diff options
Diffstat (limited to 'arch/x86_64/lib/csum-copy.S')
| -rw-r--r-- | arch/x86_64/lib/csum-copy.S | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/arch/x86_64/lib/csum-copy.S b/arch/x86_64/lib/csum-copy.S index 72fd55ee896e..f0dba36578ea 100644 --- a/arch/x86_64/lib/csum-copy.S +++ b/arch/x86_64/lib/csum-copy.S @@ -5,8 +5,9 @@ * License. See the file COPYING in the main directory of this archive * for more details. No warranty for anything given at all. */ - #include <linux/linkage.h> - #include <asm/errno.h> +#include <linux/linkage.h> +#include <asm/dwarf2.h> +#include <asm/errno.h> /* * Checksum copy with exception handling. @@ -53,19 +54,24 @@ .endm - .globl csum_partial_copy_generic - .p2align 4 -csum_partial_copy_generic: +ENTRY(csum_partial_copy_generic) + CFI_STARTPROC cmpl $3*64,%edx jle .Lignore .Lignore: subq $7*8,%rsp + CFI_ADJUST_CFA_OFFSET 7*8 movq %rbx,2*8(%rsp) + CFI_REL_OFFSET rbx, 2*8 movq %r12,3*8(%rsp) + CFI_REL_OFFSET r12, 3*8 movq %r14,4*8(%rsp) + CFI_REL_OFFSET r14, 4*8 movq %r13,5*8(%rsp) + CFI_REL_OFFSET r13, 5*8 movq %rbp,6*8(%rsp) + CFI_REL_OFFSET rbp, 6*8 movq %r8,(%rsp) movq %r9,1*8(%rsp) @@ -208,14 +214,22 @@ csum_partial_copy_generic: addl %ebx,%eax adcl %r9d,%eax /* carry */ + CFI_REMEMBER_STATE .Lende: movq 2*8(%rsp),%rbx + CFI_RESTORE rbx movq 3*8(%rsp),%r12 + CFI_RESTORE r12 movq 4*8(%rsp),%r14 + CFI_RESTORE r14 movq 5*8(%rsp),%r13 + CFI_RESTORE r13 movq 6*8(%rsp),%rbp + CFI_RESTORE rbp addq $7*8,%rsp + CFI_ADJUST_CFA_OFFSET -7*8 ret + CFI_RESTORE_STATE /* Exception handlers. Very simple, zeroing is done in the wrappers */ .Lbad_source: @@ -231,3 +245,5 @@ csum_partial_copy_generic: jz .Lende movl $-EFAULT,(%rax) jmp .Lende + CFI_ENDPROC +ENDPROC(csum_partial_copy_generic) |