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>

1 files changed, 0 insertions, 59 deletions

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/vfork.S
deleted file mode 100644
index 46eb76dd6..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/vfork.S
+++ /dev/null
@@ -1,59 +0,0 @@
-/* Copyright (C) 2013 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 <tls.h>
-
-/*
-  Save the PID value, save 0x80000000 if PID was 0.
-  Registers a2 and a3 are available; ar should return the PID and as threadptr
- */
-
-#define SAVE_PID(pid,tp,ar,as)						\
-	rur	tp, threadptr;						\
-	movi	ar, TLS_PRE_TCB_SIZE;					\
-	sub	tp, tp, ar;						\
-	l32i	pid, tp, PID;						\
-	neg	ar, pid;						\
-	movi	as, 0x80000000;						\
-	moveqz	ar, as, ar;						\
-	s32i	ar, tp, PID;						\
-
-/*
-  Restore the PID value, restore to 0 if saved value was 0x80000000
-  Return value from the syscall is in a2.
- */
-#define RESTORE_PID(pid,tp,res)						\
-	beqz	res, 1f;						\
-	s32i	pid, tp, PID;						\
-1:
-
-/*
-  Special version for call12, where we don't have enough registers
-  available to preserve the original PID.
- */
-#define RESTORE_PID12(ar, as, at)					\
-	rur	as, threadptr;						\
-	movi	ar, TLS_PRE_TCB_SIZE;					\
-	sub	as, as, ar;						\
-	l32i	ar, as, PID;						\
-	movi	at, 0x80000000;						\
-	sub	at, at, ar;						\
-	neg	ar, ar;							\
-	moveqz	ar, at, at;						\
-	s32i	ar, as, PID;
-
-#include <libc/sysdeps/linux/xtensa/vfork.S>