Update.

2003-02-07  Jakub Jelinek  <jakub@redhat.com>

	* tst-popen2.c: New test.
	* Makefile (tests): Add tst-popen2.
	* sysdeps/unix/sysv/linux/alpha/vfork.S (__vfork): Branch to __fork
	whenever libpthread.so is loaded.
	* sysdeps/unix/sysv/linux/i386/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/ia64/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S (__vfork): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/vfork.S (__vfork): Likewise.

8 files changed, 90 insertions, 13 deletions

diff --git a/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S
index e7507245e7..9002a3b36b 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S
@@ -27,10 +27,12 @@ __LABEL(__vfork)
 	.prologue 1
 	PSEUDO_PROF
 
-	SINGLE_THREAD_P(t0)
 #ifdef SHARED
+	ldq	t0, __libc_pthread_functions(gp) !gprel
 	bne	t0, HIDDEN_JUMPTARGET (__fork) !samegp
 #else
+	.weak	__pthread_fork
+	ldq	t0, __pthread_fork(gp) !literal
 	bne	t0, $do_fork
 #endif
 
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S
index 298aedcf43..f4a56a54bf 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S
@@ -31,7 +31,19 @@ ENTRY (__vfork)
 
 #ifdef __NR_vfork
 
-	SINGLE_THREAD_P
+# ifdef SHARED
+#  if !defined HAVE_HIDDEN || !USE___THREAD
+	SETUP_PIC_REG (cx)
+#  else
+	call	__i686.get_pc_thunk.cx
+#  endif
+	addl	$_GLOBAL_OFFSET_TABLE_, %ecx
+	cmpl	$0, __libc_pthread_functions@GOTOFF(%ecx)
+# else
+	.weak	__pthread_fork
+	movl	$__pthread_fork, %eax
+	testl	%eax, %eax
+# endif
 	jne	HIDDEN_JUMPTARGET (__fork)
 
 	/* Pop the return PC value into ECX.  */
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S
index 172ac2b040..5541edb53c 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S
@@ -30,7 +30,14 @@
 /* Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0)	*/
 
 ENTRY(__vfork)
-	SINGLE_THREAD_P
+#ifdef SHARED
+	addl r14 = @gprel(__libc_pthread_functions#), gp;;
+#else
+	.weak	__pthread_fork
+	addl r14 = @ltoff(@fptr(__pthread_fork#)), gp;;
+#endif
+	ld8 r14 = [r14];;
+	cmp.ne p6, p7 = 0, r14
 (p6)	br.cond.spnt.few HIDDEN_JUMPTARGET (__fork);;
 	alloc r2=ar.pfs,0,0,2,0
 	mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
index 17590059b6..e85f662b7e 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
@@ -29,11 +29,20 @@
 ENTRY (__vfork)
 
 #ifdef __NR_vfork
-
-	SINGLE_THREAD_P
 # ifdef SHARED
+	mflr	9
+	bl	_GLOBAL_OFFSET_TABLE_@local-4
+	mflr	10
+	mtlr	9
+	lwz	10,__libc_pthread_functions@got(10)
+	lwz	10,0(10)
+	cmpwi	10,0
 	bne-	HIDDEN_JUMPTARGET(__fork)
 # else
+	.weak	__pthread_fork
+	lis	9,__pthread_fork@ha
+	la	9,__pthread_fork@l(9)
+	cmpwi	9,0
 	bne-	.Lhidden_fork
 # endif
 
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
index efc9710d7b..d2faaa1c68 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
@@ -27,7 +27,14 @@
    and the process ID of the new process to the old process.  */
 
 ENTRY (__vfork)
-	SINGLE_THREAD_P
+#ifdef SHARED
+	larl	%r1,__libc_pthread_functions
+	lg	%r1,0(%r1)
+#else
+	.weak	__pthread_fork
+	larl	%r1,__pthread_fork
+#endif
+	ltgr	%r1,%r1
 	jgne	HIDDEN_JUMPTARGET(__fork)
 
 	/* Do vfork system call.  */
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
index 5e98554744..2da7703e31 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
@@ -20,9 +20,28 @@
 #include <sysdep-cancel.h>
 
 	.text
+#ifdef SHARED
+.LLGETPC0:
+	retl
+	 addl	%o7, %o0, %o0
+#endif
 ENTRY(__vfork)
-	ld	[%g7 + MULTIPLE_THREADS_OFFSET], %o0
-	cmp	%o0, 0
+#ifdef SHARED
+	mov	%o7, %o1
+	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %o0
+	call	.LLGETPC0
+	 add	%o0, %lo(_GLOBAL_OFFSET_TABLE_+4), %o0
+	sethi	%hi(__libc_pthread_functions), %o2
+	mov	%o1, %o7
+	or	%o2, %lo(__libc_pthread_functions), %o2
+	ld	[%o0 + %o2], %o2
+	ld	[%o2], %o2
+	cmp	%o2, 0
+#else
+	.weak	__pthread_fork
+	sethi	%hi(__pthread_fork), %o0
+	orcc	%o0, %lo(__pthread_fork), %o0
+#endif
 #if defined SHARED && !defined BROKEN_SPARC_WDISP22
 	bne	HIDDEN_JUMPTARGET(__fork)
 #else
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
index 98ad45795a..8b85d763d4 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
@@ -19,13 +19,28 @@
 
 #include <sysdep-cancel.h>
 
-	.text
+#ifdef SHARED
+.LLGETPC0:
+	retl
+	 addl	%o7, %o0, %o0
+#endif
 ENTRY(__vfork)
-	ld	[%g7 + MULTIPLE_THREADS_OFFSET], %o0
 #ifdef SHARED
-	cmp	%o0, 0
-	bne	HIDDEN_JUMPTARGET (__fork)
+	mov	%o7, %o1
+	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %o0
+	call	.LLGETPC0
+	 add	%o0, %lo(_GLOBAL_OFFSET_TABLE_+4), %o0
+	sethi	%hi(__libc_pthread_functions), %o2
+	mov	%o1, %o7
+	or	%o2, %lo(__libc_pthread_functions), %o2
+	ldx	[%o0 + %o2], %o2
+	ldx	[%o2], %o2
+	cmp	%o2, 0
+	bne	HIDDEN_JUMPTARGET(__fork)
 #else
+	.weak	__pthread_fork
+	sethi	%hi(__pthread_fork), %o0
+	or	%o0, %lo(__pthread_fork), %o0
 	brnz,pn	%o0, 1f
 #endif
 	 mov	__NR_vfork, %g1
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S
index 3e867a6211..28989eaa14 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S
+++ b/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S
@@ -27,7 +27,13 @@
 
 ENTRY (__vfork)
 
-	SINGLE_THREAD_P
+#ifdef SHARED
+	cmpq	$0, __libc_pthread_functions(%rip)
+#else
+	.weak	__pthread_fork
+	movq	$__pthread_fork, %eax
+	testq	%rax, %rax
+#endif
 	jne	HIDDEN_JUMPTARGET (__fork)
 
 	/* Pop the return PC value into RDI.  We need a register that