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sim: add syscall tracing level

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It's useful to be able to trace just the system calls the simulated
program is calling, so add a new --trace-syscall option for ports to
leverage if they choose.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger
2011-05-26 00:09:59 +00:00
parent 39f8b7c1fa
commit 3a49ea9fac
3 changed files with 30 additions and 1 deletions
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14
sim/common/sim-trace.c
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@ -77,7 +77,8 @@ enum {
OPTION_TRACE_FUNCTION,
OPTION_TRACE_DEBUG,
OPTION_TRACE_FILE,
OPTION_TRACE_VPU
OPTION_TRACE_VPU,
OPTION_TRACE_SYSCALL
};
static const OPTION trace_options[] =
@ -125,6 +126,9 @@ static const OPTION trace_options[] =
{ {"trace-events", optional_argument, NULL, OPTION_TRACE_EVENTS},
'\0', "on|off", "Trace events",
trace_option_handler, NULL },
{ {"trace-syscall", optional_argument, NULL, OPTION_TRACE_SYSCALL},
'\0', "on|off", "Trace system calls",
trace_option_handler, NULL },
#ifdef SIM_HAVE_ADDR_RANGE
{ {"trace-range", required_argument, NULL, OPTION_TRACE_RANGE},
'\0', "START,END", "Specify range of addresses for instruction tracing",
@ -331,6 +335,13 @@ trace_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
sim_io_eprintf (sd, "Branch tracing not compiled in, `--trace-branch' ignored\n");
break;
case OPTION_TRACE_SYSCALL :
if (WITH_TRACE_SYSCALL_P)
return set_trace_option (sd, "-syscall", TRACE_SYSCALL_IDX, arg);
else
sim_io_eprintf (sd, "System call tracing not compiled in, `--trace-syscall' ignored\n");
break;
case OPTION_TRACE_SEMANTICS :
if (WITH_TRACE_ALU_P
&& WITH_TRACE_FPU_P
@ -621,6 +632,7 @@ trace_idx_to_str (int trace_idx)
case TRACE_EVENTS_IDX: return "events: ";
case TRACE_FPU_IDX: return "fpu: ";
case TRACE_BRANCH_IDX: return "branch: ";
case TRACE_SYSCALL_IDX: return "syscall: ";
case TRACE_VPU_IDX: return "vpu: ";
default:
sprintf (num, "?%d?", trace_idx);