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2002-12-07  Kenneth W. Chen <kenneth.w.chen@intel.com>.

	* sysdeps/ia64/strncpy.S (strncpy): Clear ar.ec.  Fix .recovery4.

2002-12-07  Jakub Jelinek  <jakub@redhat.com>

	* string/test-strncpy.c (do_random_tests): Improve test coverage.
This commit is contained in:
Ulrich Drepper
2002-12-07 09:03:23 +00:00
parent 4614167ae7
commit 739ca6906a
3 changed files with 55 additions and 18 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2002-12-07 Kenneth W. Chen <kenneth.w.chen@intel.com>.
* sysdeps/ia64/strncpy.S (strncpy): Clear ar.ec. Fix .recovery4.
2002-12-07 Jakub Jelinek <jakub@redhat.com>
* string/test-strncpy.c (do_random_tests): Improve test coverage.
2002-12-06 Ulrich Drepper <drepper@redhat.com> 2002-12-06 Ulrich Drepper <drepper@redhat.com>
* test-skeleton.c (timeout_handler): Allow expected signal to be * test-skeleton.c (timeout_handler): Allow expected signal to be

41
string/test-strncpy.c
View File

@ -144,15 +144,39 @@ do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char)
static void static void
do_random_tests (void) do_random_tests (void)
{ {
size_t i, j, n, align1, align2, len, size; size_t i, j, n, align1, align2, len, size, mode;
unsigned char *p1 = buf1 + page_size - 512; unsigned char *p1 = buf1 + page_size - 512;
unsigned char *p2 = buf2 + page_size - 512; unsigned char *p2 = buf2 + page_size - 512;
unsigned char *res; unsigned char *res;
for (n = 0; n < ITERATIONS; n++) for (n = 0; n < ITERATIONS; n++)
{
mode = random ();
if (mode & 1)
{
size = random () & 255;
align1 = 512 - size - (random () & 15);
if (mode & 2)
align2 = align1 - (random () & 24);
else
align2 = align1 - (random () & 31);
if (mode & 4)
{
j = align1;
align1 = align2;
align2 = j;
}
if (mode & 8)
len = size - (random () & 31);
else
len = 512;
if (len >= 512)
len = random () & 511;
}
else
{ {
align1 = random () & 31; align1 = random () & 31;
if (random () & 1) if (mode & 2)
align2 = random () & 31; align2 = random () & 31;
else else
align2 = align1 + (random () & 24); align2 = align1 + (random () & 24);
@ -160,16 +184,17 @@ do_random_tests (void)
j = align1; j = align1;
if (align2 > j) if (align2 > j)
j = align2; j = align2;
if (random () & 1) if (mode & 4)
{ {
size = random () & 511; size = random () & 511;
if (size + align2 > 512) if (size + j > 512)
size = 512 - align2 - (random() & 31); size = 512 - j - (random() & 31);
} }
else else
size = 512 - align2; size = 512 - j;
if (len + j >= 511) if ((mode & 8) && len + j >= 512)
len = 510 - j - (random () & 7); len = 512 - j - (random () & 7);
}
j = len + align1 + 64; j = len + align1 + 64;
if (j > 512) if (j > 512)
j = 512; j = 512;

6
sysdeps/ia64/strncpy.S
View File

@ -63,6 +63,8 @@ ENTRY(strncpy)
mov saved_pr = pr // save the predicate registers mov saved_pr = pr // save the predicate registers
.save ar.lc, saved_lc .save ar.lc, saved_lc
mov saved_lc = ar.lc // save the loop counter mov saved_lc = ar.lc // save the loop counter
mov ar.ec = 0 // ec is not guaranteed to
// be zero upon function entry
.body .body
cmp.geu p6, p5 = 24, in2 cmp.geu p6, p5 = 24, in2
(p6) br.cond.spnt .short_len (p6) br.cond.spnt .short_len
@ -221,7 +223,9 @@ ENTRY(strncpy)
ld8 r[MEMLAT] = [tmp] ld8 r[MEMLAT] = [tmp]
br.cond.sptk .back3 br.cond.sptk .back3
.recovery4: .recovery4:
cmp.eq p5, p6 = len, r0
add tmp = -MEMLAT * 8, src ;; add tmp = -MEMLAT * 8, src ;;
ld8 r[MEMLAT - 1] = [tmp] (p6) ld8 r[MEMLAT - 1] = [tmp]
(p5) mov r[MEMLAT - 1] = r0
br.cond.sptk .back4 br.cond.sptk .back4
END(strncpy) END(strncpy)