diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h new file mode 100644 index 0000000000..cad13da3ba --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h @@ -0,0 +1,147 @@ +/* Cancellable system call stubs. Linux/PowerPC64 version. + Copyright (C) 2003-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.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) + +# define DASHDASHPFX(str) __##str + +#if _CALL_ELF == 2 +#define CANCEL_FRAMESIZE (FRAME_MIN_SIZE+16+48) +#define CANCEL_PARM_SAVE (FRAME_MIN_SIZE+16) +#else +#define CANCEL_FRAMESIZE (FRAME_MIN_SIZE+16) +#define CANCEL_PARM_SAVE (CANCEL_FRAMESIZE+FRAME_PARM_SAVE) +#endif + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ + .section ".text"; \ + ENTRY (name) \ + SINGLE_THREAD_P; \ + bne- .Lpseudo_cancel; \ + .type DASHDASHPFX(syscall_name##_nocancel),@function; \ + .globl DASHDASHPFX(syscall_name##_nocancel); \ + DASHDASHPFX(syscall_name##_nocancel): \ + DO_CALL (SYS_ify (syscall_name)); \ + PSEUDO_RET; \ + .size DASHDASHPFX(syscall_name##_nocancel),.-DASHDASHPFX(syscall_name##_nocancel); \ + .Lpseudo_cancel: \ + stdu 1,-CANCEL_FRAMESIZE(1); \ + cfi_adjust_cfa_offset (CANCEL_FRAMESIZE); \ + mflr 9; \ + std 9,CANCEL_FRAMESIZE+FRAME_LR_SAVE(1); \ + cfi_offset (lr, FRAME_LR_SAVE); \ + DOCARGS_##args; /* save syscall args around CENABLE. */ \ + CENABLE; \ + std 3,FRAME_MIN_SIZE(1); /* store CENABLE return value (MASK). */ \ + UNDOCARGS_##args; /* restore syscall args. */ \ + DO_CALL (SYS_ify (syscall_name)); \ + mfcr 0; /* save CR/R3 around CDISABLE. */ \ + std 3,FRAME_MIN_SIZE+8(1); \ + std 0,CANCEL_FRAMESIZE+FRAME_CR_SAVE(1); \ + cfi_offset (cr, FRAME_CR_SAVE); \ + ld 3,FRAME_MIN_SIZE(1); /* pass MASK to CDISABLE. */ \ + CDISABLE; \ + ld 9,CANCEL_FRAMESIZE+FRAME_LR_SAVE(1); \ + ld 0,CANCEL_FRAMESIZE+FRAME_CR_SAVE(1); /* restore CR/R3. */ \ + ld 3,FRAME_MIN_SIZE+8(1); \ + mtlr 9; \ + mtcr 0; \ + addi 1,1,CANCEL_FRAMESIZE; \ + cfi_adjust_cfa_offset (-CANCEL_FRAMESIZE); \ + cfi_restore (lr); \ + cfi_restore (cr) + +# define DOCARGS_0 +# define UNDOCARGS_0 + +# define DOCARGS_1 std 3,CANCEL_PARM_SAVE(1); DOCARGS_0 +# define UNDOCARGS_1 ld 3,CANCEL_PARM_SAVE(1); UNDOCARGS_0 + +# define DOCARGS_2 std 4,CANCEL_PARM_SAVE+8(1); DOCARGS_1 +# define UNDOCARGS_2 ld 4,CANCEL_PARM_SAVE+8(1); UNDOCARGS_1 + +# define DOCARGS_3 std 5,CANCEL_PARM_SAVE+16(1); DOCARGS_2 +# define UNDOCARGS_3 ld 5,CANCEL_PARM_SAVE+16(1); UNDOCARGS_2 + +# define DOCARGS_4 std 6,CANCEL_PARM_SAVE+24(1); DOCARGS_3 +# define UNDOCARGS_4 ld 6,CANCEL_PARM_SAVE+24(1); UNDOCARGS_3 + +# define DOCARGS_5 std 7,CANCEL_PARM_SAVE+32(1); DOCARGS_4 +# define UNDOCARGS_5 ld 7,CANCEL_PARM_SAVE+32(1); UNDOCARGS_4 + +# define DOCARGS_6 std 8,CANCEL_PARM_SAVE+40(1); DOCARGS_5 +# define UNDOCARGS_6 ld 8,CANCEL_PARM_SAVE+40(1); UNDOCARGS_5 + +# if IS_IN (libpthread) +# ifdef SHARED +# define CENABLE bl JUMPTARGET(__pthread_enable_asynccancel) +# define CDISABLE bl JUMPTARGET(__pthread_disable_asynccancel) +# else +# define CENABLE bl JUMPTARGET(__pthread_enable_asynccancel); nop +# define CDISABLE bl JUMPTARGET(__pthread_disable_asynccancel); nop +# endif +# elif IS_IN (libc) +# ifdef SHARED +# define CENABLE bl JUMPTARGET(__libc_enable_asynccancel) +# define CDISABLE bl JUMPTARGET(__libc_disable_asynccancel) +# else +# define CENABLE bl JUMPTARGET(__libc_enable_asynccancel); nop +# define CDISABLE bl JUMPTARGET(__libc_disable_asynccancel); nop +# endif +# elif IS_IN (librt) +# ifdef SHARED +# define CENABLE bl JUMPTARGET(__librt_enable_asynccancel) +# define CDISABLE bl JUMPTARGET(__librt_disable_asynccancel) +# else +# define CENABLE bl JUMPTARGET(__librt_enable_asynccancel); nop +# define CDISABLE bl JUMPTARGET(__librt_disable_asynccancel); nop +# endif +# else +# error Unsupported library +# endif + +# ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# else +# define SINGLE_THREAD_P \ + lwz 10,MULTIPLE_THREADS_OFFSET(13); \ + cmpwi 10,0 +# 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 |