mirror of
https://github.com/jkdansereau/goldeneye-pc-port.git
synced 2026-10-24 00:02:45 +02:00
James Dansereau
2aad171344
- scripts/gen_romassets.py: emit absolute cart-address asset symbols (0x10000000 + rom_offset) from filelist.<r>.csv + the asset .s files, in file_resource_table.inc.c order. US region (romassets_u.s). - romdata.c: load/validate the GE-specific header (magic, name @0x20, cart ID @0x3C, country @0x3E) and map the .z64 at cart base 0x10000000 so every &asset-symbol is a live host pointer. - libultra.c: osPiStartDma/osPiRawStartDma now service reads as bounds-checked memcpys from the mapped ROM (synchronous completion). - system.c: implement sysResolvePath ($S data dir, $E exe dir). - video.c: real SDL2 window + GL context + clear/swap frame loop with FPS accounting; main.c runs a Phase 1 demo loop (ESC quits) until the software RSP/scheduler can drive mainproc(). - CMakeLists: project(... ASM), wire romassets_<region>.s, drop assetstubs.c (replaced by generated symbols); n64stubs.c keeps only pure-RAM segment markers. - docs: findings D18-D23 (header offsets, BE music table, .rz tracks, scanner-prefixed manifest names, CMake ASM gotcha, absolute-symbol approach). Verified: baserom.u.z64 (12MB) passes validation and maps at 0x10000000; window opens and renders until killed; asset offsets spot-checked against ROM bytes (music bank seqCount=63 BE, first track offset 508).
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
#ifndef PORT_ROMDATA_H
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#define PORT_ROMDATA_H
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/*
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* ROM loading: reads the .z64 ROM from the data dir and exposes its segments.
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* Modelled on the PD port's port/include/romdata.h.
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*
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* The N64 build links assets in from the ROM at fixed addresses. The PC port
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* instead loads the ROM file and maps the game's data segments (code, data,
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* assets) into a heap-allocated image, then patches the segment table so the
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* game's IMAGESEG / asset references resolve into that image.
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*/
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#include <PR/ultratypes.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Load the ROM for the configured ROMID from the data dir.
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* Returns 0 on success, non-zero on failure.
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*/
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int romdataInit(void);
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void romdataDestroy(void);
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/* Pointer to the loaded ROM image (start of the .z64). When the image is
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* mapped at the N64 cart base this is 0x10000000 itself. */
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const u8 *romdataGetRom(void);
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/* Size of the loaded ROM in bytes. */
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u32 romdataGetRomSize(void);
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/*
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* True if [addr, addr+size) is a valid cart address (0x10000000+) inside the
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* mapped image. The PI shims call this before servicing DMA.
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*/
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int romdataCartAddrValid(u32 addr, u32 size);
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/*
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* Map an N64 virtual address (0xA0000000 RDRAM space) to the corresponding
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* pointer in the loaded image. Used to resolve asset/segment references.
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*/
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const void *romdataMapVa(u32 va);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PORT_ROMDATA_H */
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