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author | Jan Beulich <jbeulich@novell.com> | 2007-05-02 19:27:05 +0200 |
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committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:05 +0200 |
commit | 00e065ea587363e538d9624eea8cacad12cb7397 (patch) | |
tree | 137111dc6dab1fff399c482d189e8444303f8152 /arch | |
parent | 3755090722e5a9c44780e5461ed9e49ab542bc73 (diff) | |
download | op-kernel-dev-00e065ea587363e538d9624eea8cacad12cb7397.zip op-kernel-dev-00e065ea587363e538d9624eea8cacad12cb7397.tar.gz |
[PATCH] i386: Add dwarf2 annotations to *_user and checksum functions
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/i386/lib/checksum.S | 69 | ||||
-rw-r--r-- | arch/i386/lib/getuser.S | 26 | ||||
-rw-r--r-- | arch/i386/lib/putuser.S | 39 |
3 files changed, 102 insertions, 32 deletions
diff --git a/arch/i386/lib/checksum.S b/arch/i386/lib/checksum.S index 75ffd02..adbccd0 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 62d7f17..6d84b53 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 a32d9f5..f58fba1 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 |