projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| a88c9263 UD |
1 | /* Copyright (C) 2003 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
| 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 | |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 19 | ||
| 20 | #include <sysdep.h> | |
| 21 | #include <tls.h> | |
| 22 | #ifndef __ASSEMBLER__ | |
| 23 | # include <nptl/pthreadP.h> | |
| 24 | #endif | |
| 25 | ||
| 7a114794 | 26 | #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt |
| a88c9263 UD |
27 | |
| 28 | # undef PSEUDO | |
| 29 | # define PSEUDO(name, syscall_name, args) \ | |
| 30 | .text; \ | |
| 31 | L(pseudo_cancel): \ | |
| 32 | STM_##args \ | |
| 33 | stm %r12,%r15,48(%r15); \ | |
| 34 | lr %r14,%r15; \ | |
| 35 | ahi %r15,-96; \ | |
| 36 | st %r14,0(%r15); \ | |
| 37 | basr %r13,0; \ | |
| 38 | 0: l %r1,1f-0b(%r13); \ | |
| 39 | bas %r14,0(%r1,%r13); \ | |
| 40 | lr %r0,%r2; \ | |
| 41 | LM_##args \ | |
| 42 | DO_CALL(syscall_name, args); \ | |
| 43 | l %r1,2f-0b(%r13); \ | |
| 44 | lr %r12,%r2; \ | |
| 45 | lr %r2,%r0; \ | |
| 46 | bas %r14,0(%r1,%r13); \ | |
| 47 | lr %r2,%r12; \ | |
| 48 | lm %r12,%r15,48+96(%r15); \ | |
| 49 | j L(pseudo_check); \ | |
| 50 | 1: .long CENABLE-0b; \ | |
| 51 | 2: .long CDISABLE-0b; \ | |
| 52 | ENTRY(name) \ | |
| 53 | SINGLE_THREAD_P(%r1) \ | |
| 54 | jne L(pseudo_cancel); \ | |
| 55 | DO_CALL(syscall_name, args); \ | |
| 56 | L(pseudo_check): \ | |
| 57 | lhi %r4,-4095; \ | |
| 58 | clr %r2,%r4; \ | |
| 59 | jnl SYSCALL_ERROR_LABEL; \ | |
| 60 | L(pseudo_end): | |
| 61 | ||
| 62 | # ifdef IS_IN_libpthread | |
| 63 | # define CENABLE __pthread_enable_asynccancel | |
| 64 | # define CDISABLE __pthread_disable_asynccancel | |
| 65 | # else | |
| 66 | # define CENABLE __libc_enable_asynccancel | |
| 67 | # define CDISABLE __libc_disable_asynccancel | |
| 68 | # endif | |
| 69 | ||
| 70 | #define STM_0 /* Nothing */ | |
| 71 | #define STM_1 st %r2,8(%r15); | |
| 72 | #define STM_2 stm %r2,%r3,8(%r15); | |
| 73 | #define STM_3 stm %r2,%r4,8(%r15); | |
| 74 | #define STM_4 stm %r2,%r5,8(%r15); | |
| 75 | #define STM_5 stm %r2,%r5,8(%r15); | |
| 76 | ||
| 77 | #define LM_0 /* Nothing */ | |
| 78 | #define LM_1 l %r2,8+96(%r15); | |
| 79 | #define LM_2 lm %r2,%r3,8+96(%r15); | |
| 80 | #define LM_3 lm %r2,%r4,8+96(%r15); | |
| 81 | #define LM_4 lm %r2,%r5,8+96(%r15); | |
| 82 | #define LM_5 lm %r2,%r5,8+96(%r15); | |
| 83 | ||
| 84 | # ifndef __ASSEMBLER__ | |
| 85 | # define SINGLE_THREAD_P \ | |
| 86 | __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ | |
| 1419a958 | 87 | header.multiple_threads) == 0, 1) |
| a88c9263 UD |
88 | # else |
| 89 | # define SINGLE_THREAD_P(reg) \ | |
| 90 | ear reg,%a0; \ | |
| 91 | icm reg,15,MULTIPLE_THREADS_OFFSET(reg); | |
| 92 | # endif | |
| 93 | ||
| 94 | #elif !defined __ASSEMBLER__ | |
| 95 | ||
| 96 | /* This code should never be used but we define it anyhow. */ | |
| 97 | # define SINGLE_THREAD_P (1) | |
| 98 | ||
| 99 | #endif |