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| author | Greg McGary <greg@mcgary.org> | 2000-08-25 21:09:43 +0000 |
|---|---|---|
| committer | Greg McGary <greg@mcgary.org> | 2000-08-25 21:09:43 +0000 |
| commit | 53c065086ba304d40b23f8539008757090ff6a58 (patch) | |
| tree | ace9dab91c4826b8e5231d057a1d6dad42e27ffc /sysdeps/i386/memcmp.S | |
| parent | ad7534c8f08c31f3e140a31e4099e7e0b5e193d2 (diff) | |
| download | glibc-53c065086ba304d40b23f8539008757090ff6a58.tar.gz | |
* sysdeps/i386/memchr.S: Check high bound against
chars actually scanned.
* sysdeps/i386/memcmp.S: Likewise.
* sysdeps/i386/stpncpy.S: Adjust high-bound check to
account for pointers that lie one beyond end-of-buffer.
Diffstat (limited to 'sysdeps/i386/memcmp.S')
| -rw-r--r-- | sysdeps/i386/memcmp.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sysdeps/i386/memcmp.S b/sysdeps/i386/memcmp.S index 8d855b9d2a..d8b60d06c5 100644 --- a/sysdeps/i386/memcmp.S +++ b/sysdeps/i386/memcmp.S @@ -38,8 +38,8 @@ ENTRY (BP_SYM (memcmp)) movl BLK1(%esp), %esi movl BLK2(%esp), %edi movl LEN(%esp), %ecx - CHECK_BOUNDS_BOTH_WIDE (%esi, BLK1(%esp), %ecx) - CHECK_BOUNDS_BOTH_WIDE (%edi, BLK2(%esp), %ecx) + CHECK_BOUNDS_LOW (%esi, BLK1(%esp)) + CHECK_BOUNDS_LOW (%edi, BLK2(%esp)) cld /* Set direction of comparison. */ @@ -62,7 +62,9 @@ ENTRY (BP_SYM (memcmp)) Note that the following operation does not change 0xffffffff. */ orb $1, %al /* Change 0 to 1. */ -L(1): popl %esi /* Restore registers. */ +L(1): CHECK_BOUNDS_HIGH (%esi, BLK1(%esp), jbe) + CHECK_BOUNDS_HIGH (%edi, BLK2(%esp), jbe) + popl %esi /* Restore registers. */ movl %edx, %edi LEAVE |