diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/mmap64.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/mmap64.S | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/mmap64.S b/sysdeps/unix/sysv/linux/i386/mmap64.S index 3a03335814..f53e6e8c68 100644 --- a/sysdeps/unix/sysv/linux/i386/mmap64.S +++ b/sysdeps/unix/sysv/linux/i386/mmap64.S @@ -1,4 +1,5 @@ -/* Copyright (C) 1995,96,97,98,99,2000,2002 Free Software Foundation, Inc. +/* Copyright (C) 1995,96,97,98,99,2000,2002,2005,2006 + 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 @@ -20,7 +21,7 @@ #include <bp-sym.h> #include <bp-asm.h> -#include "kernel-features.h" +#include <kernel-features.h> #define EINVAL 22 #define ENOSYS 38 @@ -42,9 +43,13 @@ ENTRY (BP_SYM (__mmap64)) /* Save registers. */ pushl %ebp + cfi_adjust_cfa_offset (4) pushl %ebx + cfi_adjust_cfa_offset (4) pushl %esi + cfi_adjust_cfa_offset (4) pushl %edi + cfi_adjust_cfa_offset (4) movl OFFLO(%esp), %edx movl OFFHI(%esp), %ecx @@ -54,12 +59,16 @@ ENTRY (BP_SYM (__mmap64)) shrl $12, %ecx jne L(einval) movl %edx, %ebp + cfi_rel_offset (ebp, 12) movl ADDR(%esp), %ebx + cfi_rel_offset (ebx, 8) movl LEN(%esp), %ecx movl PROT(%esp), %edx movl FLAGS(%esp), %esi + cfi_rel_offset (esi, 4) movl FD(%esp), %edi + cfi_rel_offset (edi, 0) movl $SYS_ify(mmap2), %eax /* System call number in %eax. */ @@ -69,9 +78,17 @@ L(do_syscall): /* Restore registers. */ popl %edi + cfi_adjust_cfa_offset (-4) + cfi_restore (edi) popl %esi + cfi_adjust_cfa_offset (-4) + cfi_restore (esi) popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) popl %ebp + cfi_adjust_cfa_offset (-4) + cfi_restore (ebp) #ifndef __ASSUME_MMAP2_SYSCALL 2: @@ -87,12 +104,25 @@ L(do_syscall): L(pseudo_end): ret + cfi_adjust_cfa_offset (16) + cfi_rel_offset (ebp, 12) + cfi_rel_offset (ebx, 8) + cfi_rel_offset (esi, 4) + cfi_rel_offset (edi, 0) /* This means the offset value is too large. */ L(einval): popl %edi + cfi_adjust_cfa_offset (-4) + cfi_restore (edi) popl %esi + cfi_adjust_cfa_offset (-4) + cfi_restore (esi) popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) popl %ebp + cfi_adjust_cfa_offset (-4) + cfi_restore (ebp) movl $-EINVAL, %eax jmp SYSCALL_ERROR_LABEL #endif @@ -101,6 +131,7 @@ L(einval): 3: /* Save registers. */ movl %ebx, %edx + cfi_register (ebx, edx) cmpl $0, OFFHI-SVRSP(%esp) jne L(einval2) @@ -114,6 +145,7 @@ L(einval): /* Restore registers. */ movl %edx, %ebx + cfi_restore (ebx) /* If 0 > %eax > -4096 there was an error. */ cmpl $-4096, %eax @@ -125,8 +157,10 @@ L(pseudo_end): #endif ret + cfi_register (ebx, edx) L(einval2): movl %edx, %ebx + cfi_restore (ebx) movl $-EINVAL, %eax jmp SYSCALL_ERROR_LABEL #endif |