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https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
drc: lots of new debug code
This commit is contained in:
notaz
parent
d3524932fa
commit
00faec9cdb
10 changed files with 399 additions and 153 deletions
194
cpu/sh2/sh2.c
194
cpu/sh2/sh2.c
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@ -57,8 +57,7 @@ void sh2_do_irq(SH2 *sh2, int level, int vector)
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sh2->pc = p32x_sh2_read32(sh2->vbr + vector * 4, sh2);
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/* 13 cycles at best */
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sh2->m68krcycles_done += C_SH2_TO_M68K(*sh2, 13);
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// sh2->icount -= 13;
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sh2->icount -= 13;
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}
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int sh2_irl_irq(SH2 *sh2, int level, int nested_call)
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@ -77,6 +76,7 @@ int sh2_irl_irq(SH2 *sh2, int level, int nested_call)
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// do this to avoid missing irqs that other SH2 might clear
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int vector = sh2->irq_callback(sh2, level);
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sh2_do_irq(sh2, level, vector);
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sh2->m68krcycles_done += C_SH2_TO_M68K(*sh2, 13);
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}
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else
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sh2->test_irq = 1;
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@ -120,3 +120,193 @@ void sh2_unpack(SH2 *sh2, const unsigned char *buff)
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sh2->pending_int_vector = p[1];
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}
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#ifdef DRC_CMP
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/* trace/compare */
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#include <stdio.h>
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#include <stdlib.h>
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#include <pico/memory.h>
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static SH2 sh2ref[2];
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static int current_slave = -1;
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static unsigned int mem_val;
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static FILE *f;
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#define SH2MAP_ADDR2OFFS_R(a) \
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((((a) >> 25) & 3) | (((a) >> 27) & 0x1c))
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static unsigned int local_read32(SH2 *sh2, u32 a)
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{
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const sh2_memmap *sh2_map = sh2->read16_map;
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uptr p;
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sh2_map += SH2MAP_ADDR2OFFS_R(a);
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p = sh2_map->addr;
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if (!map_flag_set(p)) {
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u16 *pd = (u16 *)((p << 1) + ((a & sh2_map->mask) & ~3));
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return (pd[0] << 16) | pd[1];
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}
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return 0;
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}
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static void write_uint(unsigned char ctl, unsigned int v)
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{
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fwrite(&ctl, 1, 1, f);
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fwrite(&v, sizeof(v), 1, f);
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}
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void do_sh2_trace(SH2 *current, int cycles)
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{
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SH2 *sh2o = &sh2ref[current->is_slave];
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u32 *regs_a = (void *)current;
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u32 *regs_o = (void *)sh2o;
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unsigned char v;
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u32 val;
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int i;
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if (f == NULL)
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f = fopen("tracelog", "wb");
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if (current->is_slave != current_slave) {
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current_slave = current->is_slave;
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v = 0x80 | current->is_slave;
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fwrite(&v, 1, 1, f);
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}
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for (i = 0; i < offsetof(SH2, read8_map) / 4; i++) {
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if (i == 17) // ppc
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continue;
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if (regs_a[i] != regs_o[i]) {
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write_uint(i, regs_a[i]);
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regs_o[i] = regs_a[i];
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}
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}
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if (current->ea != sh2o->ea) {
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write_uint(0x82, current->ea);
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sh2o->ea = current->ea;
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}
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val = local_read32(current, current->ea);
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if (mem_val != val) {
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write_uint(0x83, val);
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mem_val = val;
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}
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write_uint(0x84, cycles);
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}
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static const char *regnames[] = {
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"r0", "r1", "r2", "r3",
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"r4", "r5", "r6", "r7",
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"r8", "r9", "r10", "r11",
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"r12", "r13", "r14", "r15",
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"pc", "ppc", "pr", "sr",
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"gbr", "vbr", "mach","macl",
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};
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void do_sh2_cmp(SH2 *current)
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{
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static int current_slave;
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static u32 current_val;
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SH2 *sh2o = &sh2ref[current->is_slave];
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u32 *regs_a = (void *)current;
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u32 *regs_o = (void *)sh2o;
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unsigned char code;
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int cycles_o = 666;
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u32 sr, val;
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int bad = 0;
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int cycles;
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int i, ret;
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char csh2;
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if (f == NULL)
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f = fopen("tracelog", "rb");
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while (1) {
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ret = fread(&code, 1, 1, f);
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if (ret <= 0)
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break;
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if (code == 0x84) {
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fread(&cycles_o, 1, 4, f);
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break;
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}
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switch (code) {
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case 0x80:
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case 0x81:
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current_slave = code & 1;
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break;
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case 0x82:
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fread(&sh2o->ea, 4, 1, f);
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break;
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case 0x83:
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fread(¤t_val, 4, 1, f);
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break;
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default:
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if (code < offsetof(SH2, read8_map) / 4)
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fread(regs_o + code, 4, 1, f);
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else {
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printf("invalid code: %02x\n", code);
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goto end;
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}
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break;
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}
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}
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if (ret <= 0) {
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printf("EOF?\n");
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goto end;
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}
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if (current->is_slave != current_slave) {
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printf("bad slave: %d %d\n", current->is_slave,
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current_slave);
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bad = 1;
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}
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for (i = 0; i < offsetof(SH2, read8_map) / 4; i++) {
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if (i == 17 || i == 19) // ppc, sr
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continue;
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if (regs_a[i] != regs_o[i]) {
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printf("bad %4s: %08x %08x\n",
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regnames[i], regs_a[i], regs_o[i]);
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bad = 1;
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}
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}
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sr = current->sr & 0x3f3;
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cycles = (signed int)current->sr >> 12;
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if (sr != sh2o->sr) {
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printf("bad SR: %03x %03x\n", sr, sh2o->sr);
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bad = 1;
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}
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if (cycles != cycles_o) {
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printf("bad cycles: %d %d\n", cycles, cycles_o);
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bad = 1;
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}
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val = local_read32(current, sh2o->ea);
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if (val != current_val) {
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printf("bad val @%08x: %08x %08x\n", sh2o->ea, val, current_val);
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bad = 1;
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}
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if (!bad) {
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sh2o->ppc = current->pc;
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return;
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}
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end:
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printf("--\n");
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csh2 = current->is_slave ? 's' : 'm';
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for (i = 0; i < 16/2; i++)
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printf("%csh2 r%d: %08x r%02d: %08x\n", csh2,
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i, sh2o->r[i], i+8, sh2o->r[i+8]);
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printf("%csh2 PC: %08x , %08x\n", csh2, sh2o->pc, sh2o->ppc);
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printf("%csh2 SR: %03x PR: %08x\n", csh2, sh2o->sr, sh2o->pr);
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exit(1);
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}
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#endif // DRC_CMP
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