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ultramodern / recomp runtime: Relax alignment restrictions in osEPiReadIo, implement some more stubs (#130)

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- osDriveRomInit
 - __osPiGetAccess
 - __osPiRelAccess
 - osPfsChecker
This commit is contained in:
Tharo 2024-05-14 05:21:51 +01:00 • committed by GitHub
parent d5fb5f50c1
commit 89af45ae34
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GPG key ID: B5690EEEBB952194
4 changed files with 34 additions and 2 deletions
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1
include/recomp_game.h
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@ -31,6 +31,7 @@ namespace recomp {
bool is_rom_loaded();
void set_rom_contents(std::vector<uint8_t>&& new_rom);
void do_rom_read(uint8_t* rdram, gpr ram_address, uint32_t physical_addr, size_t num_bytes);
void do_rom_pio(uint8_t* rdram, gpr ram_address, uint32_t physical_addr)
void start(ultramodern::WindowHandle window_handle, const ultramodern::audio_callbacks_t& audio_callbacks, const ultramodern::input_callbacks_t& input_callbacks, const ultramodern::gfx_callbacks_t& gfx_callbacks);
void start_game(Game game);
void message_box(const char* message);

4
src/recomp/pak.cpp
View file

@ -29,3 +29,7 @@ extern "C" void osPfsFindFile_recomp(uint8_t * rdram, recomp_context * ctx) {
extern "C" void osPfsReadWriteFile_recomp(uint8_t * rdram, recomp_context * ctx) {
ctx->r2 = 1; // PFS_ERR_NOPACK
}
extern "C" void osPfsChecker_recomp(uint8_t * rdram, recomp_context * ctx) {
ctx->r2 = 1; // PFS_ERR_NOPACK
}

28
src/recomp/pi.cpp
View file

@ -25,6 +25,7 @@ void recomp::set_rom_contents(std::vector<uint8_t>&& new_rom) {
// that involve physical addresses don't need to be handled for flashram.
constexpr uint32_t sram_base = 0x08000000;
constexpr uint32_t rom_base = 0x10000000;
constexpr uint32_t drive_base = 0x06000000;
constexpr uint32_t k1_to_phys(uint32_t addr) {
return addr & 0x1FFFFFFF;
@ -34,6 +35,12 @@ constexpr uint32_t phys_to_k1(uint32_t addr) {
return addr | 0xA0000000;
}
extern "C" void __osPiGetAccess_recomp(uint8_t* rdram, recomp_context* ctx) {
}
extern "C" void __osPiRelAccess_recomp(uint8_t* rdram, recomp_context* ctx) {
}
extern "C" void osCartRomInit_recomp(uint8_t* rdram, recomp_context* ctx) {
OSPiHandle* handle = TO_PTR(OSPiHandle, ultramodern::cart_handle);
handle->type = 0; // cart
@ -43,6 +50,15 @@ extern "C" void osCartRomInit_recomp(uint8_t* rdram, recomp_context* ctx) {
ctx->r2 = (gpr)ultramodern::cart_handle;
}
extern "C" void osDriveRomInit_recomp(uint8_t * rdram, recomp_context * ctx) {
OSPiHandle* handle = TO_PTR(OSPiHandle, ultramodern::drive_handle);
handle->type = 1; // bulk
handle->baseAddress = phys_to_k1(drive_base);
handle->domain = 0;
ctx->r2 = (gpr)ultramodern::drive_handle;
}
extern "C" void osCreatePiManager_recomp(uint8_t* rdram, recomp_context* ctx) {
;
}
@ -61,6 +77,16 @@ void recomp::do_rom_read(uint8_t* rdram, gpr ram_address, uint32_t physical_addr
}
}
void recomp::do_rom_pio(uint8_t* rdram, gpr ram_address, uint32_t physical_addr) {
assert((physical_addr & 0x3) == 0 && "PIO not 4-byte aligned in device, currently unsupported");
assert((ram_address & 0x3) == 0 && "PIO not 4-byte aligned in RDRAM, currently unsupported");
uint8_t* rom_addr = rom.data() + physical_addr - rom_base;
MEM_B(0, ram_address) = *rom_addr++;
MEM_B(1, ram_address) = *rom_addr++;
MEM_B(2, ram_address) = *rom_addr++;
MEM_B(3, ram_address) = *rom_addr++;
}
struct {
std::array<char, 0x20000> save_buffer;
std::thread saving_thread;
@ -247,7 +273,7 @@ extern "C" void osEPiReadIo_recomp(RDRAM_ARG recomp_context * ctx) {
if (physical_addr > rom_base) {
// cart rom
recomp::do_rom_read(PASS_RDRAM dramAddr, physical_addr, sizeof(uint32_t));
recomp::do_rom_pio(PASS_RDRAM dramAddr, physical_addr);
} else {
// sram
assert(false && "SRAM ReadIo unimplemented");

3
ultramodern/ultramodern.hpp
View file

@ -53,7 +53,8 @@ namespace ultramodern {
// We need a place in rdram to hold the PI handles, so pick an address in extended rdram
constexpr uint32_t rdram_size = 1024 * 1024 * 16; // 16MB to give extra room for anything custom
constexpr int32_t cart_handle = 0x80800000;
constexpr int32_t flash_handle = (int32_t)(cart_handle + sizeof(OSPiHandle));
constexpr int32_t drive_handle = (int32_t)(cart_handle + sizeof(OSPiHandle));
constexpr int32_t flash_handle = (int32_t)(drive_handle + sizeof(OSPiHandle));
constexpr uint32_t save_size = 1024 * 1024 / 8; // Maximum save size, 1Mbit for flash
// Initialization.