| /* setjmp for ARM. |
| Copyright (C) 1997-2014 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #include <bits/setjmp.h> |
| #include <rtld-global-offsets.h> |
| #include <arm-features.h> |
| |
| ENTRY (__sigsetjmp) |
| #ifdef PTR_MANGLE |
| PTR_MANGLE_LOAD (a3, ip) |
| #endif |
| mov ip, r0 |
| |
| /* Save registers */ |
| sfi_breg ip, \ |
| stmia \B!, JMP_BUF_REGLIST |
| #ifdef PTR_MANGLE |
| mov a4, sp |
| PTR_MANGLE2 (a4, a4, a3) |
| str a4, [ip], #4 |
| PTR_MANGLE2 (a4, lr, a3) |
| str a4, [ip], #4 |
| #else |
| str sp, [ip], #4 |
| str lr, [ip], #4 |
| #endif |
| |
| #if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__ |
| # define NEED_HWCAP 1 |
| #endif |
| |
| #ifdef NEED_HWCAP |
| /* Check if we have a VFP unit. */ |
| # ifdef IS_IN_rtld |
| ldr a3, 1f |
| ldr a4, .Lrtld_local_ro |
| 0: add a3, pc, a3 |
| add a3, a3, a4 |
| ldr a3, [a3, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET] |
| # else |
| # ifdef PIC |
| ldr a3, 1f |
| ldr a4, .Lrtld_global_ro |
| 0: add a3, pc, a3 |
| ldr a3, [a3, a4] |
| ldr a3, [a3, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET] |
| # else |
| ldr a3, .Lhwcap |
| ldr a3, [a3, #0] |
| # endif |
| # endif |
| #endif |
| |
| #ifdef __SOFTFP__ |
| tst a3, #HWCAP_ARM_VFP |
| beq .Lno_vfp |
| #endif |
| |
| /* Store the VFP registers. |
| Don't use VFP instructions directly because this code |
| is used in non-VFP multilibs. */ |
| /* Following instruction is vstmia ip!, {d8-d15}. */ |
| sfi_breg ip, \ |
| stc p11, cr8, [\B], #64 |
| .Lno_vfp: |
| |
| #ifndef ARM_ASSUME_NO_IWMMXT |
| tst a3, #HWCAP_ARM_IWMMXT |
| beq .Lno_iwmmxt |
| |
| /* Save the call-preserved iWMMXt registers. */ |
| /* Following instructions are wstrd wr10, [ip], #8 (etc.) */ |
| sfi_breg r12, \ |
| stcl p1, cr10, [\B], #8 |
| sfi_breg r12, \ |
| stcl p1, cr11, [\B], #8 |
| sfi_breg r12, \ |
| stcl p1, cr12, [\B], #8 |
| sfi_breg r12, \ |
| stcl p1, cr13, [\B], #8 |
| sfi_breg r12, \ |
| stcl p1, cr14, [\B], #8 |
| sfi_breg r12, \ |
| stcl p1, cr15, [\B], #8 |
| .Lno_iwmmxt: |
| #endif |
| |
| /* Make a tail call to __sigjmp_save; it takes the same args. */ |
| B PLTJMP(C_SYMBOL_NAME(__sigjmp_save)) |
| |
| #ifdef NEED_HWCAP |
| # ifdef IS_IN_rtld |
| 1: .long _GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS |
| .Lrtld_local_ro: |
| .long C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF) |
| # else |
| # ifdef PIC |
| 1: .long _GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS |
| .Lrtld_global_ro: |
| .long C_SYMBOL_NAME(_rtld_global_ro)(GOT) |
| # else |
| .Lhwcap: |
| .long C_SYMBOL_NAME(_dl_hwcap) |
| # endif |
| # endif |
| #endif |
| |
| END (__sigsetjmp) |
| |
| hidden_def (__sigsetjmp) |
