mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 02:11:36 -04:00
Claude
698e100816
Extends psxrecomp_cdcmd_cb_t (and the beetle_cdcmd_trace ring + cdrom_cmd_dump JSON) with the guest PC at dispatch, read via PS_CPU::GetRegister(GSREG_PC). Lets the boot-command-stream oracle-diff localize the first divergent command's call site (kernel vs shell vs game) instead of only the command byte — the next step in isolating the early-boot branch divergence behind Kula World bug 3. Builds clean; behavior-inert when no listener is attached. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BdjxoRB1f9VQsNzZayCgGS
1041 lines
44 KiB
C++
1041 lines
44 KiB
C++
/* beetle_libretro.cpp — psx-beetle libretro driver + ring buffers.
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*
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* Drives the Beetle PSX (mednafen-psx) libretro core for psx-beetle.
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* Exposes:
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* - beetle_init / beetle_shutdown / beetle_run_frame (lifecycle)
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* - beetle_get_framebuffer / beetle_get_pad (display + input)
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* - beetle_read_byte / beetle_read_word (RAM read)
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* - beetle_get_ram / beetle_get_vram / beetle_get_scratchpad
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* - SIO trace ring buffer (beetle_get_sio_trace/reset/total)
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* - wtrace ring buffer (beetle_wtrace_arm/disarm/reset/get/total/...)
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* - fntrace ring buffer (beetle_fntrace_arm/disarm/reset/get/total/...)
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*/
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <cstdarg>
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#include "libretro.h"
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#include "mednafen/psx/psx.h"
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#include "mednafen/psx/cpu.h"
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#include "mednafen/psx/gpu.h"
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#include "mednafen/psx/spu.h"
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#include "mednafen/psx/frontio.h"
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#include "mednafen/psx/irq.h"
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#include "beetle_history.h"
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/* GPU global lives in PS_GPU's translation unit; psx.h doesn't extern it.
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* Declared here for the per-frame display-state snapshot. NOTE: GPU is
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* a struct VALUE in gpu.cpp (`PS_GPU GPU;`), not a pointer, despite the
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* `extern PS_GPU *GPU;` declaration in beetle-psx/mednafen/psx/debug.cpp.
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* That debug.cpp declaration is buggy and would crash if its file were
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* actually compiled — we get the value-type declaration right here. */
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extern PS_GPU GPU;
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namespace {
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/* ---- State ---- */
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unsigned s_frame_width = 320;
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unsigned s_frame_height = 240;
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uint16_t s_joypad = 0xFFFF; /* all released (active-low) */
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bool s_loaded = false;
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uint32_t s_frame_count = 0;
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/* ---- SIO byte trace ---- */
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#define BEETLE_SIO_TRACE_CAP 65536
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struct BeetleSioTraceEntry {
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uint32_t seq; uint8_t tx, rx; uint16_t ctrl;
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};
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static BeetleSioTraceEntry s_sio_trace[BEETLE_SIO_TRACE_CAP];
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static int s_sio_trace_idx = 0;
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static uint32_t s_sio_trace_seq = 0;
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static void sio_trace_callback(uint8_t tx, uint8_t rx, uint16_t ctrl) {
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BeetleSioTraceEntry *e = &s_sio_trace[s_sio_trace_idx];
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e->seq = s_sio_trace_seq++; e->tx = tx; e->rx = rx; e->ctrl = ctrl;
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s_sio_trace_idx = (s_sio_trace_idx + 1) % BEETLE_SIO_TRACE_CAP;
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}
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/* ---- CD command trace (oracle-diff for the Kula World CD-init wedge) ---- */
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#define BEETLE_CDCMD_TRACE_CAP 8192
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struct BeetleCdcmdEntry {
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uint32_t seq; uint32_t pc; uint8_t cmd, nargs, a0, a1, a2;
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};
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static BeetleCdcmdEntry s_cdcmd_trace[BEETLE_CDCMD_TRACE_CAP];
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static int s_cdcmd_idx = 0;
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static uint32_t s_cdcmd_seq = 0;
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static void cdcmd_trace_callback(uint8_t cmd, uint8_t nargs,
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uint8_t a0, uint8_t a1, uint8_t a2,
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uint32_t pc) {
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BeetleCdcmdEntry *e = &s_cdcmd_trace[s_cdcmd_idx];
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e->seq = s_cdcmd_seq++; e->pc = pc; e->cmd = cmd; e->nargs = nargs;
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e->a0 = a0; e->a1 = a1; e->a2 = a2;
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s_cdcmd_idx = (s_cdcmd_idx + 1) % BEETLE_CDCMD_TRACE_CAP;
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}
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/* ---- wtrace_all ring (ALWAYS-ON; no filter; captures every write) ----
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* Per global rule "ring buffers always-on": every write hits this ring
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* unconditionally so probes connected late can still query the last ~1s
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* of activity without needing to have armed a range pre-event.
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*
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* Sizing trade-off: 256K * 32B = 8 MB. At ~250k writes/s idle / ~2M
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* writes/s under heavy emulation, retention window is ~1s under load
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* and ~1s idle. If the user needs longer retention of specific cells
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* they should arm the focused wtrace ring (large capacity, narrow
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* filter, longer wrap). The two rings are complementary, NOT
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* redundant — focused gives rich register window + long retention for
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* armed cells; all gives lean coverage of EVERY write for last second. */
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#define BEETLE_WTRACE_ALL_CAP 262144
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struct BeetleWtraceAllEntry {
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uint64_t seq;
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uint32_t addr;
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uint32_t new_val;
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uint32_t pc;
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uint32_t ra;
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uint32_t frame;
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uint8_t w;
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uint8_t pad[3];
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};
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static BeetleWtraceAllEntry s_wtrace_all[BEETLE_WTRACE_ALL_CAP];
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static uint32_t s_wtrace_all_idx = 0;
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static uint64_t s_wtrace_all_seq = 0;
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/* ---- wtrace ring (filtered by armed physical-RAM ranges) ----
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* Parity contract with runtime's WriteTraceEntry: same field names and
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* widths on the wire, captured by reading PSX_CPU GPRs at callback time.
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*
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* Gaps relative to runtime (documented, never zero-faked):
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* - old_val: callback fires AFTER the write so the pre-write value is
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* already gone. Field omitted from beetle output. Wire it later by
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* extending psxrecomp_wtrace_cb_t to receive the old value.
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* - func_addr: beetle has no per-function dispatch gate; field omitted.
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* - cpu_pc vs pc: identical on beetle (single in-order interpreter), so
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* cpu_pc is reported equal to pc rather than duplicated. */
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#define BEETLE_WTRACE_CAP 65536
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#define BEETLE_WTRACE_MAX_RANGES 16
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struct BeetleWtraceEntry {
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uint64_t seq;
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uint32_t addr;
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uint32_t value; /* "new" on the wire */
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uint32_t pc;
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uint32_t ra;
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uint32_t sp;
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uint32_t v0, v1;
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uint32_t a0, a1, a2, a3;
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uint32_t t0, t1;
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uint32_t frame;
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uint8_t slot_idx; /* beetle-only: current memcard slot byte */
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uint8_t size; /* "w" on the wire */
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uint8_t pad[2];
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};
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static BeetleWtraceEntry s_wtrace[BEETLE_WTRACE_CAP];
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static uint32_t s_wtrace_idx = 0;
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static uint64_t s_wtrace_seq = 0;
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static struct { uint32_t lo, hi; } s_wtrace_ranges[BEETLE_WTRACE_MAX_RANGES];
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static int s_wtrace_range_count = 0;
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static void wtrace_callback(uint32_t addr, uint32_t value,
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uint32_t pc, uint32_t ra, uint8_t size)
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{
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/* ALWAYS-ON catch-all ring: lean fields, no filter, fires before the
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* focused-range filter so a connected probe can read recent writes
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* regardless of what's armed. */
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{
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BeetleWtraceAllEntry *a = &s_wtrace_all[s_wtrace_all_idx];
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a->seq = s_wtrace_all_seq++;
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a->addr = addr;
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a->new_val = value;
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a->pc = pc;
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a->ra = ra;
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a->frame = s_frame_count;
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a->w = size;
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s_wtrace_all_idx = (s_wtrace_all_idx + 1) % BEETLE_WTRACE_ALL_CAP;
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}
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if (s_wtrace_range_count == 0) return;
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uint32_t phys = addr & 0x1FFFFFFFu;
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int hit = 0;
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for (int i = 0; i < s_wtrace_range_count; i++) {
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uint32_t lo = s_wtrace_ranges[i].lo;
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uint32_t hi = s_wtrace_ranges[i].hi;
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uint32_t phi = phys + size;
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if (phi > lo && phys < hi) { hit = 1; break; }
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}
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if (!hit) return;
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uint8_t slot = 0;
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if (MainRAM) slot = MainRAM->data8[0x7264];
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BeetleWtraceEntry *e = &s_wtrace[s_wtrace_idx];
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e->seq = s_wtrace_seq++;
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e->addr = addr;
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e->value = value;
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e->pc = pc;
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e->ra = ra;
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e->frame = s_frame_count;
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e->slot_idx = slot;
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e->size = size;
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/* Rich register window — read live from PSX_CPU. Parity with runtime's
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* WriteTraceEntry. Only paid on filter hits so volume stays bounded. */
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if (PSX_CPU) {
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char dummy[8] = {0};
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e->sp = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 29, dummy, sizeof(dummy));
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e->v0 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 2, dummy, sizeof(dummy));
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e->v1 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 3, dummy, sizeof(dummy));
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e->a0 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 4, dummy, sizeof(dummy));
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e->a1 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 5, dummy, sizeof(dummy));
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e->a2 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 6, dummy, sizeof(dummy));
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e->a3 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 7, dummy, sizeof(dummy));
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e->t0 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 8, dummy, sizeof(dummy));
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e->t1 = PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 9, dummy, sizeof(dummy));
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} else {
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e->sp = e->v0 = e->v1 = 0;
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e->a0 = e->a1 = e->a2 = e->a3 = 0;
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e->t0 = e->t1 = 0;
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}
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s_wtrace_idx = (s_wtrace_idx + 1) % BEETLE_WTRACE_CAP;
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}
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/* ---- fntrace ring (filtered by armed target PCs, or unfiltered) ---- */
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#define BEETLE_FNTRACE_CAP 65536
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#define BEETLE_FNTRACE_MAX_ARMS 64
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struct BeetleFnTraceEntry {
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uint64_t seq;
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uint32_t caller_pc, target_pc, parent_ra, a0, a1, frame, sp;
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uint8_t kind, pad[3];
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};
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static BeetleFnTraceEntry s_fntrace[BEETLE_FNTRACE_CAP];
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static uint32_t s_fntrace_idx = 0;
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static uint64_t s_fntrace_seq = 0;
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static uint32_t s_fntrace_arms[BEETLE_FNTRACE_MAX_ARMS];
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static int s_fntrace_arm_count = 0;
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static int s_fntrace_unfiltered = 0;
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static void fntrace_callback(uint32_t caller_pc, uint32_t target_pc,
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uint32_t parent_ra, uint32_t a0, uint32_t a1,
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uint8_t kind)
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{
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if (!s_fntrace_unfiltered) {
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if (s_fntrace_arm_count == 0) return;
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uint32_t tphys = target_pc & 0x1FFFFFFFu;
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int hit = 0;
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for (int i = 0; i < s_fntrace_arm_count; i++)
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if (s_fntrace_arms[i] == tphys) { hit = 1; break; }
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if (!hit) return;
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}
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BeetleFnTraceEntry *e = &s_fntrace[s_fntrace_idx];
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e->seq = s_fntrace_seq++;
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e->caller_pc = caller_pc;
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e->target_pc = target_pc;
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e->parent_ra = parent_ra;
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e->a0 = a0;
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e->a1 = a1;
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e->frame = s_frame_count;
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e->kind = kind;
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/* SP at retire — needed for the func_8001A954 SP/RA-lifecycle oracle
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* (does the invocation's stack balance / return). GPR[29] read live. */
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{
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char dummy[8] = {0};
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e->sp = PSX_CPU ? PSX_CPU->GetRegister(PS_CPU::GSREG_GPR + 29, dummy, sizeof(dummy)) : 0;
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}
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s_fntrace_idx = (s_fntrace_idx + 1) % BEETLE_FNTRACE_CAP;
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}
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/* ---- Disk control + system dir ---- */
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static char s_system_dir[4096] = ".";
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static struct retro_disk_control_callback s_disk_cb = {0};
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static struct retro_disk_control_ext_callback s_disk_cb_ext = {0};
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static int s_have_disk_cb = 0;
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static int s_have_disk_cb_ext = 0;
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/* ---- Framebuffer capture ---- */
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#define BEETLE_FB_MAX_PIXELS (640 * 512)
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static uint32_t s_fb[BEETLE_FB_MAX_PIXELS];
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static unsigned s_fb_width = 0;
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static unsigned s_fb_height = 0;
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void on_video_refresh(const void *data, unsigned width, unsigned height, size_t pitch) {
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s_frame_width = width;
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s_frame_height = height;
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if (!data || width == 0 || height == 0) return;
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if (width > 640) width = 640;
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if (height > 512) height = 512;
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s_fb_width = width;
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s_fb_height = height;
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const uint8_t *src = (const uint8_t *)data;
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for (unsigned y = 0; y < height; y++) {
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const uint32_t *src_row = (const uint32_t *)(src + y * pitch);
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uint32_t *dst_row = &s_fb[y * width];
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for (unsigned x = 0; x < width; x++) dst_row[x] = src_row[x];
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}
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}
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void on_audio_sample(int16_t l, int16_t r) { (void)l; (void)r; }
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size_t on_audio_sample_batch(const int16_t *data, size_t frames) { (void)data; return frames; }
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void on_input_poll(void) {}
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int16_t on_input_state(unsigned port, unsigned device, unsigned index, unsigned id) {
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(void)index;
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if (port != 0 || device != RETRO_DEVICE_JOYPAD) return 0;
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/* Map libretro button ID → PS1 pad bit. */
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static const int lr_to_psx[16] = {
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14, 15, 0, 3, 4, 6, 7, 5, 13, 12, 10, 11, 8, 9, 1, 2
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};
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if (id >= 16) return 0;
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int psx_bit = lr_to_psx[id];
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return ((s_joypad >> psx_bit) & 1) ? 0 : 1;
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}
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void on_log_printf(enum retro_log_level level, const char *fmt, ...) {
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(void)level;
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va_list ap; va_start(ap, fmt);
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std::vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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bool on_environment(unsigned cmd, void *data) {
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switch (cmd) {
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case RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY: *(const char**)data = s_system_dir; return true;
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case RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY: *(const char**)data = "."; return true;
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case RETRO_ENVIRONMENT_SET_PIXEL_FORMAT: return true;
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case RETRO_ENVIRONMENT_GET_VARIABLE: {
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struct retro_variable *var = (struct retro_variable *)data;
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if (var && var->key) {
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if (!strcmp(var->key, "beetle_psx_cpu_dynarec")) { var->value = "disabled"; return true; }
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if (!strcmp(var->key, "beetle_psx_skip_bios")) { var->value = "disabled"; return true; }
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if (!strcmp(var->key, "beetle_psx_override_bios")) { var->value = "disabled"; return true; }
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if (!strcmp(var->key, "beetle_psx_bios_region")) { var->value = "any"; return true; }
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if (!strcmp(var->key, "beetle_psx_renderer")) { var->value = "software"; return true; }
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if (!strcmp(var->key, "beetle_psx_analog_toggle")) { var->value = "disabled"; return true; }
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if (!strcmp(var->key, "beetle_psx_cd_fastload")) { var->value = "2x(native)"; return true; }
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if (!strcmp(var->key, "beetle_psx_use_mednafen_memcard0_method")){ var->value = "mednafen"; return true; }
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if (!strcmp(var->key, "beetle_psx_enable_memcard1")) { var->value = "enabled"; return true; }
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if (!strcmp(var->key, "beetle_psx_shared_memory_cards")) { var->value = "disabled"; return true; }
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if (!strcmp(var->key, "beetle_psx_cd_access_method")) { var->value = "sync"; return true; }
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}
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return false;
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}
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case RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE: *(bool*)data = false; return true;
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case RETRO_ENVIRONMENT_GET_LOG_INTERFACE: {
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struct retro_log_callback *cb = (struct retro_log_callback *)data;
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cb->log = on_log_printf;
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return true;
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}
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case RETRO_ENVIRONMENT_SET_MEMORY_MAPS:
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case RETRO_ENVIRONMENT_SET_GEOMETRY:
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case RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS:
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case RETRO_ENVIRONMENT_SET_CONTROLLER_INFO:
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case RETRO_ENVIRONMENT_GET_PERF_INTERFACE:
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case RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE:
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return false;
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case RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE: {
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const struct retro_disk_control_callback *cb =
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(const struct retro_disk_control_callback *)data;
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if (cb) { s_disk_cb = *cb; s_have_disk_cb = 1; }
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return true;
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}
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case RETRO_ENVIRONMENT_SET_DISK_CONTROL_EXT_INTERFACE: {
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const struct retro_disk_control_ext_callback *cb =
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(const struct retro_disk_control_ext_callback *)data;
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if (cb) { s_disk_cb_ext = *cb; s_have_disk_cb_ext = 1; }
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return true;
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}
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case RETRO_ENVIRONMENT_GET_DISK_CONTROL_INTERFACE_VERSION: {
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unsigned *ver = (unsigned*)data;
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if (ver) *ver = 1;
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return true;
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}
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default: return false;
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}
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}
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} /* anonymous namespace */
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/* ============================================================ */
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/* ============== Public extern "C" interface =================== */
|
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/* ============================================================ */
|
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|
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extern "C" int beetle_init_with_disc(const char *bios_path, const char *disc_path);
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extern "C" int beetle_init(const char *bios_path) {
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return beetle_init_with_disc(bios_path, NULL);
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}
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extern "C" int beetle_init_with_disc(const char *bios_path, const char *disc_path) {
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if (s_loaded) return 0;
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/* Allocate the per-frame history ring once. Mirrors runtime's
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* frame_history allocation in debug_server_init(). */
|
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beetle_history_init();
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/* Set system directory to the directory containing the BIOS. */
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strncpy(s_system_dir, bios_path, sizeof(s_system_dir) - 1);
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char *last_sep = strrchr(s_system_dir, '/');
|
||
if (!last_sep) last_sep = strrchr(s_system_dir, '\\');
|
||
if (last_sep) *last_sep = '\0';
|
||
else strcpy(s_system_dir, ".");
|
||
|
||
retro_set_environment(on_environment);
|
||
retro_set_video_refresh(on_video_refresh);
|
||
retro_set_audio_sample(on_audio_sample);
|
||
retro_set_audio_sample_batch(on_audio_sample_batch);
|
||
retro_set_input_poll(on_input_poll);
|
||
retro_set_input_state(on_input_state);
|
||
|
||
std::fprintf(stderr, "[psx-beetle] retro_init...\n"); std::fflush(stderr);
|
||
retro_init();
|
||
|
||
/* If disc_path is non-NULL, load that real disc and keep it inserted.
|
||
* Otherwise fall back to the dummy-cue + eject behavior so the BIOS
|
||
* shows its shell (memcard editor / CD player). */
|
||
char load_path[4096];
|
||
if (disc_path && *disc_path) {
|
||
strncpy(load_path, disc_path, sizeof(load_path) - 1);
|
||
load_path[sizeof(load_path) - 1] = '\0';
|
||
} else {
|
||
snprintf(load_path, sizeof(load_path), "%s/dummy.cue", s_system_dir);
|
||
}
|
||
std::fprintf(stderr, "[psx-beetle] retro_load_game(%s)...\n", load_path); std::fflush(stderr);
|
||
|
||
struct retro_game_info info;
|
||
memset(&info, 0, sizeof(info));
|
||
info.path = load_path;
|
||
if (!retro_load_game(&info)) {
|
||
std::fprintf(stderr, "[psx-beetle] retro_load_game failed\n");
|
||
retro_deinit();
|
||
return -1;
|
||
}
|
||
|
||
s_loaded = true;
|
||
s_frame_count = 0;
|
||
|
||
/* Eject the fake disc so BIOS shows the shell selector — only when no
|
||
* real disc was provided. With a real disc, keep it inserted so the
|
||
* BIOS proceeds straight into game boot. */
|
||
if (!disc_path || !*disc_path) {
|
||
if (s_have_disk_cb_ext && s_disk_cb_ext.set_eject_state) {
|
||
s_disk_cb_ext.set_eject_state(true);
|
||
} else if (s_have_disk_cb && s_disk_cb.set_eject_state) {
|
||
s_disk_cb.set_eject_state(true);
|
||
}
|
||
}
|
||
|
||
/* Memcard sanity-check (warn-only). */
|
||
{
|
||
const char *card_files[] = { "dummy.0.mcr", "dummy.1.mcr" };
|
||
for (int sl = 0; sl < 2; sl++) {
|
||
FILE *f = fopen(card_files[sl], "rb");
|
||
if (!f) {
|
||
std::fprintf(stderr,
|
||
"[psx-beetle] WARNING: %s missing — slot %d will be blank\n",
|
||
card_files[sl], sl + 1);
|
||
continue;
|
||
}
|
||
fseek(f, 0, SEEK_END); long sz = ftell(f); fseek(f, 0, SEEK_SET);
|
||
unsigned char magic[2] = {0, 0};
|
||
fread(magic, 1, 2, f); fclose(f);
|
||
int valid = (sz == 131072 && magic[0] == 'M' && magic[1] == 'C');
|
||
std::fprintf(stderr,
|
||
"[psx-beetle] memcard slot %d: %s size=%ld magic=%c%c %s\n",
|
||
sl + 1, card_files[sl], sz,
|
||
magic[0]?magic[0]:'?', magic[1]?magic[1]:'?',
|
||
valid ? "OK" : "INVALID");
|
||
}
|
||
}
|
||
|
||
if (PSX_FIO) {
|
||
PSX_FIO->SetSIOTraceCallback(sio_trace_callback);
|
||
std::fprintf(stderr, "[psx-beetle] SIO trace callback registered\n");
|
||
}
|
||
|
||
g_psxrecomp_wtrace_cb = wtrace_callback;
|
||
g_psxrecomp_fntrace_cb = fntrace_callback;
|
||
g_psxrecomp_cdcmd_cb = cdcmd_trace_callback;
|
||
std::fprintf(stderr, "[psx-beetle] wtrace + fntrace + cdcmd callbacks registered\n");
|
||
std::fflush(stderr);
|
||
|
||
return 0;
|
||
}
|
||
|
||
extern "C" void beetle_shutdown(void) {
|
||
if (!s_loaded) return;
|
||
retro_unload_game();
|
||
retro_deinit();
|
||
s_loaded = false;
|
||
}
|
||
|
||
extern "C" void beetle_run_frame(uint16_t pad1_buttons) {
|
||
if (!s_loaded) return;
|
||
s_joypad = pad1_buttons;
|
||
s_frame_count++;
|
||
retro_run();
|
||
beetle_history_record_frame();
|
||
}
|
||
|
||
extern "C" int beetle_get_framebuffer(uint32_t **out_pixels,
|
||
unsigned *out_w, unsigned *out_h) {
|
||
if (s_fb_width == 0 || s_fb_height == 0) return 0;
|
||
*out_pixels = s_fb;
|
||
*out_w = s_fb_width;
|
||
*out_h = s_fb_height;
|
||
return 1;
|
||
}
|
||
|
||
extern "C" uint16_t beetle_get_pad(void) { return s_joypad; }
|
||
extern "C" uint32_t beetle_get_frame_count(void) { return s_frame_count; }
|
||
extern "C" int beetle_is_loaded(void) { return s_loaded ? 1 : 0; }
|
||
|
||
extern "C" uint8_t beetle_read_byte(uint32_t phys) {
|
||
if (phys < 0x00800000u) {
|
||
uint32_t offset = phys & 0x1FFFFF;
|
||
if (MainRAM) return MainRAM->data8[offset];
|
||
}
|
||
if (phys >= 0x1F800000u && phys < 0x1F800400u) {
|
||
if (ScratchRAM) return ScratchRAM->data8[phys & 0x3FF];
|
||
}
|
||
if (phys >= 0x1FC00000u && phys < 0x1FC80000u) {
|
||
if (BIOSROM) return BIOSROM->data8[phys & 0x7FFFF];
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
extern "C" uint32_t beetle_read_word(uint32_t phys) {
|
||
if (phys < 0x00800000u) {
|
||
uint32_t offset = phys & 0x1FFFFF;
|
||
if (MainRAM && offset + 3 < 0x200000) {
|
||
uint32_t val; memcpy(&val, MainRAM->data8 + offset, 4); return val;
|
||
}
|
||
}
|
||
if (phys >= 0x1F800000u && phys < 0x1F800400u) {
|
||
uint32_t offset = phys & 0x3FF;
|
||
if (ScratchRAM && offset + 3 < 1024) {
|
||
uint32_t val; memcpy(&val, ScratchRAM->data8 + offset, 4); return val;
|
||
}
|
||
}
|
||
if (phys >= 0x1FC00000u && phys < 0x1FC80000u) {
|
||
uint32_t offset = phys & 0x7FFFF;
|
||
if (BIOSROM && offset + 3 < 0x80000) {
|
||
uint32_t val; memcpy(&val, BIOSROM->data8 + offset, 4); return val;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
extern "C" void beetle_get_ram(uint8_t *out_2mb) {
|
||
void *ram = retro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
|
||
size_t ram_size = retro_get_memory_size(RETRO_MEMORY_SYSTEM_RAM);
|
||
if (ram && ram_size > 0) {
|
||
size_t copy = ram_size < (2u * 1024 * 1024) ? ram_size : (2u * 1024 * 1024);
|
||
memcpy(out_2mb, ram, copy);
|
||
if (copy < 2u * 1024 * 1024) memset(out_2mb + copy, 0, 2u * 1024 * 1024 - copy);
|
||
} else {
|
||
memset(out_2mb, 0, 2u * 1024 * 1024);
|
||
}
|
||
}
|
||
|
||
extern "C" void beetle_get_vram(uint16_t *out_1mb) {
|
||
uint16_t *vram = GPU_get_vram();
|
||
if (vram) memcpy(out_1mb, vram, 1024 * 512 * 2);
|
||
else memset(out_1mb, 0, 1024 * 512 * 2);
|
||
}
|
||
|
||
extern "C" void beetle_get_scratchpad(uint8_t *out_1kb) {
|
||
if (ScratchRAM) memcpy(out_1kb, ScratchRAM->data8, 1024);
|
||
else memset(out_1kb, 0, 1024);
|
||
}
|
||
|
||
/* ---- SIO trace accessors ---- */
|
||
extern "C" uint32_t beetle_get_sio_trace(uint32_t *out_seq, uint8_t *out_tx,
|
||
uint8_t *out_rx, uint16_t *out_ctrl,
|
||
int max_count)
|
||
{
|
||
int avail = (int)(s_sio_trace_seq < (uint32_t)BEETLE_SIO_TRACE_CAP
|
||
? s_sio_trace_seq : BEETLE_SIO_TRACE_CAP);
|
||
int count = max_count < avail ? max_count : avail;
|
||
int start = (s_sio_trace_idx - count + BEETLE_SIO_TRACE_CAP) % BEETLE_SIO_TRACE_CAP;
|
||
for (int i = 0; i < count; i++) {
|
||
int idx = (start + i) % BEETLE_SIO_TRACE_CAP;
|
||
const BeetleSioTraceEntry *e = &s_sio_trace[idx];
|
||
out_seq[i] = e->seq;
|
||
out_tx[i] = e->tx;
|
||
out_rx[i] = e->rx;
|
||
out_ctrl[i] = e->ctrl;
|
||
}
|
||
return (uint32_t)count;
|
||
}
|
||
extern "C" uint32_t beetle_get_sio_trace_total(void) { return s_sio_trace_seq; }
|
||
extern "C" void beetle_reset_sio_trace(void) {
|
||
s_sio_trace_idx = 0;
|
||
s_sio_trace_seq = 0;
|
||
memset(s_sio_trace, 0, sizeof(s_sio_trace));
|
||
}
|
||
|
||
/* ---- CD command trace accessors ---- */
|
||
extern "C" uint32_t beetle_get_cdcmd_trace(uint32_t *out_seq, uint8_t *out_cmd,
|
||
uint8_t *out_nargs, uint8_t *out_a0,
|
||
uint8_t *out_a1, uint8_t *out_a2,
|
||
uint32_t *out_pc,
|
||
int max_count)
|
||
{
|
||
int avail = (int)(s_cdcmd_seq < (uint32_t)BEETLE_CDCMD_TRACE_CAP
|
||
? s_cdcmd_seq : BEETLE_CDCMD_TRACE_CAP);
|
||
int count = max_count < avail ? max_count : avail;
|
||
int start = (s_cdcmd_idx - count + BEETLE_CDCMD_TRACE_CAP) % BEETLE_CDCMD_TRACE_CAP;
|
||
for (int i = 0; i < count; i++) {
|
||
const BeetleCdcmdEntry *e = &s_cdcmd_trace[(start + i) % BEETLE_CDCMD_TRACE_CAP];
|
||
out_seq[i] = e->seq;
|
||
out_cmd[i] = e->cmd;
|
||
out_nargs[i] = e->nargs;
|
||
out_a0[i] = e->a0;
|
||
out_a1[i] = e->a1;
|
||
out_a2[i] = e->a2;
|
||
out_pc[i] = e->pc;
|
||
}
|
||
return (uint32_t)count;
|
||
}
|
||
extern "C" uint32_t beetle_get_cdcmd_trace_total(void) { return s_cdcmd_seq; }
|
||
extern "C" void beetle_reset_cdcmd_trace(void) {
|
||
s_cdcmd_idx = 0;
|
||
s_cdcmd_seq = 0;
|
||
memset(s_cdcmd_trace, 0, sizeof(s_cdcmd_trace));
|
||
}
|
||
|
||
/* ---- wtrace accessors ---- */
|
||
extern "C" int beetle_wtrace_arm(uint32_t lo, uint32_t hi) {
|
||
if (s_wtrace_range_count >= BEETLE_WTRACE_MAX_RANGES) return -1;
|
||
if (lo >= hi) return -2;
|
||
int slot = s_wtrace_range_count++;
|
||
s_wtrace_ranges[slot].lo = lo & 0x1FFFFFFFu;
|
||
s_wtrace_ranges[slot].hi = hi & 0x1FFFFFFFu;
|
||
return slot;
|
||
}
|
||
extern "C" void beetle_wtrace_disarm_all(void) { s_wtrace_range_count = 0; }
|
||
extern "C" int beetle_wtrace_disarm(int slot) {
|
||
if (slot < 0 || slot >= s_wtrace_range_count) return -1;
|
||
/* Compact remaining slots down — matches runtime's wtrace_del semantics. */
|
||
for (int i = slot; i < s_wtrace_range_count - 1; i++)
|
||
s_wtrace_ranges[i] = s_wtrace_ranges[i + 1];
|
||
s_wtrace_range_count--;
|
||
return 0;
|
||
}
|
||
extern "C" int beetle_wtrace_range_count(void) { return s_wtrace_range_count; }
|
||
extern "C" int beetle_wtrace_max_ranges(void) { return BEETLE_WTRACE_MAX_RANGES; }
|
||
extern "C" int beetle_wtrace_capacity(void) { return BEETLE_WTRACE_CAP; }
|
||
extern "C" int beetle_wtrace_get_range(int slot, uint32_t *out_lo, uint32_t *out_hi) {
|
||
if (slot < 0 || slot >= s_wtrace_range_count) return -1;
|
||
*out_lo = s_wtrace_ranges[slot].lo;
|
||
*out_hi = s_wtrace_ranges[slot].hi;
|
||
return 0;
|
||
}
|
||
extern "C" void beetle_wtrace_reset(void) {
|
||
s_wtrace_idx = 0; s_wtrace_seq = 0;
|
||
memset(s_wtrace, 0, sizeof(s_wtrace));
|
||
}
|
||
extern "C" uint64_t beetle_wtrace_total(void) { return s_wtrace_seq; }
|
||
|
||
/* ---- wtrace_all (always-on, no-filter) accessors ---- */
|
||
extern "C" uint64_t beetle_wtrace_all_total(void) { return s_wtrace_all_seq; }
|
||
extern "C" int beetle_wtrace_all_capacity(void) { return BEETLE_WTRACE_ALL_CAP; }
|
||
extern "C" void beetle_wtrace_all_reset(void) {
|
||
s_wtrace_all_idx = 0; s_wtrace_all_seq = 0;
|
||
memset(s_wtrace_all, 0, sizeof(s_wtrace_all));
|
||
}
|
||
extern "C" uint32_t beetle_wtrace_all_get(uint64_t *out_seq, uint32_t *out_addr,
|
||
uint32_t *out_new, uint32_t *out_pc,
|
||
uint32_t *out_ra, uint32_t *out_frame,
|
||
uint8_t *out_w, int max_count)
|
||
{
|
||
int avail = (int)(s_wtrace_all_seq < (uint64_t)BEETLE_WTRACE_ALL_CAP
|
||
? s_wtrace_all_seq : BEETLE_WTRACE_ALL_CAP);
|
||
int count = max_count < avail ? max_count : avail;
|
||
int start = ((int)s_wtrace_all_idx - count + BEETLE_WTRACE_ALL_CAP) % BEETLE_WTRACE_ALL_CAP;
|
||
for (int i = 0; i < count; i++) {
|
||
int idx = (start + i) % BEETLE_WTRACE_ALL_CAP;
|
||
const BeetleWtraceAllEntry *e = &s_wtrace_all[idx];
|
||
out_seq[i] = e->seq;
|
||
out_addr[i] = e->addr;
|
||
out_new[i] = e->new_val;
|
||
out_pc[i] = e->pc;
|
||
out_ra[i] = e->ra;
|
||
out_frame[i] = e->frame;
|
||
out_w[i] = e->w;
|
||
}
|
||
return (uint32_t)count;
|
||
}
|
||
|
||
/* Rich-window accessor. Out-params mirror the runtime's WriteTraceEntry
|
||
* fields, with the documented gaps (old_val, func_addr) absent. */
|
||
extern "C" uint32_t beetle_wtrace_get_rich(uint64_t *out_seq, uint32_t *out_addr,
|
||
uint32_t *out_value, uint32_t *out_pc,
|
||
uint32_t *out_ra,
|
||
uint32_t *out_sp,
|
||
uint32_t *out_v0, uint32_t *out_v1,
|
||
uint32_t *out_a0, uint32_t *out_a1,
|
||
uint32_t *out_a2, uint32_t *out_a3,
|
||
uint32_t *out_t0, uint32_t *out_t1,
|
||
uint32_t *out_frame,
|
||
uint8_t *out_slot, uint8_t *out_size,
|
||
int max_count)
|
||
{
|
||
int avail = (int)(s_wtrace_seq < (uint64_t)BEETLE_WTRACE_CAP
|
||
? s_wtrace_seq : BEETLE_WTRACE_CAP);
|
||
int count = max_count < avail ? max_count : avail;
|
||
int start = ((int)s_wtrace_idx - count + BEETLE_WTRACE_CAP) % BEETLE_WTRACE_CAP;
|
||
for (int i = 0; i < count; i++) {
|
||
int idx = (start + i) % BEETLE_WTRACE_CAP;
|
||
const BeetleWtraceEntry *e = &s_wtrace[idx];
|
||
out_seq[i] = e->seq;
|
||
out_addr[i] = e->addr;
|
||
out_value[i] = e->value;
|
||
out_pc[i] = e->pc;
|
||
out_ra[i] = e->ra;
|
||
out_sp[i] = e->sp;
|
||
out_v0[i] = e->v0; out_v1[i] = e->v1;
|
||
out_a0[i] = e->a0; out_a1[i] = e->a1;
|
||
out_a2[i] = e->a2; out_a3[i] = e->a3;
|
||
out_t0[i] = e->t0; out_t1[i] = e->t1;
|
||
out_frame[i] = e->frame;
|
||
out_slot[i] = e->slot_idx;
|
||
out_size[i] = e->size;
|
||
}
|
||
return (uint32_t)count;
|
||
}
|
||
|
||
|
||
/* ---- fntrace accessors ---- */
|
||
extern "C" int beetle_fntrace_arm(uint32_t target_pc) {
|
||
if (s_fntrace_arm_count >= BEETLE_FNTRACE_MAX_ARMS) return -1;
|
||
uint32_t phys = target_pc & 0x1FFFFFFFu;
|
||
for (int i = 0; i < s_fntrace_arm_count; i++)
|
||
if (s_fntrace_arms[i] == phys) return i;
|
||
int slot = s_fntrace_arm_count++;
|
||
s_fntrace_arms[slot] = phys;
|
||
return slot;
|
||
}
|
||
extern "C" void beetle_fntrace_disarm_all(void) { s_fntrace_arm_count = 0; }
|
||
extern "C" int beetle_fntrace_arm_count(void) { return s_fntrace_arm_count; }
|
||
extern "C" uint32_t beetle_fntrace_get_arm(int slot) {
|
||
if (slot < 0 || slot >= s_fntrace_arm_count) return 0;
|
||
return s_fntrace_arms[slot];
|
||
}
|
||
extern "C" void beetle_fntrace_set_unfiltered(int on) { s_fntrace_unfiltered = on ? 1 : 0; }
|
||
extern "C" void beetle_fntrace_reset(void) {
|
||
s_fntrace_idx = 0; s_fntrace_seq = 0;
|
||
memset(s_fntrace, 0, sizeof(s_fntrace));
|
||
}
|
||
extern "C" uint64_t beetle_fntrace_total(void) { return s_fntrace_seq; }
|
||
|
||
/* ---- SPU event ring (always-on, mirrors recomp's spu_events).
|
||
*
|
||
* Beetle's spu.cpp calls psxrecomp_beetle_spu_event() at every transition
|
||
* we care about: KEYON, KEYOFF, END_STOP (loop-end-no-repeat), END_LOOP
|
||
* (loop-end-with-repeat). Each entry stamps frame + voice + envelope
|
||
* level + sample address, so the boot-chime timeline can be diffed
|
||
* directly against recomp's port-4370 spu_events output. */
|
||
/* 1M entries × ~32 B = 32 MB. Sized for full boot-chime capture plus
|
||
* minutes of in-game timeline; mirrors recomp's SPU_EVENT_CAP exactly. */
|
||
#define BEETLE_SPU_EVENT_CAP (1u << 20)
|
||
struct BeetleSpuEvent {
|
||
uint64_t seq;
|
||
uint32_t frame;
|
||
uint32_t addr;
|
||
uint16_t env;
|
||
uint16_t pitch;
|
||
uint16_t vol_l_ctrl;
|
||
uint16_t vol_r_ctrl;
|
||
uint16_t adsr_lo;
|
||
uint16_t adsr_hi;
|
||
uint8_t kind; /* 1=KEYON 2=KEYOFF 3=END_STOP 4=END_LOOP */
|
||
uint8_t voice;
|
||
};
|
||
static BeetleSpuEvent s_spu_events[BEETLE_SPU_EVENT_CAP];
|
||
static uint32_t s_spu_event_idx = 0;
|
||
static uint64_t s_spu_event_seq = 0;
|
||
|
||
extern "C" void psxrecomp_beetle_spu_event(unsigned kind, unsigned voice,
|
||
unsigned addr, unsigned env)
|
||
{
|
||
/* Snapshot the per-voice raw control registers via PS_SPU peek so the
|
||
* payload is structurally identical to recomp's SpuEvent. */
|
||
BeetleSpuEvent *e = &s_spu_events[s_spu_event_idx & (BEETLE_SPU_EVENT_CAP - 1u)];
|
||
e->seq = s_spu_event_seq++;
|
||
e->frame = s_frame_count;
|
||
e->addr = addr;
|
||
e->env = (uint16_t)env;
|
||
e->kind = (uint8_t)kind;
|
||
e->voice = (uint8_t)voice;
|
||
if (PSX_SPU && voice < 24u) {
|
||
char dummy[32]; const uint32_t dl = sizeof(dummy);
|
||
unsigned base = 0x8000u | ((unsigned)voice << 8);
|
||
e->pitch = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_PITCH & 0xFF), dummy, dl);
|
||
e->vol_l_ctrl = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_VOL_CTRL_L & 0xFF), dummy, dl);
|
||
e->vol_r_ctrl = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_VOL_CTRL_R & 0xFF), dummy, dl);
|
||
unsigned ctrl = PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_ADSR_CTRL & 0xFF), dummy, dl);
|
||
e->adsr_lo = (uint16_t)(ctrl & 0xFFFFu);
|
||
e->adsr_hi = (uint16_t)((ctrl >> 16) & 0xFFFFu);
|
||
} else {
|
||
e->pitch = e->vol_l_ctrl = e->vol_r_ctrl = e->adsr_lo = e->adsr_hi = 0;
|
||
}
|
||
s_spu_event_idx++;
|
||
}
|
||
|
||
extern "C" uint64_t beetle_spu_event_total(void) { return s_spu_event_seq; }
|
||
|
||
extern "C" uint32_t beetle_spu_event_get(uint64_t *out_seq, uint32_t *out_frame,
|
||
uint32_t *out_addr, uint16_t *out_env,
|
||
uint16_t *out_pitch,
|
||
uint16_t *out_vol_l, uint16_t *out_vol_r,
|
||
uint16_t *out_adsr_lo, uint16_t *out_adsr_hi,
|
||
uint8_t *out_kind, uint8_t *out_voice,
|
||
uint32_t max_count)
|
||
{
|
||
uint64_t avail = s_spu_event_seq < (uint64_t)BEETLE_SPU_EVENT_CAP
|
||
? s_spu_event_seq : (uint64_t)BEETLE_SPU_EVENT_CAP;
|
||
if ((uint64_t)max_count > avail) max_count = (uint32_t)avail;
|
||
uint32_t start = (s_spu_event_idx + BEETLE_SPU_EVENT_CAP - max_count) & (BEETLE_SPU_EVENT_CAP - 1u);
|
||
for (uint32_t i = 0; i < max_count; i++) {
|
||
const BeetleSpuEvent *e = &s_spu_events[(start + i) & (BEETLE_SPU_EVENT_CAP - 1u)];
|
||
out_seq[i] = e->seq;
|
||
out_frame[i] = e->frame;
|
||
out_addr[i] = e->addr;
|
||
out_env[i] = e->env;
|
||
out_pitch[i] = e->pitch;
|
||
out_vol_l[i] = e->vol_l_ctrl;
|
||
out_vol_r[i] = e->vol_r_ctrl;
|
||
out_adsr_lo[i] = e->adsr_lo;
|
||
out_adsr_hi[i] = e->adsr_hi;
|
||
out_kind[i] = e->kind;
|
||
out_voice[i] = e->voice;
|
||
}
|
||
return max_count;
|
||
}
|
||
|
||
/* ---- SPU register peeks via PS_SPU::GetRegister ----
|
||
*
|
||
* Mirrors the spu_voices wire protocol psx-runtime exposes on port 4370
|
||
* so cross-process diff tooling sees the same JSON schema on both ports.
|
||
* Beetle's SPU keeps full ADSR, sweep volumes, distinct StartAddr/CurAddr/
|
||
* LoopAddr, and a real BlockEnd latch — so this is the oracle ground truth
|
||
* for "is voice v actually voicing right now and where in the sample?"
|
||
*/
|
||
extern "C" int beetle_spu_get_voice_state(int v,
|
||
uint16_t *vol_ctrl_l, uint16_t *vol_ctrl_r,
|
||
uint16_t *vol_l, uint16_t *vol_r,
|
||
uint16_t *pitch,
|
||
uint32_t *start_addr, uint32_t *cur_addr, uint32_t *loop_addr,
|
||
uint32_t *adsr_ctrl, uint16_t *adsr_level)
|
||
{
|
||
if (v < 0 || v >= 24 || !PSX_SPU) return 0;
|
||
unsigned base = 0x8000u | ((unsigned)v << 8);
|
||
char dummy[32]; const uint32_t dl = sizeof(dummy);
|
||
*vol_ctrl_l = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_VOL_CTRL_L & 0xFF), dummy, dl);
|
||
*vol_ctrl_r = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_VOL_CTRL_R & 0xFF), dummy, dl);
|
||
*vol_l = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_VOL_L & 0xFF), dummy, dl);
|
||
*vol_r = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_VOL_R & 0xFF), dummy, dl);
|
||
*pitch = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_PITCH & 0xFF), dummy, dl);
|
||
*start_addr = PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_STARTADDR & 0xFF), dummy, dl);
|
||
*cur_addr = PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_READ_ADDR & 0xFF), dummy, dl);
|
||
*loop_addr = PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_LOOP_ADDR & 0xFF), dummy, dl);
|
||
*adsr_ctrl = PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_ADSR_CTRL & 0xFF), dummy, dl);
|
||
*adsr_level = (uint16_t)PSX_SPU->GetRegister(base + (PS_SPU::GSREG_V0_ADSR_LEVEL & 0xFF), dummy, dl);
|
||
return 1;
|
||
}
|
||
|
||
extern "C" int beetle_spu_get_global_state(
|
||
uint16_t *spu_ctrl,
|
||
uint16_t *main_vol_ctrl_l, uint16_t *main_vol_ctrl_r,
|
||
uint16_t *main_vol_l, uint16_t *main_vol_r,
|
||
uint32_t *fm_mode, uint32_t *noise_mode, uint32_t *reverb_mode,
|
||
uint32_t *voice_on, uint32_t *voice_off, uint32_t *block_end)
|
||
{
|
||
if (!PSX_SPU) return 0;
|
||
char dummy[32]; const uint32_t dl = sizeof(dummy);
|
||
*spu_ctrl = (uint16_t)PSX_SPU->GetRegister(PS_SPU::GSREG_SPUCONTROL, dummy, dl);
|
||
*main_vol_ctrl_l = (uint16_t)PSX_SPU->GetRegister(PS_SPU::GSREG_MAINVOL_CTRL_L, dummy, dl);
|
||
*main_vol_ctrl_r = (uint16_t)PSX_SPU->GetRegister(PS_SPU::GSREG_MAINVOL_CTRL_R, dummy, dl);
|
||
*main_vol_l = (uint16_t)PSX_SPU->GetRegister(PS_SPU::GSREG_MAINVOL_L, dummy, dl);
|
||
*main_vol_r = (uint16_t)PSX_SPU->GetRegister(PS_SPU::GSREG_MAINVOL_R, dummy, dl);
|
||
*fm_mode = PSX_SPU->GetRegister(PS_SPU::GSREG_FM_ON, dummy, dl);
|
||
*noise_mode = PSX_SPU->GetRegister(PS_SPU::GSREG_NOISE_ON, dummy, dl);
|
||
*reverb_mode = PSX_SPU->GetRegister(PS_SPU::GSREG_REVERB_ON, dummy, dl);
|
||
*voice_on = PSX_SPU->GetRegister(PS_SPU::GSREG_VOICEON, dummy, dl);
|
||
*voice_off = PSX_SPU->GetRegister(PS_SPU::GSREG_VOICEOFF, dummy, dl);
|
||
*block_end = PSX_SPU->GetRegister(PS_SPU::GSREG_BLOCKEND, dummy, dl);
|
||
return 1;
|
||
}
|
||
|
||
extern "C" uint32_t beetle_fntrace_get(uint64_t *out_seq,
|
||
uint32_t *out_caller, uint32_t *out_target,
|
||
uint32_t *out_ra, uint32_t *out_a0,
|
||
uint32_t *out_a1, uint32_t *out_frame,
|
||
uint8_t *out_kind, uint32_t *out_sp,
|
||
int max_count)
|
||
{
|
||
int avail = (int)(s_fntrace_seq < (uint64_t)BEETLE_FNTRACE_CAP
|
||
? s_fntrace_seq : BEETLE_FNTRACE_CAP);
|
||
int count = max_count < avail ? max_count : avail;
|
||
int start = ((int)s_fntrace_idx - count + BEETLE_FNTRACE_CAP) % BEETLE_FNTRACE_CAP;
|
||
for (int i = 0; i < count; i++) {
|
||
int idx = (start + i) % BEETLE_FNTRACE_CAP;
|
||
const BeetleFnTraceEntry *e = &s_fntrace[idx];
|
||
out_seq[i] = e->seq;
|
||
out_caller[i] = e->caller_pc;
|
||
out_target[i] = e->target_pc;
|
||
out_ra[i] = e->parent_ra;
|
||
out_a0[i] = e->a0;
|
||
out_a1[i] = e->a1;
|
||
out_frame[i] = e->frame;
|
||
out_kind[i] = e->kind;
|
||
out_sp[i] = e->sp;
|
||
}
|
||
return (uint32_t)count;
|
||
}
|
||
|
||
/* ====================================================================== */
|
||
/* ==================== PER-FRAME HISTORY RING ======================== */
|
||
/* ====================================================================== */
|
||
/* Mirrors runtime/src/debug_server.c's s_frame_history. Same capacity,
|
||
* same recording cadence (post-frame), same snapshot model
|
||
* (4 configurable regions × 128 bytes per frame).
|
||
*
|
||
* Why duplicate the runtime's mechanism instead of sharing code: psx-beetle
|
||
* has no recompiler CPUState; it reads MIPS state via PSX_CPU::GetRegister
|
||
* and RAM via the MainRAM byte array. The runtime's recorder reads s_cpu
|
||
* (recomp CPUState) and psx_read_byte. Different sources, same wire shape. */
|
||
|
||
static BeetleFrameRecord *s_beetle_history = nullptr;
|
||
static uint64_t s_beetle_history_count = 0;
|
||
static uint32_t s_beetle_snap_addrs[BEETLE_RAM_SNAPSHOT_REGIONS];
|
||
static int s_beetle_snap_active[BEETLE_RAM_SNAPSHOT_REGIONS];
|
||
|
||
extern "C" void beetle_history_init(void) {
|
||
if (s_beetle_history) return;
|
||
s_beetle_history = (BeetleFrameRecord *)std::calloc(
|
||
BEETLE_FRAME_HISTORY_CAP, sizeof(BeetleFrameRecord));
|
||
s_beetle_history_count = 0;
|
||
std::memset(s_beetle_snap_addrs, 0, sizeof(s_beetle_snap_addrs));
|
||
std::memset(s_beetle_snap_active, 0, sizeof(s_beetle_snap_active));
|
||
if (!s_beetle_history) {
|
||
std::fprintf(stderr,
|
||
"[psx-beetle] WARNING: failed to allocate %u-frame history ring\n",
|
||
(unsigned)BEETLE_FRAME_HISTORY_CAP);
|
||
}
|
||
}
|
||
|
||
extern "C" void beetle_history_record_frame(void) {
|
||
if (!s_beetle_history || !PSX_CPU) return;
|
||
|
||
uint32_t idx = (uint32_t)(s_frame_count % BEETLE_FRAME_HISTORY_CAP);
|
||
BeetleFrameRecord *r = &s_beetle_history[idx];
|
||
|
||
r->frame_number = s_frame_count;
|
||
r->verify_pass = -1; /* no cross-check verify mode on beetle */
|
||
r->diff_count = 0;
|
||
|
||
/* MIPS CPU state via PS_CPU::GetRegister. The `special` buffer is
|
||
* unused by the GPR/HI/LO/COP0-SR/CAUSE/EPC paths in cpu.cpp, but
|
||
* we pass a real backing array so future register kinds that DO
|
||
* print into it can't smash the stack. */
|
||
char dummy[64] = {0};
|
||
for (int i = 0; i < 32; i++) {
|
||
r->gpr[i] = PSX_CPU->GetRegister(
|
||
(unsigned)(PS_CPU::GSREG_GPR + i), dummy, sizeof(dummy));
|
||
}
|
||
r->hi = PSX_CPU->GetRegister(PS_CPU::GSREG_HI, dummy, sizeof(dummy));
|
||
r->lo = PSX_CPU->GetRegister(PS_CPU::GSREG_LO, dummy, sizeof(dummy));
|
||
r->cop0_sr = PSX_CPU->GetRegister(PS_CPU::GSREG_SR, dummy, sizeof(dummy));
|
||
r->cop0_cause = PSX_CPU->GetRegister(PS_CPU::GSREG_CAUSE, dummy, sizeof(dummy));
|
||
r->cop0_epc = PSX_CPU->GetRegister(PS_CPU::GSREG_EPC, dummy, sizeof(dummy));
|
||
|
||
/* Interrupt controller. */
|
||
r->i_stat = IRQ_GetRegister(IRQ_GSREG_STATUS, dummy, sizeof(dummy));
|
||
r->i_mask = IRQ_GetRegister(IRQ_GSREG_MASK, dummy, sizeof(dummy));
|
||
|
||
/* GPU display state. PS_GPU's fields are public. We snapshot the
|
||
* raw register-level XStart/YStart for origin; framebuffer width/height
|
||
* already mirrored by on_video_refresh into s_fb_*. */
|
||
r->display_area_x = (uint16_t)GPU.DisplayFB_XStart;
|
||
r->display_area_y = (uint16_t)GPU.DisplayFB_YStart;
|
||
r->display_w = (uint16_t)s_fb_width;
|
||
r->display_h = (uint16_t)s_fb_height;
|
||
r->display_disabled = GPU.DisplayOff ? 1 : 0;
|
||
|
||
/* SIO / pad. pad_buttons follows runtime convention (active-low
|
||
* 16-bit mask). sio_stat/sio_ctrl left zero; beetle's libretro
|
||
* surface doesn't expose them and inventing values would obscure
|
||
* real divergences in the time-series. */
|
||
r->pad_buttons = s_joypad;
|
||
r->sio_stat = 0;
|
||
r->sio_ctrl = 0;
|
||
|
||
/* Timing: beetle has no dispatch table to count gates. Leave zero
|
||
* dispatch_count; total_dispatches = frame# so the field is
|
||
* monotonic and frame_timeseries can still graph it. */
|
||
r->dispatch_count = 0;
|
||
r->total_dispatches = s_frame_count;
|
||
|
||
/* Per-frame configurable RAM snapshot regions. */
|
||
for (int i = 0; i < BEETLE_RAM_SNAPSHOT_REGIONS; i++) {
|
||
r->snapshot_addr[i] = s_beetle_snap_addrs[i];
|
||
if (s_beetle_snap_active[i] && s_beetle_snap_addrs[i] != 0 && MainRAM) {
|
||
uint32_t base = s_beetle_snap_addrs[i] & 0x1FFFFFu;
|
||
for (int j = 0; j < BEETLE_RAM_SNAPSHOT_SIZE; j++) {
|
||
uint32_t off = (base + (uint32_t)j) & 0x1FFFFFu;
|
||
r->snapshot_data[i][j] = MainRAM->data8[off];
|
||
}
|
||
} else {
|
||
std::memset(r->snapshot_data[i], 0, BEETLE_RAM_SNAPSHOT_SIZE);
|
||
}
|
||
}
|
||
|
||
s_beetle_history_count = (uint64_t)s_frame_count + 1;
|
||
}
|
||
|
||
extern "C" void beetle_history_get_bounds(uint64_t *out_count,
|
||
uint64_t *out_oldest,
|
||
uint64_t *out_newest)
|
||
{
|
||
uint64_t cnt = s_beetle_history_count;
|
||
uint64_t oldest = (cnt > BEETLE_FRAME_HISTORY_CAP)
|
||
? cnt - BEETLE_FRAME_HISTORY_CAP : 0;
|
||
uint64_t newest = (cnt > 0) ? cnt - 1 : 0;
|
||
if (out_count) *out_count = cnt;
|
||
if (out_oldest) *out_oldest = oldest;
|
||
if (out_newest) *out_newest = newest;
|
||
}
|
||
|
||
extern "C" const BeetleFrameRecord *beetle_history_get_frame(uint32_t frame) {
|
||
if (!s_beetle_history) return nullptr;
|
||
uint64_t cnt = s_beetle_history_count;
|
||
uint64_t oldest = (cnt > BEETLE_FRAME_HISTORY_CAP)
|
||
? cnt - BEETLE_FRAME_HISTORY_CAP : 0;
|
||
if ((uint64_t)frame < oldest || (uint64_t)frame >= cnt) return nullptr;
|
||
|
||
uint32_t idx = frame % BEETLE_FRAME_HISTORY_CAP;
|
||
const BeetleFrameRecord *r = &s_beetle_history[idx];
|
||
if (r->frame_number != frame) return nullptr; /* slot reused since */
|
||
return r;
|
||
}
|
||
|
||
extern "C" int beetle_history_first_failure(uint32_t *out_frame, int *out_diff_count) {
|
||
/* No verify-mode on beetle yet; mirrors runtime's "no failures" path. */
|
||
if (out_frame) *out_frame = (uint32_t)-1;
|
||
if (out_diff_count) *out_diff_count = 0;
|
||
return 0;
|
||
}
|
||
|
||
extern "C" int beetle_history_set_snapshot(int slot, uint32_t addr) {
|
||
if (slot < 0 || slot >= BEETLE_RAM_SNAPSHOT_REGIONS) return 0;
|
||
s_beetle_snap_addrs[slot] = addr;
|
||
s_beetle_snap_active[slot] = (addr != 0) ? 1 : 0;
|
||
return 1;
|
||
}
|
||
|
||
extern "C" int beetle_history_get_snapshot(int slot, uint32_t *out_addr, int *out_active) {
|
||
if (slot < 0 || slot >= BEETLE_RAM_SNAPSHOT_REGIONS) return 0;
|
||
if (out_addr) *out_addr = s_beetle_snap_addrs[slot];
|
||
if (out_active) *out_active = s_beetle_snap_active[slot];
|
||
return 1;
|
||
}
|