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Diffstat (limited to 'gmon')
-rw-r--r--gmon/gmon.c52
1 files changed, 43 insertions, 9 deletions
diff --git a/gmon/gmon.c b/gmon/gmon.c
index 8e2eddd..af2ac1c 100644
--- a/gmon/gmon.c
+++ b/gmon/gmon.c
@@ -40,6 +40,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <stddef.h>
#include <unistd.h>
#include <libc-internal.h>
#include <not-cancel.h>
@@ -180,10 +181,18 @@ write_hist (fd)
int fd;
{
u_char tag = GMON_TAG_TIME_HIST;
- struct gmon_hist_hdr thdr __attribute__ ((aligned (__alignof__ (char *))));
if (_gmonparam.kcountsize > 0)
{
+ struct real_gmon_hist_hdr
+ {
+ char *low_pc;
+ char *high_pc;
+ int32_t hist_size;
+ int32_t prof_rate;
+ char dimen[15];
+ char dimen_abbrev;
+ } thdr;
struct iovec iov[3] =
{
{ &tag, sizeof (tag) },
@@ -191,11 +200,25 @@ write_hist (fd)
{ _gmonparam.kcount, _gmonparam.kcountsize }
};
- *(char **) thdr.low_pc = (char *) _gmonparam.lowpc;
- *(char **) thdr.high_pc = (char *) _gmonparam.highpc;
- *(int32_t *) thdr.hist_size = (_gmonparam.kcountsize
- / sizeof (HISTCOUNTER));
- *(int32_t *) thdr.prof_rate = __profile_frequency ();
+ if (sizeof (thdr) != sizeof (struct gmon_hist_hdr)
+ || (offsetof (struct real_gmon_hist_hdr, low_pc)
+ != offsetof (struct gmon_hist_hdr, low_pc))
+ || (offsetof (struct real_gmon_hist_hdr, high_pc)
+ != offsetof (struct gmon_hist_hdr, high_pc))
+ || (offsetof (struct real_gmon_hist_hdr, hist_size)
+ != offsetof (struct gmon_hist_hdr, hist_size))
+ || (offsetof (struct real_gmon_hist_hdr, prof_rate)
+ != offsetof (struct gmon_hist_hdr, prof_rate))
+ || (offsetof (struct real_gmon_hist_hdr, dimen)
+ != offsetof (struct gmon_hist_hdr, dimen))
+ || (offsetof (struct real_gmon_hist_hdr, dimen_abbrev)
+ != offsetof (struct gmon_hist_hdr, dimen_abbrev)))
+ abort ();
+
+ thdr.low_pc = (char *) _gmonparam.lowpc;
+ thdr.high_pc = (char *) _gmonparam.highpc;
+ thdr.hist_size = _gmonparam.kcountsize / sizeof (HISTCOUNTER);
+ thdr.prof_rate = __profile_frequency ();
strncpy (thdr.dimen, "seconds", sizeof (thdr.dimen));
thdr.dimen_abbrev = 's';
@@ -318,7 +341,6 @@ write_bb_counts (fd)
static void
write_gmon (void)
{
- struct gmon_hdr ghdr __attribute__ ((aligned (__alignof__ (int))));
int fd = -1;
char *env;
@@ -350,9 +372,21 @@ write_gmon (void)
}
/* write gmon.out header: */
- memset (&ghdr, '\0', sizeof (struct gmon_hdr));
+ struct real_gmon_hdr
+ {
+ char cookie[4];
+ int32_t version;
+ char spare[3 * 4];
+ } ghdr;
+ if (sizeof (ghdr) != sizeof (struct gmon_hdr)
+ || (offsetof (struct real_gmon_hdr, cookie)
+ != offsetof (struct gmon_hdr, cookie))
+ || (offsetof (struct real_gmon_hdr, version)
+ != offsetof (struct gmon_hdr, version)))
+ abort ();
memcpy (&ghdr.cookie[0], GMON_MAGIC, sizeof (ghdr.cookie));
- *(int32_t *) ghdr.version = GMON_VERSION;
+ ghdr.version = GMON_VERSION;
+ memset (ghdr.spare, '\0', sizeof (ghdr.spare));
write_not_cancel (fd, &ghdr, sizeof (struct gmon_hdr));
/* write PC histogram: */