Gitiles
Code Review Sign In
pulkomandy.tk / vbcc / refs/heads/main / . / machines / alpha / machine.c
blob: c5038c058e42b8616c12ae35c6f94cfae25472da [file] [log] [blame]
/* Code generator for a DEC Alpha 64bit RISC cpu with 32 */
/* general purpose and 32 floating point registers. */
#include "supp.h"
static char FILE_[]=__FILE__;
#include "dwarf2.c"
/* Public data that MUST be there. */
/* Name and copyright. */
char cg_copyright[]="vbcc code-generator for DEC Alpha V0.3c (c) in 1997-2000 by Volker Barthelmann";
/* Commandline-flags the code-generator accepts */
int g_flags[MAXGF]={VALFLAG,VALFLAG,0,0,0,0,0};
char *g_flags_name[MAXGF]={"cpu","fpu","const-in-data","sd","merge-constants","stabs","no-builtins"};
union ppi g_flags_val[MAXGF];
/* Alignment-requirements for all types in bytes. */
zmax align[MAX_TYPE+1];
/* Alignment that is sufficient for every object. */
zmax maxalign;
/* CHAR_BIT for the target machine. */
zmax char_bit;
/* Tabelle fuer die Groesse der einzelnen Typen */
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[MAXR+1]={"noreg",
"$0","$1","$2","$3","$4","$5","$6","$7",
"$8","$9","$10","$11","$12","$13","$14","$15",
"$16","$17","$18","$19","$20","$21","$22","$23",
"$24","$25","$26","$27","$28","$29","$30","$31",
"$f0","$f1","$f2","$f3","$f4","$f5","$f6","$f7",
"$f8","$f9","$f10","$f11","$f12","$f13","$f14","$f15",
"$f16","$f17","$f18","$f19","$f20","$f21","$f22","$f23",
"$f24","$f25","$f26","$f27","$f28","$f29","$f30","$f31"};
/* The Size of each register in bytes. */
zmax regsize[MAXR+1];
/* A type which can store each register. */
struct Typ *regtype[MAXR+1];
/* regsa[reg]!=0 if a certain register is allocated and should */
/* not be used by the compiler pass. */
int regsa[MAXR+1];
/* Specifies which registers may be scratched by functions. */
int regscratch[MAXR+1]={0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,1,
1,1,0,0,0,0,0,0,0,0,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
struct reg_handle empty_reg_handle={0};
/****************************************/
/* Private data and functions. */
/****************************************/
static long malign[MAX_TYPE+1]= {1,1,2,4,8,8,4,8,8,1,8,1,1,1,4,1};
static long msizetab[MAX_TYPE+1]={1,1,2,4,8,8,4,8,8,0,8,0,0,0,4,0};
static struct Typ ltyp={LONG};
static char x_t[MAX_TYPE+1]={'?','b','w','l','q','q','s','t','t','?','q'};
static int sp=31; /* Stackpointer */
static int gp=30; /* Global pointer */
static int lr=27; /* Link Register */
static int vp=28; /* Virtual frame pointer */
static int r31=32; /* Read as zero */
static int f31=64; /* Read as zero */
static int sd=14; /* SmallDataPointer */
static int t1=2,t2=3,t3=4; /* Temporaries used by code generator */
static int t4=5,t5=6;
static int f1=34,f2=35,f3=36; /* Temporaries used by code generator */
#define DATA 0
#define BSS 1
#define CODE 2
static char *marray[]={"__ALPHA__",0};
static int section=-1,newobj,crsave,helpl,helps,stabs;
static char *codename="\t.text\n",*dataname="\t.data\n",*bssname="";
static int balign(struct obj *);
static char *labprefix="$C",*idprefix="";
static long framesize,frameoffset;
static void probj2(FILE *f,struct obj *p,int t);
#define ESGN 1
#define EUNS 2
static int st[MAXR+1];
static struct fpconstlist {
struct fpconstlist *next;
int label,typ;
union atyps val;
} *firstfpc;
static void move_reg(FILE *f,int s,int t)
{
if(t==r31||t==f31) ierror(0);
if(s<=32&&t>32) ierror(0);
if(t<=32&&s>32) ierror(0);
if(s==t) return;
if(s<=32){
emit(f,"\tbis\t%s,%s,%s\n",regnames[r31],regnames[s],regnames[t]);
}else{
emit(f,"\tcpys\t%s,%s,%s\n",regnames[s],regnames[s],regnames[t]);
}
st[t]=st[s];
}
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==INT&&zmeqto(vmax,zi2zm(o->val.vint))) return p->label;
if(t==LONG&&zmeqto(vmax,zl2zm(o->val.vlong))) return p->label;
if(t==LLONG&&zmeqto(vmax,zll2zm(o->val.vllong))) return p->label;
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;
}
#define REG_IND 1
#define IMM_IND 2
static struct obj *cam(int flags,int base,int align,long offset)
/* 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.align=align;
return &obj;
}
void title(FILE *f)
{
static int done;
extern char *inname; /*grmpf*/
if(!done&&f){
done=1;
emit(f,"\t.file\t\"%s\"\n",inname);
}
}
static char *dct[]={"??","byte","short","long","quad","long","long","quad","??","??","??","??"};
static void load_address(FILE *f,int r,struct obj *o,int typ)
/* Generates code to load the address of a variable into register r. */
{
if((o->flags&VAR)&&(o->v->storage_class==AUTO||o->v->storage_class==REGISTER)){
long of=zm2l(o->v->offset);
if(of>=0)
of+=frameoffset+zm2l(o->val.vlong);
else
of=-of-zm2l(maxalign)+framesize+zm2l(o->val.vmax);
if(of>32767) ierror(0);
emit(f,"\tlda\t%s,%ld(%s)\n",regnames[r],of,regnames[sp]);
}else{
emit(f,"\tlda\t%s,",regnames[r]);
probj2(f,o,typ);emit(f,"\n");
}
st[r]=ESGN;
}
static void load_obj(FILE *f,int r,struct obj *o,int typ,int tmp)
{
int adr,shift,al;
switch(typ&NQ){
case POINTER:
case LDOUBLE:
case DOUBLE:
case FLOAT:
case LLONG:
case LONG:
case INT:
emit(f,"\tld%c\t%s,",x_t[typ&NQ],regnames[r]);
probj2(f,o,typ);emit(f,"\n");
st[r]=ESGN;return;
case SHORT:
al=balign(o);
if(al>=0){
emit(f,"\tldq_u\t%s,",regnames[r]);
probj2(f,o,typ);emit(f,"\n");
shift=64-16-al*8;
if(shift) emit(f,"\tsll\t%s,%d,%s\n",regnames[r],shift,regnames[r]);
if(typ&UNSIGNED){
emit(f,"\tsrl\t%s,%d,%s\n",regnames[r],64-16,regnames[r]);
st[r]=EUNS;
}else{
emit(f,"\tsra\t%s,%d,%s\n",regnames[r],64-16,regnames[r]);
st[r]=ESGN;
}
return;
}
adr=0;
if(o->am&&o->am->offset==0)
adr=o->am->base;
else if(zmeqto(o->val.vmax,l2zm(0L)))
adr=o->reg;
if(!adr){
adr=tmp;load_address(f,adr,o,POINTER);
}
if(typ&UNSIGNED){
emit(f,"\tbic\t%s,6,%s\n",regnames[adr],regnames[t4]); /* ldq_u ? */
emit(f,"\tldq\t%s,0(%s)\n",regnames[t5],regnames[t4]);
emit(f,"\tbic\t%s,1,%s\n",regnames[adr],regnames[t4]);
emit(f,"\textwl\t%s,%s,%s\n",regnames[t5],regnames[t4],regnames[r]);
/*
emit(f,"\tbic\t%s,2,%s\n",regnames[adr],regnames[t4]);
emit(f,"\tand\t%s,2,%s\n",regnames[adr],regnames[t5]);
emit(f,"\tldq\t%s,0(%s)\n",regnames[r],regnames[t4]);
emit(f,"\textwh\t%s,%s,%s\n",regnames[r],regnames[t5],regnames[r]);
*/
st[r]=EUNS;return;
}else{
emit(f,"\tbic\t%s,6,%s\n",regnames[adr],regnames[t4]);
emit(f,"\tand\t%s,6,%s\n",regnames[adr],regnames[t5]);
emit(f,"\tldq\t%s,0(%s)\n",regnames[r],regnames[t4]);
emit(f,"\tlda\t%s,2(%s)\n",regnames[t5],regnames[t5]);
emit(f,"\textqh\t%s,%s,%s\n",regnames[r],regnames[t5],regnames[r]);
emit(f,"\tsra\t%s,48,%s\n",regnames[r],regnames[r]);
st[r]=ESGN;return;
}
case CHAR:
al=balign(o);
if(al>=0){
emit(f,"\tldq_u\t%s,",regnames[r]);
probj2(f,o,typ);emit(f,"\n");
shift=64-8-al*8;
if(shift&&al) emit(f,"\tsll\t%s,%d,%s\n",regnames[r],shift,regnames[r]);
if(typ&UNSIGNED){
if(al==0)
emit(f,"\tand\t%s,255,%s\n",regnames[r],regnames[r]);
else
emit(f,"\tsrl\t%s,%d,%s\n",regnames[r],64-8,regnames[r]);
st[r]=EUNS;
}else{
if(al==0)
emit(f,"\tsextb\t%s,%s\n",regnames[r],regnames[r]);
else
emit(f,"\tsra\t%s,%d,%s\n",regnames[r],64-8,regnames[r]);
st[r]=ESGN;
}
return;
}
if(typ&UNSIGNED){
adr=0;
if(o->am&&o->am->offset==0)
adr=o->am->base;
else if(zmeqto(o->val.vmax,l2zm(0L)))
adr=o->reg;
if(!adr){
adr=tmp; load_address(f,adr,o,POINTER);
}
emit(f,"\tldq_u\t%s,0(%s)\n",regnames[r],regnames[adr]);
emit(f,"\textbl\t%s,%s,%s\n",regnames[r],regnames[adr],regnames[r]);
st[r]=EUNS;return;
}else{
emit(f,"\tldq_u\t%s,",regnames[t5]);
probj2(f,o,typ);emit(f,"\n\tlda\t%s,",regnames[t4]);
if(o->am) o->am->offset++; else o->val.vmax=zmadd(o->val.vmax,l2zm(1L));
probj2(f,o,typ);
if(o->am) o->am->offset--; else o->val.vmax=zmsub(o->val.vmax,l2zm(1L));
emit(f,"\n\textqh\t%s,%s,%s\n",regnames[t5],regnames[t4],regnames[t5]);
emit(f,"\tsra\t%s,56,%s\n",regnames[t5],regnames[r]);
st[r]=ESGN;return;
}
}
ierror(0);
}
static void load_reg(FILE *f,int r,struct obj *o,int typ,int tmp)
/* Generates code to load a memory object into register r. tmp is a */
/* general purpose register which may be used. tmp can be r. */
{
typ&=NU;
if(o->am){
load_obj(f,r,o,typ,tmp);
return;
}
if(o->flags&KONST){
long l;int lab;
eval_const(&o->val,typ);
if(ISFLOAT(typ)){
lab=addfpconst(o,typ);
emit(f,"\tlda\t%s,%s%d\n",regnames[tmp],labprefix,lab);
emit(f,"\tld%c\t%s,0(%s)\n",x_t[typ&NQ],regnames[r],regnames[tmp]);
st[r]=ESGN;
return;
}
if(zmleq(vmax,l2zm(32767))&&zmleq(l2zm(-32768),vmax)){
emit(f,"\tlda\t%s,%ld(%s)\n",regnames[r],zm2l(vmax),regnames[r31]);
}else{
/* if((typ&NQ)<INT) ierror(0); */
lab=addfpconst(o,typ);
emit(f,"\tlda\t%s,%s%d\n",regnames[tmp],labprefix,lab);
emit(f,"\tldq\t%s,0(%s)\n",regnames[r],regnames[tmp]);
}
st[r]=ESGN;
return;
}
if((o->flags&VAR)&&(o->v->storage_class==EXTERN||o->v->storage_class==STATIC)){
if(!(o->flags&VARADR)){
load_address(f,tmp,o,POINTER);
load_obj(f,r,cam(IMM_IND,tmp,balign(o),0L),typ,tmp);
}else{
load_address(f,r,o,POINTER);
}
}else{
if(o->am||(o->flags&(DREFOBJ|REG))==REG){
if(r!=o->reg)
move_reg(f,o->reg,r);
}else{
if(o->flags&DREFOBJ) ierror(0);
load_obj(f,r,o,typ,tmp);
}
}
}
static void store_reg(FILE *f,int r,struct obj *o,int typ)
/* Generates code to store register r into memory object o. */
{
int adr,t6,t7;
if((o->flags&(REG|DREFOBJ))==REG) ierror(0);
if(r==t1){ t6=t2;t7=t3;}
else if(r==t2) {t6=t1;t7=t3;}
else {t6=t1;t7=t2;}
if((typ&NQ)>SHORT){
if((o->flags&VAR)&&(o->v->storage_class==EXTERN||o->v->storage_class==STATIC)){
load_address(f,t6,o,POINTER);
emit(f,"\tst%c\t%s,0(%s)\n",x_t[typ&NQ],regnames[r],regnames[t6]);
return;
}
emit(f,"\tst%c\t%s,",x_t[typ&NQ],regnames[r]);
probj2(f,o,typ);emit(f,"\n");
return;
}else{
adr=0;
if(o->am&&o->am->offset==0){
adr=o->am->base;
if(adr<1||adr>32) ierror(0);
}else if((o->flags&REG)&&zmeqto(o->val.vmax,l2zm(0L))){
adr=o->reg;
if(adr<1||adr>32) ierror(0);
}
if(!adr){
adr=t7; load_address(f,adr,o,POINTER);
}
if(adr<1||adr>32) ierror(0);
if((typ&NQ)==SHORT){
emit(f,"\tbic\t%s,2,%s\n",regnames[adr],regnames[t4]);
emit(f,"\tldl\t%s,0(%s)\n",regnames[t6],regnames[t4]);
emit(f,"\tand\t%s,2,%s\n",regnames[adr],regnames[t5]);
emit(f,"\tmskwl\t%s,%s,%s\n",regnames[t6],regnames[t5],regnames[t6]);
emit(f,"\tinswl\t%s,%s,%s\n",regnames[r],regnames[t5],regnames[t7]);
emit(f,"\tbis\t%s,%s,%s\n",regnames[t6],regnames[t7],regnames[t6]);
emit(f,"\tstl\t%s,0(%s)\n",regnames[t6],regnames[t4]);
return;
}else{
emit(f,"\tldq_u\t%s,0(%s)\n",regnames[t4],regnames[adr]);
emit(f,"\tmskbl\t%s,%s,%s\n",regnames[t4],regnames[adr],regnames[t4]);
emit(f,"\tinsbl\t%s,%s,%s\n",regnames[r],regnames[adr],regnames[t5]);
emit(f,"\tbis\t%s,%s,%s\n",regnames[t4],regnames[t5],regnames[t4]);
emit(f,"\tstq_u\t%s,0(%s)\n",regnames[t4],regnames[adr]);
return;
}
}
}
static void extend(FILE *f,int r)
{
if(!r) return;
if(st[r]==ESGN) return;
emit(f,"\taddl\t%s,%s,%s\n",regnames[r],regnames[r31],regnames[r]);
st[r]=ESGN;
}
static void uextend(FILE *f,int r)
{
if(!r) return;
if(st[r]==EUNS) return;
emit(f,"\tzapnot\t%s,15,%s\n",regnames[r],regnames[r]);
st[r]=EUNS;
}
static struct IC *do_refs(FILE *,struct IC *);
static void pr(FILE *,struct IC *);
static void function_top(FILE *,struct Var *,long,long);
static void function_bottom(FILE *f,struct Var *,long,long);
#define isreg(x) ((p->x.flags&(REG|DREFOBJ))==REG)
static int q1reg,q2reg,zreg;
static char *ccs[]={"eq","ne","lt","ge","le","gt",""};
static char *logicals[]={"bis","xor","and"};
static char *arithmetics[]={"sll","srl","add","sub","mul","div","rem"};
static struct IC *do_refs(FILE *f,struct IC *p)
/* Does some pre-processing like fetching operands from memory to */
/* registers etc. */
{
int typ=p->typf,typ1,reg,c=p->code;
typ=q1typ(p);
if(ISPOINTER(typ)) typ=(UNSIGNED|LONG);
q1reg=q2reg=zreg=0;
if(p->q1.flags&REG) q1reg=p->q1.reg;
if(p->q2.flags&REG) q2reg=p->q2.reg;
if((p->z.flags&(REG|DREFOBJ))==REG) zreg=p->z.reg;
if((p->q1.flags&(KONST|DREFOBJ))==KONST){
eval_const(&p->q1.val,typ);
if(zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))&&zldeqto(vldouble,d2zld(0.0))){
if(ISFLOAT(typ)) q1reg=f31; else q1reg=r31;
}else{
if(ISFLOAT(typ)) reg=f1; else reg=t1;
if(c==ASSIGN&&zreg) reg=zreg;
if(c==SETRETURN&&p->z.reg) reg=p->z.reg;
if((c==MOD||c==DIV)&&ISINT(typ)&&!regs[25]) reg=25; /* Linux-div */
if(ISFLOAT(typ)||c==DIV||c==SUB||c==ASSIGN||c==PUSH||c==SETRETURN||c==LSHIFT||c==RSHIFT||c==COMPARE){
load_reg(f,reg,&p->q1,typ,t1);
q1reg=reg;
}else{
if(ISINT(typ)){
if(!zumleq(vumax,ul2zum(255UL))||!zmleq(vmax,l2zm(255L))||zmleq(vmax,l2zm(-1L))){
load_reg(f,reg,&p->q2,typ,t1);
q1reg=reg;
}
}
}
}
}else if(c!=ADDRESS){
if(p->q1.flags&&!q1reg){
if(ISFLOAT(typ)) reg=f1; else reg=t1;
if((c==ASSIGN||c==CONVERT)&&zreg&&(reg-r31)*(zreg-r31)>0) reg=zreg;
if(c==SETRETURN&&p->z.reg) reg=p->z.reg;
if((p->q1.flags&DREFOBJ)||c==ADDI2P||c==SUBIFP) {typ1=POINTER;reg=t1;} else typ1=typ;
if(c==CALL) reg=vp;
if((c==MOD||c==DIV)&&ISINT(typ1)&&!regs[25]) reg=25; /* Linux-div */
if(ISSCALAR(typ1)){
int m=p->q1.flags;
p->q1.flags&=~DREFOBJ;
load_reg(f,reg,&p->q1,typ1,t1);
p->q1.flags=m;
q1reg=reg;
}
}
if((p->q1.flags&DREFOBJ)&&ISSCALAR(typ)){
if(ISFLOAT(typ)) reg=f1; else reg=t1;
if((c==ASSIGN||c==CONVERT)&&zreg&&regok(zreg,typ,0)) reg=zreg;
if(c==SETRETURN&&p->z.reg) reg=p->z.reg;
if((c==MOD||c==DIV)&&(typ&NQ)<=LONG&&!regs[25]) reg=25; /* Linux-div */
if(c==ADDI2P||c==SUBIFP)
load_reg(f,reg,cam(IMM_IND,q1reg,-1,0),POINTER,t1);
else
load_reg(f,reg,cam(IMM_IND,q1reg,-1,0),typ,t1);
q1reg=reg;
}
}
typ=q2typ(p);
if((p->q2.flags&(KONST|DREFOBJ))==KONST){
eval_const(&p->q2.val,typ);
if(zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))&&zldeqto(vldouble,d2zld(0.0))){
if(ISFLOAT(typ)) q2reg=f31; else q2reg=r31;
}else{
if(ISFLOAT(typ)) reg=f2; else reg=t2;
if((c==MOD||c==DIV)&&ISINT(typ)&&!regs[26]) reg=26; /* Linux-div */
if(ISFLOAT(typ)){
load_reg(f,reg,&p->q2,typ,t2);
q2reg=reg;
}else{
if(ISINT(typ)){
if(!zumleq(vumax,ul2zum(255UL))||!zmleq(vmax,l2zm(255L))||zmleq(vmax,l2zm(-1L))){
load_reg(f,reg,&p->q2,typ,t2);
q2reg=reg;
}
}
}
}
}else{
if(p->q2.flags&&!q2reg){
if(p->q2.flags&DREFOBJ) typ1=POINTER; else typ1=typ;
if(ISFLOAT(typ1)) reg=f2; else reg=t2;
if((c==MOD||c==DIV)&&ISINT(typ1)&&!regs[26]) reg=26; /* Linux-div */
if(ISSCALAR(typ1)){
int m=p->q2.flags;
p->q2.flags&=~DREFOBJ;
load_reg(f,reg,&p->q2,typ1,t2);
p->q2.flags=m;
q2reg=reg;
}
}
if((p->q2.flags&DREFOBJ)&&ISSCALAR(typ)){
if(ISFLOAT(typ)) reg=f2; else reg=t2;
if((c==MOD||c==DIV)&&ISINT(typ)&&!regs[26]) reg=26; /* Linux-div */
load_reg(f,reg,cam(IMM_IND,q2reg,-1,0),typ,t2);
q2reg=reg;
}
}
if(p->z.flags&&!isreg(z)){
typ=ztyp(p);
if(ISFLOAT(typ)) zreg=f3; else zreg=t3;
if((c==MOD||c==DIV)&&ISINT(typ)&&!regs[28]) zreg=28; /* Linux-div */
}
if(q1reg){ p->q1.flags=REG; p->q1.reg=q1reg;}
if(q2reg){ p->q2.flags=REG; p->q2.reg=q2reg;}
return p;
}
static long pof2(zumax x)
/* Yields log2(x)+1 oder 0. */
{
zumax p;int ln=1;
p=ul2zum(1L);
while(ln<=64&&zumleq(p,x)){
if(zumeqto(x,p)) return ln;
ln++;p=zumadd(p,p);
}
return 0;
}
static void pr(FILE *f,struct IC *p)
/* Writes the destination register to the real destination if necessary. */
{
int typ=p->typf;
if(p->z.flags){
if(p->code==ADDRESS||p->code==ADDI2P||p->code==SUBIFP) typ=POINTER;
if(!isreg(z)){
if(p->z.flags&DREFOBJ){
if(p->z.flags&REG){
store_reg(f,zreg,cam(IMM_IND,p->z.reg,-1,0),typ);
}else{
int r,m;
if(t1==zreg) r=t2; else r=t1;
m=p->z.flags;
p->z.flags&=~DREFOBJ;
load_reg(f,r,&p->z,POINTER,r);
p->z.flags=m;
store_reg(f,zreg,cam(IMM_IND,r,balign(&p->z),0),typ);
}
}else{
store_reg(f,zreg,&p->z,typ);
}
}else{
if(p->z.reg!=zreg)
move_reg(f,zreg,p->z.reg);
}
}
}
static void probj2(FILE *f,struct obj *p,int t)
/* Prints an object. */
{
if(p->am){
if(p->am->flags==REG_IND) ierror(0);
if(p->am->flags==IMM_IND) emit(f,"%ld(%s)",p->am->offset,regnames[p->am->base]);
return;
}
if(p->flags&DREFOBJ) emit(f,"(");
if(p->flags&VAR) {
if(p->v->storage_class==AUTO||p->v->storage_class==REGISTER){
if(p->flags&REG){
emit(f,"%s",regnames[p->reg]);
}else{
long of=zm2l(p->v->offset);
if(of>=0)
of+=frameoffset+zm2l(p->val.vmax);
else
of=-of-zm2l(maxalign)+framesize+zm2l(p->val.vmax);
if(of>32767) ierror(0);
emit(f,"%ld(%s)",of,regnames[sp]);
}
}else{
if(!zmeqto(l2zm(0L),p->val.vmax)){emitval(f,&p->val,MAXINT);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&REG)&&!(p->flags&VAR)) emit(f,"%s",regnames[p->reg]);
if(p->flags&KONST){
emitval(f,&p->val,t&NU);
}
if(p->flags&DREFOBJ) emit(f,")");
}
static void dwarf2_print_frame_location(FILE *f,struct Var *v)
{
struct obj o;
o.flags=REG;
/*FIXME: need correct register translation */
o.reg=sp;
o.val.vmax=l2zm(0L);
o.v=0;
dwarf2_print_location(f,&o);
}
static int dwarf2_regnumber(int r)
{
/*FIXME: needs correct translation */
return r-1;
}
static zmax dwarf2_fboffset(struct Var *v)
{
long of;
if(!v||(v->storage_class!=AUTO&&v->storage_class!=REGISTER)) ierror(0);
of=zm2l(v->offset);
if(of>=0)
of+=frameoffset;
else
of=-of-zm2l(maxalign)+framesize;
if(of>32767) ierror(0);
return l2zm(of);
}
static void function_top(FILE *f,struct Var *v,long offset,long maxpushed)
/* Generates function top. */
{
int i;
emit(f,"\t.set\tnoat\n");
if(section!=CODE){emit(f,codename);if(f) section=CODE;}
emit(f,"\t.align\t3\n");
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.ent\t%s%s\n",idprefix,v->identifier);
if(v->storage_class==STATIC)
emit(f,"%s%ld:\n",labprefix,zm2l(v->offset));
else
emit(f,"%s%s:\n",idprefix,v->identifier);
if(function_calls) emit(f,"\tldgp\t%s,0(%s)\n",regnames[gp],regnames[vp]);
if(v->storage_class==STATIC)
emit(f,"%s%ld..ng:\n",labprefix,zm2l(v->offset));
else
emit(f,"%s%s..ng:\n",idprefix,v->identifier);
framesize=offset+maxpushed;
if(function_calls) framesize+=8; /* lr */
for(i=1;i<=MAXR;i++)
if(regused[i]&&!regscratch[i]&&!regsa[i])
framesize+=8;
framesize=((framesize+16-1)/16)*16;
if(framesize>32767) ierror(0);
if(framesize) emit(f,"\tlda\t%s,%ld(%s)\n",regnames[sp],-framesize,regnames[sp]);
emit(f,"\t.frame\t%s,%ld,%s,0\n",regnames[sp],framesize,regnames[lr]);
frameoffset=maxpushed;
if(function_calls){
emit(f,"\tstq\t%s,%ld(%s)\n",regnames[lr],frameoffset,regnames[sp]);
frameoffset+=8;
}
for(i=1;i<=MAXR;i++){
if(regused[i]&&!regscratch[i]&&!regsa[i]){
if(i<=32){
emit(f,"\tstq\t%s,%ld(%s)\n",regnames[i],frameoffset,regnames[sp]);
}else{
emit(f,"\tstt\t%s,%ld(%s)\n",regnames[i],frameoffset,regnames[sp]);
}
frameoffset+=8;
}
}
emit(f,"\t.mask\t0x4000000,%ld\n",-framesize);
emit(f,"\t.prologue\t%c\n",function_calls?'1':'0');
}
static void function_bottom(FILE *f,struct Var *v,long offset,long maxpushed)
/* Generates function bottom. */
{
int i;
frameoffset=maxpushed;
if(function_calls){
emit(f,"\tldq\t%s,%ld(%s)\n",regnames[lr],frameoffset,regnames[sp]);
frameoffset+=8;
}
for(i=1;i<=MAXR;i++){
if(regused[i]&&!regscratch[i]&&!regsa[i]){
if(i<=32){
emit(f,"\tldq\t%s,%ld(%s)\n",regnames[i],frameoffset,regnames[sp]);
}else{
emit(f,"\tldt\t%s,%ld(%s)\n",regnames[i],frameoffset,regnames[sp]);
}
frameoffset+=8;
}
}
if(framesize) emit(f,"\tlda\t%s,%ld(%s)\n",regnames[sp],framesize,regnames[sp]);
emit(f,"\tret\t%s,(%s),1\n",regnames[r31],regnames[lr]);
emit(f,"\t.end\t%s%s\n",idprefix,v->identifier);
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);
}
static int balign(struct obj *o)
/* Liefert die unteren 3 Bits des Objekts. -1 wenn unklar. */
{
int sc;
if(o->flags&DREFOBJ) return -1;
if(o->am) return o->am->align;
if(!(o->flags&VAR)) ierror(0);
sc=o->v->storage_class;
if(sc==EXTERN||sc==STATIC){
/* Alle statischen Daten werden vom cg auf 64bit alignt. */
return zm2l(zmand(o->val.vmax,l2zm(7L)));
}
if(sc==AUTO||sc==REGISTER){
zmax of=o->v->offset;
if(!zmleq(l2zm(0L),of))
of=zmsub(l2zm(0L),zmadd(of,maxalign));
return zm2l(zmand(zmadd(of,o->val.vmax),l2zm(7L)));
}
ierror(0);
}
/* Routinen fuer Debug-Informationen mit stabs. */
static int debug_blabel,debug_elabel;
static int debug_type(FILE *,struct Typ *);
static void debug_init(FILE *,struct Var *);
static void debug_exit(FILE *,struct Var *);
static void debug_var(FILE *,struct obj *);
static void debug_IC(FILE *,struct IC *);
static void debug_cleanup(FILE *);
static int debug_type(FILE *f,struct Typ *t)
/* Liefert Typindex. */
{
return t->flags&NU;
}
static void debug_init(FILE *f,struct Var *v)
/* Debug-Infos. Wird am Anfang von gen_code aufgerufen. */
{
static int did_header;
if(!did_header){
emit(f,"\t.stabs \"\",100,0,0,%stext0\n",labprefix);
emit(f,"\t.stabs \"%s\",100,0,0,%stext0\n",filename,labprefix);
emit(f,"\t.text\n%stext0:\n",labprefix);if(f) section=CODE;
emit(f,"\t.stabs\t\"char:t%d=r1;-128;127;\",128,0,0,0\n",CHAR);
emit(f,"\t.stabs\t\"short:t%d=r1;-32768;32767;\",128,0,0,0\n",SHORT);
emit(f,"\t.stabs\t\"int:t%d=r1;-2147483648;2147483647;\",128,0,0,0\n",INT);
emit(f,"\t.stabs\t\"long:t%d=r1;001000000000000000000000;000777777777777777777777;\",128,0,0,0\n",LONG);
emit(f,"\t.stabs\t\"unsigned char:t%d=r1;0;255;\",128,0,0,0\n",UNSIGNED|CHAR);
emit(f,"\t.stabs\t\"unsigned short:t%d=r1;0;65535;\",128,0,0,0\n",UNSIGNED|SHORT);
emit(f,"\t.stabs\t\"unsigned int:t%d=r1;0;-1;\",128,0,0,0\n",UNSIGNED|INT);
emit(f,"\t.stabs\t\"unsigned long:t%d=r1;0;-1;\",128,0,0,0\n",UNSIGNED|LONG);
emit(f,"\t.stabs\t\"float:t%d=r1;4;0;\",128,0,0,0\n",FLOAT);
emit(f,"\t.stabs\t\"double:t%d=r1;8;0;\",128,0,0,0\n",DOUBLE);
emit(f,"\t.stabs\t\"void:t%d=%d;8;0;\",128,0,0,0\n",VOID,VOID);
did_header=1;
}
emit(f,"\t.stabs\t\"%s:F%d\",36,0,0,%s%s\n",v->identifier,debug_type(f,v->vtyp->next),idprefix,v->identifier);
debug_blabel=++label;debug_elabel=++label;
}
static void debug_exit(FILE *f,struct Var *v)
/* Debug-Infos. Wird am Ende von gen_code aufgerufen. */
{
struct IC *p;
ierror(0);
emit(f,"\t.stabn\t192,0,0,%s%d\n",labprefix,debug_blabel);
emit(f,"\t.stabn\t224,0,0,%s%d\n",labprefix,debug_elabel);
for(p=first_ic;p;p=p->next){
if(p->q1.flags&VAR) debug_var(f,&p->q1);
if(p->q2.flags&VAR) debug_var(f,&p->q2);
if(p->z.flags&VAR) debug_var(f,&p->z);
}
}
static void debug_var(FILE *f,struct obj *o)
/* Debug-Infos fuer eine Variable ausgeben. */
{
struct Var *v=o->v; int td;
if(!*v->identifier) return;
td=debug_type(f,v->vtyp);
if(ISFUNC(td)) return;
if(o->flags&REG){
emit(f,"\t.stabs\t\"%s:r%d\",0x40,0,0,%d\n",v->identifier,td,o->reg-1);
return;
}
if(v->storage_class==AUTO||v->storage_class==REGISTER){
long of=zm2l(v->offset);
if(!zmleq(l2zm(0L),v->offset)){
of=-of-zm2l(maxalign)+framesize;
emit(f,"#\toffset %ld:\n",of);
emit(f,"\t.stabs\t\"%s:p%d\",0x80,0,0,%ld\n",v->identifier,td,of-framesize);
}else{
of+=frameoffset;
emit(f,"#\toffset %ld:\n",of);
emit(f,"\t.stabs\t\"%s:%d\",0x80,0,0,%ld\n",v->identifier,td,of-framesize);
}
return;
}
ierror(td);
}
static void debug_IC(FILE *f,struct IC *p)
/* Debug-Infos. Wird fuer jedes IC aufgerufen. */
{
static int lastline;int lab;
printf("%d",p->line);pric2(stdout,p);
if(!p->prev)
emit(f,"%s%d:\n",labprefix,debug_blabel);
/* if(p->q1.flags&VAR) debug_var(f,&p->q1); */
/* if(p->q2.flags&VAR) debug_var(f,&p->q2); */
/* if(p->z.flags&VAR) debug_var(f,&p->z); */
if(p->line&&p->line!=lastline){
lab=++label;lastline=p->line;
emit(f,"%s%d:\n",labprefix,lab);
emit(f,"\t.stabn\t68,0,%d,%s%d\n",lastline,labprefix,lab);
}
if(!p->next) emit(f,"%s%d:\n",labprefix,debug_elabel);
}
static void debug_cleanup(FILE *f)
/* Debug-Infos. Wird in cleanup_cg aufgerufen. */
{
}
/****************************************/
/* End of private data and functions. */
/****************************************/
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(8L);
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<=32;i++) {regsize[i]=l2zm(8L);regtype[i]=&ltyp;}
for(i=33;i<=64;i++) {regsize[i]=l2zm(8L);regtype[i]=&ltyp;}
/* Use multiple ccs. */
multiple_ccs=0; /* not yet */
/* 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]=zmsub(l2zm(-2147483647L),l2zm(1L));
t_min[LLONG]=zmlshift(l2zm(1L),l2zm(63L));
t_min[LONG]=t_min[LLONG];
t_min[MAXINT]=t_min(LLONG);
t_max[CHAR]=ul2zum(127L);
t_max[SHORT]=ul2zum(32767UL);
t_max[INT]=ul2zum(2147483647UL);
t_max[LLONG]=zumrshift(zumkompl(ul2zum(0UL)),ul2zum(1UL));
t_max[LONG]=t_max[LLONG];
t_max[MAXINT]=t_max(LLONG);
tu_max[CHAR]=ul2zum(255UL);
tu_max[SHORT]=ul2zum(65535UL);
tu_max[INT]=ul2zum(4294967295UL);
tu_max[LLONG]=zumkompl(ul2zum(0UL));
tu_max[LONG]=tu_max[LLONG];
tu_max[MAXINT]=t_max(UNSIGNED|LLONG);
/* Reserve a few registers for use by the code-generator. */
/* This is not optimal but simple. */
regsa[t1]=regsa[t2]=regsa[t3]=regsa[t4]=regsa[t5]=1;
regsa[f1]=regsa[f2]=regsa[f3]=1;
regsa[sp]=regsa[gp]=regsa[sd]=1;
regsa[lr]=regsa[r31]=regsa[f31]=1;
regscratch[t1]=regscratch[t2]=regscratch[t3]=regscratch[t4]=regscratch[t5]=0;
regscratch[f1]=regscratch[f2]=regscratch[f3]=0;
regscratch[sp]=regscratch[gp]=regscratch[sd]=0;
regscratch[lr]=regscratch[r31]=regscratch[f31]=0;
/* reserve at - noch aendern */
/* regsa[29]=1;regscratch[29]=0; */
/* Debug stabs? */
stabs=(g_flags[5]&USEDFLAG);
target_macros=marray;
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. */
/* A pointer MUST be returned in a register. The code-generator */
/* has to simulate a pseudo register if necessary. */
{
if(ISFLOAT(t->flags)) return 33;
if(ISSTRUCT(t->flags)||ISUNION(t->flags)) return 0;
if(zmleq(szof(t),l2zm(8L)))
return 1;
else
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. */
{
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. */
{
if(r==0) return 0;
if(t==0) return 0;
if(ISFLOAT(t)){
if(r>=33&&r<=64)
return 1;
else
return 0;
}
if(ISSCALAR(t)&&r>=1&&r<=32) return 1;
return 0;
}
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)&&!(p->q2.flags&KONST))
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. */
/* On the PowerPC cpu pointers and 32bit */
/* integers have the same representation and can use */
/* the same registers. */
{
int op=o&NQ,tp=t&NQ;
if((op==LONG||op==LLONG||op==POINTER)&&(tp==LONG||tp==LLONG||tp==POINTER)) return 0;
if((op==DOUBLE||op==LDOUBLE)&&(tp==DOUBLE||tp==LDOUBLE)) 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. */
{
title(f);
if(newobj){
size=zmmult(zmdiv(zmadd(size,l2zm(7L)),l2zm(8L)),l2zm(8L));
emitzm(f,size);
}else{
emit(f,"\t.zero\t");
emitzm(f,size);
}
emit(f,"\n");
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. */
{
title(f);
if(zm2l(align)>1)
emit(f,"\t.align\t3\n");
}
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;
title(f);
if(v->clist) constflag=is_const(v->vtyp);
if(v->storage_class==STATIC){
if(ISFUNC(v->vtyp->flags)) return;
if(v->clist&&(!constflag||(g_flags[2]&USEDFLAG))&&section!=DATA){emit(f,dataname);if(f) section=DATA;}
if(v->clist&&constflag&&!(g_flags[2]&USEDFLAG)&&section!=CODE){emit(f,codename);if(f) section=CODE;}
if(!v->clist&&section!=BSS){emit(f,bssname);if(f) section=BSS;}
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(section!=BSS)
emit(f,"\t.align\t3\n%s%ld:\n",labprefix,zm2l(v->offset));
else{
emit(f,"\t.lcomm\t%s%ld,",labprefix,zm2l(v->offset));
newobj=1;
}
}
if(v->storage_class==EXTERN){
emit(f,"\t.global\t%s%s\n",idprefix,v->identifier);
if(v->flags&(DEFINED|TENTATIVE)){
if(v->clist&&(!constflag||(g_flags[2]&USEDFLAG))&&section!=DATA){emit(f,dataname);if(f) section=DATA;}
if(v->clist&&constflag&&!(g_flags[2]&USEDFLAG)&&section!=CODE){emit(f,codename);if(f) section=CODE;}
if(!v->clist&&section!=BSS){emit(f,bssname);if(f) section=BSS;}
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)));
if(section!=BSS)
emit(f,"\t.align\t3\n%s%s:\n",idprefix,v->identifier);
else{
emit(f,"\t.comm\t%s%s,",idprefix,v->identifier);
newobj=1;
}
}
}
}
void gen_dc(FILE *f,int t,struct const_list *p)
/* This function has to create static storage */
/* initialized with const-list p. */
{
title(f);
if(ISPOINTER(t)) t=UNSIGNED|LONG;
emit(f,"\t.%s\t",dct[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)!=FLOAT){
emit(f,",0x%02x%02x%02x%02x",ip[7],ip[6],ip[5],ip[4]);
}
}else{
emitval(f,&p->val,t&NU);
}
}else{
if(p->tree->o.am) ierror(9);
probj2(f,&p->tree->o,t&NU);
}
emit(f,"\n");newobj=0;
}
/* 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)
/* The main code-generation. */
{
int addbuf,c,t,cmpreg,cmpflag,wasnoreg,i,varargs=0,fixargs;struct IC *m;
long pushed,maxpushed;
if(DEBUG&1) printf("gen_code()\n");
if(stabs) debug_init(f,v);
for(c=1;c<=MAXR;c++){regs[c]=regsa[c];st[c]=ESGN;}
/* We do a pass over the code to retrieve some info and prepare certain optimizations */
addbuf=0;maxpushed=0;
title(f);
for(m=p;m;m=m->next){
c=m->code;t=m->typf&NU;
if(c==ALLOCREG) {regs[m->q1.reg]=1;continue;}
if(c==FREEREG) {regs[m->q1.reg]=0;continue;}
if(c==COMPARE&&(m->q2.flags&KONST)){
eval_const(&m->q2.val,t);
if(zmeqto(vmax,l2zm(0L))&&zumeqto(vumax,ul2zum(0UL))&&zldeqto(vldouble,d2zld(0.0))){
m->q2.flags=0;m->code=c=TEST;
}
}
if(ISINT(t)&&(m->q2.flags&KONST)&&(c==MULT||((c==DIV||c==MOD)&&(t&UNSIGNED)))){
eval_const(&m->q2.val,t);
i=pof2(vumax);
if(i){
if(c==MOD){
vmax=zmsub(vmax,l2zm(1L));
m->code=AND;
}else{
vmax=l2zm(i-1);
if(c==DIV) m->code=RSHIFT; else m->code=LSHIFT;
}
c=m->code;
gval.vmax=vmax;
eval_const(&gval,MAXINT);
if(c==AND){
insert_const(&m->q2.val,t&NU);
}else{
insert_const(&m->q2.val,INT);
p->typf2=INT;
}
}
}
/* Need one stack slot for transfrring between integer and floating-point registers. */
t&=NQ;
if(c==CONVERT&&addbuf<8&&((ISFLOAT(t)&&!ISFLOAT(m->typf2))||(!ISFLOAT(t)&&ISFLOAT(p->typf2)))) addbuf=8;
/* May need one stack slot for inline memcpy. */
/* if((c==ASSIGN||c==PUSH)&&t>=POINTER&&addbuf<8) addbuf=8; */
/* Need additional stack slots for passing function arguments. */
if(c==CALL&&maxpushed<zm2l(m->q2.val.vmax)) maxpushed=zm2l(m->q2.val.vmax);
if(c==CALL&&(m->q1.flags&VAR)&&!strcmp(m->q1.v->identifier,"__va_start")) varargs=1;
/* Need up to 4 stack slots for calling div/mod-functions. */
if((c==DIV||c==MOD)&&ISINT(t)&&addbuf<32){
if(regs[25]||regs[26]||regs[28]||regs[29]) addbuf=32;
}
}
/* Noch nicht ok. */
if(varargs){
fixargs=0;
for(i=0;i<v->vtyp->exact->count;i++){
c=(*v->vtyp->exact->sl)[i].styp->flags;
if(ISPOINTER(c)) fixargs++;
}
if(fixargs<6) addbuf+=(6-fixargs)*16;
}
function_top(f,v,zm2l(offset+addbuf),maxpushed);
if(varargs){
for(i=fixargs+1;i<=6;i++){
emit(f,"\tstq\t%s,%ld(%s)\n",regnames[16+i],framesize-(7-i)*16,regnames[sp]);
emit(f,"\tstt\t%s,%ld(%s)\n",regnames[48+i],framesize-(7-i)*16+8,regnames[sp]);
}
}
pushed=0;
for(;p;pr(f,p),p=p->next){
if(DEBUG) pric2(stdout,p);
if(debug_info){
if(stabs)
debug_IC(f,p);
else
dwarf2_line_info(f,p);
}
c=p->code;t=p->typf;
if(c==NOP) continue;
if(c==ALLOCREG) {regs[p->q1.reg]=1;continue;}
if(c==FREEREG) {regs[p->q1.reg]=0;continue;}
if(c==LABEL||(c>=BEQ&&c<=BRA)){
int i;
for(i=1;i<=32;i++)
if(regs[i]&&!regsa[i]) extend(f,i);
}
if(c==LABEL) {emit(f,"%s%d:\n",labprefix,t);continue;}
if(c==BRA) {emit(f,"\tbr\t%s%d\n",labprefix,t);continue;}
if(c>=BEQ&&c<BRA){
if(cmpflag){
emit(f,"\t%sb%s\t%s,%s%d\n",cmpreg<=32?"":"f",cmpflag<0?"eq":"ne",regnames[cmpreg],labprefix,t);
}else{
emit(f,"\t%sb%s\t%s,%s%d\n",cmpreg<=32?"":"f",ccs[c-BEQ],regnames[cmpreg],labprefix,t);
}
continue;
}
if(c==MOVETOREG){
load_reg(f,p->z.reg,&p->q1,p->z.reg<=32?LONG:DOUBLE,0);
p->z.flags=0;
continue;
}
if(c==MOVEFROMREG){
store_reg(f,p->q1.reg,&p->z,p->q1.reg<=32?LONG:DOUBLE);
p->z.flags=0;
continue;
}
if(ISPOINTER(t)) t=((t&~NU)|UNSIGNED|LONG);
if((c==ASSIGN||c==PUSH)&&(!ISSCALAR(t)||((t&NQ)==CHAR&&zm2l(p->q2.val.vmax)!=1))){
zmax size; struct obj loops;
int salign,dalign,cl,a1,a2,mr,ms;
size=p->q2.val.vmax;
salign=balign(&p->q1);
if(c==PUSH) dalign=0; else dalign=balign(&p->z);
if(salign>=0&&dalign>=0&&(salign&3)==(dalign&3)){
a1=t1; a2=t2;
}else{
if(!helpl) helpl=++label;
cl=0;mr=0;ms=0;
for(i=1;i<=32;i++){
if(i!=17&&i!=18&&i!=19&&regused[i]&&!regscratch[i]&&!regs[i]) mr=i;
if(regs[i]&&regscratch[i]) ms=1;
}
if(mr==0) mr=t3;
if(regs[17]||regs[18]||regs[19]||function_calls==0) ms=1;
if(ms) emit(f,"\tlda\t%s,%s%d\n",regnames[mr],labprefix,helpl);
if(regs[17]) emit(f,"\tstq\t%s,%d(%s)\n",regnames[17],8*cl++,regnames[mr]);
if(regs[18]) emit(f,"\tstq\t%s,%d(%s)\n",regnames[18],8*cl++,regnames[mr]);
if(regs[19]) emit(f,"\tstq\t%s,%d(%s)\n",regnames[19],8*cl++,regnames[mr]);
a1=18;a2=17;
if(p->z.am&&p->z.am->base==18) ierror(0);
if(!p->z.am&&(p->z.flags&REG)&&p->z.reg==18) ierror(0);
}
if(p->q1.flags&DREFOBJ){
p->q1.flags&=~DREFOBJ;
load_reg(f,a1,&p->q1,POINTER,a1);
p->q1.flags|=DREFOBJ;
}else{
load_address(f,a1,&p->q1,POINTER);
}
if(p->z.flags&DREFOBJ){
p->z.flags&=~DREFOBJ;
load_reg(f,a2,&p->z,POINTER,a2);
p->z.flags|=DREFOBJ;
}else{
if(c==PUSH){
emit(f,"\tlda\t%s,%ld(%s)\n",regnames[a2],pushed,regnames[sp]);
pushed+=zm2l(p->q2.val.vmax);
}else{
load_address(f,a2,&p->z,POINTER);
}
}
if(salign>=0&&dalign>=0&&(salign&3)==(dalign&3)){
int do64,m,s;
if((salign&7)==(dalign&7))
{do64=1;m=8;s='q';}
else
{do64=0;m=4;s='l';salign&=3;}
if(salign&7){
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t3],-salign,regnames[t1]);
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t4],-salign,regnames[t2]);
cl=(1<<salign)-1;
if(!zmleq(l2zm(m-salign),size)) cl+=((1<<(m-salign-zm2l(size)))-1)<<(salign+zm2l(size));
emit(f,"\tzap\t%s,%d,%s\n",regnames[t3],cl,regnames[t3]);
emit(f,"\tzapnot\t%s,%d,%s\n",regnames[t4],cl,regnames[t4]);
emit(f,"\tbis\t%s,%s,%s\n",regnames[t3],regnames[t4],regnames[t3]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t3],-salign,regnames[t2]);
size=zmsub(size,zm2l(m-salign));
salign=m-salign;
}else
salign=0;
loops.val.vmax=zmdiv(size,l2zm(8*m));
if(zmleq(l2zm(2L),loops.val.vmax)){
loops.flags=KONST;
loops.am=0;
load_reg(f,t3,&loops,LONG,t3);
cl=++label;
emit(f,"\t.align\t4\n%s%d:\n",labprefix,cl);
}
if(!zmeqto(loops.val.vmax,l2zm(0))){
for(i=0;i<8;i+=2){
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t1]);
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t5],salign+i*m+m,regnames[t1]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t2]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t5],salign+i*m+m,regnames[t2]);
}
}
if(zmleq(l2zm(2L),loops.val.vmax)){
emit(f,"\taddq\t%s,%d,%s\n",regnames[t1],8*m,regnames[t1]);
emit(f,"\taddq\t%s,%d,%s\n",regnames[t2],8*m,regnames[t2]);
emit(f,"\tsubq\t%s,1,%s\n",regnames[t3],regnames[t3]);
emit(f,"\tbne\t%s,%s%d\n",regnames[t3],labprefix,cl);
}else{
if(!zmeqto(loops.val.vmax,l2zm(0L)))
salign+=8*m;
}
size=zmand(size,l2zm(8*m-1));
for(i=0;i<(zm2l(size)/m/2)*2;i+=2){
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t1]);
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t5],salign+i*m+m,regnames[t1]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t2]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t5],salign+i*m+m,regnames[t2]);
}
size=zmand(size,l2zm(2*m-1));
if(zm2l(size)>=m){
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t1]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t2]);
size=zmsub(size,l2zm(m));i++;
}
if(zm2l(size)>0){
if(zm2l(size)==4){
emit(f,"\tldl\t%s,%d(%s)\n",regnames[t4],salign+i*m,regnames[t1]);
emit(f,"\tstl\t%s,%d(%s)\n",regnames[t4],salign+i*m,regnames[t2]);
}else{
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t1]);
emit(f,"\tld%c\t%s,%d(%s)\n",s,regnames[t5],salign+i*m,regnames[t2]);
cl=(1<<zm2l(size))-1;
emit(f,"\tzapnot\t%s,%d,%s\n",regnames[t4],cl,regnames[t4]);
emit(f,"\tzap\t%s,%d,%s\n",regnames[t5],cl,regnames[t5]);
emit(f,"\tbis\t%s,%s,%s\n",regnames[t4],regnames[t5],regnames[t4]);
emit(f,"\tst%c\t%s,%d(%s)\n",s,regnames[t4],salign+i*m,regnames[t2]);
}
}
p->z.flags=0; /* to prevent pr() from... */
continue;
}
for(i=1;i<=32;i++){
if(i!=17&&i!=18&&i!=19&&regs[i]&&regscratch[i])
emit(f,"\tstq\t%s,%d(%s)\n",regnames[i],8*cl++,regnames[mr]);
}
if(function_calls==0) emit(f,"\tstq\t%s,%d(%s)\n",regnames[lr],8*cl++,regnames[mr]);
if(cl>helps) helps=cl;
loops.val.vmax=size;
loops.flags=KONST;
loops.am=0;
load_reg(f,19,&loops,LONG,19);
emit(f,"\t.global\t%smemcpy\n",idprefix);
emit(f,"\tjsr\t%s,%smemcpy\n",regnames[lr],idprefix);
emit(f,"\tldgp\t%s,0(%s)\n",regnames[gp],regnames[lr]);
cl=0;
if(ms&&mr==t3) emit(f,"\tlda\t%s,%s%d\n",regnames[mr],labprefix,helpl);
if(regs[17]) emit(f,"\tldq\t%s,%d(%s)\n",regnames[17],8*cl++,regnames[mr]);
if(regs[18]) emit(f,"\tldq\t%s,%d(%s)\n",regnames[18],8*cl++,regnames[mr]);
if(regs[19]) emit(f,"\tldq\t%s,%d(%s)\n",regnames[19],8*cl++,regnames[mr]);
for(i=1;i<=32;i++){
if(i!=17&&i!=18&&i!=19&&regs[i]&&regscratch[i])
emit(f,"\tldq\t%s,%d(%s)\n",regnames[i],8*cl++,regnames[mr]);
}
if(function_calls==0) emit(f,"\tldq\t%s,%d(%s)\n",regnames[lr],8*cl++,regnames[mr]);
p->z.flags=0;
continue;
}
if(isreg(q1)) wasnoreg=1; else wasnoreg=0;
p=do_refs(f,p);
c=p->code;
if(c==CONVERT){
int to;
to=p->typf2&NU;
if(ISPOINTER(to)) to=(UNSIGNED|LONG);
if(ISINT(to)&&ISINT(t)){
if((to&NQ)>=(t&NQ)){
if((t&NQ)<INT){
if(t&UNSIGNED){
emit(f,"\tzapnot\t%s,%d,%s\n",regnames[q1reg],(t&NQ)==CHAR?1:3,regnames[zreg]);
st[zreg]=EUNS;continue;
}else{
emit(f,"\tsext%c\t%s,%s\n",(t&NQ)==CHAR?'b':'w',regnames[q1reg],regnames[zreg]);
st[zreg]=ESGN;continue;
}
}
zreg=q1reg;
}else if((t&NQ)==LONG||(t&NQ)==LLONG){
if(to&UNSIGNED)
uextend(f,q1reg);
else
extend(f,q1reg);
st[q1reg]=ESGN;
zreg=q1reg;
}else{
if((to&UNSIGNED)==(t&UNSIGNED)){
zreg=q1reg;
}else{
if(to&UNSIGNED){
emit(f,"\tzapnot\t%s,%d,%s\n",regnames[q1reg],(t&NQ)==CHAR?1:3,regnames[zreg]);
st[zreg]=EUNS;continue;
}else{
emit(f,"\tsext%c\t%s,%s\n",(t&NQ)==CHAR?'b':'w',regnames[q1reg],regnames[zreg]);
st[zreg]=ESGN;continue;
}
}
}
continue;
}
if(ISFLOAT(to)){
st[zreg]=ESGN;
if(ISFLOAT(t)){
emit(f,"\tcvt%c%c\t%s,%s\n",x_t[to&NQ],x_t[t&NQ],regnames[q1reg],regnames[zreg]);
continue;
}
/* if(t&UNSIGNED) ierror(0); */
emit(f,"\tcvttqc\t%s,%s\n",regnames[q1reg],regnames[f3]);
/* emit(f,"\tftoit\t%s,%s\n",regnames[q1reg],regnames[zreg]); */
/* emit(f,"\t.long\t%ld\n",(0x1cl<<26)+(0x70l<<5)+(31l<<16)+((long)(q1reg-33)<<21)+zreg-1); */
emit(f,"\tstt\t%s,%ld(%s)\n",regnames[f3],framesize-addbuf,regnames[sp]);
emit(f,"\tldq\t%s,%ld(%s)\n",regnames[zreg],framesize-addbuf,regnames[sp]);
st[zreg]=ESGN;
continue;
}
if(ISFLOAT(t)){
/* if(to&UNSIGNED) ierror(0); */
/* emit(f,"\titoft\t%s,%s\n",regnames[q1reg],regnames[zreg]); */
emit(f,"\tstq\t%s,%ld(%s)\n",regnames[q1reg],framesize-addbuf,regnames[sp]);
emit(f,"\tldt\t%s,%ld(%s)\n",regnames[zreg],framesize-addbuf,regnames[sp]);
emit(f,"\tcvtq%c\t%s,%s\n",x_t[t&15],regnames[zreg],regnames[zreg]);
continue;
}
}
if(c==KOMPLEMENT){
emit(f,"\tornot\t%s,%s,%s\n",regnames[r31],regnames[q1reg],regnames[zreg]);
if((t&NQ)==INT) st[zreg]=0; else st[zreg]=ESGN;
continue;
}
if(c==SETRETURN){
if(p->z.reg){
if(zreg==0) load_reg(f,p->z.reg,&p->q1,t,t3);
extend(f,p->z.reg);
}else
ierror(0);
continue;
}
if(c==GETRETURN){
if(p->q1.reg){
zreg=p->q1.reg;
st[zreg]=ESGN;
}else
p->z.flags=0;
continue;
}
if(c==CALL){
int reg;
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);
pushed-=zm2l(p->q2.val.vmax);
continue;
}
if((p->q1.flags&VAR)&&p->q1.v->storage_class==EXTERN&&!(g_flags[6]&USEDFLAG)){
char *s=p->q1.v->identifier;
if(!strcmp("abs",s)||!strcmp("labs",s)){
emit(f,"\tsubq\t%s,%s,%s\n",regnames[r31],regnames[17],regnames[1]);
emit(f,"\tcmovge\t%s,%s,%s\n",regnames[17],regnames[17],regnames[1]);
continue;
}
if(!strcmp("fabs",s)){
emit(f,"\tfabs\t%s,%s\n",regnames[17],regnames[1]);
continue;
}
if(!strcmp("__va_fixargs",s)){
emit(f,"\tlda\t%s,%d(%s)\n",regnames[1],fixargs,regnames[r31]);
continue;
}
if(!strcmp("__va_start",s)){
emit(f,"\tlda\t%s,%ld(%s)\n",regnames[1],framesize-(6-fixargs)*16,regnames[sp]);
continue;
}
}
for(reg=17;reg<=22;reg++)
extend(f,reg);
if(q1reg){
if(q1reg!=vp) move_reg(f,q1reg,vp);
emit(f,"\tjsr\t%s,(%s),0\n",regnames[lr],regnames[vp]);
}else{
emit(f,"\tjsr\t%s,",regnames[lr]);
probj2(f,&p->q1,t);emit(f,"\n");
}
emit(f,"\tldgp\t%s,0(%s)\n",regnames[gp],regnames[lr]);
pushed-=zm2l(p->q2.val.vmax);
continue;
}
if(c==ASSIGN||c==PUSH){
if(t==0) ierror(0);
if(q1reg){
if(c==PUSH){
extend(f,q1reg);
if((t&NQ)==FLOAT){
emit(f,"\tcvtst\t%s,%s\n",regnames[q1reg],regnames[f1]);
q1reg=f1;
emit(f,"\tsts\t%s,%ld(%s)\n",regnames[q1reg],pushed,regnames[sp]);
}else{
emit(f,"\tst%c\t%s,%ld(%s)\n",q1reg<=32?'q':'t',regnames[q1reg],pushed,regnames[sp]);
}
pushed+=8;
continue;
}
if(c==ASSIGN) zreg=q1reg;
continue;
}else ierror(0);
}
if(c==ADDRESS){
load_address(f,zreg,&p->q1,POINTER);
continue;
}
if(c==MINUS){
if(ISINT(t))
emit(f,"\tsub%c\t%s,%s,%s\n",x_t[t&NQ],regnames[r31],regnames[q1reg],regnames[zreg]);
else
emit(f,"\tsub%c\t%s,%s,%s\n",x_t[t&NQ],regnames[f31],regnames[q1reg],regnames[zreg]);
st[zreg]=ESGN;
continue;
}
if(c==TEST){
if(st[q1reg]==0) extend(f,q1reg);
cmpreg=q1reg;
cmpflag=0;
continue;
}
if(c==COMPARE){
struct IC *br=p->next;
while(1){
if(br->code>=BEQ&&br->code<BRA) break;
if(br->code!=FREEREG) ierror(0);
br=br->next;
}
if(ISFLOAT(t)) cmpreg=f3; else cmpreg=t3;
if(br->code==BEQ||br->code==BNE){
if((t&NU)==(UNSIGNED|INT)){
if(st[q1reg]==ESGN) extend(f,q2reg);
else if(st[q2reg]==ESGN) extend(f,q1reg);
else if(st[q1reg]==EUNS) uextend(f,q2reg);
else if(st[q2reg]==EUNS) uextend(f,q1reg);
else {extend(f,q1reg);extend(f,q2reg);}
}
if((t&NU)==INT){extend(f,q1reg);extend(f,q2reg);}
if(ISFLOAT(t)) emit(f,"\tsub%c\t%s,",x_t[t&NQ],regnames[q1reg]);
else emit(f,"\tsub%c\t%s,",x_t[t&NQ],regnames[q1reg]);
probj2(f,&p->q2,t);emit(f,",%s\n",regnames[cmpreg]);
cmpflag=0;st[cmpreg]=ESGN;
}else{
char *s="";
if(t&UNSIGNED) s="u";
if((t&NU)==(UNSIGNED|INT)){uextend(f,q1reg);uextend(f,q2reg);}
if((t&NU)==INT){extend(f,q1reg);extend(f,q2reg);}
if(ISFLOAT(t)) s="t";
if(br->code==BLT||br->code==BGE){
emit(f,"\tcmp%slt\t%s,",s,regnames[q1reg]);
probj2(f,&p->q2,t);emit(f,",%s\n",regnames[cmpreg]);
if(br->code==BGE) cmpflag=-1; else cmpflag=1;
}else{
emit(f,"\tcmp%sle\t%s,",s,regnames[q1reg]);
probj2(f,&p->q2,t);emit(f,",%s\n",regnames[cmpreg]);
if(br->code==BGT) cmpflag=-1; else cmpflag=1;
}
}
continue;
}
if(c>=OR&&c<=AND){
emit(f,"\t%s\t%s,",logicals[c-OR],regnames[q1reg]);
probj2(f,&p->q2,t);emit(f,",%s\n",regnames[zreg]);
/* hier ist mehr moeglich */
if((t&NQ)==INT) st[zreg]=0; else st[zreg]=ESGN;
continue;
}
if(c>=LSHIFT&&c<=MOD){
int xt;
if(c==LSHIFT&&(p->q2.flags&KONST)){
eval_const(&p->q2.val,t);
if(zumeqto(vumax,ul2zum(1UL))){
emit(f,"\tadd%c\t%s,%s,%s\n",x_t[t&NQ],regnames[q1reg],regnames[q1reg],regnames[zreg]);
st[zreg]=ESGN;continue;
}
if(zumeqto(vumax,ul2zum(2UL))){
emit(f,"\ts4add%c\t%s,0,%s\n",x_t[t&NQ],regnames[q1reg],regnames[zreg]);
st[zreg]=ESGN;continue;
}
if(zumeqto(vumax,ul2zum(3UL))){
emit(f,"\ts8add%c\t%s,0,%s\n",x_t[t&NQ],regnames[q1reg],regnames[zreg]);
st[zreg]=ESGN;continue;
}
}
if(c==RSHIFT||c==LSHIFT){
if(c==RSHIFT){
if(t&UNSIGNED){
if((t&NQ)<LONG) uextend(f,q1reg);
emit(f,"\tsrl\t");
}else{
extend(f,q1reg);
emit(f,"\tsra\t");
}
st[zreg]=st[q1reg];
}else{
emit(f,"\tsll\t");
if((t&NQ)<=INT) st[zreg]=0; else st[zreg]=ESGN;
}
emit(f,"%s,",regnames[q1reg]);
probj2(f,&p->q2,t);emit(f,",%s\n",regnames[zreg]);
continue;
}
if((c==DIV||c==MOD)&&ISINT(t)){
/* Linux-Routinen aufrufen. q1=$24 q2=$25 z=$27 $28 scratch */
if(!q1reg) ierror(0);
if(q1reg!=25){
if(regs[25]) emit(f,"\tstq\t%s,%ld(%s)\n",regnames[25],framesize-addbuf,regnames[sp]);
move_reg(f,q1reg,25);
}
if(q2reg!=26&&regs[26]) emit(f,"\tstq\t%s,%ld(%s)\n",regnames[26],framesize-addbuf+8,regnames[sp]);
if(q2reg==25)
emit(f,"\tldq\t%s,%ld(%s)\n",regnames[26],framesize-addbuf,regnames[sp]);
else
load_reg(f,26,&p->q2,t,26);
if(zreg!=28&&regs[28]) emit(f,"\tstq\t%s,%ld(%s)\n",regnames[28],framesize-addbuf+16,regnames[sp]);
if(regs[29]) emit(f,"\tstq\t%s,%ld(%s)\n",regnames[29],framesize-addbuf+24,regnames[sp]);
emit(f,"\t%sq%s\t%s,%s,%s\n",arithmetics[c-LSHIFT],(t&UNSIGNED)?"u":"",regnames[25],regnames[26],regnames[28]);
if(zreg!=28) move_reg(f,28,zreg);
if(q1reg!=25&&regs[25]) emit(f,"\tldq\t%s,%ld(%s)\n",regnames[25],framesize-addbuf,regnames[sp]);
if(q2reg!=26&&regs[26]) emit(f,"\tldq\t%s,%ld(%s)\n",regnames[26],framesize-addbuf+8,regnames[sp]);
if(zreg!=28&&regs[28]) emit(f,"\tldq\t%s,%ld(%s)\n",regnames[28],framesize-addbuf+16,regnames[sp]);
if(regs[29]) emit(f,"\tldq\t%s,%ld(%s)\n",regnames[29],framesize-addbuf+24,regnames[sp]);
/* Was fuer st[zreg]? */
continue;
}
xt=x_t[t&NQ];
if((t&NQ)<INT) xt='l';
emit(f,"\t%s%c\t%s,",arithmetics[c-LSHIFT],xt,regnames[q1reg]);
probj2(f,&p->q2,t);emit(f,",%s\n",regnames[zreg]);
st[zreg]=ESGN;
continue;
}
if(c==SUBPFP){
emit(f,"\tsubq\t%s,%s,%s\n",regnames[q1reg],regnames[q2reg],regnames[zreg]);
st[zreg]=ESGN;continue;
}
if(c==ADDI2P||c==SUBIFP){
if(t&UNSIGNED){
if((t&NQ)<LONG) uextend(f,q2reg);
}else
extend(f,q2reg);
if(c==ADDI2P) emit(f,"\taddq\t%s,",regnames[q1reg]);
else emit(f,"\tsubq\t%s,",regnames[q1reg]);
probj2(f,&p->q2,t);
emit(f,",%s\n",regnames[zreg]);
st[zreg]=ESGN;continue;
}
ierror(0);
}
function_bottom(f,v,zm2l(offset+addbuf),maxpushed);
if(debug_info){
if(stabs){
debug_exit(f,v);
}else{
emit(f,"%s%d:\n",labprefix,++label);
dwarf2_function(f,v,label);
if(f) section=-1;
}
}
}
int shortcut(int code,int typ)
{
return 0;
}
int reg_parm(struct reg_handle *m, struct Typ *t,int vararg,struct Typ *fkt)
{
int f;
f=t->flags&NQ;
if(ISINT(f)||ISPOINTER(f)){
if(m->nextr>=6) return 0;
return 17+m->nextr++;
}
if(ISFLOAT(f)){
if(m->nextr>=6) return 0;
return 49+m->nextr++;
}
return 0;
}
void cleanup_cg(FILE *f)
{
struct fpconstlist *p;
unsigned char *ip;
title(f);
if(f&&stabs) debug_cleanup(f);
while(p=firstfpc){
if(f){
int t=p->typ&NQ;
if(section!=CODE){emit(f,codename);if(f) section=CODE;}
emit(f,"\t.align\t3\n%s%d:\n\t",labprefix,p->label);
if(ISFLOAT(t)){
ip=(unsigned char *)&p->val.vdouble;
emit(f,"\t.long\t0x%02x%02x%02x%02x",ip[3],ip[2],ip[1],ip[0]);
if((p->typ&NQ)!=FLOAT){
emit(f,",0x%02x%02x%02x%02x",ip[7],ip[6],ip[5],ip[4]);
}
}else{
emit(f,"\t.quad\t");
emitval(f,&p->val,p->typ);
}
emit(f,"\n");
}
firstfpc=p->next;
free(p);
}
if(f&&helps) emit(f,"\t.lcomm\t%s%d,%d\n",labprefix,helpl,helps*8);
}
void init_db(FILE *f)
{
if(!stabs){
dwarf2_setup(sizetab[POINTER],".byte",".2byte",".4byte",".8byte",labprefix,idprefix,".section");
dwarf2_print_comp_unit_header(f);
}
}
void cleanup_db(FILE *f)
{
if(!stabs&&f)
dwarf2_cleanup(f);
if(f) section=-1;
}