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| author | Joseph Myers <joseph@codesourcery.com> | 2013-02-19 21:58:08 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2013-02-19 21:58:08 +0000 |
| commit | 92945b5261c412eb590b2b34c7ec9a035f0693a1 (patch) | |
| tree | 2d09031d37dcb8faab0ba90eb72b61681deecc51 /sysdeps/i386/i586/strchr.S | |
| parent | b65e2ba34b218a58a74123e2d6ba70ab0d4797bf (diff) | |
| download | glibc-92945b5261c412eb590b2b34c7ec9a035f0693a1.tar.gz glibc-92945b5261c412eb590b2b34c7ec9a035f0693a1.tar.xz glibc-92945b5261c412eb590b2b34c7ec9a035f0693a1.zip | |
Remove some bounded-pointers support from i386 .S files.
Diffstat (limited to 'sysdeps/i386/i586/strchr.S')
| -rw-r--r-- | sysdeps/i386/i586/strchr.S | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/sysdeps/i386/i586/strchr.S b/sysdeps/i386/i586/strchr.S index d005b164f3..e2dfa20152 100644 --- a/sysdeps/i386/i586/strchr.S +++ b/sysdeps/i386/i586/strchr.S @@ -43,7 +43,6 @@ .text ENTRY (BP_SYM (strchr)) - ENTER pushl %edi /* Save callee-safe registers. */ cfi_adjust_cfa_offset (-4) @@ -57,7 +56,6 @@ ENTRY (BP_SYM (strchr)) movl STR(%esp), %eax movl CHR(%esp), %edx - CHECK_BOUNDS_LOW (%eax, STR(%esp)) movl %eax, %edi /* duplicate string pointer for later */ cfi_rel_offset (edi, 12) @@ -82,7 +80,7 @@ ENTRY (BP_SYM (strchr)) jp L(0) /* exactly two bits set */ xorb (%eax), %cl /* is byte the one we are looking for? */ - jz L(2) /* yes => return pointer */ + jz L(out) /* yes => return pointer */ xorb %dl, %cl /* load single byte and test for NUL */ je L(3) /* yes => return NULL */ @@ -91,7 +89,7 @@ ENTRY (BP_SYM (strchr)) incl %eax cmpb %cl, %dl /* is byte == C? */ - je L(2) /* aligned => return pointer */ + je L(out) /* aligned => return pointer */ cmpb $0, %cl /* is byte NUL? */ je L(3) /* yes => return NULL */ @@ -104,7 +102,7 @@ ENTRY (BP_SYM (strchr)) L(0): movb (%eax), %cl /* load single byte */ cmpb %cl, %dl /* is byte == C? */ - je L(2) /* aligned => return pointer */ + je L(out) /* aligned => return pointer */ cmpb $0, %cl /* is byte NUL? */ je L(3) /* yes => return NULL */ @@ -274,23 +272,21 @@ L(1): xorl %ecx, %ebp /* (word^magic) */ L(5): subl $4, %eax /* adjust pointer */ testb %bl, %bl /* first byte == C? */ - jz L(2) /* yes => return pointer */ + jz L(out) /* yes => return pointer */ incl %eax /* increment pointer */ testb %bh, %bh /* second byte == C? */ - jz L(2) /* yes => return pointer */ + jz L(out) /* yes => return pointer */ shrl $16, %ebx /* make upper bytes accessible */ incl %eax /* increment pointer */ cmp $0, %bl /* third byte == C */ - je L(2) /* yes => return pointer */ + je L(out) /* yes => return pointer */ incl %eax /* increment pointer */ -L(2): CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb) - RETURN_BOUNDED_POINTER (STR(%esp)) L(out): popl %ebp /* restore saved registers */ cfi_adjust_cfa_offset (-4) cfi_restore (ebp) @@ -305,7 +301,6 @@ L(out): popl %ebp /* restore saved registers */ cfi_adjust_cfa_offset (-4) cfi_restore (edi) - LEAVE RET_PTR cfi_adjust_cfa_offset (16) @@ -318,7 +313,7 @@ L(out): popl %ebp /* restore saved registers */ L(4): subl $4, %eax /* adjust pointer */ cmpb %dl, %cl /* first byte == C? */ - je L(2) /* yes => return pointer */ + je L(out) /* yes => return pointer */ cmpb $0, %cl /* first byte == NUL? */ je L(3) /* yes => return NULL */ @@ -326,7 +321,7 @@ L(4): subl $4, %eax /* adjust pointer */ incl %eax /* increment pointer */ cmpb %dl, %ch /* second byte == C? */ - je L(2) /* yes => return pointer */ + je L(out) /* yes => return pointer */ cmpb $0, %ch /* second byte == NUL? */ je L(3) /* yes => return NULL */ @@ -335,7 +330,7 @@ L(4): subl $4, %eax /* adjust pointer */ incl %eax /* increment pointer */ cmpb %dl, %cl /* third byte == C? */ - je L(2) /* yes => return pointer */ + je L(out) /* yes => return pointer */ cmpb $0, %cl /* third byte == NUL? */ je L(3) /* yes => return NULL */ @@ -344,10 +339,9 @@ L(4): subl $4, %eax /* adjust pointer */ /* The test four the fourth byte is necessary! */ cmpb %dl, %ch /* fourth byte == C? */ - je L(2) /* yes => return pointer */ + je L(out) /* yes => return pointer */ L(3): xorl %eax, %eax - RETURN_NULL_BOUNDED_POINTER jmp L(out) END (BP_SYM (strchr)) |