First pass attempt at an alpha port

1 files changed, 97 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/alpha/setjmp.S b/libc/sysdeps/linux/alpha/setjmp.S
new file mode 100644
index 000000000..69649eeab
--- /dev/null
+++ b/libc/sysdeps/linux/alpha/setjmp.S
@@ -0,0 +1,97 @@
+/* Copyright (C) 1992, 1994, 1996, 1997 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 <features.h>
+#define _ASM
+#define _SETJMP_H
+#define __ASSEMBLY__
+#include <bits/setjmp.h>
+
+#define a0  $16
+
+       .ent __sigsetjmp
+       .global __sigsetjmp
+__sigsetjmp:
+       ldgp    $29, 0($27)
+
+$sigsetjmp_local:
+       subq    $30, 16, $30
+       .frame  $26, 16, $26, 0
+       stq     $26, 0($30)
+       .mask   0x04000000, -16
+#ifdef PROF
+	.set noat
+	lda	AT, _mcount
+	jsr	AT, (AT), _mcount
+	.set at
+#endif
+	.prologue 1
+
+	stq	$9, JB_S0*8(a0)
+	stq	$10, JB_S1*8(a0)
+	stq	$11, JB_S2*8(a0)
+	stq	$12, JB_S3*8(a0)
+	stq	$13, JB_S4*8(a0)
+	stq	$14, JB_S5*8(a0)
+	stq	$26, JB_PC*8(a0)
+	addq	$30, 16, $1
+	stq	$15, JB_FP*8(a0)
+	stq	$1, JB_SP*8(a0)
+	stt	$f2, JB_F2*8(a0)
+	stt	$f3, JB_F3*8(a0)
+	stt	$f4, JB_F4*8(a0)
+	stt	$f5, JB_F5*8(a0)
+	stt	$f6, JB_F6*8(a0)
+	stt	$f7, JB_F7*8(a0)
+	stt	$f8, JB_F8*8(a0)
+	stt	$f9, JB_F9*8(a0)
+
+	/* Call to C to (potentially) save our signal mask.  */
+	jsr	$26, __sigjmp_save
+
+	ldq	$26, 0($30)
+	addq	$30, 16, $30
+	ret
+
+.end __sigsetjmp
+
+/* Put these traditional entry points in the same file so that we can
+   elide much of the nonsense in trying to jmp to the real function.  */
+
+.globl  _setjmp;
+.align 3;
+.ent  _setjmp , 0;
+_setjmp:
+	.frame $30 , 0, $26
+	ldgp	$29, 0($27)
+	mov	0, $17
+	br	$sigsetjmp_local
+.end _setjmp
+
+.globl  setjmp;
+.align 3;
+.ent  setjmp , 0;
+setjmp:
+	.frame $30 , 0, $26
+	ldgp	$29, 0($27)
+	mov	1, $17
+	br	$sigsetjmp_local
+.end setjmp
+
+.weak   _setjmp
+.weak   setjmp