[git commit] Get sparc64 nptl compiling

Austin Foxley austinf at cetoncorp.com
Thu May 21 22:25:35 UTC 2009


commit: http://git.uclibc.org/uClibc/commit/?id=9a2837c77c664d32a1fc9860cb193f25e0f3f37e
branch: http://git.uclibc.org/uClibc/commit/?id=refs/heads/nptl


Signed-off-by: Austin Foxley <austinf at cetoncorp.com>
---
 libc/sysdeps/linux/sparc/sparcv9/clone.S           |  102 ++++++++++++++++++++
 .../nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h     |    6 +-
 .../sysdeps/unix/sysv/linux/sparc/sparc64/clone.S  |    2 +-
 .../unix/sysv/linux/sparc/sparc64/pt-vfork.S       |   13 ++-
 .../unix/sysv/linux/sparc/sparc64/sysdep-cancel.h  |   93 +++++++++---------
 .../sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S  |   15 ++-
 6 files changed, 171 insertions(+), 60 deletions(-)
 create mode 100644 libc/sysdeps/linux/sparc/sparcv9/clone.S

diff --git a/libc/sysdeps/linux/sparc/sparcv9/clone.S b/libc/sysdeps/linux/sparc/sparcv9/clone.S
new file mode 100644
index 0000000..9d101e2
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sparcv9/clone.S
@@ -0,0 +1,102 @@
+/* Copyright (C) 1997, 2000, 2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson (rth at tamu.edu).
+
+   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.  */
+
+/* clone() is even more special than fork() as it mucks with stacks
+   and invokes a function in the right context after its all over.  */
+
+#include <asm/errno.h>
+#include <asm/unistd.h>
+#include <tcb-offsets.h>
+#include <sysdep.h>
+
+#define CLONE_VM	0x00000100
+#define CLONE_THREAD	0x00010000
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
+	     pid_t *ptid, void *tls, pid_t *ctid); */
+
+	.register	%g2,#scratch
+	.register	%g3,#scratch
+
+	.text
+
+ENTRY (__clone)
+	save	%sp, -192, %sp
+	cfi_def_cfa_register(%fp)
+	cfi_window_save
+	cfi_register(%o7, %i7)
+
+	/* sanity check arguments */
+	brz,pn	%i0, 99f		/* fn non-NULL? */
+	 mov	%i0, %g2
+	brz,pn	%i1, 99f		/* child_stack non-NULL? */
+	 mov	%i2, %o0		/* clone flags */
+
+	/* The child_stack is the top of the stack, allocate one
+	   whole stack frame from that as this is what the kernel
+	   expects.  Also, subtract STACK_BIAS.  */
+	sub	%i1, 192 + 0x7ff, %o1
+	mov	%i3, %g3
+	mov	%i2, %g4
+
+	mov	%i4,%o2			/* PTID */
+	mov	%i5,%o3			/* TLS */
+	ldx	[%fp+0x7ff+176],%o4	/* CTID */
+
+	/* Do the system call */
+	set	__NR_clone, %g1
+	ta	0x6d
+	bcs,pn	%xcc, 98f
+	 nop
+	brnz,pn	%o1, __thread_start
+	 nop
+	jmpl	%i7 + 8, %g0
+	 restore %o0, %g0, %o0
+99:	mov	EINVAL, %o0
+98:	call	HIDDEN_JUMPTARGET(__errno_location)
+	 mov	%o0, %i0
+	st	%i0, [%o0]
+	jmpl	%i7 + 8, %g0
+	 restore %g0,-1,%o0
+END(__clone)
+
+	.type __thread_start, at function
+__thread_start:
+#ifdef RESET_PID
+	sethi	%hi(CLONE_THREAD), %l0
+	andcc	%g4, %l0, %g0
+	bne,pt	%icc, 1f
+	 andcc	%g4, CLONE_VM, %g0
+	bne,a,pn %icc, 2f
+	 mov	-1,%o0
+	set	__NR_getpid,%g1
+	ta	0x6d
+2:	st	%o0,[%g7 + PID]
+	st	%o0,[%g7 + TID]
+1:
+#endif
+	mov	%g0, %fp	/* terminate backtrace */
+	call	%g2
+	 mov	%g3,%o0
+	call	HIDDEN_JUMPTARGET(_exit),0
+	 nop
+
+	.size	__thread_start, .-__thread_start
+
+weak_alias (__clone, clone)
diff --git a/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h b/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h
index 77321aa..5cef8b1 100644
--- a/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h
+++ b/libpthread/nptl/sysdeps/sparc/sparc64/jmpbuf-unwind.h
@@ -1,6 +1,6 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by David S. Miller <davem at davemloft.net>, 2005.
+   Contributed by Jakub Jelinek <jakub at redhat.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
@@ -25,7 +25,7 @@
   _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
 
 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
-  ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[0].uc_mcontext.mc_fp - (_adj))
+  ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_SP] - (_adj))
 
 /* We use the normal lobngjmp for unwinding.  */
 #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
index 410f320..64e3bfc 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
@@ -1,2 +1,2 @@
 #define RESET_PID
-#include <sysdeps/unix/sysv/linux/sparc/sparc64/clone.S>
+#include <libc/sysdeps/linux/sparc/sparcv9/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/pt-vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/pt-vfork.S
index e9018b2..8941043 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/pt-vfork.S
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/pt-vfork.S
@@ -21,6 +21,7 @@
 #include <tcb-offsets.h>
 
 	.text
+	.globl	__syscall_error
 ENTRY(__vfork)
 	ld	[%g7 + PID], %o5
 	sub	%g0, %o5, %o4
@@ -28,15 +29,17 @@ ENTRY(__vfork)
 
 	LOADSYSCALL(vfork)
 	ta	0x6d
-	bcs,a,pn %xcc, __syscall_error_handler
-	 st	%o5, [%g7 + PID]
-	SYSCALL_ERROR_HANDLER
-	sub	%o1, 1, %o1
+	bcc,pt	%xcc, 2f
+	 mov	%o7, %g1
+	st	%o5, [%g7 + PID]
+	call	__syscall_error
+	 mov	%g1, %o7
+2:	sub	%o1, 1, %o1
 	andcc	%o0, %o1, %o0
 	bne,a,pt %icc, 1f
 	 st	%o5, [%g7 + PID]
 1:	retl
 	 nop
+END(__vfork)
 
-PSEUDO_END (__vfork)
 weak_alias (__vfork, vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
index d8c65ae..aec2d4a 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub at redhat.com>, 2002.
 
@@ -20,55 +20,52 @@
 #include <sysdep.h>
 #include <tls.h>
 #ifndef __ASSEMBLER__
-# include <nptl/pthreadP.h>
+# include <pthreadP.h>
 #endif
 
 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
 
 # undef PSEUDO
-# define PSEUDO(name, syscall_name, args)				      \
-	.text;								      \
-ENTRY(name)								      \
-	ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;			      \
-	brnz,pn %g1, 1f;						      \
-.type	__##syscall_name##_nocancel, at function;				      \
-.globl	__##syscall_name##_nocancel;					      \
-__##syscall_name##_nocancel:						      \
-	 mov SYS_ify(syscall_name), %g1;				      \
-	ta 0x6d;							      \
-	bcs,pn %xcc, __syscall_error_handler;				      \
-	 nop;								      \
-.size	__##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \
-	.subsection 2;							      \
-1:	save %sp, -192, %sp;						      \
-	CENABLE;							      \
-	 nop;								      \
-	mov %o0, %l0;							      \
-	COPY_ARGS_##args						      \
-	mov SYS_ify(syscall_name), %g1;					      \
-	ta 0x6d;							      \
-	bcs,pn %xcc, __syscall_error_handler2;				      \
-	 mov %o0, %l1;							      \
-	CDISABLE;							      \
-	 mov %l0, %o0;							      \
-	jmpl %i7 + 8, %g0;						      \
-	 restore %g0, %l1, %o0;						      \
-	.previous;							      \
-	SYSCALL_ERROR_HANDLER						      \
-	SYSCALL_ERROR_HANDLER2
-
-#define SYSCALL_ERROR_HANDLER2						      \
-SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler2)			      \
-	.global __errno_location;					      \
-        .type   __errno_location, at function;				      \
-	CDISABLE;							      \
-	 mov	%l0, %o0;						      \
-	call	__errno_location;					      \
-	 nop;								      \
-	st	%l1, [%o0];						      \
-	jmpl	%i7 + 8, %g0;						      \
-	 restore %g0, -1, %o0;						      \
-	.previous;
+# define PSEUDO(name, syscall_name, args)	\
+	.text;					\
+	.globl		__syscall_error;	\
+ENTRY(name)					\
+	ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\
+	brnz,pn %g1, 1f;			\
+.type	__##syscall_name##_nocancel, at function;	\
+.globl	__##syscall_name##_nocancel;		\
+__##syscall_name##_nocancel:			\
+	 mov SYS_ify(syscall_name), %g1;	\
+	ta 0x6d;				\
+	bcc,pt %xcc, 8f;			\
+	 mov %o7, %g1;				\
+	call __syscall_error;			\
+	 mov %g1, %o7;				\
+8:	jmpl %o7 + 8, %g0;			\
+	 nop;					\
+.size	__##syscall_name##_nocancel,.-__##syscall_name##_nocancel;\
+1:	save %sp, -192, %sp;			\
+	cfi_def_cfa_register(%fp);		\
+	cfi_window_save;			\
+	cfi_register(%o7, %i7);			\
+	CENABLE;				\
+	 nop;					\
+	mov %o0, %l0;				\
+	COPY_ARGS_##args			\
+	mov SYS_ify(syscall_name), %g1;		\
+	ta 0x6d;				\
+	bcc,pt %xcc, 1f;			\
+	 mov %o0, %l1;				\
+	CDISABLE;				\
+	 mov %l0, %o0;				\
+	call __syscall_error;			\
+	 mov %l1, %o0;				\
+	ba,pt %xcc, 2f;				\
+	 mov -1, %l1;				\
+1:	CDISABLE;				\
+	 mov %l0, %o0;				\
+2:	jmpl %i7 + 8, %g0;			\
+	 restore %g0, %l1, %o0;
 
 # ifdef IS_IN_libpthread
 #  define CENABLE	call __pthread_enable_asynccancel
@@ -105,3 +102,9 @@ SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler2)			      \
 # define NO_CANCELLATION 1
 
 #endif
+
+#ifndef __ASSEMBLER__
+# define RTLD_SINGLE_THREAD_P \
+  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+				   header.multiple_threads) == 0, 1)
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
index 8de9863..b4e89ac 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
@@ -21,6 +21,7 @@
 #include <tcb-offsets.h>
 
 	.text
+	.globl	__syscall_error
 ENTRY(__vfork)
 	ld	[%g7 + PID], %o5
 	sethi	%hi(0x80000000), %o3
@@ -31,16 +32,18 @@ ENTRY(__vfork)
 
 	LOADSYSCALL(vfork)
 	ta	0x6d
-	bcs,a,pn %xcc, __syscall_error_handler
-	 st	%o5, [%g7 + PID]
-	SYSCALL_ERROR_HANDLER
-	sub	%o1, 1, %o1
+	bcc,pt	%xcc, 2f
+	 mov	%o7, %g1
+	st	%o5, [%g7 + PID]
+	call	__syscall_error
+	 mov	%g1, %o7
+2:	sub	%o1, 1, %o1
 	andcc	%o0, %o1, %o0
 	bne,a,pt %icc, 1f
 	 st	%o5, [%g7 + PID]
 1:	retl
 	 nop
+END(__vfork)
 
-PSEUDO_END (__vfork)
-hidden_def (__vfork)
+hidden_def (vfork)
 weak_alias (__vfork, vfork)
-- 
1.6.0.6


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