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-rw-r--r--sysdeps/unix/x86_64/sysdep.S71
1 files changed, 71 insertions, 0 deletions
diff --git a/sysdeps/unix/x86_64/sysdep.S b/sysdeps/unix/x86_64/sysdep.S
new file mode 100644
index 0000000000..b26b1db934
--- /dev/null
+++ b/sysdeps/unix/x86_64/sysdep.S
@@ -0,0 +1,71 @@
+/* Copyright (C) 2001 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>
+
+.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. */
+ movq $EAGAIN, %rax /* Yes; translate it to EAGAIN. */
+notb:
+#endif
+#ifndef PIC
+# ifndef _LIBC_REENTRANT
+ movq %rax, C_SYMBOL_NAME(errno)
+# else
+ pushq %rax
+ PUSH_ERRNO_LOCATION_RETURN
+ call BP_SYM (__errno_location)
+ POP_ERRNO_LOCATION_RETURN
+ popq %rcx
+ movq %rcx, (%rax)
+# endif
+#else
+# ifndef _LIBC_REENTRANT
+ movq C_SYMBOL_NAME(errno)@GOTPCREL(%rip), %rcx
+ movq %rax, (%rcx)
+# else
+ pushq %rax
+ PUSH_ERRNO_LOCATION_RETURN
+ call C_SYMBOL_NAME (BP_SYM (__errno_location)@PLT)
+ POP_ERRNO_LOCATION_RETURN
+ popq %rcx
+ movq %rcx, (%rax)
+# endif
+#endif
+ movq $-1, %rax
+ ret
+
+#undef __syscall_error
+END (__syscall_error)