#include "marker.h"
#include <stdio.h>
+#include <errno.h>
+#include <sys/user.h>
+__attribute__ ((visibility ("protected")))
extern struct marker __start___markers[];
+
+__attribute__ ((visibility ("protected")))
extern struct marker __stop___markers[];
/**
* though the function pointer change and the marker enabling are two distinct
* operations that modifies the execution flow of preemptible code.
*/
+__attribute__ ((visibility ("protected")))
void __mark_empty_function(void *probe_private, void *call_private,
const char *fmt, va_list *args)
{
* @...: Variable argument list.
*
*/
+__attribute__ ((visibility ("protected")))
void marker_probe_cb(const struct marker *mdata, void *call_private,
const char *fmt, ...)
{
+ char buf[PAGE_SIZE];
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsnprintf(buf, PAGE_SIZE-1, fmt, ap);
+ sys_trace(0, 0, buf);
+ va_end(ap);
+}
+
+//FIXME : imv_read won't work with optimized immediate values.
+//will need to issue one sys_marker call for each immediate value.
+__attribute__ ((visibility ("protected")))
+void testip(void)
+{
+ printf("addr : %p\n", __builtin_return_address(0));
+}
+__attribute__((constructor, visibility ("protected")))
+void marker_init(void)
+{
+ struct marker *iter;
+ int ret;
+ printf("Marker section : from %p to %p (init)\n",
+ __start___markers, __stop___markers);
+ testip();
+ for (iter = __start___markers; iter < __stop___markers; iter++) {
+ printf("Marker : %s\n", iter->name);
+ ret = sys_marker(iter->name, iter->format,
+ &imv_read(iter->state), 1);
+ if (ret)
+ perror("Error connecting markers");
+ }
}
-__attribute__((constructor)) void marker_init(void)
+__attribute__((destructor, visibility ("protected")))
+void marker_fini(void)
{
struct marker *iter;
+ int ret;
- printf("Marker section : from %p to %p\n",
+ printf("Marker section : from %p to %p (fini)\n",
__start___markers, __stop___markers);
for (iter = __start___markers; iter < __stop___markers; iter++) {
printf("Marker : %s\n", iter->name);
+ ret = sys_marker(iter->name, iter->format,
+ &imv_read(iter->state), 0);
+ if (ret)
+ perror("Error disconnecting markers");
}
}