* sysdeps/i386/add_n.S: Wrap entry-point symbol in BP_SYM ().

Check bounds of arguments. 
* sysdeps/i386/addmul_1.S: Likewise. 
* sysdeps/i386/lshift.S: Likewise. 
* sysdeps/i386/mul_1.S: Likewise. 
* sysdeps/i386/rshift.S: Likewise. 
* sysdeps/i386/sub_n.S: Likewise. 
* sysdeps/i386/submul_1.S: Likewise. 
* sysdeps/i386/i586/add_n.S: Likewise. 
* sysdeps/i386/i586/addmul_1.S: Likewise. 
* sysdeps/i386/i586/lshift.S: Likewise. 
* sysdeps/i386/i586/rshift.S: Likewise. 
* sysdeps/i386/i586/sub_n.S: Likewise. 
* sysdeps/i386/i686/add_n.S: Likewise.
	* sysdeps/i386/memchr.S: Likewise.
	* sysdeps/i386/memcmp.S: Likewise.
	* sysdeps/i386/rawmemchr.S: Likewise.
	* sysdeps/i386/i586/bzero.S: Likewise.
	* sysdeps/i386/i586/memcpy.S: Likewise.
	* sysdeps/i386/i586/mempcpy.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i686/bzero.S: Likewise.
	* sysdeps/i386/i686/memcpy.S: Likewise.
	* sysdeps/i386/i686/mempcpy.S: Likewise.
	* sysdeps/i386/i686/memset.S: Likewise.

	* sysdeps/i386/stpcpy.S: Likewise.
	* sysdeps/i386/stpncpy.S: Likewise.
	* sysdeps/i386/strchr.S: Likewise.
	* sysdeps/i386/strchrnul.S: Likewise.
	* sysdeps/i386/strcspn.S: Likewise.
	* sysdeps/i386/strpbrk.S: Likewise.
	* sysdeps/i386/strrchr.S: Likewise.
	* sysdeps/i386/strspn.S: Likewise.
	* sysdeps/i386/strtok.S: Likewise.
	* sysdeps/i386/strtok_r.S: Likewise.
	* sysdeps/i386/i486/strcat.S: Likewise.
	* sysdeps/i386/i486/strlen.S: Likewise.
	* sysdeps/i386/i586/strchr.S: Likewise.
	* sysdeps/i386/i586/strcpy.S: Likewise.
	* sysdeps/i386/i586/strlen.S: Likewise.
	* sysdeps/i386/i686/strcmp.S: Likewise.
	* sysdeps/i386/i686/strtok.S: Likewise.
	* sysdeps/i386/i686/strtok_r.S: Likewise.

	* sysdeps/i386/fpu/fegetenv.c: Wrap symbol names with BP_SYM ().
	* sysdeps/i386/fpu/fesetenv.c: Likewise.
	* sysdeps/i386/fpu/feupdateenv.c: Likewise.
	* sysdeps/i386/fpu/fgetexcptflg.c: Likewise.
	* sysdeps/i386/fpu/fsetexcptflg.c: Likewise.
	* sysdeps/i386/add_n.S: Wrap entry-point symbol in BP_SYM ().
	Check bounds of arguments.
	* sysdeps/i386/addmul_1.S: Likewise.
	* sysdeps/i386/lshift.S: Likewise.
	* sysdeps/i386/mul_1.S: Likewise.
	* sysdeps/i386/rshift.S: Likewise.
	* sysdeps/i386/sub_n.S: Likewise.
	* sysdeps/i386/submul_1.S: Likewise.
	* sysdeps/i386/i586/add_n.S: Likewise.
	* sysdeps/i386/i586/addmul_1.S: Likewise.
	* sysdeps/i386/i586/lshift.S: Likewise.
	* sysdeps/i386/i586/rshift.S: Likewise.
	* sysdeps/i386/i586/sub_n.S: Likewise.
	* sysdeps/i386/i686/add_n.S: Likewise.

	* sysdeps/i386/memchr.S: Likewise.
	* sysdeps/i386/memcmp.S: Likewise.
	* sysdeps/i386/rawmemchr.S: Likewise.
	* sysdeps/i386/i586/bzero.S: Likewise.
	* sysdeps/i386/i586/memcpy.S: Likewise.
	* sysdeps/i386/i586/mempcpy.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i686/bzero.S: Likewise.
	* sysdeps/i386/i686/memcpy.S: Likewise.
	* sysdeps/i386/i686/mempcpy.S: Likewise.
	* sysdeps/i386/i686/memset.S: Likewise.

	* sysdeps/i386/stpcpy.S: Likewise.
	* sysdeps/i386/stpncpy.S: Likewise.
	* sysdeps/i386/strchr.S: Likewise.
	* sysdeps/i386/strchrnul.S: Likewise.
	* sysdeps/i386/strcspn.S: Likewise.
	* sysdeps/i386/strpbrk.S: Likewise.
	* sysdeps/i386/strrchr.S: Likewise.
	* sysdeps/i386/strspn.S: Likewise.
	* sysdeps/i386/strtok.S: Likewise.
	* sysdeps/i386/strtok_r.S: Likewise.
	* sysdeps/i386/i486/strcat.S: Likewise.
	* sysdeps/i386/i486/strlen.S: Likewise.
	* sysdeps/i386/i586/strchr.S: Likewise.
	* sysdeps/i386/i586/strcpy.S: Likewise.
	* sysdeps/i386/i586/strlen.S: Likewise.
	* sysdeps/i386/i686/strcmp.S: Likewise.
	* sysdeps/i386/i686/strtok.S: Likewise.
	* sysdeps/i386/i686/strtok_r.S: Likewise.

	* sysdeps/i386/fpu/fegetenv.c: Wrap symbol names with BP_SYM ().
	* sysdeps/i386/fpu/fesetenv.c: Likewise.
	* sysdeps/i386/fpu/feupdateenv.c: Likewise.
	* sysdeps/i386/fpu/fgetexcptflg.c: Likewise.
	* sysdeps/i386/fpu/fsetexcptflg.c: Likewise.

48 files changed, 428 insertions, 146 deletions

diff --git a/ChangeLog b/ChangeLog
index b514538..a5d183f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,57 @@
 2000-06-26  Greg McGary  <greg@mcgary.org>
 
+	* sysdeps/i386/add_n.S: Wrap entry-point symbol in BP_SYM ().
+	Check bounds of arguments.
+	* sysdeps/i386/addmul_1.S: Likewise.
+	* sysdeps/i386/lshift.S: Likewise.
+	* sysdeps/i386/mul_1.S: Likewise.
+	* sysdeps/i386/rshift.S: Likewise.
+	* sysdeps/i386/sub_n.S: Likewise.
+	* sysdeps/i386/submul_1.S: Likewise.
+	* sysdeps/i386/i586/add_n.S: Likewise.
+	* sysdeps/i386/i586/addmul_1.S: Likewise.
+	* sysdeps/i386/i586/lshift.S: Likewise.
+	* sysdeps/i386/i586/rshift.S: Likewise.
+	* sysdeps/i386/i586/sub_n.S: Likewise.
+	* sysdeps/i386/i686/add_n.S: Likewise.
+
+	* sysdeps/i386/memchr.S: Likewise.
+	* sysdeps/i386/memcmp.S: Likewise.
+	* sysdeps/i386/rawmemchr.S: Likewise.
+	* sysdeps/i386/i586/bzero.S: Likewise.
+	* sysdeps/i386/i586/memcpy.S: Likewise.
+	* sysdeps/i386/i586/mempcpy.S: Likewise.
+	* sysdeps/i386/i586/memset.S: Likewise.
+	* sysdeps/i386/i686/bzero.S: Likewise.
+	* sysdeps/i386/i686/memcpy.S: Likewise.
+	* sysdeps/i386/i686/mempcpy.S: Likewise.
+	* sysdeps/i386/i686/memset.S: Likewise.
+
+	* sysdeps/i386/stpcpy.S: Likewise.
+	* sysdeps/i386/stpncpy.S: Likewise.
+	* sysdeps/i386/strchr.S: Likewise.
+	* sysdeps/i386/strchrnul.S: Likewise.
+	* sysdeps/i386/strcspn.S: Likewise.
+	* sysdeps/i386/strpbrk.S: Likewise.
+	* sysdeps/i386/strrchr.S: Likewise.
+	* sysdeps/i386/strspn.S: Likewise.
+	* sysdeps/i386/strtok.S: Likewise.
+	* sysdeps/i386/strtok_r.S: Likewise.
+	* sysdeps/i386/i486/strcat.S: Likewise.
+	* sysdeps/i386/i486/strlen.S: Likewise.
+	* sysdeps/i386/i586/strchr.S: Likewise.
+	* sysdeps/i386/i586/strcpy.S: Likewise.
+	* sysdeps/i386/i586/strlen.S: Likewise.
+	* sysdeps/i386/i686/strcmp.S: Likewise.
+	* sysdeps/i386/i686/strtok.S: Likewise.
+	* sysdeps/i386/i686/strtok_r.S: Likewise.
+
+	* sysdeps/i386/fpu/fegetenv.c: Wrap symbol names with BP_SYM ().
+	* sysdeps/i386/fpu/fesetenv.c: Likewise.
+	* sysdeps/i386/fpu/feupdateenv.c: Likewise.
+	* sysdeps/i386/fpu/fgetexcptflg.c: Likewise.
+	* sysdeps/i386/fpu/fsetexcptflg.c: Likewise.
+
 	* sysdeps/i386/addmul_1.S: Exchange roles of %ebp and %ebx.
 	* sysdeps/i386/mul_1.S: Likewise.
 	* sysdeps/i386/submul_1.S: Likewise.
diff --git a/sysdeps/i386/add_n.S b/sysdeps/i386/add_n.S
index edd2e85..31f3822 100644
--- a/sysdeps/i386/add_n.S
+++ b/sysdeps/i386/add_n.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+8	/* space for 2 saved regs */
@@ -29,7 +30,7 @@
 #define SIZE	S2+PTR_SIZE
 
 	.text
-ENTRY(__mpn_add_n)
+ENTRY (BP_SYM (__mpn_add_n))
 	ENTER
 
 	pushl %edi
@@ -39,7 +40,13 @@ ENTRY(__mpn_add_n)
 	movl S1(%esp),%esi
 	movl S2(%esp),%edx
 	movl SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %ecx	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%edx, S2(%esp), %ecx)
+	shrl	$2, %ecx
+#endif
 	movl	%ecx,%eax
 	shrl	$3,%ecx			/* compute count for unrolled loop */
 	negl	%eax
@@ -103,4 +110,4 @@ L(oop):	movl	(%esi),%eax
 
 	LEAVE
 	ret
-END(__mpn_add_n)
+END (BP_SYM (__mpn_add_n))
diff --git a/sysdeps/i386/addmul_1.S b/sysdeps/i386/addmul_1.S
index a028944..47c875d 100644
--- a/sysdeps/i386/addmul_1.S
+++ b/sysdeps/i386/addmul_1.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16	/* space for 4 saved regs */
@@ -34,7 +35,7 @@
 #define s2_limb ebx
 
 	.text
-ENTRY(__mpn_addmul_1)
+ENTRY (BP_SYM (__mpn_addmul_1))
 	ENTER
 
 	pushl	%edi
@@ -46,7 +47,13 @@ ENTRY(__mpn_addmul_1)
 	movl	S1(%esp), %s1_ptr
 	movl	SIZE(%esp), %sizeP
 	movl	S2LIMB(%esp), %s2_limb
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %sizeP	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %sizeP)
+	CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %sizeP)
+	CHECK_BOUNDS_BOTH_WIDE (%s2_limb, S2LIMB(%esp), %sizeP)
+	shrl	$2, %sizeP
+#endif
 	leal	(%res_ptr,%sizeP,4), %res_ptr
 	leal	(%s1_ptr,%sizeP,4), %s1_ptr
 	negl	%sizeP
@@ -72,4 +79,4 @@ L(oop):
 
 	LEAVE
 	ret
-END(__mpn_addmul_1)
+END (BP_SYM (__mpn_addmul_1))
diff --git a/sysdeps/i386/fpu/fegetenv.c b/sysdeps/i386/fpu/fegetenv.c
index 0c0f839..22a675e 100644
--- a/sysdeps/i386/fpu/fegetenv.c
+++ b/sysdeps/i386/fpu/fegetenv.c
@@ -19,6 +19,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <fenv.h>
+#include <bp-sym.h>
 
 int
 __fegetenv (fenv_t *envp)
@@ -29,5 +30,5 @@ __fegetenv (fenv_t *envp)
   return 0;
 }
 strong_alias (__fegetenv, __old_fegetenv)
-symbol_version (__old_fegetenv, fegetenv, GLIBC_2.1);
-default_symbol_version (__fegetenv, fegetenv, GLIBC_2.2);
+symbol_version (BP_SYM (__old_fegetenv), BP_SYM (fegetenv), GLIBC_2.1);
+default_symbol_version (BP_SYM (__fegetenv), BP_SYM (fegetenv), GLIBC_2.2);
diff --git a/sysdeps/i386/fpu/fesetenv.c b/sysdeps/i386/fpu/fesetenv.c
index 70d2043..8c2ccee 100644
--- a/sysdeps/i386/fpu/fesetenv.c
+++ b/sysdeps/i386/fpu/fesetenv.c
@@ -19,8 +19,8 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <fenv.h>
-
 #include <assert.h>
+#include <bp-sym.h>
 
 
 int
@@ -78,5 +78,5 @@ __fesetenv (const fenv_t *envp)
   return 0;
 }
 strong_alias (__fesetenv, __old_fesetenv)
-symbol_version (__old_fesetenv, fesetenv, GLIBC_2.1);
-default_symbol_version (__fesetenv, fesetenv, GLIBC_2.2);
+symbol_version (BP_SYM (__old_fesetenv), BP_SYM (fesetenv), GLIBC_2.1);
+default_symbol_version (BP_SYM (__fesetenv), BP_SYM (fesetenv), GLIBC_2.2);
diff --git a/sysdeps/i386/fpu/feupdateenv.c b/sysdeps/i386/fpu/feupdateenv.c
index 3acd726..838d381 100644
--- a/sysdeps/i386/fpu/feupdateenv.c
+++ b/sysdeps/i386/fpu/feupdateenv.c
@@ -19,6 +19,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <fenv.h>
+#include <bp-sym.h>
 
 int
 __feupdateenv (const fenv_t *envp)
@@ -41,5 +42,5 @@ __feupdateenv (const fenv_t *envp)
   return 0;
 }
 strong_alias (__feupdateenv, __old_feupdateenv)
-symbol_version (__old_feupdateenv, feupdateenv, GLIBC_2.1);
-default_symbol_version (__feupdateenv, feupdateenv, GLIBC_2.2);
+symbol_version (BP_SYM (__old_feupdateenv), BP_SYM (feupdateenv), GLIBC_2.1);
+default_symbol_version (BP_SYM (__feupdateenv), BP_SYM (feupdateenv), GLIBC_2.2);
diff --git a/sysdeps/i386/fpu/fgetexcptflg.c b/sysdeps/i386/fpu/fgetexcptflg.c
index b173afd..dfa3c34 100644
--- a/sysdeps/i386/fpu/fgetexcptflg.c
+++ b/sysdeps/i386/fpu/fgetexcptflg.c
@@ -19,6 +19,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <fenv.h>
+#include <bp-sym.h>
 
 int
 __fegetexceptflag (fexcept_t *flagp, int excepts)
@@ -34,5 +35,5 @@ __fegetexceptflag (fexcept_t *flagp, int excepts)
   return 0;
 }
 strong_alias (__fegetexceptflag, __old_fegetexceptflag)
-symbol_version (__old_fegetexceptflag, fegetexceptflag, GLIBC_2.1);
-default_symbol_version (__fegetexceptflag, fegetexceptflag, GLIBC_2.2);
+symbol_version (BP_SYM (__old_fegetexceptflag), BP_SYM (fegetexceptflag), GLIBC_2.1);
+default_symbol_version (BP_SYM (__fegetexceptflag), BP_SYM (fegetexceptflag), GLIBC_2.2);
diff --git a/sysdeps/i386/fpu/fsetexcptflg.c b/sysdeps/i386/fpu/fsetexcptflg.c
index 6c196fb..da5adce 100644
--- a/sysdeps/i386/fpu/fsetexcptflg.c
+++ b/sysdeps/i386/fpu/fsetexcptflg.c
@@ -20,6 +20,7 @@
 
 #include <fenv.h>
 #include <math.h>
+#include <bp-sym.h>
 
 int
 __fesetexceptflag (const fexcept_t *flagp, int excepts)
@@ -42,5 +43,5 @@ __fesetexceptflag (const fexcept_t *flagp, int excepts)
   return 0;
 }
 strong_alias (__fesetexceptflag, __old_fesetexceptflag)
-symbol_version (__old_fesetexceptflag, fesetexceptflag, GLIBC_2.1);
-default_symbol_version (__fesetexceptflag, fesetexceptflag, GLIBC_2.2);
+symbol_version (BP_SYM (__old_fesetexceptflag), BP_SYM (fesetexceptflag), GLIBC_2.1);
+default_symbol_version (BP_SYM (__fesetexceptflag), BP_SYM (fesetexceptflag), GLIBC_2.2);
diff --git a/sysdeps/i386/i486/strcat.S b/sysdeps/i386/i486/strcat.S
index c4ab170..a37511f 100644
--- a/sysdeps/i386/i486/strcat.S
+++ b/sysdeps/i386/i486/strcat.S
@@ -22,6 +22,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+4	/* space for 1 saved reg */
@@ -30,13 +31,15 @@
 #define SRC	DEST+PTR_SIZE
 
 	.text
-ENTRY (strcat)
+ENTRY (BP_SYM (strcat))
 	ENTER
 
 	pushl %edi		/* Save callee-safe register.  */
 
 	movl DEST(%esp), %edx
 	movl SRC(%esp), %ecx
+	CHECK_BOUNDS_LOW (%edx, DEST(%esp))
+	CHECK_BOUNDS_LOW (%ecx, SRC(%esp))
 
 	testb $0xff, (%ecx)	/* Is source string empty? */
 	jz L(8)			/* yes => return */
@@ -256,9 +259,11 @@ L(9):	movb %al, (%ecx,%edx)	/* store first byte of last word */
 
 	movb %ah, 3(%ecx,%edx)	/* store fourth byte of last word */
 
-L(8):	movl DEST(%esp), %eax	/* start address of destination is result */
+L(8):	/* GKM FIXME: check high bounds */
+	movl DEST(%esp), %eax	/* start address of destination is result */
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 	popl %edi		/* restore saved register */
 
 	LEAVE
 	RET_PTR
-END (strcat)
+END (BP_SYM (strcat))
diff --git a/sysdeps/i386/i486/strlen.S b/sysdeps/i386/i486/strlen.S
index d19a345..6c3eba8 100644
--- a/sysdeps/i386/i486/strlen.S
+++ b/sysdeps/i386/i486/strlen.S
@@ -21,16 +21,18 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
 #define STR	PARMS
 
 	.text
-ENTRY (strlen)
+ENTRY (BP_SYM (strlen))
 	ENTER
 
 	movl STR(%esp), %ecx
+	CHECK_BOUNDS_LOW (%ecx, STR(%esp))
 	movl %ecx, %eax		/* duplicate it */
 
 	andl $3, %ecx		/* mask alignment bits */
@@ -128,8 +130,9 @@ L(3):	testb %cl, %cl		/* is first byte NUL? */
 	jz L(2)			/* yes => return pointer */
 	incl %eax		/* increment pointer */
 
-L(2):	subl STR(%esp), %eax	/* compute difference to string start */
+L(2):	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	subl STR(%esp), %eax	/* compute difference to string start */
 
 	LEAVE
 	ret
-END (strlen)
+END (BP_SYM (strlen))
diff --git a/sysdeps/i386/i586/add_n.S b/sysdeps/i386/i586/add_n.S
index 7e30cac..6ed5055 100644
--- a/sysdeps/i386/i586/add_n.S
+++ b/sysdeps/i386/i586/add_n.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16		/* space for 4 saved regs */
@@ -29,7 +30,7 @@
 #define SIZE	S2+PTR_SIZE
 
 	.text
-ENTRY(__mpn_add_n)
+ENTRY (BP_SYM (__mpn_add_n))
 	ENTER
 
 	pushl	%edi
@@ -41,7 +42,13 @@ ENTRY(__mpn_add_n)
 	movl	S1(%esp),%esi
 	movl	S2(%esp),%ebx
 	movl	SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %ecx		/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%ebx, S2(%esp), %ecx)
+	shrl	$2, %ecx
+#endif
 	movl	(%ebx),%ebp
 
 	decl	%ecx
@@ -127,4 +134,4 @@ L(end2):
 
 	LEAVE
 	ret
-END(__mpn_add_n)
+END (BP_SYM (__mpn_add_n))
diff --git a/sysdeps/i386/i586/addmul_1.S b/sysdeps/i386/i586/addmul_1.S
index 06cdbe1..2cc17dd 100644
--- a/sysdeps/i386/i586/addmul_1.S
+++ b/sysdeps/i386/i586/addmul_1.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16	/* space for 4 saved regs */
@@ -34,7 +35,7 @@
 #define s2_limb ebx
 
 	.text
-ENTRY(__mpn_addmul_1)
+ENTRY (BP_SYM (__mpn_addmul_1))
 	ENTER
 
 	pushl	%edi
@@ -46,7 +47,13 @@ ENTRY(__mpn_addmul_1)
 	movl	S1(%esp), %s1_ptr
 	movl	SIZE(%esp), %size
 	movl	S2LIMB(%esp), %s2_limb
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %size	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %size)
+	CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %size)
+	CHECK_BOUNDS_BOTH_WIDE (%s2_limb, S2LIMB(%esp), %size)
+	shrl	$2, %size
+#endif
 	leal	(%res_ptr,%size,4), %res_ptr
 	leal	(%s1_ptr,%size,4), %s1_ptr
 	negl	%size
@@ -80,4 +87,4 @@ L(oop):	adcl	$0, %ebp
 	LEAVE
 	ret
 #undef size
-END(__mpn_addmul_1)
+END (BP_SYM (__mpn_addmul_1))
diff --git a/sysdeps/i386/i586/bzero.S b/sysdeps/i386/i586/bzero.S
index 84d2f70..220aa47 100644
--- a/sysdeps/i386/i586/bzero.S
+++ b/sysdeps/i386/i586/bzero.S
@@ -1,3 +1,3 @@
 #define memset __bzero
 #include <sysdeps/i386/i586/memset.S>
-weak_alias (__bzero, bzero)
+weak_alias (BP_SYM (__bzero), BP_SYM (bzero))
diff --git a/sysdeps/i386/i586/lshift.S b/sysdeps/i386/i586/lshift.S
index 2a44150..5d753b0 100644
--- a/sysdeps/i386/i586/lshift.S
+++ b/sysdeps/i386/i586/lshift.S
@@ -19,6 +19,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16		/* space for 4 saved regs */
@@ -28,7 +29,7 @@
 #define CNT	SIZE+4
 
 	.text
-ENTRY(__mpn_lshift)
+ENTRY (BP_SYM (__mpn_lshift))
 	ENTER
 
 	pushl	%edi
@@ -40,6 +41,12 @@ ENTRY(__mpn_lshift)
 	movl	S(%esp),%esi
 	movl	SIZE(%esp),%ebx
 	movl	CNT(%esp),%ecx
+#if __BOUNDED_POINTERS__
+	shll	$2, %ebx		/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ebx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S(%esp), %ebx)
+	shrl	$2, %ebx
+#endif
 
 /* We can use faster code for shift-by-1 under certain conditions.  */
 	cmp	$1,%ecx
@@ -222,4 +229,4 @@ L(L1):	movl	%edx,(%edi)		/* store last limb */
 
 	LEAVE
 	ret
-END(__mpn_lshift)
+END (BP_SYM (__mpn_lshift))
diff --git a/sysdeps/i386/i586/memcpy.S b/sysdeps/i386/i586/memcpy.S
index ed35b48..514f82e 100644
--- a/sysdeps/i386/i586/memcpy.S
+++ b/sysdeps/i386/i586/memcpy.S
@@ -20,6 +20,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 /* BEWARE: `#ifdef memcpy' means that memcpy is redefined as `mempcpy',
@@ -34,7 +35,7 @@
 #define LEN	SRC+PTR_SIZE
 
         .text
-ENTRY (memcpy)
+ENTRY (BP_SYM (memcpy))
 	ENTER
 
 	pushl	%edi
@@ -43,6 +44,8 @@ ENTRY (memcpy)
 	movl	DEST(%esp), %edi
 	movl	SRC(%esp), %esi
 	movl	LEN(%esp), %ecx
+	CHECK_BOUNDS_BOTH_WIDE (%edi, DEST(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, SRC(%esp), %ecx)
 	movl	%edi, %eax
 
 	/* We need this in any case.  */
@@ -112,4 +115,4 @@ L(1):	rep; movsb
 
 	LEAVE
 	RET_PTR
-END (memcpy)
+END (BP_SYM (memcpy))
diff --git a/sysdeps/i386/i586/mempcpy.S b/sysdeps/i386/i586/mempcpy.S
index 03dc078..d4611c2 100644
--- a/sysdeps/i386/i586/mempcpy.S
+++ b/sysdeps/i386/i586/mempcpy.S
@@ -1,4 +1,4 @@
 #define memcpy __mempcpy
 #include <sysdeps/i386/i586/memcpy.S>
 
-weak_alias (__mempcpy, mempcpy)
+weak_alias (BP_SYM (__mempcpy), BP_SYM (mempcpy))
diff --git a/sysdeps/i386/i586/memset.S b/sysdeps/i386/i586/memset.S
index 8b292e9..931832b 100644
--- a/sysdeps/i386/i586/memset.S
+++ b/sysdeps/i386/i586/memset.S
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 /* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
@@ -37,18 +38,18 @@
 #endif
 
         .text
-ENTRY (memset)
+ENTRY (BP_SYM (memset))
 	ENTER
 
 	pushl	%edi
 
 	movl	DEST(%esp), %edi
 	movl	LEN(%esp), %edx
+	CHECK_BOUNDS_BOTH_WIDE (%edi, DEST(%esp), %edx)
 #if BZERO_P
 	xorl	%eax, %eax	/* we fill with 0 */
 #else
 	movb	CHR(%esp), %al
-
 	movb	%al, %ah
 	movl	%eax, %ecx
 	shll	$16, %eax
@@ -101,7 +102,8 @@ L(2):	shrl	$2, %ecx	/* convert byte count to longword count */
 
 #if !BZERO_P
 	/* Load result (only if used as memset).  */
-	movl	DEST(%esp), %eax
+	movl DEST(%esp), %eax	/* start address of destination is result */
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 #endif
 	popl	%edi
 
@@ -111,4 +113,4 @@ L(2):	shrl	$2, %ecx	/* convert byte count to longword count */
 #else
 	RET_PTR
 #endif
-END (memset)
+END (BP_SYM (memset))
diff --git a/sysdeps/i386/i586/rshift.S b/sysdeps/i386/i586/rshift.S
index 00b4cb7..e82f175 100644
--- a/sysdeps/i386/i586/rshift.S
+++ b/sysdeps/i386/i586/rshift.S
@@ -19,6 +19,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16		/* space for 4 saved regs */
@@ -28,7 +29,7 @@
 #define CNT	SIZE+4
 
 	.text
-ENTRY(__mpn_rshift)
+ENTRY (BP_SYM (__mpn_rshift))
 	ENTER
 
 	pushl	%edi
@@ -40,6 +41,12 @@ ENTRY(__mpn_rshift)
 	movl	S(%esp),%esi
 	movl	SIZE(%esp),%ebx
 	movl	CNT(%esp),%ecx
+#if __BOUNDED_POINTERS__
+	shll	$2, %ebx		/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ebx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S(%esp), %ebx)
+	shrl	$2, %ebx
+#endif
 
 /* We can use faster code for shift-by-1 under certain conditions.  */
 	cmp	$1,%ecx
@@ -222,4 +229,4 @@ L(L1):	movl	%edx,(%edi)		/* store last limb */
 
 	LEAVE
 	ret
-END(__mpn_rshift)
+END (BP_SYM (__mpn_rshift))
diff --git a/sysdeps/i386/i586/strchr.S b/sysdeps/i386/i586/strchr.S
index bf351f6..bff1b8a 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))
diff --git a/sysdeps/i386/i586/strcpy.S b/sysdeps/i386/i586/strcpy.S
index a48fbb6..03c4e77 100644
--- a/sysdeps/i386/i586/strcpy.S
+++ b/sysdeps/i386/i586/strcpy.S
@@ -20,6 +20,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+12	/* space for 3 saved regs */
@@ -34,7 +35,7 @@
 #define magic 0xfefefeff
 
 	.text
-ENTRY(STRCPY)
+ENTRY (BP_SYM (STRCPY))
 	ENTER
 
 	pushl	%edi
@@ -43,6 +44,8 @@ ENTRY(STRCPY)
 
 	movl	DEST(%esp), %edi
 	movl	SRC(%esp), %esi
+	CHECK_BOUNDS_LOW (%edi, DEST(%esp))
+	CHECK_BOUNDS_LOW (%esi, SRC(%esp))
 
 	xorl	%eax, %eax
 	leal	-1(%esi), %ecx
@@ -142,15 +145,17 @@ L(4):	movb	%dl, (%edi)
 L(end):	movb	%ah, (%edi)
 
 L(end2):
+	/* GKM FIXME: check high bounds  */
 #ifdef USE_AS_STPCPY
 	movl	%edi, %eax
 #else
 	movl	DEST(%esp), %eax
 #endif
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 	popl	%ebx
 	popl	%esi
 	popl	%edi
 
 	LEAVE
 	RET_PTR
-END(STRCPY)
+END (BP_SYM (STRCPY))
diff --git a/sysdeps/i386/i586/strlen.S b/sysdeps/i386/i586/strlen.S
index e277126..6af9da9 100644
--- a/sysdeps/i386/i586/strlen.S
+++ b/sysdeps/i386/i586/strlen.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?)
@@ -40,10 +41,11 @@
 #define STR	PARMS
 
 	.text
-ENTRY(strlen)
+ENTRY (BP_SYM (strlen))
 	ENTER
 
 	movl STR(%esp), %eax
+	CHECK_BOUNDS_LOW (%eax, STR(%esp))
 	movl $3, %edx		/* load mask (= 3) */
 
 	andl %eax, %edx		/* separate last two bits of address */
@@ -177,9 +179,10 @@ L(3):	subl $4, %eax		/* correct too early pointer increment */
 
 	incl %eax		/* increment pointer */
 
-L(2):	subl STR(%esp), %eax	/* now compute the length as difference
+L(2):	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	subl STR(%esp), %eax	/* now compute the length as difference
 				   between start and terminating NUL
 				   character */
 	LEAVE
 	ret
-END (strlen)
+END (BP_SYM (strlen))
diff --git a/sysdeps/i386/i586/sub_n.S b/sysdeps/i386/i586/sub_n.S
index fcb13f1..0b5de92 100644
--- a/sysdeps/i386/i586/sub_n.S
+++ b/sysdeps/i386/i586/sub_n.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16		/* space for 4 saved regs */
@@ -29,7 +30,7 @@
 #define SIZE	S2+PTR_SIZE
 
 	.text
-ENTRY(__mpn_sub_n)
+ENTRY (BP_SYM (__mpn_sub_n))
 	ENTER
 
 	pushl	%edi
@@ -41,7 +42,13 @@ ENTRY(__mpn_sub_n)
 	movl	S1(%esp),%esi
 	movl	S2(%esp),%ebx
 	movl	SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %ecx	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%ebx, S2(%esp), %ecx)
+	shrl	$2, %ecx
+#endif
 	movl	(%ebx),%ebp
 
 	decl	%ecx
@@ -127,4 +134,4 @@ L(end2):
 
 	LEAVE
 	ret
-END(__mpn_sub_n)
+END (BP_SYM (__mpn_sub_n))
diff --git a/sysdeps/i386/i686/add_n.S b/sysdeps/i386/i686/add_n.S
index 45e1284..0b0684f 100644
--- a/sysdeps/i386/i686/add_n.S
+++ b/sysdeps/i386/i686/add_n.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+8		/* space for 2 saved regs */
@@ -33,7 +34,7 @@
 L(1):	addl    (%esp), %eax
 	ret
 #endif
-ENTRY(__mpn_add_n)
+ENTRY (BP_SYM (__mpn_add_n))
 	ENTER
 
 	pushl %edi
@@ -43,7 +44,13 @@ ENTRY(__mpn_add_n)
 	movl	S1(%esp),%esi
 	movl	S2(%esp),%edx
 	movl	SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %ecx	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%edx, S2(%esp), %ecx)
+	shrl	$2, %ecx
+#endif
 	movl	%ecx,%eax
 	shrl	$3,%ecx			/* compute count for unrolled loop */
 	negl	%eax
@@ -104,4 +111,4 @@ L(oop):	movl	(%esi),%eax
 
 	LEAVE
 	ret
-END(__mpn_add_n)
+END (BP_SYM (__mpn_add_n))
diff --git a/sysdeps/i386/i686/bzero.S b/sysdeps/i386/i686/bzero.S
index 34b0faa..c1e4a6d 100644
--- a/sysdeps/i386/i686/bzero.S
+++ b/sysdeps/i386/i686/bzero.S
@@ -1,3 +1,3 @@
 #define memset __bzero
 #include <sysdeps/i386/i686/memset.S>
-weak_alias (__bzero, bzero)
+weak_alias (BP_SYM (__bzero), BP_SYM (bzero))
diff --git a/sysdeps/i386/i686/memcpy.S b/sysdeps/i386/i686/memcpy.S
index 8e8cc41..cf836f4 100644
--- a/sysdeps/i386/i686/memcpy.S
+++ b/sysdeps/i386/i686/memcpy.S
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -30,7 +31,7 @@
 #define LEN	SRC+PTR_SIZE
 
 	.text
-ENTRY(memcpy)
+ENTRY (BP_SYM (memcpy))
 	ENTER
 
 	movl	LEN(%esp), %ecx
@@ -38,6 +39,9 @@ ENTRY(memcpy)
 	movl	DEST(%esp), %edi
 	movl	%esi, %edx
 	movl	SRC(%esp), %esi
+	CHECK_BOUNDS_BOTH_WIDE (%edi, DEST(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, SRC(%esp), %ecx)
+
 	cld
 	shrl	$1, %ecx
 	jnc	1f
@@ -50,7 +54,8 @@ ENTRY(memcpy)
 	movl	%eax, %edi
 	movl	%edx, %esi
 	movl	DEST(%esp), %eax
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 
 	LEAVE
 	RET_PTR
-END(memcpy)
+END (BP_SYM (memcpy))
diff --git a/sysdeps/i386/i686/mempcpy.S b/sysdeps/i386/i686/mempcpy.S
index c851d06..685c599 100644
--- a/sysdeps/i386/i686/mempcpy.S
+++ b/sysdeps/i386/i686/mempcpy.S
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -30,14 +31,16 @@
 #define LEN	SRC+PTR_SIZE
 
 	.text
-ENTRY(__mempcpy)
+ENTRY (BP_SYM (__mempcpy))
 	ENTER
 
 	movl	LEN(%esp), %ecx
 	movl	%edi, %eax
 	movl	DEST(%esp), %edi
+	CHECK_BOUNDS_BOTH_WIDE (%edi, DEST(%esp), %ecx)
 	movl	%esi, %edx
 	movl	SRC(%esp), %esi
+	CHECK_BOUNDS_BOTH_WIDE (%esi, SRC(%esp), %ecx)
 	cld
 	shrl	$1, %ecx
 	jnc	1f
@@ -49,8 +52,9 @@ ENTRY(__mempcpy)
 	movsl
 	xchgl	%edi, %eax
 	movl	%edx, %esi
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 
 	LEAVE
 	RET_PTR
-END(__mempcpy)
-weak_alias (__mempcpy, mempcpy)
+END (BP_SYM (__mempcpy))
+weak_alias (BP_SYM (__mempcpy), BP_SYM (mempcpy))
diff --git a/sysdeps/i386/i686/memset.S b/sysdeps/i386/i686/memset.S
index 74ce87b..98ba39d 100644
--- a/sysdeps/i386/i686/memset.S
+++ b/sysdeps/i386/i686/memset.S
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 /* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
@@ -38,13 +39,14 @@
 #endif
 
         .text
-ENTRY (memset)
+ENTRY (BP_SYM (memset))
 	ENTER
 
 	cld
 	pushl	%edi
 	movl	DEST(%esp), %edx
 	movl	LEN(%esp), %ecx
+	CHECK_BOUNDS_BOTH_WIDE (%edx, DEST(%esp), %ecx)
 #if BZERO_P
 	xorl	%eax, %eax	/* fill with 0 */
 #else
@@ -79,7 +81,8 @@ ENTRY (memset)
 
 1:
 #if !BZERO_P
-	movl	DEST(%esp), %eax
+	movl DEST(%esp), %eax	/* start address of destination is result */
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 #endif
 	popl	%edi
 
@@ -89,4 +92,4 @@ ENTRY (memset)
 #else
 	RET_PTR
 #endif
-END (memset)
+END (BP_SYM (memset))
diff --git a/sysdeps/i386/i686/strcmp.S b/sysdeps/i386/i686/strcmp.S
index efda851..b353db7 100644
--- a/sysdeps/i386/i686/strcmp.S
+++ b/sysdeps/i386/i686/strcmp.S
@@ -20,6 +20,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -27,27 +28,37 @@
 #define STR2	STR1+PTR_SIZE
 
         .text
-ENTRY (strcmp)
+ENTRY (BP_SYM (strcmp))
 	ENTER
 
 	movl	STR1(%esp), %ecx
 	movl	STR2(%esp), %edx
+	CHECK_BOUNDS_LOW (%ecx, STR1(%esp))
+	CHECK_BOUNDS_LOW (%edx, STR2(%esp))
 
 L(oop):	movb	(%ecx), %al
-	incl	%ecx
 	cmpb	(%edx), %al
 	jne	L(neq)
+	incl	%ecx
 	incl	%edx
 	testb	%al, %al
 	jnz	L(oop)
 
 	xorl	%eax, %eax
+	/* when strings are equal, pointers rest one beyond
+	   the end of the NUL terminators.  */
+	CHECK_BOUNDS_HIGH (%ecx, STR1(%esp), jbe)
+	CHECK_BOUNDS_HIGH (%edx, STR2(%esp), jbe)
 	jmp	L(out)
 
 L(neq):	movl	$1, %eax
-	ja	L(out)
+	ja	L(chk)
 	negl	%eax
+	/* When strings differ, pointers rest on
+	   the unequal characters.  */
+L(chk):	CHECK_BOUNDS_HIGH (%ecx, STR1(%esp), jb)
+	CHECK_BOUNDS_HIGH (%edx, STR2(%esp), jb)
 
 L(out):	LEAVE
 	ret
-END (strcmp)
+END (BP_SYM (strcmp))
diff --git a/sysdeps/i386/i686/strtok.S b/sysdeps/i386/i686/strtok.S
index 18aa7c8..96b3b5d 100644
--- a/sysdeps/i386/i686/strtok.S
+++ b/sysdeps/i386/i686/strtok.S
@@ -1,6 +1,6 @@
 /* strtok (str, delim) -- Return next DELIM separated token from STR.
    For Intel 80686.
-   Copyright (C) 1998 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -21,6 +21,8 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
+#include "bp-asm.h"
 
 /* This file can be used for three variants of the strtok function:
 
@@ -45,7 +47,7 @@
 save_ptr:
 	.space 4
 
-#define FUNCTION strtok
+#define FUNCTION BP_SYM (strtok)
 #endif
 
 	.text
@@ -55,7 +57,14 @@ save_ptr:
 	ret
 #endif
 
-ENTRY (FUNCTION)
+#define PARMS	LINKAGE		/* no space for saved regs */
+#define RTN	PARMS
+#define STR	RTN+RTN_SIZE
+#define DELIM	STR+PTR_SIZE
+#define SAVE	DELIM+PTR_SIZE
+
+ENTRY (BP_SYM (FUNCTION))
+	ENTER
 
 #if !defined USE_AS_STRTOK_R && defined PIC
 	pushl %ebx			/* Save PIC register.  */
@@ -226,4 +235,4 @@ L(return):
 L(returnNULL):
 	xorl %eax, %eax
 	jmp L(return)
-END (FUNCTION)
+END (BP_SYM (FUNCTION))
diff --git a/sysdeps/i386/i686/strtok_r.S b/sysdeps/i386/i686/strtok_r.S
index 70048db..cbaeabb 100644
--- a/sysdeps/i386/i686/strtok_r.S
+++ b/sysdeps/i386/i686/strtok_r.S
@@ -1,4 +1,4 @@
 #define FUNCTION __strtok_r
 #define USE_AS_STRTOK_R	1
 #include <sysdeps/i386/i686/strtok.S>
-weak_alias (__strtok_r, strtok_r)
+weak_alias (BP_SYM (__strtok_r), BP_SYM (strtok_r))
diff --git a/sysdeps/i386/lshift.S b/sysdeps/i386/lshift.S
index 2e4c2ca..8845665 100644
--- a/sysdeps/i386/lshift.S
+++ b/sysdeps/i386/lshift.S
@@ -19,6 +19,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+12		/* space for 3 saved regs */
@@ -28,7 +29,7 @@
 #define CNT	SIZE+4
 
 	.text
-ENTRY(__mpn_lshift)
+ENTRY (BP_SYM (__mpn_lshift))
 	ENTER
 
 	pushl	%edi
@@ -39,7 +40,12 @@ ENTRY(__mpn_lshift)
 	movl	S(%esp),%esi
 	movl	SIZE(%esp),%edx
 	movl	CNT(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %edx		/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %edx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S(%esp), %edx)
+	shrl	$2, %edx
+#endif
 	subl	$4,%esi			/* adjust s_ptr */
 
 	movl	(%esi,%edx,4),%ebx	/* read most significant limb */
@@ -84,4 +90,4 @@ L(end):	shll	%cl,%ebx		/* compute least significant limb */
 
 	LEAVE
 	ret
-END(__mpn_lshift)
+END (BP_SYM (__mpn_lshift))
diff --git a/sysdeps/i386/memchr.S b/sysdeps/i386/memchr.S
index 80b2107..9ff4126 100644
--- a/sysdeps/i386/memchr.S
+++ b/sysdeps/i386/memchr.S
@@ -32,6 +32,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+8		/* space for 2 saved regs */
@@ -41,7 +42,7 @@
 #define LEN	CHR+4
 
 	.text
-ENTRY (memchr)
+ENTRY (BP_SYM (memchr))
 	ENTER
 
 	/* Save callee-safe registers used in this function.  */
@@ -52,6 +53,7 @@ ENTRY (memchr)
 	movl STR(%esp), %eax	/* str: pointer to memory block.  */
 	movl CHR(%esp), %edx	/* c: byte we are looking for.  */
 	movl LEN(%esp), %esi	/* len: length of memory block.  */
+	CHECK_BOUNDS_BOTH_WIDE (%eax, STR(%esp), %esi)
 
 	/* If my must not test more than three characters test
 	   them one by one.  This is especially true for 0.  */
@@ -310,10 +312,17 @@ L(8):	testb %cl, %cl		/* test first byte in dword */
 	incl %eax		/* increment source pointer */
 
 	/* No further test needed we we know it is one of the four bytes.  */
-
-L(9):	popl %edi		/* pop saved registers */
+L(9):
+#if __BOUNDED_POINTERS__
+	/* If RTN pointer is phony, don't copy return value into it.  */
+	movl RTN(%esp), %ecx
+	testl %ecx, %ecx
+	jz L(pop)
+	RETURN_BOUNDED_POINTER (STR(%esp))
+#endif
+L(pop):	popl %edi		/* pop saved registers */
 	popl %esi
 
 	LEAVE
 	RET_PTR
-END (memchr)
+END (BP_SYM (memchr))
diff --git a/sysdeps/i386/memcmp.S b/sysdeps/i386/memcmp.S
index a1cbadb..8d855b9 100644
--- a/sysdeps/i386/memcmp.S
+++ b/sysdeps/i386/memcmp.S
@@ -19,6 +19,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+4	/* space for 1 saved reg */
@@ -27,7 +28,7 @@
 #define LEN	BLK2+PTR_SIZE
 
 	.text
-ENTRY (memcmp)
+ENTRY (BP_SYM (memcmp))
 	ENTER
 
 	pushl %esi		/* Save callee-safe registers.  */
@@ -37,6 +38,8 @@ ENTRY (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)
 
 	cld			/* Set direction of comparison.  */
 
@@ -64,7 +67,7 @@ L(1):	popl %esi		/* Restore registers.  */
 
 	LEAVE
 	ret
-END (memcmp)
+END (BP_SYM (memcmp))
 
 #undef bcmp
-weak_alias (memcmp, bcmp)
+weak_alias (BP_SYM (memcmp), BP_SYM (bcmp))
diff --git a/sysdeps/i386/mul_1.S b/sysdeps/i386/mul_1.S
index f5d4954..91483eb 100644
--- a/sysdeps/i386/mul_1.S
+++ b/sysdeps/i386/mul_1.S
@@ -20,6 +20,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16	/* space for 4 saved regs */
@@ -34,7 +35,7 @@
 #define s2_limb ebx
 
 	.text
-ENTRY(__mpn_mul_1)
+ENTRY (BP_SYM (__mpn_mul_1))
 	ENTER
 
 	pushl	%edi
@@ -46,7 +47,13 @@ ENTRY(__mpn_mul_1)
 	movl	S1(%esp), %s1_ptr
 	movl	SIZE(%esp), %size
 	movl	S2LIMB(%esp), %s2_limb
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %size	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %size)
+	CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %size)
+	CHECK_BOUNDS_BOTH_WIDE (%s2_limb, S2LIMB(%esp), %size)
+	shrl	$2, %size
+#endif
 	leal	(%res_ptr,%size,4), %res_ptr
 	leal	(%s1_ptr,%size,4), %s1_ptr
 	negl	%size
@@ -72,4 +79,4 @@ L(oop):
 	LEAVE
 	ret
 #undef size
-END(__mpn_mul_1)
+END (BP_SYM (__mpn_mul_1))
diff --git a/sysdeps/i386/rawmemchr.S b/sysdeps/i386/rawmemchr.S
index 89ba8d3..9042ca9 100644
--- a/sysdeps/i386/rawmemchr.S
+++ b/sysdeps/i386/rawmemchr.S
@@ -31,6 +31,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+4	/* space for 1 saved reg */
@@ -39,7 +40,7 @@
 #define CHR	STR+PTR_SIZE
 
 	.text
-ENTRY (__rawmemchr)
+ENTRY (BP_SYM (__rawmemchr))
 	ENTER
 
 	/* Save callee-safe register used in this function.  */
@@ -48,6 +49,7 @@ ENTRY (__rawmemchr)
 	/* Load parameters into registers.  */
 	movl STR(%esp), %eax
 	movl CHR(%esp), %edx
+	CHECK_BOUNDS_LOW (%eax, STR(%esp))
 
 	/* At the moment %edx contains C.  What we need for the
 	   algorithm is C in all bytes of the dword.  Avoid
@@ -213,9 +215,13 @@ L(8):	testb %cl, %cl		/* test first byte in dword */
 
 	/* No further test needed we we know it is one of the four bytes.  */
 
-L(9):	popl %edi		/* pop saved register */
+L(9):
+	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	RETURN_BOUNDED_POINTER (STR(%esp))
+	popl %edi		/* pop saved register */
 
 	LEAVE
-	ret
-END (__rawmemchr)
-weak_alias (__rawmemchr, rawmemchr)
+	RET_PTR
+END (BP_SYM (__rawmemchr))
+
+weak_alias (BP_SYM (__rawmemchr), BP_SYM (rawmemchr))
diff --git a/sysdeps/i386/rshift.S b/sysdeps/i386/rshift.S
index c8a6a9f..cb6bfc6 100644
--- a/sysdeps/i386/rshift.S
+++ b/sysdeps/i386/rshift.S
@@ -19,6 +19,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+12		/* space for 3 saved regs */
@@ -28,7 +29,7 @@
 #define CNT	SIZE+4
 
 	.text
-ENTRY(__mpn_rshift)
+ENTRY (BP_SYM (__mpn_rshift))
 	ENTER
 
 	pushl	%edi
@@ -39,7 +40,12 @@ ENTRY(__mpn_rshift)
 	movl	S(%esp),%esi
 	movl	SIZE(%esp),%edx
 	movl	CNT(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %edx		/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %edx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S(%esp), %edx)
+	shrl	$2, %edx
+#endif
 	leal	-4(%edi,%edx,4),%edi
 	leal	(%esi,%edx,4),%esi
 	negl	%edx
@@ -86,4 +92,4 @@ L(end):	shrl	%cl,%ebx		/* compute most significant limb */
 
 	LEAVE
 	ret
-END(__mpn_rshift)
+END (BP_SYM (__mpn_rshift))
diff --git a/sysdeps/i386/stpcpy.S b/sysdeps/i386/stpcpy.S
index f8267c7..f66097f 100644
--- a/sysdeps/i386/stpcpy.S
+++ b/sysdeps/i386/stpcpy.S
@@ -24,6 +24,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -32,11 +33,13 @@
 #define SRC	DEST+PTR_SIZE
 
 	.text
-ENTRY (__stpcpy)
+ENTRY (BP_SYM (__stpcpy))
 	ENTER
 
 	movl DEST(%esp), %eax
 	movl SRC(%esp), %ecx
+	CHECK_BOUNDS_LOW (%eax, DEST(%esp))
+	CHECK_BOUNDS_LOW (%ecx, SRC(%esp))
 	subl %eax, %ecx		/* magic: reduce number of loop variants
 				   to one using addressing mode */
 
@@ -82,9 +85,11 @@ L(1):	addl $4, %eax		/* increment loop counter */
 L(4):	incl %eax
 L(3):	incl %eax
 L(2):
+	CHECK_BOUNDS_HIGH (%eax, DEST(%esp), jb)
+	RETURN_BOUNDED_POINTER (DEST(%esp))
 
 	LEAVE
 	RET_PTR
-END (__stpcpy)
+END (BP_SYM (__stpcpy))
 
-weak_alias (__stpcpy, stpcpy)
+weak_alias (BP_SYM (__stpcpy), BP_SYM (stpcpy))
diff --git a/sysdeps/i386/stpncpy.S b/sysdeps/i386/stpncpy.S
index cd1a845..8ca2c9d 100644
--- a/sysdeps/i386/stpncpy.S
+++ b/sysdeps/i386/stpncpy.S
@@ -26,6 +26,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+4	/* space for 1 saved reg */
@@ -35,7 +36,7 @@
 #define LEN	SRC+PTR_SIZE
 
 	.text
-ENTRY (__stpncpy)
+ENTRY (BP_SYM (__stpncpy))
 	ENTER
 
 	pushl %esi
@@ -43,6 +44,8 @@ ENTRY (__stpncpy)
 	movl DEST(%esp), %eax
 	movl SRC(%esp), %esi
 	movl LEN(%esp), %ecx
+	CHECK_BOUNDS_LOW (%eax, DEST(%esp))
+	CHECK_BOUNDS_LOW (%esi, SRC(%esp))
 
 	subl %eax, %esi		/* magic: reduce number of loop variants
 				   to one using addressing mode */
@@ -137,10 +140,17 @@ L(8):
 L(3):	decl %ecx		/* all bytes written? */
 	jnz L(8)		/* no, then again */
 
-L(9):	popl %esi		/* restore saved register content */
+L(9):
+#if __BOUNDED_POINTERS__
+	addl %eax, %esi		/* undo magic: %esi now points beyond end of SRC */
+	CHECK_BOUNDS_HIGH (%esi, SRC(%esp), jb)
+	CHECK_BOUNDS_HIGH (%eax, DEST(%esp), jb)
+	RETURN_BOUNDED_POINTER (DEST(%esp))
+#endif
+	popl %esi		/* restore saved register content */
 
 	LEAVE
 	RET_PTR
-END (__stpncpy)
+END (BP_SYM (__stpncpy))
 
-weak_alias (__stpncpy, stpncpy)
+weak_alias (BP_SYM (__stpncpy), BP_SYM (stpncpy))
diff --git a/sysdeps/i386/strchr.S b/sysdeps/i386/strchr.S
index 0bb28bc..eeefd04 100644
--- a/sysdeps/i386/strchr.S
+++ b/sysdeps/i386/strchr.S
@@ -22,6 +22,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+4		/* space for 1 saved reg */
@@ -30,12 +31,13 @@
 #define CHR	STR+PTR_SIZE
 
 	.text
-ENTRY (strchr)
+ENTRY (BP_SYM (strchr))
 	ENTER
 
 	pushl %edi		/* Save callee-safe registers used here.  */
 	movl STR(%esp), %eax
 	movl CHR(%esp), %edx
+	CHECK_BOUNDS_LOW (%eax, STR(%esp))
 
 	/* At the moment %edx contains C.  What we need for the
 	   algorithm is C in all bytes of the dword.  Avoid
@@ -239,7 +241,8 @@ L(11):	movl (%eax), %ecx	/* get word (= 4 bytes) in question */
 	jz L(1)			/* no NUL found => restart loop */
 
 L(2):	/* Return NULL.  */
-	xorl %eax, %eax		/* load NULL in return value register */
+	xorl %eax, %eax
+	RETURN_NULL_BOUNDED_POINTER
 	popl %edi		/* restore saved register content */
 
 	LEAVE
@@ -274,10 +277,13 @@ L(7):	testb %cl, %cl		/* is first byte C? */
 	/* It must be in the fourth byte and it cannot be NUL.  */
 	incl %eax
 
-L(6):	popl %edi		/* restore saved register content */
+L(6):
+	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	RETURN_BOUNDED_POINTER (STR(%esp))
+	popl %edi		/* restore saved register content */
 
 	LEAVE
 	RET_PTR
-END (strchr)
+END (BP_SYM (strchr))
 
-weak_alias (strchr, index)
+weak_alias (BP_SYM (strchr), BP_SYM (index))
diff --git a/sysdeps/i386/strchrnul.S b/sysdeps/i386/strchrnul.S
index 6860a11..d97528d 100644
--- a/sysdeps/i386/strchrnul.S
+++ b/sysdeps/i386/strchrnul.S
@@ -23,6 +23,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+4	/* space for 1 saved reg */
@@ -31,13 +32,14 @@
 #define CHR	STR+PTR_SIZE
 
 	.text
-ENTRY (__strchrnul)
+ENTRY (BP_SYM (__strchrnul))
 	ENTER
 
 	pushl %edi		/* Save callee-safe registers used here.  */
 
 	movl STR(%esp), %eax
 	movl CHR(%esp), %edx
+	CHECK_BOUNDS_LOW (%eax, STR(%esp))
 
 	/* At the moment %edx contains CHR.  What we need for the
 	   algorithm is CHR in all bytes of the dword.  Avoid
@@ -269,10 +271,12 @@ L(7):	testb %cl, %cl		/* is first byte CHR? */
 	/* It must be in the fourth byte and it cannot be NUL.  */
 	incl %eax
 
-L(6):	popl %edi		/* restore saved register content */
+L(6):	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	RETURN_BOUNDED_POINTER (STR(%esp))
+	popl %edi		/* restore saved register content */
 
 	LEAVE
 	RET_PTR
-END (__strchrnul)
+END (BP_SYM (__strchrnul))
 
-weak_alias (__strchrnul, strchrnul)
+weak_alias (BP_SYM (__strchrnul), BP_SYM (strchrnul))
diff --git a/sysdeps/i386/strcspn.S b/sysdeps/i386/strcspn.S
index e7529a1..b3e5d23 100644
--- a/sysdeps/i386/strcspn.S
+++ b/sysdeps/i386/strcspn.S
@@ -23,6 +23,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -30,11 +31,12 @@
 #define STOP	STR+PTR_SIZE
 
 	.text
-ENTRY (strcspn)
+ENTRY (BP_SYM (strcspn))
 	ENTER
 
 	movl STR(%esp), %edx
 	movl STOP(%esp), %eax
+	CHECK_BOUNDS_LOW (%edx, STR(%esp))
 
 	/* First we create a table with flags for all possible characters.
 	   For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
@@ -169,11 +171,11 @@ L(3):	addl $4, %eax		/* adjust pointer for full loop round */
 L(6):	incl %eax
 L(5):	incl %eax
 
-L(4):	subl %edx, %eax		/* we have to return the number of valid
+L(4):	addl $256, %esp		/* remove stopset */
+	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	subl %edx, %eax		/* we have to return the number of valid
 				   characters, so compute distance to first
 				   non-valid character */
-	addl $256, %esp		/* remove stopset */
-
 	LEAVE
 	ret
-END (strcspn)
+END (BP_SYM (strcspn))
diff --git a/sysdeps/i386/strpbrk.S b/sysdeps/i386/strpbrk.S
index 59d6554..dab1700 100644
--- a/sysdeps/i386/strpbrk.S
+++ b/sysdeps/i386/strpbrk.S
@@ -23,6 +23,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -31,11 +32,12 @@
 #define STOP	STR+PTR_SIZE
 
 	.text
-ENTRY (strpbrk)
+ENTRY (BP_SYM (strpbrk))
 	ENTER
 
 	movl STR(%esp), %edx
 	movl STOP(%esp), %eax
+	CHECK_BOUNDS_LOW (%edx, STR(%esp))
 
 	/* First we create a table with flags for all possible characters.
 	   For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
@@ -172,10 +174,17 @@ L(5):	incl %eax
 
 L(4):	addl $256, %esp		/* remove stopset */
 
+	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
 	orb %cl, %cl		/* was last character NUL? */
-	jnz L(7)			/* no => return pointer */
-	xorl %eax, %eax		/* return NULL */
+	jnz L(7)		/* no => return pointer */
+	xorl %eax, %eax
+	RETURN_NULL_BOUNDED_POINTER
 
-L(7):	LEAVE
+	LEAVE
 	RET_PTR
-END (strpbrk)
+
+L(7):	RETURN_BOUNDED_POINTER (STR(%esp))
+
+	LEAVE
+	RET_PTR
+END (BP_SYM (strpbrk))
diff --git a/sysdeps/i386/strrchr.S b/sysdeps/i386/strrchr.S
index 328d8b0..9f4c27c 100644
--- a/sysdeps/i386/strrchr.S
+++ b/sysdeps/i386/strrchr.S
@@ -22,6 +22,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+8	/* space for 2 saved regs */
@@ -30,7 +31,7 @@
 #define CHR	STR+PTR_SIZE
 
 	.text
-ENTRY (strrchr)
+ENTRY (BP_SYM (strrchr))
 	ENTER
 
 	pushl %edi		/* Save callee-safe registers used here.  */
@@ -39,6 +40,7 @@ ENTRY (strrchr)
 	xorl %eax, %eax
 	movl STR(%esp), %esi
 	movl CHR(%esp), %ecx
+	CHECK_BOUNDS_LOW (%esi, STR(%esp))
 
 	/* At the moment %ecx contains C.  What we need for the
 	   algorithm is C in all bytes of the dword.  Avoid
@@ -319,11 +321,13 @@ L(26):	testb %dl, %dl		/* is third byte == NUL */
 	jne L(2)		/* no => skip */
 	leal 3(%esi), %eax	/* store address as result */
 
-L(2):	popl %esi		/* restore saved register content */
+L(2):	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	RETURN_BOUNDED_POINTER (STR(%esp))
+	popl %esi		/* restore saved register content */
 	popl %edi
 
 	LEAVE
 	RET_PTR
-END (strrchr)
+END (BP_SYM (strrchr))
 
-weak_alias (strrchr, rindex)
+weak_alias (BP_SYM (strrchr), BP_SYM (rindex))
diff --git a/sysdeps/i386/strspn.S b/sysdeps/i386/strspn.S
index cfd11f0..7d8c82b 100644
--- a/sysdeps/i386/strspn.S
+++ b/sysdeps/i386/strspn.S
@@ -23,6 +23,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE		/* no space for saved regs */
@@ -30,11 +31,12 @@
 #define SKIP	STR+PTR_SIZE
 
 	.text
-ENTRY (strspn)
+ENTRY (BP_SYM (strspn))
 	ENTER
 
 	movl STR(%esp), %edx
 	movl SKIP(%esp), %eax
+	CHECK_BOUNDS_LOW (%edx, STR(%esp))
 
 	/* First we create a table with flags for all possible characters.
 	   For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
@@ -169,11 +171,11 @@ L(3):	addl $4, %eax		/* adjust pointer for full loop round */
 L(6):	incl %eax
 L(5):	incl %eax
 
-L(4):	subl %edx, %eax		/* we have to return the number of valid
+L(4):	addl $256, %esp		/* remove stopset */
+	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	subl %edx, %eax		/* we have to return the number of valid
 				   characters, so compute distance to first
 				   non-valid character */
-	addl $256, %esp		/* remove stopset */
-
 	LEAVE
 	ret
-END (strspn)
+END (BP_SYM (strspn))
diff --git a/sysdeps/i386/strtok.S b/sysdeps/i386/strtok.S
index 6fa6cc2..47924b2 100644
--- a/sysdeps/i386/strtok.S
+++ b/sysdeps/i386/strtok.S
@@ -21,6 +21,7 @@
 
 #include <sysdep.h>
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 /* This file can be used for three variants of the strtok function:
@@ -56,12 +57,13 @@ save_ptr:
 #define SAVE	DELIM+PTR_SIZE
 
 	.text
-
-ENTRY (FUNCTION)
+ENTRY (BP_SYM (FUNCTION))
 	ENTER
 
 	movl STR(%esp), %edx
 	movl DELIM(%esp), %eax
+	CHECK_BOUNDS_LOW (%edx, STR(%esp))
+	CHECK_BOUNDS_LOW (%eax, DELIM(%esp))
 
 #if !defined (USE_AS_STRTOK_R) && defined (PIC)
 	pushl %ebx			/* Save PIC register.  */
@@ -169,17 +171,17 @@ L(0):
 
 L(2):	movb (%eax), %cl	/* get byte from stopset */
 	testb %cl, %cl		/* is NUL char? */
-	jz L(1)			/* yes => start compare loop */
+	jz L(1_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)			/* yes => start compare loop */
+	jz L(1_2)		/* 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)			/* yes => start compare loop */
+	jz L(1_3)		/* yes => start compare loop */
 	movb %cl, (%esp,%ecx)	/* set corresponding byte in stopset table */
 
 	movb 3(%eax), %cl	/* get byte from stopset */
@@ -188,7 +190,16 @@ L(2):	movb (%eax), %cl	/* get byte from stopset */
 	testb $0xff, %cl	/* is NUL char? */
 	jnz L(2)		/* no => process next dword from stopset */
 
-L(1):	leal -4(%edx), %eax	/* prepare loop */
+#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), jb)
+#else
+L(1_3):; L(1_2):; L(1_1):	/* fall through */
+#endif
+	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
@@ -275,10 +286,19 @@ L(return):
 	popl %ebx
 # endif
 #endif
+#if __BOUNDED_POINTERS__
+	testl %eax, %eax
+	jz L(ret)
+	CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+	RETURN_BOUNDED_POINTER (STR(%esp))
+L(ret):
+#endif
 	LEAVE
 	RET_PTR
 
 L(returnNULL):
 	xorl %eax, %eax
+	RETURN_NULL_BOUNDED_POINTER
 	jmp L(return)
-END (FUNCTION)
+
+END (BP_SYM (FUNCTION))
diff --git a/sysdeps/i386/strtok_r.S b/sysdeps/i386/strtok_r.S
index c048e41..621093a 100644
--- a/sysdeps/i386/strtok_r.S
+++ b/sysdeps/i386/strtok_r.S
@@ -1,4 +1,4 @@
 #define FUNCTION __strtok_r
 #define USE_AS_STRTOK_R	1
 #include <sysdeps/i386/strtok.S>
-weak_alias (__strtok_r, strtok_r)
+weak_alias (BP_SYM (__strtok_r), BP_SYM (strtok_r))
diff --git a/sysdeps/i386/sub_n.S b/sysdeps/i386/sub_n.S
index 94cb070..55f288e 100644
--- a/sysdeps/i386/sub_n.S
+++ b/sysdeps/i386/sub_n.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+8		/* space for 2 saved regs */
@@ -29,7 +30,7 @@
 #define SIZE	S2+PTR_SIZE
 
 	.text
-ENTRY(__mpn_sub_n)
+ENTRY (BP_SYM (__mpn_sub_n))
 	ENTER
 
 	pushl %edi
@@ -39,7 +40,13 @@ ENTRY(__mpn_sub_n)
 	movl	S1(%esp),%esi
 	movl	S2(%esp),%edx
 	movl	SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %ecx	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+	CHECK_BOUNDS_BOTH_WIDE (%edx, S2(%esp), %ecx)
+	shrl	$2, %ecx
+#endif
 	movl	%ecx,%eax
 	shrl	$3,%ecx			/* compute count for unrolled loop */
 	negl	%eax
@@ -103,4 +110,4 @@ L(oop):	movl	(%esi),%eax
 
 	LEAVE
 	ret
-END(__mpn_sub_n)
+END (BP_SYM (__mpn_sub_n))
diff --git a/sysdeps/i386/submul_1.S b/sysdeps/i386/submul_1.S
index b3c4e42..56a015e 100644
--- a/sysdeps/i386/submul_1.S
+++ b/sysdeps/i386/submul_1.S
@@ -20,6 +20,7 @@
 
 #include "sysdep.h"
 #include "asm-syntax.h"
+#include "bp-sym.h"
 #include "bp-asm.h"
 
 #define PARMS	LINKAGE+16	/* space for 4 saved regs */
@@ -34,7 +35,7 @@
 #define s2_limb ebx
 
 	.text
-ENTRY(__mpn_submul_1)
+ENTRY (BP_SYM (__mpn_submul_1))
 	ENTER
 
 	pushl	%edi
@@ -46,7 +47,13 @@ ENTRY(__mpn_submul_1)
 	movl	S1(%esp), %s1_ptr
 	movl	SIZE(%esp), %sizeP
 	movl	S2LIMB(%esp), %s2_limb
-
+#if __BOUNDED_POINTERS__
+	shll	$2, %sizeP	/* convert limbs to bytes */
+	CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %sizeP)
+	CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %sizeP)
+	CHECK_BOUNDS_BOTH_WIDE (%s2_limb, S2LIMB(%esp), %sizeP)
+	shrl	$2, %sizeP
+#endif
 	leal	(%res_ptr,%sizeP,4), %res_ptr
 	leal	(%s1_ptr,%sizeP,4), %s1_ptr
 	negl	%sizeP
@@ -72,4 +79,4 @@ L(oop):
 
 	LEAVE
 	ret
-END(__mpn_submul_1)
+END (BP_SYM (__mpn_submul_1))