diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2017-01-22 10:24:51 +0100 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-01-28 10:31:19 +0100 |
| commit | bddde5860ffb8a78587854cc8e3e914bd69269ca (patch) | |
| tree | d37c90a9ca983fb8be614844343ba2941927f88a /libc/sysdeps/linux/x86_64 | |
| parent | 30adfbeb8843c28869cc6ee33d7c556721cb241a (diff) | |
remove PID caching
Follow GNU C Library from c579f48edba88380635ab98cb612030e3ed8691e
and remove the PID caching. These simplifies the architecture specific
assembly code.
The run of the test suite found no regressions, it even solves
some of the test failures for x86/x86_64/sparc.
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Acked-by: Matthew Fortune <Matthew.Fortune@imgtec.com>
Acked-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Diffstat (limited to 'libc/sysdeps/linux/x86_64')
| -rw-r--r-- | libc/sysdeps/linux/x86_64/Makefile.arch | 6 | ||||
| -rw-r--r-- | libc/sysdeps/linux/x86_64/clone.S | 13 | ||||
| -rw-r--r-- | libc/sysdeps/linux/x86_64/vfork.S | 8 |
3 files changed, 2 insertions, 25 deletions
diff --git a/libc/sysdeps/linux/x86_64/Makefile.arch b/libc/sysdeps/linux/x86_64/Makefile.arch index 2bc838f0e..d84e43daa 100644 --- a/libc/sysdeps/linux/x86_64/Makefile.arch +++ b/libc/sysdeps/linux/x86_64/Makefile.arch @@ -6,11 +6,9 @@ # CSRC-y := brk.c __syscall_error.c sigaction.c +SSRC-y := __longjmp.S setjmp.S syscall.S bsd-setjmp.S bsd-_setjmp.S \ + vfork.S clone.S -SSRC-y := \ - __longjmp.S setjmp.S syscall.S bsd-setjmp.S bsd-_setjmp.S - -SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += vfork.S clone.S ARCH_OBJ_FILTEROUT-$(UCLIBC_LINUX_SPECIFIC) := sched_getcpu.c ifeq ($(UCLIBC_LINUX_SPECIFIC),y) SSRC-$(UCLIBC_HAS_TLS) += sched_getcpu.S diff --git a/libc/sysdeps/linux/x86_64/clone.S b/libc/sysdeps/linux/x86_64/clone.S index 374504140..3dda8da02 100644 --- a/libc/sysdeps/linux/x86_64/clone.S +++ b/libc/sysdeps/linux/x86_64/clone.S @@ -89,19 +89,6 @@ clone: the outermost frame obviously. */ xorl %ebp, %ebp -#ifdef RESET_PID - testq $CLONE_THREAD, %rdi - jne 1f - testq $CLONE_VM, %rdi - movl $-1, %eax - jne 2f - movl $__NR_getpid, %eax - syscall -2: movl %eax, %fs:PID - movl %eax, %fs:TID -1: -#endif - /* Set up arguments for the function call. */ popq %rax /* Function to call. */ popq %rdi /* Argument. */ diff --git a/libc/sysdeps/linux/x86_64/vfork.S b/libc/sysdeps/linux/x86_64/vfork.S index a8a2f6e4b..8e096bc3e 100644 --- a/libc/sysdeps/linux/x86_64/vfork.S +++ b/libc/sysdeps/linux/x86_64/vfork.S @@ -38,10 +38,6 @@ __vfork: is preserved by the syscall and that we're allowed to destroy. */ popq %rdi -#ifdef SAVE_PID - SAVE_PID -#endif - /* Stuff the syscall number in RAX and enter into the kernel. */ movl $__NR_vfork, %eax syscall @@ -49,10 +45,6 @@ __vfork: /* Push back the return PC. */ pushq %rdi -#ifdef RESTORE_PID - RESTORE_PID -#endif - cmpl $-4095, %eax jae __syscall_error /* Branch forward if it failed. */ |