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Fix Tile32 unsigned long value cast constructor

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scawful
2024-01-29 16:11:07 -05:00
parent 319665621c
commit 0a388e60b4
5 changed files with 81 additions and 69 deletions
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18
src/app/core/common.cc
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@@ -43,8 +43,22 @@ uint32_t SnesToPc(uint32_t addr) {
}
uint32_t PcToSnes(uint32_t addr) {
if (addr >= 0x400000) return -1;
addr = ((addr << 1) & 0x7F0000) | (addr & 0x7FFF) | 0x8000;
// Impl1
// if (addr >= 0x400000) return -1;
// addr = ((addr << 1) & 0x7F0000) | (addr & 0x7FFF) | 0x8000;
// Impl2
// return (addr & 0x7FFF) | 0x8000 | ((addr & 0x7F8000) << 1);
uint8_t *b = reinterpret_cast<uint8_t *>(&addr);
b[2] = static_cast<uint8_t>(b[2] * 2);
if (b[1] >= 0x80) {
b[2] += 1;
} else {
b[1] += 0x80;
}
return addr;
}

2
src/app/core/common.h
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@@ -266,6 +266,8 @@ void stle16b_i(uint8_t *const p_arr, size_t const p_index,
uint16_t const p_val);
uint16_t ldle16b_i(uint8_t const *const p_arr, size_t const p_index);
uint16_t ldle16b(uint8_t const *const p_arr);
void stle16b(uint8_t *const p_arr, uint16_t const p_val);
void stle32b(uint8_t *const p_arr, uint32_t const p_val);