win32.md

window下的c编译器。

mrw:   reg  "%0"
mrw:   memw  "%0"

mrc: mem  "%0"  1
mrc: memb  "%0"  1
mrc: memw  "%0"  1
mrc: rc   "%0"

reg: addr		"\tleal\t%0,%c\n"			5
reg: mr			"\tmovl\t%0,%c\n"			1
reg: mrb		"\tmovb\t%0,%c\n"			1
reg: mrw		"\tmovw\t%0,%c\n"			1
reg: con		"\tmovl\t%0,%c\n"			1
reg: LOADC(reg)		"\tmovb\t%0,%c\n"			move(a)
reg: LOADI(reg)		"\tmovl\t%0,%c\n"			move(a)
reg: LOADP(reg)		"\tmovl\t%0,%c\n"			move(a)
reg: LOADS(reg)		"\tmovw\t%0,%c\n"			move(a)
reg: LOADU(reg)		"\tmovl\t%0,%c\n"			move(a)
reg: ADDI(reg,mrc)	"?\tmovl\t%0,%c\n\taddl\t%1,%c\n"	1
reg: ADDP(reg,mrc)	"?\tmovl\t%0,%c\n\taddl\t%1,%c\n"	1
reg: ADDU(reg,mrc)	"?\tmovl\t%0,%c\n\taddl\t%1,%c\n"	1
reg: SUBI(reg,mrc)	"?\tmovl\t%0,%c\n\tsubl\t%1,%c\n"	1	
reg: SUBP(reg,mrc)	"?\tmovl\t%0,%c\n\tsubl\t%1,%c\n"	1
reg: SUBU(reg,mrc)	"?\tmovl\t%0,%c\n\tsubl\t%1,%c\n"	1
reg: BANDU(reg,mrc)	"?\tmovl\t%0,%c\n\tandl\t%1,%c\n"	1
reg: BORU(reg,mrc)	"?\tmovl\t%0,%c\n\torl\t%1,%c\n"	1

reg: BXORU(reg,mrc)	"?\tmovl\t%0,%c\n\txorl\t%1,%c\n"	1
reg: LSHI(reg,rc5)	"?\tmovl\t%0,%c\n\tsall\t%1,%c\n"	2
reg: LSHI(con,rc5)	"\tmovl\t%0,%c\n\tsall\t%1,%c\n"	2
reg: LSHU(reg,rc5)	"?\tmovl\t%0,%c\n\tshll\t%1,%c\n"	3
reg: LSHU(con,rc5)	"\tmovl\t%0,%c\n\tshll\t%1,%c\n"	2
reg: RSHI(reg,rc5)	"?\tmovl\t%0,%c\n\tsarl\t%1,%c\n"	2
reg: RSHU(reg,rc5)	"?\tmovl\t%0,%c\n\tshrl\t%1,%c\n"	2
reg: BCOMU(reg)		"?\tmovl\t%0,%c\n\tnotl\t%c\n"		2
reg: NEGI(reg)		"?\tmovl\t%0,%c\n\tnegl\t%c\n"		2

stmt: ASGNI(addr,ADDI(mem,con1)) "\tincl\t%1\n"		memop(a)
stmt: ASGNI(addr,ADDU(mem,con1)) "\tincl\t%1\n"		memop(a)
stmt: ASGNI(addr,ADDU(mem,rc))	"\taddl\t%2,%1\n" 	memop(a)
stmt: ASGNP(addr,ADDP(mem,con1)) "\tincl\t%1\n"		memop(a)
stmt: ASGNI(addr,SUBI(mem,con1)) "\tdecl\t%1\n"		memop(a)
stmt: ASGNI(addr,SUBI(mem,rc))	"\tsubl\t%2,%1\n"	memop(a)
stmt: ASGNI(addr,SUBU(mem,con1)) "\tdecl\t%1\n"		memop(a)
stmt: ASGNI(addr,SUBU(mem,rc))	"\tsubl\t%2,%1\n"	memop(a)
stmt: ASGNP(addr,SUBP(mem,con1))"\tdecl\t%1\n"		memop(a)
stmt: ASGNI(addr,ADDI(mem,rc))	"\taddl\t%2,%1\n"	memop(a)

stmt: ASGNI(addr,BANDU(mem,rc))	"\tandl\t%2,%1\n"  	memop(a)
stmt: ASGNI(addr,BORU(mem,rc))	"\torl\t%2,%1\n"	1+memop(a)

stmt: ASGNI(addr,BXORU(mem,rc))	"\txorl\t%2,%1\n" 	memop(a)
stmt: ASGNI(addr,BCOMU(mem))	"\tnotl\t%1\n"		memop(a)
stmt: ASGNI(addr,NEGI(mem))	"\tnegl\t%1\n"  	memop(a)
stmt: ASGNI(addr,LSHI(mem,rc5))	"\tsall\t%2,%1\n"	memop(a)
stmt: ASGNI(addr,LSHU(mem,rc5))	"\tshll\t%2,%1\n"	memop(a)
stmt: ASGNI(addr,RSHI(mem,rc5))	"\tsarl\t%2,%1\n"	memop(a)
stmt: ASGNI(addr,RSHU(mem,rc5))	"\tshrl\t%2,%1\n"	memop(a)

reg: MULI(reg,mrc)	"?\tmovl\t%0,%c\n\timull\t%1,%c\n"  14
reg: MULI(con,mr)	"\timul\t%0,%1,%c\n"	13
reg: MULU(reg,mr)	"\tmull\t%1\n"		13
reg: DIVU(reg,reg)	"\txorl\t%%edx,%%edx\n\tdivl\t%1\n"
reg: MODU(reg,reg)	"\txorl\t%%edx,%%edx\n\tdivl\t%1\n"
reg: DIVI(reg,reg)	"\tcdq\n\tidivl\t%1\n"
reg: MODI(reg,reg)	"\tcdq\n\tidivl\t%1\n"
;;
;; This type conversions have been discontinued
;;
;;reg: CVIU(reg)		"\tmovl\t%0,%c\n"	move(a)
;;reg: CVPU(reg)		"\tmovl\t%0,%c\n"	move(a)
;;reg: CVUI(reg)		"\tmovl\t%0,%c\n"	move(a)
;;reg: CVUP(reg)		"\tmovl\t%0,%c\n"	move(a)
;;
reg: CVCI(INDIRC(addr))	"\tmovsbl\t%0,%c\n"	3
reg: CVCU(INDIRC(addr))	"\tmovzbl\t%0,%c\n"	3
reg: CVSI(INDIRS(addr))	"\tmovswl\t%0,%c\n"	3
reg: CVSU(INDIRS(addr))	"\tmovzwl\t%0,%c\n"	3

reg: CVCI(reg)  "# extend\n"  3
reg: CVCU(reg)  "# extend\n"  3
reg: CVSI(reg)  "# extend\n"  3
reg: CVSU(reg)  "# extend\n"  3
reg: CVIC(reg)  "# truncate\n"  1
reg: CVIS(reg)  "# truncate\n"  1
reg: CVUC(reg)  "# truncate\n"  1
reg: CVUS(reg)  "# truncate\n"  1

mrca: mem  "%0"
mrca: rc   "%0"
mrca: ADDRGP "$%a"

stmt: ASGNC(addr,rc)	"\tmovb\t%1,%0\n"	1
stmt: ASGNI(addr,rc)	"\tmovl\t%1,%0\n"	1
stmt: ASGNP(addr,rc)	"\tmovl\t%1,%0\n"	1
stmt: ASGNS(addr,rc)	"\tmovw\t%1,%0\n"	1
stmt: ASGNB(reg,INDIRB(reg)) "\tmovl\t$%a,%%ecx\n\trep\n\tmovsb\n"
stmt: ARGI(mrca)	"\tpushl\t%0\n"  1
stmt: ARGP(mrca)	"\tpushl\t%0\n"  1
stmt: ARGB(INDIRB(reg)) "\tsubl\t$%a,%%esp\n\tmovl\t%%esp,%%edi\n\tmovl\t$%b,%%ecx\n\trep\n\tmovsb\n"

memf: INDIRD(addr)		"l\t%0"
memf: INDIRF(addr)		"s\t%0"
memf: CVFD(INDIRF(addr))	"s\t%0"
freg: memf			"\tfld%0\n"		3
stmt: ASGND(addr,freg)		"\tfstpl\t%0\n"  7
stmt: ASGNF(addr,freg)		"\tfstps\t%0\n"  7
stmt: ASGNF(addr,CVDF(freg))	"\tfstps\t%0\n"  7
stmt: ARGD(freg)		"\tsubl\t$8,%%esp\n\tfstpl\t(%%esp)\n"
stmt: ARGF(freg)		"\tsubl\t$4,%%esp\n\tfstps\t(%%esp)\n"
freg: NEGD(freg)		"\tfchs\n"
freg: NEGF(freg)		"\tfchs\n"

flt: memf	"%0"
flt: freg	"p\t%%st,%%st(1)"

freg: ADDD(freg,flt)	"\tfadd%1\n"
freg: ADDF(freg,flt)	"\tfadd%1\n"
freg: DIVD(freg,memf)	"\tfdiv%1\n"
freg: DIVD(freg,freg)	"\tfdivrp\t%%st,%%st(1)\n" 
freg: DIVF(freg,memf)	"\tfdiv%1\n"
freg: DIVF(freg,freg)	"\tfdivrp\t%%st,%%st(1)\n"
freg: MULD(freg,flt)	"\tfmul%1\n"
freg: MULF(freg,flt)	"\tfmul%1\n"
freg: SUBD(freg,memf)	"\tfsub%1\n"
freg: SUBD(freg,freg)	"\tfsubrp\t%%st,%%st(1)\n"
freg: SUBF(freg,memf)	"\tfsub%1\n"
freg: SUBF(freg,freg)	"\tfsubrp\t%%st,%%st(1)\n"
freg: CVFD(freg)  "# CVFD\n"
freg: CVDF(freg)  "\tsub\t$4,%%esp\n\tfstps (%%esp)\n\tflds (%%esp)\n\taddl $4,%%esp\n"  12

;;stmt: ASGNI(addr,CVDI(freg))  "\tpush\t%%eax\n\t.extern\t__ftol\n\tcall\t__ftol\n\tmovl\t%%eax,%0\n\tpop\t%%eax\n"  29
reg: CVDI(freg)  "\txchg\t%%eax,%c\n\t.extern\t__ftol\n\tcall\t__ftol\n\txchg\t%%eax,%c\n" 31

freg: CVID(INDIRI(addr))  "\tfildl\t%0\n"  10
freg: CVUD(INDIRI(addr))  "\tpush\t$0\n\tpush\t%0\n\tfildq\t(%%esp)\n\taddl\t$8,%%esp\n"
freg: CVID(reg)  "\tpushl\t%0\n\tfildl\t(%%esp)\n\taddl\t$4,%%esp\n"  12
freg: CVUD(reg)  "\tpushl\t$0\n\tpushl\t%0\n\tfildq\t(%%esp)\n\taddl\t$8,%%esp\n"

addrj: ADDRGP  "%a"
addrj: reg     "*%0"  2
addrj: mem     "*%0"  2

addrjmp: ADDRGP  "%a"
addrjmp: reg     "*%0"  2
addrjmp: mem     "*%0"  2

stmt: LABELV		"%a:\n"
stmt: JUMPV(addrjmp)	"\tjmp\t%0\n"  3
stmt: EQI(mem,rc)	"\tcmpl\t%1,%0\n\tje\t%a\n"   5
stmt: GEI(mem,rc)	"\tcmpl\t%1,%0\n\tjge\t%a\n"  5
stmt: GTI(mem,rc)	"\tcmpl\t%1,%0\n\tjg\t%a\n"   5
stmt: LEI(mem,rc)	"\tcmpl\t%1,%0\n\tjle\t%a\n"  5
stmt: LTI(mem,rc)	"\tcmpl\t%1,%0\n\tjl\t%a\n"   5
stmt: NEI(mem,rc)	"\tcmpl\t%1,%0\n\tjne\t%a\n"  5
stmt: GEU(mem,rc)	"\tcmpl\t%1,%0\n\tjae\t%a\n"  5
stmt: GTU(mem,rc)	"\tcmpl\t%1,%0\n\tja \t%a\n"  5
stmt: LEU(mem,rc)	"\tcmpl\t%1,%0\n\tjbe\t%a\n"  5
stmt: LTU(mem,rc)	"\tcmpl\t%1,%0\n\tjb \t%a\n"  5
stmt: EQI(reg,mrc)	"\tcmpl\t%1,%0\n\tje\t%a\n"   4
stmt: GEI(reg,mrc)	"\tcmpl\t%1,%0\n\tjge\t%a\n"  4
stmt: GTI(reg,mrc)	"\tcmpl\t%1,%0\n\tjg\t%a\n"   4
stmt: LEI(reg,mrc)	"\tcmpl\t%1,%0\n\tjle\t%a\n"  4
stmt: LTI(reg,mrc)	"\tcmpl\t%1,%0\n\tjl\t%a\n"   4
stmt: NEI(reg,mrc)	"\tcmpl\t%1,%0\n\tjne\t%a\n"  4

stmt: GEU(reg,mrc)	"\tcmpl\t%1,%0\n\tjae\t%a\n"  4
stmt: GTU(reg,mrc)	"\tcmpl\t%1,%0\n\tja \t%a\n"  4
stmt: LEU(reg,mrc)	"\tcmpl\t%1,%0\n\tjbe\t%a\n"  4
stmt: LTU(reg,mrc)	"\tcmpl\t%1,%0\n\tjb \t%a\n"  4

cmpf: INDIRD(addr)		"l\t%0"
cmpf: INDIRF(addr)		"s\t%0"
cmpf: CVFD(INDIRF(addr))	"s\t%0"
cmpf: freg	"p"

stmt: EQD(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tandb\t$68,%%ah\n\tcmpb\t$64,%%ah\n\tje\t%a\n"
stmt: GED(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tjbe\t%a\n"
stmt: GTD(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tjb\t%a\n"
stmt: LED(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tjae\t%a\n"
stmt: LTD(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tja\t%a\n"
stmt: NED(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tandb\t$68,%%ah\n\tje\t%a\n" 1

stmt: EQF(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tje\t%a\n"
stmt: GEF(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tjbe\t%a\n"
stmt: GTF(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tjb\t%a\n"
stmt: LEF(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tjae\t%a\n"
stmt: LTF(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tsahf\n\tja\t%a\n"
stmt: NEF(cmpf,freg)	"\tfcomp%0\n\tfstsw %%ax\n\tandb\t$68,%%ah\n\tje\t%a\n"

reg:  CALLI(addrj)  "\tcall\t%0\n\taddl\t$%a,%%esp\n"	hasargs(a)
reg:  CALLI(addrj)  "\tcall\t%0\n"			1

stmt: CALLV(addrj)  "\tcall\t%0\n\taddl\t$%a,%%esp\n"	hasargs(a)
stmt: CALLV(addrj)  "\tcall\t%0\n"			1

freg: CALLF(addrj)  "\tcall\t%0\n\taddl\t$%a,%%esp\n"	15+hasargs(a)
freg: CALLF(addrj)  "\tcall\t%0\n"			15+1

stmt: CALLF(addrj)  "\tcall\t%0\n\taddl\t$%a,%%esp\n\tfstp\t%%st(0)\n"	hasargs(a)
stmt: CALLF(addrj)  "\tcall\t%0\n\tfstp\t%%st(0)\n"			1

freg: CALLD(addrj)  "\tcall\t%0\n\taddl\t$%a,%%esp\n"	15+hasargs(a)
freg: CALLD(addrj)  "\tcall\t%0\n"			15+1

stmt: CALLD(addrj)  "\tcall\t%0\n\taddl\t$%a,%%esp\n\tfstp\t%%st(0)\n"	hasargs(a)
stmt: CALLD(addrj)  "\tcall\t%0\n\tfstp\t%%st(0)\n"			1

stmt: RETI(reg)  "# ret\n" 1
stmt: RETF(freg)  "# retf\n"
stmt: RETD(freg)  "# retd\n"
;;
;; This part was added for the lcc-win32 x86 machine description.
;; In general this rules will NOT work with the standard front end because
;; they do not take into account the vacuous conversions: CVUP CVIU and all
;; others. I eliminated them in the front end since if we maintained them
;; this already long machine description would be completely unmanageable.
;; The number of rules increases exponentially when those conversions are
;; present. It is a simple modification of one line in dag.c
;;
;; This rule avoids using a register to hold an immediate constant
reg: SUBI(con,mr)	"\tmovl\t%1,%c\n\tsubl\t%0,%c\n\tnegl\t%c\n"
;; The same for shifts
reg: LSHI(con,rc5)	"\tmovl\t%0,%c\n\tsall\t%1,%c\n"
;; The same for character assignments
stmt: ASGNC(addr,CVIC(con)) "\tmovb\t%1,%0\n"
;;
;; This rules have the general form:
;; ASGNX(addr,OPERATION(INDIRX(addr),constant))
;; Note that both addresses SHOULD BE THE SAME. This test is taken care
;; of by the function 'incrmem'.
;;
stmt: ASGNP(addr,ADDP(INDIRP(addr),acon)) "\taddl\t$%2,%0\n" incrmem(a)
stmt: ASGNP(addr,SUBP(INDIRP(addr),acon)) "\tsubl\t$%2,%0\n" incrmem(a)
stmt: ASGNP(addr,SUBP(INDIRP(addr),reg)) "\tsubl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,ADDI(INDIRI(addr),rc))  "\taddl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,ADDU(INDIRI(addr),rc))  "\taddl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,SUBI(INDIRI(addr),rc))  "\tsubl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,SUBU(INDIRI(addr),rc))  "\tsubl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,BANDU(INDIRI(addr),rc)) "\tandl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,BORU(INDIRI(addr),rc))  "\torl\t%2,%0\n"  incrmem(a)
stmt: ASGNI(addr,LSHI(INDIRI(addr),con))  "\tsall\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,LSHU(INDIRI(addr),con))  "\tshll\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,RSHI(INDIRI(addr),con))  "\tsarl\t%2,%0\n" incrmem(a)
stmt: ASGNI(addr,RSHU(INDIRI(addr),con))  "\tshrl\t%2,%0\n" incrmem(a)
;;
;; This rules simplify unnecessary conversions from 1. Note that the
;; test for the tree shape is done by a different function since the
;; trees are different.
;;

stmt: ASGNS(addr,CVIS(ADDI(CVSI(INDIRS(addr)),con1))) "\tincw\t%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVIS(SUBI(CVSI(INDIRS(addr)),con1))) "\tdecw\t%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVIC(ADDI(CVCI(INDIRC(addr)),con1))) "\tincb\t%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVIC(SUBI(CVCI(INDIRC(addr)),con1))) "\tdecb\t%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVUC(SUBI(CVCU(INDIRC(addr)),con1))) "\tdecb\t%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVUS(SUBI(CVSU(INDIRS(addr)),con1))) "\tdecw\t%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVUS(ADDI(CVSU(INDIRS(addr)),con1))) "\tincw\t%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVUC(ADDI(CVCU(INDIRC(addr)),con1))) "\tincb\t%0\n" immediateOpShort(a)
;;
;; This rules act directly between a constant and a memory location. Similar
;; to the rules above
;;

;;
;; First short convertions
;;
stmt: ASGNS(addr,CVIS(SUBI(CVSI(INDIRS(addr)),con)))  "\tsubw\t%2,%0\n" 1+immediateOpShort(a)
stmt: ASGNS(addr,CVIS(ADDI(CVSI(INDIRS(addr)),con)))  "\taddw\t%2,%0\n" 1+immediateOpShort(a)
stmt: ASGNS(addr,CVIS(BANDU(CVSI(INDIRS(addr)),con))) "\tandw\t%2,%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVIS(BORU(CVSI(INDIRS(addr)),con)))  "\torw\t%2,%0\n"  immediateOpShort(a)
stmt: ASGNS(addr,CVIS(LSHI(CVSI(INDIRS(addr)),con)))  "\tsalw\t%2,%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVIS(RSHI(CVSI(INDIRS(addr)),con)))  "\tsarw\t%2,%0\n" immediateOpShort(a)

stmt: ASGNS(addr,CVUS(SUBI(CVSU(INDIRS(addr)),con)))  "\tsubw\t%2,%0\n" 1+immediateOpShort(a)
stmt: ASGNS(addr,CVUS(ADDI(CVSU(INDIRS(addr)),con)))  "\taddw\t%2,%0\n" 1+immediateOpShort(a)
stmt: ASGNS(addr,CVUS(BANDU(CVSU(INDIRS(addr)),con))) "\tandw\t%2,%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVUS(BORU(CVSU(INDIRS(addr)),con)))  "\torw\t%2,%0\n"  immediateOpShort(a)
stmt: ASGNS(addr,CVUS(LSHI(CVSU(INDIRS(addr)),con)))  "\tsalw\t%2,%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVUS(RSHI(CVSU(INDIRS(addr)),con)))  "\tshrw\t%2,%0\n" immediateOpShort(a)
stmt: ASGNS(addr,CVIS(reg)) "\tmovw\t%1,%0\n"
stmt: ASGNS(addr,CVUS(reg)) "\tmovw\t%1,%0\n"

;; Then character conversions
;;
stmt: ASGNC(addr,CVUC(SUBI(CVCU(INDIRC(addr)),con)))  "\tsubb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVUC(ADDI(CVCU(INDIRC(addr)),con)))  "\taddb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVUC(BANDU(CVCU(INDIRC(addr)),con))) "\tandb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVUC(BORU(CVCU(INDIRC(addr)),con)))  "\torb\t%2,%0\n"  immediateOpShort(a)
stmt: ASGNC(addr,CVUC(LSHI(CVCU(INDIRC(addr)),con)))  "\tsalb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVUC(RSHI(CVCU(INDIRC(addr)),con)))  "\tshrb\t%2,%0\n" immediateOpShort(a)

stmt: ASGNC(addr,CVIC(SUBI(CVCI(INDIRC(addr)),con)))  "\tsubb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVIC(ADDI(CVCI(INDIRC(addr)),con)))  "\taddb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVIC(BANDU(CVCI(INDIRC(addr)),con))) "\tandb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVIC(BORU(CVCI(INDIRC(addr)),con)))  "\torb\t%2,%0\n"  immediateOpShort(a)
stmt: ASGNC(addr,CVUC(BORU(CVCU(INDIRC(addr)),con)))  "\torl\t%2,%0\n"  1+immediateOpShort(a)
stmt: ASGNC(addr,CVIC(LSHI(CVCI(INDIRC(addr)),con)))  "\tsalb\t%2,%0\n" immediateOpShort(a)
stmt: ASGNC(addr,CVIC(RSHI(CVCI(INDIRC(addr)),con)))  "\tsarb\t%2,%0\n" immediateOpShort(a)

;; This new terminals should be introduced at the beginning of the file.
;; Due to an internal 'hack' in 'emitasm', the integer that represents
;; a rule can't change, so I wrote all new rules later on. I will change that
;; when I have a little time...

zero: CNSTI     "0"     ((a->syms[0]->u.c.v.i == 0)?0:LBURG_MAX)
zero: CNSTU     "0"     ((a->syms[0]->u.c.v.u == 0)?0:LBURG_MAX)


;; Comparisons with zero
;;
stmt: EQI(BANDU(mr,con),zero) "\ttestl\t%1,%0\n\tje\t%a\n" 3
stmt: NEI(BANDU(mr,con),zero) "\ttestl\t%1,%0\n\tjne\t%a\n"
stmt: NEI(BANDU(CVCI(mr),con),zero) "\ttestb\t%1,%0\n\tjne\t%a\n"

stmt: EQI(BANDU(CVSI(INDIRS(addr)),con),zero) "\ttestw\t%1,%0\n\tje\t%a\n"
stmt: NEI(BANDU(CVSI(INDIRS(addr)),con),zero) "\ttestw\t%1,%0\n\tjne\t%a\n"
stmt: EQI(BANDU(CVSU(INDIRS(addr)),con),zero) "\ttestw\t%1,%0\n\tje\t%a\n"
stmt: NEI(BANDU(CVSU(INDIRS(addr)),con),zero) "\ttestw\t%1,%0\n\tjne\t%a\n"
stmt: NEI(BANDU(CVCU(INDIRC(addr)),con),zero) "\ttestb\t%1,%0\n\tjne\t%a\n"
stmt: EQI(BANDU(CVCI(INDIRC(addr)),con),zero) "\ttestb\t%1,%0\n\tje\t%a\n"
stmt: EQI(BANDU(CVCU(INDIRC(addr)),con),zero) "\ttestb\t%1,%0\n\tje\t%a\n"
;;
;; this beauty results when you do the C statement:
;; if (isdigit(c))
;;
stmt: NEI(BANDU(INDIRI(addr),con),zero) "\ttestl\t%1,%0\n\tjne\t%a\n" 2
stmt: EQI(BANDU(INDIRI(addr),con),zero) "\ttestl\t%1,%0\n\tje\t%a\n" 1