]>
Commit | Line | Data |
---|---|---|
f10eff58 | 1 | /* setjmp for ARM. |
04277e02 | 2 | Copyright (C) 1997-2019 Free Software Foundation, Inc. |
f10eff58 DJ |
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 | ||
22423683 | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
f10eff58 DJ |
18 | |
19 | #include <sysdep.h> | |
80a56cc3 | 20 | #include <stap-probe.h> |
f10eff58 | 21 | #include <bits/setjmp.h> |
f10eff58 | 22 | #include <rtld-global-offsets.h> |
2aa5b9c1 | 23 | #include <arm-features.h> |
f10eff58 DJ |
24 | |
25 | ENTRY (__sigsetjmp) | |
b7f2d27d | 26 | #ifdef PTR_MANGLE |
2f10c4d6 | 27 | PTR_MANGLE_LOAD (a3, ip) |
b7f2d27d | 28 | #endif |
f10eff58 DJ |
29 | mov ip, r0 |
30 | ||
80a56cc3 WN |
31 | /* setjmp probe expects sigsetjmp first argument (4@r0), second |
32 | argument (-4@r1), and target address (4@r14), respectively. */ | |
33 | LIBC_PROBE (setjmp, 3, 4@r0, -4@r1, 4@r14) | |
34 | ||
35 | /* Save sp and lr */ | |
b7f2d27d | 36 | #ifdef PTR_MANGLE |
41bc5e09 WN |
37 | mov a4, sp |
38 | PTR_MANGLE2 (a4, a4, a3) | |
81cb7a0b | 39 | str a4, [ip], #4 |
b7f2d27d | 40 | PTR_MANGLE2 (a4, lr, a3) |
81cb7a0b | 41 | str a4, [ip], #4 |
b7f2d27d | 42 | #else |
81cb7a0b ZW |
43 | str sp, [ip], #4 |
44 | str lr, [ip], #4 | |
b7f2d27d | 45 | #endif |
80a56cc3 | 46 | /* Save registers */ |
81cb7a0b | 47 | stmia ip!, JMP_BUF_REGLIST |
f10eff58 | 48 | |
2aa5b9c1 RM |
49 | #if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__ |
50 | # define NEED_HWCAP 1 | |
51 | #endif | |
52 | ||
53 | #ifdef NEED_HWCAP | |
f10eff58 | 54 | /* Check if we have a VFP unit. */ |
a3848485 | 55 | # if IS_IN (rtld) |
8c2b1ed8 RM |
56 | LDST_PCREL (ldr, a3, a4, \ |
57 | C_SYMBOL_NAME(_rtld_local_ro) \ | |
58 | + RTLD_GLOBAL_RO_DL_HWCAP_OFFSET) | |
2aa5b9c1 | 59 | # else |
3ee57869 | 60 | # ifdef SHARED |
8c2b1ed8 RM |
61 | LDR_GLOBAL (a3, a4, C_SYMBOL_NAME(_rtld_global_ro), \ |
62 | RTLD_GLOBAL_RO_DL_HWCAP_OFFSET) | |
2aa5b9c1 | 63 | # else |
8c2b1ed8 | 64 | LDR_GLOBAL (a3, a4, C_SYMBOL_NAME(_dl_hwcap), 0) |
2aa5b9c1 RM |
65 | # endif |
66 | # endif | |
f10eff58 DJ |
67 | #endif |
68 | ||
6dcf80c7 | 69 | #ifdef __SOFTFP__ |
4b860fb9 | 70 | tst a3, #HWCAP_ARM_VFP |
6dcf80c7 RM |
71 | beq .Lno_vfp |
72 | #endif | |
f10eff58 | 73 | |
fbc4c20a AS |
74 | /* Store the VFP registers. |
75 | Don't use VFP instructions directly because this code | |
76 | is used in non-VFP multilibs. */ | |
77 | /* Following instruction is vstmia ip!, {d8-d15}. */ | |
81cb7a0b | 78 | stc p11, cr8, [ip], #64 |
6dcf80c7 | 79 | .Lno_vfp: |
f10eff58 | 80 | |
2aa5b9c1 | 81 | #ifndef ARM_ASSUME_NO_IWMMXT |
4b860fb9 | 82 | tst a3, #HWCAP_ARM_IWMMXT |
6dcf80c7 | 83 | beq .Lno_iwmmxt |
4b860fb9 DJ |
84 | |
85 | /* Save the call-preserved iWMMXt registers. */ | |
86 | /* Following instructions are wstrd wr10, [ip], #8 (etc.) */ | |
81cb7a0b ZW |
87 | stcl p1, cr10, [r12], #8 |
88 | stcl p1, cr11, [r12], #8 | |
89 | stcl p1, cr12, [r12], #8 | |
90 | stcl p1, cr13, [r12], #8 | |
91 | stcl p1, cr14, [r12], #8 | |
92 | stcl p1, cr15, [r12], #8 | |
6dcf80c7 | 93 | .Lno_iwmmxt: |
2aa5b9c1 | 94 | #endif |
4b860fb9 | 95 | |
f10eff58 DJ |
96 | /* Make a tail call to __sigjmp_save; it takes the same args. */ |
97 | B PLTJMP(C_SYMBOL_NAME(__sigjmp_save)) | |
98 | ||
f10eff58 DJ |
99 | END (__sigsetjmp) |
100 | ||
5de92c17 | 101 | hidden_def (__sigsetjmp) |