1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* Copyright (C) 2001, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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 <errno.h>
#include <sysdep.h>
#include <setjmp.h>
#include <bits/setjmp.h>
#include <stdlib.h>
#include <unistd.h>
/* Jump to the position specified by ENV, causing the
setjmp call there to return VAL, or 1 if VAL is 0. */
void
__longjmp (__jmp_buf env, int val)
{
#ifdef PTR_DEMANGLE
register uintptr_t r5 __asm ("%r5") = THREAD_GET_POINTER_GUARD ();
#endif
/* Restore registers and jump back. */
asm volatile ("lgr %%r2,%0\n\t" /* Put val in grp 2. */
"ld %%f7,104(%1)\n\t"
"ld %%f5,96(%1)\n\t"
"ld %%f3,88(%1)\n\t"
"ld %%f1,80(%1)\n\t"
"lmg %%r6,%%r15,0(%1)\n\t"
#ifdef PTR_DEMANGLE
"xgr %%r14,%2\n\t"
#endif
"br %%r14"
: : "r" (val == 0 ? 1 : val),
"a" (env)
#ifdef PTR_DEMANGLE
, "r" (r5)
#endif
: "2" );
/* Avoid `volatile function does return' warnings. */
for (;;);
}
|
