5 files changed, 104 insertions, 41 deletions

diff --git a/arch/i386/lib/bitops.c b/arch/i386/lib/bitops.c
index 97db3853dc82..afd0045595d4 100644
--- a/arch/i386/lib/bitops.c
+++ b/arch/i386/lib/bitops.c
@@ -43,7 +43,7 @@ EXPORT_SYMBOL(find_next_bit);
  */
 int find_next_zero_bit(const unsigned long *addr, int size, int offset)
 {
-        unsigned long * p = ((unsigned long *) addr) + (offset >> 5);
+        const unsigned long *p = addr + (offset >> 5);
         int set = 0, bit = offset & 31, res;
 
         if (bit) {
@@ -64,7 +64,7 @@ int find_next_zero_bit(const unsigned long *addr, int size, int offset)
         /*
          * No zero yet, search remaining full bytes for a zero
          */
-        res = find_first_zero_bit (p, size - 32 * (p - (unsigned long *) addr));
+        res = find_first_zero_bit(p, size - 32 * (p - addr));
         return (offset + set + res);
 }
 EXPORT_SYMBOL(find_next_zero_bit);
diff --git a/arch/i386/lib/checksum.S b/arch/i386/lib/checksum.S
index 75ffd02654fc..adbccd0bbb78 100644
--- a/arch/i386/lib/checksum.S
+++ b/arch/i386/lib/checksum.S
@@ -25,6 +25,8 @@
  *              2 of the License, or (at your option) any later version.
  */
 
+#include <linux/linkage.h>
+#include <asm/dwarf2.h>
 #include <asm/errno.h>
                                 
 /*
@@ -36,8 +38,6 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
  */
                 
 .text
-.align 4
-.globl csum_partial                                                             
                 
 #ifndef CONFIG_X86_USE_PPRO_CHECKSUM
 
@@ -48,9 +48,14 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
            * Fortunately, it is easy to convert 2-byte alignment to 4-byte
            * alignment for the unrolled loop.
            */           
-csum_partial:   
+ENTRY(csum_partial)
+        CFI_STARTPROC
         pushl %esi
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET esi, 0
         pushl %ebx
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET ebx, 0
         movl 20(%esp),%eax      # Function arg: unsigned int sum
         movl 16(%esp),%ecx      # Function arg: int len
         movl 12(%esp),%esi      # Function arg: unsigned char *buff
@@ -128,16 +133,27 @@ csum_partial:
         roll $8, %eax
 8:
         popl %ebx
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE ebx
         popl %esi
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE esi
         ret
+        CFI_ENDPROC
+ENDPROC(csum_partial)
 
 #else
 
 /* Version for PentiumII/PPro */
 
-csum_partial:
+ENTRY(csum_partial)
+        CFI_STARTPROC
         pushl %esi
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET esi, 0
         pushl %ebx
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET ebx, 0
         movl 20(%esp),%eax      # Function arg: unsigned int sum
         movl 16(%esp),%ecx      # Function arg: int len
         movl 12(%esp),%esi      # Function arg: const unsigned char *buf
@@ -245,8 +261,14 @@ csum_partial:
         roll $8, %eax
 90: 
         popl %ebx
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE ebx
         popl %esi
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE esi
         ret
+        CFI_ENDPROC
+ENDPROC(csum_partial)
                                 
 #endif
 
@@ -278,19 +300,24 @@ unsigned int csum_partial_copy_generic (const char *src, char *dst,
         .long 9999b, 6002f      ;       \
         .previous
 
-.align 4
-.globl csum_partial_copy_generic
-                                
 #ifndef CONFIG_X86_USE_PPRO_CHECKSUM
 
 #define ARGBASE 16              
 #define FP              12
                 
-csum_partial_copy_generic:
+ENTRY(csum_partial_copy_generic)
+        CFI_STARTPROC
         subl  $4,%esp   
+        CFI_ADJUST_CFA_OFFSET 4
         pushl %edi
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET edi, 0
         pushl %esi
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET esi, 0
         pushl %ebx
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET ebx, 0
         movl ARGBASE+16(%esp),%eax      # sum
         movl ARGBASE+12(%esp),%ecx      # len
         movl ARGBASE+4(%esp),%esi       # src
@@ -400,10 +427,19 @@ DST(	movb %cl, (%edi)	)
 .previous
 
         popl %ebx
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE ebx
         popl %esi
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE esi
         popl %edi
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE edi
         popl %ecx                       # equivalent to addl $4,%esp
+        CFI_ADJUST_CFA_OFFSET -4
         ret     
+        CFI_ENDPROC
+ENDPROC(csum_partial_copy_generic)
 
 #else
 
@@ -421,10 +457,17 @@ DST(	movb %cl, (%edi)	)
 
 #define ARGBASE 12
                 
-csum_partial_copy_generic:
+ENTRY(csum_partial_copy_generic)
+        CFI_STARTPROC
         pushl %ebx
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET ebx, 0
         pushl %edi
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET edi, 0
         pushl %esi
+        CFI_ADJUST_CFA_OFFSET 4
+        CFI_REL_OFFSET esi, 0
         movl ARGBASE+4(%esp),%esi       #src
         movl ARGBASE+8(%esp),%edi       #dst    
         movl ARGBASE+12(%esp),%ecx      #len
@@ -485,9 +528,17 @@ DST(	movb %dl, (%edi)         )
 .previous                               
 
         popl %esi
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE esi
         popl %edi
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE edi
         popl %ebx
+        CFI_ADJUST_CFA_OFFSET -4
+        CFI_RESTORE ebx
         ret
+        CFI_ENDPROC
+ENDPROC(csum_partial_copy_generic)
                                 
 #undef ROUND
 #undef ROUND1           
diff --git a/arch/i386/lib/getuser.S b/arch/i386/lib/getuser.S
index 62d7f178a326..6d84b53f12a2 100644
--- a/arch/i386/lib/getuser.S
+++ b/arch/i386/lib/getuser.S
@@ -8,6 +8,8 @@
  * return an error value in addition to the "real"
  * return value.
  */
+#include <linux/linkage.h>
+#include <asm/dwarf2.h>
 #include <asm/thread_info.h>
 
 
@@ -24,19 +26,19 @@
  */
 
 .text
-.align 4
-.globl __get_user_1
-__get_user_1:
+ENTRY(__get_user_1)
+        CFI_STARTPROC
         GET_THREAD_INFO(%edx)
         cmpl TI_addr_limit(%edx),%eax
         jae bad_get_user
 1:      movzbl (%eax),%edx
         xorl %eax,%eax
         ret
+        CFI_ENDPROC
+ENDPROC(__get_user_1)
 
-.align 4
-.globl __get_user_2
-__get_user_2:
+ENTRY(__get_user_2)
+        CFI_STARTPROC
         addl $1,%eax
         jc bad_get_user
         GET_THREAD_INFO(%edx)
@@ -45,10 +47,11 @@ __get_user_2:
 2:      movzwl -1(%eax),%edx
         xorl %eax,%eax
         ret
+        CFI_ENDPROC
+ENDPROC(__get_user_2)
 
-.align 4
-.globl __get_user_4
-__get_user_4:
+ENTRY(__get_user_4)
+        CFI_STARTPROC
         addl $3,%eax
         jc bad_get_user
         GET_THREAD_INFO(%edx)
@@ -57,11 +60,16 @@ __get_user_4:
 3:      movl -3(%eax),%edx
         xorl %eax,%eax
         ret
+        CFI_ENDPROC
+ENDPROC(__get_user_4)
 
 bad_get_user:
+        CFI_STARTPROC
         xorl %edx,%edx
         movl $-14,%eax
         ret
+        CFI_ENDPROC
+END(bad_get_user)
 
 .section __ex_table,"a"
         .long 1b,bad_get_user
diff --git a/arch/i386/lib/putuser.S b/arch/i386/lib/putuser.S
index a32d9f570f48..f58fba109d18 100644
--- a/arch/i386/lib/putuser.S
+++ b/arch/i386/lib/putuser.S
@@ -8,6 +8,8 @@
  * return an error value in addition to the "real"
  * return value.
  */
+#include <linux/linkage.h>
+#include <asm/dwarf2.h>
 #include <asm/thread_info.h>
 
 
@@ -23,23 +25,28 @@
  * as they get called from within inline assembly.
  */
 
-#define ENTER   pushl %ebx ; GET_THREAD_INFO(%ebx)
-#define EXIT    popl %ebx ; ret
+#define ENTER   CFI_STARTPROC ; \
+                pushl %ebx ; \
+                CFI_ADJUST_CFA_OFFSET 4 ; \
+                CFI_REL_OFFSET ebx, 0 ; \
+                GET_THREAD_INFO(%ebx)
+#define EXIT    popl %ebx ; \
+                CFI_ADJUST_CFA_OFFSET -4 ; \
+                CFI_RESTORE ebx ; \
+                ret ; \
+                CFI_ENDPROC
 
 .text
-.align 4
-.globl __put_user_1
-__put_user_1:
+ENTRY(__put_user_1)
         ENTER
         cmpl TI_addr_limit(%ebx),%ecx
         jae bad_put_user
 1:      movb %al,(%ecx)
         xorl %eax,%eax
         EXIT
+ENDPROC(__put_user_1)
 
-.align 4
-.globl __put_user_2
-__put_user_2:
+ENTRY(__put_user_2)
         ENTER
         movl TI_addr_limit(%ebx),%ebx
         subl $1,%ebx
@@ -48,10 +55,9 @@ __put_user_2:
 2:      movw %ax,(%ecx)
         xorl %eax,%eax
         EXIT
+ENDPROC(__put_user_2)
 
-.align 4
-.globl __put_user_4
-__put_user_4:
+ENTRY(__put_user_4)
         ENTER
         movl TI_addr_limit(%ebx),%ebx
         subl $3,%ebx
@@ -60,10 +66,9 @@ __put_user_4:
 3:      movl %eax,(%ecx)
         xorl %eax,%eax
         EXIT
+ENDPROC(__put_user_4)
 
-.align 4
-.globl __put_user_8
-__put_user_8:
+ENTRY(__put_user_8)
         ENTER
         movl TI_addr_limit(%ebx),%ebx
         subl $7,%ebx
@@ -73,10 +78,16 @@ __put_user_8:
 5:      movl %edx,4(%ecx)
         xorl %eax,%eax
         EXIT
+ENDPROC(__put_user_8)
 
 bad_put_user:
+        CFI_STARTPROC simple
+        CFI_DEF_CFA esp, 2*4
+        CFI_OFFSET eip, -1*4
+        CFI_OFFSET ebx, -2*4
         movl $-14,%eax
         EXIT
+END(bad_put_user)
 
 .section __ex_table,"a"
         .long 1b,bad_put_user
diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c
index 086b3726862a..9f38b12b4af1 100644
--- a/arch/i386/lib/usercopy.c
+++ b/arch/i386/lib/usercopy.c
@@ -716,7 +716,6 @@ do {									\
 unsigned long __copy_to_user_ll(void __user *to, const void *from,
                                 unsigned long n)
 {
-        BUG_ON((long) n < 0);
 #ifndef CONFIG_X86_WP_WORKS_OK
         if (unlikely(boot_cpu_data.wp_works_ok == 0) &&
                         ((unsigned long )to) < TASK_SIZE) {
@@ -785,7 +784,6 @@ EXPORT_SYMBOL(__copy_to_user_ll);
 unsigned long __copy_from_user_ll(void *to, const void __user *from,
                                         unsigned long n)
 {
-        BUG_ON((long)n < 0);
         if (movsl_is_ok(to, from, n))
                 __copy_user_zeroing(to, from, n);
         else
@@ -797,7 +795,6 @@ EXPORT_SYMBOL(__copy_from_user_ll);
 unsigned long __copy_from_user_ll_nozero(void *to, const void __user *from,
                                          unsigned long n)
 {
-        BUG_ON((long)n < 0);
         if (movsl_is_ok(to, from, n))
                 __copy_user(to, from, n);
         else
@@ -810,7 +807,6 @@ EXPORT_SYMBOL(__copy_from_user_ll_nozero);
 unsigned long __copy_from_user_ll_nocache(void *to, const void __user *from,
                                         unsigned long n)
 {
-        BUG_ON((long)n < 0);
 #ifdef CONFIG_X86_INTEL_USERCOPY
         if ( n > 64 && cpu_has_xmm2)
                 n = __copy_user_zeroing_intel_nocache(to, from, n);
@@ -825,7 +821,6 @@ unsigned long __copy_from_user_ll_nocache(void *to, const void __user *from,
 unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *from,
                                         unsigned long n)
 {
-        BUG_ON((long)n < 0);
 #ifdef CONFIG_X86_INTEL_USERCOPY
         if ( n > 64 && cpu_has_xmm2)
                 n = __copy_user_intel_nocache(to, from, n);
@@ -853,7 +848,6 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr
 unsigned long
 copy_to_user(void __user *to, const void *from, unsigned long n)
 {
-        BUG_ON((long) n < 0);
         if (access_ok(VERIFY_WRITE, to, n))
                 n = __copy_to_user(to, from, n);
         return n;
@@ -879,7 +873,6 @@ EXPORT_SYMBOL(copy_to_user);
 unsigned long
 copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-        BUG_ON((long) n < 0);
         if (access_ok(VERIFY_READ, from, n))
                 n = __copy_from_user(to, from, n);
         else