1 files changed, 84 insertions, 0 deletions
diff --git a/libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S b/libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S
new file mode 100644
index 000000000..0605f3d10
--- /dev/null
+++ b/libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S
@@ -0,0 +1,84 @@
+/* Save current context and jump to a new context.
+   Copyright (C) 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., 51 Franklin Street, Fifth Floor, Boston MA
+   02110-1301 USA.  */
+
+#include <sysdep.h>
+#include <rtld-global-offsets.h>
+#include <shlib-compat.h>
+#include <kernel-features.h>
+
+#define __ASSEMBLY__
+#include <asm/ptrace.h>
+#include "ucontext_i.h"
+
+#define __CONTEXT_FUNC_NAME __swapcontext
+#define __CONTEXT_ENABLE_FPRS 1
+#define __CONTEXT_ENABLE_VRS 1
+
+/* Size of ucontext in GLIBC_2.3.4 and later.  */
+#define _UC_SIZE_2_3_4	1184
+
+#ifdef __ASSUME_SWAPCONTEXT_SYSCALL
+	.section ".text";
+ENTRY (__swapcontext)
+	li	r5,_UC_SIZE_2_3_4;
+	DO_CALL (SYS_ify (swapcontext));
+	bso-	cr0,1f
+/* the kernel does not set the return code for the success case */
+	li	r3,0
+	blr
+1:
+	b	__syscall_error@local
+END(__swapcontext)
+#else
+# include "swapcontext-common.S"
+#endif
+
+versioned_symbol (libc, __swapcontext, swapcontext, GLIBC_2_3_4)
+
+#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
+
+	compat_text_section
+	
+# undef __CONTEXT_FUNC_NAME	
+# define __CONTEXT_FUNC_NAME __novec_swapcontext
+# undef __CONTEXT_ENABLE_VRS
+
+# include "swapcontext-common.S"
+
+	.previous
+
+compat_symbol (libc, __novec_swapcontext, swapcontext, GLIBC_2_3_3)
+
+#endif
+
+#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
+
+# define _ERRNO_H	1
+# include <bits/errno.h>
+
+	compat_text_section
+ENTRY (__swapcontext_stub)
+	li	r3,ENOSYS
+	b	__syscall_error@local
+END (__swapcontext_stub)
+	.previous
+
+compat_symbol (libc, __swapcontext_stub, swapcontext, GLIBC_2_1)
+
+#endif