1 /* Copyright (C) 1992, 1995, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Brendan Kehoe (brendan@zen.org).
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
26 #error This file uses GNU C extensions; you must compile with GCC.
30 __longjmp (env
, val_arg
)
34 /* gcc 1.39.19 miscompiled the longjmp routine (as it did setjmp before
35 the hack around it); force it to use $a1 for the longjmp value.
36 Without this it saves $a1 in a register which gets clobbered
38 register int val
asm ("a1");
40 /* Pull back the floating point callee-saved registers. */
41 asm volatile ("l.d $f24, %0" : : "m" (env
[0].__fpregs
[0]));
42 asm volatile ("l.d $f25, %0" : : "m" (env
[0].__fpregs
[1]));
43 asm volatile ("l.d $f26, %0" : : "m" (env
[0].__fpregs
[2]));
44 asm volatile ("l.d $f27, %0" : : "m" (env
[0].__fpregs
[3]));
45 asm volatile ("l.d $f28, %0" : : "m" (env
[0].__fpregs
[4]));
46 asm volatile ("l.d $f29, %0" : : "m" (env
[0].__fpregs
[5]));
47 asm volatile ("l.d $f30, %0" : : "m" (env
[0].__fpregs
[6]));
48 asm volatile ("l.d $f31, %0" : : "m" (env
[0].__fpregs
[7]));
50 /* Restore the stack pointer. */
51 asm volatile ("ld $29, %0" : : "m" (env
[0].__sp
));
53 /* Get and reconstruct the floating point csr. */
54 asm volatile ("lw $2, %0" : : "m" (env
[0].__fpc_csr
));
55 asm volatile ("ctc1 $2, $31");
58 asm volatile ("ld $30, %0" : : "m" (env
[0].__fp
));
61 asm volatile ("ld $gp, %0" : : "m" (env
[0].__gp
));
63 /* Get the callee-saved registers. */
64 asm volatile ("ld $16, %0" : : "m" (env
[0].__regs
[0]));
65 asm volatile ("ld $17, %0" : : "m" (env
[0].__regs
[1]));
66 asm volatile ("ld $18, %0" : : "m" (env
[0].__regs
[2]));
67 asm volatile ("ld $19, %0" : : "m" (env
[0].__regs
[3]));
68 asm volatile ("ld $20, %0" : : "m" (env
[0].__regs
[4]));
69 asm volatile ("ld $21, %0" : : "m" (env
[0].__regs
[5]));
70 asm volatile ("ld $22, %0" : : "m" (env
[0].__regs
[6]));
71 asm volatile ("ld $23, %0" : : "m" (env
[0].__regs
[7]));
74 asm volatile ("ld $31, %0" : : "m" (env
[0].__pc
));
76 /* Give setjmp 1 if given a 0, or what they gave us if non-zero. */
78 asm volatile ("dli $2, 1");
80 asm volatile ("move $2, %0" : : "r" (val
));
82 asm volatile ("j $31");