mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-25 18:05:12 -04:00
Matthew Stanley
541a9b067f
CloseTh(current); ChangeTh(other) still stores the outgoing registers, as the BIOS exception handler does. Fixes both the HLE scheduler and the LLE fiber bridge. Reported by michaelm-afk. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/* SYS03 must preserve register RAM even after CloseTh marks the outgoing TCB
|
|
* free. Generic register patterns only: no game addresses. */
|
|
#include <assert.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <setjmp.h>
|
|
#include "cpu_state.h"
|
|
#include "psx_scheduler.h"
|
|
|
|
static uint32_t ram[0x10000 / 4];
|
|
static CPUState cpu;
|
|
uint64_t s_frame_count = 0;
|
|
|
|
static uint32_t rd(uint32_t a) { assert(a < sizeof ram && !(a & 3)); return ram[a / 4]; }
|
|
static void wr(uint32_t a, uint32_t v) { assert(a < sizeof ram && !(a & 3)); ram[a / 4] = v; }
|
|
int psx_get_in_exception(void) { return 0; }
|
|
int overlay_loader_shadow_native_thread_switch_bail(void) { return 0; }
|
|
int parity_trace_is_armed(void) { return 0; }
|
|
void debug_server_log_thread_event(uint32_t k, CPUState* c, uint32_t a, uint32_t b, uint32_t p)
|
|
{ (void)k; (void)c; (void)a; (void)b; (void)p; }
|
|
int psx_syscall(CPUState*, uint32_t);
|
|
|
|
int main(void)
|
|
{
|
|
const uint32_t pcb = 0xe000, old = 0xe1f4, target = old + 0xc0;
|
|
ram[0x108 / 4] = pcb;
|
|
ram[0x110 / 4] = old;
|
|
ram[0x114 / 4] = 4 * 0xc0;
|
|
ram[pcb / 4] = old;
|
|
ram[old / 4] = 0x1000; /* Closed, but still the current thread until SYS03. */
|
|
ram[target / 4] = 0x4000;
|
|
cpu.read_word = rd;
|
|
cpu.write_word = wr;
|
|
for (unsigned i = 1; i < 32; i++) cpu.gpr[i] = 0x16160000u + i;
|
|
cpu.gpr[4] = 3;
|
|
cpu.gpr[5] = target;
|
|
cpu.gpr[31] = 0x2104;
|
|
cpu.cop0[12] = 0x401;
|
|
cpu.hi = 0xaaaa;
|
|
cpu.lo = 0xbbbb;
|
|
if (setjmp(g_scheduler_jmpbuf) == 0) {
|
|
psx_syscall(&cpu, 0);
|
|
assert(!"must yield to scheduler");
|
|
}
|
|
assert(ram[old / 4] == 0x1000); /* Saving never reopens the retired thread. */
|
|
assert(ram[pcb / 4] == target);
|
|
assert(ram[(old + 8 + 22 * 4) / 4] == 0x16160016u);
|
|
assert(ram[(old + 8 + 128) / 4] == 0x2104);
|
|
assert(ram[(old + 8 + 132) / 4] == 0xaaaa && ram[(old + 8 + 136) / 4] == 0xbbbb);
|
|
assert(g_sched_escape.target_tcb == target);
|
|
return 0;
|
|
}
|