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simplified PowerPC exception handling (Jocelyn Mayer)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1492 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-07-02 22:09:27 +00:00
parent f68c781c2d
commit 2be0071f22
7 changed files with 484 additions and 226 deletions
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45
linux-user/main.c
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@ -706,28 +706,22 @@ void cpu_loop(CPUPPCState *env)
fprintf(logfile, "Invalid data memory access: 0x%08x\n",
env->spr[SPR_DAR]);
}
switch (env->error_code & 0xF) {
case EXCP_DSI_TRANSLATE:
switch (env->error_code & 0xFF000000) {
case 0x40000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
case EXCP_DSI_NOTSUP:
case EXCP_DSI_EXTERNAL:
case 0x04000000:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLADR;
break;
case EXCP_DSI_PROT:
case 0x08000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_ACCERR;
break;
case EXCP_DSI_DABR:
info.si_signo = TARGET_SIGTRAP;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
break;
default:
/* Let's send a regular segfault... */
fprintf(stderr, "Invalid segfault errno (%02x)\n",
@ -748,19 +742,14 @@ void cpu_loop(CPUPPCState *env)
fprintf(stderr, "Invalid instruction fetch\n");
if (loglevel)
fprintf(logfile, "Invalid instruction fetch\n");
switch (env->error_code) {
case EXCP_ISI_TRANSLATE:
switch (env->error_code & 0xFF000000) {
case 0x40000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
case EXCP_ISI_GUARD:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLADR;
break;
case EXCP_ISI_NOEXEC:
case EXCP_ISI_PROT:
case 0x10000000:
case 0x08000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_ACCERR;
@ -930,18 +919,6 @@ void cpu_loop(CPUPPCState *env)
if (loglevel)
fprintf(logfile, "Decrementer exception\n");
abort();
case EXCP_RESA: /* Implementation specific */
/* Should not happen ! */
fprintf(stderr, "RESA exception should never happen !\n");
if (loglevel)
fprintf(logfile, "RESA exception should never happen !\n");
abort();
case EXCP_RESB: /* Implementation specific */
/* Should not happen ! */
fprintf(stderr, "RESB exception should never happen !\n");
if (loglevel)
fprintf(logfile, "RESB exception should never happen !\n");
abort();
case EXCP_TRACE:
/* Do nothing: we use this to trace execution */
break;
@ -963,12 +940,6 @@ void cpu_loop(CPUPPCState *env)
case EXCP_BRANCH:
/* We stopped because of a jump... */
break;
case EXCP_RFI:
/* Should not occur: we always are in user mode */
fprintf(stderr, "Return from interrupt ?\n");
if (loglevel)
fprintf(logfile, "Return from interrupt ?\n");
abort();
case EXCP_INTERRUPT:
/* Don't know why this should ever happen... */
break;