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-rw-r--r--sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/getcontext.S72
1 files changed, 72 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/getcontext.S b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/getcontext.S
new file mode 100644
index 0000000000..e989d3efb4
--- /dev/null
+++ b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/i386/getcontext.S
@@ -0,0 +1,72 @@
+/* Copyright (C) 2008 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
+
+ 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>
+
+#include "ucontext_i.h"
+
+/* note: make sure that we do not use %edx as a scratch (see swapcontext.S) */
+
+ENTRY(__getcontext)
+ /* load ucp (arg) into %ecx */
+ movl 4(%esp), %ecx
+
+ /* load return address into %eax */
+ movl 0(%esp), %eax
+
+ /* push ucp, subcall number, and return address */
+ pushl %ecx; cfi_adjust_cfa_offset (4)
+ pushl $SYS_SUB_getcontext; cfi_adjust_cfa_offset (4)
+ pushl %eax; cfi_adjust_cfa_offset (4)
+
+ /* call context syscall */
+ DO_CALL(context, 2)
+
+ /* Jump if not error. */
+ jnb 1f;
+
+ /* pop args from stack */
+ addl $12, %esp; cfi_adjust_cfa_offset (-12)
+
+ /* Jump to error label. */
+ jmp SYSCALL_ERROR_LABEL;
+
+1:
+ /* pop args from stack */
+ addl $12, %esp; cfi_adjust_cfa_offset (-12);
+
+ /* load ucp (arg) into %ecx */
+ movl 4(%esp), %ecx
+
+ /* save %esp */
+ leal 4(%esp), %eax
+ movl %eax, oUESP(%ecx)
+
+ /* save %eip */
+ movl 0(%esp), %eax
+ movl %eax, oEIP(%ecx)
+
+ /* return 0 on success */
+ xorl %eax, %eax
+ movl %eax, oEAX(%ecx)
+L(pseudo_end):
+ ret
+PSEUDO_END(__getcontext)
+
+weak_alias (__getcontext, getcontext)