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gdb support for user mode (Paul Brook)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1367 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-04-17 19:16:13 +00:00
parent 6e4255f6a6
commit 1fddef4b1b
14 changed files with 265 additions and 29 deletions
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69
linux-user/main.c
View file

@ -278,6 +278,20 @@ void cpu_loop(CPUX86State *env)
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(info.si_signo, &info);
}
}
break;
default:
pc = env->segs[R_CS].base + env->eip;
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
@ -379,6 +393,20 @@ void cpu_loop(CPUARMState *env)
queue_signal(info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(info.si_signo, &info);
}
}
break;
default:
error:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
@ -529,6 +557,20 @@ void cpu_loop (CPUSPARCState *env)
break;
case 0x100: // XXX, why do we get these?
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
@ -911,8 +953,20 @@ void cpu_loop(CPUPPCState *env)
case EXCP_INTERRUPT:
/* Don't know why this should ever happen... */
break;
case EXCP_DEBUG:
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(info.si_signo, &info);
}
}
break;
default:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
@ -930,10 +984,11 @@ void cpu_loop(CPUPPCState *env)
void usage(void)
{
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
"usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
"usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] program [arguments...]\n"
"Linux CPU emulator (compiled for %s emulation)\n"
"\n"
"-h print this help\n"
"-g wait gdb connection to port %d\n"
"-L path set the elf interpreter prefix (default=%s)\n"
"-s size set the stack size in bytes (default=%ld)\n"
"\n"
@ -944,6 +999,7 @@ void usage(void)
"-d options activate log (logfile=%s)\n"
"-p pagesize set the host page size to 'pagesize'\n",
TARGET_ARCH,
DEFAULT_GDBSTUB_PORT,
interp_prefix,
x86_stack_size,
DEBUG_LOGFILE);
@ -967,6 +1023,7 @@ int main(int argc, char **argv)
CPUState *env;
int optind;
const char *r;
int use_gdbstub = 0;
if (argc <= 1)
usage();
@ -1020,6 +1077,8 @@ int main(int argc, char **argv)
fprintf(stderr, "page size must be a power of two\n");
exit(1);
}
} else if (!strcmp(r, "g")) {
use_gdbstub = 1;
} else
#ifdef USE_CODE_COPY
if (!strcmp(r, "no-code-copy")) {
@ -1176,6 +1235,10 @@ int main(int argc, char **argv)
#error unsupported target CPU
#endif
if (use_gdbstub) {
gdbserver_start (DEFAULT_GDBSTUB_PORT);
gdb_handlesig(env, 0);
}
cpu_loop(env);
/* never exits */
return 0;