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authorWaldemar Brodkorb <wbx@openadk.org>2017-01-22 10:24:51 +0100
committerWaldemar Brodkorb <wbx@openadk.org>2017-01-28 10:31:19 +0100
commitbddde5860ffb8a78587854cc8e3e914bd69269ca (patch)
treed37c90a9ca983fb8be614844343ba2941927f88a /libc/sysdeps/linux
parent30adfbeb8843c28869cc6ee33d7c556721cb241a (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')
-rw-r--r--libc/sysdeps/linux/arc/clone.S13
-rw-r--r--libc/sysdeps/linux/arc/vfork.S13
-rw-r--r--libc/sysdeps/linux/arm/clone.S18
-rw-r--r--libc/sysdeps/linux/arm/vfork.S13
-rw-r--r--libc/sysdeps/linux/common/bits/kernel-features.h7
-rw-r--r--libc/sysdeps/linux/i386/Makefile.arch7
-rw-r--r--libc/sysdeps/linux/i386/clone.S8
-rw-r--r--libc/sysdeps/linux/i386/vfork.S8
-rw-r--r--libc/sysdeps/linux/ia64/clone2.S19
-rw-r--r--libc/sysdeps/linux/metag/clone.S21
-rw-r--r--libc/sysdeps/linux/metag/vfork.S12
-rw-r--r--libc/sysdeps/linux/mips/Makefile.arch4
-rw-r--r--libc/sysdeps/linux/mips/clone.S28
-rw-r--r--libc/sysdeps/linux/mips/vfork.S12
-rw-r--r--libc/sysdeps/linux/nds32/clone.S24
-rw-r--r--libc/sysdeps/linux/nds32/vfork.S14
-rw-r--r--libc/sysdeps/linux/nios2/clone.S8
-rw-r--r--libc/sysdeps/linux/nios2/vfork.S17
-rw-r--r--libc/sysdeps/linux/powerpc/Makefile.arch4
-rw-r--r--libc/sysdeps/linux/powerpc/clone.S30
-rw-r--r--libc/sysdeps/linux/sh/Makefile.arch7
-rw-r--r--libc/sysdeps/linux/sh/clone.S36
-rw-r--r--libc/sysdeps/linux/sparc/Makefile.arch8
-rw-r--r--libc/sysdeps/linux/sparc/clone.S17
-rw-r--r--libc/sysdeps/linux/sparc/vfork.S2
-rw-r--r--libc/sysdeps/linux/x86_64/Makefile.arch6
-rw-r--r--libc/sysdeps/linux/x86_64/clone.S13
-rw-r--r--libc/sysdeps/linux/x86_64/vfork.S8
-rw-r--r--libc/sysdeps/linux/xtensa/Makefile.arch4
-rw-r--r--libc/sysdeps/linux/xtensa/clone.S19
-rw-r--r--libc/sysdeps/linux/xtensa/vfork.S25
31 files changed, 20 insertions, 405 deletions
diff --git a/libc/sysdeps/linux/arc/clone.S b/libc/sysdeps/linux/arc/clone.S
index 3942b88f7..c2ce906c9 100644
--- a/libc/sysdeps/linux/arc/clone.S
+++ b/libc/sysdeps/linux/arc/clone.S
@@ -61,20 +61,9 @@ ENTRY(clone)
; Setup TP register (since kernel doesn't do that)
and.f 0, r12, CLONE_SETTLS
bz .Lnext_clone_quirk
- SET_TP r9
+ mov r25, r9
.Lnext_clone_quirk:
-#ifdef RESET_PID
- bbit1 r12, 16, .Lgo_thread ; CLONE_THREAD = (1 << 16)
-
- mov r8, __NR_getpid
- ARC_TRAP_INSN ; r0 has PID
- THREAD_SELF r1 ; Get to struct pthread (just before TCB)
- st r0, [r1, PTHREAD_PID]
- st r0, [r1, PTHREAD_TID]
-
-.Lgo_thread:
-#endif
#endif
; child jumps off to @fn with @arg as argument, and returns here
jl.d [r10]
diff --git a/libc/sysdeps/linux/arc/vfork.S b/libc/sysdeps/linux/arc/vfork.S
index 573a29f26..11959b66b 100644
--- a/libc/sysdeps/linux/arc/vfork.S
+++ b/libc/sysdeps/linux/arc/vfork.S
@@ -16,25 +16,12 @@
#define CLONE_FLAGS_FOR_VFORK (CLONE_VM|CLONE_VFORK|SIGCHLD)
ENTRY(__vfork)
-#ifdef SAVE_PID
- THREAD_SELF r1 ; Get to struct pthread (just before TCB)
- ld r2, [r1, PTHREAD_PID]
- neg.f r3, r2
- bset.z r3, r3, 31
- st r3, [r1, PTHREAD_PID]
-#endif
mov r0, CLONE_FLAGS_FOR_VFORK
mov_s r1, sp
mov r8, __NR_clone
ARC_TRAP_INSN
cmp r0, 0
-#ifdef RESTORE_PID
- bz 1f ; child continues
- THREAD_SELF r1 ; Get to struct pthread (just before TCB)
- st r2, [r1, PTHREAD_PID]
-1:
-#endif
jge [blink] ; pid >=0 return, else detour via tailcall to errno
b __syscall_error
diff --git a/libc/sysdeps/linux/arm/clone.S b/libc/sysdeps/linux/arm/clone.S
index 0b293ecb7..b156e932b 100644
--- a/libc/sysdeps/linux/arm/clone.S
+++ b/libc/sysdeps/linux/arm/clone.S
@@ -110,9 +110,6 @@ __clone:
@ do the system call
@ get flags
mov r0, r2
-#ifdef RESET_PID
- mov ip, r2
-#endif
@ new sp is already in r1
push {r4, r7}
cfi_adjust_cfa_offset (8)
@@ -138,21 +135,6 @@ PSEUDO_END (__clone)
1:
.fnstart
.cantunwind
-#ifdef RESET_PID
- tst ip, #CLONE_THREAD
- bne 3f
- GET_TLS (lr)
- mov r1, r0
- tst ip, #CLONE_VM
- ldr r7, =SYS_ify(getpid)
- ite ne
- movne r0, #-1
- swieq 0x0
- NEGOFF_ADJ_BASE (r1, TID_OFFSET)
- str r0, NEGOFF_OFF1 (r1, TID_OFFSET)
- str r0, NEGOFF_OFF2 (r1, PID_OFFSET, TID_OFFSET)
-3:
-#endif
@ pick the function arg and call address off the stack and execute
ldr r0, [sp, #4]
mov lr, pc
diff --git a/libc/sysdeps/linux/arm/vfork.S b/libc/sysdeps/linux/arm/vfork.S
index 221a90c40..455b2f8d9 100644
--- a/libc/sysdeps/linux/arm/vfork.S
+++ b/libc/sysdeps/linux/arm/vfork.S
@@ -13,15 +13,6 @@
#include <bits/errno.h>
#include <sys/syscall.h>
-#ifndef SAVE_PID
-#define SAVE_PID
-#endif
-
-#ifndef RESTORE_PID
-#define RESTORE_PID
-#endif
-
-
#ifdef __NR_fork
.text
.global __vfork
@@ -33,9 +24,7 @@
.thumb_func
__vfork:
#ifdef __NR_vfork
- SAVE_PID
DO_CALL (vfork)
- RESTORE_PID
ldr r1, =0xfffff000
cmp r0, r1
bcs 1f
@@ -69,9 +58,7 @@ __error:
__vfork:
#ifdef __NR_vfork
- SAVE_PID
DO_CALL (vfork)
- RESTORE_PID
cmn r0, #4096
IT(t, cc)
BXC(cc, lr)
diff --git a/libc/sysdeps/linux/common/bits/kernel-features.h b/libc/sysdeps/linux/common/bits/kernel-features.h
index 0b3632063..e0195e405 100644
--- a/libc/sysdeps/linux/common/bits/kernel-features.h
+++ b/libc/sysdeps/linux/common/bits/kernel-features.h
@@ -375,13 +375,6 @@
# define __ASSUME_AT_SECURE 1
#endif
-/* Starting with the 2.5.75 kernel the kernel fills in the correct value
- in the si_pid field passed as part of the siginfo_t struct to signal
- handlers. */
-#if __LINUX_KERNEL_VERSION >= 132427
-# define __ASSUME_CORRECT_SI_PID 1
-#endif
-
/* The utimes syscall has been available for some architectures
forever. For x86 it was introduced after 2.5.75, for x86-64,
ppc, and ppc64 it was introduced in 2.6.0-test3. */
diff --git a/libc/sysdeps/linux/i386/Makefile.arch b/libc/sysdeps/linux/i386/Makefile.arch
index e1739e193..6c9eed897 100644
--- a/libc/sysdeps/linux/i386/Makefile.arch
+++ b/libc/sysdeps/linux/i386/Makefile.arch
@@ -6,11 +6,8 @@
#
CSRC-y := brk.c __syscall_error.c sigaction.c
-
-SSRC-y := \
- __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
- sync_file_range.S syscall.S mmap.S mmap64.S
+SSRC-y := __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
+ sync_file_range.S syscall.S mmap.S mmap64.S vfork.S clone.S
SSRC-$(UCLIBC_HAS_ADVANCED_REALTIME) += posix_fadvise64.S
-SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += vfork.S clone.S
SSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += makecontext.S setcontext.S getcontext.S swapcontext.S
diff --git a/libc/sysdeps/linux/i386/clone.S b/libc/sysdeps/linux/i386/clone.S
index 632cf59df..68e87b567 100644
--- a/libc/sysdeps/linux/i386/clone.S
+++ b/libc/sysdeps/linux/i386/clone.S
@@ -78,10 +78,6 @@ clone:
movl %eax,8(%ecx)
/* Don't leak any information. */
movl $0,4(%ecx)
-#ifndef RESET_PID
- movl $0,(%ecx)
-#endif
-
/* Do the system call */
pushl %ebx
@@ -92,10 +88,6 @@ clone:
movl FLAGS+12(%esp),%ebx
movl CTID+12(%esp),%edi
movl $__NR_clone,%eax
-#ifdef RESET_PID
- /* Remember the flag value. */
- movl %ebx, (%ecx)
-#endif
int $0x80
popl %edi
popl %esi
diff --git a/libc/sysdeps/linux/i386/vfork.S b/libc/sysdeps/linux/i386/vfork.S
index d85726f19..6c4102e0a 100644
--- a/libc/sysdeps/linux/i386/vfork.S
+++ b/libc/sysdeps/linux/i386/vfork.S
@@ -19,18 +19,10 @@
__vfork:
popl %ecx
-#ifdef SAVE_PID
- SAVE_PID
-#endif
-
movl $__NR_vfork,%eax
int $0x80
pushl %ecx
-#ifdef RESTORE_PID
- RESTORE_PID
-#endif
-
cmpl $-4095,%eax
jae __syscall_error
ret
diff --git a/libc/sysdeps/linux/ia64/clone2.S b/libc/sysdeps/linux/ia64/clone2.S
index c077f722a..692ee3600 100644
--- a/libc/sysdeps/linux/ia64/clone2.S
+++ b/libc/sysdeps/linux/ia64/clone2.S
@@ -16,11 +16,8 @@
<http://www.gnu.org/licenses/>. */
#include "sysdep.h"
-
-#include "sysdep.h"
#include <asm/errno.h>
-
/* int __clone2(int (*fn) (void *arg), void *child_stack_base, */
/* size_t child_stack_size, int flags, void *arg, */
/* pid_t *parent_tid, void *tls, pid_t *child_tid) */
@@ -68,22 +65,6 @@ ENTRY(__clone2)
(CHILD) mov loc0=gp
(PARENT) ret
;;
-#ifdef RESET_PID
- tbit.nz p6,p0=in3,16 /* CLONE_THREAD */
- tbit.z p7,p10=in3,8 /* CLONE_VM */
-(p6) br.cond.dptk 1f
- ;;
- mov r15=SYS_ify (getpid)
-(p10) addl r8=-1,r0
-(p7) break __BREAK_SYSCALL
- ;;
- add r9=PID,r13
- add r10=TID,r13
- ;;
- st4 [r9]=r8
- st4 [r10]=r8
- ;;
-#endif
1: ld8 out1=[in0],8 /* Retrieve code pointer. */
mov out0=in4 /* Pass proper argument to fn */
;;
diff --git a/libc/sysdeps/linux/metag/clone.S b/libc/sysdeps/linux/metag/clone.S
index d9d836338..4687cbc0f 100644
--- a/libc/sysdeps/linux/metag/clone.S
+++ b/libc/sysdeps/linux/metag/clone.S
@@ -52,27 +52,6 @@ __clone:
! BRKPNT
! We are the child
-#ifdef RESET_PID
- SETL [A0StP++], D0FrT, D1RtP
- MOVT D0FrT, #HI(CLONE_THREAD)
- ADD D0FrT, D0FrT, #LO(CLONE_THREAD)
- ANDS D0FrT, D0FrT, D1Ar1
- BNZ 3f
- MOVT D0FrT, #HI(CLONE_VM)
- ADD D0FrT, D0FrT, #LO(CLONE_VM)
- ANDS D0FrT, D0FrT, D1Ar1
- BZ 1f
- MOV D1Ar1, #-1
- BA 2f
-1: MOV D1Re0, #__NR_getpid
- SWITCH #0x440001
- MOV D1Ar1, D0Re0
-2: CALLR D1RtP, __CLONE_METAG_LOAD_TP
- SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE
- SETD [D0Re0 + #PID], D1Ar1
- SETD [D0Re0 + #TID], D1Ar1
-3: GETL D0FrT, D1RtP, [--A0StP]
-#endif
! Rearrange the function arg and call address from registers
MOV D0Ar2, D0FrT
MOV D1Ar1, D0Ar6
diff --git a/libc/sysdeps/linux/metag/vfork.S b/libc/sysdeps/linux/metag/vfork.S
index 8573dedd3..5e2fc8808 100644
--- a/libc/sysdeps/linux/metag/vfork.S
+++ b/libc/sysdeps/linux/metag/vfork.S
@@ -8,14 +8,6 @@
#include <bits/errno.h>
#include <sys/syscall.h>
-#ifndef SAVE_PID
-#define SAVE_PID
-#endif
-
-#ifndef RESTORE_PID
-#define RESTORE_PID
-#endif
-
#ifdef __NR_vfork
#define __VFORK_NR __NR_vfork
#else
@@ -33,8 +25,6 @@
.type ___vfork, @function
___vfork:
- SAVE_PID
-
MOV D1Ar1, #0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
MOV D0Ar2, #0
MOV D1Ar3, #0
@@ -44,8 +34,6 @@ ___vfork:
MOV D1Re0, #__NR_clone
SWITCH #0x440001
- RESTORE_PID
-
MOVT D1Re0, #HI(-4096)
ADD D1Re0, D1Re0, #LO(-4096)
CMP D1Re0, D0Re0
diff --git a/libc/sysdeps/linux/mips/Makefile.arch b/libc/sysdeps/linux/mips/Makefile.arch
index 10deedc3e..5e54b07a6 100644
--- a/libc/sysdeps/linux/mips/Makefile.arch
+++ b/libc/sysdeps/linux/mips/Makefile.arch
@@ -9,11 +9,11 @@ CSRC-y := \
__longjmp.c brk.c setjmp_aux.c \
pread_write.c sigaction.c _test_and_set.c
-SSRC-y := bsd-_setjmp.S bsd-setjmp.S setjmp.S syscall.S pipe.S syscall_error.S
+SSRC-y := bsd-_setjmp.S bsd-setjmp.S setjmp.S syscall.S pipe.S syscall_error.S \
+ vfork.S clone.S
CSRC-$(UCLIBC_LINUX_SPECIFIC) += cacheflush.c sysmips.c
CSRC-$(UCLIBC_HAS_ADVANCED_REALTIME) += posix_fadvise.c posix_fadvise64.c
-SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += vfork.S clone.S
SSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += makecontext.S setcontext.S getcontext.S \
swapcontext.S
diff --git a/libc/sysdeps/linux/mips/clone.S b/libc/sysdeps/linux/mips/clone.S
index 1b5a8f472..326d1d34a 100644
--- a/libc/sysdeps/linux/mips/clone.S
+++ b/libc/sysdeps/linux/mips/clone.S
@@ -24,9 +24,6 @@
#include <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
-#ifdef RESET_PID
-#include <tls.h>
-#endif
#define CLONE_VM 0x00000100
#define CLONE_THREAD 0x00010000
@@ -61,9 +58,6 @@ NESTED(clone,4*SZREG,sp)
PTR_SUBU a1,32 /* Reserve argument save space. */
PTR_S a0,0(a1) /* Save function pointer. */
PTR_S a3,PTRSIZE(a1) /* Save argument pointer. */
-#ifdef RESET_PID
- LONG_S a2,(PTRSIZE*2)(a1) /* Save clone flags. */
-#endif
move a0,a2
@@ -122,14 +116,6 @@ L(thread_start):
SAVE_GP (GPOFF)
/* The stackframe has been created on entry of clone(). */
-#ifdef RESET_PID
- /* Check and see if we need to reset the PID. */
- LONG_L a0,(PTRSIZE*2)(sp)
- and a1,a0,CLONE_THREAD
- beqz a1,L(restore_pid)
-L(donepid):
-#endif
-
/* Restore the arg for user's function. */
PTR_L t9,0(sp) /* Function pointer. */
PTR_L a0,PTRSIZE(sp) /* Argument pointer. */
@@ -146,20 +132,6 @@ L(donepid):
jal _exit
#endif
-#ifdef RESET_PID
-L(restore_pid):
- and a1,a0,CLONE_VM
- li v0,-1
- bnez a1,L(gotpid)
- li v0,__NR_getpid
- syscall
-L(gotpid):
- READ_THREAD_POINTER(v1)
- INT_S v0,PID_OFFSET(v1)
- INT_S v0,TID_OFFSET(v1)
- b L(donepid)
-#endif
-
END(__thread_start)
weak_alias(clone, __clone)
diff --git a/libc/sysdeps/linux/mips/vfork.S b/libc/sysdeps/linux/mips/vfork.S
index 494c34fd0..f504c2bb0 100644
--- a/libc/sysdeps/linux/mips/vfork.S
+++ b/libc/sysdeps/linux/mips/vfork.S
@@ -21,14 +21,6 @@
#include <sys/asm.h>
#include <sysdep.h>
-#ifndef SAVE_PID
-#define SAVE_PID
-#endif
-
-#ifndef RESTORE_PID
-#define RESTORE_PID
-#endif
-
#ifdef __NR_fork
/* int vfork() */
@@ -50,8 +42,6 @@ NESTED(__vfork,FRAMESZ,sp)
PTR_ADDU sp, FRAMESZ
- SAVE_PID
-
li a0, 0x4112 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
move a1, sp
@@ -59,8 +49,6 @@ NESTED(__vfork,FRAMESZ,sp)
li v0,__NR_clone
syscall
- RESTORE_PID
-
bnez a3,L(error)
/* Successful return from the parent or child. */
diff --git a/libc/sysdeps/linux/nds32/clone.S b/libc/sysdeps/linux/nds32/clone.S
index 1ed77fb2e..0e6e432de 100644
--- a/libc/sysdeps/linux/nds32/clone.S
+++ b/libc/sysdeps/linux/nds32/clone.S
@@ -28,10 +28,6 @@
#define _ERRNO_H 1
#include <bits/errno.h>
-#ifdef RESET_PID
-#include <tcb-offsets.h>
-#endif
-
#define CLONE_VM 0x00000100
#define CLONE_THREAD 0x00010000
@@ -131,27 +127,7 @@ ENTRY(__clone)
cfi_restore(fp)
#endif /* PIC */
ret
-
-#ifdef RESET_PID
4:
- cfi_undefined(lp)
- movi $r0, CLONE_THREAD ! Skip when CLONE_THREAD is set.
- and $r0, $r5, $r0
- bnez $r0, 8f
- movi $r0, CLONE_VM ! Value = -1 when CLONE_VM is set.
- and $r0, $r5, $r0
- beqz $r0, 6f
- movi $r0, -1
- j 7f
-6:
- __do_syscall(getpid) ! __do_syscall(gettid) ! __do_syscall(getpid)
-7:
- swi $r0, [$r25 + PID_OFFSET]
- swi $r0, [$r25 + TID_OFFSET]
-8:
-#else
-4:
-#endif
/* Only in child's stack. */
pop $r1 ! fn
pop $r0 ! arg
diff --git a/libc/sysdeps/linux/nds32/vfork.S b/libc/sysdeps/linux/nds32/vfork.S
index ac3fa30fd..ab32135fc 100644
--- a/libc/sysdeps/linux/nds32/vfork.S
+++ b/libc/sysdeps/linux/nds32/vfork.S
@@ -25,32 +25,18 @@
#define _ERRNO_H 1
#include <bits/errno.h>
-#ifndef SAVE_PID
-#define SAVE_PID
-#endif
-
-#ifndef RESTORE_PID
-#define RESTORE_PID
-#endif
/* Clone the calling process, but without copying the whole address space.
The calling process is suspended until the new process exits or is
replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
and the process ID of the new process to the old process. */
-
ENTRY (__vfork)
#ifdef PIC
.pic
#endif
#ifdef __NR_vfork
-# ifdef SAVE_PID
- SAVE_PID
-# endif
syscall __NR_vfork
-# ifdef RESTORE_PID
- RESTORE_PID
-# endif
bltz $r0, 2f
1:
ret
diff --git a/libc/sysdeps/linux/nios2/clone.S b/libc/sysdeps/linux/nios2/clone.S
index 0626d8aa2..04f06348c 100644
--- a/libc/sysdeps/linux/nios2/clone.S
+++ b/libc/sysdeps/linux/nios2/clone.S
@@ -24,10 +24,6 @@
#define _ERRNO_H 1
#include <bits/errno.h>
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-#include <tcb-offsets.h>
-#endif
-
#define CLONE_VM 0x00000100
/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
@@ -64,10 +60,6 @@ thread_start:
andi r2, r4, CLONE_VM
bne r2, zero, 2f
DO_CALL (getpid, 0)
-#ifdef RESET_PID
- stw r2, PID_OFFSET(r23)
- stw r2, TID_OFFSET(r23)
-#endif
2:
ldw r5, 4(sp) /* Function pointer. */
ldw r4, 0(sp) /* Argument pointer. */
diff --git a/libc/sysdeps/linux/nios2/vfork.S b/libc/sysdeps/linux/nios2/vfork.S
index 99e4a73e1..2bef2a982 100644
--- a/libc/sysdeps/linux/nios2/vfork.S
+++ b/libc/sysdeps/linux/nios2/vfork.S
@@ -18,21 +18,7 @@
#include <sysdep.h>
-#ifdef __UCLIBC_HAS_THREADS_NATIVE__
-#include <tcb-offsets.h>
-#endif
-
ENTRY(__vfork)
-
-#ifdef RESET_PID
- ldw r6, PID_OFFSET(r23)
- sub r7, zero, r6
- bne r7, zero, 2f
- movhi r7, %hi(0x80000000)
-2:
- stw r7, PID_OFFSET(r23)
-#endif
-
movi r4, 0x4111 /* (CLONE_VM | CLONE_VFORK | SIGCHLD) */
mov r5, zero
@@ -42,9 +28,6 @@ ENTRY(__vfork)
trap
beq r2, zero, 1f
-#ifdef RESET_PID
- stw r6, PID_OFFSET(r23)
-#endif
1:
ret
diff --git a/libc/sysdeps/linux/powerpc/Makefile.arch b/libc/sysdeps/linux/powerpc/Makefile.arch
index f0144e7b9..9dc27c4a5 100644
--- a/libc/sysdeps/linux/powerpc/Makefile.arch
+++ b/libc/sysdeps/linux/powerpc/Makefile.arch
@@ -10,9 +10,7 @@ CSRC-$(if $(UCLIBC_HAS_LONG_DOUBLE_MATH),,y) += copysignl.c
SSRC-y := \
__longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S brk.S \
- __uClibc_syscall.S syscall.S
-
-SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += clone.S vfork.S
+ __uClibc_syscall.S syscall.S clone.S vfork.S
ifeq ($(CONFIG_E500),y)
ARCH_HEADERS := fenv.h
diff --git a/libc/sysdeps/linux/powerpc/clone.S b/libc/sysdeps/linux/powerpc/clone.S
index 8efbbda1a..45319d00d 100644
--- a/libc/sysdeps/linux/powerpc/clone.S
+++ b/libc/sysdeps/linux/powerpc/clone.S
@@ -47,14 +47,10 @@ __clone:
/* Set up stack frame for parent. */
stwu r1,-32(r1)
cfi_adjust_cfa_offset (32)
-#ifdef RESET_PID
- stmw r28,16(r1)
-#else
-# ifndef __ASSUME_FIXED_CLONE_SYSCALL
+#ifndef __ASSUME_FIXED_CLONE_SYSCALL
stmw r29,16(r1)
-# else
+#else
stmw r30,16(r1)
-# endif
#endif
/* Set up stack frame for child. */
@@ -67,9 +63,6 @@ __clone:
#ifndef __ASSUME_FIXED_CLONE_SYSCALL
mr r29,r4 /* Stack pointer in r29. */
#endif
-#ifdef RESET_PID
- mr r28,r5
-#endif
mr r31,r6 /* Argument in r31. */
/* 'flags' argument is first parameter to clone syscall. (The other
@@ -101,17 +94,6 @@ __clone:
mr r1,r29
#endif
-#ifdef RESET_PID
- andis. r0,r28,CLONE_THREAD>>16
- bne+ r0,.Loldpid
- andi. r0,r28,CLONE_VM
- li r3,-1
- bne- r0,.Lnomoregetpid
-.Lnomoregetpid:
- stw r3,TID(r2)
- stw r3,PID(r2)
-.Loldpid:
-#endif
/* Call procedure. */
mtctr r30
mr r3,r31
@@ -121,14 +103,10 @@ __clone:
.Lparent:
/* Parent. Restore registers & return. */
-#ifdef RESET_PID
- lmw r28,16(r1)
-#else
-# ifndef __ASSUME_FIXED_CLONE_SYSCALL
+#ifndef __ASSUME_FIXED_CLONE_SYSCALL
lmw r29,16(r1)
-# else
+#else
lmw r30,16(r1)
-# endif
#endif
addi r1,r1,32
bnslr+
diff --git a/libc/sysdeps/linux/sh/Makefile.arch b/libc/sysdeps/linux/sh/Makefile.arch
index 99a77213b..6103381fd 100644
--- a/libc/sysdeps/linux/sh/Makefile.arch
+++ b/libc/sysdeps/linux/sh/Makefile.arch
@@ -6,10 +6,7 @@
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-CSRC-y := \
- pipe.c __init_brk.c brk.c sbrk.c pread_write.c
-
-SSRC-y := setjmp.S __longjmp.S ___fpscr_values.S
+CSRC-y := pipe.c __init_brk.c brk.c sbrk.c pread_write.c
+SSRC-y := setjmp.S __longjmp.S ___fpscr_values.S clone.S vfork.S
CSRC-$(UCLIBC_LINUX_SPECIFIC) += cacheflush.c
-SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += clone.S vfork.S
diff --git a/libc/sysdeps/linux/sh/clone.S b/libc/sysdeps/linux/sh/clone.S
index 3ed6b25de..334f83f1a 100644
--- a/libc/sysdeps/linux/sh/clone.S
+++ b/libc/sysdeps/linux/sh/clone.S
@@ -23,9 +23,7 @@
#include <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
-#ifdef RESET_PID
-#include <tcb-offsets.h>
-#endif
+
/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
pid_t *ptid, void *tls, pid_t *ctid); */
@@ -85,29 +83,7 @@ ENTRY(__clone)
2:
/* terminate the stack frame */
mov #0, r14
-#ifdef RESET_PID
- mov r4, r0
- shlr16 r0
- tst #1, r0 // CLONE_THREAD = (1 << 16)
- bf/s 4f
- mov r4, r0
- /* new pid */
- shlr8 r0
- tst #1, r0 // CLONE_VM = (1 << 8)
- bf/s 3f
- mov #-1, r0
- mov #+SYS_ify(getpid), r3
- trapa #0x15
-3:
- stc gbr, r1
- mov.w .Lpidoff, r2
- add r1, r2
- mov.l r0, @r2
- mov.w .Ltidoff, r2
- add r1, r2
- mov.l r0, @r2
-4:
-#endif
+
/* thread starts */
mov.l @r15, r1
jsr @r1
@@ -138,12 +114,6 @@ ENTRY(__clone)
.long _GLOBAL_OFFSET_TABLE_
.L3:
.long PLTJMP(C_SYMBOL_NAME(_exit))
-#ifdef RESET_PID
-.Lpidoff:
- .word PID - TLS_PRE_TCB_SIZE
-.Ltidoff:
- .word TID - TLS_PRE_TCB_SIZE
-#endif
-PSEUDO_END (__clone)
+PSEUDO_END (__clone)
weak_alias (__clone, clone)
diff --git a/libc/sysdeps/linux/sparc/Makefile.arch b/libc/sysdeps/linux/sparc/Makefile.arch
index 92ea7d93f..be393b832 100644
--- a/libc/sysdeps/linux/sparc/Makefile.arch
+++ b/libc/sysdeps/linux/sparc/Makefile.arch
@@ -6,12 +6,8 @@
#
CSRC-y := brk.c __syscall_error.c sigaction.c
-
-SSRC-y := \
- __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
- syscall.S urem.S udiv.S umul.S sdiv.S rem.S pipe.S
-
-SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += fork.S vfork.S clone.S
+SSRC-y := __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
+ syscall.S urem.S udiv.S umul.S sdiv.S rem.S pipe.S fork.S vfork.S clone.S
CSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += makecontext.c
SSRC-$(UCLIBC_HAS_CONTEXT_FUNCS) += getcontext.S setcontext.S swapcontext.S
diff --git a/libc/sysdeps/linux/sparc/clone.S b/libc/sysdeps/linux/sparc/clone.S
index 1d0e3e6e1..3ee88da78 100644
--- a/libc/sysdeps/linux/sparc/clone.S
+++ b/libc/sysdeps/linux/sparc/clone.S
@@ -22,9 +22,6 @@
#include <asm/errno.h>
#include <asm/unistd.h>
-#ifdef RESET_PID
-#include <tcb-offsets.h>
-#endif
#include <sysdep.h>
#define CLONE_VM 0x00000100
@@ -83,20 +80,6 @@ END(__clone)
.type __thread_start,@function
__thread_start:
-#ifdef RESET_PID
- sethi %hi(CLONE_THREAD), %l0
- andcc %g4, %l0, %g0
- bne 1f
- andcc %g4, CLONE_VM, %g0
- bne,a 2f
- mov -1,%o0
- set __NR_getpid,%g1
- ta 0x10
-2:
- st %o0,[%g7 + PID]
- st %o0,[%g7 + TID]
-1:
-#endif
mov %g0, %fp /* terminate backtrace */
call %g2
mov %g3,%o0
diff --git a/libc/sysdeps/linux/sparc/vfork.S b/libc/sysdeps/linux/sparc/vfork.S
index e5a3c303d..5b05e6476 100644
--- a/libc/sysdeps/linux/sparc/vfork.S
+++ b/libc/sysdeps/linux/sparc/vfork.S
@@ -16,8 +16,6 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-/* Code taken from glibc2.2.2/sysdeps/unix/sysv/linux/sparc/vfork.S */
-
#include <sys/syscall.h>
#ifndef __NR_vfork
diff --git a/libc/sysdeps/linux/x86_64/Makefile.arch b/libc/sysdeps/linux/x86_64/Makefile.arch
index 2bc838f0e..d84e43daa 100644
--- a/libc/sysdeps/linux/x86_64/Makefile.arch
+++ b/libc/sysdeps/linux/x86_64/Makefile.arch
@@ -6,11 +6,9 @@
#
CSRC-y := brk.c __syscall_error.c sigaction.c
+SSRC-y := __longjmp.S setjmp.S syscall.S bsd-setjmp.S bsd-_setjmp.S \
+ vfork.S clone.S
-SSRC-y := \
- __longjmp.S setjmp.S syscall.S bsd-setjmp.S bsd-_setjmp.S
-
-SSRC-$(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 $-4095, %eax
jae __syscall_error /* Branch forward if it failed. */
diff --git a/libc/sysdeps/linux/xtensa/Makefile.arch b/libc/sysdeps/linux/xtensa/Makefile.arch
index b9b6b87d5..23cd08ee5 100644
--- a/libc/sysdeps/linux/xtensa/Makefile.arch
+++ b/libc/sysdeps/linux/xtensa/Makefile.arch
@@ -6,9 +6,7 @@
#
CSRC-y := brk.c sigaction.c __syscall_error.c
-
SSRC-y := bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S \
- sigrestorer.S syscall.S mmap.S windowspill.S __longjmp.S vfork.S
+ sigrestorer.S syscall.S mmap.S windowspill.S __longjmp.S vfork.S
CSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += fork.c
-SSRC-$(if $(UCLIBC_HAS_THREADS_NATIVE),,y) += clone.S
diff --git a/libc/sysdeps/linux/xtensa/clone.S b/libc/sysdeps/linux/xtensa/clone.S
index efdfcdd5e..913ec5a5f 100644
--- a/libc/sysdeps/linux/xtensa/clone.S
+++ b/libc/sysdeps/linux/xtensa/clone.S
@@ -21,9 +21,6 @@
#include <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
-#ifdef RESET_PID
-#include <tls.h>
-#endif
#define __ASSEMBLY__
#include <linux/sched.h>
@@ -76,21 +73,6 @@ ENTRY (__clone)
# error invalid values for CLONE_THREAD or CLONE_VM
#endif
-#ifdef RESET_PID
- bbsi.l a6, 16, .Lskip_restore_pid /* CLONE_THREAD = 0x00010000 */
- movi a2, -1
- bbsi a6, 8, .Lgotpid /* CLONE_VM = 0x00000100 */
- movi a2, SYS_ify(getpid)
- syscall
-.Lgotpid:
- rur a3, threadptr
- movi a0, TLS_PRE_TCB_SIZE
- sub a3, a3, a0
- s32i a2, a3, PID
- s32i a2, a3, TID
-.Lskip_restore_pid:
-#endif
-
/* start child thread */
movi a0, 0 /* terminate the stack frame */
@@ -115,5 +97,4 @@ ENTRY (__clone)
#endif
PSEUDO_END (__clone)
-
weak_alias (__clone, clone)
diff --git a/libc/sysdeps/linux/xtensa/vfork.S b/libc/sysdeps/linux/xtensa/vfork.S
index 8058fb057..140ab775e 100644
--- a/libc/sysdeps/linux/xtensa/vfork.S
+++ b/libc/sysdeps/linux/xtensa/vfork.S
@@ -34,16 +34,6 @@
*/
-#ifndef SAVE_PID
-#define SAVE_PID(a,b,c,d)
-#endif
-#ifndef RESTORE_PID
-#define RESTORE_PID(a,b,c)
-#endif
-#ifndef RESTORE_PID12
-#define RESTORE_PID12(a,b,c)
-#endif
-
/*
pid_t vfork(void);
Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0)
@@ -73,8 +63,6 @@ HIDDEN_ENTRY (__vfork)
.L4: mov a12, a2
mov a13, a3
- SAVE_PID(a5,a15,a2,a3)
-
/* use syscall 'clone' and set new stack pointer to the same address */
movi a2, SYS_ify(clone)
@@ -83,8 +71,6 @@ HIDDEN_ENTRY (__vfork)
syscall
- RESTORE_PID(a5,a15,a2)
-
movi a5, -4096
mov a6, a2
@@ -102,16 +88,12 @@ HIDDEN_ENTRY (__vfork)
mov a13, a3
mov a14, a6
- SAVE_PID(a9,a15,a2,a3)
-
movi a2, SYS_ify(clone)
movi a3, 0
movi a6, CLONE_VM | CLONE_VFORK | SIGCHLD
syscall
- RESTORE_PID(a9,a15,a2)
-
movi a9, -4096
mov a10, a2
@@ -131,16 +113,12 @@ HIDDEN_ENTRY (__vfork)
mov a13, a3
mov a14, a6
- SAVE_PID (a2,a3,a2,a6)
-
movi a2, SYS_ify(clone)
movi a3, 0
movi a6, CLONE_VM | CLONE_VFORK | SIGCHLD
syscall
- RESTORE_PID12(a3,a6,a15)
-
mov a3, a13
movi a13, -4096
@@ -168,7 +146,6 @@ HIDDEN_ENTRY (__vfork)
.Lpseudo_end:
retw
#elif defined(__XTENSA_CALL0_ABI__)
- SAVE_PID(a5, a8, a3, a4)
/* Use syscall 'clone'. Set new stack pointer to the same address. */
movi a2, SYS_ify (clone)
@@ -176,8 +153,6 @@ HIDDEN_ENTRY (__vfork)
movi a6, CLONE_VM | CLONE_VFORK | SIGCHLD
syscall
- RESTORE_PID(a5, a8, a2)
-
movi a3, -4096
bgeu a2, a3, 1f
ret