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GNU C Library master sources branch master updated. glibc-2.19-517-gd936d37

From: roland at sourceware dot org
To: glibc-cvs at sourceware dot org
Date: 2 Jun 2014 21:29:54 -0000
Subject: GNU C Library master sources branch master updated. glibc-2.19-517-gd936d37
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The branch, master has been updated
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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=d936d379eb1837c35e390b6293f15f75b634db6e

commit d936d379eb1837c35e390b6293f15f75b634db6e
Author: Roland McGrath <roland@hack.frob.com>
Date:   Mon Jun 2 14:29:19 2014 -0700

    SH: Consolidate NPTL/non versions of vfork

diff --git a/ChangeLog b/ChangeLog
index 75cd049..ad31181 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2014-06-02  Roland McGrath  <roland@hack.frob.com>
+
+	* nptl/sysdeps/unix/sysv/linux/sh/vfork.S: Moved ...
+	* sysdeps/unix/sysv/linux/sh/vfork.S: ... here.
+	Label the code __libc_vfork rather than __vfork.
+	[!NOT_IN_libc] (vfork): Define as weak alias.
+	[!NOT_IN_libc] (__vfork): Define as strong alias, and libc_hidden_def.
+	* sysdeps/unix/sysv/linux/sh/pt-vfork.S: New file.
+	* nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S: File removed.
+
 2014-06-02  Siddhesh Poyarekar  <siddhesh@redhat.com>
 
 	* malloc/malloc.c (malloc_info): Fix format specifier for
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S b/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S
deleted file mode 100644
index 1febd1f..0000000
--- a/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S
+++ /dev/null
@@ -1,65 +0,0 @@
-/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#define _ERRNO_H	1
-#include <bits/errno.h>
-#include <tcb-offsets.h>
-
-/* 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)
-	/* Save the PID value.  */
-	stc	gbr, r2
-	mov.w	.L2, r0
-	mov.l	@(r0,r2), r4
-	neg	r4, r1
-	mov.l	r1, @(r0,r2)
-
-	mov.w	.L1, r3
-	trapa	#0x10
-	mov     r0, r1
-
-	/* Restore the old PID value in the parent.  */
-	tst	r0, r0
-	bt/s	2f
-	 stc	gbr, r2
-	mov.w	.L2, r0
-	mov.l	r4, @(r0,r2)
-	mov	r1, r0
-2:
-	mov	#-12, r2
-	shad	r2, r1
-	not	r1, r1			// r1=0 means r0 = -1 to -4095
-	tst	r1, r1			// i.e. error in linux
-	bf	.Lpseudo_end
-	SYSCALL_ERROR_HANDLER
-.Lpseudo_end:
-	rts
-	 nop
-.L1:
-	.word	__NR_vfork
-.L2:
-	.word	PID - TLS_PRE_TCB_SIZE
-
-PSEUDO_END (__vfork)
-libc_hidden_def (__vfork)
-
-weak_alias (__vfork, vfork)
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/vfork.S b/nptl/sysdeps/unix/sysv/linux/sh/vfork.S
deleted file mode 100644
index 2676858..0000000
--- a/nptl/sysdeps/unix/sysv/linux/sh/vfork.S
+++ /dev/null
@@ -1,70 +0,0 @@
-/* Copyright (C) 2004-2014 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#define _ERRNO_H	1
-#include <bits/errno.h>
-#include <tcb-offsets.h>
-
-/* 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)
-	/* Save the PID value.  */
-	stc	gbr, r2
-	mov.w	.L2, r0
-	mov.l	@(r0,r2), r4
-	neg	r4, r1
-	tst	r1, r1
-	bf	1f
-	mov	#1, r1
-	rotr	r1
-1:
-	mov.l	r1, @(r0,r2)
-
-	mov.w	.L1, r3
-	trapa	#0x10
-	mov     r0, r1
-
-	/* Restore the old PID value in the parent.  */
-	tst	r0, r0
-	bt.s	2f
-	 stc	gbr, r2
-	mov.w	.L2, r0
-	mov.l	r4, @(r0,r2)
-	mov	r1, r0
-2:
-	mov	#-12, r2
-	shad	r2, r1
-	not	r1, r1			// r1=0 means r0 = -1 to -4095
-	tst	r1, r1			// i.e. error in linux
-	bf	.Lpseudo_end
-	SYSCALL_ERROR_HANDLER
-.Lpseudo_end:
-	rts
-	 nop
-.L1:
-	.word	__NR_vfork
-.L2:
-	.word	PID - TLS_PRE_TCB_SIZE
-	.align	2
-PSEUDO_END (__vfork)
-libc_hidden_def (__vfork)
-
-weak_alias (__vfork, vfork)
diff --git a/sysdeps/unix/sysv/linux/sh/pt-vfork.S b/sysdeps/unix/sysv/linux/sh/pt-vfork.S
new file mode 100644
index 0000000..65cc382
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sh/pt-vfork.S
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/alpha/pt-vfork.S>
diff --git a/sysdeps/unix/sysv/linux/sh/vfork.S b/sysdeps/unix/sysv/linux/sh/vfork.S
index 436e4fb..76326f5 100644
--- a/sysdeps/unix/sysv/linux/sh/vfork.S
+++ b/sysdeps/unix/sysv/linux/sh/vfork.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999-2014 Free Software Foundation, Inc.
+/* Copyright (C) 2004-2014 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -18,53 +18,56 @@
 #include <sysdep.h>
 #define _ERRNO_H	1
 #include <bits/errno.h>
+#include <tcb-offsets.h>
 
 /* 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 __NR_vfork
-	mov.w	.L3, r3
-	trapa	#0x10
-	mov     r0, r1
-	mov	#-12, r2
-	shad	r2, r1
-	not	r1, r1			// r1=0 means r0 = -1 to -4095
-	tst	r1, r1			// i.e. error in linux
+ENTRY (__libc_vfork)
+	/* Save the PID value.  */
+	stc	gbr, r2
+	mov.w	.L2, r0
+	mov.l	@(r0,r2), r4
+	neg	r4, r1
+	tst	r1, r1
 	bf	1f
-	mov.w	.L1, r1
-	cmp/eq	r1, r0
-	bt	2f
-	bra	.Lsyscall_error
-	 nop
-.L1:
-	.word	-ENOSYS
-.L3:	.word	__NR_vfork
+	mov	#1, r1
+	rotr	r1
 1:
-	rts
-	 nop
-2:
-#endif
+	mov.l	r1, @(r0,r2)
 
-	/* If we don't have vfork, fork is close enough.  */
-	mov	#+__NR_fork, r3
+	mov.w	.L1, r3
 	trapa	#0x10
 	mov     r0, r1
+
+	/* Restore the old PID value in the parent.  */
+	tst	r0, r0
+	bt.s	2f
+	 stc	gbr, r2
+	mov.w	.L2, r0
+	mov.l	r4, @(r0,r2)
+	mov	r1, r0
+2:
 	mov	#-12, r2
 	shad	r2, r1
 	not	r1, r1			// r1=0 means r0 = -1 to -4095
 	tst	r1, r1			// i.e. error in linux
 	bf	.Lpseudo_end
-.Lsyscall_error:
 	SYSCALL_ERROR_HANDLER
 .Lpseudo_end:
 	rts
 	 nop
+.L1:
+	.word	__NR_vfork
+.L2:
+	.word	PID - TLS_PRE_TCB_SIZE
+	.align	2
+PSEUDO_END (__libc_vfork)
 
-PSEUDO_END (__vfork)
+#if !NOT_IN_libc
+weak_alias (__libc_vfork, vfork)
+strong_alias (__libc_vfork, __vfork)
 libc_hidden_def (__vfork)
-
-weak_alias (__vfork, vfork)
+#endif

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                  |   10 ++++
 nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S |   65 --------------------------
 nptl/sysdeps/unix/sysv/linux/sh/vfork.S    |   70 ----------------------------
 sysdeps/unix/sysv/linux/sh/pt-vfork.S      |    1 +
 sysdeps/unix/sysv/linux/sh/vfork.S         |   61 +++++++++++++-----------
 5 files changed, 43 insertions(+), 164 deletions(-)
 delete mode 100644 nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S
 delete mode 100644 nptl/sysdeps/unix/sysv/linux/sh/vfork.S
 create mode 100644 sysdeps/unix/sysv/linux/sh/pt-vfork.S


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