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add back dkr math routines

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LittleCube 2025-06-24 18:03:35 -04:00
parent 94b30d7061
commit 88e48bdcff
1 changed files with 32 additions and 0 deletions
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32
librecomp/src/math_routines.cpp
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@ -80,3 +80,35 @@ extern "C" void __ull_to_f_recomp(uint8_t * rdram, recomp_context * ctx) {
ctx->f0.fl = ret;
}
extern "C" void __ull_rshift_recomp(uint8_t * rdram, recomp_context * ctx) {Add commentMore actions
uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
uint64_t ret = a >> b;
ctx->r2 = (int32_t)(ret >> 32);
ctx->r3 = (int32_t)(ret >> 0);
}
extern "C" void __ll_to_f_recomp(uint8_t * rdram, recomp_context * ctx) {
int64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
float ret = (float)a;
ctx->f0.fl = ret;
}
extern "C" void __f_to_ll_recomp(uint8_t * rdram, recomp_context * ctx) {
int64_t ret = (int64_t)ctx->f12.fl;
ctx->r2 = (int32_t)(ret >> 32);
ctx->r3 = (int32_t)(ret >> 0);
}
extern "C" void __ll_lshift_recomp(uint8_t * rdram, recomp_context * ctx) {
uint64_t a = (ctx->r4 << 32) | ((ctx->r5 << 0) & 0xFFFFFFFFu);
uint64_t b = (ctx->r6 << 32) | ((ctx->r7 << 0) & 0xFFFFFFFFu);
uint64_t ret = a << b;
ctx->r2 = (int32_t)(ret >> 32);
ctx->r3 = (int32_t)(ret >> 0);
}