libpthread/nptl: core of the "Native Posix Threading Library" for uClibc

targetting arm,sh,i386,mips,sparc for now

Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

4 files changed, 241 insertions, 0 deletions

diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
new file mode 100644
index 000000000..e19579e84
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
@@ -0,0 +1,3 @@
+#define RESET_PID
+#include <tcb-offsets.h>
+#include <sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/pt-vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/pt-vfork.S
new file mode 100644
index 000000000..61651fd97
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/pt-vfork.S
@@ -0,0 +1,49 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <bits/kernel-features.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)
+	lwz	0,PID(2)
+	neg	0,0
+	stw	0,PID(2)
+
+	DO_CALL (SYS_ify (vfork))
+
+	cmpwi	1,3,0
+	beqlr-	1
+
+	lwz	0,PID(2)
+	neg	0,0
+	stw	0,PID(2)
+
+	PSEUDO_RET
+
+PSEUDO_END (__vfork)
+
+weak_alias (__vfork, vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
new file mode 100644
index 000000000..84acf3843
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -0,0 +1,132 @@
+/* Cancellable system call stubs.  Linux/PowerPC version.
+   Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>, 2003.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args)				\
+  .section ".text";							\
+  ENTRY (name)								\
+    cfi_startproc;							\
+    SINGLE_THREAD_P;							\
+    bne- .Lpseudo_cancel;						\
+  .type __##syscall_name##_nocancel,@function;				\
+  .globl __##syscall_name##_nocancel;					\
+  __##syscall_name##_nocancel:						\
+    DO_CALL (SYS_ify (syscall_name));					\
+    PSEUDO_RET;								\
+  .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	\
+  .Lpseudo_cancel:							\
+    stwu 1,-48(1);							\
+    cfi_adjust_cfa_offset (48);						\
+    mflr 9;								\
+    stw 9,52(1);							\
+    cfi_offset (lr, 4);							\
+    CGOTSETUP;								\
+    DOCARGS_##args;	/* save syscall args around CENABLE.  */	\
+    CENABLE;								\
+    stw 3,16(1);	/* store CENABLE return value (MASK).  */	\
+    UNDOCARGS_##args;	/* restore syscall args.  */			\
+    DO_CALL (SYS_ify (syscall_name));					\
+    mfcr 0;		/* save CR/R3 around CDISABLE.  */		\
+    stw 3,8(1);								\
+    stw 0,12(1);							\
+    lwz 3,16(1);	/* pass MASK to CDISABLE.  */			\
+    CDISABLE;								\
+    lwz 4,52(1);							\
+    lwz 0,12(1);	/* restore CR/R3. */				\
+    lwz 3,8(1);								\
+    CGOTRESTORE;							\
+    mtlr 4;								\
+    mtcr 0;								\
+    addi 1,1,48;							\
+    cfi_endproc;
+
+# define DOCARGS_0
+# define UNDOCARGS_0
+
+# define DOCARGS_1	stw 3,20(1); DOCARGS_0
+# define UNDOCARGS_1	lwz 3,20(1); UNDOCARGS_0
+
+# define DOCARGS_2	stw 4,24(1); DOCARGS_1
+# define UNDOCARGS_2	lwz 4,24(1); UNDOCARGS_1
+
+# define DOCARGS_3	stw 5,28(1); DOCARGS_2
+# define UNDOCARGS_3	lwz 5,28(1); UNDOCARGS_2
+
+# define DOCARGS_4	stw 6,32(1); DOCARGS_3
+# define UNDOCARGS_4	lwz 6,32(1); UNDOCARGS_3
+
+# define DOCARGS_5	stw 7,36(1); DOCARGS_4
+# define UNDOCARGS_5	lwz 7,36(1); UNDOCARGS_4
+
+# define DOCARGS_6	stw 8,40(1); DOCARGS_5
+# define UNDOCARGS_6	lwz 8,40(1); UNDOCARGS_5
+
+# define CGOTSETUP
+# define CGOTRESTORE
+
+# ifdef IS_IN_libpthread
+#  define CENABLE	bl __pthread_enable_asynccancel@local
+#  define CDISABLE	bl __pthread_disable_asynccancel@local
+# elif !defined NOT_IN_libc
+#  define CENABLE	bl __libc_enable_asynccancel@local
+#  define CDISABLE	bl __libc_disable_asynccancel@local
+# elif defined IS_IN_librt
+#  define CENABLE	bl JUMPTARGET(__librt_enable_asynccancel)
+#  define CDISABLE	bl JUMPTARGET(__librt_disable_asynccancel)
+#  if defined HAVE_AS_REL16 && defined PIC
+#   undef CGOTSETUP
+#   define CGOTSETUP							\
+    bcl 20,31,1f;							\
+ 1: stw 30,44(1);							\
+    mflr 30;								\
+    addis 30,30,_GLOBAL_OFFSET_TABLE-1b@ha;				\
+    addi 30,30,_GLOBAL_OFFSET_TABLE-1b@l
+#   undef CGOTRESTORE
+#   define CGOTRESTORE							\
+    lwz 30,44(1)
+#  endif
+# else
+#  error Unsupported library
+# endif
+
+# ifndef __ASSEMBLER__
+#  define SINGLE_THREAD_P						\
+  __builtin_expect (THREAD_GETMEM (THREAD_SELF,				\
+				   header.multiple_threads) == 0, 1)
+# else
+#  define SINGLE_THREAD_P						\
+  lwz 10,MULTIPLE_THREADS_OFFSET(2);					\
+  cmpwi 10,0
+# endif
+
+#elif !defined __ASSEMBLER__
+
+# define SINGLE_THREAD_P (1)
+# define NO_CANCELLATION 1
+
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
new file mode 100644
index 000000000..b7e2cf6e7
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
@@ -0,0 +1,57 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <bits/kernel-features.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)
+	lwz	0,PID(2)
+	cmpwi	0,0,0
+	neg	0,0
+	bne-	0,1f
+	lis	0,0x8000
+1:	stw	0,PID(2)
+
+	DO_CALL (SYS_ify (vfork))
+
+	cmpwi	1,3,0
+	beqlr-	1
+
+	lwz	0,PID(2)
+	/* Cannot use clrlwi. here, because cr0 needs to be preserved
+	   until PSEUDO_RET.  */
+	clrlwi	4,0,1
+	cmpwi	1,4,0
+	beq-	1,1f
+	neg	4,0
+1:	stw	4,PID(2)
+
+	PSEUDO_RET
+
+PSEUDO_END (__vfork)
+hidden_def (__vfork)
+weak_alias (__vfork, vfork)