summary refs log tree commit diff
path: root/sysdeps/alpha/setjmp_aux.c
blob: fa2697529501881ae0dbb7fabea43f3b29de3147 (plain) (blame)
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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
/* Copyright (C) 1992, 1994, 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 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.  */

/* Global register decls must come before any function defn.  */

register long int
  r9 asm ("$9"), r10 asm ("$10"), r11 asm ("$11"), r12 asm ("$12"),
  r13 asm ("$13"), r14 asm ("$14");

register long int *fp asm ("$15"), *sp asm ("$30"), *retpc asm ("$26");

#if 1				/* XXX */
register double
  f2 asm ("$f2"), f3 asm ("$f3"), f4 asm ("$f4"), f5 asm ("$f5"),
  f6 asm ("$f6"), f7 asm ("$f7"), f8 asm ("$f8"), f9 asm ("$f9");
#endif


#include <setjmp.h>


/* Save the current program position in ENV and return 0.  */
int
__sigsetjmp_aux (sigjmp_buf env, int savemask, long int *sp, long int *fp)
{
  /* Save the integer registers.  */
  env[0].__jmpbuf[0].__9 = r9;
  env[0].__jmpbuf[0].__10 = r10;
  env[0].__jmpbuf[0].__11 = r11;
  env[0].__jmpbuf[0].__12 = r12;
  env[0].__jmpbuf[0].__13 = r13;
  env[0].__jmpbuf[0].__14 = r14;

#if 1				/* XXX */
  /* Save the floating point registers.  */
  env[0].__jmpbuf[0].__f2 = f2;
  env[0].__jmpbuf[0].__f3 = f3;
  env[0].__jmpbuf[0].__f4 = f4;
  env[0].__jmpbuf[0].__f5 = f5;
  env[0].__jmpbuf[0].__f6 = f6;
  env[0].__jmpbuf[0].__f7 = f7;
  env[0].__jmpbuf[0].__f8 = f8;
  env[0].__jmpbuf[0].__f9 = f9;
#endif

  /* Save the return address of our caller, where longjmp will jump to.  */
  env[0].__jmpbuf[0].__pc = retpc;

  /* Save the FP and SP of our caller.  The __sigsetjmp entry point
     simply puts these in the argument registers for us to fetch.  */
  env[0].__jmpbuf[0].__fp = fp;
  env[0].__jmpbuf[0].__sp = sp;

  /* Save the signal mask if requested.  */
  __sigjmp_save (env, savemask);

  retpc = env[0].__jmpbuf[0].__pc;	/* restore ra, ugly... */

  /* Return to the original caller of __sigsetjmp.  */
  return 0;
}