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new rsval() helper for signed Refs

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The .val field is signed in RSlot.
Add a new dedicated function to
fetch it as a signed int.
This commit is contained in:
Quentin Carbonneaux 2022-12-12 17:36:15 +01:00
parent 2ec355df6a
commit c0f25aeae3
5 changed files with 31 additions and 23 deletions
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12
arm64/emit.c
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@ -138,9 +138,11 @@ rname(int r, int k)
}
static uint64_t
slot(int s, E *e)
slot(Ref r, E *e)
{
s = ((int32_t)s << 3) >> 3;
int s;
s = rsval(r);
if (s == -1)
return 16 + e->frame;
if (s < 0) {
@ -234,7 +236,7 @@ emitf(char *s, Ins *i, E *e)
fprintf(e->f, "[%s]", rname(r.val, Kl));
break;
case RSlot:
fprintf(e->f, "[x29, %"PRIu64"]", slot(r.val, e));
fprintf(e->f, "[x29, %"PRIu64"]", slot(r, e));
break;
}
break;
@ -333,7 +335,7 @@ fixarg(Ref *pr, int sz, E *e)
r = *pr;
if (rtype(r) == RSlot) {
s = slot(r.val, e);
s = slot(r, e);
if (s > sz * 4095u) {
i = &(Ins){Oaddr, Kl, TMP(IP0), {r}};
emitins(i, e);
@ -410,7 +412,7 @@ emitins(Ins *i, E *e)
case Oaddr:
assert(rtype(i->arg[0]) == RSlot);
rn = rname(i->to.val, Kl);
s = slot(i->arg[0].val, e);
s = slot(i->arg[0], e);
if (s <= 4095)
fprintf(e->f, "\tadd\t%s, x29, #%"PRIu64"\n", rn, s);
else if (s <= 65535)