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authorJoseph Myers <joseph@codesourcery.com>2013-02-19 21:58:08 +0000
committerJoseph Myers <joseph@codesourcery.com>2013-02-19 21:58:08 +0000
commit92945b5261c412eb590b2b34c7ec9a035f0693a1 (patch)
tree2d09031d37dcb8faab0ba90eb72b61681deecc51 /sysdeps/i386/i686/strtok.S
parentb65e2ba34b218a58a74123e2d6ba70ab0d4797bf (diff)
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Remove some bounded-pointers support from i386 .S files.
Diffstat (limited to 'sysdeps/i386/i686/strtok.S')
-rw-r--r--sysdeps/i386/i686/strtok.S42
1 files changed, 4 insertions, 38 deletions
diff --git a/sysdeps/i386/i686/strtok.S b/sysdeps/i386/i686/strtok.S
index 794efbaed0..281f6635e1 100644
--- a/sysdeps/i386/i686/strtok.S
+++ b/sysdeps/i386/i686/strtok.S
@@ -46,11 +46,7 @@
 	.type save_ptr, @object
 	.size save_ptr, 4
 save_ptr:
-# if __BOUNDED_POINTERS__
-	.space 12
-# else
 	.space 4
-# endif
 
 # ifdef PIC
 #  define SAVE_PTR save_ptr@GOTOFF(%ebx)
@@ -81,7 +77,6 @@ save_ptr:
 #endif
 
 ENTRY (BP_SYM (FUNCTION))
-	ENTER
 
 #if !defined USE_AS_STRTOK_R && defined PIC
 	pushl %ebx			/* Save PIC register.  */
@@ -127,23 +122,7 @@ ENTRY (BP_SYM (FUNCTION))
 	cmove %eax, %edx
 	testl %edx, %edx
 	jz L(returnNULL)
-#if __BOUNDED_POINTERS__
-# ifdef USE_AS_STRTOK_R
-	movl SAVE(%esp), %ecx	/* borrow %ecx for a moment */
-# endif
-	je L(0)
-	/* Save bounds of incoming non-NULL STR into save area.  */
-	movl 4+STR(%esp), %eax
-	movl %eax, 4+SAVE_PTR
-	movl 8+STR(%esp), %eax
-	movl %eax, 8+SAVE_PTR
-L(0):	CHECK_BOUNDS_LOW (%edx, SAVE_PTR)
-# ifdef USE_AS_STRTOK_R
-	xorl %ecx, %ecx		/* restore %ecx to zero */
-# endif
-#endif
 	movl DELIM(%esp), %eax		/* Get start of delimiter set.  */
-	CHECK_BOUNDS_LOW (%eax, DELIM(%esp))
 
 /* For understanding the following code remember that %ecx == 0 now.
    Although all the following instruction only modify %cl we always
@@ -151,17 +130,17 @@ L(0):	CHECK_BOUNDS_LOW (%edx, SAVE_PTR)
 
 L(2):	movb (%eax), %cl	/* get byte from stopset */
 	testb %cl, %cl		/* is NUL char? */
-	jz L(1_1)		/* yes => start compare loop */
+	jz L(1)			/* yes => start compare loop */
 	movb %cl, (%esp,%ecx)	/* set corresponding byte in stopset table */
 
 	movb 1(%eax), %cl	/* get byte from stopset */
 	testb $0xff, %cl	/* is NUL char? */
-	jz L(1_2)		/* yes => start compare loop */
+	jz L(1)			/* yes => start compare loop */
 	movb %cl, (%esp,%ecx)	/* set corresponding byte in stopset table */
 
 	movb 2(%eax), %cl	/* get byte from stopset */
 	testb $0xff, %cl	/* is NUL char? */
-	jz L(1_3)		/* yes => start compare loop */
+	jz L(1)			/* yes => start compare loop */
 	movb %cl, (%esp,%ecx)	/* set corresponding byte in stopset table */
 
 	movb 3(%eax), %cl	/* get byte from stopset */
@@ -170,16 +149,7 @@ L(2):	movb (%eax), %cl	/* get byte from stopset */
 	testb $0xff, %cl	/* is NUL char? */
 	jnz L(2)		/* no => process next dword from stopset */
 
-#if __BOUNDED_POINTERS__
-	jmp L(1_0)		/* pointer is correct for bounds check */
-L(1_3):	incl %eax		/* adjust pointer for bounds check */
-L(1_2):	incl %eax		/* ditto */
-L(1_1):	incl %eax		/* ditto */
-L(1_0):	CHECK_BOUNDS_HIGH (%eax, DELIM(%esp), jbe)
-#else
-L(1_3):; L(1_2):; L(1_1):	/* fall through */
-#endif
-	leal -4(%edx), %eax	/* prepare loop */
+L(1):	leal -4(%edx), %eax	/* prepare loop */
 
 	/* We use a neat trick for the following loop.  Normally we would
 	   have to test for two termination conditions
@@ -253,8 +223,6 @@ L(8):	cmpl %eax, %edx
 	movl SAVE(%esp), %ecx
 #endif
 	movl %edx, SAVE_PTR
-	CHECK_BOUNDS_HIGH (%edx, SAVE_PTR, jb)
-	RETURN_BOUNDED_POINTER (SAVE_PTR)
 
 L(epilogue):
 	/* Remove the stopset table.  */
@@ -265,7 +233,6 @@ L(epilogue):
 	cfi_adjust_cfa_offset (-4)
 	cfi_restore (ebx)
 #endif
-	LEAVE
 	RET_PTR
 
 L(returnNULL):
@@ -274,7 +241,6 @@ L(returnNULL):
 	movl SAVE(%esp), %ecx
 #endif
 	movl %edx, SAVE_PTR
-	RETURN_NULL_BOUNDED_POINTER
 	jmp L(epilogue)
 
 END (BP_SYM (FUNCTION))