1/* longjmp for PowerPC.
2   Copyright (C) 1995-2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
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, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <sysdep.h>
20#include <stap-probe.h>
21#define _ASM
22#ifdef __NO_VMX__
23# include <novmxsetjmp.h>
24#else
25# include <jmpbuf-offsets.h>
26#endif
27
28ENTRY (__longjmp_symbol)
29
30#if defined PTR_DEMANGLE || defined CHECK_SP
31	lwz r24,(JB_GPR1*4)(r3)
32# ifdef CHECK_SP
33#  ifdef PTR_DEMANGLE
34	PTR_DEMANGLE3 (r24, r24, r25)
35#  endif
36	CHECK_SP (r24)
37	mr r1,r24
38# endif
39#else
40	lwz r1,(JB_GPR1*4)(r3)
41#endif
42	lwz r0,(JB_LR*4)(r3)
43	lwz r14,((JB_GPRS+14-14)*4)(r3)
44	lwz r15,((JB_GPRS+15-14)*4)(r3)
45	lwz r16,((JB_GPRS+16-14)*4)(r3)
46	lwz r17,((JB_GPRS+17-14)*4)(r3)
47	lwz r18,((JB_GPRS+18-14)*4)(r3)
48	lwz r19,((JB_GPRS+19-14)*4)(r3)
49	lwz r20,((JB_GPRS+20-14)*4)(r3)
50#ifdef PTR_DEMANGLE
51# ifndef CHECK_SP
52	PTR_DEMANGLE3 (r1, r24, r25)
53# endif
54	PTR_DEMANGLE2 (r0, r25)
55#endif
56	/* longjmp/longjmp_target probe expects longjmp first argument (4@3),
57	   second argument (-4@4), and target address (4@0), respectively.  */
58	LIBC_PROBE (longjmp, 3, 4@3, -4@4, 4@0)
59	mtlr r0
60	lwz r21,((JB_GPRS+21-14)*4)(r3)
61	lwz r22,((JB_GPRS+22-14)*4)(r3)
62	lwz r5,(JB_CR*4)(r3)
63	lwz r23,((JB_GPRS+23-14)*4)(r3)
64	lwz r24,((JB_GPRS+24-14)*4)(r3)
65	lwz r25,((JB_GPRS+25-14)*4)(r3)
66	mtcrf 0xFF,r5
67	lwz r26,((JB_GPRS+26-14)*4)(r3)
68	lwz r27,((JB_GPRS+27-14)*4)(r3)
69	lwz r28,((JB_GPRS+28-14)*4)(r3)
70	lwz r29,((JB_GPRS+29-14)*4)(r3)
71	lwz r30,((JB_GPRS+30-14)*4)(r3)
72	lwz r31,((JB_GPRS+31-14)*4)(r3)
73	LIBC_PROBE (longjmp_target, 3, 4@3, -4@4, 4@0)
74	mr r3,r4
75	blr
76END (__longjmp_symbol)
77