1 /* Copyright (C) 2001 Free Software Foundation, Inc.
2    This file is part of the GNU C Library.
3      Contributed by Jakub Jelinek <jakub@redhat.com>.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, write to the Free
17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18    02111-1307 USA.  */
19 
20 /* Constants shared between setcontext() and getcontext().  Don't
21    install this header file.  */
22 
23 
24 #define UC_LINK		0
25 #define __UC_SIGMASK	16
26 #define UC_M_PC		40
27 #define UC_M_NPC	48
28 #define UC_SIGMASK	536
29 #define SIGMASK_WORDS	16
30 
31 /* Copyright (C) 1997, 2001 Free Software Foundation, Inc.
32    This file is part of the GNU C Library.
33    Contributed by Richard Henderson (rth@tamu.edu).
34 
35    The GNU C Library is free software; you can redistribute it and/or
36    modify it under the terms of the GNU Lesser General Public
37    License as published by the Free Software Foundation; either
38    version 2.1 of the License, or (at your option) any later version.
39 
40    The GNU C Library is distributed in the hope that it will be useful,
41    but WITHOUT ANY WARRANTY; without even the implied warranty of
42    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
43    Lesser General Public License for more details.
44 
45    You should have received a copy of the GNU Lesser General Public
46    License along with the GNU C Library; if not, write to the Free
47    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
48    02111-1307 USA.  */
49 
50 #define ENTRY(x) x:
51 #define END(x)
52 
53 /*#include "ucontext_i.h" (up above) */
54 
55 /* int getcontext(ucontext_t *); */
56 
57 ENTRY(getcontext)
58 
59 	ldx	[%o0 + UC_LINK], %o1	/* Preserve uc_link field, the
60 					   trap clears it.  */
61 	ta	0x6e
62 1:
63 	ldx	[%o0 + UC_M_PC], %o2
64 	ldx	[%o0 + UC_M_NPC], %o3
65 	ldx	[%o0 + __UC_SIGMASK], %o4
66 	stx	%o1, [%o0 + UC_LINK]
67 	add	%o2, 2f - 1b, %o2
68 	stx	%o2, [%o0 + UC_M_PC]
69 	add	%o3, 2f - 1b, %o3
70 	stx	%o3, [%o0 + UC_M_NPC]
71 #if SIGMASK_WORDS == 16
72 	stx	%o4, [%o0 + UC_SIGMASK]
73 	stx	%g0, [%o0 + UC_SIGMASK + 8]
74 	stx	%g0, [%o0 + UC_SIGMASK + 16]
75 	stx	%g0, [%o0 + UC_SIGMASK + 24]
76 	stx	%g0, [%o0 + UC_SIGMASK + 32]
77 	stx	%g0, [%o0 + UC_SIGMASK + 40]
78 	stx	%g0, [%o0 + UC_SIGMASK + 48]
79 	stx	%g0, [%o0 + UC_SIGMASK + 56]
80 	stx	%g0, [%o0 + UC_SIGMASK + 64]
81 	stx	%g0, [%o0 + UC_SIGMASK + 72]
82 	stx	%g0, [%o0 + UC_SIGMASK + 80]
83 	stx	%g0, [%o0 + UC_SIGMASK + 88]
84 	stx	%g0, [%o0 + UC_SIGMASK + 96]
85 	stx	%g0, [%o0 + UC_SIGMASK + 104]
86 	stx	%g0, [%o0 + UC_SIGMASK + 112]
87 	stx	%g0, [%o0 + UC_SIGMASK + 120]
88 #else
89 # error Adjust getcontext
90 #endif
91 2:
92 	retl
93 	 clr	%o0
94 
95 END(getcontext)
96 
97 /* Copyright (C) 1997, 2001 Free Software Foundation, Inc.
98    This file is part of the GNU C Library.
99    Contributed by Richard Henderson (rth@tamu.edu).
100 
101    The GNU C Library is free software; you can redistribute it and/or
102    modify it under the terms of the GNU Lesser General Public
103    License as published by the Free Software Foundation; either
104    version 2.1 of the License, or (at your option) any later version.
105 
106    The GNU C Library is distributed in the hope that it will be useful,
107    but WITHOUT ANY WARRANTY; without even the implied warranty of
108    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
109    Lesser General Public License for more details.
110 
111    You should have received a copy of the GNU Lesser General Public
112    License along with the GNU C Library; if not, write to the Free
113    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
114    02111-1307 USA.  */
115 
116 /*
117 #include <sysdep.h>
118 #include "ucontext_i.h"
119 */
120 
121 /* int setcontext(ucontext_t *ctx); */
122 .weak setcontext
123 ENTRY(setcontext)
124 
125 	mov	1, %o1
126 
127 /* int __setcontext(ucontext_t *ctx, int restoremask); */
128 ENTRY(__setcontext)
129 
130 	ldx	[%o0 + UC_SIGMASK], %o2
131 	stx	%o2, [%o0 + __UC_SIGMASK]
132 	ta	0x6f
133 
134 END(__setcontext)
135