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/*****************************************************************************
* Copyright (c) 2016 Laurent Vivier
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*****************************************************************************/
#include <stdio.h>
#include <ucontext.h>
#include <string.h>
#include <math.h>
#include "risu.h"
#include "risu_reginfo_m68k.h"
/* reginfo_init: initialize with a ucontext */
void reginfo_init(struct reginfo *ri, ucontext_t *uc)
{
int i;
memset(ri, 0, sizeof(*ri));
ri->faulting_insn = *((uint32_t *)uc->uc_mcontext.gregs[R_PC]);
ri->pc = uc->uc_mcontext.gregs[R_PC] - image_start_address;
for (i = 0; i < NGREG; i++) {
ri->gregs[i] = uc->uc_mcontext.gregs[i];
}
ri->fpregs.f_pcr = uc->uc_mcontext.fpregs.f_pcr;
ri->fpregs.f_psr = uc->uc_mcontext.fpregs.f_psr;
ri->fpregs.f_fpiaddr = uc->uc_mcontext.fpregs.f_fpiaddr;
for (i = 0; i < 8; i++) {
memcpy(ri->fpregs.f_fpregs[i],
uc->uc_mcontext.fpregs.f_fpregs[i],
sizeof(ri->fpregs.f_fpregs[0]));
}
}
/* reginfo_is_eq: compare the reginfo structs, returns nonzero if equal */
int reginfo_is_eq(struct reginfo *m, struct reginfo *a, ucontext_t *uc)
{
int i;
if (m->gregs[R_PS] != a->gregs[R_PS]) {
return 0;
}
for (i = 0; i < 16; i++) {
if (i == R_SP || i == R_A6) {
continue;
}
if (m->gregs[i] != a->gregs[i]) {
return 0;
}
}
if (m->fpregs.f_pcr != a->fpregs.f_pcr) {
return 0;
}
if (m->fpregs.f_psr != a->fpregs.f_psr) {
return 0;
}
for (i = 0; i < 8; i++) {
if (m->fpregs.f_fpregs[i][0] != a->fpregs.f_fpregs[i][0] ||
m->fpregs.f_fpregs[i][1] != a->fpregs.f_fpregs[i][1] ||
m->fpregs.f_fpregs[i][2] != a->fpregs.f_fpregs[i][2]) {
return 0;
}
}
return 1;
}
/* reginfo_dump: print state to a stream, returns nonzero on success */
void reginfo_dump(struct reginfo *ri, int is_master)
{
int i;
if (is_master) {
fprintf(stderr, " pc \e[1;101;37m0x%08x\e[0m\n",
ri->pc);
}
fprintf(stderr, "\tPC: %08x\n", ri->gregs[R_PC]);
fprintf(stderr, "\tPS: %04x\n", ri->gregs[R_PS]);
for (i = 0; i < 8; i++) {
fprintf(stderr, "\tD%d: %8x\tA%d: %8x\n", i, ri->gregs[i],
i, ri->gregs[i + 8]);
}
for (i = 0; i < 8; i++) {
fprintf(stderr, "\tFP%d: %08x %08x %08x\n", i,
ri->fpregs.f_fpregs[i][0], ri->fpregs.f_fpregs[i][1],
ri->fpregs.f_fpregs[i][2]);
}
fprintf(stderr, "\n");
}
int reginfo_dump_mismatch(struct reginfo *m, struct reginfo *a, FILE *f)
{
int i;
if (m->gregs[R_PS] != a->gregs[R_PS]) {
fprintf(f, "Mismatch: Register PS\n");
fprintf(f, "master: [%x] - apprentice: [%x]\n",
m->gregs[R_PS], a->gregs[R_PS]);
}
for (i = 0; i < 16; i++) {
if (i == R_SP || i == R_A6) {
continue;
}
if (m->gregs[i] != a->gregs[i]) {
fprintf(f, "Mismatch: Register %c%d\n", i < 8 ? 'D' : 'A', i % 8);
fprintf(f, "master: [%x] - apprentice: [%x]\n",
m->gregs[i], a->gregs[i]);
}
}
if (m->fpregs.f_pcr != a->fpregs.f_pcr) {
fprintf(f, "Mismatch: Register FPCR\n");
fprintf(f, "m: [%04x] != a: [%04x]\n",
m->fpregs.f_pcr, a->fpregs.f_pcr);
}
if (m->fpregs.f_psr != a->fpregs.f_psr) {
fprintf(f, "Mismatch: Register FPSR\n");
fprintf(f, "m: [%08x] != a: [%08x]\n",
m->fpregs.f_psr, a->fpregs.f_psr);
}
for (i = 0; i < 8; i++) {
if (m->fpregs.f_fpregs[i][0] != a->fpregs.f_fpregs[i][0] ||
m->fpregs.f_fpregs[i][1] != a->fpregs.f_fpregs[i][1] ||
m->fpregs.f_fpregs[i][2] != a->fpregs.f_fpregs[i][2]) {
fprintf(f, "Mismatch: Register FP%d\n", i);
fprintf(f, "m: [%08x %08x %08x] != a: [%08x %08x %08x]\n",
m->fpregs.f_fpregs[i][0], m->fpregs.f_fpregs[i][1],
m->fpregs.f_fpregs[i][2], a->fpregs.f_fpregs[i][0],
a->fpregs.f_fpregs[i][1], a->fpregs.f_fpregs[i][2]);
}
}
return !ferror(f);
}
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