mirror of
https://github.com/RetroDECK/Duckstation.git
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61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
#pragma once
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#include "types.h"
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#include <optional>
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#include <string>
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#include <string_view>
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#include <vector>
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namespace BIOS {
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enum : u32
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{
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BIOS_BASE = 0x1FC00000,
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BIOS_SIZE = 0x80000
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};
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using Image = std::vector<u8>;
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struct Hash
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{
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u8 bytes[16];
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ALWAYS_INLINE bool operator==(const Hash& bh) const { return (std::memcmp(bytes, bh.bytes, sizeof(bytes)) == 0); }
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ALWAYS_INLINE bool operator!=(const Hash& bh) const { return (std::memcmp(bytes, bh.bytes, sizeof(bytes)) != 0); }
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std::string ToString() const;
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};
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#pragma pack(push, 1)
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struct PSEXEHeader
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{
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char id[8]; // 0x000-0x007 PS-X EXE
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char pad1[8]; // 0x008-0x00F
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u32 initial_pc; // 0x010
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u32 initial_gp; // 0x014
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u32 load_address; // 0x018
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u32 file_size; // 0x01C excluding 0x800-byte header
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u32 unk0; // 0x020
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u32 unk1; // 0x024
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u32 memfill_start; // 0x028
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u32 memfill_size; // 0x02C
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u32 initial_sp_base; // 0x030
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u32 initial_sp_offset; // 0x034
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u32 reserved[5]; // 0x038-0x04B
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char marker[0x7B4]; // 0x04C-0x7FF
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};
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static_assert(sizeof(PSEXEHeader) == 0x800);
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#pragma pack(pop)
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Hash GetHash(const Image& image);
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std::optional<Image> LoadImageFromFile(std::string_view filename);
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std::optional<Hash> GetHashForFile(std::string_view filename);
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bool IsValidHashForRegion(ConsoleRegion region, const Hash& hash);
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void PatchBIOS(Image& image, u32 address, u32 value, u32 mask = UINT32_C(0xFFFFFFFF));
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bool PatchBIOSEnableTTY(Image& image, const Hash& hash);
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bool PatchBIOSFastBoot(Image& image, const Hash& hash);
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bool PatchBIOSForEXE(Image& image, u32 r_pc, u32 r_gp, u32 r_sp, u32 r_fp);
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bool IsValidPSExeHeader(const PSEXEHeader& header, u32 file_size);
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} // namespace BIOS
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