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[Qemu-devel] [PATCH v2 2/2] trace: [bsd-user] Commandline arguments to c
From: |
Lluís Vilanova |
Subject: |
[Qemu-devel] [PATCH v2 2/2] trace: [bsd-user] Commandline arguments to control tracing |
Date: |
Wed, 22 Jun 2016 12:04:41 +0200 |
User-agent: |
StGit/0.17.1-dirty |
Signed-off-by: Lluís Vilanova <address@hidden>
---
bsd-user/main.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/bsd-user/main.c b/bsd-user/main.c
index 9f592be..542e50e 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -30,6 +30,7 @@
#include "qemu/timer.h"
#include "qemu/envlist.h"
#include "exec/log.h"
+#include "trace/control.h"
int singlestep;
unsigned long mmap_min_addr;
@@ -687,6 +688,12 @@ static void usage(void)
"-p pagesize set the host page size to 'pagesize'\n"
"-singlestep always run in singlestep mode\n"
"-strace log system calls\n"
+ "-trace-enable name\n"
+ " enable tracing of specified event names (pass
'help' to show a list of events)\n"
+ "-trace-events eventsfile\n"
+ " enable tracing of specified event names (one
name/pattern per line)\n"
+ "-trace-file tracefile\n"
+ " output trace file\n"
"\n"
"Environment variables:\n"
"QEMU_STRACE Print system calls and arguments similar to
the\n"
@@ -735,6 +742,7 @@ int main(int argc, char **argv)
int gdbstub_port = 0;
char **target_environ, **wrk;
envlist_t *envlist = NULL;
+ const char *trace_file = NULL;
bsd_type = target_openbsd;
if (argc <= 1)
@@ -840,6 +848,12 @@ int main(int argc, char **argv)
singlestep = 1;
} else if (!strcmp(r, "strace")) {
do_strace = 1;
+ } else if (!strcmp(r, "trace-enable")) {
+ trace_enable_events(argv[optind++]);
+ } else if (!strcmp(r, "trace-events")) {
+ trace_init_events(argv[optind++]);
+ } else if (!strcmp(r, "trace-file")) {
+ trace_file = argv[optind++];
} else
{
usage();
@@ -865,6 +879,11 @@ int main(int argc, char **argv)
}
filename = argv[optind];
+ if (!trace_init_backends()) {
+ exit(1);
+ }
+ trace_init_file(trace_file);
+
/* Zero out regs */
memset(regs, 0, sizeof(struct target_pt_regs));