| /* Copyright (C) 2001, 2002, 2004, 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 |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <sysdep.h> |
| #define _ERRNO_H |
| #include <bits/errno.h> |
| #include <bp-asm.h> |
| #include <bp-sym.h> |
| #include <tls.h> |
| |
| #ifdef IS_IN_rtld |
| # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */ |
| #endif |
| |
| .globl C_SYMBOL_NAME(errno) |
| .globl syscall_error |
| |
| #undef syscall_error |
| #ifdef NO_UNDERSCORES |
| __syscall_error: |
| #else |
| syscall_error: |
| #endif |
| #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
| /* We translate the system's EWOULDBLOCK error into EAGAIN. |
| The GNU C library always defines EWOULDBLOCK==EAGAIN. |
| EWOULDBLOCK_sys is the original number. */ |
| cmpq $EWOULDBLOCK_sys, %rax /* Is it the old EWOULDBLOCK? */ |
| jne notb /* Branch if not. */ |
| movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ |
| notb: |
| #endif |
| #if USE___THREAD |
| # ifdef PIC |
| movq C_SYMBOL_NAME(errno@GOTTPOFF)(%rip), %rcx |
| movl %eax, %fs:0(%rcx) |
| # else |
| movl %eax, %fs:C_SYMBOL_NAME(errno@TPOFF) |
| # endif |
| #elif !defined PIC |
| # ifndef _LIBC_REENTRANT |
| movl %eax, C_SYMBOL_NAME(errno) |
| # else |
| pushq %rax |
| cfi_adjust_cfa_offset(8) |
| PUSH_ERRNO_LOCATION_RETURN |
| call BP_SYM (__errno_location) |
| POP_ERRNO_LOCATION_RETURN |
| popq %rcx |
| cfi_adjust_cfa_offset(-8) |
| movl %ecx, (%rax) |
| # endif |
| #else |
| # if RTLD_PRIVATE_ERRNO |
| leaq rtld_errno(%rip), %rcx |
| movl %eax, (%rcx) |
| # elif !defined _LIBC_REENTRANT |
| movq C_SYMBOL_NAME(errno)@GOTPCREL(%rip), %rcx |
| movl %eax, (%rcx) |
| # else |
| pushq %rax |
| cfi_adjust_cfa_offset(8) |
| PUSH_ERRNO_LOCATION_RETURN |
| call C_SYMBOL_NAME (BP_SYM (__errno_location)@PLT) |
| POP_ERRNO_LOCATION_RETURN |
| popq %rcx |
| cfi_adjust_cfa_offset(-8) |
| movl %ecx, (%rax) |
| # endif |
| #endif |
| movq $-1, %rax |
| ret |
| |
| #undef __syscall_error |
| END (__syscall_error) |
