Pete Popov writes:

Hi Erik,

I'm not sure why the NIOS support is not in uClibc -- perhaps the patch
was rejected or never submitted? In any case, I'm playing with some NIOS
stuff and created this patch against 0.9.26. The work was done by
Microtronix. I'm not sure who else contributed to it. It would be great
to have the NIOS support available in uClibc so developers don't have to
go searching for these bits.

Pete

1 files changed, 101 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/nios/setjmp.S b/libc/sysdeps/linux/nios/setjmp.S
new file mode 100644
index 000000000..70bd75c5d
--- /dev/null
+++ b/libc/sysdeps/linux/nios/setjmp.S
@@ -0,0 +1,101 @@
+/* Copyright (C) 1997, 1998 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#define _ASM
+#define _SETJMP_H
+#include <bits/setjmp.h>
+#include "NM_Macros.S"
+
+;----------------------------------------
+;         Name: __sigsetjmp
+;  Description: Save the current context so
+;               a nr_longjmp works later.
+;        Input: %o0: jmp_buf: (ptr to) array to store context in
+;       Output: %o0 = 0 the first time we're called, or
+;               whatever longjmp returns later
+; Side Effects: Uses %g0
+;    CWP Depth: 0
+;
+
+	.align	2
+	.global	_setjmp
+	
+_setjmp:
+	br	__sigsetjmp
+	 movi	%o1,0		; (Delay slot) Set signal mask to zero
+
+	.align	2
+	.global	setjmp
+	
+setjmp:
+	MOVIP	%o1,1		; Set signal mask to 1 to save mask
+
+	.align	2
+	.global	__sigsetjmp
+
+__sigsetjmp:
+	pfx	jmpbuf_callersret ; present return address
+	st	[%o0],%i7	
+	pfx	jmpbuf_jmpret	; where the longjmp will later execute from
+	st	[%o0],%o7	
+	pfx	jmpbuf_sp	; Save stack pointer
+	st	[%o0],%o6
+	pfx	jmpbuf_l0	; Save local register l0
+	st	[%o0],%l0
+	pfx	jmpbuf_l1	; Save local register l1
+	st	[%o0],%l1
+	pfx	jmpbuf_l2	; Save local register l2
+	st	[%o0],%l2
+	pfx	jmpbuf_l3	; Save local register l3
+	st	[%o0],%l3
+	pfx	jmpbuf_l4	; Save local register l4
+	st	[%o0],%l4
+	pfx	jmpbuf_l5	; Save local register l5
+	st	[%o0],%l5
+	pfx	jmpbuf_l6	; Save local register l6
+	st	[%o0],%l6
+	pfx	jmpbuf_l7	; Save local register l7
+	st	[%o0],%l7
+	pfx	jmpbuf_i0	; Save input register i0
+	st	[%o0],%i0
+	pfx	jmpbuf_i1	; Save input register i1
+	st	[%o0],%i1
+	pfx	jmpbuf_i2	; Save input register i2
+	st	[%o0],%i2
+	pfx	jmpbuf_i3	; Save input register i3
+	st	[%o0],%i3
+	pfx	jmpbuf_i4	; Save input register i4
+	st	[%o0],%i4
+	pfx	jmpbuf_i5	; Save input register i5
+	st	[%o0],%i5
+	pfx	%hi(__sigjmp_save@h)	  ; Load up %g0 with address
+	movi	%g0,%lo(__sigjmp_save@h)
+	pfx	%xhi(__sigjmp_save@h)
+	movhi	%g0,%xlo(__sigjmp_save@h)
+	jmp	%g0
+	 nop			; (delay slot)
+
+
+
+
+
+
+
+
+
+