diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2007-07-12 18:26:36 +0000 |
| commit | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch) | |
| tree | 2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/i386/i586/lshift.S | |
| parent | 7d58530341304d403a6626d7f7a1913165fe2f32 (diff) | |
| download | glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.xz glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.zip | |
2.5-18.1
Diffstat (limited to 'sysdeps/i386/i586/lshift.S')
| -rw-r--r-- | sysdeps/i386/i586/lshift.S | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/sysdeps/i386/i586/lshift.S b/sysdeps/i386/i586/lshift.S index 59d587934e..bc73ee6f3c 100644 --- a/sysdeps/i386/i586/lshift.S +++ b/sysdeps/i386/i586/lshift.S @@ -1,5 +1,5 @@ /* Pentium optimized __mpn_lshift -- - Copyright (C) 1992, 94, 95, 96, 97, 98, 2000 Free Software Foundation, Inc. + Copyright (C) 1992,94,95,96,97,98,2000,2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -33,13 +33,21 @@ ENTRY (BP_SYM (__mpn_lshift)) ENTER pushl %edi + cfi_adjust_cfa_offset (4) pushl %esi + cfi_adjust_cfa_offset (4) pushl %ebp + cfi_adjust_cfa_offset (4) + cfi_rel_offset (ebp, 0) pushl %ebx + cfi_adjust_cfa_offset (4) movl RES(%esp),%edi + cfi_rel_offset (edi, 12) movl S(%esp),%esi + cfi_rel_offset (esi, 8) movl SIZE(%esp),%ebx + cfi_rel_offset (ebx, 0) movl CNT(%esp),%ecx #if __BOUNDED_POINTERS__ shll $2, %ebx /* convert limbs to bytes */ @@ -67,9 +75,11 @@ L(normal): xorl %eax,%eax shldl %cl,%edx,%eax /* compute carry limb */ pushl %eax /* push carry limb onto stack */ + cfi_adjust_cfa_offset (4) decl %ebx pushl %ebx + cfi_adjust_cfa_offset (4) shrl $3,%ebx jz L(end) @@ -113,6 +123,7 @@ L(oop): movl -28(%edi),%eax /* fetch destination cache line */ jnz L(oop) L(end): popl %ebx + cfi_adjust_cfa_offset (-4) andl $7,%ebx jz L(end2) L(oop2): @@ -130,11 +141,20 @@ L(end2): movl %edx,(%edi) /* store it */ popl %eax /* pop carry limb */ + cfi_adjust_cfa_offset (-4) popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) popl %ebp + cfi_adjust_cfa_offset (-4) + cfi_restore (ebp) popl %esi + cfi_adjust_cfa_offset (-4) + cfi_restore (esi) popl %edi + cfi_adjust_cfa_offset (-4) + cfi_restore (edi) LEAVE ret @@ -144,12 +164,18 @@ L(end2): function is documented to work for overlapping source and destination. */ + cfi_adjust_cfa_offset (16) + cfi_rel_offset (edi, 12) + cfi_rel_offset (esi, 8) + cfi_rel_offset (ebp, 4) + cfi_rel_offset (ebx, 0) L(special): movl (%esi),%edx addl $4,%esi decl %ebx pushl %ebx + cfi_adjust_cfa_offset (4) shrl $3,%ebx addl %edx,%edx @@ -199,6 +225,7 @@ L(Loop): L(Lend): popl %ebx + cfi_adjust_cfa_offset (-4) sbbl %eax,%eax /* save carry in %eax */ andl $7,%ebx jz L(Lend2) @@ -223,9 +250,17 @@ L(L1): movl %edx,(%edi) /* store last limb */ negl %eax popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) popl %ebp + cfi_adjust_cfa_offset (-4) + cfi_restore (ebp) popl %esi + cfi_adjust_cfa_offset (-4) + cfi_restore (esi) popl %edi + cfi_adjust_cfa_offset (-4) + cfi_restore (edi) LEAVE ret |