projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b168057a | 1 | /* Copyright (C) 2011-2015 Free Software Foundation, Inc. |
| 63d143a2 CM |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. | |
| 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 | |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 63d143a2 CM |
18 | |
| 19 | #include <sysdep.h> | |
| 20 | #include <arch/abi.h> | |
| 21 | ||
| 22 | #include "ucontext_i.h" | |
| 23 | ||
| 24 | /* int getcontext (ucontext_t *ucp) */ | |
| 25 | ||
| 26 | .text | |
| 27 | ENTRY (__getcontext) | |
| 28 | FEEDBACK_ENTER(__getcontext) | |
| 29 | ||
| 30 | /* Save the callee-saved GPRs. There's no need to save the | |
| 31 | caller-saved GPRs since the eventual setcontext() or | |
| 32 | swapcontext() will assume those registers are all dead. | |
| 33 | Save value "1" to uc_flags to later recognize getcontext(). */ | |
| 34 | { movei r11, 1; ADDI_PTR r10, r0, UC_FLAGS_OFFSET } | |
| 0adc5f38 | 35 | { ST_PTR r10, r11; addli r10, r0, UC_REG(30) } |
| 63d143a2 CM |
36 | { ST r10, r30; ADDI_PTR r10, r10, REGSIZE } |
| 37 | { ST r10, r31; ADDI_PTR r10, r10, REGSIZE } | |
| 38 | { ST r10, r32; ADDI_PTR r10, r10, REGSIZE } | |
| 39 | { ST r10, r33; ADDI_PTR r10, r10, REGSIZE } | |
| 40 | { ST r10, r34; ADDI_PTR r10, r10, REGSIZE } | |
| 41 | { ST r10, r35; ADDI_PTR r10, r10, REGSIZE } | |
| 42 | { ST r10, r36; ADDI_PTR r10, r10, REGSIZE } | |
| 43 | { ST r10, r37; ADDI_PTR r10, r10, REGSIZE } | |
| 44 | { ST r10, r38; ADDI_PTR r10, r10, REGSIZE } | |
| 45 | { ST r10, r39; ADDI_PTR r10, r10, REGSIZE } | |
| 46 | { ST r10, r40; ADDI_PTR r10, r10, REGSIZE } | |
| 47 | { ST r10, r41; ADDI_PTR r10, r10, REGSIZE } | |
| 48 | { ST r10, r42; ADDI_PTR r10, r10, REGSIZE } | |
| 49 | { ST r10, r43; ADDI_PTR r10, r10, REGSIZE } | |
| 50 | { ST r10, r44; ADDI_PTR r10, r10, REGSIZE } | |
| 51 | { ST r10, r45; ADDI_PTR r10, r10, REGSIZE } | |
| 52 | { ST r10, r46; ADDI_PTR r10, r10, REGSIZE } | |
| 53 | { ST r10, r47; ADDI_PTR r10, r10, REGSIZE } | |
| 54 | { ST r10, r48; ADDI_PTR r10, r10, REGSIZE } | |
| 55 | { ST r10, r49; ADDI_PTR r10, r10, REGSIZE } | |
| 56 | { ST r10, r50; ADDI_PTR r10, r10, REGSIZE } | |
| 57 | { ST r10, r51; ADDI_PTR r10, r10, REGSIZE } | |
| 58 | { ST r10, r52; ADDI_PTR r10, r10, REGSIZE } | |
| 59 | { ST r10, tp; ADDI_PTR r10, r10, REGSIZE } | |
| 60 | { ST r10, sp; ADDI_PTR r10, r10, REGSIZE } | |
| 61 | { ST r10, lr; ADDI_PTR r10, r10, REGSIZE } | |
| 62 | lnk r11 /* Point PC at the "jrp lr" instruction. */ | |
| 63 | addli r11, r11, .Lreturn - . | |
| 64 | { ST r10, r11; ADDI_PTR r10, r10, REGSIZE } | |
| 65 | mfspr r11, INTERRUPT_CRITICAL_SECTION | |
| 66 | { | |
| 67 | ST r10, r11 | |
| 68 | movei r1, 0 | |
| 69 | } | |
| 70 | ||
| 71 | /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG / 8) */ | |
| 72 | { | |
| 73 | movei r3, _NSIG / 8 | |
| 74 | addli r2, r0, UC_SIGMASK_OFFSET | |
| 75 | } | |
| 76 | { | |
| 77 | movei r0, SIG_BLOCK | |
| 78 | moveli TREG_SYSCALL_NR_NAME, __NR_rt_sigprocmask | |
| 79 | } | |
| 80 | swint1 | |
| 81 | BNEZ r1, .Lsyscall_error | |
| 82 | ||
| 83 | .Lreturn: | |
| 84 | { | |
| 85 | movei r0, 0 | |
| 86 | jrp lr | |
| 87 | } | |
| 88 | ||
| 89 | .Lsyscall_error: | |
| 90 | j SYSCALL_ERROR_NAME | |
| 91 | ||
| 92 | END (__getcontext) | |
| 93 | .hidden __getcontext | |
| 94 | ||
| 95 | weak_alias (__getcontext, getcontext) |