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%{
/* x86/linux lburg spec. Derived from x86.md by
Marcos Ramirez <marcos@inf.utfsm.cl>
Horst von Brand <vonbrand@sleipnir.valparaiso.cl>
Jacob Navia <jacob@jacob.remcomp.fr>
*/
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)
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;
extern char *stabprefix;
extern void stabblock(int, int, Symbol*);
extern void stabend(Coordinate *, Symbol, Coordinate **, Symbol *, Symbol *);
extern void stabfend(Symbol, int);
extern void stabinit(char *, int, char *[]);
extern void stabline(Coordinate *);
extern void stabsym(Symbol);
extern void stabtype(Symbol);
static int pflag = 0;
static char rcsid[] = "$Id: x86linux.md,v 1.1 2002/08/28 23:12:48 drh Exp $";
#define hasargs(p) (p->syms[0] && p->syms[0]->u.c.v.i > 0 ? 0 : LBURG_MAX)
%}
%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: INDIRI4(VREGP) "# read register\n"
reg: INDIRP4(VREGP) "# read register\n"
reg: INDIRU4(VREGP) "# read register\n"
reg: INDIRI8(VREGP) "# read register\n"
reg: INDIRP8(VREGP) "# read register\n"
reg: INDIRU8(VREGP) "# read register\n"
freg: INDIRF4(VREGP) "# read register\n"
freg: INDIRF8(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"
cnst: CNSTI1 "%a"
cnst: CNSTU1 "%a"
cnst: CNSTI2 "%a"
cnst: CNSTU2 "%a"
cnst: CNSTI4 "%a"
cnst: CNSTU4 "%a"
cnst: CNSTP4 "%a"
cnst: CNSTI8 "%a"
cnst: CNSTU8 "%a"
cnst: CNSTP8 "%a"
con: cnst "$%0"
stmt: reg ""
stmt: freg ""
acon: ADDRGP4 "%a"
acon: ADDRGP8 "%a"
acon: cnst "%0"
baseaddr: 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"
index: LSHU4(reg,con1) "%0,2"
index: LSHU4(reg,con2) "%0,4"
index: LSHU4(reg,con3) "%0,8"
con0: CNSTI4 "1" range(a, 0, 0)
con0: CNSTU4 "1" range(a, 0, 0)
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)
addr: base "%0"
addr: baseaddr "%0"
addr: ADDI4(index,baseaddr) "%1(,%0)"
addr: ADDP4(index,baseaddr) "%1(,%0)"
addr: ADDU4(index,baseaddr) "%1(,%0)"
addr: ADDI4(reg,baseaddr) "%1(%0)"
addr: ADDP4(reg,baseaddr) "%1(%0)"
addr: ADDU4(reg,baseaddr) "%1(%0)"
addr: ADDI4(index,reg) "(%1,%0)"
addr: ADDP4(index,reg) "(%1,%0)"
addr: ADDU4(index,reg) "(%1,%0)"
addr: index "(,%0)"
mem1: INDIRI1(addr) "%0"
mem1: INDIRU1(addr) "%0"
mem2: INDIRI2(addr) "%0"
mem2: INDIRU2(addr) "%0"
mem4: INDIRI4(addr) "%0"
mem4: INDIRU4(addr) "%0"
mem4: INDIRP4(addr) "%0"
rc: reg "%0"
rc: con "%0"
mr: reg "%0"
mr: mem4 "%0"
mr1: reg "%0"
mr1: mem1 "%0"
mr2: reg "%0"
mr2: mem2 "%0"
mrc: mem4 "%0" 1
mrc: mem1 "%0" 1
mrc: mem2 "%0" 1
mrc: rc "%0"
reg: addr "leal %0,%c\n" 1
reg: mr "movl %0,%c\n" 1
reg: mr1 "movb %0,%c\n" 1
reg: mr2 "movw %0,%c\n" 1
reg: con "mov %0,%c\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,mrc) "?movl %0,%c\naddl %1,%c\n" 1
reg: ADDP4(reg,mrc) "?movl %0,%c\naddl %1,%c\n" 1
reg: ADDU4(reg,mrc) "?movl %0,%c\naddl %1,%c\n" 1
reg: SUBI4(reg,mrc) "?movl %0,%c\nsubl %1,%c\n" 1
reg: SUBP4(reg,mrc) "?movl %0,%c\nsubl %1,%c\n" 1
reg: SUBU4(reg,mrc) "?movl %0,%c\nsubl %1,%c\n" 1
reg: BANDI4(reg,mrc) "?movl %0,%c\nandl %1,%c\n" 1
reg: BORI4(reg,mrc) "?movl %0,%c\norl %1,%c\n" 1
reg: BXORI4(reg,mrc) "?movl %0,%c\nxorl %1,%c\n" 1
reg: BANDU4(reg,mrc) "?movl %0,%c\nandl %1,%c\n" 1
reg: BORU4(reg,mrc) "?movl %0,%c\norl %1,%c\n" 1
reg: BXORU4(reg,mrc) "?movl %0,%c\nxorl %1,%c\n" 1
stmt: ASGNI4(addr,ADDI4(mem4,con1)) "incl %1\n" memop(a)
stmt: ASGNI4(addr,ADDU4(mem4,con1)) "incl %1\n" memop(a)
stmt: ASGNP4(addr,ADDP4(mem4,con1)) "incl %1\n" memop(a)
stmt: ASGNI4(addr,SUBI4(mem4,con1)) "decl %1\n" memop(a)
stmt: ASGNI4(addr,SUBU4(mem4,con1)) "decl %1\n" memop(a)
stmt: ASGNP4(addr,SUBP4(mem4,con1)) "decl %1\n" memop(a)
stmt: ASGNI4(addr,ADDI4(mem4,rc)) "addl %2,%1\n" memop(a)
stmt: ASGNI4(addr,SUBI4(mem4,rc)) "subl %2,%1\n" memop(a)
stmt: ASGNU4(addr,ADDU4(mem4,rc)) "addl %2,%1\n" memop(a)
stmt: ASGNU4(addr,SUBU4(mem4,rc)) "subl %2,%1\n" memop(a)
stmt: ASGNI4(addr,BANDI4(mem4,rc)) "andl %2,%1\n" memop(a)
stmt: ASGNI4(addr,BORI4(mem4,rc)) "orl %2,%1\n" memop(a)
stmt: ASGNI4(addr,BXORI4(mem4,rc)) "xorl %2,%1\n" memop(a)
stmt: ASGNU4(addr,BANDU4(mem4,rc)) "andl %2,%1\n" memop(a)
stmt: ASGNU4(addr,BORU4(mem4,rc)) "orl %2,%1\n" memop(a)
stmt: ASGNU4(addr,BXORU4(mem4,rc)) "xorl %2,%1\n" memop(a)
reg: BCOMI4(reg) "?movl %0,%c\nnotl %c\n" 2
reg: BCOMU4(reg) "?movl %0,%c\nnotl %c\n" 2
reg: NEGI4(reg) "?movl %0,%c\nnegl %c\n" 2
stmt: ASGNI4(addr,BCOMI4(mem4)) "notl %1\n" memop(a)
stmt: ASGNU4(addr,BCOMU4(mem4)) "notl %1\n" memop(a)
stmt: ASGNI4(addr,NEGI4(mem4)) "negl %1\n" memop(a)
reg: LSHI4(reg,rc5) "?movl %0,%c\nsall %1,%c\n" 2
reg: LSHU4(reg,rc5) "?movl %0,%c\nshll %1,%c\n" 2
reg: RSHI4(reg,rc5) "?movl %0,%c\nsarl %1,%c\n" 2
reg: RSHU4(reg,rc5) "?movl %0,%c\nshrl %1,%c\n" 2
stmt: ASGNI4(addr,LSHI4(mem4,rc5)) "sall %2,%1\n" memop(a)
stmt: ASGNI4(addr,LSHU4(mem4,rc5)) "shll %2,%1\n" memop(a)
stmt: ASGNI4(addr,RSHI4(mem4,rc5)) "sarl %2,%1\n" memop(a)
stmt: ASGNI4(addr,RSHU4(mem4,rc5)) "shrl %2,%1\n" memop(a)
rc5: CNSTI4 "$%a" range(a, 0, 31)
rc5: reg "%%cl"
reg: MULI4(reg,mrc) "?movl %0,%c\nimull %1,%c\n" 14
reg: MULI4(con,mr) "imul %0,%1,%c\n" 13
reg: MULU4(reg,mr) "mull %1\n" 13
reg: DIVU4(reg,reg) "xorl %%edx,%%edx\ndivl %1\n"
reg: MODU4(reg,reg) "xorl %%edx,%%edx\ndivl %1\n"
reg: DIVI4(reg,reg) "cdq\nidivl %1\n"
reg: MODI4(reg,reg) "cdq\nidivl %1\n"
reg: CVPU4(reg) "movl %0,%c\n" move(a)
reg: CVUP4(reg) "movl %0,%c\n" move(a)
reg: CVII4(INDIRI1(addr)) "movsbl %0,%c\n" 3
reg: CVII4(INDIRI2(addr)) "movswl %0,%c\n" 3
reg: CVUU4(INDIRU1(addr)) "movzbl %0,%c\n" 3
reg: CVUU4(INDIRU2(addr)) "movzwl %0,%c\n" 3
reg: CVII4(reg) "# extend\n" 3
reg: CVIU4(reg) "# extend\n" 3
reg: CVUI4(reg) "# extend\n" 3
reg: CVUU4(reg) "# extend\n" 3
reg: CVII1(reg) "# truncate\n" 1
reg: CVII2(reg) "# truncate\n" 1
reg: CVUU1(reg) "# truncate\n" 1
reg: CVUU2(reg) "# truncate\n" 1
mrca: mem4 "%0"
mrca: rc "%0"
mrca: ADDRGP4 "$%a"
mrca: ADDRGP8 "$%a"
stmt: ASGNI1(addr,rc) "movb %1,%0\n" 1
stmt: ASGNI2(addr,rc) "movw %1,%0\n" 1
stmt: ASGNI4(addr,rc) "movl %1,%0\n" 1
stmt: ASGNU1(addr,rc) "movb %1,%0\n" 1
stmt: ASGNU2(addr,rc) "movw %1,%0\n" 1
stmt: ASGNU4(addr,rc) "movl %1,%0\n" 1
stmt: ASGNP4(addr,rc) "movl %1,%0\n" 1
stmt: ARGI4(mrca) "pushl %0\n" 1
stmt: ARGU4(mrca) "pushl %0\n" 1
stmt: ARGP4(mrca) "pushl %0\n" 1
stmt: ASGNB(reg,INDIRB(reg)) "movl $%a,%%ecx\nrep\nmovsb\n"
stmt: ARGB(INDIRB(reg)) "# ARGB\n"
memf: INDIRF8(addr) "l %0"
memf: INDIRF4(addr) "s %0"
memf: CVFF8(INDIRF4(addr)) "s %0"
memf: CVFF4(INDIRF8(addr)) "l %0"
freg: memf "fld%0\n" 3
stmt: ASGNF8(addr,freg) "fstpl %0\n" 7
stmt: ASGNF4(addr,freg) "fstps %0\n" 7
stmt: ASGNF4(addr,CVFF4(freg)) "fstps %0\n" 7
stmt: ARGF8(freg) "subl $8,%%esp\nfstpl (%%esp)\n"
stmt: ARGF4(freg) "subl $4,%%esp\nfstps (%%esp)\n"
freg: NEGF8(freg) "fchs\n"
freg: NEGF4(freg) "fchs\n"
flt: memf "%0"
flt: freg "p %%st,%%st(1)"
flt2: memf "%0"
flt2: freg "rp %%st,%%st(1)"
freg: ADDF4(freg,flt) "fadd%1\n"
freg: ADDF8(freg,flt) "fadd%1\n"
freg: DIVF4(freg,flt2) "fdiv%1\n"
freg: DIVF8(freg,flt2) "fdiv%1\n"
freg: MULF4(freg,flt) "fmul%1\n"
freg: MULF8(freg,flt) "fmul%1\n"
freg: SUBF4(freg,flt2) "fsub%1\n"
freg: SUBF8(freg,flt2) "fsub%1\n"
freg: CVFF8(freg) "# CVFF8\n"
freg: CVFF4(freg) "sub $4,%%esp\nfstps (%%esp)\nflds (%%esp)\naddl $4,%%esp\n" 12
reg: CVFI4(freg) "subl $8,%%esp\nfnstcw 4(%%esp)\nmovl 4(%%esp),%%edx\nmovb $12,%%dh\nmovl %%edx,0(%%esp)\nfldcw 0(%%esp)\nfistpl 0(%%esp)\npopl %c\nfldcw 0(%%esp)\naddl $4,%%esp\n" 31
freg: CVIF8(INDIRI4(addr)) "fildl %0\n" 10
freg: CVIF8(reg) "pushl %0\nfildl (%%esp)\naddl $4,%%esp\n" 12
freg: CVIF4(INDIRI4(addr)) "fildl %0\n" 10
freg: CVIF4(reg) "pushl %0\nfildl (%%esp)\naddl $4,%%esp\n" 12
addrj: ADDRGP4 "%a"
addrj: reg "*%0" 2
addrj: mem4 "*%0" 2
stmt: LABELV "%a:\n"
stmt: JUMPV(addrj) "jmp %0\n" 3
stmt: EQI4(mem4,rc) "cmpl %1,%0\nje %a\n" 5
stmt: GEI4(mem4,rc) "cmpl %1,%0\njge %a\n" 5
stmt: GTI4(mem4,rc) "cmpl %1,%0\njg %a\n" 5
stmt: LEI4(mem4,rc) "cmpl %1,%0\njle %a\n" 5
stmt: LTI4(mem4,rc) "cmpl %1,%0\njl %a\n" 5
stmt: NEI4(mem4,rc) "cmpl %1,%0\njne %a\n" 5
stmt: GEU4(mem4,rc) "cmpl %1,%0\njae %a\n" 5
stmt: GTU4(mem4,rc) "cmpl %1,%0\nja %a\n" 5
stmt: LEU4(mem4,rc) "cmpl %1,%0\njbe %a\n" 5
stmt: LTU4(mem4,rc) "cmpl %1,%0\njb %a\n" 5
stmt: EQI4(reg,mrc) "cmpl %1,%0\nje %a\n" 4
stmt: GEI4(reg,mrc) "cmpl %1,%0\njge %a\n" 4
stmt: GTI4(reg,mrc) "cmpl %1,%0\njg %a\n" 4
stmt: LEI4(reg,mrc) "cmpl %1,%0\njle %a\n" 4
stmt: LTI4(reg,mrc) "cmpl %1,%0\njl %a\n" 4
stmt: NEI4(reg,mrc) "cmpl %1,%0\njne %a\n" 4
stmt: EQU4(reg,mrc) "cmpl %1,%0\nje %a\n" 4
stmt: GEU4(reg,mrc) "cmpl %1,%0\njae %a\n" 4
stmt: GTU4(reg,mrc) "cmpl %1,%0\nja %a\n" 4
stmt: LEU4(reg,mrc) "cmpl %1,%0\njbe %a\n" 4
stmt: LTU4(reg,mrc) "cmpl %1,%0\njb %a\n" 4
stmt: NEU4(reg,mrc) "cmpl %1,%0\njne %a\n" 4
stmt: EQI4(BANDU4(mr,con),con0) "testl %1,%0\nje %a\n" 3
stmt: NEI4(BANDU4(mr,con),con0) "testl %1,%0\njne %a\n"
stmt: EQI4(BANDU4(CVII2(INDIRI2(addr)),con),con0) "testw %1,%0\nje %a\n"
stmt: NEI4(BANDU4(CVII2(INDIRI2(addr)),con),con0) "testw %1,%0\njne %a\n"
stmt: EQI4(BANDU4(CVIU2(INDIRI2(addr)),con),con0) "testw %1,%0\nje %a\n"
stmt: NEI4(BANDU4(CVIU2(INDIRI2(addr)),con),con0) "testw %1,%0\njne %a\n"
stmt: EQI4(BANDU4(CVII1(INDIRI1(addr)),con),con0) "testb %1,%0\nje %a\n"
cmpf: INDIRF8(addr) "l %0"
cmpf: INDIRF4(addr) "s %0"
cmpf: CVFF8(INDIRF4(addr)) "s %0"
cmpf: freg "p"
stmt: EQF8(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp 1f\nje %a\n1:\n"
stmt: GEF8(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njbe %a\n"
stmt: GTF8(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njb %a\n"
stmt: LEF8(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njae %a\n"
stmt: LTF8(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\nja %a\n"
stmt: NEF8(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njne %a\n"
stmt: EQF4(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp 1f\nje %a\n1:\n"
stmt: GEF4(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njbe %a\n"
stmt: GTF4(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njb %a\n"
stmt: LEF4(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njae %a\n"
stmt: LTF4(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\nja %a\n"
stmt: NEF4(cmpf,freg) "fcomp%0\nfstsw %%ax\nsahf\njp %a\njne %a\n"
freg: DIVF8(freg,CVIF8(INDIRI4(addr))) "fidivl %1\n"
freg: DIVF8(CVIF8(INDIRI4(addr)),freg) "fidivrl %0\n"
freg: DIVF8(freg,CVIF8(CVII2(INDIRI2(addr)))) "fidivs %1\n"
freg: DIVF8(CVIF8(CVII2(INDIRI2(addr))),freg) "fidivrs %0\n"
freg: MULF8(freg,CVIF8(INDIRI4(addr))) "fimull %1\n"
freg: MULF8(freg,CVIF8(CVII2(INDIRI2(addr)))) "fimuls %1\n"
freg: SUBF8(freg,CVIF8(INDIRI4(addr))) "fisubl %1\n"
freg: SUBF8(CVIF8(INDIRI4(addr)),freg) "fisubrl %0\n"
freg: SUBF8(freg,CVIF8(CVII2(INDIRI2(addr)))) "fisubs %1\n"
freg: SUBF8(CVIF8(CVII2(INDIRI2(addr))),freg) "fisubrs %0\n"
freg: ADDF8(freg,CVIF8(INDIRI4(addr))) "fiaddl %1\n"
freg: ADDF8(freg,CVIF8(CVII2(INDIRI2(addr)))) "fiadds %1\n"
freg: ADDF8(freg,CVFF8(INDIRF4(addr))) "fdivs %1\n"
freg: SUBF8(freg,CVFF8(INDIRF4(addr))) "fsubs %1\n"
freg: MULF8(freg,CVFF8(INDIRF4(addr))) "fmuls %1\n"
freg: DIVF8(freg,CVFF8(INDIRF4(addr))) "fdivs %1\n"
freg: LOADF8(memf) "fld%0\n"
reg: CALLI4(addrj) "call %0\naddl $%a,%%esp\n" hasargs(a)
reg: CALLU4(addrj) "call %0\naddl $%a,%%esp\n" hasargs(a)
reg: CALLP4(addrj) "call %0\naddl $%a,%%esp\n" hasargs(a)
reg: CALLI4(addrj) "call %0\n" 1
reg: CALLU4(addrj) "call %0\n" 1
reg: CALLP4(addrj) "call %0\n" 1
stmt: CALLV(addrj) "call %0\naddl $%a,%%esp\n" hasargs(a)
stmt: CALLV(addrj) "call %0\n" 1
freg: CALLF4(addrj) "call %0\naddl $%a,%%esp\n" hasargs(a)
freg: CALLF4(addrj) "call %0\n" 1
stmt: CALLF4(addrj) "call %0\naddl $%a,%%esp\nfstp %%st(0)\n" hasargs(a)
stmt: CALLF4(addrj) "call %0\nfstp %%st(0)\n" 1
freg: CALLF8(addrj) "call %0\naddl $%a,%%esp\n" hasargs(a)
freg: CALLF8(addrj) "call %0\n" 1
stmt: CALLF8(addrj) "call %0\naddl $%a,%%esp\nfstp %%st(0)\n" hasargs(a)
stmt: CALLF8(addrj) "call %0\nfstp %%st(0)\n" 1
stmt: RETI4(reg) "# ret\n"
stmt: RETU4(reg) "# ret\n"
stmt: RETP4(reg) "# ret\n"
stmt: RETF4(freg) "# ret\n"
stmt: RETF8(freg) "# ret\n"
%%
static void progbeg(int argc, char *argv[]) {
int i;
extern Interface x86IR, x86linuxIR;
#define xx(f) assert(!x86linuxIR.f); x86linuxIR.f = x86IR.f
xx(address);
xx(local);
xx(x.blkfetch);
xx(x.blkstore);
xx(x.blkloop);
xx(x.doarg);
#undef xx
{
union {
char c;
int i;
} u;
u.i = 0;
u.c = 1;
swap = ((int)(u.i == 1)) != IR->little_endian;
}
parseflags(argc, argv);
for (i = 0; i < argc; i++)
if (strcmp(argv[i], "-p") == 0 || strcmp(argv[i], "-pg") == 0)
pflag = 1;
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;
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;
stabprefix = ".LL";
}
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 Symbol prevg;
static void globalend(void) {
if (prevg && prevg->type->size > 0)
print(".size %s,%d\n", prevg->x.name, prevg->type->size);
prevg = NULL;
}
static void progend(void) {
globalend();
(*IR->segment)(CODE);
print(".ident \"LCC: 4.1\"\n");
}
static void target(Node p) {
assert(p);
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)) {
rtarget(p, 1, intreg[ECX]);
setreg(p, intreg[EAX]);
}
break;
case MUL+U:
setreg(p, quo);
rtarget(p, 0, intreg[EAX]);
break;
case DIV+I: case DIV+U:
setreg(p, quo);
rtarget(p, 0, intreg[EAX]);
rtarget(p, 1, intreg[ECX]);
break;
case MOD+I: case MOD+U:
setreg(p, rem);
rtarget(p, 0, intreg[EAX]);
rtarget(p, 1, intreg[ECX]);
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 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 CVF+I:
spill(1<<EDX, 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;
}
}
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("movsbl %s,%s\n", preg(charreg), p->syms[RX]->x.name);
else if (op == CVI+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movsbl %s,%s\n", preg(charreg), p->syms[RX]->x.name);
else if (op == CVI+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movswl %s,%s\n", preg(shortreg), p->syms[RX]->x.name);
else if (op == CVI+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movswl %s,%s\n", preg(shortreg), p->syms[RX]->x.name);
else if (op == CVU+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movzbl %s,%s\n", preg(charreg), p->syms[RX]->x.name);
else if (op == CVU+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 1)
print("movzbl %s,%s\n", preg(charreg), p->syms[RX]->x.name);
else if (op == CVU+I && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movzwl %s,%s\n", preg(shortreg), p->syms[RX]->x.name);
else if (op == CVU+U && opsize(p->op) == 4 && opsize(p->x.kids[0]->op) == 2)
print("movzwl %s,%s\n", preg(shortreg), p->syms[RX]->x.name);
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("movl %s,%s\n", src, dst);
} else if (op == ARG+B)
print("subl $%d,%%esp\nmovl %%esp,%%edi\nmovl $%d,%%ecx\nrep\nmovsb\n",
roundup(p->syms[0]->u.c.v.i, 4), p->syms[0]->u.c.v.i);
}
static void function(Symbol f, Symbol caller[], Symbol callee[], int n) {
int i;
globalend();
print(".align 16\n");
print(".type %s,@function\n", f->x.name);
print("%s:\n", f->x.name);
print("pushl %%ebp\n");
if (pflag) {
static int plab;
print("movl %%esp,%%ebp\n");
(*IR->segment)(DATA);
print(".align 4\n.LP%d:\n.long 0\n", plab);
(*IR->segment)(CODE);
print("movl $.LP%d,%%edx\ncall mcount\n", plab);
plab++;
}
print("pushl %%ebx\n");
print("pushl %%esi\n");
print("pushl %%edi\n");
print("movl %%esp,%%ebp\n");
usedmask[0] = usedmask[1] = 0;
freemask[0] = freemask[1] = ~0U;
offset = 16 + 4;
for (i = 0; callee[i]; i++) {
Symbol p = callee[i];
Symbol q = caller[i];
assert(q);
offset = roundup(offset, q->type->align);
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("subl $%d,%%esp\n", framesize);
emitcode();
print("movl %%ebp,%%esp\n");
print("popl %%edi\n");
print("popl %%esi\n");
print("popl %%ebx\n");
print("popl %%ebp\n");
print("ret\n");
{ int l = genlabel(1);
print(".Lf%d:\n", l);
print(".size %s,.Lf%d-%s\n", f->x.name, l, f->x.name);
}
}
static void defsymbol(Symbol p) {
if (p->scope >= LOCAL && p->sclass == STATIC)
p->x.name = stringf("%s.%d", p->name, genlabel(1));
else if (p->generated)
p->x.name = stringf(".LC%s", p->name);
else if (p->scope == GLOBAL || p->sclass == EXTERN)
p->x.name = stringf("%s", p->name);
else
p->x.name = p->name;
}
static void segment(int n) {
if (n == cseg)
return;
cseg = n;
if (cseg == CODE)
print(".text\n");
else if (cseg == BSS)
print(".bss\n");
else if (cseg == DATA || cseg == LIT)
print(".data\n");
}
static void defconst(int suffix, int size, Value v) {
if (suffix == I && size == 1)
print(".byte %d\n", (int)v.u);
else if (suffix == I && size == 2)
print(".word %d\n", (int)v.i);
else if (suffix == I && size == 4)
print(".long %d\n", (int)v.i);
else if (suffix == U && size == 1)
print(".byte %d\n", (int)((char)v.u));
else if (suffix == U && size == 2)
print(".word %d\n", (int)v.u);
else if (suffix == U && size == 4)
print(".long %d\n", (int)v.u);
else if (suffix == P && size == 4)
print(".long %ld\n", (long)v.p);
else if (suffix == F && size == 4) {
float f = v.d;
print(".long %d\n", (int)(*(unsigned *)&f));
} else if (suffix == F && size == 8) {
double d = v.d;
unsigned *p = (unsigned *)&d;
print(".long %d\n.long %d\n", (int)p[swap], (int)p[!swap]);
}
else assert(0);
}
static void defaddress(Symbol p) {
print(".long %s\n", p->x.name);
}
static void defstring(int n, char *str) {
char *s;
for (s = str; s < str + n; s++)
print(".byte %d\n", (*s)&0377);
}
static void export(Symbol p) {
globalend();
print(".globl %s\n", p->x.name);
}
static void import(Symbol p) {}
static void global(Symbol p) {
globalend();
print(".align %d\n", p->type->align > 4 ? 4 : p->type->align);
if (!p->generated) {
print(".type %s,@%s\n", p->x.name,
isfunc(p->type) ? "function" : "object");
if (p->type->size > 0)
print(".size %s,%d\n", p->x.name, p->type->size);
else
prevg = p;
}
if (p->u.seg == BSS) {
if (p->sclass == STATIC)
print(".lcomm %s,%d\n", p->x.name, p->type->size);
else
print(".comm %s,%d\n", p->x.name, p->type->size);
} else {
print("%s:\n", p->x.name);
}
}
static void space(int n) {
if (cseg != BSS)
print(".space %d\n", n);
}
Interface x86linuxIR = {
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, 1, 0, /* struct */
1, /* little_endian */
0, /* mulops_calls */
0, /* wants_callb */
1, /* wants_argb */
0, /* left_to_right */
0, /* wants_dag */
0, /* unsigned_char */
0, /* address */
blockbeg,
blockend,
defaddress,
defconst,
defstring,
defsymbol,
emit,
export,
function,
gen,
global,
import,
0, /* local */
progbeg,
progend,
segment,
space,
stabblock, stabend, 0, stabinit, stabline, stabsym, stabtype,
{1, rmap,
0, 0, 0, /* blkfetch, blkstore, blkloop */
_label,
_rule,
_nts,
_kids,
_string,
_templates,
_isinstruction,
_ntname,
emit2,
0, /* doarg */
target,
clobber,
}
};
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