| /* Code generator for SAB c16x microcontrollers. */ |
| |
| #include "supp.h" |
| |
| static char FILE_[]=__FILE__; |
| /* Public data that MUST be there. */ |
| |
| /* Name and copyright. */ |
| char cg_copyright[]="vbcc code-generator for c16x V0.3 (c) in 1998-2005 by Volker Barthelmann"; |
| |
| /* Commandline-flags the code-generator accepts */ |
| int g_flags[MAXGF]={VALFLAG,0,0,0, |
| 0,0,0,0, |
| 0}; |
| char *g_flags_name[MAXGF]={"cpu","int32","no-delayed-popping","const-in-data", |
| "merge-constants","no-peephole","mtiny","mlarge", |
| "mhuge","tasking"}; |
| union ppi g_flags_val[MAXGF]; |
| |
| /* Typenames (needed because of HAVE_EXT_TYPES). */ |
| char *typname[]={"strange","bit","char","short","int","long","long long", |
| "float","double","long double","void", |
| "near-pointer","far-pointer","huge-pointer", |
| "array","struct","union","enum","function"}; |
| |
| /* Alignment-requirements for all types in bytes. */ |
| zmax align[MAX_TYPE+1]; |
| |
| /* Alignment that is sufficient for every object. */ |
| zmax maxalign; |
| |
| /* CHAR_BIT of the target machine. */ |
| zmax char_bit; |
| |
| /* Sizes of all elementary types in bytes. */ |
| zmax sizetab[MAX_TYPE+1]; |
| |
| /* Minimum and Maximum values each type can have. */ |
| /* Must be initialized in init_cg(). */ |
| zmax t_min[MAX_TYPE+1]; |
| zumax t_max[MAX_TYPE+1]; |
| zumax tu_max[MAX_TYPE+1]; |
| |
| /* Names of all registers. */ |
| char *regnames[]={"noreg","R0","R1","R2","R3","R4","R5","R6","R7", |
| "R8","R9","R10","R11","R12","R13","R14","R15", |
| "R6/R7","R7/R8","R8/R9","R4/R5", |
| "R14/R15","R13/R14","R12/R13", |
| "R3/R4","R2/R3", |
| "MAXR+1","MAXR+2","ZEROS","ONES"}; |
| |
| /* The Size of each register in bytes. */ |
| zmax regsize[MAXR+1]; |
| |
| /* Type which can store each register. */ |
| struct Typ *regtype[MAXR+1]; |
| |
| /* regsa[reg]!=0 if a certain register is allocated and should */ |
| /* not be used by the compiler pass. */ |
| int regsa[MAXR+1]; |
| |
| /* Specifies which registers may be scratched by functions. */ |
| int regscratch[MAXR+1]={0,1,1,1,1,1,1,0,0,0,0,1,1,1,1,1,1,0,0,0,1,1,1,1,1,1}; |
| |
| int reg_prio[MAXR+1]={0,0,0,0,0,2,3,1,1,1,1,0,0,4,5,6,7,1,1,1,2,6,5,4,0,0}; |
| |
| struct reg_handle empty_reg_handle={0}; |
| |
| /* Names of target-specific variable attributes. */ |
| char *g_attr_name[]={"__interrupt","__dpp0","__dpp1","__dpp2","__dpp3",0}; |
| #define INTERRUPT 1 |
| #define DPP0 2 |
| #define DPP1 4 |
| #define DPP2 8 |
| #define DPP3 16 |
| |
| |
| /****************************************/ |
| /* Some private data and functions. */ |
| /****************************************/ |
| |
| static char *bregnames[]={"nobreg","RL0","RL1","RL2","RL3","RL4","RL5","RL6","RL7", |
| "e8","e9","e10","e11","e12","e13","e14","e15","e16", |
| "e17","e18","e19","e20","e21","e22" |
| }; |
| |
| static long malign[MAX_TYPE+1]= {1,1,1,2,2,2,2,2,2,2,1,2,2,2,1,1,1,2,1}; |
| static long msizetab[MAX_TYPE+1]={0,1,1,2,2,4,8,4,8,8,0,2,4,4,0,0,0,2,0}; |
| |
| struct Typ ityp={SHORT},ltyp={LONG}; |
| |
| #define INT32 (g_flags[1]&USEDFLAG) |
| #define TINY (g_flags[6]&USEDFLAG) |
| #define LARGE (g_flags[7]&USEDFLAG) |
| #define HUGE (g_flags[8]&USEDFLAG) |
| #define TASKING (g_flags[9]&USEDFLAG) |
| |
| |
| #define NDATA 0 |
| #define NBSS 1 |
| #define NCDATA 2 |
| #define FDATA 3 |
| #define FBSS 4 |
| #define FCDATA 5 |
| #define HDATA 6 |
| #define HBSS 7 |
| #define HCDATA 8 |
| #define CODE 9 |
| #define SPECIAL 10 |
| #define BITS 11 |
| |
| #define SEG r2 |
| #define SOF r1 |
| |
| #define MTMP1 MAXR+1 |
| #define MTMP2 MAXR+2 |
| #define ZEROS MAXR+3 |
| #define ONES MAXR+4 |
| |
| static int section=-1,newobj,scnt; |
| static char *codename="SCODE\tSECTION CODE WORD PUBLIC 'CPROGRAM'\n",*ecode="SCODE\tends\n", |
| *ndataname="NDATA\tSECTION LDAT WORD PUBLIC\n",*endata="NDATA\tends\n", |
| *fdataname="FDATA\tSECTION LDAT WORD PUBLIC\n",*efdata="FDATA\tends\n", |
| *hdataname="HDATA\tSECTION LDAT WORD PUBLIC\n",*ehdata="HDATA\tends\n", |
| *nbssname="NBSS\tSECTION LDAT WORD PUBLIC\n",*enbss="NBSS\tends\n", |
| *fbssname="FBSS\tSECTION LDAT WORD PUBLIC\n",*efbss="FBSS\tends\n", |
| *hbssname="HBSS\tSECTION LDAT WORD PUBLIC\n",*ehbss="HBSS\tends\n", |
| *ncdataname="NCDATA\tSECTION LDAT WORD PUBLIC\n",*encdata="NCDATA\tends\n", |
| *fcdataname="FCDATA\tSECTION LDAT WORD PUBLIC\n",*efcdata="FCDATA\tends\n", |
| *hcdataname="HCDATA\tSECTION LDAT WORD PUBLIC\n",*ehcdata="HCDATA\tends\n", |
| |
| *bitsname="BITS\tSECTION BIT BIT PUBLIC 'CBITS'\n",*ebits="BITS\tends\n"; |
| |
| static char *even="\teven\n",*public="public",*comment="; "; |
| |
| #define IMM_IND 1 |
| #define VAR_IND 2 |
| #define POST_INC 3 |
| #define PRE_DEC 4 |
| |
| static char sec_end[32]; |
| /* (user)stack-pointer, pointer-tmp, int-tmp; reserved for compiler */ |
| static const int sp=1,tp=2,ti=11,ti2=12,r4=5,r5=6,r4r5=20; |
| static int tmp1,tmp2,tmp3,tmp4; |
| static void pr(FILE *,struct IC *); |
| static void function_top(FILE *,struct Var *,long); |
| static void function_bottom(FILE *f,struct Var *,long); |
| static int scratchreg(int,struct IC *); |
| static struct Var nvar,fvar; |
| |
| static char *marray[]={0, |
| "__far=__attr(\"far\")", |
| "__near=__attr(\"near\")", |
| "__huge=__attr(\"huge\")", |
| "__bit=__attr(\"bit\") unsigned char", |
| /*"__section(x)=__vattr(\"section(\"x\")\")",*/ |
| "__section(x,y)=__vattr(\"section(\"#x\",\"#y\")\")", |
| "__rbank(x)=__vattr(\"rbank(\"__str(x)\")\")", |
| "__interrupt(x)=__interrupt __vattr(\"ivec(\"__str(x)\")\")", |
| "__sysstack(x)=__stack2(x)", |
| "__usrstack(x)=__stack(x)", |
| "__C16X__", |
| "__C167__", |
| "__ST10__", |
| "__sfr(x)=__vattr(\"sfr(\"__str(x)\")\") extern", |
| "__sfrbit(x,y)=__vattr(\"sfrbit(\"__str(x)\",\"__str(y)\")\") extern", |
| "__esfr(x)=__vattr(\"sfre(\"__str(x)\")\") extern", |
| "__esfrbit(x,y)=__vattr(\"sfrbite(\"__str(x)\",\"__str(y)\")\") extern", |
| "__SIZE_T_INT=1", |
| "__str(x)=#x", |
| 0}; |
| |
| #define isreg(x) ((p->x.flags&(REG|DREFOBJ))==REG) |
| #define isconst(x) ((p->x.flags&(KONST|DREFOBJ))==KONST) |
| #define issfrv(v) (v->vattr&&strstr(v->vattr,"sfr(")) |
| #define issfrbitv(v) (v->vattr&&strstr(v->vattr,"sfrbit(")) |
| #define isesfrv(v) (v->vattr&&strstr(v->vattr,"sfre(")) |
| #define isesfrbitv(v) (v->vattr&&strstr(v->vattr,"sfrbite(")) |
| #define issfr(x) ((p->x.flags&(VAR|DREFOBJ))==VAR&&issfrv(p->x.v)) |
| #define issfrbit(x) ((p->x.flags&(VAR|DREFOBJ))==VAR&&issfrbitv(p->x.v)) |
| #define isesfr(x) ((p->x.flags&(VAR|DREFOBJ))==VAR&&isesfrv(p->x.v)) |
| #define isesfrbit(x) ((p->x.flags&(VAR|DREFOBJ))==VAR&&isesfrbitv(p->x.v)) |
| |
| static long loff,sysstackoffset,usrstackoffset,notpopped,dontpop, |
| usrmaxpushed,sysmaxpushed,sysstack,usrstack; |
| |
| static char *x_t[]={"?","","b","","","","","","","","","","","","","",""}; |
| static char *ccs[]={"z","nz","lt","ge","le","gt"}; |
| static char *logicals[]={"or","xor","and"}; |
| static char *arithmetics[]={"shl","shr","add","sub","mul","div","mod"}; |
| static char *dct[]={"","dbit","db","dw","dw","dw","dw","dw","dw","dw", |
| "(void)","dw","dsptr","dsptr"}; |
| static char *vdct[]={"",".bit",".byte",".short",".short",".short",".short",".short",".short",".short", |
| "(void)",".short",".long",".long"}; |
| static int pushedsize,pushorder=2; |
| static char *idprefix="_",*labprefix="l"; |
| static int ti2_used; |
| static struct rpair qp; |
| static int exit_label,have_frame,stackchecklabel,stack_valid; |
| static char *ret,*call,*jump; |
| static int frame_used; |
| |
| static char *dppprefix="___DPP_"; |
| static int romdpp=0,ramdpp=1; |
| |
| #define STR_NEAR "near" |
| #define STR_FAR "far" |
| #define STR_HUGE "huge" |
| #define STR_BADDR "baddr" |
| |
| #define ISNULL() (zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))&&zldeqto(vldouble,d2zld(0.0))) |
| #define ISLWORD(t) ((t&NQ)==LONG||(t&NQ)==FPOINTER||(t&NQ)==HPOINTER||(t&NQ)==FLOAT) |
| #define ISHWORD(t) ((t&NQ)==INT||(t&NQ)==SHORT||(t&NQ)==NPOINTER) |
| #define ISSTATIC(v) ((v)->storage_class==EXTERN||(v)->storage_class==STATIC) |
| #define ISBADDR(v) ((v)->vtyp->attr&&strstr(STR_BADDR,(v)->vtyp->attr)) |
| |
| static int dppuse(struct Var *v,int section) |
| { |
| if(v->tattr&DPP0) return 0; |
| if(v->tattr&DPP1) return 1; |
| if(v->tattr&DPP2) return 2; |
| if(v->tattr&DPP3) return 3; |
| if(section==NCDATA) return romdpp; |
| if(section==NDATA||section==NBSS) return ramdpp; |
| return -1; |
| } |
| |
| static int ISFAR(struct Var *v) |
| { |
| struct Typ *vt; |
| if(v==&nvar) return 0; |
| if(v==&fvar) return 1; |
| if(issfrv(v)||isesfrv(v)||issfrbitv(v)||isesfrbitv(v)) |
| return 0; |
| vt=v->vtyp; |
| while(ISARRAY(vt->flags)) vt=vt->next; |
| if(vt->attr&&strstr(STR_NEAR,vt->attr)) |
| return 0; |
| if(HUGE||LARGE) |
| return 1; |
| if(vt->attr&&(strstr(STR_FAR,vt->attr)||strstr(STR_HUGE,vt->attr))) |
| return 1; |
| return 0; |
| } |
| |
| static int special_section(FILE *f,struct Var *v) |
| { |
| char *sec,*e; |
| if(!v->vattr) return 0; |
| sec=strstr(v->vattr,"section("); |
| if(!sec) return 0; |
| sec+=strlen("section("); |
| if(f&&TASKING){ |
| emit(f,sec_end); |
| e=sec_end; |
| while(*sec&&*sec!=')') { |
| *e++=*sec; |
| emit_char(f,*sec++); |
| } |
| *e=0; |
| strcat(sec_end,"\tends\n"); |
| emit(f,"\tSECTION LDAT WORD PUBLIC\n"); |
| }else{ |
| emit(f,"\t.section\t"); |
| while(*sec&&*sec!=')') emit_char(f,*sec++); |
| emit(f,"\n"); |
| } |
| if(f) section=SPECIAL; |
| return 1; |
| } |
| |
| static struct fpconstlist { |
| struct fpconstlist *next; |
| int label,typ; |
| union atyps val; |
| } *firstfpc; |
| |
| static int addfpconst(struct obj *o,int t) |
| { |
| struct fpconstlist *p=firstfpc; |
| t&=NQ; |
| if(g_flags[4]&USEDFLAG){ |
| for(p=firstfpc;p;p=p->next){ |
| if(t==p->typ){ |
| eval_const(&p->val,t); |
| if(t==FLOAT&&zldeqto(vldouble,zf2zld(o->val.vfloat))) return p->label; |
| if(t==DOUBLE&&zldeqto(vldouble,zd2zld(o->val.vdouble))) return p->label; |
| if(t==LDOUBLE&&zldeqto(vldouble,o->val.vldouble)) return p->label; |
| } |
| } |
| } |
| p=mymalloc(sizeof(struct fpconstlist)); |
| p->next=firstfpc; |
| p->label=++label; |
| p->typ=t; |
| p->val=o->val; |
| firstfpc=p; |
| return p->label; |
| } |
| static void callee_push(long usr,long sys) |
| { |
| if(usr-usrstackoffset>usrstack) |
| usrstack=usr-usrstackoffset; |
| if(sys-sysstackoffset>sysstack) |
| sysstack=sys-sysstackoffset; |
| } |
| static void push(long usr,long sys) |
| { |
| usrstackoffset-=usr; |
| if(usrstackoffset<usrmaxpushed) |
| usrmaxpushed=usrstackoffset; |
| if(-usrmaxpushed>usrstack) usrstack=-usrmaxpushed; |
| sysstackoffset-=sys; |
| if(sysstackoffset<sysmaxpushed) |
| sysmaxpushed=sysstackoffset; |
| if(-sysmaxpushed>sysstack) sysstack=-sysmaxpushed; |
| } |
| static void pop(long usr,long sys) |
| { |
| usrstackoffset+=usr; |
| sysstackoffset+=sys; |
| } |
| int pointer_type(struct Typ *p) |
| { |
| struct Typ *merk=p; |
| if(!p) ierror(0); |
| while(ISARRAY(p->flags)||ISFUNC(p->flags)) p=p->next; |
| if(p->attr){ |
| if(strstr(p->attr,STR_HUGE)) return HPOINTER; |
| if(strstr(p->attr,STR_FAR)) return FPOINTER; |
| if(strstr(p->attr,STR_NEAR)) return NPOINTER; |
| } |
| if((merk->flags&NQ)==FUNKT){ |
| if(TINY) |
| return NPOINTER; |
| else |
| return HPOINTER; |
| } |
| if(LARGE) |
| return FPOINTER; |
| else if(HUGE) |
| return HPOINTER; |
| else |
| return NPOINTER; |
| } |
| static long voff(struct obj *p) |
| { |
| if(p->v->offset<0) |
| return loff-zm2l(p->v->offset)+zm2l(p->val.vmax)-usrstackoffset+pushedsize-2; |
| return zm2l(p->v->offset)+zm2l(p->val.vmax)-usrstackoffset; |
| } |
| static int alignment(struct obj *o) |
| { |
| if(o->flags&DREFOBJ) return 1; |
| if(!(o->flags&VAR)) ierror(0); |
| if(ISSTATIC(o->v)) return zm2l(o->val.vmax)&1; |
| return voff(o)&1; |
| } |
| |
| static int isseg; |
| |
| static void emit_obj(FILE *f,struct obj *p,int t) |
| /* Gibt Objekt auf Bildschirm aus */ |
| { |
| if(p->am){ |
| static struct rpair bp; |
| int base; |
| if(reg_pair(p->am->base,&bp)) |
| base=bp.SOF; |
| else |
| base=p->am->base; |
| if(p->am->flags==POST_INC){ |
| emit(f,"[%s+]",regnames[base]); |
| return; |
| }else if(p->am->flags==PRE_DEC){ |
| emit(f,"[-%s]",regnames[base]); |
| return; |
| }else{ |
| emit(f,"[%s+#%ld",regnames[base],p->am->offset); |
| if(p->am->v){ |
| if(p->am->v->storage_class==STATIC) |
| emit(f,"+%s%ld",labprefix,zm2l(p->am->v->offset)); |
| else |
| emit(f,"+%s%s",idprefix,p->am->v->identifier); |
| } |
| emit(f,"]"); |
| return; |
| } |
| } |
| if((p->flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)){ |
| emitval(f,&p->val,p->dtyp&NU); |
| return; |
| } |
| if((p->flags&(DREFOBJ|REG))==(DREFOBJ|REG)) emit(f,"["); |
| if(p->flags&VARADR) emit(f,"#"); |
| if((p->flags&(VAR|REG))==VAR){ |
| if(p->v==&nvar||p->v==&fvar){ |
| if(p->v==&fvar) emit(f,"SOF "); |
| emitval(f,&p->val,p->dtyp&NU); |
| return; |
| }else if(issfrv(p->v)||isesfrv(p->v)||issfrbitv(p->v)||isesfrbitv(p->v)){ |
| emit(f,"%s",p->v->identifier); |
| }else if(p->v->storage_class==AUTO||p->v->storage_class==REGISTER){ |
| if(voff(p)) |
| emit(f,"[%s+#%ld]",regnames[sp],voff(p)); |
| else emit(f,"[%s]",regnames[sp]); |
| }else{ |
| if(!isseg&&!ISFUNC(p->v->vtyp->flags)){ |
| if(ISFAR(p->v)) |
| emit(f,"SOF "); |
| else |
| emit(f,"DPPX:"); |
| } |
| isseg=0; |
| if(!zmeqto(l2zm(0L),p->val.vmax)){emitval(f,&p->val,LONG);emit(f,"+");} |
| if(p->v->storage_class==STATIC){ |
| emit(f,"%s%ld",labprefix,zm2l(p->v->offset)); |
| }else{ |
| emit(f,"%s%s",idprefix,p->v->identifier); |
| } |
| } |
| } |
| if(p->flags®){ |
| if(p->reg==MTMP1||p->reg==MTMP2){ |
| if(!reg_pair(p->reg,&rp)) ierror(0); |
| emit(f,"%s",regnames[rp.SOF]); |
| }else{ |
| emit(f,"%s",regnames[p->reg]); |
| if((t&NQ)==BIT) emit(f,".0"); |
| } |
| } |
| /* sometimes we just or a REG into a KONST */ |
| if((p->flags&(KONST|REG))==KONST){ |
| if(ISFLOAT(t)){ |
| emit(f,"%s%d",labprefix,addfpconst(p,t)); |
| }else{ |
| emit(f,"#");emitval(f,&p->val,t&NU); |
| } |
| } |
| if((p->flags&(DREFOBJ|REG))==(DREFOBJ|REG)) emit(f,"]"); |
| } |
| |
| static void pr(FILE *f,struct IC *p) |
| { |
| } |
| static int switched_bank; |
| static void function_top(FILE *f,struct Var *v,long offset) |
| /* erzeugt Funktionskopf */ |
| { |
| int i;char *tmp; |
| static int wrote_header; |
| if(f&&!wrote_header){ |
| wrote_header=1; |
| if(!TASKING){ |
| emit(f,"\t.sfr\tZEROS,0xfe,0x8e\n"); |
| emit(f,"\t.sfr\tONES,0xfe,0x8f\n"); |
| emit(f,"\t.sfr\tCP,0xfe,0x08\n"); |
| emit(f,"\t.sfr\tMDH,0xfe,0x06\n"); |
| emit(f,"\t.sfr\tMDL,0xfe,0x07\n"); |
| emit(f,"\t.sfr\tPSW,0xfe,0x88\n"); |
| } |
| } |
| have_frame=0;stack_valid=1; |
| pushedsize=0; |
| if(v->vattr&&(tmp=strstr(v->vattr,"ivec("))){ |
| int vec;char c;int rc; |
| rc=sscanf(tmp+5,"%i%c",&vec,&c); |
| if(rc!=2||c!=')') error(324,"illegal vector number"); |
| emit(f,"\t.section\t\".ivec%d\",\"axr\"\n",vec); |
| emit(f,"\t.global\tivec%d\nivec%d:\n",vec,vec); |
| if(v->storage_class==EXTERN) |
| emit(f,"\tjmps\t%s%s\n",idprefix,v->identifier); |
| else |
| emit(f,"\tjmps\t%s%ld\n",labprefix,zm2l(v->offset)); |
| section=-1; |
| } |
| if(!special_section(f,v)&§ion!=CODE){ |
| if(f&&TASKING){ |
| emit(f,sec_end);emit(f,codename); |
| section=CODE; |
| strcpy(sec_end,ecode); |
| }else |
| emit(f,codename); |
| } |
| if(TASKING){ |
| if(v->storage_class==EXTERN){ |
| if((v->flags&(INLINEFUNC|INLINEEXT))!=INLINEFUNC) |
| emit(f,"\tpublic\t%s%s\n",idprefix,v->identifier); |
| if(TINY) |
| emit(f,"%s%s\tproc\tnear\n",idprefix,v->identifier); |
| else |
| emit(f,"%s%s\tproc\tfar\n",idprefix,v->identifier); |
| }else{ |
| if(TINY) |
| emit(f,"%s%ld\tproc\tnear\n",labprefix,zm2l(v->offset)); |
| else |
| emit(f,"%s%ld\tproc\tfar\n",labprefix,zm2l(v->offset)); |
| } |
| }else{ |
| if(v->storage_class==EXTERN){ |
| if((v->flags&(INLINEFUNC|INLINEEXT))!=INLINEFUNC) |
| emit(f,"\t.global\t%s%s\n",idprefix,v->identifier); |
| emit(f,"\t.align\t1\n%s%s:\n",idprefix,v->identifier); |
| }else{ |
| emit(f,"\t.align\t1\n%s%ld:\n",labprefix,zm2l(v->offset)); |
| } |
| } |
| if(v->vattr&&(tmp=strstr(v->vattr,"rbank("))){ |
| char *p; |
| tmp+=strlen("rbank("); |
| emit(f,"\tmov\t%s",idprefix); |
| for(p=tmp;*p&&*p!=')';p++) emit_char(f,*p); |
| emit(f,",%s\n",regnames[sp]); |
| emit(f,"\tscxt\tCP,#%s",idprefix); |
| for(p=tmp;*p&&*p!=')';p++) emit_char(f,*p); |
| emit(f,"\n"); |
| switched_bank=1; |
| }else |
| switched_bank=0; |
| if(v->tattr&INTERRUPT){ |
| /*FIXME?*/ |
| emit(f,"\tpush\tMDL\n"); |
| emit(f,"\tpush\tMDH\n"); |
| } |
| if(stack_check){ |
| stackchecklabel=++label; |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,#%s%d\n",regnames[tp],labprefix,stackchecklabel); |
| emit(f,"\t%s\t%s__stack_check\n",call,idprefix);/*FIXME:usrstack*/ |
| } |
| for(i=1;i<=16;i++){ |
| if(regused[i]&&!regscratch[i]&&!regsa[i]){ |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[i]); |
| push(2,0); |
| have_frame=1;pushedsize+=2; |
| } |
| } |
| if(offset){ |
| emit(f,"\tsub\t%s,#%ld\n",regnames[sp],offset); |
| have_frame=1; |
| } |
| } |
| static void function_bottom(FILE *f,struct Var *v,long offset) |
| /* erzeugt Funktionsende */ |
| { |
| int i; |
| if(offset) emit(f,"\tadd\t%s,#%ld\n",regnames[sp],offset); |
| for(i=16;i>0;i--){ |
| if(regused[i]&&!regscratch[i]&&!regsa[i]){ |
| emit(f,"\tmov\t%s,[%s+]\n",regnames[i],regnames[sp]); |
| pop(2,0); |
| } |
| } |
| if(v->tattr&INTERRUPT){ |
| emit(f,"\tpop\tMDH\n"); |
| emit(f,"\tpop\tMDL\n"); |
| } |
| if(switched_bank) |
| emit(f,"\tpop\tCP\n"); |
| if(ret) emit(f,"\t%s\n",ret); |
| if(TASKING){ |
| if(v->storage_class==EXTERN){ |
| emit(f,"%s%s\tendp\n",idprefix,v->identifier); |
| if(!strcmp("main",v->identifier)) emit(f,"\textern\t__CSTART:far\n"); |
| }else |
| emit(f,"%s%ld\tendp\n",labprefix,zm2l(v->offset)); |
| }else{ |
| if(v->storage_class==EXTERN){ |
| emit(f,"\t.type\t%s%s,@function\n",idprefix,v->identifier); |
| emit(f,"\t.size\t%s%s,$-%s%s\n",idprefix,v->identifier,idprefix,v->identifier); |
| }else{ |
| emit(f,"\t.type\t%s%ld,@function\n",labprefix,zm2l(v->offset)); |
| emit(f,"\t.size\t%s%ld,$-%s%ld\n",labprefix,zm2l(v->offset),labprefix,zm2l(v->offset)); |
| } |
| } |
| if(stack_check) |
| emit(f,"%s%d\tequ\t%ld\n",labprefix,stackchecklabel,offset+pushedsize-usrmaxpushed); |
| if(stack_valid){ |
| long ustack=usrstack+offset+pushedsize,sstack=sysstack; |
| if(!v->fi) v->fi=new_fi(); |
| if(v->fi->flags&ALL_STACK){ |
| if(v->fi->stack1!=ustack) |
| if(f) error(319,"user-",ustack,v->fi->stack1); |
| if(v->fi->stack2!=sstack) |
| if(f) error(319,"system-",sstack,v->fi->stack2); |
| }else{ |
| v->fi->flags|=ALL_STACK; |
| v->fi->stack1=ustack; |
| v->fi->stack2=sstack; |
| } |
| #if 0 |
| emit(f,"%s usrstacksize=%ld\n",comment,zm2l(v->fi->stack1)); |
| emit(f,"%s sysstacksize=%ld\n",comment,zm2l(v->fi->stack2)); |
| #endif |
| if(TASKING){ |
| }else{ |
| emit(f,"\t.equ\t%s__ustack_%s,%ld\n",idprefix,v->identifier,zm2l(v->fi->stack1)); |
| emit(f,"\t.equ\t%s__sstack_%s,%ld\n",idprefix,v->identifier,zm2l(v->fi->stack2)); |
| } |
| } |
| } |
| static int compare_objects(struct obj *o1,struct obj *o2) |
| { |
| if(o1->flags==o2->flags&&o1->am==o2->am){ |
| if(!(o1->flags&VAR)||(o1->v==o2->v&&zmeqto(o1->val.vmax,o2->val.vmax))){ |
| if(!(o1->flags®)||o1->reg==o2->reg){ |
| return 1; |
| } |
| } |
| } |
| return 0; |
| } |
| #define EXT_IC_CMPIA 1 |
| #define EXT_IC_BTST 2 |
| #define EXT_IC_CMPIB 3 |
| static void clear_ext_ic(struct ext_ic *p) |
| { |
| p->flags=0; |
| p->r=0; |
| p->offset=0; |
| } |
| static long pof2(zumax x) |
| /* Yields log2(x)+1 oder 0. */ |
| { |
| zumax p;int ln=1; |
| p=ul2zum(1L); |
| while(ln<=32&&zumleq(p,x)){ |
| if(zumeqto(x,p)) return ln; |
| ln++;p=zumadd(p,p); |
| } |
| return 0; |
| } |
| static void peephole(struct IC *p) |
| { |
| int c,c2,r,t;struct IC *p2; |
| struct AddressingMode *am; |
| frame_used=0; |
| for(;p;p=p->next){ |
| c=p->code; |
| if(!frame_used){ |
| if((p->q1.flags&(REG|VAR))==VAR&&!ISSTATIC(p->q1.v)) frame_used=1; |
| if((p->q2.flags&(REG|VAR))==VAR&&!ISSTATIC(p->q2.v)) frame_used=1; |
| if((p->z.flags&(REG|VAR))==VAR&&!ISSTATIC(p->z.v)) frame_used=1; |
| } |
| /* letztes Label merken */ |
| if(c!=FREEREG&&c!=ALLOCREG&&(c!=SETRETURN||!isreg(q1)||p->q1.reg!=p->z.reg)) exit_label=0; |
| if(c==LABEL) exit_label=p->typf; |
| /* and x,#const;bne/beq */ |
| if(c==AND&&isconst(q2)&&isreg(z)&&!ISLWORD(ztyp(p))){ |
| long bit; |
| eval_const(&p->q2.val,p->typf); |
| if(bit=pof2(vumax)){ |
| struct IC *cmp=0;int fr=0; |
| for(p2=p->next;p2;p2=p2->next){ |
| c2=p2->code; |
| if(c2==TEST){ |
| if((p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==p->z.reg){ |
| cmp=p2;continue; |
| } |
| } |
| if(c2==COMPARE&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==p->z.reg&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){ |
| eval_const(&p2->q2.val,p2->typf); |
| if(ISNULL()){ |
| cmp=p2;continue; |
| } |
| break; |
| } |
| if(c2==FREEREG&&p2->q1.reg==p->z.reg) {fr++;continue;} |
| if((c2==BNE||c2==BEQ)&&cmp&&fr==1){ |
| p->ext.flags=EXT_IC_BTST; |
| p2->ext.flags=EXT_IC_BTST; |
| p2->ext.offset=bit-1; |
| cmp->code=NOP; |
| cmp->q1.flags=cmp->q2.flags=cmp->z.flags=0; |
| break; |
| } |
| if(((p2->q1.flags®)&&p2->q1.reg==p->z.reg)||((p2->q2.flags®)&&p2->q2.reg==p->z.reg)||((p2->z.flags®)&&p2->z.reg==p->z.reg)) break; |
| if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break; |
| } |
| } |
| } |
| /* [Rx+] in q1 */ |
| if(!p->q1.am&&(p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)){ |
| r=p->q1.reg; t=q1typ(p); |
| if((!(p->q2.flags®)||p->q2.reg!=r)&&(!(p->z.flags®)||p->z.reg!=r)){ |
| for(p2=p->next;p2;p2=p2->next){ |
| c2=p2->code; |
| if((c2==ADD||(c2==ADDI2P&&(p2->typf2&NQ)!=HPOINTER))&&(p2->q1.flags&(REG|DREFOBJ))==REG&&(p2->z.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r&&p2->z.reg==r&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){ |
| eval_const(&p2->q2.val,p2->typf2); |
| if((zmeqto(vmax,l2zm(1L))&&(t&NQ)==CHAR)||(zmeqto(vmax,l2zm(2L))&&ISHWORD(t))){ |
| p2->code=NOP; |
| p2->q1.flags=p2->q2.flags=p2->z.flags=0; |
| p->q1.am=mymalloc(sizeof(*am)); |
| p->q1.am->flags=POST_INC; |
| p->q1.am->base=r; |
| }else break; |
| } |
| if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break; |
| if(((p2->q1.flags®)&&p2->q1.reg==r)||((p2->q2.flags®)&&p2->q2.reg==r)||((p2->z.flags®)&&p2->z.reg==r)) break; |
| } |
| } |
| } |
| /* [Rx+] in q2 */ |
| if(!p->q2.am&&(p->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)){ |
| r=p->q2.reg; t=q2typ(p); |
| if((!(p->q1.flags®)||p->q1.reg!=r)&&(!(p->z.flags®)||p->z.reg!=r)){ |
| for(p2=p->next;p2;p2=p2->next){ |
| c2=p2->code; |
| if((c2==ADD||(c2==ADDI2P&&(p2->typf2&NQ)!=HPOINTER))&&(p2->q1.flags&(REG|DREFOBJ))==REG&&(p2->z.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r&&p2->z.reg==r&&(p2->q2.flags&(KONST|DREFOBJ))==KONST){ |
| eval_const(&p2->q2.val,p2->typf2); |
| if((zmeqto(vmax,l2zm(1L))&&(t&NQ)==CHAR)||(zmeqto(vmax,l2zm(2L))&&ISHWORD(t))){ |
| p2->code=NOP; |
| p2->q1.flags=p2->q2.flags=p2->z.flags=0; |
| p->q2.am=mymalloc(sizeof(*am)); |
| p->q2.am->flags=POST_INC; |
| p->q2.am->base=r; |
| }else break; |
| } |
| if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break; |
| if(((p2->q1.flags®)&&p2->q1.reg==r)||((p2->q2.flags®)&&p2->q2.reg==r)||((p2->z.flags®)&&p2->z.reg==r)) break; |
| } |
| } |
| } |
| /* move x->t; add/sub x,#1/-1/2/-2-> x; test/cmp t,#0; freereg t => cmpid12 */ |
| if(c==ASSIGN&&isreg(q1)&&isreg(z)&&ISHWORD(p->typf)){ |
| p2=p->next;if(p2) c2=p2->code; |
| if(p2&&(c2==ADD||c2==SUB||c2==ADDI2P||c2==SUBIFP)&&(p2->q1.flags&(REG|DREFOBJ))==REG&&(p2->z.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==p->q1.reg&&p2->z.reg==p2->q1.reg&&(p2->q2.flags&(KONST|DREFOBJ))==KONST&&ISHWORD(p2->typf)){ |
| long l; |
| eval_const(&p2->q2.val,p2->typf); |
| l=zm2l(vmax); |
| if((l==1||l==2||l==-1||l==-2)&&p2->next){ |
| struct IC *p3=p2->next; |
| if((p3->code==TEST||(p3->code==COMPARE&&(p3->q2.flags&(KONST|DREFOBJ))==KONST))&&(p3->q1.flags&(REG|DREFOBJ))==REG&&p3->q1.reg==p->z.reg&&scratchreg(p->z.reg,p3)&&ISHWORD(p3->typf)){ |
| if(c2==SUB||c2==SUBIFP) l=-l; |
| p3->q1=p->q1; |
| p->code=c=NOP; |
| p->q1.flags=p->q2.flags=p->z.flags=0; |
| p2->code=NOP; |
| p2->q1.flags=p2->q2.flags=p2->z.flags=0; |
| p3->ext.flags=EXT_IC_CMPIB; |
| p3->ext.offset=l; |
| p3->ext.r=p->q1.reg; |
| } |
| } |
| } |
| } |
| /* add/sub x,#1/2/-1/-2 ->x; cmp x,#c => cmpid12 x,#c+-12 */ |
| if((c==ADD||c==SUB||c==ADDI2P||c==SUBIFP)&&isreg(q1)&&isreg(z)&&p->q1.reg==p->z.reg&&isconst(q2)&&ISHWORD(p->typf)&&!reg_pair(p->q1.reg,&rp)){ |
| eval_const(&p->q2.val,p->typf); |
| if(zmeqto(vmax,l2zm(-1L))||zmeqto(vmax,l2zm(-2L))||zmeqto(vmax,l2zm(1L))||zmeqto(vmax,l2zm(2L))){ |
| long l=zm2l(vmax); |
| if(c==SUB||c==SUBIFP) l=-l; |
| r=p->q1.reg; |
| for(p2=p->next;p2;p2=p2->next){ |
| c2=p2->code; |
| if((p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r&&(c2==TEST||(c2==COMPARE&&(p2->q2.flags&(KONST|DREFOBJ))==KONST))&&ISHWORD(p2->typf)){ |
| unsigned long ul; |
| eval_const(&p2->q2.val,q2typ(p2)); |
| ul=zum2ul(vumax); |
| if(ul<65534){ |
| p2->ext.flags=EXT_IC_CMPIA; |
| p2->ext.offset=l; |
| p2->ext.r=r; |
| p->code=c=NOP; |
| p->q1.flags=p->q2.flags=p->z.flags=0; |
| } |
| break; |
| |
| } |
| if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break; |
| if((p2->q1.flags®)&&p2->q1.reg==r) break; |
| if((p2->q2.flags®)&&p2->q2.reg==r) break; |
| if((p2->z.flags®)&&p2->z.reg==r) break; |
| } |
| } |
| } |
| /* [Rx+#const] */ |
| if((c==ADDI2P||c==SUBIFP)&&((p->typf2&NQ)==NPOINTER||(p->typf2&NQ)==FPOINTER)&&isreg(z)&&((p->q2.flags&(KONST|DREFOBJ))==KONST||(p->q1.flags&VARADR))){ |
| int base;zmax of;struct obj *o;struct Var *v; |
| if(p->q1.flags&VARADR){ |
| v=p->q1.v; |
| of=p->q1.val.vmax; |
| r=p->z.reg; |
| if(isreg(q2)) base=p->q2.reg; else base=r; |
| }else{ |
| eval_const(&p->q2.val,p->typf); |
| if(c==SUBIFP) of=zmsub(l2zm(0L),vmax); else of=vmax; |
| v=0; |
| r=p->z.reg; |
| if(isreg(q1)) base=p->q1.reg; else base=r; |
| } |
| o=0; |
| for(p2=p->next;p2;p2=p2->next){ |
| c2=p2->code; |
| if(c2==CALL||c2==LABEL||(c2>=BEQ&&c2<=BRA)) break; |
| if(c2!=FREEREG&&(p2->q1.flags&(REG|DREFOBJ))==REG&&p2->q1.reg==r) break; |
| if(c2!=FREEREG&&(p2->q2.flags&(REG|DREFOBJ))==REG&&p2->q2.reg==r) break; |
| if(c2!=CALL&&(c2<LABEL||c2>BRA)/*&&c2!=ADDRESS*/){ |
| if(!p2->q1.am&&(p2->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q1.reg==r){ |
| if(o) break; |
| o=&p2->q1; |
| } |
| if(!p2->q2.am&&(p2->q2.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->q2.reg==r){ |
| if(o) break; |
| o=&p2->q2; |
| } |
| if(!p2->z.am&&(p2->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&p2->z.reg==r){ |
| if(o) break; |
| o=&p2->z; |
| } |
| } |
| if(c2==FREEREG||(p2->z.flags&(REG|DREFOBJ))==REG){ |
| int m; |
| if(c2==FREEREG) |
| m=p2->q1.reg; |
| else |
| m=p2->z.reg; |
| if(m==r){ |
| if(o){ |
| o->am=am=mymalloc(sizeof(*am)); |
| am->flags=IMM_IND; |
| am->base=base; |
| am->offset=zm2l(of); |
| am->v=v; |
| if(!v){ |
| if(isreg(q1)){ |
| p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0; |
| }else{ |
| p->code=c=ASSIGN;p->q2.flags=0; |
| p->typf=p->typf2;p->q2.val.vmax=sizetab[p->typf2&NQ]; |
| } |
| }else{ |
| if(isreg(q2)){ |
| p->code=c=NOP;p->q1.flags=p->q2.flags=p->z.flags=0; |
| }else{ |
| p->code=c=ASSIGN;p->q1=p->q2;p->q2.flags=0; |
| p->q2.val.vmax=sizetab[p->typf&NQ]; |
| } |
| } |
| } |
| break; |
| } |
| if(/*get_reg!! c2!=FREEREG&&*/m==base) break; |
| continue; |
| } |
| } |
| } |
| } |
| } |
| |
| static struct obj *cam(int flags,int base,long offset,struct Var *v) |
| /* Initializes an addressing-mode structure and returns a pointer to */ |
| /* that object. Will not survive a second call! */ |
| { |
| static struct obj obj; |
| static struct AddressingMode am; |
| obj.am=&am; |
| am.flags=flags; |
| am.base=base; |
| am.offset=offset; |
| am.v=v; |
| return &obj; |
| } |
| /* prints label types used by tasking assembler */ |
| static void emit_label_type(FILE *f,struct Var *v) |
| { |
| if(TASKING){ |
| if(ISFUNC(v->vtyp->flags)){ |
| if(TINY) |
| emit(f,"near"); |
| else |
| emit(f,"far"); |
| }else{ |
| if((v->vtyp->flags&NQ)==BIT) |
| emit(f,"bit"); |
| else if((v->vtyp->flags&NQ)==CHAR) |
| emit(f,"byte"); |
| else |
| emit(f,"word"); |
| } |
| } |
| } |
| static void move(FILE *f,struct obj *q,int qr,struct obj *z,int zr,int t) |
| /* Generates code to move object q (or register qr) into object z (or */ |
| /* register zr). One must be a register and DREFOBJ only allowed with */ |
| /* registers. */ |
| { |
| long l=0; |
| t&=NQ; |
| if(q&&(q->flags&(REG|DREFOBJ))==REG) qr=q->reg; |
| if(z&&(z->flags&(REG|DREFOBJ))==REG) zr=z->reg; |
| if(qr&&qr==zr) return; |
| if((t&NQ)==BIT){ |
| if(!zr&&((z->flags&(VAR|REG|DREFOBJ|VARADR))!=VAR||!ISSTATIC(z->v))) ierror(0); |
| if(q&&(q->flags&(KONST|DREFOBJ))==KONST){ |
| if(z&&(z->flags&(VAR|DREFOBJ))==VAR&&isesfrbitv(z->v)) |
| emit(f,"\textr\t#1\n"); |
| eval_const(&q->val,BIT); |
| if(zmeqto(vmax,l2zm(0L))) |
| emit(f,"\tbclr\t"); |
| else |
| emit(f,"\tbset\t"); |
| if(zr) emit(f,"%s.0",regnames[zr]); else emit_obj(f,z,t); |
| emit(f,"\n"); |
| }else{ |
| if(!qr&&((q->flags&(VAR|REG|DREFOBJ|VARADR))!=VAR||!ISSTATIC(q->v))) ierror(0); |
| if((q->flags&(VAR|DREFOBJ))==VAR&&isesfrbitv(q->v)){ |
| if(!zr&&((z->flags&(VAR|DREFOBJ))!=VAR||!isesfrbitv(z->v))){ |
| emit(f,"\textr\t#1\n"); |
| emit(f,"\tbmov\t%s.0,",regnames[ti]); |
| if(qr) emit(f,"%s.0",regnames[qr]); else emit_obj(f,q,t); |
| emit(f,"\n"); |
| emit(f,"\tbmov\t"); |
| if(zr) emit(f,"%s.0",regnames[zr]); else emit_obj(f,z,t); |
| emit(f,",%s.0\n",regnames[ti]); |
| return; |
| }else |
| emit(f,"\textr\t#1\n"); |
| }else if(z&&(z->flags&(VAR|DREFOBJ))==VAR&&isesfrbitv(z->v)){ |
| if(!qr){ |
| emit(f,"\tbmov\t%s.0,",regnames[ti]); |
| if(qr) emit(f,"%s.0",regnames[qr]); else emit_obj(f,q,t); |
| emit(f,"\n"); |
| emit(f,"\textr\t#1\n"); |
| emit(f,"\tbmov\t");emit_obj(f,z,t); |
| emit(f,",%s.0\n",regnames[ti]); |
| return; |
| }else |
| emit(f,"\textr\t#1\n"); |
| } |
| emit(f,"\tbmov\t"); |
| if(zr) emit(f,"%s.0",regnames[zr]); else emit_obj(f,z,t); |
| emit(f,","); |
| if(qr) emit(f,"%s.0",regnames[qr]); else emit_obj(f,q,t); |
| emit(f,"\n"); |
| } |
| return; |
| } |
| if(q){ |
| if(!zr) ierror(0); |
| if(q->am&®_pair(q->am->base,&rp)){ |
| l=rp.SOF; |
| if(zr>16) |
| emit(f,"\texts\t%s,#2\n",regnames[rp.SEG]); |
| else |
| emit(f,"\texts\t%s,#1\n",regnames[rp.SEG]); |
| }else if((q->flags&DREFOBJ)&®_pair(q->reg,&rp)){ |
| l=rp.SOF; |
| if(zr>16) |
| emit(f,"\texts\t%s,#2\n",regnames[rp.SEG]); |
| else |
| emit(f,"\texts\t%s,#1\n",regnames[rp.SEG]); |
| }else if((q->flags&(VAR|REG|VARADR))==VAR&&ISSTATIC(q->v)&&ISFAR(q->v)){ |
| emit(f,"\texts\t#SEG "); |
| isseg=1;emit_obj(f,q,INT); |
| if(zr>16) |
| emit(f,",#2\n"); |
| else |
| emit(f,",#1\n"); |
| } |
| if(reg_pair(zr,&rp)){ |
| if(q->am){ |
| emit(f,"\tmov\t%s,",regnames[rp.r1]); |
| emit_obj(f,q,t);emit(f,"\n"); |
| q->am->offset+=2; |
| emit(f,"\tmov\t%s,",regnames[rp.r2]); |
| emit_obj(f,q,t);emit(f,"\n"); |
| q->am->offset-=2; |
| return; |
| }else if(q->flags&DREFOBJ){ |
| int tmp=0; |
| if(!(q->flags®)) ierror(0); |
| if(!l) l=q->reg; |
| if(l==rp.r1){ |
| tmp=rp.r1; |
| /*FIXME: tp hier immer frei? */ |
| BSET(regs_modified,tp); |
| rp.r1=tp; |
| } |
| /*FIXME: test auf scratchreg*/ |
| if(q->reg>MAXR){ |
| emit(f,"\tmov\t%s,[%s+]\n",regnames[rp.r1],regnames[l]); |
| emit(f,"\tmov\t%s,[%s]\n",regnames[rp.r2],regnames[l]); |
| }else{ |
| emit(f,"\tmov\t%s,[%s]\n",regnames[rp.r1],regnames[l]); |
| emit(f,"\tmov\t%s,[%s+#2]\n",regnames[rp.r2],regnames[l]); |
| } |
| if(tmp) emit(f,"\tmov\t%s,%s\n",regnames[tmp],regnames[rp.r1]); |
| return; |
| }else if(q->flags&VARADR){ |
| q->flags&=~VARADR; |
| emit(f,"\tmov\t%s,#",regnames[rp.r1]);emit_obj(f,q,t);emit(f,"\n"); |
| emit(f,"\tmov\t%s,#SEG ",regnames[rp.r2]);isseg=1;emit_obj(f,q,t);emit(f,"\n"); |
| q->flags|=VARADR; |
| return; |
| }else if((q->flags&(KONST|DREFOBJ))==KONST){ |
| long l2; |
| if(ISFLOAT(t)) ierror(0); |
| eval_const(&q->val,t); |
| l=zm2zl(zmand(vmax,l2zm(65535L))); |
| emit(f,"\tmov\t%s,#%ld\n",regnames[rp.r1],l); |
| l2=zm2l(zmrshift(vmax,l2zm(16L))); |
| if(l2==l) emit(f,"\tmov\t%s,%s\n",regnames[rp.r2],regnames[rp.r1]); |
| else emit(f,"\tmov\t%s,#%ld\n",regnames[rp.r2],l2); |
| return; |
| }else if(qr){ |
| if(!reg_pair(qr,&qp)) ierror(0); |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r1],regnames[qp.r1]); |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r2],regnames[qp.r2]); |
| return; |
| }else{ |
| if(!(q->flags&VAR)) ierror(0); |
| if(q->v->storage_class==AUTO||q->v->storage_class==REGISTER){ |
| l=voff(q); |
| if(l) |
| emit(f,"\tmov\t%s,[%s+#%ld]\n",regnames[rp.r1],regnames[sp],l); |
| else |
| emit(f,"\tmov\t%s,[%s]\n",regnames[rp.r1],regnames[sp]); |
| emit(f,"\tmov\t%s,[%s+#%ld]\n",regnames[rp.r2],regnames[sp],l+2); |
| return; |
| }else{ |
| emit(f,"\tmov\t%s,",regnames[rp.r1]);emit_obj(f,q,t);emit(f,"\n"); |
| emit(f,"\tmov\t%s,",regnames[rp.r2]);emit_obj(f,q,t);emit(f,"+2\n"); |
| return; |
| } |
| } |
| ierror(0); |
| }else{ |
| emit(f,"\tmov%s\t%s,",x_t[t&NQ],(t==CHAR?bregnames[zr]:regnames[zr])); |
| if(qr&&t==CHAR) |
| emit(f,"%s",bregnames[qr]); |
| else if(!q->am&&(q->flags&(REG|DREFOBJ))==(REG|DREFOBJ)&®_pair(q->reg,&rp)) |
| emit(f,"[%s]",regnames[rp.SOF]); |
| else |
| emit_obj(f,q,t); |
| emit(f,"\n"); |
| return; |
| } |
| } |
| if(z){ |
| if(!qr) ierror(0); |
| if(z->am&®_pair(z->am->base,&rp)){ |
| l=rp.SOF; |
| if(qr>16) |
| emit(f,"\texts\t%s,#2\n",regnames[rp.SEG]); |
| else |
| emit(f,"\texts\t%s,#1\n",regnames[rp.SEG]); |
| }else if((z->flags&DREFOBJ)&®_pair(z->reg,&rp)){ |
| l=rp.SOF; |
| if(qr>16) |
| emit(f,"\texts\t%s,#2\n",regnames[rp.SEG]); |
| else |
| emit(f,"\texts\t%s,#1\n",regnames[rp.SEG]); |
| }else if((z->flags&(VAR|REG|VARADR))==VAR&&ISSTATIC(z->v)&&ISFAR(z->v)){ |
| emit(f,"\texts\t#SEG "); |
| isseg=1;emit_obj(f,z,INT); |
| if(qr>16) |
| emit(f,",#2\n"); |
| else |
| emit(f,",#1\n"); |
| } |
| if(reg_pair(qr,&rp)){ |
| if(z->am){ |
| emit(f,"\tmov\t");emit_obj(f,z,t);emit(f,",%s\n",regnames[rp.r1]); |
| z->am->offset+=2; |
| emit(f,"\tmov\t");emit_obj(f,z,t);emit(f,",%s\n",regnames[rp.r2]); |
| z->am->offset-=2; |
| return; |
| }else if(z->flags&DREFOBJ){ |
| if(!(z->flags®)) ierror(0); |
| if(!l) l=z->reg; |
| /*FIXME: test auf scratchreg statt >MAXR*/ |
| if(z->reg>MAXR&&l!=rp.r2){ |
| emit(f,"\tmov\t[%s+],%s\n",regnames[l],regnames[rp.r1]); |
| emit(f,"\tmov\t[%s],%s\n",regnames[l],regnames[rp.r2]); |
| }else{ |
| emit(f,"\tmov\t[%s],%s\n",regnames[l],regnames[rp.r1]); |
| emit(f,"\tmov\t[%s+#2],%s\n",regnames[l],regnames[rp.r2]); |
| } |
| return; |
| }else if(zr){ |
| if(!reg_pair(zr,&qp)) ierror(0); |
| emit(f,"\tmov\t%s,%s\n",regnames[qp.r1],regnames[rp.r1]); |
| emit(f,"\tmov\t%s,%s\n",regnames[qp.r2],regnames[rp.r2]); |
| return; |
| }else{ |
| if(!(z->flags&VAR)) ierror(0); |
| if(z->v->storage_class==AUTO||z->v->storage_class==REGISTER){ |
| l=voff(z); |
| if(l) |
| emit(f,"\tmov\t[%s+#%ld],%s\n",regnames[sp],l,regnames[rp.r1]); |
| else |
| emit(f,"\tmov\t[%s],%s\n",regnames[sp],regnames[rp.r1]); |
| emit(f,"\tmov\t[%s+#%ld],%s\n",regnames[sp],l+2,regnames[rp.r2]); |
| return; |
| }else{ |
| emit(f,"\tmov\t");emit_obj(f,z,t);emit(f,",%s\n",regnames[rp.r1]); |
| emit(f,"\tmov\t");emit_obj(f,z,t);emit(f,"+2,%s\n",regnames[rp.r2]); |
| return; |
| } |
| } |
| ierror(0); |
| }else{ |
| emit(f,"\tmov%s\t",x_t[t&NQ]); |
| if(!z->am&&(z->flags&(REG|DREFOBJ))==(REG|DREFOBJ)&®_pair(z->reg,&rp)) |
| emit(f,"[%s]",regnames[rp.SOF]); |
| else if(zr&&t==CHAR) |
| emit(f,"%s",bregnames[zr]); |
| else |
| emit_obj(f,z,t); |
| emit(f,",%s\n",((t==CHAR)?bregnames[qr]:regnames[qr])); |
| return; |
| } |
| } |
| /*reg->reg*/ |
| if(t==CHAR){ |
| emit(f,"\tmovb\t%s,%s\n",bregnames[zr],bregnames[qr]); |
| }else if(ISLWORD(t)){ |
| if(!reg_pair(qr,&qp)) ierror(0); |
| if(!reg_pair(zr,&rp)) ierror(0); |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r1],regnames[qp.r1]); |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r2],regnames[qp.r2]); |
| }else{ |
| emit(f,"\tmov\t%s,%s\n",regnames[zr],regnames[qr]); |
| } |
| } |
| |
| static int get_reg(FILE *f,struct IC *p) |
| { |
| int i; |
| for(i=1;i<=16;i++){ |
| if(!regs[i]&®scratch[i]){ |
| BSET(regs_modified,i); |
| return i; |
| } |
| } |
| ierror(0); |
| } |
| |
| static void save_result(FILE *f,int r,struct IC *p,int t) |
| /* Saves result in register r to object o. May use tp or ti. */ |
| { |
| if((p->z.flags&(REG|DREFOBJ))==DREFOBJ){ |
| BSET(regs_modified,tp); |
| if(ISLWORD(p->z.dtyp)){ |
| if(!ti2_used) tmp4=ti2; else tmp4=get_reg(f,p); |
| BSET(regs_modified,tmp3); |
| tmp3=tp; |
| p->z.flags&=~DREFOBJ; |
| move(f,&p->z,0,0,MTMP2,FPOINTER); |
| p->z.flags=(DREFOBJ|REG); |
| p->z.reg=MTMP2; |
| }else if(!(p->z.flags&KONST)){ |
| int tmp=(r==tp)?ti:tp; |
| BSET(regs_modified,tmp); |
| p->z.flags&=~DREFOBJ; |
| move(f,&p->z,0,0,tmp,NPOINTER); |
| p->z.flags=(DREFOBJ|REG); |
| p->z.reg=tmp; |
| } |
| } |
| move(f,0,r,&p->z,0,t); |
| } |
| |
| static int scratchreg(int r,struct IC *p) |
| { |
| int c; |
| if(r==tp||r==ti||r==ti2||r==MTMP1||r==MTMP2) |
| return 1; |
| while(1){ |
| p=p->next; |
| if(!p||((c=p->code)==FREEREG&&p->q1.reg==r)) return 1; |
| if(c==CALL||(c>=BEQ&&c<=BRA)) return 0; |
| if((p->q1.flags®)&&p->q1.reg==r) return 0; |
| if((p->q2.flags®)&&p->q2.reg==r) return 0; |
| if((p->z.flags®)&&p->z.reg==r) return 0; |
| } |
| } |
| |
| static char *longcmd(char *s) |
| { |
| if(!strcmp(s,"add")) return "addc"; |
| if(!strcmp(s,"sub")) return "subc"; |
| /*FIXME*/ |
| return s; |
| } |
| |
| /* perform long arithmetic using library functions */ |
| /* the functions take arguments in r4/r5 and r10/r11 */ |
| /* giving the result in r4/r5 */ |
| /* returns , if the operation was performed, 0 if */ |
| /* the IC should be handled by inline-code */ |
| static int lib_larith(FILE *f,struct IC *p) |
| { |
| int r4p,r5p,c=p->code,t=ztyp(p);char *s; |
| if(regs[r4]&&(!isreg(z)||p->z.reg==r4r5)){ |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[r4]); |
| push(2,0); |
| r4p=1; |
| }else |
| r4p=0; |
| if(regs[r5]&&(!isreg(z)||p->z.reg==r4r5)){ |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[r5]); |
| push(2,0); |
| r5p=1; |
| }else |
| r5p=0; |
| if(!p->q1.am&&(p->q1.flags&DREFOBJ)){ |
| if(!(p->q1.flags&(REG))){ |
| if(ISLWORD(p->q1.dtyp)){ |
| tmp3=ti2;tmp4=ti;ti2_used=1; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| p->q1.flags&=~DREFOBJ; |
| move(f,&p->q1,0,0,MTMP2,FPOINTER); |
| p->q1.reg=MTMP2; |
| p->q1.flags=(REG|DREFOBJ); |
| }else if(!(p->q1.flags&KONST)){ |
| BSET(regs_modified,ti); |
| p->q1.flags&=~DREFOBJ; |
| move(f,&p->q1,0,0,ti,NPOINTER); |
| p->q1.reg=ti; |
| p->q1.flags=(REG|DREFOBJ); |
| } |
| } |
| } |
| BSET(regs_modified,r4r5); |
| move(f,&p->q1,0,0,r4r5,q1typ(p)); |
| if(!p->q2.am&&(p->q2.flags&DREFOBJ)){ |
| if(!(p->q2.flags&(REG))){ |
| if(ISLWORD(p->q2.dtyp)){ |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| tmp3=ti2;tmp4=ti;ti2_used=1; |
| p->q2.flags&=~DREFOBJ; |
| move(f,&p->q2,0,0,MTMP2,FPOINTER); |
| p->q2.reg=MTMP2; |
| p->q2.flags=(REG|DREFOBJ); |
| }else if(!(p->q2.flags&KONST)){ |
| BSET(regs_modified,ti); |
| p->q2.flags&=~DREFOBJ; |
| move(f,&p->q2,0,0,ti,NPOINTER); |
| p->q2.reg=ti; |
| p->q2.flags=(REG|DREFOBJ); |
| } |
| } |
| } |
| /* ti/ti2 must be r10/r11 */ |
| tmp3=ti;tmp4=ti2;ti2_used=1; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| move(f,&p->q2,0,0,MTMP2,q2typ(p)); |
| if(c==MULT) |
| s="_mul"; |
| else if(c==DIV&&(t&UNSIGNED)) |
| s="_udil"; |
| else if(c==DIV&&!(t&UNSIGNED)) |
| s="_sdil"; |
| else if(c==MOD&&(t&UNSIGNED)) |
| s="_umol"; |
| else if(c==MOD&&!(t&UNSIGNED)) |
| s="_smol"; |
| else |
| ierror(0); |
| if(TASKING){ |
| emit(f,"\textern\t%s%s:%s\n",idprefix,s,TINY?"near":"far"); |
| emit(f,"\t%s\t%s%s\n",call,idprefix,s); |
| } |
| save_result(f,r4r5,p,ztyp(p)); |
| if(r5p){ |
| emit(f,"\tmov\t%s,[%s+]\n",regnames[r5],regnames[sp]); |
| pop(2,0); |
| } |
| if(r4p){ |
| emit(f,"\tmov\t%s,[%s+]\n",regnames[r4],regnames[sp]); |
| pop(2,0); |
| } |
| return 1; |
| } |
| |
| /****************************************/ |
| /* End of private fata and functions. */ |
| /****************************************/ |
| |
| int emit_peephole(void) |
| { |
| int entries,i;long x,y,z; |
| char *asmline[EMIT_BUF_DEPTH]; |
| i=emit_l; |
| if(emit_f==0) |
| entries=i-emit_f+1; |
| else |
| entries=EMIT_BUF_DEPTH; |
| asmline[0]=emit_buffer[i]; |
| if(entries>=1){ |
| if(sscanf(asmline[0],"\tshl\tR%ld,#%ld\n",&x,&y)==2&&(y<0||y>15)){ |
| sprintf(asmline[0],"\tmov\tR%ld,#0\n",x); |
| return 1; |
| } |
| if(sscanf(asmline[0],"\tshr\tR%ld,#%ld\n",&x,&y)==2&&(y<0||y>15)){ |
| sprintf(asmline[0],"\tmov\tR%ld,#0\n",x); |
| return 1; |
| } |
| } |
| if(entries>=2){ |
| i--; |
| if(i<0) i=EMIT_BUF_DEPTH-1; |
| asmline[1]=emit_buffer[i]; |
| if(sscanf(asmline[0],"\tadd\tR0,#%ld",&x)==1&&sscanf(asmline[1],"\tadd\tR0,#%ld",&y)==1){ |
| sprintf(asmline[1],"\tadd\tR0,#%ld\n",x+y); |
| remove_asm(); |
| return 1; |
| } |
| if(sscanf(asmline[1],"\tmov\tR11,#%ld",&x)==1&&sscanf(asmline[0],"\texts\tR11,#%ld",&y)==1){ |
| sprintf(asmline[1],"\texts\t#%ld,#%ld\n",x,y); |
| remove_asm(); |
| return 1; |
| } |
| } |
| if(entries>=3){ |
| i--; |
| if(i<0) i=EMIT_BUF_DEPTH-1; |
| asmline[2]=emit_buffer[i]; |
| if(sscanf(asmline[2],"\tmov\tR1,#%ld",&x)==1&&sscanf(asmline[1],"\texts\t#%ld,#1",&y)==1&&sscanf(asmline[0],"\tmov\t[R1],R%ld",&z)==1){ |
| strcpy(asmline[2],asmline[1]); |
| sprintf(asmline[1],"\tmov\t%ld,R%ld\n",x,z); |
| remove_asm(); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| int init_cg(void) |
| /* Does necessary initializations for the code-generator. Gets called */ |
| /* once at the beginning and should return 0 in case of problems. */ |
| { |
| int i; |
| /* Initialize some values which cannot be statically initialized */ |
| /* because they are stored in the target's arithmetic. */ |
| maxalign=l2zm(2L); |
| char_bit=l2zm(8L); |
| for(i=0;i<=MAX_TYPE;i++){ |
| sizetab[i]=l2zm(msizetab[i]); |
| align[i]=l2zm(malign[i]); |
| } |
| for(i=1;i<=MAXR;i++){ |
| if(i<=16){ |
| regsize[i]=l2zm(2L);regtype[i]=&ityp; |
| }else{ |
| regsize[i]=l2zm(4L);regtype[i]=<yp; |
| } |
| } |
| |
| /* Initialize the min/max-settings. Note that the types of the */ |
| /* host system may be different from the target system and you may */ |
| /* only use the smallest maximum values ANSI guarantees if you */ |
| /* want to be portable. */ |
| /* That's the reason for the subtraction in t_min[INT]. Long could */ |
| /* be unable to represent -2147483648 on the host system. */ |
| t_min[CHAR]=l2zm(-128L); |
| t_min[SHORT]=l2zm(-32768L); |
| t_min[INT]=t_min[SHORT]; |
| t_min[LONG]=zmsub(l2zm(-2147483647L),l2zm(1L)); |
| t_min[LLONG]=zmlshift(l2zm(1L),l2zm(63L)); |
| t_min[MAXINT]=t_min(LLONG); |
| t_max[CHAR]=ul2zum(127L); |
| t_max[SHORT]=ul2zum(32767UL); |
| t_max[INT]=t_max[SHORT]; |
| t_max[LONG]=ul2zum(2147483647UL); |
| t_max[LLONG]=zumrshift(zumkompl(ul2zum(0UL)),ul2zum(1UL)); |
| t_max[MAXINT]=t_max(LLONG); |
| tu_max[CHAR]=ul2zum(255UL); |
| tu_max[SHORT]=ul2zum(65535UL); |
| tu_max[INT]=tu_max[SHORT]; |
| tu_max[LONG]=ul2zum(4294967295UL); |
| tu_max[LLONG]=zumkompl(ul2zum(0UL)); |
| tu_max[MAXINT]=t_max(UNSIGNED|LLONG); |
| |
| /* Reserve a few registers for use by the code-generator. */ |
| regsa[sp]=regsa[tp]=regsa[ti]=regsa[ti2]=1; |
| regscratch[sp]=regscratch[tp]=regscratch[ti]=regscratch[ti2]=0; |
| target_macros=marray; |
| if(TINY) marray[0]="__TINY__"; |
| else if(LARGE) marray[0]="__LARGE__"; |
| else if(HUGE) marray[0]="__HUGE__"; |
| else marray[0]="__MEDIUM__"; |
| |
| if(!TASKING){ |
| codename="\t.section\t.text,\"carx1\"\n"; |
| ndataname="\t.section\t.ndata,\"darw1\"\n"; |
| fdataname="\t.section\t.fdata,\"darw1\"\n"; |
| hdataname="\t.section\t.hdata,\"darw1\"\n"; |
| nbssname="\t.section\t.nbss,\"uarw1\"\n"; |
| fbssname="\t.section\t.fbss,\"uarw1\"\n"; |
| hbssname="\t.section\t.hbss,\"uarw1\"\n"; |
| ncdataname="\t.section\t.ncdata,\"dar1\"\n"; |
| fcdataname="\t.section\t.fcdata,\"dar1\"\n"; |
| hcdataname="\t.section\t.hcdata,\"dar1\"\n"; |
| bitsname="\t.section\t.bits,\"darw0\"\n"; |
| even="\t.align\t1\n"; |
| public=".global"; |
| comment="; "; |
| } |
| |
| nvar.storage_class=STATIC; |
| fvar.storage_class=STATIC; |
| |
| |
| /* TODO: set argument registers */ |
| declare_builtin("__mulint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__addint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__subint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__andint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__orint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__eorint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__negint64",LLONG,LLONG,0,0,0,1,0); |
| declare_builtin("__lslint64",LLONG,LLONG,0,INT,0,1,0); |
| |
| declare_builtin("__divsint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__divuint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0); |
| declare_builtin("__modsint64",LLONG,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__moduint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0); |
| declare_builtin("__lsrsint64",LLONG,LLONG,0,INT,0,1,0); |
| declare_builtin("__lsruint64",UNSIGNED|LLONG,UNSIGNED|LLONG,0,INT,0,1,0); |
| declare_builtin("__cmpsint64",INT,LLONG,0,LLONG,0,1,0); |
| declare_builtin("__cmpuint64",INT,UNSIGNED|LLONG,0,UNSIGNED|LLONG,0,1,0); |
| declare_builtin("__sint64toflt32",FLOAT,LLONG,0,0,0,1,0); |
| declare_builtin("__uint64toflt32",FLOAT,UNSIGNED|LLONG,0,0,0,1,0); |
| declare_builtin("__sint64toflt64",DOUBLE,LLONG,0,0,0,1,0); |
| declare_builtin("__uint64toflt64",DOUBLE,UNSIGNED|LLONG,0,0,0,1,0); |
| declare_builtin("__flt32tosint64",LLONG,FLOAT,0,0,0,1,0); |
| declare_builtin("__flt32touint64",UNSIGNED|LLONG,FLOAT,0,0,0,1,0); |
| declare_builtin("__flt64tosint64",LLONG,DOUBLE,0,0,0,1,0); |
| declare_builtin("__flt64touint64",UNSIGNED|LLONG,DOUBLE,0,0,0,1,0); |
| |
| declare_builtin("__flt32toflt64",DOUBLE,FLOAT,0,0,0,1,0); |
| declare_builtin("__flt64toflt32",FLOAT,DOUBLE,0,0,0,1,0); |
| |
| |
| declare_builtin("__addflt32",FLOAT,FLOAT,0,FLOAT,0,1,0); |
| declare_builtin("__subflt32",FLOAT,FLOAT,0,FLOAT,0,1,0); |
| declare_builtin("__mulflt32",FLOAT,FLOAT,0,FLOAT,0,1,0); |
| declare_builtin("__divflt32",FLOAT,FLOAT,0,FLOAT,0,1,0); |
| declare_builtin("__negflt32",FLOAT,FLOAT,0,FLOAT,0,1,0); |
| declare_builtin("__cmpflt32",INT,FLOAT,0,FLOAT,0,1,0); |
| |
| declare_builtin("__addflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0); |
| declare_builtin("__subflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0); |
| declare_builtin("__mulflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0); |
| declare_builtin("__divflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0); |
| declare_builtin("__negflt64",DOUBLE,DOUBLE,0,DOUBLE,0,1,0); |
| declare_builtin("__cmpflt64",INT,DOUBLE,0,DOUBLE,0,1,0); |
| |
| return 1; |
| } |
| |
| int freturn(struct Typ *t) |
| /* Returns the register in which variables of type t are returned. */ |
| /* If the value cannot be returned in a register returns 0. */ |
| { |
| int f=t->flags&NQ; |
| if(f==LLONG||f==DOUBLE||f==LDOUBLE) |
| return 0; |
| if(ISSCALAR(f)){ |
| if(f==LONG||f==FPOINTER||f==HPOINTER) |
| return 20; |
| else |
| return 5; |
| } |
| return 0; |
| } |
| |
| int regok(int r,int t,int mode) |
| /* Returns 0 if register r cannot store variables of */ |
| /* type t. If t==POINTER and mode!=0 then it returns */ |
| /* non-zero only if the register can store a pointer */ |
| /* and dereference a pointer to mode. */ |
| { |
| t&=NQ; |
| if(r==0) return(0); |
| if(mode>0&&!ISPOINTER(t)) return 0; |
| if(t==NPOINTER&&mode>0){ |
| if(r<=4) return 1; else return 0; |
| } |
| if(t<=CHAR&&r>8) return 0; |
| if((t<LONG||t==NPOINTER)&&r<=16) return 1; |
| if(t==LONG||t==FLOAT||t==FPOINTER||t==HPOINTER){ |
| if(r>16) return 1; |
| } |
| return 0; |
| } |
| |
| int reg_pair(int r,struct rpair *p) |
| /* Returns 0 if the register is no register pair. If r */ |
| /* is a register pair non-zero will be returned and the */ |
| /* structure pointed to p will be filled with the two */ |
| /* elements. */ |
| { |
| if(r<=16) return 0; |
| if(p){ |
| switch(r){ |
| case 17: p->r1=7;p->r2=8;break; |
| case 18: p->r1=8;p->r2=9;break; |
| case 19: p->r1=9;p->r2=10;break; |
| case 20: p->r1=5;p->r2=6;break; |
| case 21: p->r1=15;p->r2=16;break; |
| case 22: p->r1=14;p->r2=15;break; |
| case 23: p->r1=13;p->r2=14;break; |
| case 24: p->r1=4;p->r2=5;break; |
| case 25: p->r1=3;p->r2=4;break; |
| |
| /* pseudos */ |
| case MTMP1: p->r1=tmp1;p->r2=tmp2;break; |
| case MTMP2: p->r1=tmp3;p->r2=tmp4;break; |
| case ZEROS: return 0; |
| case ONES: return 0; |
| default: ierror(0); |
| } |
| } |
| return 1; |
| } |
| |
| int cost_savings(struct IC *p,int r,struct obj *o) |
| { |
| int c=p->code; |
| if((o->flags&DREFOBJ)){ |
| if(o->flags&VKONST) return 1; |
| if(r<=4&&p->q2.flags&&o!=&p->z) |
| return 6; |
| else |
| return 4; |
| }else if(o->flags&VKONST){ |
| struct obj *co=&o->v->cobj; |
| if((p->code==ASSIGN&&(p->z.flags&DREFOBJ))||p->code==PUSH) |
| return 4; |
| if(co->flags&VARADR) |
| return 4; |
| if(o==&p->q1) |
| eval_const(&co->val,q1typ(p)); |
| else |
| eval_const(&co->val,q2typ(p)); |
| /*FIXME*/ |
| return 0; |
| }else if(c==GETRETURN&&p->q1.reg==r){ |
| return 4; |
| }else if(c==SETRETURN&&p->z.reg==r){ |
| return 4; |
| }else if(c==CONVERT&&((p->typf&NQ)==CHAR||(p->typf2&NQ)==CHAR)&®ok(r,CHAR,0)){ |
| return 3; |
| } |
| return 2; |
| } |
| |
| int dangerous_IC(struct IC *p) |
| /* Returns zero if the IC p can be safely executed */ |
| /* without danger of exceptions or similar things. */ |
| /* vbcc may generate code in which non-dangerous ICs */ |
| /* are sometimes executed although control-flow may */ |
| /* never reach them (mainly when moving computations */ |
| /* out of loops). */ |
| /* Typical ICs that generate exceptions on some */ |
| /* machines are: */ |
| /* - accesses via pointers */ |
| /* - division/modulo */ |
| /* - overflow on signed integer/floats */ |
| { |
| int c=p->code; |
| if((p->q1.flags&DREFOBJ)||(p->q2.flags&DREFOBJ)||(p->z.flags&DREFOBJ)) |
| return 1; |
| if((c==DIV||c==MOD)&&!isconst(q2)) |
| return 1; |
| return 0; |
| } |
| |
| int must_convert(int o,int t,int const_expr) |
| /* Returns zero if code for converting np to type t */ |
| /* can be omitted. */ |
| /* In this generic 32bit RISC cpu pointers and 32bit */ |
| /* integers have the same representation and can use */ |
| /* the same registers. */ |
| { |
| int op=o&NQ,tp=t&NQ; |
| if(op==tp) return 0; |
| if(ISHWORD(op)&&ISHWORD(tp)) return 0; |
| if(ISFLOAT(op)||ISFLOAT(tp)) return 1; |
| if(ISLWORD(op)&&ISLWORD(tp)) return 0; |
| return 1; |
| } |
| |
| void gen_ds(FILE *f,zmax size,struct Typ *t) |
| /* This function has to create <size> bytes of storage */ |
| /* initialized with zero. */ |
| { |
| #if 0 |
| emit(f,"\tds\t%ld\n",zm2l(size)); |
| #endif |
| /*FIXME: we currently do not use ds because of initialization */ |
| long l=zm2l(size); |
| if(TASKING){ |
| if(t&&(t->flags&NQ)==BIT){ |
| emit(f,"\tdbit\n"); |
| return; |
| } |
| /*FIXME:alignment while(size>=4) {emit(f,"\tddw\t0\n");size-=4;}*/ |
| while(size--) emit(f,"\tdb\t0\n"); |
| }else{ |
| if(newobj&§ion!=SPECIAL) |
| emit(f,"%ld\n",zm2l(size)); |
| else |
| emit(f,"\t.space\t%ld\n",zm2l(size)); |
| newobj=0; |
| } |
| } |
| |
| void gen_align(FILE *f,zmax align) |
| /* This function has to make sure the next data is */ |
| /* aligned to multiples of <align> bytes. */ |
| { |
| if(section!=BITS&&!zmleq(align,l2zm(1L))) |
| emit(f,even); |
| } |
| static void new_section(FILE *f,int nsec) |
| { |
| if(!f||section==nsec) return; |
| if(TASKING) |
| emit(f,sec_end); |
| section=nsec; |
| if(nsec==HDATA){ |
| emit(f,hdataname); |
| strcpy(sec_end,ehdata); |
| }else if(nsec==FDATA){ |
| emit(f,fdataname); |
| strcpy(sec_end,efdata); |
| }else if(nsec==NDATA){ |
| emit(f,ndataname); |
| strcpy(sec_end,endata); |
| }else if(nsec==HCDATA){ |
| emit(f,hcdataname); |
| strcpy(sec_end,ehcdata); |
| }else if(nsec==FCDATA){ |
| emit(f,fcdataname); |
| strcpy(sec_end,efcdata); |
| }else if(nsec==NCDATA){ |
| emit(f,ncdataname); |
| strcpy(sec_end,encdata); |
| }else if(nsec==HBSS){ |
| emit(f,hbssname); |
| strcpy(sec_end,ehbss); |
| }else if(nsec==FBSS){ |
| emit(f,fbssname); |
| strcpy(sec_end,efbss); |
| }else if(nsec==NBSS){ |
| emit(f,nbssname); |
| strcpy(sec_end,enbss); |
| }else if(nsec==BITS){ |
| emit(f,bitsname); |
| strcpy(sec_end,ebits); |
| } |
| } |
| void gen_var_head(FILE *f,struct Var *v) |
| /* This function has to create the head of a variable */ |
| /* definition, i.e. the label and information for */ |
| /* linkage etc. */ |
| { |
| int constflag; |
| char *attr;struct Typ *tv; |
| tv=v->vtyp; |
| while(tv->flags==ARRAY) tv=tv->next; |
| attr=tv->attr; |
| if(v->clist) constflag=is_const(v->vtyp); |
| if(v->storage_class==STATIC){ |
| if(ISFUNC(v->vtyp->flags)) return; |
| if(!TASKING){ |
| emit(f,"\t.type\t%s%ld,@object\n",labprefix,zm2l(v->offset)); |
| emit(f,"\t.size\t%s%ld,%ld\n",labprefix,zm2l(v->offset),zm2l(szof(v->vtyp))); |
| } |
| if(!special_section(f,v)){ |
| if((v->vtyp->flags&NQ)==BIT){ |
| new_section(f,BITS); |
| }else{ |
| if(v->clist&&(!constflag||(g_flags[3]&USEDFLAG))){ |
| if(attr&&strstr(attr,STR_HUGE)) |
| new_section(f,HDATA); |
| else if(attr&&strstr(attr,STR_FAR)) |
| new_section(f,FDATA); |
| else if(attr&&strstr(attr,STR_NEAR)) |
| new_section(f,NDATA); |
| else{ |
| if(HUGE) |
| new_section(f,HDATA); |
| else if(LARGE) |
| new_section(f,FDATA); |
| else |
| new_section(f,NDATA); |
| } |
| } |
| if(v->clist&&constflag&&!(g_flags[3]&USEDFLAG)){ |
| if(attr&&strstr(attr,STR_HUGE)) |
| new_section(f,HCDATA); |
| else if(attr&&strstr(attr,STR_FAR)) |
| new_section(f,FCDATA); |
| else if(attr&&strstr(attr,STR_NEAR)) |
| new_section(f,NCDATA); |
| else{ |
| if(HUGE) |
| new_section(f,HCDATA); |
| else if(LARGE) |
| new_section(f,FCDATA); |
| else |
| new_section(f,NCDATA); |
| } |
| } |
| if(!v->clist){ |
| if(attr&&strstr(attr,STR_HUGE)) |
| new_section(f,HBSS); |
| else if(attr&&strstr(attr,STR_FAR)) |
| new_section(f,FBSS); |
| else if(attr&&strstr(attr,STR_NEAR)) |
| new_section(f,NBSS); |
| else{ |
| if(HUGE) |
| new_section(f,HBSS); |
| else if(LARGE) |
| new_section(f,FBSS); |
| else |
| new_section(f,NBSS); |
| } |
| } |
| } |
| } |
| gen_align(f,falign(v->vtyp)); |
| if(TASKING){ |
| emit(f,"%s%ld\tlabel\t",labprefix,zm2l(v->offset)); |
| emit_label_type(f,v); |
| emit(f,"\n"); |
| }else{ |
| if(dppuse(v,section)>=0) |
| emit(f,"\t.set\t%s%s%ld,%d\n",dppprefix,labprefix,zm2l(v->offset),dppuse(v,section)); |
| emit(f,"%s%ld:\n",labprefix,zm2l(v->offset)); |
| } |
| } |
| if(v->storage_class==EXTERN){ |
| if(v->flags&(DEFINED|TENTATIVE)){ |
| if(!TASKING){ |
| emit(f,"\t.type\t%s%s,@object\n",idprefix,v->identifier); |
| emit(f,"\t.size\t%s%s,%ld\n",idprefix,v->identifier,zm2l(szof(v->vtyp))); |
| } |
| emit(f,"\t%s\t%s%s\n",public,idprefix,v->identifier); |
| if(!special_section(f,v)){ |
| if((v->vtyp->flags&NQ)==BIT){ |
| if(f&§ion!=BITS){ |
| if(TASKING) |
| emit(f,sec_end); |
| strcpy(sec_end,ebits); |
| emit(f,bitsname); |
| section=BITS; |
| } |
| }else{ |
| if(v->clist&&(!constflag||(g_flags[3]&USEDFLAG))){ |
| if(attr&&strstr(attr,STR_HUGE)) |
| new_section(f,HDATA); |
| else if(attr&&strstr(attr,STR_FAR)) |
| new_section(f,FDATA); |
| else if(attr&&strstr(attr,STR_NEAR)) |
| new_section(f,NDATA); |
| else{ |
| if(HUGE) |
| new_section(f,HDATA); |
| else if(LARGE) |
| new_section(f,FDATA); |
| else |
| new_section(f,NDATA); |
| } |
| } |
| if(v->clist&&constflag&&!(g_flags[3]&USEDFLAG)){ |
| if(attr&&strstr(attr,STR_HUGE)) |
| new_section(f,HCDATA); |
| else if(attr&&strstr(attr,STR_FAR)) |
| new_section(f,FCDATA); |
| else if(attr&&strstr(attr,STR_NEAR)) |
| new_section(f,NCDATA); |
| else{ |
| if(HUGE) |
| new_section(f,HCDATA); |
| else if(LARGE) |
| new_section(f,FCDATA); |
| else |
| new_section(f,NCDATA); |
| } |
| } |
| if(!v->clist){ |
| if(attr&&strstr(attr,STR_HUGE)) |
| new_section(f,HBSS); |
| else if(attr&&strstr(attr,STR_FAR)) |
| new_section(f,FBSS); |
| else if(attr&&strstr(attr,STR_NEAR)) |
| new_section(f,NBSS); |
| else{ |
| if(HUGE) |
| new_section(f,HBSS); |
| else if(LARGE) |
| new_section(f,FBSS); |
| else |
| new_section(f,NBSS); |
| } |
| } |
| } |
| } |
| gen_align(f,falign(v->vtyp)); |
| if(TASKING){ |
| emit(f,"%s%s\tlabel\t",idprefix,v->identifier); |
| emit_label_type(f,v); |
| emit(f,"\n"); |
| }else{ |
| if(dppuse(v,section)>=0){ |
| emit(f,"\t.global\t%s%s%s\n",dppprefix,idprefix,v->identifier); |
| emit(f,"\t.set\t%s%s%s,%d\n",dppprefix,idprefix,v->identifier,dppuse(v,section)); |
| } |
| emit(f,"%s%s:\n",idprefix,v->identifier); |
| } |
| }else if(strcmp(v->identifier,"__va_start")&&!issfrv(v)&&!isesfrv(v)&&!issfrbitv(v)&&!isesfrbitv(v)){ |
| if(TASKING){ |
| emit(f,"\textern\t%s%s:",idprefix,v->identifier); |
| emit_label_type(f,v); |
| emit(f,"\n"); |
| }else{ |
| emit(f,"\t.global\t%s%s\n",idprefix,v->identifier); |
| } |
| } |
| } |
| } |
| |
| void gen_dc(FILE *f,int t,struct const_list *p) |
| /* This function has to create static storage */ |
| /* initialized with const-list p. */ |
| { |
| if(ISPOINTER(t)){ |
| if(p->tree) |
| emit(f,"\t%s\t",TASKING?dct[t&NQ]:vdct[t&NQ]); |
| if(ISLWORD(t)) |
| t=UNSIGNED|LONG; |
| else |
| t=UNSIGNED|SHORT; |
| if(!p->tree) |
| emit(f,"\t%s\t",TASKING?dct[t&NQ]:vdct[t&NQ]); |
| }else{ |
| emit(f,"\t%s\t",TASKING?dct[t&NQ]:vdct[t&NQ]); |
| } |
| if(!p->tree){ |
| if(ISFLOAT(t)){ |
| /* auch wieder nicht sehr schoen und IEEE noetig */ |
| unsigned char *ip; |
| |
| ip=(unsigned char *)&p->val.vdouble; |
| emit(f,"0x%02x%02x%02x%02x",ip[3],ip[2],ip[1],ip[0]); |
| if((t&NQ)==DOUBLE||(t&NQ)==LDOUBLE){ |
| emit(f,",0x%02x%02x%02x%02x",ip[7],ip[6],ip[5],ip[4]); |
| } |
| }else{ |
| if(ISLWORD(t)){ |
| long l; |
| eval_const(&p->val,t); |
| l=zm2l(zmand(p->val.vmax,l2zm(65535L))); |
| emit(f,"%ld",l); |
| l=zm2l(zmand(zmrshift(p->val.vmax,l2zm(16L)),l2zm(65535L))); |
| emit(f,",%ld",l); |
| }else if((t&NQ)!=BIT) |
| /*FIXME: initialization of bits impossible */ |
| emitval(f,&p->val,(t&NU)|UNSIGNED); |
| } |
| }else{ |
| int m=p->tree->o.flags; |
| p->tree->o.flags&=~VARADR; |
| emit_obj(f,&p->tree->o,t&NU); |
| p->tree->o.flags=m; |
| } |
| emit(f,"\n"); |
| } |
| |
| /* The main code-generation routine. */ |
| /* f is the stream the code should be written to. */ |
| /* p is a pointer to a doubly linked list of ICs */ |
| /* containing the function body to generate code for. */ |
| /* v is a pointer to the function. */ |
| /* offset is the size of the stackframe the function */ |
| /* needs for local variables. */ |
| void gen_code(FILE *f,struct IC *p,struct Var *v,zmax offset) |
| { |
| int c,t,lastcomp=0,reg,short_add,bit_reverse,need_return=0; |
| struct obj *bit_obj;char *bit_reg; |
| static int idone; |
| struct obj o,*cc=0;int cc_t; |
| struct IC *p2; |
| if(TINY){ |
| ret="ret"; |
| call="calla\tcc_uc,"; |
| jump="jmpa\tcc_uc,"; |
| }else{ |
| ret="rets"; |
| call="calls"; |
| jump="jmps\t"; |
| } |
| if(v->tattr&INTERRUPT) |
| ret="reti"; |
| if(DEBUG&1) printf("gen_code()\n"); |
| if(!v->fi) v->fi=new_fi(); |
| v->fi->flags|=ALL_REGS; |
| if(f&&TASKING&&!idone){ |
| emit(f,"$EXTEND\n"); |
| emit(f,"$MODEL(SMALL)\n"); |
| idone=1; |
| } |
| for(p2=p;p2;p2=p2->next) clear_ext_ic(&p2->ext); |
| if(!(g_flags[5]&USEDFLAG)){ |
| peephole(p); |
| if(!frame_used) offset=l2zm(0L); |
| } |
| for(c=1;c<=15;c++) regs[c]=regsa[c]; |
| regs[16]=0; |
| for(c=1;c<=MAXR;c++){ |
| if(regscratch[c]&&(regsa[c]||regused[c])){ |
| BSET(regs_modified,c); |
| } |
| } |
| loff=((zm2l(offset)+1)/2)*2; |
| function_top(f,v,loff); |
| usrstackoffset=sysstackoffset=notpopped=dontpop=usrmaxpushed=sysmaxpushed=0; |
| sysstack=usrstack=0; |
| for(;p;pr(f,p),p=p->next){ |
| if((p->q1.flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)){ |
| p->q1.flags=VAR; |
| p->q1.v=ISLWORD(p->q1.dtyp)?&fvar:&nvar; |
| } |
| if((p->q2.flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)){ |
| p->q2.flags=VAR; |
| p->q2.v=ISLWORD(p->q2.dtyp)?&fvar:&nvar; |
| } |
| if((p->z.flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)){ |
| p->z.flags=VAR; |
| p->z.v=ISLWORD(p->z.dtyp)?&fvar:&nvar; |
| } |
| if(!TASKING){ |
| int rn,rb;char *rs; |
| if(issfr(q1)){ |
| rs=strstr(p->q1.v->vattr,"sfr("); |
| sscanf(rs+4,"%i",&rn); |
| if(rn<=255) rn=0xfe00+2*rn; |
| emit(f,"\t.sfr\t%s,%d\n",p->q1.v->identifier,rn); |
| } |
| if(issfr(q2)){ |
| rs=strstr(p->q2.v->vattr,"sfr("); |
| sscanf(rs+4,"%i",&rn); |
| if(rn<=255) rn=0xfe00+2*rn; |
| emit(f,"\t.sfr\t%s,%d\n",p->q2.v->identifier,rn); |
| } |
| if(issfr(z)){ |
| rs=strstr(p->z.v->vattr,"sfr("); |
| sscanf(rs+4,"%i",&rn); |
| if(rn<=255) rn=0xfe00+2*rn; |
| emit(f,"\t.sfr\t%s,%d\n",p->z.v->identifier,rn); |
| } |
| if(issfrbit(q1)){ |
| rs=strstr(p->q1.v->vattr,"sfrbit("); |
| sscanf(rs+7,"%i,%i",&rn,&rb); |
| if(rn<=255) rn=0xfe00+2*rn; |
| emit(f,"\t.sfr\t%s,%d,%d\n",p->q1.v->identifier,rn,rb); |
| } |
| if(issfrbit(q2)){ |
| rs=strstr(p->q2.v->vattr,"sfrbit("); |
| sscanf(rs+7,"%i,%i",&rn,&rb); |
| if(rn<=255) rn=0xfe00+2*rn; |
| emit(f,"\t.sfr\t%s,%d,%d\n",p->q2.v->identifier,rn,rb); |
| } |
| if(issfrbit(z)){ |
| rs=strstr(p->z.v->vattr,"sfrbit("); |
| sscanf(rs+7,"%i,%i",&rn,&rb); |
| if(rn<=255) rn=0xfe00+2*rn; |
| emit(f,"\t.sfr\t%s,%d,%d\n",p->z.v->identifier,rn,rb); |
| } |
| if(isesfr(q1)){ |
| rs=strstr(p->q1.v->vattr,"sfre("); |
| sscanf(rs+5,"%i",&rn); |
| if(rn<=255) rn=0xf000+2*rn; |
| emit(f,"\t.equ\t%s,%d\n",p->q1.v->identifier,rn); |
| } |
| if(isesfr(q2)){ |
| rs=strstr(p->q2.v->vattr,"sfre("); |
| sscanf(rs+5,"%i",&rn); |
| if(rn<=255) rn=0xf000+2*rn; |
| emit(f,"\t.equ\t%s,%d\n",p->q2.v->identifier,rn); |
| } |
| if(isesfr(z)){ |
| rs=strstr(p->z.v->vattr,"sfre("); |
| sscanf(rs+5,"%i",&rn); |
| if(rn<=255) rn=0xf000+2*rn; |
| emit(f,"\t.equ\t%s,%d\n",p->z.v->identifier,rn); |
| } |
| if(isesfrbit(q1)){ |
| rs=strstr(p->q1.v->vattr,"sfrbite("); |
| sscanf(rs+8,"%i,%i",&rn,&rb); |
| if(rn<=255) rn=0xf000+2*rn; |
| emit(f,"\t.sfr\t%s,%d,%d\n",p->q1.v->identifier,rn,rb); |
| } |
| if(isesfrbit(q2)){ |
| rs=strstr(p->q2.v->vattr,"sfrbite("); |
| sscanf(rs+8,"%i,%i",&rn,&rb); |
| if(rn<=255) rn=0xf000+2*rn; |
| emit(f,"\t.sfr\t%s,%d,%d\n",p->q2.v->identifier,rn,rb); |
| } |
| if(isesfrbit(z)){ |
| rs=strstr(p->z.v->vattr,"sfrbite("); |
| sscanf(rs+8,"%i,%i",&rn,&rb); |
| if(rn<=255) rn=0xf000+2*rn; |
| emit(f,"\t.sfr\t%s,%d,%d\n",p->z.v->identifier,rn,rb); |
| } |
| } |
| |
| c=p->code;t=p->typf; |
| ti2_used=0; short_add=0; |
| if(c==NOP) continue; |
| if(c==ALLOCREG){ |
| regs[p->q1.reg]=1; |
| if(reg_pair(p->q1.reg,&rp)) regs[rp.r1]=regs[rp.r2]=1; |
| BSET(regs_modified,p->q1.reg); |
| continue; |
| } |
| if(c==FREEREG){ |
| regs[p->q1.reg]=0; |
| if(reg_pair(p->q1.reg,&rp)) regs[rp.r1]=regs[rp.r2]=0; |
| continue; |
| } |
| if(notpopped&&!dontpop){ |
| int flag=0; |
| if(c==LABEL||c==COMPARE||c==TEST||c==BRA){ |
| emit(f,"\tadd\t%s,#%ld\n",regnames[sp],notpopped); |
| pop(notpopped,0);notpopped=0;cc=0; |
| } |
| } |
| if(c==LABEL) {cc=0;emit(f,"%s%d:\n",labprefix,t);continue;} |
| if(c>=BEQ&&c<=BGT&&t==exit_label) need_return=1; |
| if(c==BRA){ |
| if(p->typf==exit_label&&!have_frame){ |
| emit(f,"\t%s\n",ret); |
| }else{ |
| if(t==exit_label) need_return=1; |
| emit(f,"\tjmpr\tcc_uc,%s%d\n",labprefix,t); |
| } |
| cc=0;continue; |
| } |
| if(c==BEQ||c==BNE){ |
| if(p->ext.flags==EXT_IC_BTST){ |
| if(bit_reg){ |
| emit(f,"\tj%sb\t%s.%ld,%s%d\n",(c==BEQ)?"n":"",bit_reg,p->ext.offset,labprefix,t); |
| }else{ |
| if(!bit_obj) ierror(0); |
| emit(f,"\tj%sb\t",(c==BEQ)?"n":""); |
| emit_obj(f,bit_obj,t);emit(f,".%ld,%s%d\n",p->ext.offset,labprefix,t); |
| } |
| }else if(lastcomp==BIT){ |
| if(c==BEQ) bit_reverse=1-bit_reverse; |
| emit(f,"\tj%sb\t",(bit_reverse==1)?"n":""); |
| if(bit_obj) |
| emit_obj(f,bit_obj,t); |
| else |
| emit(f,"%s",bit_reg); |
| emit(f,",%s%d\n",labprefix,t); |
| }else |
| emit(f,"\tjmpr\tcc_%s,%s%d\n",ccs[c-BEQ],labprefix,t); |
| cc=0;continue; |
| } |
| if(c>BNE&&c<BRA){ |
| if(p->ext.flags==EXT_IC_BTST||lastcomp==BIT) ierror(0); |
| if(lastcomp&UNSIGNED) emit(f,"\tjmpr\tcc_u%s,%s%d\n",ccs[c-BEQ],labprefix,t); |
| else emit(f,"\tjmpr\tcc_s%s,%s%d\n",ccs[c-BEQ],labprefix,t); |
| cc=0;continue; |
| } |
| if(c==MOVETOREG){ |
| move(f,&p->q1,0,0,p->z.reg,SHORT); |
| cc=&p->q1;cc_t=SHORT;continue; |
| } |
| if(c==MOVEFROMREG){ |
| move(f,0,p->q1.reg,&p->z,0,SHORT); |
| cc=&p->z;cc_t=SHORT;continue; |
| } |
| |
| if((t&NQ)==DOUBLE) {pric2(stdout,p);ierror(0);} |
| if((t&NQ)==BIT){ |
| cc=0; |
| if(c==ASSIGN){ |
| if(!isreg(z)&&((p->z.flags&(VAR|REG|DREFOBJ|VARADR))!=VAR||!ISSTATIC(p->z.v))) ierror(0); |
| move(f,&p->q1,0,&p->z,0,t); |
| continue; |
| } |
| if(c==COMPARE){ |
| if(!isconst(q2)){ |
| if(!isreg(q2)&&((p->q2.flags&(VAR|REG|DREFOBJ|VARADR))!=VAR||!ISSTATIC(p->q2.v))) ierror(0); |
| bit_reg="PSW.1";bit_obj=0;lastcomp=BIT;bit_reverse=1; |
| if(isesfrbit(q1)){ |
| if(!isesfrbit(q2)&&!isreg(q2)){ |
| move(f,&p->q1,0,0,ti,t); |
| emit(f,"\tbcmp\t%s.0,",regnames[ti]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| continue; |
| }else |
| emit(f,"\textr\t#1\n"); |
| }else if(isesfrbit(q2)){ |
| if(!isreg(q1)){ |
| move(f,&p->q2,0,0,ti,t); |
| emit(f,"\tbcmp\t"); |
| emit_obj(f,&p->q1,t); |
| emit(f,",%s.0\n",regnames[ti]); |
| continue; |
| }else |
| emit(f,"\textr\t#1\n"); |
| } |
| emit(f,"\tbcmp\t");emit_obj(f,&p->q1,t); |
| emit(f,",");emit_obj(f,&p->q2,t);emit(f,"\n"); |
| }else{ |
| bit_reg=0;bit_obj=&p->q1;lastcomp=BIT; |
| eval_const(&p->q2.val,t); |
| if(ISNULL()) |
| bit_reverse=0; |
| else |
| bit_reverse=1; |
| if(isesfrbit(q1)) emit(f,"\textr\t#1\n"); |
| } |
| continue; |
| } |
| if(c==TEST){ |
| bit_reg=0;bit_obj=&p->q1;bit_reverse=0;lastcomp=BIT; |
| if(isesfrbit(q1)) emit(f,"\textr\t#1\n"); |
| continue; |
| } |
| if(c==AND||c==OR||c==XOR){ |
| char *s; |
| if(compare_objects(&p->z,&p->q2)){ |
| struct obj m; |
| m=p->q1;p->q1=p->q2;p->q2=m; |
| } |
| if(!compare_objects(&p->q1,&p->z)) |
| move(f,&p->q1,0,&p->z,0,t); |
| /*FIXME: const, esfr etc. */ |
| if(c==AND) s="band"; |
| else if(c==OR) s="bor"; |
| else s="bxor"; |
| if(isesfrbit(q2)&&!isesfrbit(z)&&!isreg(z)){ |
| move(f,&p->q2,0,0,ti,t); |
| emit(f,"\t%s\t",s); |
| emit_obj(f,&p->z,t); |
| emit(f,",%s.0\n",regnames[ti]); |
| }else if(isesfrbit(z)&&!isesfrbit(q2)&&!isreg(q2)){ |
| move(f,&p->q2,0,0,ti,t); |
| emit(f,"\textr\t#1\n"); |
| emit(f,"\t%s\t",s); |
| emit_obj(f,&p->z,t); |
| emit(f,",%s.0\n",regnames[ti]); |
| }else{ |
| if(isesfrbit(z)) emit(f,"\textr\t#1\n"); |
| emit(f,"\t%s\t",s); |
| emit_obj(f,&p->z,t);emit(f,","); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| } |
| continue; |
| } |
| if(c!=CONVERT) ierror(0); |
| } |
| |
| if(c==TEST){ |
| lastcomp=t; |
| if(p->ext.flags==EXT_IC_CMPIA){ |
| if(p->ext.offset<0) |
| emit(f,"\tsub\t%s,#%ld\n",regnames[p->ext.r],-p->ext.offset); |
| else |
| emit(f,"\tadd\t%s,#%ld\n",regnames[p->ext.r],p->ext.offset); |
| cc=0;continue; |
| } |
| if(p->ext.flags==EXT_IC_CMPIB){ |
| if(p->ext.offset<0) |
| emit(f,"\tcmpd%ld\t%s,#0\n",-p->ext.offset,regnames[p->ext.r]); |
| else |
| emit(f,"\tcmpi%ld\t%s,#0\n",p->ext.offset,regnames[p->ext.r]); |
| cc=0;continue; |
| } |
| if(cc&&(cc_t&NU)==(t&NU)&&compare_objects(cc,&p->q1)){ |
| continue; |
| } |
| p->code=c=COMPARE; |
| gval.vmax=l2zm(0L); |
| p->q2.flags=KONST; |
| eval_const(&gval,MAXINT); |
| insert_const(&p->q2.val,t); |
| } |
| if(c==COMPARE&&isconst(q1)){ |
| struct IC *p2; |
| o=p->q1;p->q1=p->q2;p->q2=o; |
| p2=p->next; |
| while(p2&&p2->code==FREEREG) p2=p2->next; |
| if(!p2||p2->code<BEQ||p2->code>BGT) ierror(0); |
| if(p2->code==BLT) p2->code=BGT; |
| else if(p2->code==BGT) p2->code=BLT; |
| else if(p2->code==BLE) p2->code=BGE; |
| else if(p2->code==BGE) p2->code=BLE; |
| } |
| if(c==COMPARE&&p->ext.flags==EXT_IC_CMPIA){ |
| long l; |
| if(!isconst(q2)) ierror(0); |
| eval_const(&p->q2.val,t); |
| l=zm2l(vmax); |
| if(p->ext.offset<0) |
| emit(f,"\tcmpd%ld\t%s,#%ld\n",-p->ext.offset,regnames[p->ext.r],l-p->ext.offset); |
| else |
| emit(f,"\tcmpi%ld\t%s,#%ld\n",p->ext.offset,regnames[p->ext.r],l-p->ext.offset); |
| cc=0;lastcomp=t;continue; |
| } |
| if(c==COMPARE&&p->ext.flags==EXT_IC_CMPIB){ |
| pric2(stdout,p); |
| if(p->ext.offset<0) |
| emit(f,"\tcmpd%ld\t%s,",-p->ext.offset,regnames[p->ext.r]); |
| else |
| emit(f,"\tcmpi%ld\t%s,",p->ext.offset,regnames[p->ext.r]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| cc=0;lastcomp=t;continue; |
| } |
| if(c==COMPARE&&isconst(q2)){ |
| eval_const(&p->q2.val,t); |
| if(ISNULL()){ |
| if(cc&&(cc_t&NU)==(t&NU)&&compare_objects(cc,&p->q1)){ |
| lastcomp=t;continue; |
| } |
| } |
| } |
| |
| if(c==SUBPFP){ |
| p->code=c=SUB; |
| if((p->typf2&NQ)==NPOINTER) p->typf=t=INT; |
| else if((p->typf2&NQ)==HPOINTER) p->typf=t=LONG; |
| else ierror(0); |
| if((p->typf2&NQ)==NPOINTER){ |
| cc=&p->z;cc_t=NPOINTER; |
| }else{ |
| cc=0; |
| } |
| } |
| |
| if(c==ADDI2P||c==SUBIFP){ |
| /*if(c==ADDI2P) p->code=c=ADD; else p->code=c=SUB;*/ |
| if((p->typf2&NQ)!=HPOINTER){ |
| p->typf=t=(UNSIGNED|SHORT); |
| short_add=2; |
| if(isreg(q2)&®_pair(p->q2.reg,&rp)){ |
| /*FIXME:warning*/ |
| p->q2.reg=rp.r1; |
| } |
| }else if(ISHWORD(t)){ |
| p->typf=t=(UNSIGNED|LONG); |
| short_add=1; |
| } |
| if((p->typf2&NQ)==NPOINTER){ |
| cc=&p->z;cc_t=NPOINTER; |
| }else{ |
| cc=0; |
| } |
| } |
| /* try to avoid z==q2 */ |
| if((c==ADD||c==AND||c==OR||c==XOR||(c==ADDI2P&&!short_add))&&compare_objects(&p->q2,&p->z)){ |
| o=p->q1;p->q1=p->q2;p->q2=o; |
| } |
| /* DREFOBJs nach q2, um evtl. op reg,[ri] zu nutzen */ |
| if(c==ADD||c==MULT||c==OR||c==AND||c==XOR){ |
| if(isreg(q2)&&scratchreg(p->q2.reg,p)){ |
| o=p->q1;p->q1=p->q2;p->q2=o; |
| } |
| if((p->q1.flags&DREFOBJ)&&(!(p->q1.flags®)||p->q1.reg<=4)&&(!p->q1.am||p->q1.am->flags!=IMM_IND)){ |
| if(!((p->q2.flags&DREFOBJ)&&(!p->q2.am||p->q2.am->flags!=IMM_IND))){ |
| struct obj o; |
| o=p->q1;p->q1=p->q2;p->q2=o; |
| } |
| } |
| } |
| /*FIXME: ICs mit mehreren Typen*/ |
| if(switch_IC(p)&&isreg(z)){ |
| reg=p->z.reg; |
| }else if(isreg(q1)&&(!ISLWORD(t)||reg_pair(p->q1.reg,&rp))&&(scratchreg(p->q1.reg,p)||(isreg(z)&&p->z.reg==p->q1.reg)||(!ISLWORD(t)&&c==COMPARE))){ |
| reg=p->q1.reg; |
| }else{ |
| if(ISLWORD(ztyp(p))){ |
| tmp1=ti;tmp2=ti2;ti2_used=1; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| reg=MTMP1; |
| }else{ |
| if((t&NQ)==CHAR){ |
| BSET(regs_modified,tp); |
| reg=tp; |
| }else{ |
| BSET(regs_modified,ti); |
| reg=ti; |
| } |
| } |
| } |
| /* op reg,mem/const */ |
| if(issfr(z)&&(c==ADD||c==SUB||c==AND||c==OR||c==XOR||c==ADDI2P)&&(compare_objects(&p->q1,&p->z)||((c!=SUB&&c!=SUBIFP)&&compare_objects(&p->q2,&p->z)))){ |
| char *s; |
| if(!compare_objects(&p->q1,&p->z)){o=p->q1;p->q1=p->q2;p->q2=o;} |
| if((p->q2.flags&(KONST|DREFOBJ))==KONST||((p->q2.flags&(VAR|DREFOBJ))==VAR&&ISSTATIC(p->q2.v))){ |
| if(c>=OR&&c<=AND){ |
| s=logicals[c-OR]; |
| }else{ |
| if(c==ADDI2P) |
| s=arithmetics[ADD-LSHIFT]; |
| else if(c==SUBIFP) |
| s=arithmetics[SUB-LSHIFT]; |
| else |
| s=arithmetics[c-LSHIFT]; |
| } |
| if((p->q2.flags&VAR)&&ISFAR(p->q2.v)){ |
| emit(f,"\texts\t#SEG ");isseg=1;emit_obj(f,&p->q2,t);emit(f,",#1\n"); |
| } |
| emit(f,"\t%s%s\t",s,(t&NQ)==CHAR?"b":""); |
| emit_obj(f,&p->q1,t); |
| emit(f,","); |
| emit_obj(f,&p->q2,t); |
| emit(f,"\n"); |
| cc=&p->z;cc_t=t; |
| continue; |
| } |
| } |
| /* op mem,reg */ |
| if((c==ADD||c==SUB||c==AND||c==OR||c==XOR||c==ADDI2P)&&(compare_objects(&p->q1,&p->z)||((c!=SUB&&c!=SUBIFP)&&compare_objects(&p->q2,&p->z)))&&(p->z.flags&(VAR|VARADR|DREFOBJ|REG))==VAR&&ISSTATIC(p->z.v)){ |
| char *s; |
| if(!compare_objects(&p->q1,&p->z)){o=p->q1;p->q1=p->q2;p->q2=o;} |
| cc=&p->z;cc_t=t; |
| if(isreg(q2)){ |
| reg=p->q2.reg; |
| }else if(issfr(q2)){ |
| reg=0; |
| }else if(isconst(q2)){ |
| eval_const(&p->q2.val,t); |
| if(ISLWORD(t)){ |
| unsigned long ul; |
| reg=MTMP1; |
| if((c==ADD||c==SUB||c==ADDI2P||c==SUBIFP)&&zumeqto(vumax,ul2zum(1UL))){ |
| if(c==ADD) c=SUB; |
| else if(c==SUB) c=ADD; |
| else if(c==ADDI2P) c=SUBIFP; |
| else c=ADDI2P; |
| tmp1=ONES;tmp2=ONES; |
| }else{ |
| ul=zum2ul(zumand(vumax,ul2zum(65535UL))); |
| if(ul==0) tmp1=ZEROS; |
| else if(ul==0xffff) tmp1=ONES; |
| else{ |
| BSET(regs_modified,ti); |
| tmp1=ti; |
| emit(f,"\tmov\t%s,#%lu\n",regnames[ti],ul); |
| } |
| ul=zum2ul(zumand(zumrshift(vumax,ul2zum(16UL)),ul2zum(65535UL))); |
| if(ul==0) tmp2=ZEROS; |
| else if(ul==0xffff) tmp2=ONES; |
| else{ |
| BSET(regs_modified,ti2); |
| tmp2=ti2; |
| emit(f,"\tmov\t%s,#%lu\n",regnames[ti2],ul); |
| } |
| } |
| }else{ |
| long l; |
| if(c==OR&&(l=pof2(vumax))&&ISBADDR(p->z.v)){ |
| emit(f,"\tbset\t");emit_obj(f,&p->z,t); |
| emit(f,".%ld\n",l-1); |
| cc=0;continue; |
| }else if(c==AND&&(l=pof2(zumkompl(vumax)))&&ISBADDR(p->z.v)){ |
| emit(f,"\tbclr\t");emit_obj(f,&p->z,t); |
| emit(f,".%ld\n",l-1); |
| cc=0;continue; |
| }else if((c==ADD||c==SUB||c==ADDI2P||c==SUBIFP)&&zumeqto(vumax,ul2zum(1UL))){ |
| if(c==ADD) c=SUB; |
| else if(c==SUB) c=ADD; |
| else if(c==ADDI2P) c=SUBIFP; |
| else c=ADDI2P; |
| reg=ONES; |
| }else{ |
| if(zumeqto(vumax,ul2zum(0UL))) reg=ZEROS; |
| else if(zumeqto(vumax,ul2zum(0xffffUL))) reg=ONES; |
| else{ |
| BSET(regs_modified,tp); |
| reg=tp; |
| move(f,&p->q2,0,0,reg,t); |
| } |
| } |
| } |
| }else{ |
| /*FIXME:ones/zeros nutzen*/ |
| if(ISLWORD(t)){ |
| tmp1=ti;tmp2=ti2; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| reg=MTMP1; |
| }else{ |
| BSET(regs_modified,tp); |
| reg=tp; |
| } |
| if((p->q2.flags&(DREFOBJ|REG))==DREFOBJ){ |
| if(ISLWORD(p->q2.dtyp)){ |
| tmp3=ti2;tmp4=ti; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| p->q2.flags&=~DREFOBJ; |
| move(f,&p->q2,0,0,MTMP2,HPOINTER); |
| p->q2.flags=(REG|DREFOBJ);p->q2.reg=MTMP2; |
| }else if(!(p->q2.flags&KONST)){ |
| BSET(regs_modified,ti); |
| move(f,&p->q2,0,0,ti,NPOINTER); |
| p->q2.flags=REG;p->q2.reg=ti; |
| } |
| } |
| move(f,&p->q2,0,0,reg,t); |
| } |
| if(c>=OR&&c<=AND){ |
| s=logicals[c-OR]; |
| }else{ |
| if(c==ADDI2P) |
| s=arithmetics[ADD-LSHIFT]; |
| else if(c==SUBIFP) |
| s=arithmetics[SUB-LSHIFT]; |
| else |
| s=arithmetics[c-LSHIFT]; |
| } |
| if(reg&®_pair(reg,&rp)){ |
| if(ISFAR(p->z.v)){ |
| emit(f,"\texts\t#SEG ");isseg=1;emit_obj(f,&p->z,t);emit(f,",#2\n"); |
| } |
| emit(f,"\t%s\t",s); |
| emit_obj(f,&p->q1,t);emit(f,",%s\n",regnames[rp.r1]); |
| s=longcmd(s); |
| p->q1.val.vmax=zmadd(p->q1.val.vmax,l2zm(2L)); |
| emit(f,"\t%s\t",s); |
| emit_obj(f,&p->q1,t);emit(f,",%s\n",regnames[rp.r2]); |
| p->q1.val.vmax=zmsub(p->q1.val.vmax,l2zm(2L)); |
| }else{ |
| if(ISFAR(p->z.v)){ |
| emit(f,"\texts\t#SEG ");isseg=1;emit_obj(f,&p->z,t);emit(f,",#1\n"); |
| } |
| emit(f,"\t%s%s\t",s,(t&NQ)==CHAR?"b":""); |
| emit_obj(f,&p->q1,t); |
| if(reg) |
| emit(f,",%s\n",((t&NQ)==CHAR&®<=MAXR)?bregnames[reg]:regnames[reg]); |
| else{ |
| emit(f,","); |
| emit_obj(f,&p->q2,t); |
| emit(f,"\n"); |
| } |
| } |
| cc=&p->z;cc_t=t; |
| continue; |
| } |
| if(p->ext.flags==EXT_IC_BTST){ |
| if(isreg(q1)){bit_reg=regnames[p->q1.reg];continue;} |
| if((p->q1.flags&(VAR|VARADR|DREFOBJ|REG))==VAR&&ISSTATIC(p->q1.v)&&ISBADDR(p->q1.v)){ |
| bit_reg=0;bit_obj=&p->q1; |
| continue; |
| } |
| } |
| |
| if((c==MULT||((c==DIV||c==MOD)&&(p->typf&UNSIGNED)))&&isconst(q2)){ |
| long ln; |
| eval_const(&p->q2.val,t); |
| if(zmleq(l2zm(0L),vmax)&&zumleq(ul2zum(0UL),vumax)){ |
| if(ln=pof2(vumax)){ |
| if(c==MOD){ |
| vmax=zmsub(vmax,l2zm(1L)); |
| p->code=AND; |
| }else{ |
| vmax=l2zm(ln-1); |
| if(c==DIV) p->code=RSHIFT; else p->code=LSHIFT; |
| } |
| c=p->code; |
| gval.vmax=vmax; |
| eval_const(&gval,MAXINT); |
| if(c==AND){ |
| insert_const(&p->q2.val,t); |
| }else{ |
| insert_const(&p->q2.val,INT); |
| p->typf2=INT; |
| } |
| } |
| } |
| } |
| if(ISLWORD(t)&&(c==MULT||c==DIV||c==MOD)){ |
| if(lib_larith(f,p)) continue; |
| } |
| |
| if(!p->q1.am&&(p->q1.flags&DREFOBJ)){ |
| if(!(p->q1.flags&(REG))){ |
| if(ISLWORD(p->q1.dtyp)){ |
| tmp3=ti2;tmp4=ti;ti2_used=1; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| p->q1.flags&=~DREFOBJ; |
| move(f,&p->q1,0,0,MTMP2,FPOINTER); |
| p->q1.reg=MTMP2; |
| p->q1.flags=(REG|DREFOBJ); |
| }else if(!(p->q1.flags&KONST)){ |
| BSET(regs_modified,ti); |
| p->q1.flags&=~DREFOBJ; |
| move(f,&p->q1,0,0,ti,NPOINTER); |
| p->q1.reg=ti; |
| p->q1.flags=(REG|DREFOBJ); |
| } |
| } |
| if(p->q2.flags){ |
| move(f,&p->q1,0,0,reg,q2typ(p));/*FIXME*/ |
| if((!isreg(q1)||p->q1.reg!=reg)&&c==COMPARE&&!ISLWORD(t)&&isconst(q2)){ |
| /* avoid cmp, if not needed */ |
| eval_const(&p->q2.val,t); |
| if(ISNULL()){ |
| lastcomp=t;continue; |
| } |
| } |
| } |
| }else{ |
| if(p->q2.flags){ |
| move(f,&p->q1,0,0,reg,q1typ(p));/*FIXME*/ |
| if((!isreg(q1)||p->q1.reg!=reg)&&c==COMPARE&&!ISLWORD(t)&&isconst(q2)){ |
| /* avoid cmp, if not needed */ |
| eval_const(&p->q2.val,t); |
| if(ISNULL()){ |
| lastcomp=t;continue; |
| } |
| } |
| } |
| } |
| if(p->ext.flags==EXT_IC_BTST){ bit_reg=regnames[reg];continue;} |
| if(!p->q2.am&&(p->q2.flags&DREFOBJ)){ |
| if(!(p->q2.flags&(REG))||p->q2.reg>4){ |
| if(ISLWORD(p->q2.dtyp)){ |
| if(ti2_used) tmp4=get_reg(f,p); else tmp4=ti2; |
| tmp3=tp; |
| BSET(regs_modified,tmp3); |
| BSET(regs_modified,tmp4); |
| p->q2.flags&=~DREFOBJ; |
| move(f,&p->q2,0,0,MTMP2,FPOINTER); |
| p->q2.reg=MTMP2; |
| p->q2.flags=(REG|DREFOBJ); |
| }else if(!(p->q2.flags&KONST)){ |
| BSET(regs_modified,tp); |
| p->q2.flags&=~DREFOBJ; |
| move(f,&p->q2,0,0,tp,NPOINTER); |
| p->q2.flags=(REG|DREFOBJ); |
| p->q2.reg=tp; |
| } |
| } |
| } |
| if(c==CONVERT&&!must_convert(p->typf,p->typf2,0)){ |
| p->code=c=ASSIGN; |
| p->q2.val.vmax=sizetab[p->typf&NQ]; |
| } |
| |
| if(c==CONVERT){ |
| int to=p->typf2&NU; |
| if(to==INT) to=SHORT; |
| if(to==(UNSIGNED|INT)||to==NPOINTER) to=(UNSIGNED|SHORT); |
| if(to==FPOINTER||to==HPOINTER) to=(UNSIGNED|LONG); |
| if((t&NU)==INT) t=SHORT; |
| if((t&NU)==(UNSIGNED|INT)||(t&NU)==NPOINTER) t=(UNSIGNED|SHORT); |
| if((t&NQ)==FPOINTER||(t&NQ)==HPOINTER) t=(UNSIGNED|LONG); |
| if((to&NQ)<=LONG&&(t&NQ)<=LONG){ |
| if((to&NQ)<=(t&NQ)){ |
| if((to&NQ)==(t&NQ)) ierror(0); |
| if((to&NQ)==BIT){ |
| cc=0; |
| if((p->q1.flags&(VAR|REG|DREFOBJ|VARADR))!=VAR||!ISSTATIC(p->q1.v)) ierror(0); |
| if(reg_pair(reg,&rp)){ |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r1]); |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r2]); |
| emit(f,"\tbmov\t%s.0,",regnames[rp.r1]); |
| emit_obj(f,&p->q1,t);emit(f,"\n"); |
| }else{ |
| emit(f,"\tmov\t%s,#0\n",regnames[reg]); |
| emit(f,"\tbmov\t%s.0,",regnames[reg]); |
| } |
| emit_obj(f,&p->q1,t);emit(f,"\n"); |
| save_result(f,reg,p,t); |
| continue; |
| } |
| if((p->q1.flags&(VAR|REG|VARADR))==VAR&&ISSTATIC(p->q1.v)&&ISFAR(p->q1.v)){ |
| emit(f,"\texts\t#SEG ");isseg=1;emit_obj(f,&p->q1,t); |
| emit(f,",#1\n"); |
| } |
| qp.SEG=0; |
| if(!p->q1.am&&(p->q1.flags&DREFOBJ)&®_pair(p->q1.reg,&qp)) |
| emit(f,"\texts\t%s,#1\n",regnames[qp.SEG]); |
| if(p->q1.am&®_pair(p->q1.am->base,&qp)) |
| emit(f,"\texts\t%s,#1\n",regnames[qp.SEG]); |
| if(reg_pair(reg,&rp)){ |
| cc=0; |
| if((to&NQ)==CHAR){ |
| if(isreg(q1)||((p->q1.flags&(VAR|VARADR|DREFOBJ))==VAR&&ISSTATIC(p->q1.v))){ |
| emit(f,"\tmovb%c\t%s,",(to&UNSIGNED)?'z':'s',regnames[rp.r1]); |
| if((to&NQ)==CHAR&&isreg(q1)) emit(f,"%s",bregnames[p->q1.reg]); |
| else if(qp.SEG) emit(f,"[%s]",regnames[qp.SOF]); |
| else emit_obj(f,&p->q1,to); |
| emit(f,"\n"); |
| }else{ |
| BSET(regs_modified,tp); |
| emit(f,"\tmovb\t%s,",bregnames[tp]); |
| if(isreg(q1)) emit(f,"%s",bregnames[p->q1.reg]); |
| else if(!p->q1.am&&qp.SEG) emit(f,"[%s]",regnames[qp.SOF]); |
| else emit_obj(f,&p->q1,to); |
| emit(f,"\n"); |
| emit(f,"\tmovb%c\t%s,%s\n",(to&UNSIGNED)?'z':'s',regnames[rp.r1],bregnames[tp]); |
| } |
| }else{ |
| emit(f,"\tmov\t%s,",regnames[rp.r1]); |
| if(qp.SEG) emit(f,"[%s]",regnames[qp.SOF]); |
| else emit_obj(f,&p->q1,to); |
| emit(f,"\n"); |
| } |
| if(to&UNSIGNED) |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r2]); |
| else |
| emit(f,"\tmov\t%s,%s\n\tashr\t%s,#15\n",regnames[rp.r2],regnames[rp.r1],regnames[rp.r2]); |
| |
| }else{ |
| cc=&p->z;cc_t=t; |
| if(isreg(q1)||((p->q1.flags&(VAR|VARADR|DREFOBJ))==VAR&&ISSTATIC(p->q1.v))){ |
| emit(f,"\tmovb%c\t%s,",(to&UNSIGNED)?'z':'s',regnames[reg]); |
| if((to&NQ)==CHAR&&isreg(q1)) emit(f,"%s",bregnames[p->q1.reg]); |
| else if(qp.SEG) emit(f,"[%s]",regnames[qp.SOF]); |
| else emit_obj(f,&p->q1,to); |
| emit(f,"\n"); |
| }else{ |
| BSET(regs_modified,tp); |
| emit(f,"\tmovb\t%s,",bregnames[tp]); |
| if(isreg(q1)) emit(f,"%s",bregnames[p->q1.reg]); |
| else if(!p->q1.am&&qp.SEG) emit(f,"[%s]",regnames[qp.SOF]); |
| else emit_obj(f,&p->q1,to); |
| emit(f,"\n"); |
| emit(f,"\tmovb%c\t%s,%s\n",(to&UNSIGNED)?'z':'s',regnames[reg],bregnames[tp]); |
| } |
| } |
| save_result(f,reg,p,t); |
| continue; |
| }else{ |
| if((t&NQ)==BIT){ |
| if(!isreg(z)&&((p->z.flags&(VAR|REG|DREFOBJ|VARADR))!=VAR||!ISSTATIC(p->z.v))) ierror(0); |
| if(isreg(q1)){ |
| reg=p->q1.reg; |
| }else{ |
| if(ISLWORD(to)){ |
| tmp1=ti;tmp2=ti2; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| reg=MTMP1; |
| } |
| } |
| move(f,&p->q1,0,0,reg,to); |
| if(reg_pair(reg,&rp)){ |
| if(isreg(q1)&&!scratchreg(reg,p)){ |
| BSET(regs_modified,ti); |
| emit(f,"\tmov\t%s,%s\n",regnames[ti],regnames[rp.r1]); |
| emit(f,"\tor\t%s,%s\n",regnames[ti],regnames[rp.r2]); |
| }else |
| emit(f,"\tor\t%s,%s\n",regnames[rp.r1],regnames[rp.r2]); |
| }else{ |
| if(isreg(q1)) emit(f,"\tcmp%s\t%s,#0\n",(to&NQ)==CHAR?"b":"",(to&NQ)==CHAR?bregnames[reg]:regnames[reg]); |
| } |
| emit(f,"\tbmovn\t"); |
| if(isesfrbit(z)) |
| emit(f,"%s.0",regnames[ti]); |
| else |
| emit_obj(f,&p->z,t); |
| emit(f,",PSW.3\n"); |
| if(isesfrbit(z)){ |
| emit(f,"\textr\t#1\n"); |
| emit(f,"\tbmov\t"); |
| emit_obj(f,&p->z,t); |
| emit(f,",%s.0\n",regnames[ti]); |
| } |
| cc=0;continue; |
| } |
| cc=&p->z;cc_t=t; |
| if(ISLWORD(to)){ |
| if(isreg(q1)) {reg_pair(p->q1.reg,&rp);p->q1.reg=rp.r1;} |
| to=SHORT; |
| } |
| if(isreg(q1)&®ok(p->q1.reg,t,0)) reg=p->q1.reg; |
| if(isreg(z)) reg=p->z.reg; |
| if(!regok(reg,t,0)){ |
| reg=tp; |
| BSET(regs_modified,tp); |
| } |
| move(f,&p->q1,0,0,reg,to); |
| save_result(f,reg,p,t); |
| } |
| continue; |
| } |
| ierror(0); |
| } |
| if(c==MINUS||c==KOMPLEMENT){ |
| move(f,&p->q1,0,0,reg,t); |
| if(reg_pair(reg,&rp)){ |
| emit(f,"\t%s\t%s\n",(c==MINUS?"neg":"cpl"),regnames[rp.r1]); |
| if(c==MINUS) emit(f,"\taddc\t%s,#0\n",regnames[rp.r2]); |
| emit(f,"\t%s\t%s\n",(c==MINUS?"neg":"cpl"),regnames[rp.r2]); |
| cc=0; |
| }else{ |
| emit(f,"\t%s%s\t%s\n",(c==MINUS?"neg":"cpl"),x_t[t&NQ],regnames[reg]); |
| cc=&p->z;cc_t=t; |
| } |
| save_result(f,reg,p,t); |
| continue; |
| } |
| if(c==SETRETURN){ |
| if(p->z.reg){ |
| move(f,&p->q1,0,0,p->z.reg,t); |
| BSET(regs_modified,p->z.reg); |
| } |
| cc=0; /* probably not needed */ |
| continue; |
| } |
| if(c==GETRETURN){ |
| if(p->q1.reg){ |
| if(!isreg(z)||p->z.reg!=p->q1.reg){ cc=&p->z;cc_t=t;} |
| save_result(f,p->q1.reg,p,t); |
| } |
| continue; |
| } |
| if(c==CALL){ |
| int reg,jmp=0;long csstack=0,custack=0; |
| cc=0; |
| if((p->q1.flags&(VAR|DREFOBJ))==VAR&&!strcmp("__va_start",p->q1.v->identifier)){ |
| long va_off=loff-usrstackoffset+pushedsize+zm2l(va_offset(v)); |
| emit(f,"\tmov\t%s,%s\n",regnames[r4],regnames[sp]); |
| if(va_off) |
| emit(f,"\tadd\t%s,#%ld\n",regnames[r4],va_off); |
| BSET(regs_modified,r4); |
| if(LARGE||HUGE){ |
| emit(f,"\tmov\t%s,#0\n",regnames[r5]); |
| BSET(regs_modified,r5); |
| } |
| continue; |
| } |
| if(stack_valid){ |
| int i; |
| if(p->call_cnt<=0){ |
| err_ic=p;if(f) error(320); |
| stack_valid=0; |
| } |
| for(i=0;stack_valid&&i<p->call_cnt;i++){ |
| if(p->call_list[i].v->fi&&(p->call_list[i].v->fi->flags&ALL_STACK)){ |
| if(p->call_list[i].v->fi->stack1>custack) custack=p->call_list[i].v->fi->stack1; |
| if(p->call_list[i].v->fi->stack2>csstack) csstack=p->call_list[i].v->fi->stack2; |
| }else{ |
| err_ic=p;if(f) error(317,p->call_list[i].v->identifier); |
| stack_valid=0; |
| } |
| } |
| } |
| if(!calc_regs(p,f!=0)&&v->fi) v->fi->flags&=~ALL_REGS; |
| if((p->q1.flags&VAR)&&p->q1.v->fi&&p->q1.v->fi->inline_asm){ |
| emit_inline_asm(f,p->q1.v->fi->inline_asm); |
| callee_push(custack,csstack); |
| }else{ |
| if(usrstackoffset==0&&!have_frame&&!(v->tattr&INTERRUPT)){ |
| struct IC *p2; |
| jmp=1; |
| for(p2=p->next;p2;p2=p2->next){ |
| if(p2->code!=FREEREG&&p2->code!=ALLOCREG&&p2->code!=LABEL&& |
| (p2->code!=GETRETURN||(p2->z.flags&(REG|DREFOBJ))!=REG||p2->q1.reg!=p2->z.reg)&& |
| (p2->code!=SETRETURN||(p2->q1.flags&(REG|DREFOBJ))!=REG||p2->q1.reg!=p2->z.reg)){ |
| jmp=0;break; |
| } |
| } |
| } |
| if(p->q1.flags&DREFOBJ){ |
| int clabel=++label; |
| if(ISLWORD(p->q1.dtyp)){ |
| int tmp; |
| if(!ti2_used) tmp=ti2; else tmp=tp; |
| BSET(regs_modified,tmp); |
| emit(f,"\tmov\t%s,#SEG %s%d\n",regnames[tmp],labprefix,clabel); |
| emit(f,"\tpush\t%s\n",regnames[tmp]); |
| emit(f,"\tmov\t%s,#SOF %s%d\n",regnames[tmp],labprefix,clabel); |
| emit(f,"\tpush\t%s\n",regnames[tmp]); |
| push(0,4); |
| } |
| if(!(p->q1.flags®)) ierror(0); |
| reg=p->q1.reg; |
| p->q1.flags&=~DREFOBJ; |
| if(!ISLWORD(p->q1.dtyp)){ |
| emit(f,"\tcalli\tcc_uc,[%s]\n",regnames[reg]); |
| push(0,2); |
| callee_push(custack,csstack); |
| pop(0,2); |
| }else{ |
| if(!reg_pair(reg,&rp)) ierror(0); |
| emit(f,"\tpush\t%s\n",regnames[rp.r2]); |
| emit(f,"\tpush\t%s\n",regnames[rp.r1]); |
| push(0,4); |
| callee_push(custack,csstack); |
| emit(f,"\trets\n"); |
| emit(f,"%s%d:\n",labprefix,clabel); |
| pop(0,8); |
| } |
| }else{ |
| if(jmp){ |
| emit(f,"\t%s",jump); |
| if(!need_return) ret=TASKING?"retv":""; |
| callee_push(custack,csstack); |
| }else{ |
| emit(f,"\t%s\t",call); |
| if(TINY) |
| push(0,2); |
| else |
| push(0,4); |
| callee_push(custack,csstack); |
| if(TINY) |
| pop(0,2); |
| else |
| pop(0,4); |
| } |
| emit_obj(f,&p->q1,t); |
| emit(f,"\n"); |
| } |
| } |
| if(!zmeqto(l2zm(0L),p->q2.val.vmax)){ |
| notpopped+=zm2l(p->q2.val.vmax); |
| dontpop-=zm2l(p->q2.val.vmax); |
| if(!(g_flags[2]&USEDFLAG)&&usrstackoffset==-notpopped){ |
| /* Entfernen der Parameter verzoegern */ |
| }else{ |
| emit(f,"\tadd\t%s,#%ld\n",regnames[sp],zm2l(p->q2.val.vmax)); |
| pop(zm2l(p->q2.val.vmax),0); |
| notpopped-=zm2l(p->q2.val.vmax);cc=0; |
| } |
| } |
| continue; |
| } |
| if(c==ASSIGN||c==PUSH){ |
| if(c==PUSH) dontpop+=zm2l(p->q2.val.vmax); |
| if(!ISSCALAR(t)||!zmeqto(p->q2.val.vmax,sizetab[t&NQ])||!zmleq(p->q2.val.vmax,l2zm(4L))){ |
| int alq,alz,rq,rz;unsigned long size; |
| cc=0; |
| size=zm2l(p->q2.val.vmax); |
| /*FIXME: check for (s)huge */ |
| if(malign[t&NQ]==1){ |
| alq=alignment(&p->q1); |
| alz=alignment(&p->z); |
| }else{ |
| alq=alz=0; |
| } |
| if(size==1||(size==2&&alq==0&&alz==0)){ |
| if(c==PUSH&&zm2l(p->z.val.vmax)==1){ |
| emit(f,"\tsub\t%s,#1\n",regnames[sp]); |
| push(1,0);size=1; |
| } |
| BSET(regs_modified,tp); |
| move(f,&p->q1,0,0,tp,size==1?CHAR:SHORT); |
| if(c==PUSH){ |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[tp]); |
| push(size,0); |
| }else |
| save_result(f,tp,p,size==1?CHAR:SHORT); |
| continue; |
| } |
| if(size==4&&alq==0&&alz==0){ |
| tmp1=ti;tmp2=ti2; |
| BSET(regs_modified,ti); |
| BSET(regs_modified,ti2); |
| move(f,&p->q1,0,0,MTMP1,LONG); |
| if(c==PUSH){ |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[tmp2]); |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[tmp1]); |
| push(4,0); |
| }else |
| save_result(f,MTMP1,p,LONG); |
| continue; |
| } |
| if(p->q1.am){ |
| if(p->q1.am->flags!=IMM_IND) ierror(0); |
| if(!scratchreg(p->q1.am->base,p)){ |
| BSET(regs_modified,ti); |
| emit(f,"\tmov\t%s,%s\n",regnames[ti],regnames[p->q1.am->base]); |
| rq=ti; |
| }else |
| rq=p->q1.am->base; |
| emit(f,"\tadd\t%s,#%ld",regnames[rq],p->q1.am->offset); |
| if(p->q1.am->v){ |
| if(p->q1.am->v->storage_class==EXTERN) |
| emit(f,"+%s%s\n",idprefix,p->q1.am->v->identifier); |
| |
| else |
| emit(f,"+%s%ld\n",labprefix,zm2l(p->q1.am->v->offset)); |
| } |
| emit(f,"\n"); |
| }else if(p->q1.flags®){ |
| if(scratchreg(p->q1.reg,p)){ |
| rq=p->q1.reg; |
| }else{ |
| BSET(regs_modified,ti); |
| emit(f,"\tmov\t%s,%s\n",regnames[ti],regnames[p->q1.reg]); |
| rq=ti; |
| } |
| }else if((p->q1.flags&VAR)&&ISSTATIC(p->q1.v)){ |
| int m=p->q1.flags; |
| rq=ti; |
| BSET(regs_modified,ti); |
| if(p->q1.flags&DREFOBJ) |
| p->q1.flags&=~DREFOBJ; |
| else |
| p->q1.flags|=VARADR; |
| move(f,&p->q1,0,0,ti,NPOINTER); |
| p->q1.flags&=~VARADR; |
| }else{ |
| BSET(regs_modified,ti); |
| rq=ti; |
| emit(f,"\tmov\t%s,%s\n",regnames[ti],regnames[sp]); |
| if(voff(&p->q1)) |
| emit(f,"\tadd\t%s,#%ld\n",regnames[ti],voff(&p->q1)); |
| } |
| if(!p->z.flags){ |
| /* PUSH */ |
| emit(f,"\tsub\t%s,#%lu\n",regnames[sp],size); |
| emit(f,"\tmov\t%s,%s\n",regnames[ti2],regnames[sp]); |
| rz=ti2; |
| push(size,0); |
| BSET(regs_modified,ti2); |
| }else if(p->z.am){ |
| if(p->z.am->flags!=IMM_IND) ierror(0); |
| if(!scratchreg(p->z.am->base,p)){ |
| BSET(regs_modified,ti2); |
| emit(f,"\tmov\t%s,%s\n",regnames[ti2],regnames[p->z.am->base]); |
| rz=ti2; |
| }else |
| rz=p->z.am->base; |
| emit(f,"\tadd\t%s,#%ld",regnames[rz],p->z.am->offset); |
| if(p->z.am->v){ |
| if(p->z.am->v->storage_class==EXTERN) |
| emit(f,"+%s%s",idprefix,p->z.am->v->identifier); |
| else |
| emit(f,"%+s%ld",labprefix,zm2l(p->z.am->v->offset)); |
| |
| } |
| emit(f,"\n"); |
| }else if(p->z.flags®){ |
| if(scratchreg(p->z.reg,p)){ |
| rz=p->z.reg; |
| }else{ |
| BSET(regs_modified,ti2); |
| emit(f,"\tmov\t%s,%s\n",regnames[ti2],regnames[p->z.reg]); |
| rz=ti2; |
| } |
| }else if(ISSTATIC(p->z.v)){ |
| int m=p->z.flags; |
| rz=ti2; |
| BSET(regs_modified,ti2); |
| if(p->z.flags&DREFOBJ) |
| p->z.flags&=~DREFOBJ; |
| else |
| p->z.flags|=VARADR; |
| move(f,&p->z,0,0,ti2,NPOINTER); |
| p->z.flags=m; |
| }else{ |
| BSET(regs_modified,ti2); |
| rz=ti2; |
| emit(f,"\tmov\t%s,%s\n",regnames[ti2],regnames[sp]); |
| if(voff(&p->z)) |
| emit(f,"\tadd\t%s,#%ld\n",regnames[ti2],voff(&p->z)); |
| } |
| if(alq==0&&alz==0){ |
| if(optspeed){ |
| if((size/8)>1){ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,#%lu\n",regnames[tp],size/8); |
| emit(f,"%s%d:\n",labprefix,++label); |
| } |
| if(size>=8){ |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| } |
| if((size/8)>1){ |
| emit(f,"\tsub\t%s,#1\n",regnames[tp]); |
| emit(f,"\tjmpr\tcc_nz,%s%d\n",labprefix,label); |
| } |
| size&=7; |
| if(size>=4){ |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| if(size>4) emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| } |
| size&=3; |
| if(size>=2){ |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| if(size>2) emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| } |
| if(size&1) |
| if(size&1) emit(f,"\tmovb\t[%s],[%s]\n",regnames[rz],regnames[rq]); |
| }else{ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,#%lu\n",regnames[tp],size/2); |
| emit(f,"%s%d:\n",labprefix,++label); |
| emit(f,"\tmov\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#2\n",regnames[rz]); |
| emit(f,"\tsub\t%s,#1\n",regnames[tp]); |
| emit(f,"\tjmpr\tcc_nz,%s%d\n",labprefix,label); |
| if(size&1) emit(f,"\tmovb\t[%s],[%s]\n",regnames[rz],regnames[rq]); |
| } |
| }else{ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,#%lu\n",regnames[tp],size); |
| emit(f,"%s%d:\n",labprefix,++label); |
| emit(f,"\tmovb\t[%s],[%s+]\n",regnames[rz],regnames[rq]); |
| emit(f,"\tadd\t%s,#1\n",regnames[rz]); |
| emit(f,"\tsub\t%s,#1\n",regnames[tp]); |
| emit(f,"\tjmpr\tcc_nz,%s%d\n",labprefix,label); |
| } |
| continue; |
| } |
| /* mov [rx],[ry] ; mov [rx+],[ry] ; mov [rx],[ry+] */ |
| if(!ISLWORD(t)&&(p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&(p->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ)&&(!p->z.am||p->z.am->flags==POST_INC)&&(!p->q1.am||p->q1.am->flags==POST_INC)&&!reg_pair(p->q1.reg,&rp)&&!reg_pair(p->z.reg,&rp)){ |
| emit(f,"\tmov%s\t",(t&NQ)==CHAR?"b":""); |
| emit_obj(f,&p->z,t);emit(f,","); |
| emit_obj(f,&p->q1,t);emit(f,"\n"); |
| cc=&p->z;cc_t=t;continue; |
| } |
| /* mov mem,[rx]/reg */ |
| if(!ISLWORD(t)&&(issfr(q1)||(p->q1.flags&(REG|DREFOBJ))==(REG|DREFOBJ))&&(p->z.flags&(REG|DREFOBJ|VAR))==VAR&&!p->q1.am&&(p->z.v->storage_class==STATIC||p->z.v->storage_class==EXTERN)){ |
| emit(f,"\tmov%s\t",(t&NQ)==CHAR?"b":""); |
| emit_obj(f,&p->z,t);emit(f,","); |
| emit_obj(f,&p->q1,t);emit(f,"\n"); |
| cc=&p->z;cc_t=t;continue; |
| } |
| /* mov [rx]/reg,mem */ |
| if(!ISLWORD(t)&&(issfr(z)||(p->z.flags&(REG|DREFOBJ))==(REG|DREFOBJ))&&(p->q1.flags&(REG|DREFOBJ|VAR))==VAR&&!p->z.am&&(p->q1.v->storage_class==STATIC||p->q1.v->storage_class==EXTERN)){ |
| emit(f,"\tmov%s\t",(t&NQ)==CHAR?"b":""); |
| emit_obj(f,&p->z,t);emit(f,","); |
| emit_obj(f,&p->q1,t);emit(f,"\n"); |
| cc=&p->z;cc_t=t;continue; |
| } |
| /* mov reg,op */ |
| if(issfr(z)&&(p->q1.flags&KONST)){ |
| emit(f,"\tmov%s\t",(t&NQ)==CHAR?"b":""); |
| emit_obj(f,&p->z,t);emit(f,","); |
| emit_obj(f,&p->q1,t);emit(f,"\n"); |
| cc=&p->z;cc_t=t;continue; |
| } |
| |
| if(isreg(q1)){ |
| reg=p->q1.reg; |
| }else if(isreg(z)){ |
| reg=p->z.reg; |
| }else{ |
| BSET(regs_modified,ti); |
| if(ISLWORD(t)){ |
| BSET(regs_modified,ti2); |
| tmp1=ti;tmp2=ti2; |
| reg=MTMP1; |
| }else |
| reg=ti; |
| } |
| if(c==PUSH){ |
| move(f,&p->q1,0,0,reg,t); |
| if(reg_pair(reg,&rp)){ |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[rp.r2]); |
| emit(f,"\tmov\t[-%s],%s\n",regnames[sp],regnames[rp.r1]); |
| cc=0; |
| }else{ |
| emit(f,"\tmov%s\t[-%s],%s\n",x_t[t&NQ],regnames[sp],regnames[reg]); |
| cc=&p->q1;cc_t=t; |
| } |
| push(zm2l(p->z.val.vmax),0); |
| continue; |
| } |
| if(c==ASSIGN){ |
| if((p->z.flags&(VAR|REG|DREFOBJ))==VAR&&ISSTATIC(p->z.v)&&isconst(q1)){ |
| /*FIXME: long und ones */ |
| eval_const(&p->q1.val,t); |
| if(ISNULL()&&!ISLWORD(t)){ |
| emit(f,"\tmov%s\t",(t&NQ)==CHAR?"b":"");emit_obj(f,&p->z,t); |
| emit(f,",ZEROS\n"); |
| cc=&p->z;cc_t=t;continue; |
| } |
| } |
| if((t&NQ)==CHAR&&!regok(reg,CHAR,0)){ |
| reg=tp; |
| BSET(regs_modified,tp); |
| } |
| move(f,&p->q1,0,0,reg,t); |
| save_result(f,reg,p,t); |
| if(ISLWORD(t)){ |
| cc=0; |
| }else{ |
| cc=&p->z;cc_t=t; |
| } |
| continue; |
| } |
| ierror(0); |
| } |
| if(c==ADDRESS){ |
| if(reg_pair(reg,&rp)){ |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r1],regnames[sp]); |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r2]); |
| if(voff(&p->q1)) |
| emit(f,"\tadd\t%s,#%ld\n",regnames[rp.r1],voff(&p->q1)&0xffff); |
| }else{ |
| emit(f,"\tmov\t%s,%s\n",regnames[reg],regnames[sp]); |
| if(voff(&p->q1)) emit(f,"\tadd\t%s,#%ld\n",regnames[reg],voff(&p->q1)); |
| } |
| save_result(f,reg,p,p->typf2); |
| cc=0; |
| continue; |
| } |
| |
| if(c==MOD||c==DIV){ |
| if(ISLWORD(t)) ierror(0); |
| /*FIXME:suboptimal*/ |
| emit(f,"\tmov\tMDL,%s\n",regnames[reg]); |
| move(f,&p->q2,0,0,reg,t); |
| emit(f,"\tdiv%s\t%s\n",(t&UNSIGNED)?"u":"",regnames[reg]); |
| if(c==MOD) |
| emit(f,"\tmov\t%s,MDH\n",regnames[reg]); |
| else |
| emit(f,"\tmov\t%s,MDL\n",regnames[reg]); |
| save_result(f,reg,p,t); |
| cc=&p->z;cc_t=t; |
| continue; |
| } |
| if((c>=LSHIFT&&c<=MOD)||(c>=OR&&c<=AND)||c==COMPARE||c==ADDI2P||c==SUBIFP){ |
| char *s; |
| /*FIXME: nicht immer besser*/ |
| /* rfi: better performed in LSHIFT code generation |
| if(ISLWORD(t)&&c==LSHIFT&&isconst(q2)){ |
| eval_const(&p->q2.val,t); |
| if(zm2l(vmax)==1&&!p->q1.am){ |
| p->code=c=ADD; |
| p->q2=p->q1; |
| } |
| } |
| */ |
| if(ISLWORD(t)&&c==MULT) ierror(0); |
| if(ISLWORD(t)&&(c==LSHIFT||c==RSHIFT)){ |
| /* rfi: we now handle constant value greater than 16 in const shift generation |
| if(isconst(q2)) |
| eval_const(&p->q2.val,q2typ(p)); |
| if(!isconst(q2)||zmleq(l2zm(16L),vmax)){ |
| */ |
| if(!isconst(q2)){ |
| int cnt,lab1,lab2; |
| if(isreg(q2)&&scratchreg(p->q2.reg,p)){ |
| cnt=p->q2.reg; |
| }else{ |
| BSET(regs_modified,tp); |
| cnt=tp; |
| if(isreg(q2)&®_pair(p->q2.reg,&rp)) |
| move(f,0,rp.r1,0,tp,INT); |
| else |
| move(f,&p->q2,0,0,tp,INT); |
| } |
| if(reg_pair(cnt,&rp)) |
| cnt=rp.r1; |
| /*move(f,&p->q1,0,0,reg,ztyp(p));*/ |
| lab1=++label;lab2=++label; |
| if(!reg_pair(reg,&rp)) ierror(0); |
| if(c==LSHIFT){ |
| emit(f,"\tjmpr\tcc_uc,%s%d\n",labprefix,lab2); |
| emit(f,"%s%d:\n",labprefix,lab1); |
| emit(f,"\tadd\t%s,%s\n",regnames[rp.r1],regnames[rp.r1]); |
| emit(f,"\taddc\t%s,%s\n",regnames[rp.r2],regnames[rp.r2]); |
| emit(f,"%s%d:\n",labprefix,lab2); |
| /* rfi: fix off by one and handle negative shift value |
| emit(f,"\tsub\t%s,#1\n",regnames[cnt]); |
| emit(f,"\tjmpr\tcc_ne,%s%d\n",labprefix,lab1); |
| */ |
| emit(f,"\tcmpd1\t%s,#1\n",regnames[cnt]); |
| emit(f,"\tjmpr\tcc_sge,%s%d\n",labprefix,lab1); |
| }else{ |
| emit(f,"\tjmpr\tcc_uc,%s%d\n",labprefix,lab2); |
| emit(f,"%s%d:\n",labprefix,lab1); |
| emit(f,"\tshr\t%s,#1\n",regnames[rp.r1]); |
| emit(f,"\tbmov\t%s.15,%s.0\n",regnames[rp.r1],regnames[rp.r2]); |
| /* rfi: use ashr for signed shift |
| emit(f,"\tshr\t%s,#1\n",regnames[rp.r2]); |
| */ |
| emit(f,"\t%sshr\t%s,#1\n",(t&UNSIGNED)?"":"a",regnames[rp.r2]); |
| emit(f,"%s%d:\n",labprefix,lab2); |
| /* rfi: fix off by one and handle negative shift value |
| emit(f,"\tsub\t%s,#1\n",regnames[cnt]); |
| emit(f,"\tjmpr\tcc_ne,%s%d\n",labprefix,lab1); |
| */ |
| emit(f,"\tcmpd1\t%s,#1\n",regnames[cnt]); |
| emit(f,"\tjmpr\tcc_sge,%s%d\n",labprefix,lab1); |
| } |
| save_result(f,reg,p,ztyp(p)); |
| continue; |
| } |
| } |
| if(c>=OR&&c<=AND){ |
| s=logicals[c-OR]; |
| }else{ |
| if(c==ADDI2P) |
| s=arithmetics[ADD-LSHIFT]; |
| else if(c==SUBIFP) |
| s=arithmetics[SUB-LSHIFT]; |
| else |
| s=arithmetics[c-LSHIFT]; |
| } |
| if(c==RSHIFT&&!(t&UNSIGNED)) s="ashr"; |
| if(c==COMPARE){ |
| lastcomp=t; |
| if(ISLWORD(t)) s="sub"; else s="cmp"; |
| } |
| if((c==MULT&&!isreg(q2))){ |
| BSET(regs_modified,tp); |
| move(f,&p->q2,0,0,tp,t); |
| p->q2.flags=REG; |
| p->q2.reg=tp; |
| } |
| if((c==LSHIFT||c==RSHIFT)&&!isconst(q2)&&!isreg(q2)){ |
| BSET(regs_modified,tp); |
| move(f,&p->q2,0,0,tp,t); |
| p->q2.flags=REG; |
| p->q2.reg=tp; |
| } |
| if(isreg(q2)){ |
| if(reg_pair(reg,&rp)){ |
| if(!reg_pair(p->q2.reg,&qp)) qp.r1=p->q2.reg; |
| emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r1],regnames[qp.r1]); |
| s=longcmd(s); |
| if(!short_add) emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r2],regnames[qp.r2]); |
| }else{ |
| emit(f,"\t%s%s\t%s,%s\n",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg],(t&NQ)==CHAR?bregnames[p->q2.reg]:regnames[p->q2.reg]); |
| } |
| }else if(p->q2.am){ |
| if(reg_pair(p->q2.am->base,&rp)){ |
| int seg=rp.SEG; |
| if(!short_add&®_pair(reg,&rp)) |
| emit(f,"\texts\t%s,#3\n",regnames[seg]); |
| else |
| emit(f,"\texts\t%s,#1\n",regnames[seg]); |
| } |
| if(reg_pair(reg,&rp)){ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,",regnames[tp]);emit_obj(f,&p->q2,t);emit(f,"\n"); |
| emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r1],regnames[tp]); |
| s=longcmd(s); |
| if(!short_add){ |
| p->q2.am->offset+=2; |
| emit(f,"\tmov\t%s,",regnames[tp]);emit_obj(f,&p->q2,t);emit(f,"\n"); |
| emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r2],regnames[tp]); |
| p->q2.am->offset-=2; |
| } |
| }else{ |
| if(p->q2.am->flags==POST_INC&&p->q2.am->base<=4){ |
| emit(f,"\t%s%s\t%s,",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| }else{ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov%s\t%s,",x_t[t&NQ],(t&NQ)==CHAR?bregnames[tp]:regnames[tp]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| emit(f,"\t%s%s\t%s,%s\n",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg],(t&NQ)==CHAR?bregnames[tp]:regnames[tp]); |
| } |
| } |
| }else if((p->q2.flags&(VAR|VARADR|REG))==VAR&&ISSTATIC(p->q2.v)){ |
| if(ISFAR(p->q2.v)){ |
| emit(f,"\texts\t#SEG ");isseg=1;emit_obj(f,&p->q2,t); |
| emit(f,",#%d\n",(reg_pair(reg,&rp)?2:1)); |
| } |
| if(reg_pair(reg,&rp)){ |
| emit(f,"\t%s\t%s,",s,regnames[rp.r1]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| s=longcmd(s); |
| if(!short_add){ |
| emit(f,"\t%s\t%s,",s,regnames[rp.r2]); |
| emit_obj(f,&p->q2,t);emit(f,"+2\n"); |
| } |
| }else{ |
| emit(f,"\t%s%s\t%s,",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| } |
| }else if(isconst(q2)){ |
| if(ISFLOAT(t)) ierror(0); |
| if(reg_pair(reg,&rp)){ |
| long l; |
| /* rfi: shift constant must be evaluated according to own type |
| eval_const(&p->q2.val,t); |
| */ |
| eval_const(&p->q2.val,q2typ(p)); |
| if(c==RSHIFT){ |
| l=zm2l(vmax); |
| /* rfi: new generation for constant right shift */ |
| if( l < 0) { |
| /* TODO: we should raise a warning */ |
| /* Implementation dependent: negative shift is same as null shift */ |
| /* avoid shift generation */ |
| } else if( l > 31) { |
| /* TODO: we should raise a warning */ |
| /* Implementation dependent: same behaviour as non const shift */ |
| if( t & UNSIGNED) |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r2]); |
| else |
| emit(f,"\t%s\t%s,#15\n",s,regnames[rp.r2]); |
| |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r1],regnames[rp.r2]); |
| } else if( l > 15) { |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r1],regnames[rp.r2]); |
| if( t & UNSIGNED) |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r2]); |
| else |
| emit(f,"\t%s\t%s,#15\n",s,regnames[rp.r2]); |
| |
| l -= 16 ; |
| if( l > 0) |
| emit(f,"\t%s\t%s,#%ld\n",s,regnames[rp.r1],l); |
| } else if( l == 0) { |
| /* avoid shift generation */ |
| } else if( l == 1) { |
| emit(f,"\tshr\t%s,#1\n",regnames[rp.r1]); |
| emit(f,"\tbmov\t%s.15,%s.0\n",regnames[rp.r1],regnames[rp.r2]); |
| emit(f,"\t%s\t%s,#1\n",s,regnames[rp.r2]); |
| } else { |
| /* rfi: warning should be raised in corresponding case (see TODO above) |
| if(l<1||l>15) ierror(0); |
| */ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,%s\n",regnames[tp],regnames[rp.r2]); |
| emit(f,"\tshr\t%s,#%ld\n",regnames[rp.r1],l); |
| emit(f,"\t%s\t%s,#%ld\n",s,regnames[rp.r2],l); |
| emit(f,"\tshl\t%s,#%ld\n",regnames[tp],16-l); |
| emit(f,"\tor\t%s,%s\n",regnames[rp.r1],regnames[tp]); |
| } |
| }else if(c==LSHIFT){ |
| l=zm2l(vmax); |
| /* rfi: new generation for constant left shift */ |
| if( l < 0) { |
| /* TODO: we should raise a warning */ |
| /* Implementation dependent: negative shift is same as null shift */ |
| /* avoid shift generation */ |
| } else if( l > 31) { |
| /* TODO: we should raise a warning */ |
| /* Implementation dependent: same behaviour as non const shift */ |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r1]); |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r2],regnames[rp.r1]); |
| } else if( l > 15) { |
| emit(f,"\tmov\t%s,%s\n",regnames[rp.r2],regnames[rp.r1]); |
| emit(f,"\tmov\t%s,#0\n",regnames[rp.r1]); |
| l -= 16 ; |
| if( l > 0) |
| emit(f,"\tshl\t%s,#%ld\n",regnames[rp.r2],l); |
| } else if( l == 0) { |
| /* avoid shift generation */ |
| } else if( l == 1) { |
| emit(f,"\tadd\t%s,%s\n",regnames[rp.r1],regnames[rp.r1]); |
| emit(f,"\taddc\t%s,%s\n",regnames[rp.r2],regnames[rp.r2]); |
| } else |
| /* rfi: warning should be raised in corresponding case (see TODO above) |
| if(l<1||l>15) ierror(0); |
| */ |
| if(l==2){ |
| emit(f,"\tadd\t%s,%s\n",regnames[rp.r1],regnames[rp.r1]); |
| emit(f,"\taddc\t%s,%s\n",regnames[rp.r2],regnames[rp.r2]); |
| emit(f,"\tadd\t%s,%s\n",regnames[rp.r1],regnames[rp.r1]); |
| emit(f,"\taddc\t%s,%s\n",regnames[rp.r2],regnames[rp.r2]); |
| }else{ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,%s\n",regnames[tp],regnames[rp.r1]); |
| emit(f,"\tshl\t%s,#%ld\n",regnames[rp.r1],l); |
| emit(f,"\tshl\t%s,#%ld\n",regnames[rp.r2],l); |
| emit(f,"\tshr\t%s,#%ld\n",regnames[tp],16-l); |
| emit(f,"\tor\t%s,%s\n",regnames[rp.r2],regnames[tp]); |
| } |
| }else{ |
| l=zm2l(zmand(vmax,l2zm(65535L))); |
| emit(f,"\t%s\t%s,#%ld\n",s,regnames[rp.r1],l); |
| l=zm2l(zmrshift(vmax,l2zm(16L))); |
| s=longcmd(s); |
| if(!short_add) emit(f,"\t%s\t%s,#%ld\n",s,regnames[rp.r2],l); |
| } |
| }else{ |
| emit(f,"\t%s%s\t%s,",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| } |
| }else if(p->q2.flags&VARADR){ |
| p->q2.flags&=~VARADR; |
| if(reg_pair(reg,&rp)){ |
| emit(f,"\t%s\t%s,#SOF ",s,regnames[rp.r1]);emit_obj(f,&p->q2,t);emit(f,"\n"); |
| s=longcmd(s); |
| if(!short_add) |
| emit(f,"\t%s\t%s,#SEG ",s,regnames[rp.r2]);isseg=1;emit_obj(f,&p->q2,t);emit(f,"\n"); |
| }else{ |
| emit(f,"\t%s\t%s,#",s,regnames[reg]);emit_obj(f,&p->q2,t);emit(f,"\n"); |
| } |
| p->q2.flags|=VARADR; |
| }else if(p->q2.flags&DREFOBJ){ |
| int seg=0,sof=0; |
| /* if(!(p->q2.flags®)) ierror(0);*/ |
| if(reg_pair(p->q2.reg,&rp)){ |
| seg=rp.SEG;sof=rp.SOF; |
| if(!short_add&®_pair(reg,&rp)){ |
| emit(f,"\texts\t%s,#2\n",regnames[seg]); |
| }else |
| emit(f,"\texts\t%s,#1\n",regnames[seg]); |
| } |
| if(reg_pair(reg,&rp)){ |
| if(scratchreg(p->q2.reg,p)){ |
| emit(f,"\t%s\t%s,[%s+]\n",s,regnames[rp.r1],regnames[sof?sof:p->q2.reg]); |
| s=longcmd(s); |
| if(!short_add) emit(f,"\t%s\t%s,[%s]\n",s,regnames[rp.r2],regnames[sof?sof:p->q2.reg]); |
| }else{ |
| emit(f,"\t%s\t%s,[%s]\n",s,regnames[rp.r1],regnames[sof?sof:p->q2.reg]); |
| s=longcmd(s); |
| if(!short_add){ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,[%s+#2]\n",regnames[tp],regnames[sof?sof:p->q2.reg]); |
| emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r2],regnames[tp]); |
| } |
| } |
| }else{ |
| emit(f,"\t%s%s\t%s,",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg]); |
| emit_obj(f,&p->q2,t);emit(f,"\n"); |
| } |
| }else if((p->q2.flags&(VAR|DREFOBJ))==VAR&&(p->q2.v->storage_class==AUTO||p->q2.v->storage_class==REGISTER)){ |
| long l=voff(&p->q2); |
| if(reg_pair(reg,&rp)){ |
| if(l){ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,[%s+#%ld]\n",regnames[tp],regnames[sp],l); |
| emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r1],regnames[tp]); |
| }else |
| emit(f,"\t%s\t%s,[%s]\n",s,regnames[rp.r1],regnames[sp]); |
| s=longcmd(s); |
| if(!short_add){ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov\t%s,[%s+#%ld]\n",regnames[tp],regnames[sp],l+2); |
| emit(f,"\t%s\t%s,%s\n",s,regnames[rp.r2],regnames[tp]); |
| } |
| }else{ |
| if(l){ |
| BSET(regs_modified,tp); |
| emit(f,"\tmov%s\t%s,[%s+#%ld]\n",x_t[t&NQ],(t&NQ)==CHAR?bregnames[tp]:regnames[tp],regnames[sp],l); |
| emit(f,"\t%s%s\t%s,%s\n",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg],(t&NQ)==CHAR?bregnames[tp]:regnames[tp]); |
| }else |
| emit(f,"\t%s%s\t%s,[%s]\n",s,x_t[t&NQ],(t&NQ)==CHAR?bregnames[reg]:regnames[reg],regnames[sp]); |
| } |
| }else |
| ierror(0); |
| if(c==MULT) emit(f,"\tmov\t%s,MDL\n",regnames[reg]); |
| /*FIXME:signed*/ |
| if(short_add==1) emit(f,"\t%s\t%s,#0\n",s,regnames[rp.r2]); |
| if(c!=COMPARE) save_result(f,reg,p,t); |
| if(!ISLWORD(t)||((c==ADD||c==SUB||c==ADDI2P||c==SUBIFP)&&!short_add)){ |
| cc=&p->z;cc_t=t; |
| }else |
| cc=0; |
| continue; |
| } |
| ierror(0); |
| } |
| if(notpopped){ |
| emit(f,"\tadd\t%s,#%ld\n",regnames[sp],notpopped); |
| pop(notpopped,0);notpopped=0; |
| } |
| function_bottom(f,v,loff); |
| } |
| |
| int shortcut(int c,int t) |
| { |
| if(c==COMPARE||c==AND||c==OR||c==XOR) return 1; |
| if((t&NQ)!=BIT&&(c==ADD||c==SUB)) return 1; |
| return 0; |
| } |
| |
| void cleanup_cg(FILE *f) |
| { |
| struct fpconstlist *p; |
| unsigned char *ip; |
| if(f&&stack_check){ |
| emit(f,"\t%s\t%s__stack_check\n",public,idprefix); |
| } |
| while(p=firstfpc){ |
| if(f){ |
| new_section(f,NDATA); |
| emit(f,even); |
| emit(f,"%s%d:\n\t%s\t",labprefix,p->label,TASKING?dct[SHORT]:vdct[SHORT]); |
| ip=(unsigned char *)&p->val.vdouble; |
| emit(f,"0x%02x%02x%02x%02x",ip[3],ip[2],ip[1],ip[0]); |
| if((p->typ&NQ)==DOUBLE||(p->typ&NQ)==LDOUBLE){ |
| emit(f,",0x%02x%02x%02x%02x",ip[7],ip[6],ip[5],ip[4]); |
| } |
| emit(f,"\n"); |
| } |
| firstfpc=p->next; |
| free(p); |
| } |
| if(f&&TASKING) emit(f,"%s\tREGDEF R0-R15\n\tend\n",sec_end); |
| } |
| |
| int reg_parm(struct reg_handle *p,struct Typ *t,int mode,struct Typ *fkt) |
| { |
| int f=t->flags&NQ; |
| if(!ISSCALAR(f)) return 0; |
| if(p->gpr>3||mode) return 0; |
| if(f==LLONG||f==DOUBLE||f==LDOUBLE) |
| return 0; |
| else if(f==LONG||f==FPOINTER||f==HPOINTER){ |
| if(p->gpr==0) {p->gpr=2;return 23;} |
| if(p->gpr==1) {p->gpr=3;return 22;} |
| if(p->gpr==2) {p->gpr=4;return 21;} |
| return 0; |
| }else |
| return 13+p->gpr++; |
| } |
| |
| void insert_const(union atyps *p,int t) |
| /* Traegt Konstante in entprechendes Feld ein. */ |
| { |
| if(!p) ierror(0); |
| /* *p = (union atyps) 0 ; /* rfi: clear unused bits */ |
| t&=NU; |
| if(t==BIT) {if(zmeqto(zc2zm(vchar),l2zm(0L))) p->vchar=zm2zc(l2zm(0L)); else p->vchar=zm2zc(l2zm(1L));return;} |
| if(t==CHAR) {p->vchar=vchar;return;} |
| if(t==SHORT) {p->vshort=vshort;return;} |
| if(t==INT) {p->vint=vint;return;} |
| if(t==LONG) {p->vlong=vlong;return;} |
| if(t==LLONG) {p->vllong=vllong;return;} |
| if(t==MAXINT) {p->vmax=vmax;return;} |
| if(t==(UNSIGNED|BIT)) {if(zumeqto(zuc2zum(vuchar),ul2zum(0UL))) p->vuchar=zum2zuc(ul2zum(0UL)); else p->vuchar=zum2zuc(ul2zum(1UL));return;} |
| if(t==(UNSIGNED|CHAR)) {p->vuchar=vuchar;return;} |
| if(t==(UNSIGNED|SHORT)) {p->vushort=vushort;return;} |
| if(t==(UNSIGNED|INT)) {p->vuint=vuint;return;} |
| if(t==(UNSIGNED|LONG)) {p->vulong=vulong;return;} |
| if(t==(UNSIGNED|LLONG)) {p->vullong=vullong;return;} |
| if(t==(UNSIGNED|MAXINT)) {p->vumax=vumax;return;} |
| if(t==FLOAT) {p->vfloat=vfloat;return;} |
| if(t==DOUBLE) {p->vdouble=vdouble;return;} |
| if(t==LDOUBLE) {p->vldouble=vldouble;return;} |
| if(t==NPOINTER) {p->vuint=vuint;return;} |
| if(t==FPOINTER||t==HPOINTER) {p->vulong=vulong;return;} |
| } |
| void eval_const(union atyps *p,int t) |
| /* Weist bestimmten globalen Variablen Wert einer CEXPR zu. */ |
| { |
| int f=t&NQ; |
| if(!p) ierror(0); |
| if(f==MAXINT||(f>=BIT&&f<=LLONG)){ |
| if(!(t&UNSIGNED)){ |
| if(f==BIT){ |
| if(zmeqto(zc2zm(p->vchar),l2zm(0L))) vmax=l2zm(0L); else vmax=l2zm(1L); |
| }else if(f==CHAR) vmax=zc2zm(p->vchar); |
| else if(f==SHORT)vmax=zs2zm(p->vshort); |
| else if(f==INT) vmax=zi2zm(p->vint); |
| else if(f==LONG) vmax=zl2zm(p->vlong); |
| else if(f==LLONG) vmax=zll2zm(p->vllong); |
| else if(f==MAXINT) vmax=p->vmax; |
| else ierror(0); |
| vumax=zm2zum(vmax); |
| vldouble=zm2zld(vmax); |
| }else{ |
| if(f==BIT){ |
| if(zumeqto(zuc2zum(p->vuchar),ul2zum(0UL))) vumax=ul2zum(0UL); else vumax=ul2zum(1UL); |
| }else if(f==CHAR) vumax=zuc2zum(p->vuchar); |
| else if(f==SHORT)vumax=zus2zum(p->vushort); |
| else if(f==INT) vumax=zui2zum(p->vuint); |
| else if(f==LONG) vumax=zul2zum(p->vulong); |
| else if(f==LLONG) vumax=zull2zum(p->vullong); |
| else if(f==MAXINT) vumax=p->vumax; |
| else ierror(0); |
| vmax=zum2zm(vumax); |
| vldouble=zum2zld(vumax); |
| } |
| }else{ |
| if(ISPOINTER(f)){ |
| if(f==NPOINTER) |
| vumax=zui2zum(p->vuint); |
| else |
| vumax=zul2zum(p->vulong); |
| vmax=zum2zm(vumax);vldouble=zum2zld(vumax); |
| }else{ |
| if(f==FLOAT) vldouble=zf2zld(p->vfloat); |
| else if(f==DOUBLE) vldouble=zd2zld(p->vdouble); |
| else vldouble=p->vldouble; |
| vmax=zld2zm(vldouble); |
| vumax=zld2zum(vldouble); |
| } |
| } |
| vfloat=zld2zf(vldouble); |
| vdouble=zld2zd(vldouble); |
| vuchar=zum2zuc(vumax); |
| vushort=zum2zus(vumax); |
| vuint=zum2zui(vumax); |
| vulong=zum2zul(vumax); |
| vullong=zum2zull(vumax); |
| vchar=zm2zc(vmax); |
| vshort=zm2zs(vmax); |
| vint=zm2zi(vmax); |
| vlong=zm2zl(vmax); |
| vllong=zm2zll(vmax); |
| } |
| void printval(FILE *f,union atyps *p,int t) |
| /* Gibt atyps aus. */ |
| { |
| t&=NU; |
| if(t==BIT){fprintf(f,"B");vmax=zc2zm(p->vchar);fprintf(f,"%d",!zmeqto(vmax,l2zm(0L)));} |
| if(t==(UNSIGNED|BIT)){fprintf(f,"UB");vumax=zuc2zum(p->vuchar);fprintf(f,"%d",!zumeqto(vmax,ul2zum(0UL)));} |
| if(t==CHAR){fprintf(f,"C");vmax=zc2zm(p->vchar);printzm(f,vmax);} |
| if(t==(UNSIGNED|CHAR)){fprintf(f,"UC");vumax=zuc2zum(p->vuchar);printzum(f,vumax);} |
| if(t==SHORT){fprintf(f,"S");vmax=zs2zm(p->vshort);printzm(f,vmax);} |
| if(t==(UNSIGNED|SHORT)){fprintf(f,"US");vumax=zus2zum(p->vushort);printzum(f,vumax);} |
| if(t==FLOAT){fprintf(f,"F");vldouble=zf2zld(p->vfloat);printzld(f,vldouble);} |
| if(t==DOUBLE){fprintf(f,"D");vldouble=zd2zld(p->vdouble);printzld(f,vldouble);} |
| if(t==LDOUBLE){fprintf(f,"LD");printzld(f,p->vldouble);} |
| if(t==INT){fprintf(f,"I");vmax=zi2zm(p->vint);printzm(f,vmax);} |
| if(t==(UNSIGNED|INT)||t==NPOINTER){fprintf(f,"UI");vumax=zui2zum(p->vuint);printzum(f,vumax);} |
| if(t==LONG){fprintf(f,"L");vmax=zl2zm(p->vlong);printzm(f,vmax);} |
| if(t==(UNSIGNED|LONG)||t==FPOINTER||t==HPOINTER){fprintf(f,"UL");vumax=zul2zum(p->vulong);printzum(f,vumax);} |
| if(t==LLONG){fprintf(f,"LL");vmax=zll2zm(p->vllong);printzm(f,vmax);} |
| if(t==(UNSIGNED|LLONG)){fprintf(f,"ULL");vumax=zull2zum(p->vullong);printzum(f,vumax);} |
| if(t==MAXINT) printzm(f,p->vmax); |
| if(t==(UNSIGNED|MAXINT)) printzum(f,p->vumax); |
| } |
| void emitval(FILE *f,union atyps *p,int t) |
| /* Gibt atyps aus. */ |
| { |
| t&=NU; |
| if(t==BIT){vmax=zc2zm(p->vchar);emit(f,"%d",!zmeqto(vmax,l2zm(0L)));} |
| if(t==(UNSIGNED|BIT)){vumax=zuc2zum(p->vuchar);emit(f,"%d",!zumeqto(vumax,ul2zum(0UL)));} |
| if(t==CHAR){vmax=zc2zm(p->vchar);emitzm(f,vmax);} |
| if(t==(UNSIGNED|CHAR)){vumax=zuc2zum(p->vuchar);emitzum(f,vumax);} |
| if(t==SHORT){vmax=zs2zm(p->vshort);emitzm(f,vmax);} |
| if(t==(UNSIGNED|SHORT)){vumax=zus2zum(p->vushort);emitzum(f,vumax);} |
| if(t==FLOAT){vldouble=zf2zld(p->vfloat);emitzld(f,vldouble);} |
| if(t==DOUBLE){vldouble=zd2zld(p->vdouble);emitzld(f,vldouble);} |
| if(t==LDOUBLE){emitzld(f,p->vldouble);} |
| if(t==INT){vmax=zi2zm(p->vint);emitzm(f,vmax);} |
| if(t==(UNSIGNED|INT)||t==NPOINTER){vumax=zui2zum(p->vuint);emitzum(f,vumax);} |
| if(t==LONG){vmax=zl2zm(p->vlong);emitzm(f,vmax);} |
| if(t==(UNSIGNED|LONG)||t==FPOINTER||t==HPOINTER){vumax=zul2zum(p->vulong);emitzum(f,vumax);} |
| if(t==LLONG){vmax=zll2zm(p->vllong);emitzm(f,vmax);} |
| if(t==(UNSIGNED|LLONG)){vumax=zull2zum(p->vullong);emitzum(f,vumax);} |
| if(t==MAXINT) emitzm(f,p->vmax); |
| if(t==(UNSIGNED|MAXINT)) emitzum(f,p->vumax); |
| } |
| void conv_typ(struct Typ *p) |
| /* Erzeugt extended types in einem Typ. */ |
| { |
| char *attr; |
| while(p){ |
| if(ISPOINTER(p->flags)){ |
| p->flags=((p->flags&~NU)|POINTER_TYPE(p->next)); |
| if(attr=p->next->attr){ |
| if(strstr(attr,STR_NEAR)) |
| p->flags=((p->flags&~NU)|NPOINTER); |
| if(strstr(attr,STR_FAR)) |
| p->flags=((p->flags&~NU)|FPOINTER); |
| if(strstr(attr,STR_HUGE)) |
| p->flags=((p->flags&~NU)|HPOINTER); |
| } |
| } |
| if(ISINT(p->flags)&&(attr=p->attr)&&strstr(attr,"bit")) |
| p->flags=((p->flags&~NU)|BIT); |
| p=p->next; |
| } |
| } |
| |
| void init_db(FILE *f) |
| { |
| } |
| |
| void cleanup_db(FILE *f) |
| { |
| } |
| |
| char *use_libcall(int c,int t,int t2) |
| { |
| static char fname[16]; |
| char *ret=0,*tt; |
| |
| if(c==COMPARE){ |
| if((t&NQ)==LLONG||ISFLOAT(t)){ |
| sprintf(fname,"__cmp%s%s%ld",(t&UNSIGNED)?"u":"s",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8); |
| ret=fname; |
| } |
| }else{ |
| t&=NU; |
| t2&=NU; |
| if(t==LDOUBLE) t=DOUBLE; |
| if(t2==LDOUBLE) t2=DOUBLE; |
| if(c==CONVERT){ |
| if(t==t2) return 0; |
| if(t==FLOAT&&t2==DOUBLE) return "__flt64toflt32"; |
| if(t==DOUBLE&&t2==FLOAT) return "__flt32toflt64"; |
| |
| if(ISFLOAT(t)){ |
| sprintf(fname,"__%cint%ldtoflt%d",(t2&UNSIGNED)?'u':'s',zm2l(sizetab[t2&NQ])*8,(t==FLOAT)?32:64); |
| ret=fname; |
| } |
| if(ISFLOAT(t2)&&(t&NU)==LLONG){ |
| sprintf(fname,"__flt%dto%cint%ld",((t2&NU)==FLOAT)?32:64,(t&UNSIGNED)?'u':'s',zm2l(sizetab[t&NQ])*8); |
| ret=fname; |
| } |
| } |
| if((t&NQ)==LLONG||ISFLOAT(t)){ |
| if((c>=LSHIFT&&c<=MOD)||(c>=OR&&c<=AND)||c==KOMPLEMENT||c==MINUS){ |
| if(t==(UNSIGNED|LLONG)&&(c==DIV||c==MOD||c==RSHIFT)){ |
| sprintf(fname,"__%suint64",ename[c]); |
| ret=fname; |
| }else if((t&NQ)==LLONG){ |
| sprintf(fname,"__%sint64",ename[c]); |
| ret=fname; |
| }else{ |
| sprintf(fname,"__%s%s%s%ld",ename[c],(t&UNSIGNED)?"u":"",ISFLOAT(t)?"flt":"int",zm2l(sizetab[t&NQ])*8); |
| ret=fname; |
| } |
| } |
| } |
| } |
| |
| |
| return ret; |
| } |