| /* setjmp for ARM. |
| Copyright (C) 1997, 1998, 2005, 2006, 2008 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 General Public License |
| along with GCC; see the file COPYING. If not, write to the Free |
| Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301, USA. */ |
| |
| #include <sysdep.h> |
| #define _SETJMP_H |
| #define _ASM |
| #include <bits/setjmp.h> |
| #include <rtld-global-offsets.h> |
| |
| ENTRY (__sigsetjmp) |
| mov ip, r0 |
| |
| /* Save registers */ |
| stmia ip!, {v1-v6, sl, fp, sp, lr} |
| |
| /* 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 |
| |
| tst a3, #HWCAP_ARM_VFP |
| beq Lno_vfp |
| |
| /* 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}. */ |
| stc p11, cr8, [ip], #64 |
| /* Store the floating-point status register. */ |
| /* Following instruction is vmrs a4, fpscr. */ |
| mrc p10, 7, a4, cr1, cr0, 0 |
| str a4, [ip], #4 |
| Lno_vfp: |
| |
| tst a3, #HWCAP_ARM_IWMMXT |
| beq Lno_iwmmxt |
| |
| /* Save the call-preserved iWMMXt registers. */ |
| /* Following instructions are wstrd wr10, [ip], #8 (etc.) */ |
| stcl p1, cr10, [r12], #8 |
| stcl p1, cr11, [r12], #8 |
| stcl p1, cr12, [r12], #8 |
| stcl p1, cr13, [r12], #8 |
| stcl p1, cr14, [r12], #8 |
| stcl p1, cr15, [r12], #8 |
| Lno_iwmmxt: |
| |
| /* Make a tail call to __sigjmp_save; it takes the same args. */ |
| B PLTJMP(C_SYMBOL_NAME(__sigjmp_save)) |
| |
| #ifdef IS_IN_rtld |
| 1: .long _GLOBAL_OFFSET_TABLE_ - 0b - 8 |
| Lrtld_local_ro: |
| .long C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF) |
| #else |
| #ifdef PIC |
| 1: .long _GLOBAL_OFFSET_TABLE_ - 0b - 8 |
| Lrtld_global_ro: |
| .long C_SYMBOL_NAME(_rtld_global_ro)(GOT) |
| #else |
| Lhwcap: |
| .long C_SYMBOL_NAME(_dl_hwcap) |
| #endif |
| #endif |
| |
| END (__sigsetjmp) |
| |
| hidden_def (__sigsetjmp) |