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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2015-11-12 14:01:36 -0200 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-08-24 14:58:35 -0300 |
commit | ebd6f0076a83bb25a9853773fbfbcff00b4c9a32 (patch) | |
tree | 07b02599002f24fd7fa37e1ddfa332f6a236ec99 /sysdeps/unix/sysv/linux/i386 | |
parent | 8aa48656bb00074f3f422d805f15d07d786970ba (diff) | |
download | glibc-ebd6f0076a83bb25a9853773fbfbcff00b4c9a32.tar.gz glibc-ebd6f0076a83bb25a9853773fbfbcff00b4c9a32.tar.xz glibc-ebd6f0076a83bb25a9853773fbfbcff00b4c9a32.zip |
Remove cancellation support for syscall generation
This patch removes the cancellation mark from the auto-generation syscall script. Now all the cancellable syscalls are done throught C code using the SYSCALL_CANCEL macro. It simplifies the assembly required to each architecture port, since the SYSCALL_CANCEL uses the already defined INLINE_SYSCALL macros, and allows a more straigh fix on cancellation machanism (since no more specific assembly fixes will be required). Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.A Also with build-many-glibc.py with remaning touched architectures. * sysdeps/unix/make-syscalls.sh: Remove cancellable tagging for syscall definitions. * sysdeps/unix/syscall-template.S (SYSCALL_CANCELLABLE): Remove definition. * sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (__local_enable_asynccancel): Likewise. [IS_IN (libpthread)] (__local_disable_asynccancel): Likewise. [IS_IN (libc)] (__local_enable_asynccancel): Likewise. [IS_IN (libc)] (__local_enable_asynccancel): Likewise. [IS_IN (librt)] (__local_disable_asynccancel): Likewise. [IS_IN (librt)] (__local_disable_asynccancel): Likewise. (CENABLE): Likewise. (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/arm/sysdep-cancel.h (PSEUDO): Remove defintion. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/mips/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Remove file. * sysdeps/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h: New file. * sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Remove file. * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h: New file. * sysdeps/unix/sysv/linux/tile/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise. * sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (PSEUDO): Remove definition. (PSEUDO_END): Likewise. [IS_IN (libpthread)] (CENABLE): Likewise. [IS_IN (libpthread)] (CDISABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (libc)] (CENABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [IS_IN (librt)] (CDISABLE): Likewise. [__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep-cancel.h | 129 |
1 files changed, 6 insertions, 123 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h b/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h index ebf601918f..7ad851ade6 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h @@ -18,136 +18,19 @@ #include <sysdep.h> #include <tls.h> -#ifndef __ASSEMBLER__ -# include <nptl/pthreadP.h> -#endif +#include <nptl/pthreadP.h> #if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt) -# undef PSEUDO -# define PSEUDO(name, syscall_name, args) \ - .text; \ - ENTRY (name) \ - cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \ - jne L(pseudo_cancel); \ - .type __##syscall_name##_nocancel,@function; \ - .globl __##syscall_name##_nocancel; \ - __##syscall_name##_nocancel: \ - DO_CALL (syscall_name, args); \ - cmpl $-4095, %eax; \ - jae SYSCALL_ERROR_LABEL; \ - ret; \ - .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \ - L(pseudo_cancel): \ - CENABLE \ - SAVE_OLDTYPE_##args \ - PUSHCARGS_##args \ - DOCARGS_##args \ - movl $SYS_ify (syscall_name), %eax; \ - ENTER_KERNEL; \ - POPCARGS_##args; \ - POPSTATE_##args \ - cmpl $-4095, %eax; \ - jae SYSCALL_ERROR_LABEL - -# define SAVE_OLDTYPE_0 movl %eax, %ecx; -# define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0 -# define SAVE_OLDTYPE_2 pushl %eax; cfi_adjust_cfa_offset (4); -# define SAVE_OLDTYPE_3 SAVE_OLDTYPE_2 -# define SAVE_OLDTYPE_4 SAVE_OLDTYPE_2 -# define SAVE_OLDTYPE_5 SAVE_OLDTYPE_2 -# define SAVE_OLDTYPE_6 SAVE_OLDTYPE_2 - -# define PUSHCARGS_0 /* No arguments to push. */ -# define DOCARGS_0 /* No arguments to frob. */ -# define POPCARGS_0 /* No arguments to pop. */ -# define _PUSHCARGS_0 /* No arguments to push. */ -# define _POPCARGS_0 /* No arguments to pop. */ - -# define PUSHCARGS_1 movl %ebx, %edx; cfi_register (ebx, edx); PUSHCARGS_0 -# define DOCARGS_1 _DOARGS_1 (4) -# define POPCARGS_1 POPCARGS_0; movl %edx, %ebx; cfi_restore (ebx); -# define _PUSHCARGS_1 pushl %ebx; cfi_adjust_cfa_offset (4); \ - cfi_rel_offset (ebx, 0); _PUSHCARGS_0 -# define _POPCARGS_1 _POPCARGS_0; popl %ebx; \ - cfi_adjust_cfa_offset (-4); cfi_restore (ebx); - -# define PUSHCARGS_2 PUSHCARGS_1 -# define DOCARGS_2 _DOARGS_2 (12) -# define POPCARGS_2 POPCARGS_1 -# define _PUSHCARGS_2 _PUSHCARGS_1 -# define _POPCARGS_2 _POPCARGS_1 - -# define PUSHCARGS_3 _PUSHCARGS_2 -# define DOCARGS_3 _DOARGS_3 (20) -# define POPCARGS_3 _POPCARGS_3 -# define _PUSHCARGS_3 _PUSHCARGS_2 -# define _POPCARGS_3 _POPCARGS_2 +# define SINGLE_THREAD_P \ + __glibc_likely (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0) -# define PUSHCARGS_4 _PUSHCARGS_4 -# define DOCARGS_4 _DOARGS_4 (28) -# define POPCARGS_4 _POPCARGS_4 -# define _PUSHCARGS_4 pushl %esi; cfi_adjust_cfa_offset (4); \ - cfi_rel_offset (esi, 0); _PUSHCARGS_3 -# define _POPCARGS_4 _POPCARGS_3; popl %esi; \ - cfi_adjust_cfa_offset (-4); cfi_restore (esi); - -# define PUSHCARGS_5 _PUSHCARGS_5 -# define DOCARGS_5 _DOARGS_5 (36) -# define POPCARGS_5 _POPCARGS_5 -# define _PUSHCARGS_5 pushl %edi; cfi_adjust_cfa_offset (4); \ - cfi_rel_offset (edi, 0); _PUSHCARGS_4 -# define _POPCARGS_5 _POPCARGS_4; popl %edi; \ - cfi_adjust_cfa_offset (-4); cfi_restore (edi); - -# define PUSHCARGS_6 _PUSHCARGS_6 -# define DOCARGS_6 _DOARGS_6 (44) -# define POPCARGS_6 _POPCARGS_6 -# define _PUSHCARGS_6 pushl %ebp; cfi_adjust_cfa_offset (4); \ - cfi_rel_offset (ebp, 0); _PUSHCARGS_5 -# define _POPCARGS_6 _POPCARGS_5; popl %ebp; \ - cfi_adjust_cfa_offset (-4); cfi_restore (ebp); - -# if IS_IN (libpthread) -# define CENABLE call __pthread_enable_asynccancel; -# define CDISABLE call __pthread_disable_asynccancel -# elif IS_IN (libc) -# define CENABLE call __libc_enable_asynccancel; -# define CDISABLE call __libc_disable_asynccancel -# elif IS_IN (librt) -# define CENABLE call __librt_enable_asynccancel; -# define CDISABLE call __librt_disable_asynccancel -# else -# error Unsupported library -# endif -# define POPSTATE_0 \ - pushl %eax; cfi_adjust_cfa_offset (4); movl %ecx, %eax; \ - CDISABLE; popl %eax; cfi_adjust_cfa_offset (-4); -# define POPSTATE_1 POPSTATE_0 -# define POPSTATE_2 xchgl (%esp), %eax; CDISABLE; popl %eax; \ - cfi_adjust_cfa_offset (-4); -# define POPSTATE_3 POPSTATE_2 -# define POPSTATE_4 POPSTATE_3 -# define POPSTATE_5 POPSTATE_4 -# define POPSTATE_6 POPSTATE_5 - -# ifndef __ASSEMBLER__ -# define SINGLE_THREAD_P \ - __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ - header.multiple_threads) == 0, 1) -# else -# define SINGLE_THREAD_P cmpl $0, %gs:MULTIPLE_THREADS_OFFSET -# endif - -#elif !defined __ASSEMBLER__ +#else # 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 +#define RTLD_SINGLE_THREAD_P \ + __glibc_likely (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0) |