diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h b/REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h new file mode 100644 index 0000000000..9b2c546b9d --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h @@ -0,0 +1,152 @@ +/* Copyright (C) 2003-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. + + 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 <tls.h> +#ifndef __ASSEMBLER__ +# include <nptl/pthreadP.h> +#endif + +#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt) + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .text; \ +L(pseudo_cancel): \ + cfi_startproc; \ + STM_##args \ + stmg %r13,%r15,104(%r15); \ + cfi_offset (%r15,-40); \ + cfi_offset (%r14,-48); \ + cfi_offset (%r13,-56); \ + lgr %r14,%r15; \ + aghi %r15,-160; \ + cfi_adjust_cfa_offset (160); \ + stg %r14,0(%r15); \ + brasl %r14,CENABLE; \ + lgr %r0,%r2; \ + LM_##args \ + .if SYS_ify (syscall_name) < 256; \ + svc SYS_ify (syscall_name); \ + .else; \ + lghi %r1,SYS_ify (syscall_name); \ + svc 0; \ + .endif; \ + LR7_##args \ + lgr %r13,%r2; \ + lgr %r2,%r0; \ + brasl %r14,CDISABLE; \ + lgr %r2,%r13; \ + lmg %r13,%r15,104+160(%r15); \ + cfi_endproc; \ + j L(pseudo_check); \ +ENTRY(name) \ + SINGLE_THREAD_P \ + jne L(pseudo_cancel); \ +.type __##syscall_name##_nocancel,@function; \ +.globl __##syscall_name##_nocancel; \ +__##syscall_name##_nocancel: \ + DO_CALL(syscall_name, args); \ +L(pseudo_check): \ + lghi %r4,-4095; \ + clgr %r2,%r4; \ + jgnl SYSCALL_ERROR_LABEL; \ +.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \ +L(pseudo_end): + +# if IS_IN (libpthread) +# define CENABLE __pthread_enable_asynccancel +# define CDISABLE __pthread_disable_asynccancel +# define __local_multiple_threads __pthread_multiple_threads +# elif IS_IN (libc) +# define CENABLE __libc_enable_asynccancel +# define CDISABLE __libc_disable_asynccancel +# define __local_multiple_threads __libc_multiple_threads +# elif IS_IN (librt) +# define CENABLE __librt_enable_asynccancel +# define CDISABLE __librt_disable_asynccancel +# else +# error Unsupported library +# endif + +#define STM_0 /* Nothing */ +#define STM_1 stg %r2,16(%r15); +#define STM_2 stmg %r2,%r3,16(%r15); +#define STM_3 stmg %r2,%r4,16(%r15); +#define STM_4 stmg %r2,%r5,16(%r15); +#define STM_5 stmg %r2,%r5,16(%r15); +#define STM_6 stmg %r2,%r7,16(%r15); + +#define LM_0 /* Nothing */ +#define LM_1 lg %r2,16+160(%r15); +#define LM_2 lmg %r2,%r3,16+160(%r15); +#define LM_3 lmg %r2,%r4,16+160(%r15); +#define LM_4 lmg %r2,%r5,16+160(%r15); +#define LM_5 lmg %r2,%r5,16+160(%r15); +#define LM_6 lmg %r2,%r5,16+160(%r15); \ + cfi_offset (%r7, -104); \ + lg %r7,160+160(%r15); + +#define LR7_0 /* Nothing */ +#define LR7_1 /* Nothing */ +#define LR7_2 /* Nothing */ +#define LR7_3 /* Nothing */ +#define LR7_4 /* Nothing */ +#define LR7_5 /* Nothing */ +#define LR7_6 lg %r7,56+160(%r15); \ + cfi_restore (%r7); + +# if IS_IN (libpthread) || IS_IN (libc) +# ifndef __ASSEMBLER__ +extern int __local_multiple_threads attribute_hidden; +# define SINGLE_THREAD_P \ + __builtin_expect (__local_multiple_threads == 0, 1) +# else +# define SINGLE_THREAD_P \ + larl %r1,__local_multiple_threads; \ + icm %r0,15,0(%r1); +# endif + +# else + +# ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# else +# define SINGLE_THREAD_P \ + ear %r1,%a0; \ + sllg %r1,%r1,32; \ + ear %r1,%a1; \ + icm %r1,15,MULTIPLE_THREADS_OFFSET(%r1); +# endif + +# endif + +#elif !defined __ASSEMBLER__ + +# define SINGLE_THREAD_P (1) +# define NO_CANCELLATION 1 + +#endif + +#ifndef __ASSEMBLER__ +# define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +#endif |