void
zzzcode(NODE *p, int c)
{
struct attr *ap;
NODE *l;
int pr, lr;
char *ch;
switch (c) {
case 'A': /* swap st0 and st1 if right is evaluated second */
if ((p->n_su & DORIGHT) == 0) {
if (logop(p->n_op))
printf(" fxch\n");
else
printf("r");
}
break;
case 'C': /* remove from stack after subroutine call */
#ifdef GCC_COMPAT
if (attr_find(p->n_left->n_ap, GCC_ATYP_STDCALL))
break;
#endif
pr = p->n_qual;
if (attr_find(p->n_ap, ATTR_I386_FPPOP))
printf(" fstp %%st(0)\n");
if (p->n_op == UCALL)
return; /* XXX remove ZC from UCALL */
if (pr)
printf(" addl $%d, %s\n", pr, rnames[ESP]);
#if defined(os_openbsd)
ap = attr_find(p->n_ap, ATTR_P2STRUCT);
if (p->n_op == STCALL && (ap->iarg(0) == 1 ||
ap->iarg(0) == 2 || ap->iarg(0) == 4 ||
ap->iarg(0) == 8)) {
/* save on stack */
printf("\tmovl %%eax,-%d(%%ebp)\n", stkpos);
printf("\tmovl %%edx,-%d(%%ebp)\n", stkpos+4);
printf("\tleal -%d(%%ebp),%%eax\n", stkpos);
}
#endif
break;
case 'D': /* Long long comparision */
twollcomp(p);
break;
case 'F': /* Structure argument */
starg(p);
break;
case 'G': /* Floating point compare */
fcomp(p);
break;
case 'H': /* assign of longlong between regs */
rmove(DECRA(p->n_right->n_reg, 0),
DECRA(p->n_left->n_reg, 0), LONGLONG);
break;
case 'I': /* float casts */
fcast(p);
break;
case 'J': /* convert unsigned long long to floating point */
ulltofp(p);
break;
case 'K': /* Load longlong reg into another reg */
rmove(regno(p), DECRA(p->n_reg, 0), LONGLONG);
break;
case 'M': /* Output sconv move, if needed */
l = getlr(p, 'L');
/* XXX fixneed: regnum */
pr = DECRA(p->n_reg, 0);
lr = DECRA(l->n_reg, 0);
if ((pr == AL && lr == EAX) || (pr == BL && lr == EBX) ||
(pr == CL && lr == ECX) || (pr == DL && lr == EDX))
;
else
printf(" movb %%%cl,%s\n",
rnames[lr][2], rnames[pr]);
l->n_rval = l->n_reg = p->n_reg; /* XXX - not pretty */
break;
case 'N': /* output extended reg name */
printf("%s", rnames[getlr(p, '1')->n_rval]);
break;
case 'O': /* print out emulated ops */
pr = 16;
if (p->n_op == RS || p->n_op == LS) {
llshft(p);
break;
} else if (p->n_op == MUL) {
printf("\timull %%ecx, %%edx\n");
printf("\timull %%eax, %%esi\n");
printf("\taddl %%edx, %%esi\n");
printf("\tmull %%ecx\n");
printf("\taddl %%esi, %%edx\n");
break;
}
expand(p, INCREG, "\tpushl UR\n\tpushl AR\n");
expand(p, INCREG, "\tpushl UL\n\tpushl AL\n");
if (p->n_op == DIV && p->n_type == ULONGLONG) ch = "udiv";
else if (p->n_op == DIV) ch = "div";
else if (p->n_op == MOD && p->n_type == ULONGLONG) ch = "umod";
else if (p->n_op == MOD) ch = "mod";
else ch = 0, comperr("ZO");
#ifdef ELFABI
printf("\tcall " EXPREFIX "__%sdi3%s\n\taddl $%d,%s\n",
ch, (kflag ? "@PLT" : ""), pr, rnames[ESP]);
#else
printf("\tcall " EXPREFIX "__%sdi3\n\taddl $%d,%s\n",
ch, pr, rnames[ESP]);
#endif
break;
case 'Q': /* emit struct assign */
/*
* Put out some combination of movs{b,w,l}
* esi/edi/ecx are available.
*/
expand(p, INAREG, " leal AL,%edi\n");
ap = attr_find(p->n_ap, ATTR_P2STRUCT);
if (ap->iarg(0) < 32) {
int i = ap->iarg(0) >> 2;
while (i) {
expand(p, INAREG, " movsl\n");
i--;
}
} else {
void
zzzcode(NODE *p, int c)
{
NODE *l;
int pr, lr;
char *ch;
switch (c) {
case 'A': /* swap st0 and st1 if right is evaluated second */
if ((p->n_su & DORIGHT) == 0) {
if (logop(p->n_op))
printf(" fxch\n");
else
printf("r");
}
break;
case 'C': /* remove from stack after subroutine call */
#ifdef notyet
if (p->n_left->n_flags & FSTDCALL)
break;
#endif
pr = p->n_qual;
if (p->n_op == STCALL || p->n_op == USTCALL)
pr += 4;
if (p->n_flags & FFPPOP)
printf(" fstp %%st(0)\n");
if (p->n_op == UCALL)
return; /* XXX remove ZC from UCALL */
if (pr)
printf(" addl $%d, %s\n", pr, rnames[ESP]);
break;
case 'D': /* Long long comparision */
twollcomp(p);
break;
case 'F': /* Structure argument */
if (p->n_stalign != 0) /* already on stack */
starg(p);
break;
case 'G': /* Floating point compare */
fcomp(p);
break;
case 'H': /* assign of longlong between regs */
rmove(DECRA(p->n_right->n_reg, 0),
DECRA(p->n_left->n_reg, 0), LONGLONG);
break;
case 'I': /* float casts */
fcast(p);
break;
case 'J': /* convert unsigned long long to floating point */
ulltofp(p);
break;
case 'K': /* Load longlong reg into another reg */
rmove(regno(p), DECRA(p->n_reg, 0), LONGLONG);
break;
case 'M': /* Output sconv move, if needed */
l = getlr(p, 'L');
/* XXX fixneed: regnum */
pr = DECRA(p->n_reg, 0);
lr = DECRA(l->n_reg, 0);
if ((pr == AL && lr == EAX) || (pr == BL && lr == EBX) ||
(pr == CL && lr == ECX) || (pr == DL && lr == EDX))
;
else
printf(" movb %%%cl,%s\n",
rnames[lr][2], rnames[pr]);
l->n_rval = l->n_reg = p->n_reg; /* XXX - not pretty */
break;
case 'N': /* output extended reg name */
printf("%s", rnames[getlr(p, '1')->n_rval]);
break;
case 'O': /* print out emulated ops */
pr = 16;
if (p->n_op == RS || p->n_op == LS) {
llshft(p);
break;
} else if (p->n_op == MUL) {
printf("\timull %%ecx, %%edx\n");
printf("\timull %%eax, %%esi\n");
printf("\taddl %%edx, %%esi\n");
printf("\tmull %%ecx\n");
printf("\taddl %%esi, %%edx\n");
break;
}
expand(p, INCREG, "\tpushl UR\n\tpushl AR\n");
expand(p, INCREG, "\tpushl UL\n\tpushl AL\n");
if (p->n_op == DIV && p->n_type == ULONGLONG) ch = "udiv";
else if (p->n_op == DIV) ch = "div";
else if (p->n_op == MOD && p->n_type == ULONGLONG) ch = "umod";
else if (p->n_op == MOD) ch = "mod";
else ch = 0, comperr("ZO");
#ifdef ELFABI
printf("\tcall " EXPREFIX "__%sdi3%s\n\taddl $%d,%s\n",
ch, (kflag ? "@PLT" : ""), pr, rnames[ESP]);
#else
printf("\tcall " EXPREFIX "__%sdi3\n\taddl $%d,%s\n",
ch, pr, rnames[ESP]);
#endif
break;
case 'P': /* push hidden argument on stack */
printf("\tleal -%d(%%ebp),", stkpos);
adrput(stdout, getlr(p, '1'));
printf("\n\tpushl ");
adrput(stdout, getlr(p, '1'));
putchar('\n');
break;
case 'Q': /* emit struct assign */
/*
* With <= 16 bytes, put out mov's, otherwise use movsb/w/l.
* esi/edi/ecx are available.
* XXX should not need esi/edi if not rep movsX.
* XXX can save one insn if src ptr in reg.
*/
switch (p->n_stsize) {
case 1:
expand(p, INAREG, " movb (%esi),%cl\n");
expand(p, INAREG, " movb %cl,AL\n");
break;
case 2:
expand(p, INAREG, " movw (%esi),%cx\n");
expand(p, INAREG, " movw %cx,AL\n");
break;
case 4:
expand(p, INAREG, " movl (%esi),%ecx\n");
expand(p, INAREG, " movl %ecx,AL\n");
break;
default:
expand(p, INAREG, " leal AL,%edi\n");
if (p->n_stsize <= 16 && (p->n_stsize & 3) == 0) {
printf(" movl (%%esi),%%ecx\n");
printf(" movl %%ecx,(%%edi)\n");
printf(" movl 4(%%esi),%%ecx\n");
printf(" movl %%ecx,4(%%edi)\n");
if (p->n_stsize > 8) {
printf(" movl 8(%%esi),%%ecx\n");
printf(" movl %%ecx,8(%%edi)\n");
}
if (p->n_stsize == 16) {
printf("\tmovl 12(%%esi),%%ecx\n");
printf("\tmovl %%ecx,12(%%edi)\n");
}
} else {
if (p->n_stsize > 4) {
printf("\tmovl $%d,%%ecx\n",
p->n_stsize >> 2);
printf(" rep movsl\n");
}
if (p->n_stsize & 2)
printf(" movsw\n");
if (p->n_stsize & 1)
printf(" movsb\n");
}
break;
}
break;
case 'S': /* emit eventual move after cast from longlong */
pr = DECRA(p->n_reg, 0);
lr = p->n_left->n_rval;
switch (p->n_type) {
case CHAR:
case UCHAR:
if (rnames[pr][2] == 'l' && rnames[lr][2] == 'x' &&
rnames[pr][1] == rnames[lr][1])
break;
if (rnames[lr][2] == 'x') {
printf("\tmovb %%%cl,%s\n",
rnames[lr][1], rnames[pr]);
break;
}
/* Must go via stack */
expand(p, INAREG, "\tmovl AL,A2\n");
expand(p, INBREG, "\tmovb A2,A1\n");
#ifdef notdef
/* cannot use freetemp() in instruction emission */
s = BITOOR(freetemp(1));
printf("\tmovl %%e%ci,%d(%%ebp)\n", rnames[lr][1], s);
printf("\tmovb %d(%%ebp),%s\n", s, rnames[pr]);
#endif
break;
case SHORT:
case USHORT:
if (rnames[lr][1] == rnames[pr][2] &&
rnames[lr][2] == rnames[pr][3])
break;
printf("\tmovw %%%c%c,%%%s\n",
rnames[lr][1], rnames[lr][2], rnames[pr]+2);
break;
case INT:
case UNSIGNED:
if (rnames[lr][1] == rnames[pr][2] &&
rnames[lr][2] == rnames[pr][3])
break;
printf("\tmovl %%e%c%c,%s\n",
rnames[lr][1], rnames[lr][2], rnames[pr]);
break;
default:
if (rnames[lr][1] == rnames[pr][2] &&
rnames[lr][2] == rnames[pr][3])
break;
comperr("SCONV2 %s->%s", rnames[lr], rnames[pr]);
break;
}
break;
default:
comperr("zzzcode %c", c);
}
void
zzzcode(NODE *p, int c)
{
struct attr *ap;
NODE *l;
int pr, lr;
char *ch;
char sv;
switch (c) {
case 'A': /* swap st0 and st1 if right is evaluated second */
if ((p->n_su & DORIGHT) == 0) {
if (logop(p->n_op))
printf(" fxch\n");
else
printf("r");
}
break;
case 'C': /* remove from stack after subroutine call */
#ifdef notdef
if (p->n_left->n_flags & FSTDCALL)
break;
#endif
pr = p->n_qual;
if (attr_find(p->n_ap, ATTR_I86_FPPOP))
printf(" fstp st(0)\n");
if (p->n_op == UCALL)
return; /* XXX remove ZC from UCALL */
if (pr) {
if (pr == 2)
printf(" inc sp\n inc sp\n");
else
printf(" add sp,#%d\n", pr);
}
break;
case 'D': /* Long comparision */
twollcomp(p);
break;
case 'F': /* Structure argument */
starg(p);
break;
case 'G': /* Floating point compare */
fcomp(p);
break;
case 'H': /* assign of long between regs */
rmove(DECRA(p->n_right->n_reg, 0),
DECRA(p->n_left->n_reg, 0), LONGLONG);
break;
case 'I': /* float casts */
fcast(p);
break;
case 'J': /* convert unsigned long long to floating point */
ulltofp(p);
break;
case 'K': /* Load long reg into another reg */
rmove(regno(p), DECRA(p->n_reg, 0), LONGLONG);
break;
case 'M': /* Output sconv move, if needed */
l = getlr(p, 'L');
/* XXX fixneed: regnum */
pr = DECRA(p->n_reg, 0);
lr = DECRA(l->n_reg, 0);
if ((pr == AL && lr == AX) || (pr == BL && lr == BX) ||
(pr == CL && lr == CX) || (pr == DL && lr == DX))
;
else
printf(" mov %s, %cL\n",
rnames[pr], rnames[lr][1]);
l->n_rval = l->n_reg = p->n_reg; /* XXX - not pretty */
break;
case 'N': /* output extended reg name */
printf("%s", rnames[getlr(p, '1')->n_rval]);
break;
case 'O': /* print out emulated ops */
pr = 8;
sv = 'l';
#if 0
if (p->n_op == RS || p->n_op == LS) {
llshft(p);
break;
}
#endif
if (p->n_op != RS && p->n_op != LS) {
/* For 64bit we will need to push pointers
not u64 */
expand(p, INCREG, "\tpush UR\n\tpush AR\n");
expand(p, INCREG, "\tpush UL\n\tpush AL\n");
} else {
/* AR is a BREG so this goes wrong.. need an AREG
but putting an AREG in the table rule makes the
compiler shit itself - FIXME */
expand(p, INAREG, "\tpush AR\n");
expand(p, INCREG, "\tpush UL\n\tpush AL\n");
pr = 6;
}
if (p->n_type == LONGLONG || p->n_type == ULONGLONG)
sv = 'L';
if (p->n_op == DIV && (p->n_type == ULONG || p->n_type == ULONGLONG))
ch = "udiv";
else if (p->n_op == MUL && (p->n_type == ULONG || p->n_type == ULONGLONG))
ch = "umul";
else if (p->n_op == DIV) ch = "div";
else if (p->n_op == MUL) ch = "mul";
else if (p->n_op == MOD && (p->n_type == ULONG || p->n_type == ULONGLONG))
ch = "umod";
else if (p->n_op == MOD) ch = "mod";
else if (p->n_op == LS) ch = "ls";
else if (p->n_op == RS && (p->n_type == ULONG || p->n_type == ULONGLONG))
ch = "rs";
else if (p->n_op == RS) ch = "urs";
else ch = 0, comperr("ZO");
printf("\tcall " EXPREFIX "__%c%sdi3\n\tadd %s,#%d\n",
sv, ch, rnames[SP], pr);
break;
case 'P': /* typeless right hand */
suppress_type = 1;
break;
case 'Q': /* emit struct assign */
/*
* Put out some combination of movs{b,w}
* si/di/cx are available.
* FIXME: review es: and direction flag implications
*/
expand(p, INAREG, " lea al,di\n");
ap = attr_find(p->n_ap, ATTR_P2STRUCT);
if (ap->iarg(0) < 32) {
int i = ap->iarg(0) >> 1;
while (i) {
expand(p, INAREG, " movsw\n");
i--;
}
} else {