diff options
Diffstat (limited to 'sysdeps/i386/i586/strchr.S')
| -rw-r--r-- | sysdeps/i386/i586/strchr.S | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/sysdeps/i386/i586/strchr.S b/sysdeps/i386/i586/strchr.S index bf351f605e..bff1b8a84a 100644 --- a/sysdeps/i386/i586/strchr.S +++ b/sysdeps/i386/i586/strchr.S @@ -21,6 +21,7 @@ #include <sysdep.h> #include "asm-syntax.h" +#include "bp-sym.h" #include "bp-asm.h" /* This version is especially optimized for the i586 (and following?) @@ -42,7 +43,7 @@ #define CHR STR+PTR_SIZE .text -ENTRY (strchr) +ENTRY (BP_SYM (strchr)) ENTER pushl %edi /* Save callee-safe registers. */ @@ -53,6 +54,7 @@ ENTRY (strchr) movl STR(%esp), %eax movl CHR(%esp), %edx + CHECK_BOUNDS_LOW (%eax, STR(%esp)) movl %eax, %edi /* duplicate string pointer for later */ xorl %ecx, %ecx /* clear %ecx */ @@ -279,7 +281,9 @@ L(5): subl $4, %eax /* adjust pointer */ incl %eax /* increment pointer */ -L(2): popl %ebp /* restore saved registers */ +L(2): CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb) + RETURN_BOUNDED_POINTER (STR(%esp)) + popl %ebp /* restore saved registers */ popl %ebx popl %esi @@ -321,8 +325,8 @@ L(4): subl $4, %eax /* adjust pointer */ cmpb %dl, %ch /* fourth byte == C? */ je L(2) /* yes => return pointer */ -L(3): xorl %eax, %eax /* set return value = NULL */ - +L(3): xorl %eax, %eax + RETURN_NULL_BOUNDED_POINTER popl %ebp /* restore saved registers */ popl %ebx @@ -331,7 +335,7 @@ L(3): xorl %eax, %eax /* set return value = NULL */ LEAVE RET_PTR -END (strchr) +END (BP_SYM (strchr)) #undef index -weak_alias (strchr, index) +weak_alias (BP_SYM (strchr), BP_SYM (index)) |