1 /* setjmp for PowerPC64.
2 Copyright (C) 1995-2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
22 #include <novmxsetjmp.h>
24 #include <jmpbuf-offsets.h>
34 /* Inside ld.so we use the local alias to avoid runtime GOT
36 .tc _rtld_local_ro[TC],_rtld_local_ro
38 .tc _rtld_global_ro[TC],_rtld_global_ro
41 .tc _dl_hwcap[TC],_dl_hwcap
49 li r4,1 /* Set second argument to 1. */
50 b JUMPTARGET (GLUE(__sigsetjmp,_ent))
53 #if defined SHARED && !defined IS_IN_rtld && !defined __NO_VMX__
54 /* When called from within libc we need a special version of _setjmp
55 that saves r2 since the call won't go via a plt call stub. See
56 bugz #269. __GI__setjmp is used in csu/libc-start.c when
57 HAVE_CLEANUP_JMP_BUF is defined. */
58 ENTRY (BP_SYM (__GI__setjmp))
59 std r2,40(r1) /* Save the callers TOC in the save area. */
61 END_2 (BP_SYM (__GI__setjmp))
65 ENTRY (BP_SYM (_setjmp))
67 li r4,0 /* Set second argument to 0. */
68 b JUMPTARGET (GLUE(__sigsetjmp,_ent))
69 END (BP_SYM (_setjmp))
70 libc_hidden_def (_setjmp)
72 ENTRY (BP_SYM (__sigsetjmp))
74 JUMPTARGET(GLUE(__sigsetjmp,_ent)):
75 CHECK_BOUNDS_BOTH_WIDE_LIT (r3, r8, r9, JB_SIZE)
84 #if defined SHARED && !defined IS_IN_rtld
85 ld r5,40(r1) /* Retrieve the callers TOC. */
90 std r14,((JB_GPRS+0)*8)(3)
91 stfd fp14,((JB_FPRS+0)*8)(3)
96 std r15,((JB_GPRS+1)*8)(3)
97 stfd fp15,((JB_FPRS+1)*8)(3)
99 std r16,((JB_GPRS+2)*8)(3)
100 stfd fp16,((JB_FPRS+2)*8)(3)
102 std r17,((JB_GPRS+3)*8)(3)
103 stfd fp17,((JB_FPRS+3)*8)(3)
104 std r18,((JB_GPRS+4)*8)(3)
105 stfd fp18,((JB_FPRS+4)*8)(3)
106 std r19,((JB_GPRS+5)*8)(3)
107 stfd fp19,((JB_FPRS+5)*8)(3)
108 std r20,((JB_GPRS+6)*8)(3)
109 stfd fp20,((JB_FPRS+6)*8)(3)
110 std r21,((JB_GPRS+7)*8)(3)
111 stfd fp21,((JB_FPRS+7)*8)(3)
112 std r22,((JB_GPRS+8)*8)(3)
113 stfd fp22,((JB_FPRS+8)*8)(3)
114 std r23,((JB_GPRS+9)*8)(3)
115 stfd fp23,((JB_FPRS+9)*8)(3)
116 std r24,((JB_GPRS+10)*8)(3)
117 stfd fp24,((JB_FPRS+10)*8)(3)
118 std r25,((JB_GPRS+11)*8)(3)
119 stfd fp25,((JB_FPRS+11)*8)(3)
120 std r26,((JB_GPRS+12)*8)(3)
121 stfd fp26,((JB_FPRS+12)*8)(3)
122 std r27,((JB_GPRS+13)*8)(3)
123 stfd fp27,((JB_FPRS+13)*8)(3)
124 std r28,((JB_GPRS+14)*8)(3)
125 stfd fp28,((JB_FPRS+14)*8)(3)
126 std r29,((JB_GPRS+15)*8)(3)
127 stfd fp29,((JB_FPRS+15)*8)(3)
128 std r30,((JB_GPRS+16)*8)(3)
129 stfd fp30,((JB_FPRS+16)*8)(3)
130 std r31,((JB_GPRS+17)*8)(3)
131 stfd fp31,((JB_FPRS+17)*8)(3)
133 ld r6,.LC__dl_hwcap@toc(r2)
135 /* Load _rtld-global._dl_hwcap. */
136 ld r6,RTLD_GLOBAL_RO_DL_HWCAP_OFFSET(r6)
138 ld r6,0(r6) /* Load extern _dl_hwcap. */
140 andis. r6,r6,(PPC_FEATURE_HAS_ALTIVEC >> 16)
142 la r5,((JB_VRS)*8)(3)
145 stw r0,((JB_VRSAVE)*8)(3)
147 beq+ L(aligned_save_vmx)
149 vspltisb v1,-1 /* set v1 to all 1's */
150 vspltisb v2,0 /* set v2 to all 0's */
151 vperm v3,v2,v1,v0 /* v3 contains shift mask with num all 1 bytes
152 on left = misalignment */
155 /* Special case for v20 we need to preserve what is in save area
156 below v20 before obliterating it */
163 # define save_2vmx_partial(savevr,prev_savevr,hivr,shiftvr,maskvr,savegpr,addgpr) \
164 addi addgpr,addgpr,32; \
165 vperm savevr,savevr,savevr,shiftvr; \
166 vsel hivr,prev_savevr,savevr,maskvr; \
169 save_2vmx_partial(v21,v20,v5,v0,v3,r6,r5)
170 save_2vmx_partial(v22,v21,v5,v0,v3,r5,r6)
171 save_2vmx_partial(v23,v22,v5,v0,v3,r6,r5)
172 save_2vmx_partial(v24,v23,v5,v0,v3,r5,r6)
173 save_2vmx_partial(v25,v24,v5,v0,v3,r6,r5)
174 save_2vmx_partial(v26,v25,v5,v0,v3,r5,r6)
175 save_2vmx_partial(v27,v26,v5,v0,v3,r6,r5)
176 save_2vmx_partial(v28,v27,v5,v0,v3,r5,r6)
177 save_2vmx_partial(v29,v28,v5,v0,v3,r6,r5)
178 save_2vmx_partial(v30,v29,v5,v0,v3,r5,r6)
180 /* Special case for r31 we need to preserve what is in save area
181 above v31 before obliterating it */
218 #if defined NOT_IN_libc && defined IS_IN_rtld
222 b JUMPTARGET (BP_SYM (__sigjmp_save))
227 cfi_adjust_cfa_offset(112)
229 bl JUMPTARGET (BP_SYM (__sigjmp_save))
236 END (BP_SYM (__sigsetjmp))