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selftests/powerpc: Move get_auxv_entry() to harness.c

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Move get_auxv_entry() from pmu/lib.c up to harness.c in order to make
it available to other tests.

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Sam bobroff
2015-04-10 14:16:48 +10:00
committed by Michael Ellerman
parent feba40362b
commit 2b03fc1db5
4 changed files with 48 additions and 49 deletions
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47
tools/testing/selftests/powerpc/pmu/lib.c
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@@ -5,15 +5,10 @@
#define _GNU_SOURCE /* For CPU_ZERO etc. */
#include <elf.h>
#include <errno.h>
#include <fcntl.h>
#include <link.h>
#include <sched.h>
#include <setjmp.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "utils.h"
@@ -256,45 +251,3 @@ out:
return rc;
}
static char auxv[4096];
void *get_auxv_entry(int type)
{
ElfW(auxv_t) *p;
void *result;
ssize_t num;
int fd;
fd = open("/proc/self/auxv", O_RDONLY);
if (fd == -1) {
perror("open");
return NULL;
}
result = NULL;
num = read(fd, auxv, sizeof(auxv));
if (num < 0) {
perror("read");
goto out;
}
if (num > sizeof(auxv)) {
printf("Overflowed auxv buffer\n");
goto out;
}
p = (ElfW(auxv_t) *)auxv;
while (p->a_type != AT_NULL) {
if (p->a_type == type) {
result = (void *)p->a_un.a_val;
break;
}
p++;
}
out:
close(fd);
return result;
}