merge readRe & makeRe, reduce its result size to the proper size

previously the 1<<reW was used as the number of bytes to require but it's actually number of bits
This commit is contained in:
dzaima 2024-02-06 14:19:52 +02:00
parent 05ceb45b2f
commit 677b341ad4

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@ -838,20 +838,16 @@ static B readSimple(u8 resCType, u8* ptr) {
}
static u8 const reTyMapC[] = { [3]=t_c8arr, [4]=t_c16arr, [5]=t_c32arr };
static u8 const reTyMapI[] = { [3]=t_i8arr, [4]=t_i16arr, [5]=t_i32arr, [6]=t_f64arr };
static B makeRe(u8 reT, u8 reW/*log*/, u8* src, u32 elW/*bytes*/) {
u8* dst; B r;
usz ia = (elW*8)>>reW;
if (reW) dst = m_tyarrv(&r, 1<<reW, ia, reT=='c'? reTyMapC[reW] : reTyMapI[reW]);
else { u64* d2; r = m_bitarrv(&d2, ia); dst = (u8*) d2; }
memcpy(dst, src, elW);
return r;
}
static B readRe(BQNFFIType* t, u8* ptr) {
static u8 const reTyMapI[] = { [3]=t_i8arr, [4]=t_i16arr, [5]=t_i32arr, [6]=t_f64arr, [0]=t_bitarr };
static B readRe(BQNFFIType* t, u8* src) {
B e = t->a[0].o;
assert(isC32(e) || e.u==ty_voidptr.u);
u8 etw = isC32(e)? sty_w[styG(e)] : sizeof(void*);
return makeRe(t->reType, t->reWidth, ptr, etw);
u8 elW = isC32(e)? sty_w[styG(e)] : sizeof(void*); // bytes
u8 reW = t->reWidth; // log bits
B r;
char* dst = m_tyarrlbv(&r, reW, (elW*8)>>reW, (t->reType=='c'? reTyMapC : reTyMapI)[reW]);
memcpy(dst, src, elW);
return r;
}
static B readAny(B o, u8* ptr) { // doesn't consume