mirror of
https://sourceware.org/git/glibc.git
synced 2025-07-29 11:41:21 +03:00
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.
This commit is contained in:
@ -17,221 +17,10 @@
|
||||
|
||||
#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)
|
||||
|
||||
# ifndef NO_ERROR
|
||||
# define NO_ERROR -0x1000
|
||||
# endif
|
||||
|
||||
/* The syscall cancellation mechanism requires userspace
|
||||
assistance, the following code does roughly this:
|
||||
|
||||
do arguments (read arg5 and arg6 to registers)
|
||||
setup frame
|
||||
|
||||
check if there are threads, yes jump to pseudo_cancel
|
||||
|
||||
unthreaded:
|
||||
syscall
|
||||
check syscall return (jump to pre_end)
|
||||
set errno
|
||||
set return to -1
|
||||
(jump to pre_end)
|
||||
|
||||
pseudo_cancel:
|
||||
cenable
|
||||
syscall
|
||||
cdisable
|
||||
check syscall return (jump to pre_end)
|
||||
set errno
|
||||
set return to -1
|
||||
|
||||
pre_end
|
||||
restore stack
|
||||
|
||||
It is expected that 'ret' and 'END' macros will
|
||||
append an 'undo arguments' and 'return' to the
|
||||
this PSEUDO macro. */
|
||||
|
||||
# undef PSEUDO
|
||||
# define PSEUDO(name, syscall_name, args) \
|
||||
ENTRY (__##syscall_name##_nocancel) \
|
||||
DOARGS_##args ASM_LINE_SEP \
|
||||
stwm TREG, 64(%sp) ASM_LINE_SEP \
|
||||
.cfi_def_cfa_offset -64 ASM_LINE_SEP \
|
||||
.cfi_offset TREG, 0 ASM_LINE_SEP \
|
||||
stw %sp, -4(%sp) ASM_LINE_SEP \
|
||||
stw %r19, -32(%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 19, 32 ASM_LINE_SEP \
|
||||
/* Save r19 */ ASM_LINE_SEP \
|
||||
SAVE_PIC(TREG) ASM_LINE_SEP \
|
||||
/* Do syscall, delay loads # */ ASM_LINE_SEP \
|
||||
ble 0x100(%sr2,%r0) ASM_LINE_SEP \
|
||||
ldi SYS_ify (syscall_name), %r20 /* delay */ ASM_LINE_SEP \
|
||||
ldi NO_ERROR,%r1 ASM_LINE_SEP \
|
||||
cmpb,>>=,n %r1,%ret0,L(pre_nc_end) ASM_LINE_SEP \
|
||||
/* Restore r19 from TREG */ ASM_LINE_SEP \
|
||||
LOAD_PIC(TREG) /* delay */ ASM_LINE_SEP \
|
||||
SYSCALL_ERROR_HANDLER ASM_LINE_SEP \
|
||||
/* Use TREG for temp storage */ ASM_LINE_SEP \
|
||||
copy %ret0, TREG /* delay */ ASM_LINE_SEP \
|
||||
/* OPTIMIZE: Don't reload r19 */ ASM_LINE_SEP \
|
||||
/* do a -1*syscall_ret0 */ ASM_LINE_SEP \
|
||||
sub %r0, TREG, TREG ASM_LINE_SEP \
|
||||
/* Store into errno location */ ASM_LINE_SEP \
|
||||
stw TREG, 0(%sr0,%ret0) ASM_LINE_SEP \
|
||||
/* return -1 as error */ ASM_LINE_SEP \
|
||||
ldi -1, %ret0 ASM_LINE_SEP \
|
||||
L(pre_nc_end): ASM_LINE_SEP \
|
||||
/* No need to LOAD_PIC */ ASM_LINE_SEP \
|
||||
/* Undo frame */ ASM_LINE_SEP \
|
||||
ldwm -64(%sp),TREG ASM_LINE_SEP \
|
||||
/* Restore rp before exit */ ASM_LINE_SEP \
|
||||
ldw -20(%sp), %rp ASM_LINE_SEP \
|
||||
ret ASM_LINE_SEP \
|
||||
END(__##syscall_name##_nocancel) ASM_LINE_SEP \
|
||||
/**********************************************/ASM_LINE_SEP \
|
||||
ENTRY (name) \
|
||||
DOARGS_##args ASM_LINE_SEP \
|
||||
stwm TREG, 64(%sp) ASM_LINE_SEP \
|
||||
.cfi_def_cfa_offset -64 ASM_LINE_SEP \
|
||||
.cfi_offset TREG, 0 ASM_LINE_SEP \
|
||||
stw %sp, -4(%sp) ASM_LINE_SEP \
|
||||
stw %r19, -32(%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 19, 32 ASM_LINE_SEP \
|
||||
/* Done setting up frame, continue... */ ASM_LINE_SEP \
|
||||
SINGLE_THREAD_P ASM_LINE_SEP \
|
||||
cmpib,<>,n 0,%ret0,L(pseudo_cancel) ASM_LINE_SEP \
|
||||
L(unthreaded): ASM_LINE_SEP \
|
||||
/* Save r19 */ ASM_LINE_SEP \
|
||||
SAVE_PIC(TREG) ASM_LINE_SEP \
|
||||
/* Do syscall, delay loads # */ ASM_LINE_SEP \
|
||||
ble 0x100(%sr2,%r0) ASM_LINE_SEP \
|
||||
ldi SYS_ify (syscall_name), %r20 /* delay */ ASM_LINE_SEP \
|
||||
ldi NO_ERROR,%r1 ASM_LINE_SEP \
|
||||
cmpb,>>=,n %r1,%ret0,L(pre_end) ASM_LINE_SEP \
|
||||
/* Restore r19 from TREG */ ASM_LINE_SEP \
|
||||
LOAD_PIC(TREG) /* delay */ ASM_LINE_SEP \
|
||||
SYSCALL_ERROR_HANDLER ASM_LINE_SEP \
|
||||
/* Use TREG for temp storage */ ASM_LINE_SEP \
|
||||
copy %ret0, TREG /* delay */ ASM_LINE_SEP \
|
||||
/* OPTIMIZE: Don't reload r19 */ ASM_LINE_SEP \
|
||||
/* do a -1*syscall_ret0 */ ASM_LINE_SEP \
|
||||
sub %r0, TREG, TREG ASM_LINE_SEP \
|
||||
/* Store into errno location */ ASM_LINE_SEP \
|
||||
stw TREG, 0(%sr0,%ret0) ASM_LINE_SEP \
|
||||
b L(pre_end) ASM_LINE_SEP \
|
||||
/* return -1 as error */ ASM_LINE_SEP \
|
||||
ldi -1, %ret0 /* delay */ ASM_LINE_SEP \
|
||||
L(pseudo_cancel): ASM_LINE_SEP \
|
||||
PUSHARGS_##args /* Save args */ ASM_LINE_SEP \
|
||||
/* Save r19 into TREG */ ASM_LINE_SEP \
|
||||
CENABLE /* FUNC CALL */ ASM_LINE_SEP \
|
||||
SAVE_PIC(TREG) /* delay */ ASM_LINE_SEP \
|
||||
/* restore syscall args */ ASM_LINE_SEP \
|
||||
POPARGS_##args ASM_LINE_SEP \
|
||||
/* save mask from cenable (use stub rp slot) */ ASM_LINE_SEP \
|
||||
stw %ret0, -24(%sp) ASM_LINE_SEP \
|
||||
/* ... SYSCALL ... */ ASM_LINE_SEP \
|
||||
ble 0x100(%sr2,%r0) ASM_LINE_SEP \
|
||||
ldi SYS_ify (syscall_name), %r20 /* delay */ ASM_LINE_SEP \
|
||||
/* ............... */ ASM_LINE_SEP \
|
||||
LOAD_PIC(TREG) ASM_LINE_SEP \
|
||||
/* pass mask as arg0 to cdisable */ ASM_LINE_SEP \
|
||||
ldw -24(%sp), %r26 ASM_LINE_SEP \
|
||||
CDISABLE ASM_LINE_SEP \
|
||||
stw %ret0, -24(%sp) /* delay */ ASM_LINE_SEP \
|
||||
/* Restore syscall return */ ASM_LINE_SEP \
|
||||
ldw -24(%sp), %ret0 ASM_LINE_SEP \
|
||||
/* compare error */ ASM_LINE_SEP \
|
||||
ldi NO_ERROR,%r1 ASM_LINE_SEP \
|
||||
/* branch if no error */ ASM_LINE_SEP \
|
||||
cmpb,>>=,n %r1,%ret0,L(pre_end) ASM_LINE_SEP \
|
||||
LOAD_PIC(TREG) /* cond. nullify */ ASM_LINE_SEP \
|
||||
copy %ret0, TREG /* save syscall return */ ASM_LINE_SEP \
|
||||
SYSCALL_ERROR_HANDLER ASM_LINE_SEP \
|
||||
/* make syscall res value positive */ ASM_LINE_SEP \
|
||||
sub %r0, TREG, TREG /* delay */ ASM_LINE_SEP \
|
||||
/* No need to LOAD_PIC */ ASM_LINE_SEP \
|
||||
/* store into errno location */ ASM_LINE_SEP \
|
||||
stw TREG, 0(%sr0,%ret0) ASM_LINE_SEP \
|
||||
/* return -1 */ ASM_LINE_SEP \
|
||||
ldi -1, %ret0 ASM_LINE_SEP \
|
||||
L(pre_end): ASM_LINE_SEP \
|
||||
/* No need to LOAD_PIC */ ASM_LINE_SEP \
|
||||
/* Undo frame */ ASM_LINE_SEP \
|
||||
ldwm -64(%sp),TREG ASM_LINE_SEP \
|
||||
/* Restore rp before exit */ ASM_LINE_SEP \
|
||||
ldw -20(%sp), %rp ASM_LINE_SEP
|
||||
|
||||
/* Save arguments into our frame */
|
||||
# define PUSHARGS_0 /* nothing to do */
|
||||
# define PUSHARGS_1 PUSHARGS_0 stw %r26, -36(%sr0,%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 26, 28 ASM_LINE_SEP
|
||||
# define PUSHARGS_2 PUSHARGS_1 stw %r25, -40(%sr0,%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 25, 24 ASM_LINE_SEP
|
||||
# define PUSHARGS_3 PUSHARGS_2 stw %r24, -44(%sr0,%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 24, 20 ASM_LINE_SEP
|
||||
# define PUSHARGS_4 PUSHARGS_3 stw %r23, -48(%sr0,%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 23, 16 ASM_LINE_SEP
|
||||
# define PUSHARGS_5 PUSHARGS_4 stw %r22, -52(%sr0,%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 22, 12 ASM_LINE_SEP
|
||||
# define PUSHARGS_6 PUSHARGS_5 stw %r21, -56(%sr0,%sp) ASM_LINE_SEP \
|
||||
.cfi_offset 21, 8 ASM_LINE_SEP
|
||||
|
||||
/* Bring them back from the stack */
|
||||
# define POPARGS_0 /* nothing to do */
|
||||
# define POPARGS_1 POPARGS_0 ldw -36(%sr0,%sp), %r26 ASM_LINE_SEP
|
||||
# define POPARGS_2 POPARGS_1 ldw -40(%sr0,%sp), %r25 ASM_LINE_SEP
|
||||
# define POPARGS_3 POPARGS_2 ldw -44(%sr0,%sp), %r24 ASM_LINE_SEP
|
||||
# define POPARGS_4 POPARGS_3 ldw -48(%sr0,%sp), %r23 ASM_LINE_SEP
|
||||
# define POPARGS_5 POPARGS_4 ldw -52(%sr0,%sp), %r22 ASM_LINE_SEP
|
||||
# define POPARGS_6 POPARGS_5 ldw -56(%sr0,%sp), %r21 ASM_LINE_SEP
|
||||
|
||||
# if IS_IN (libpthread)
|
||||
# ifdef PIC
|
||||
# define CENABLE .import __pthread_enable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __pthread_enable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# define CDISABLE .import __pthread_disable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __pthread_disable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# else
|
||||
# define CENABLE .import __pthread_enable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __pthread_enable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# define CDISABLE .import __pthread_disable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __pthread_disable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# endif
|
||||
# elif IS_IN (libc)
|
||||
# ifdef PIC
|
||||
# define CENABLE .import __libc_enable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __libc_enable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# define CDISABLE .import __libc_disable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __libc_disable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# else
|
||||
# define CENABLE .import __libc_enable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __libc_enable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# define CDISABLE .import __libc_disable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __libc_disable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# endif
|
||||
# elif IS_IN (librt)
|
||||
# ifdef PIC
|
||||
# define CENABLE .import __librt_enable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __librt_enable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# define CDISABLE .import __librt_disable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __librt_disable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# else
|
||||
# define CENABLE .import __librt_enable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __librt_enable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# define CDISABLE .import __librt_disable_asynccancel,code ASM_LINE_SEP \
|
||||
bl __librt_disable_asynccancel,%r2 ASM_LINE_SEP
|
||||
# endif
|
||||
# else
|
||||
# error Unsupported library
|
||||
# endif
|
||||
|
||||
# if IS_IN (libpthread)
|
||||
# define __local_multiple_threads __pthread_multiple_threads
|
||||
# elif IS_IN (libc)
|
||||
@ -242,17 +31,10 @@ L(pre_end): ASM_LINE_SEP \
|
||||
# error Unsupported library
|
||||
# endif
|
||||
|
||||
# ifndef __ASSEMBLER__
|
||||
# define SINGLE_THREAD_P \
|
||||
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
|
||||
header.multiple_threads) == 0, 1)
|
||||
# else
|
||||
/* Read the value of header.multiple_threads from the thread pointer */
|
||||
# define SINGLE_THREAD_P \
|
||||
mfctl %cr27, %ret0 ASM_LINE_SEP \
|
||||
ldw MULTIPLE_THREADS_THREAD_OFFSET(%sr0,%ret0),%ret0 ASM_LINE_SEP
|
||||
# endif
|
||||
#elif !defined __ASSEMBLER__
|
||||
# define SINGLE_THREAD_P \
|
||||
__glibc_likely (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)
|
||||
|
||||
#else
|
||||
|
||||
/* This code should never be used but we define it anyhow. */
|
||||
# define SINGLE_THREAD_P (1)
|
||||
@ -261,8 +43,5 @@ L(pre_end): ASM_LINE_SEP \
|
||||
#endif
|
||||
/* IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt) */
|
||||
|
||||
#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)
|
||||
|
Reference in New Issue
Block a user