mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 18:25:35 -04:00
Shokunin
59 lines
2.5 KiB
C
59 lines
2.5 KiB
C
#include "cpu_state.h"
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#include "psx_execution.h"
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#include <stdlib.h>
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#include <setjmp.h>
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#define CHECK(c) do { if (!(c)) abort(); } while (0)
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PSX_THREAD_LOCAL PsxExecutionDispatch g_psx_execution_dispatch;
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PSX_THREAD_LOCAL PsxExecutionAbort g_psx_execution_abort;
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PSX_THREAD_LOCAL int g_psx_dispatch_depth, g_psx_call_bail;
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PSX_THREAD_LOCAL uint64_t g_psx_bail_first, g_psx_bail_resolved, g_psx_bail_flattened, g_psx_bail_anomaly;
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PSX_THREAD_LOCAL void (*g_overlay_flush_pending_cycles)(void);
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PSX_THREAD_LOCAL uint32_t g_debug_current_func_addr;
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static unsigned visits, flushed;
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static jmp_buf landing;
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static void flush(void) { ++flushed; }
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static void failure(const char *reason, uint32_t addr) {
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CHECK(reason && addr == 0xDEAD); longjmp(landing, 1);
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}
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static void leaf(CPUState *cpu) {
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CHECK(g_overlay_flush_pending_cycles == flush);
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++visits; cpu->gpr[2] += 17; cpu->pc = cpu->gpr[31];
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}
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static void nested(CPUState *cpu) {
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uint32_t ra = cpu->gpr[31];
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cpu->gpr[31] = 0x104;
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g_psx_execution_dispatch(cpu, 0x200, 0x104);
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CHECK(!g_psx_call_bail && !cpu->pc);
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cpu->gpr[31] = ra; cpu->pc = ra;
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}
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static void wild(CPUState *cpu) { cpu->gpr[31] = 0x400; cpu->pc = 0; }
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static void final(CPUState *cpu) { ++visits; cpu->gpr[31] = 0x800; cpu->pc = 0x800; }
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static int lookup(void *user, CPUState *cpu, uint32_t pc, PsxExecutionCode *code, void (**out_flush)(void)) {
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CHECK(user == &visits && cpu);
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code->resume_pc = pc; *out_flush = flush;
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switch (pc) {
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case 0x100: code->function = nested; break;
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case 0x200: code->function = leaf; break;
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case 0x300: code->function = wild; break;
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case 0x400: code->function = final; break;
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case 0x500: code->resume_pc = cpu->gpr[31]; return 2;
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default: return 0;
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}
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return 1;
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}
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int main(void) {
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CPUState cpu = {0}; cpu.gpr[29] = 0x10000; cpu.gpr[31] = 0x800;
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psx_execution_begin(&visits, lookup, failure);
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g_psx_execution_dispatch(&cpu, 0x100, 0x800);
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CHECK(visits == 1 && cpu.gpr[2] == 17 && !cpu.pc && !g_psx_dispatch_depth);
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CHECK(flushed >= 3 && !g_overlay_flush_pending_cycles);
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g_psx_execution_dispatch(&cpu, 0x300, 0x800);
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CHECK(visits == 2 && g_psx_bail_first == 1 && g_psx_bail_flattened == 1);
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g_psx_execution_dispatch(&cpu, 0x500, 0x800);
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CHECK(!cpu.pc && !g_psx_dispatch_depth);
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if (!setjmp(landing)) { g_psx_execution_dispatch(&cpu, 0xDEAD, 0x800); abort(); }
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psx_execution_end();
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CHECK(!g_psx_execution_dispatch && !g_psx_execution_abort && !g_psx_dispatch_depth);
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return 0;
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}
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