[thirdparty/glibc.git] / nptl / sysdeps / unix / sysv / linux / sparc / sparc64 / sysdep-cancel.h

/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.

   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>
#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)	\
	.text;					\
	.globl		__syscall_error;	\
ENTRY(name)					\
	ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\
	brnz,pn %g1, 1f;			\
.type	__##syscall_name##_nocancel,@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
#  define CDISABLE	call __pthread_disable_asynccancel
# elif !defined NOT_IN_libc
#  define CENABLE	call __libc_enable_asynccancel
#  define CDISABLE	call __libc_disable_asynccancel
# elif defined IS_IN_librt
#  define CENABLE	call __librt_enable_asynccancel
#  define CDISABLE	call __librt_disable_asynccancel
# else
#  error Unsupported library
# endif

#define COPY_ARGS_0	/* Nothing */
#define COPY_ARGS_1	COPY_ARGS_0 mov %i0, %o0;
#define COPY_ARGS_2	COPY_ARGS_1 mov %i1, %o1;
#define COPY_ARGS_3	COPY_ARGS_2 mov %i2, %o2;
#define COPY_ARGS_4	COPY_ARGS_3 mov %i3, %o3;
#define COPY_ARGS_5	COPY_ARGS_4 mov %i4, %o4;
#define COPY_ARGS_6	COPY_ARGS_5 mov %i5, %o5;

# ifndef __ASSEMBLER__
#  define SINGLE_THREAD_P \
  __builtin_expect (THREAD_GETMEM (THREAD_SELF,				      \
				   header.multiple_threads) == 0, 1)
# else
#  define SINGLE_THREAD_P ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1
# endif

#elif !defined __ASSEMBLER__

# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1

#endif

#ifndef __ASSEMBLER__
# define RTLD_SINGLE_THREAD_P \
  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
				   header.multiple_threads) == 0, 1)
#endif
Commit	Line	Data
d4697bc9	1	/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
cd2fbe58 UD	2	This file is part of the GNU C Library.
	3	Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	16	License along with the GNU C Library; if not, see
59ba27a6 PE	17	<http://www.gnu.org/licenses/>. */
cd2fbe58 UD	18
	19	#include <sysdep.h>
	20	#include <tls.h>
	21	#ifndef __ASSEMBLER__
	22	# include <nptl/pthreadP.h>
	23	#endif
	24
	25	#if !defined NOT_IN_libc \|\| defined IS_IN_libpthread \|\| defined IS_IN_librt
	26
	27	# undef PSEUDO
7ccbe1a1 RM	28	# define PSEUDO(name, syscall_name, args) \
	29	.text; \
	30	.globl __syscall_error; \
	31	ENTRY(name) \
	32	ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\
	33	brnz,pn %g1, 1f; \
	34	.type __##syscall_name##_nocancel,@function; \
	35	.globl __##syscall_name##_nocancel; \
	36	__##syscall_name##_nocancel: \
	37	mov SYS_ify(syscall_name), %g1; \
	38	ta 0x6d; \
	39	bcc,pt %xcc, 8f; \
	40	mov %o7, %g1; \
	41	call __syscall_error; \
	42	mov %g1, %o7; \
	43	8: jmpl %o7 + 8, %g0; \
	44	nop; \
	45	.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;\
	46	1: save %sp, -192, %sp; \
	47	cfi_def_cfa_register(%fp); \
	48	cfi_window_save; \
	49	cfi_register(%o7, %i7); \
	50	CENABLE; \
	51	nop; \
	52	mov %o0, %l0; \
	53	COPY_ARGS_##args \
	54	mov SYS_ify(syscall_name), %g1; \
	55	ta 0x6d; \
	56	bcc,pt %xcc, 1f; \
	57	mov %o0, %l1; \
	58	CDISABLE; \
	59	mov %l0, %o0; \
	60	call __syscall_error; \
	61	mov %l1, %o0; \
	62	ba,pt %xcc, 2f; \
	63	mov -1, %l1; \
	64	1: CDISABLE; \
	65	mov %l0, %o0; \
	66	2: jmpl %i7 + 8, %g0; \
	67	restore %g0, %l1, %o0;
cd2fbe58 UD	68
	69	# ifdef IS_IN_libpthread
	70	# define CENABLE call __pthread_enable_asynccancel
	71	# define CDISABLE call __pthread_disable_asynccancel
	72	# elif !defined NOT_IN_libc
	73	# define CENABLE call __libc_enable_asynccancel
	74	# define CDISABLE call __libc_disable_asynccancel
	75	# elif defined IS_IN_librt
	76	# define CENABLE call __librt_enable_asynccancel
	77	# define CDISABLE call __librt_disable_asynccancel
	78	# else
	79	# error Unsupported library
	80	# endif
	81
	82	#define COPY_ARGS_0 /* Nothing */
	83	#define COPY_ARGS_1 COPY_ARGS_0 mov %i0, %o0;
	84	#define COPY_ARGS_2 COPY_ARGS_1 mov %i1, %o1;
	85	#define COPY_ARGS_3 COPY_ARGS_2 mov %i2, %o2;
	86	#define COPY_ARGS_4 COPY_ARGS_3 mov %i3, %o3;
	87	#define COPY_ARGS_5 COPY_ARGS_4 mov %i4, %o4;
	88	#define COPY_ARGS_6 COPY_ARGS_5 mov %i5, %o5;
	89
	90	# ifndef __ASSEMBLER__
	91	# define SINGLE_THREAD_P \
	92	__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
	93	header.multiple_threads) == 0, 1)
	94	# else
	95	# define SINGLE_THREAD_P ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1
	96	# endif
	97
	98	#elif !defined __ASSEMBLER__
	99
6e627806	100	# define SINGLE_THREAD_P (1)
ce6e047f	101	# define NO_CANCELLATION 1
cd2fbe58 UD	102
cd2fbe58 UD	103	#endif
6e627806 UD	104
	105	#ifndef __ASSEMBLER__
	106	# define RTLD_SINGLE_THREAD_P \
	107	__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
	108	header.multiple_threads) == 0, 1)
	109	#endif