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-rw-r--r--sysdeps/unix/arm/sysdep.S71
1 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/unix/arm/sysdep.S b/sysdeps/unix/arm/sysdep.S
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+/* Copyright (C) 1991,92,93,94,95,96,97,98,2002,03 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>
+
+.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. */
+ cmp r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK? */
+ moveq r0, $EAGAIN /* Yes; translate it to EAGAIN. */
+#endif
+
+#ifdef _LIBC_REENTRANT
+ str lr, [sp, #-4]!
+ str r0, [sp, #-4]!
+ bl PLTJMP(C_SYMBOL_NAME(__errno_location))
+ ldr r1, [sp], #4
+ str r1, [r0]
+ mvn r0, $0
+ ldr pc, [sp], #4
+#else
+#ifndef PIC
+ ldr r1, 1f
+ str r0, [r1]
+ mvn r0, $0
+ DO_RET (r14)
+
+1: .long C_SYMBOL_NAME(errno)
+#else
+ @ we have to establish our PIC register
+ ldr r2, 1f
+ ldr r1, 2f
+0: add r2, pc, r2
+ str r0, [r1, r2]
+ mvn r0, $0
+ DO_RET (r14)
+
+1: .word _GLOBAL_OFFSET_TABLE_ - 0b - 8
+2: .word C_SYMBOL_NAME(errno)(GOTOFF)
+#endif
+#endif
+
+#undef __syscall_error
+END (__syscall_error)