
%term MODU4=4454
%term MODU8=8550
%term RSHI4=4469
%term RSHI8=8565
%term RSHU4=4470
%term RSHU8=8566
%term BANDI4=4485
%term BANDI8=8581
%term BANDU4=4486
%term BANDU8=8582
%term BCOMI4=4501
%term BCOMI8=8597
%term BCOMU4=4502
%term BCOMU8=8598
%term BORI4=4517
%term BORI8=8613
%term BORU4=4518
%term BORU8=8614
%term BXORI4=4533
%term BXORI8=8629
%term BXORU4=4534
%term BXORU8=8630
%term DIVF4=4545
%term DIVF8=8641
%term DIVF16=16833
%term DIVI4=4549
%term DIVI8=8645
%term DIVU4=4550
%term DIVU8=8646
%term MULF4=4561
%term MULF8=8657
%term MULF16=16849
%term MULI4=4565
%term MULI8=8661
%term MULU4=4566
%term MULU8=8662
%term EQF4=4577
%term EQF8=8673
%term EQF16=16865
%term EQI4=4581
%term EQI8=8677
%term EQU4=4582
%term EQU8=8678
%term GEF4=4593
%term GEF8=8689
%term GEI4=4597
%term GEI8=8693
%term GEI16=16885
%term GEU4=4598
%term GEU8=8694
%term GTF4=4609
%term GTF8=8705
%term GTF16=16897
%term GTI4=4613
%term GTI8=8709
%term GTU4=4614
%term GTU8=8710
%term LEF4=4625
%term LEF8=8721
%term LEF16=16913
%term LEI4=4629
%term LEI8=8725
%term LEU4=4630
%term LEU8=8726
%term LTF4=4641
%term LTF8=8737
%term LTF16=16929
%term LTI4=4645
%term LTI8=8741
%term LTU4=4646
%term LTU8=8742
%term NEF4=4657
%term NEF8=8753
%term NEF16=16945
%term NEI4=4661
%term NEI8=8757
%term NEU4=4662
%term NEU8=8758
%term JUMPV=584
%term LABELV=600
%term LOADB=233
%term LOADF4=4321
%term LOADF8=8417
%term LOADF16=16609
%term LOADI1=1253
%term LOADI2=2277
%term LOADI4=4325
%term LOADI8=8421
%term LOADP4=4327
%term LOADP8=8423
%term LOADU1=1254
%term LOADU2=2278
%term LOADU4=4326
%term LOADU8=8422
%term VREGP=711
%%
reg: INDIRI1(VREGP) "# read register\n"
reg: INDIRU1(VREGP) "# read register\n"
reg: INDIRI2(VREGP) "# read register\n"
reg: INDIRU2(VREGP) "# read register\n"
reg: INDIRF4(VREGP) "# read register\n"
reg: INDIRI4(VREGP) "# read register\n"
reg: INDIRP4(VREGP) "# read register\n"
reg: INDIRU4(VREGP) "# read register\n"
reg: INDIRF8(VREGP) "# read register\n"
reg: INDIRI8(VREGP) "# read register\n"
reg: INDIRP8(VREGP) "# read register\n"
reg: INDIRU8(VREGP) "# read register\n"
stmt: ASGNI1(VREGP,reg) "# write register\n"
stmt: ASGNU1(VREGP,reg) "# write register\n"
stmt: ASGNI2(VREGP,reg) "# write register\n"
stmt: ASGNU2(VREGP,reg) "# write register\n"
stmt: ASGNF4(VREGP,reg) "# write register\n"
stmt: ASGNI4(VREGP,reg) "# write register\n"
stmt: ASGNP4(VREGP,reg) "# write register\n"
stmt: ASGNU4(VREGP,reg) "# write register\n"
stmt: ASGNF8(VREGP,reg) "# write register\n"
stmt: ASGNI8(VREGP,reg) "# write register\n"
stmt: ASGNP8(VREGP,reg) "# write register\n"
stmt: ASGNU8(VREGP,reg) "# write register\n"
con: CNSTI1 "%a"
con: CNSTU1 "%a"
con: CNSTI2 "%a"
con: CNSTU2 "%a"
con: CNSTI4 "%a"
con: CNSTU4 "%a"
con: CNSTP4 "%a"
con: CNSTI8 "%a"
con: CNSTU8 "%a"
con: CNSTP8 "%a"
stmt: reg ""
acon: ADDRGP4 "(%a)"
acon: con "(%0)"
base: ADDRGP4 "(%a)"
base: reg "[%0]"
base: ADDI4(reg,acon) "%1[%0]"
base: ADDP4(reg,acon) "%1[%0]"
base: ADDU4(reg,acon) "%1[%0]"
base: ADDRFP4 "(%a)[ebp]"
base: ADDRLP4 "(%a)[ebp]"
index: reg "%0"
index: LSHI4(reg,con1) "%0*2"
index: LSHI4(reg,con2) "%0*4"
index: LSHI4(reg,con3) "%0*8"
con1: CNSTI4 "1" range(a, 1, 1)
con1: CNSTU4 "1" range(a, 1, 1)
con2: CNSTI4 "2" range(a, 2, 2)
con2: CNSTU4 "2" range(a, 2, 2)
con3: CNSTI4 "3" range(a, 3, 3)
con3: CNSTU4 "3" range(a, 3, 3)
index: LSHU4(reg,con1) "%0*2"
index: LSHU4(reg,con2) "%0*4"
index: LSHU4(reg,con3) "%0*8"
addr: base "%0"
addr: ADDI4(index,base) "%1[%0]"
addr: ADDP4(index,base) "%1[%0]"
addr: ADDU4(index,base) "%1[%0]"
addr: index "[%0]"
mem: INDIRI1(addr) "byte ptr %0"
mem: INDIRI2(addr) "word ptr %0"
mem: INDIRI4(addr) "dword ptr %0"
mem: INDIRU1(addr) "byte ptr %0"
mem: INDIRU2(addr) "word ptr %0"
mem: INDIRU4(addr) "dword ptr %0"
mem: INDIRP4(addr) "dword ptr %0"
rc: reg "%0"
rc: con "%0"
mr: reg "%0"
mr: mem "%0"
mrc0: mem "%0"
mrc0: rc "%0"
mrc1: mem "%0" 1
mrc1: rc "%0"
mrc3: mem "%0" 3
mrc3: rc "%0"
reg: addr "lea %c,%0\n" 1
reg: mrc0 "mov %c,%0\n" 1
reg: LOADI1(reg) "# move\n" 1
reg: LOADI2(reg) "# move\n" 1
reg: LOADI4(reg) "# move\n" move(a)
reg: LOADU1(reg) "# move\n" 1
reg: LOADU2(reg) "# move\n" 1
reg: LOADU4(reg) "# move\n" move(a)
reg: LOADP4(reg) "# move\n" move(a)
reg: ADDI4(reg,mrc1) "?mov %c,%0\nadd %c,%1\n" 1
reg: ADDP4(reg,mrc1) "?mov %c,%0\nadd %c,%1\n" 1
reg: ADDU4(reg,mrc1) "?mov %c,%0\nadd %c,%1\n" 1
reg: SUBI4(reg,mrc1) "?mov %c,%0\nsub %c,%1\n" 1
reg: SUBP4(reg,mrc1) "?mov %c,%0\nsub %c,%1\n" 1
reg: SUBU4(reg,mrc1) "?mov %c,%0\nsub %c,%1\n" 1
reg: BANDI4(reg,mrc1) "?mov %c,%0\nand %c,%1\n" 1
reg: BORI4(reg,mrc1) "?mov %c,%0\nor %c,%1\n" 1
reg: BXORI4(reg,mrc1) "?mov %c,%0\nxor %c,%1\n" 1
reg: BANDU4(reg,mrc1) "?mov %c,%0\nand %c,%1\n" 1
reg: BORU4(reg,mrc1) "?mov %c,%0\nor %c,%1\n" 1
reg: BXORU4(reg,mrc1) "?mov %c,%0\nxor %c,%1\n" 1
stmt: ASGNI4(addr,ADDI4(mem,con1)) "inc %1\n" memop(a)
stmt: ASGNI4(addr,ADDU4(mem,con1)) "inc %1\n" memop(a)
stmt: ASGNP4(addr,ADDP4(mem,con1)) "inc %1\n" memop(a)
stmt: ASGNI4(addr,SUBI4(mem,con1)) "dec %1\n" memop(a)
stmt: ASGNI4(addr,SUBU4(mem,con1)) "dec %1\n" memop(a)
stmt: ASGNP4(addr,SUBP4(mem,con1)) "dec %1\n" memop(a)
stmt: ASGNI4(addr,ADDI4(mem,rc)) "add %1,%2\n" memop(a)
stmt: ASGNI4(addr,SUBI4(mem,rc)) "sub %1,%2\n" memop(a)
stmt: ASGNU4(addr,ADDU4(mem,rc)) "add %1,%2\n" memop(a)
stmt: ASGNU4(addr,SUBU4(mem,rc)) "sub %1,%2\n" memop(a)
stmt: ASGNI4(addr,BANDI4(mem,rc)) "and %1,%2\n" memop(a)
stmt: ASGNI4(addr,BORI4(mem,rc)) "or %1,%2\n" memop(a)
stmt: ASGNI4(addr,BXORI4(mem,rc)) "xor %1,%2\n" memop(a)
stmt: ASGNU4(addr,BANDU4(mem,rc)) "and %1,%2\n" memop(a)
stmt: ASGNU4(addr,BORU4(mem,rc)) "or %1,%2\n" memop(a)
stmt: ASGNU4(addr,BXORU4(mem,rc)) "xor %1,%2\n" memop(a)
reg: BCOMI4(reg) "?mov %c,%0\nnot %c\n" 2
reg: BCOMU4(reg) "?mov %c,%0\nnot %c\n" 2
reg: NEGI4(reg) "?mov %c,%0\nneg %c\n" 2
stmt: ASGNI4(addr,BCOMI4(mem)) "not %1\n" memop(a)
stmt: ASGNU4(addr,BCOMU4(mem)) "not %1\n" memop(a)
stmt: ASGNI4(addr,NEGI4(mem)) "neg %1\n" memop(a)
reg: LSHI4(reg,con5) "?mov %c,%0\nsal %c,%1\n" 2
reg: LSHU4(reg,con5) "?mov %c,%0\nshl %c,%1\n" 2
reg: RSHI4(reg,con5) "?mov %c,%0\nsar %c,%1\n" 2
reg: RSHU4(reg,con5) "?mov %c,%0\nshr %c,%1\n" 2
stmt: ASGNI4(addr,LSHI4(mem,con5)) "sal %1,%2\n" memop(a)
stmt: ASGNI4(addr,LSHU4(mem,con5)) "shl %1,%2\n" memop(a)
stmt: ASGNI4(addr,RSHI4(mem,con5)) "sar %1,%2\n" memop(a)
stmt: ASGNI4(addr,RSHU4(mem,con5)) "shr %1,%2\n" memop(a)
con5: CNSTI4 "%a" range(a, 0, 31)
reg: LSHI4(reg,reg) "?mov %c,%0\nmov ecx,%1\nsal %c,cl\n" 3
reg: LSHU4(reg,reg) "?mov %c,%0\nmov ecx,%1\nshl %c,cl\n" 2
reg: RSHI4(reg,reg) "?mov %c,%0\nmov ecx,%1\nsar %c,cl\n" 2
reg: RSHU4(reg,reg) "?mov %c,%0\nmov ecx,%1\nshr %c,cl\n" 2
reg: MULI4(reg,mrc3) "?mov %c,%0\nimul %c,%1\n" 14
reg: MULI4(con,mr) "imul %c,%1,%0\n" 13
reg: MULU4(reg,mr) "mul %1\n" 13
reg: DIVU4(reg,reg) "xor edx,edx\ndiv %1\n"
reg: MODU4(reg,reg) "xor edx,edx\ndiv %1\n"
reg: DIVI4(reg,reg) "cdq\nidiv %1\n"
reg: MODI4(reg,reg) "cdq\nidiv %1\n"
reg: CVPU4(reg) "mov %c,%0\n" move(a)
reg: CVUP4(reg) "mov %c,%0\n" move(a)
reg: CVII4(INDIRI1(addr)) "movsx %c,byte ptr %0\n" 3
reg: CVII4(INDIRI2(addr)) "movsx %c,word ptr %0\n" 3
reg: CVUU4(INDIRU1(addr)) "movzx %c,byte ptr %0\n" 3
reg: CVUU4(INDIRU2(addr)) "movzx %c,word ptr %0\n" 3
reg: CVII4(reg) "# extend\n" 3
reg: CVIU4(reg) "# extend\n" 3
reg: CVUI4(reg) "# extend\n" 3
reg: CVUU4(reg) "# extend\n" 3
reg: CVII1(reg) "# truncate\n" 1
reg: CVII2(reg) "# truncate\n" 1
reg: CVUU1(reg) "# truncate\n" 1
reg: CVUU2(reg) "# truncate\n" 1
stmt: ASGNI1(addr,rc) "mov byte ptr %0,%1\n" 1
stmt: ASGNI2(addr,rc) "mov word ptr %0,%1\n" 1
stmt: ASGNI4(addr,rc) "mov dword ptr %0,%1\n" 1
stmt: ASGNU1(addr,rc) "mov byte ptr %0,%1\n" 1
stmt: ASGNU2(addr,rc) "mov word ptr %0,%1\n" 1
stmt: ASGNU4(addr,rc) "mov dword ptr %0,%1\n" 1
stmt: ASGNP4(addr,rc) "mov dword ptr %0,%1\n" 1
stmt: ARGI4(mrc3) "push %0\n" 1
stmt: ARGU4(mrc3) "push %0\n" 1
stmt: ARGP4(mrc3) "push %0\n" 1
stmt: ASGNB(reg,INDIRB(reg)) "mov ecx,%a\nrep movsb\n"
stmt: ARGB(INDIRB(reg)) "sub esp,%a\nmov edi,esp\nmov ecx,%a\nrep movsb\n"
memf: INDIRF8(addr) "qword ptr %0"
memf: INDIRF4(addr) "dword ptr %0"
memf: CVFF8(INDIRF4(addr)) "dword ptr %0"
reg: memf "fld %0\n" 3
stmt: ASGNF8(addr,reg) "fstp qword ptr %0\n" 7
stmt: ASGNF4(addr,reg) "fstp dword ptr %0\n" 7
stmt: ASGNF4(addr,CVFF4(reg)) "fstp dword ptr %0\n" 7
stmt: ARGF8(reg) "sub esp,8\nfstp qword ptr [esp]\n"
stmt: ARGF4(reg) "sub esp,4\nfstp dword ptr [esp]\n"
reg: NEGF8(reg) "fchs\n"
reg: NEGF4(reg) "fchs\n"
flt: memf " %0"
flt: reg "p st(1),st"
reg: ADDF8(reg,flt) "fadd%1\n"
reg: ADDF4(reg,flt) "fadd%1\n"
reg: DIVF8(reg,flt) "fdiv%1\n"
reg: DIVF4(reg,flt) "fdiv%1\n"
reg: MULF8(reg,flt) "fmul%1\n"
reg: MULF4(reg,flt) "fmul%1\n"
reg: SUBF8(reg,flt) "fsub%1\n"
reg: SUBF4(reg,flt) "fsub%1\n"
reg: CVFF8(reg) "# CVFF8\n"
reg: CVFF4(reg) "sub esp,4\nfstp dword ptr 0[esp]\nfld dword ptr 0[esp]\nadd esp,4\n" 12
reg: CVFI4(reg) "call __ftol\n" 31
reg: CVIF8(INDIRI4(addr)) "fild dword ptr %0\n" 10
reg: CVIF4(reg) "push %0\nfild dword ptr 0[esp]\nadd esp,4\n" 12
reg: CVIF8(reg) "push %0\nfild dword ptr 0[esp]\nadd esp,4\n" 12
addrj: ADDRGP4 "%a"
addrj: reg "%0" 2
addrj: mem "%0" 2
stmt: JUMPV(addrj) "jmp %0\n" 3
stmt: LABELV "%a:\n"
stmt: EQI4(mem,rc) "cmp %0,%1\nje %a\n" 5
stmt: GEI4(mem,rc) "cmp %0,%1\njge %a\n" 5
stmt: GTI4(mem,rc) "cmp %0,%1\njg %a\n" 5
stmt: LEI4(mem,rc) "cmp %0,%1\njle %a\n" 5
stmt: LTI4(mem,rc) "cmp %0,%1\njl %a\n" 5
stmt: NEI4(mem,rc) "cmp %0,%1\njne %a\n" 5
stmt: GEU4(mem,rc) "cmp %0,%1\njae %a\n" 5
stmt: GTU4(mem,rc) "cmp %0,%1\nja %a\n" 5
stmt: LEU4(mem,rc) "cmp %0,%1\njbe %a\n" 5
stmt: LTU4(mem,rc) "cmp %0,%1\njb %a\n" 5
stmt: EQI4(reg,mrc1) "cmp %0,%1\nje %a\n" 4
stmt: GEI4(reg,mrc1) "cmp %0,%1\njge %a\n" 4
stmt: GTI4(reg,mrc1) "cmp %0,%1\njg %a\n" 4
stmt: LEI4(reg,mrc1) "cmp %0,%1\njle %a\n" 4
stmt: LTI4(reg,mrc1) "cmp %0,%1\njl %a\n" 4
stmt: NEI4(reg,mrc1) "cmp %0,%1\njne %a\n" 4
stmt: EQU4(reg,mrc1) "cmp %0,%1\nje %a\n" 4
stmt: GEU4(reg,mrc1) "cmp %0,%1\njae %a\n" 4
stmt: GTU4(reg,mrc1) "cmp %0,%1\nja %a\n" 4
stmt: LEU4(reg,mrc1) "cmp %0,%1\njbe %a\n" 4
stmt: LTU4(reg,mrc1) "cmp %0,%1\njb %a\n" 4
stmt: NEU4(reg,mrc1) "cmp %0,%1\njne %a\n" 4
cmpf: memf " %0"
cmpf: reg "p"
stmt: EQF8(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\nje %a\n"
stmt: GEF8(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njbe %a\n"
stmt: GTF8(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njb %a\n"
stmt: LEF8(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njae %a\n"
stmt: LTF8(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\nja %a\n"
stmt: NEF8(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njne %a\n"
stmt: EQF4(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\nje %a\n"
stmt: GEF4(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njbe %a\n"
stmt: GTF4(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njb %a\n"
stmt: LEF4(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njae %a\n"
stmt: LTF4(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\nja %a\n"
stmt: NEF4(cmpf,reg) "fcomp%0\nfstsw ax\nsahf\njne %a\n"
reg: CALLI4(addrj) "call %0\nadd esp,%a\n"
reg: CALLU4(addrj) "call %0\nadd esp,%a\n"
reg: CALLP4(addrj) "call %0\nadd esp,%a\n"
stmt: CALLV(addrj) "call %0\nadd esp,%a\n"
reg: CALLF4(addrj) "call %0\nadd esp,%a\n"
reg: CALLF8(addrj) "call %0\nadd esp,%a\n"
stmt: CALLF4(addrj) "call %0\nadd esp,%a\nfstp\n"
stmt: CALLF8(addrj) "call %0\nadd esp,%a\nfstp\n"
stmt: RETI4(reg) "# ret\n"
stmt: RETU4(reg) "# ret\n"
stmt: RETP4(reg) "# ret\n"
stmt: RETF4(reg) "# ret\n"
stmt: RETF8(reg) "# ret\n"
%%
static void progbeg(int argc, char *argv[]) {
int i;
{
union {
char c;
int i;
} u;
u.i = 0;
u.c = 1;
swap = ((int)(u.i == 1)) != IR->little_endian;
}
parseflags(argc, argv);
intreg[EAX] = mkreg("eax", EAX, 1, IREG);
intreg[EDX] = mkreg("edx", EDX, 1, IREG);
intreg[ECX] = mkreg("ecx", ECX, 1, IREG);
intreg[EBX] = mkreg("ebx", EBX, 1, IREG);
intreg[ESI] = mkreg("esi", ESI, 1, IREG);
intreg[EDI] = mkreg("edi", EDI, 1, IREG);
shortreg[EAX] = mkreg("ax", EAX, 1, IREG);
shortreg[ECX] = mkreg("cx", ECX, 1, IREG);
shortreg[EDX] = mkreg("dx", EDX, 1, IREG);
shortreg[EBX] = mkreg("bx", EBX, 1, IREG);
shortreg[ESI] = mkreg("si", ESI, 1, IREG);
shortreg[EDI] = mkreg("di", EDI, 1, IREG);
charreg[EAX] = mkreg("al", EAX, 1, IREG);
charreg[ECX] = mkreg("cl", ECX, 1, IREG);
charreg[EDX] = mkreg("dl", EDX, 1, IREG);
charreg[EBX] = mkreg("bl", EBX, 1, IREG);
for (i = 0; i < 8; i++)
fltreg[i] = mkreg("%d", i, 0, FREG);
charregw = mkwildcard(charreg);
shortregw = mkwildcard(shortreg);
intregw = mkwildcard(intreg);
fltregw = mkwildcard(fltreg);
tmask[IREG] = (1<<EDI) | (1<<ESI) | (1<<EBX)
| (1<<EDX) | (1<<ECX) | (1<<EAX);
vmask[IREG] = 0;
tmask[FREG] = 0xff;
vmask[FREG] = 0;
print(".486\n");
print(".model flat\n");
print("extrn __fltused:near\n");
print("extrn __ftol:near\n");
cseg = 0;
quo = mkreg("eax", EAX, 1, IREG);
quo->x.regnode->mask |= 1<<EDX;
rem = mkreg("edx", EDX, 1, IREG);
rem->x.regnode->mask |= 1<<EAX;
}
static Symbol rmap(int opk) {
switch (optype(opk)) {
case B: case P:
return intregw;
case I: case U:
if (opsize(opk) == 1)
return charregw;
else if (opsize(opk) == 2)
return shortregw;
else
return intregw;
case F:
return fltregw;
default:
return 0;
}
}
static void segment(int n) {
if (n == cseg)
return;
if (cseg == CODE || cseg == LIT)
print("_TEXT ends\n");
else if (cseg == DATA || cseg == BSS)
print("_DATA ends\n");
cseg = n;
if (cseg == CODE || cseg == LIT)
print("_TEXT segment\n");
else if (cseg == DATA || cseg == BSS)
print("_DATA segment\n");
}
static void progend(void) {
segment(0);
print("end\n");
}
static void target(Node p) {
assert(p);
switch (specific(p->op)) {
case MUL+U:
setreg(p, quo);
rtarget(p, 0, intreg[EAX]);
break;
case DIV+I: case DIV+U:
setreg(p, quo);
rtarget(p, 0, quo);
break;
case MOD+I: case MOD+U:
setreg(p, rem);
rtarget(p, 0, quo);
break;
case ASGN+B:
rtarget(p, 0, intreg[EDI]);
rtarget(p->kids[1], 0, intreg[ESI]);
break;
case ARG+B:
rtarget(p->kids[0], 0, intreg[ESI]);
break;
case CVF+I:
setreg(p, intreg[EAX]);
break;
case CALL+I: case CALL+U: case CALL+P: case CALL+V:
setreg(p, intreg[EAX]);
break;
case RET+I: case RET+U: case RET+P:
rtarget(p, 0, intreg[EAX]);
break;
}
}
static void clobber(Node p) {
static int nstack = 0;
assert(p);
nstack = ckstack(p, nstack);
switch (specific(p->op)) {
case RSH+I: case RSH+U: case LSH+I: case LSH+U:
if (generic(p->kids[1]->op) != CNST
&& !( generic(p->kids[1]->op) == INDIR
&& specific(p->kids[1]->kids[0]->op) == VREG+P
&& p->kids[1]->syms[RX]->u.t.cse
&& generic(p->kids[1]->syms[RX]->u.t.cse->op) == CNST
)) {
spill(1<<ECX, 1, p);
}
break;
case ASGN+B: case ARG+B:
spill(1<<ECX | 1<<ESI | 1<<EDI, IREG, p);
break;
case EQ+F: case LE+F: case GE+F: case LT+F: case GT+F: case NE+F:
spill(1<<EAX, IREG, p);
break;
case CALL+F:
spill(1<<EDX | 1<<EAX | 1<<ECX, IREG, p);
break;
case CALL+I: case CALL+U: case CALL+P: case CALL+V:
spill(1<<EDX | 1<<ECX, IREG, p);
break;
}
}
#define isfp(p) (optype((p)->op)==F)
int ckstack(Node p, int n) {
int i;
for (i = 0; i < NELEMS(p->x.kids) && p->x.kids[i]; i++)
if (isfp(p->x.kids[i]))
n--;
if (isfp(p) && p->count > 0)
n++;
if (n > 8)
error("expression too complicated\n");
debug(fprint(stderr, "(ckstack(%x)=%d)\n", p, n));
assert(n >= 0);
return n;
}
int memop(Node p) {
assert(p);
assert(generic(p->op) == ASGN);
assert(p->kids[0]);
assert(p->kids[1]);
if (generic(p->kids[1]->kids[0]->op) == INDIR
&& sametree(p->kids[0], p->kids[1]->kids[0]->kids[0]))
return 3;
else
return LBURG_MAX;
}
int sametree(Node p, Node q) {
return p == NULL && q == NULL
|| p && q && p->op == q->op && p->syms[0] == q->syms[0]
&& sametree(p->kids[0], q->kids[0])
&& sametree(p->kids[1], q->kids[1]);
}
static void emit2(Node p) {
int op = specific(p->op);
#define preg(f) ((f)[getregnum(p->x.kids[0])]->x.name)
if (op == CVI+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movsx %s,%s\n", p->syms[RX]->x.name
, preg(charreg));
else if (op == CVI+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movsx %s,%s\n", p->syms[RX]->x.name
, preg(charreg));
else if (op == CVI+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movsx %s,%s\n", p->syms[RX]->x.name
, preg(shortreg));
else if (op == CVI+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movsx %s,%s\n", p->syms[RX]->x.name
, preg(shortreg));
else if (op == CVU+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movzx %s,%s\n", p->syms[RX]->x.name
, preg(charreg));
else if (op == CVU+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movzx %s,%s\n", p->syms[RX]->x.name
, preg(charreg));
else if (op == CVU+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movzx %s,%s\n", p->syms[RX]->x.name
, preg(shortreg));
else if (op == CVU+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movzx %s,%s\n", p->syms[RX]->x.name
, preg(shortreg));
else if (generic(op) == CVI || generic(op) == CVU || generic(op) == LOAD) {
char *dst = intreg[getregnum(p)]->x.name;
char *src = preg(intreg);
assert(opsize(p->op) <= opsize(p->x.kids[0]->op));
if (dst != src)
print("mov %s,%s\n", dst, src);
}
}
static void doarg(Node p) {
assert(p && p->syms[0]);
mkactual(4, p->syms[0]->u.c.v.i);
}
static void blkfetch(int k, int off, int reg, int tmp) {}
static void blkstore(int k, int off, int reg, int tmp) {}
static void blkloop(int dreg, int doff, int sreg, int soff,
int size, int tmps[]) {}
static void local(Symbol p) {
if (isfloat(p->type))
p->sclass = AUTO;
if (askregvar(p, (*IR->x.rmap)(ttob(p->type))) == 0)
mkauto(p);
}
static void function(Symbol f, Symbol caller[], Symbol callee[], int n) {
int i;
print("%s:\n", f->x.name);
print("push ebx\n");
print("push esi\n");
print("push edi\n");
print("push ebp\n");
print("mov ebp,esp\n");
usedmask[0] = usedmask[1] = 0;
freemask[0] = freemask[1] = ~(unsigned)0;
offset = 16 + 4;
for (i = 0; callee[i]; i++) {
Symbol p = callee[i];
Symbol q = caller[i];
assert(q);
p->x.offset = q->x.offset = offset;
p->x.name = q->x.name = stringf("%d", p->x.offset);
p->sclass = q->sclass = AUTO;
offset += roundup(q->type->size, 4);
}
assert(caller[i] == 0);
offset = maxoffset = 0;
gencode(caller, callee);
framesize = roundup(maxoffset, 4);
if (framesize > 0)
print("sub esp,%d\n", framesize);
emitcode();
print("mov esp,ebp\n");
print("pop ebp\n");
print("pop edi\n");
print("pop esi\n");
print("pop ebx\n");
print("ret\n");
}
static void defsymbol(Symbol p) {
if (p->scope >= LOCAL && p->sclass == STATIC)
p->x.name = stringf("L%d", genlabel(1));
else if (p->generated)
p->x.name = stringf("L%s", p->name);
else if (p->scope == GLOBAL || p->sclass == EXTERN)
p->x.name = stringf("_%s", p->name);
else if (p->scope == CONSTANTS
&& (isint(p->type) || isptr(p->type))
&& p->name[0] == '0' && p->name[1] == 'x')
p->x.name = stringf("0%sH", &p->name[2]);
else
p->x.name = p->name;
}
static void address(Symbol q, Symbol p, long n) {
if (p->scope == GLOBAL
|| p->sclass == STATIC || p->sclass == EXTERN)
q->x.name = stringf("%s%s%D",
p->x.name, n >= 0 ? "+" : "", n);
else {
assert(n <= INT_MAX && n >= INT_MIN);
q->x.offset = p->x.offset + n;
q->x.name = stringd(q->x.offset);
}
}
static void defconst(int suffix, int size, Value v) {
if (suffix == I && size == 1)
print("db %d\n", v.u);
else if (suffix == I && size == 2)
print("dw %d\n", v.i);
else if (suffix == I && size == 4)
print("dd %d\n", v.i);
else if (suffix == U && size == 1)
print("db 0%xH\n", v.u);
else if (suffix == U && size == 2)
print("dw 0%xH\n", v.u);
else if (suffix == U && size == 4)
print("dd 0%xH\n", v.u);
else if (suffix == P && size == 4)
print("dd 0%xH\n", v.p);
else if (suffix == F && size == 4) {
float f = v.d;
print("dd 0%xH\n", *(unsigned *)&f);
}
else if (suffix == F && size == 8) {
double d = v.d;
unsigned *p = (unsigned *)&d;
print("dd 0%xH\ndd 0%xH\n", p[swap], p[!swap]);
}
else assert(0);
}
static void defaddress(Symbol p) {
print("dd %s\n", p->x.name);
}
static void defstring(int n, char *str) {
char *s;
for (s = str; s < str + n; s++)
print("db %d\n", (*s)&0377);
}
static void export(Symbol p) {
print("public %s\n", p->x.name);
}
static void import(Symbol p) {
int oldseg = cseg;
if (p->ref > 0) {
segment(0);
print("extrn %s:near\n", p->x.name);
segment(oldseg);
}
}
static void global(Symbol p) {
print("align %d\n",
p->type->align > 4 ? 4 : p->type->align);
print("%s label byte\n", p->x.name);
if (p->u.seg == BSS)
print("db %d dup (0)\n", p->type->size);
}
static void space(int n) {
if (cseg != BSS)
print("db %d dup (0)\n", n);
}
Interface x86IR = {
1, 1, 0, /* char */
2, 2, 0, /* short */
4, 4, 0, /* int */
4, 4, 0, /* long */
4, 4, 0, /* long long */
4, 4, 1, /* float */
8, 4, 1, /* double */
8, 4, 1, /* long double */
4, 4, 0, /* T * */
0, 4, 0, /* struct; so that ARGB keeps stack aligned */
1, /* little_endian */
0, /* mulops_calls */
0, /* wants_callb */
1, /* wants_argb */
0, /* left_to_right */
0, /* wants_dag */
0, /* unsigned_char */
address,
blockbeg,
blockend,
defaddress,
defconst,
defstring,
defsymbol,
emit,
export,
function,
gen,
global,
import,
local,
progbeg,
progend,
segment,
space,
0, 0, 0, 0, 0, 0, 0,
{1, rmap,
blkfetch, blkstore, blkloop,
_label,
_rule,
_nts,
_kids,
_string,
_templates,
_isinstruction,
_ntname,
emit2,
doarg,
target,
clobber,
}
};
static char rcsid[] = "$Id: x86.md 145 2001-10-17 21:53:10Z timo $";
Reference in a new issue Copy permalink