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Tweaking OpenBIOS' fastboot to work with cheat roms. #1465

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merged 1 commit into from
Nov 22, 2023
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Tweaking OpenBIOS' fastboot to work with cheat roms. #1465

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7 changes: 5 additions & 2 deletions src/mips/openbios/shell/shell.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,10 +47,13 @@ int startShell(uint32_t arg) {
}
#endif
#ifdef OPENBIOS_FASTBOOT
return 0;
// Embed a simple jr $ra / nop to simulate a shell being copied and run,
// so cheat cart hooks and other tricks can still work properly.
static const uint32_t dummy[2] = {0x03e00008, 0};
memcpy((uint32_t *)0x80030000, dummy, sizeof(dummy));
#else
memcpy((uint32_t *)0x80030000, _binary_shell_bin_start, _binary_shell_bin_end - _binary_shell_bin_start);
#endif
flushCache();
return ((int (*)(int))0x80030000)(arg);
#endif
}