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System: Rewrite EXE override/loading

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Relies on POST=7 as a kernel initialization indicator, instead of
patching the BIOS.

Fixes EXE loading with OpenBIOS and PS2 BIOS, and fast boot getting
baked into save states.
This commit is contained in:
Stenzek
2024-07-28 16:16:05 +10:00
parent 7b99fcbbf3
commit 6fe0c986fa
13 changed files with 327 additions and 322 deletions
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5
src/core/bios.h
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@ -70,12 +70,9 @@ std::optional<Image> LoadImageFromFile(const char* filename, Error* error);
bool IsValidBIOSForRegion(ConsoleRegion console_region, ConsoleRegion bios_region);
void PatchBIOS(u8* image, u32 image_size, u32 address, u32 value, u32 mask = UINT32_C(0xFFFFFFFF));
bool PatchBIOSFastBoot(u8* image, u32 image_size);
bool PatchBIOSForEXE(u8* image, u32 image_size, u32 r_pc, u32 r_gp, u32 r_sp, u32 r_fp);
bool IsValidPSExeHeader(const PSEXEHeader& header, u32 file_size);
bool IsValidPSExeHeader(const PSEXEHeader& header, size_t file_size);
DiscRegion GetPSExeDiscRegion(const PSEXEHeader& header);
/// Loads the BIOS image for the specified region.