[glibc.git] / nptl / sysdeps / unix / sysv / linux / ia64 / sysdep-cancel.h

/* Copyright (C) 2002, 2003, 2004, 2006, 2011 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, 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

# ifndef NOT_IN_libc
#  define SYSDEP_CANCEL_ERRNO __libc_errno
# else
#  define SYSDEP_CANCEL_ERRNO errno
# endif
# define SYSDEP_CANCEL_ERROR(args)					      \
.section .gnu.linkonce.t.__syscall_error_##args, "ax";			      \
     .align 32;								      \
     .proc __syscall_error_##args;					      \
     .global __syscall_error_##args;					      \
     .hidden __syscall_error_##args;					      \
     .size __syscall_error_##args, 64;					      \
__syscall_error_##args:							      \
     .prologue;								      \
     .regstk args, 5, args, 0;						      \
     .save ar.pfs, loc0;						      \
     .save rp, loc1;							      \
     .body;								      \
     addl loc4 = @ltoff(@tprel(SYSDEP_CANCEL_ERRNO)), gp;;		      \
     ld8 loc4 = [loc4];							      \
     mov rp = loc1;;							      \
     mov r8 = -1;							      \
     add loc4 = loc4, r13;;						      \
     st4 [loc4] = loc3;							      \
     mov ar.pfs = loc0

# ifndef USE_DL_SYSINFO

#  define PSEUDO(name, syscall_name, args)				      \
.text;									      \
ENTRY (name)								      \
     adds r14 = MULTIPLE_THREADS_OFFSET, r13;;				      \
     ld4 r14 = [r14];							      \
     mov r15 = SYS_ify(syscall_name);;					      \
     cmp4.ne p6, p7 = 0, r14;						      \
(p6) br.cond.spnt .Lpseudo_cancel;;					      \
     break __BREAK_SYSCALL;;						      \
     cmp.eq p6,p0=-1,r10;						      \
(p6) br.cond.spnt.few __syscall_error;					      \
     ret;;								      \
     .endp name;							      \
     .proc __GC_##name;							      \
     .globl __GC_##name;						      \
     .hidden __GC_##name;						      \
__GC_##name:								      \
.Lpseudo_cancel:							      \
     .prologue;								      \
     .regstk args, 5, args, 0;						      \
     .save ar.pfs, loc0;						      \
     alloc loc0 = ar.pfs, args, 5, args, 0;				      \
     .save rp, loc1;							      \
     mov loc1 = rp;;							      \
     .body;								      \
     CENABLE;;								      \
     mov loc2 = r8;							      \
     COPY_ARGS_##args							      \
     mov r15 = SYS_ify(syscall_name);					      \
     break __BREAK_SYSCALL;;						      \
     mov loc3 = r8;							      \
     mov loc4 = r10;							      \
     mov out0 = loc2;							      \
     CDISABLE;;								      \
     cmp.eq p6,p0=-1,loc4;						      \
(p6) br.cond.spnt.few __syscall_error_##args;				      \
     mov r8 = loc3;							      \
     mov rp = loc1;							      \
     mov ar.pfs = loc0;							      \
.Lpseudo_end:								      \
     ret;								      \
     .endp __GC_##name;							      \
     SYSDEP_CANCEL_ERROR(args)

# else /* USE_DL_SYSINFO */

#  define PSEUDO(name, syscall_name, args)				      \
.text;									      \
ENTRY (name)								      \
     .prologue;								      \
     adds r2 = SYSINFO_OFFSET, r13;					      \
     adds r14 = MULTIPLE_THREADS_OFFSET, r13;				      \
     .save ar.pfs, r11;							      \
     mov r11 = ar.pfs;;							      \
     .body;								      \
     ld4 r14 = [r14];							      \
     ld8 r2 = [r2];							      \
     mov r15 = SYS_ify(syscall_name);;					      \
     cmp4.ne p6, p7 = 0, r14;						      \
     mov b7 = r2;							      \
(p6) br.cond.spnt .Lpseudo_cancel;					      \
     br.call.sptk.many b6 = b7;;					      \
     mov ar.pfs = r11;							      \
     cmp.eq p6,p0 = -1, r10;						      \
(p6) br.cond.spnt.few __syscall_error;					      \
     ret;;								      \
     .endp name;							      \
     .proc __GC_##name;							      \
     .globl __GC_##name;						      \
     .hidden __GC_##name;						      \
__GC_##name:								      \
.Lpseudo_cancel:							      \
     .prologue;								      \
     .regstk args, 5, args, 0;						      \
     .save ar.pfs, loc0;						      \
     alloc loc0 = ar.pfs, args, 5, args, 0;				      \
     adds loc4 = SYSINFO_OFFSET, r13;					      \
     .save rp, loc1;							      \
     mov loc1 = rp;;							      \
     .body;								      \
     ld8 loc4 = [loc4];							      \
     CENABLE;;								      \
     mov loc2 = r8;							      \
     mov b7 = loc4;							      \
     COPY_ARGS_##args							      \
     mov r15 = SYS_ify(syscall_name);					      \
     br.call.sptk.many b6 = b7;;					      \
     mov loc3 = r8;							      \
     mov loc4 = r10;							      \
     mov out0 = loc2;							      \
     CDISABLE;;								      \
     cmp.eq p6,p0=-1,loc4;						      \
(p6) br.cond.spnt.few __syscall_error_##args;				      \
     mov r8 = loc3;							      \
     mov rp = loc1;							      \
     mov ar.pfs = loc0;							      \
.Lpseudo_end:								      \
     ret;								      \
     .endp __GC_##name;							      \
     SYSDEP_CANCEL_ERROR(args)

# endif /* USE_DL_SYSINFO */

# undef PSEUDO_END
# define PSEUDO_END(name) .endp

# ifdef IS_IN_libpthread
#  define CENABLE	br.call.sptk.many b0 = __pthread_enable_asynccancel
#  define CDISABLE	br.call.sptk.many b0 = __pthread_disable_asynccancel
# elif !defined NOT_IN_libc
#  define CENABLE	br.call.sptk.many b0 = __libc_enable_asynccancel
#  define CDISABLE	br.call.sptk.many b0 = __libc_disable_asynccancel
# elif defined IS_IN_librt
#  define CENABLE	br.call.sptk.many b0 = __librt_enable_asynccancel
#  define CDISABLE	br.call.sptk.many b0 = __librt_disable_asynccancel
# else
#  error Unsupported library
# endif

# define COPY_ARGS_0	/* Nothing */
# define COPY_ARGS_1	COPY_ARGS_0 mov out0 = in0;
# define COPY_ARGS_2	COPY_ARGS_1 mov out1 = in1;
# define COPY_ARGS_3	COPY_ARGS_2 mov out2 = in2;
# define COPY_ARGS_4	COPY_ARGS_3 mov out3 = in3;
# define COPY_ARGS_5	COPY_ARGS_4 mov out4 = in4;
# define COPY_ARGS_6	COPY_ARGS_5 mov out5 = in5;
# define COPY_ARGS_7	COPY_ARGS_6 mov out6 = in6;

# ifndef __ASSEMBLER__
#  define SINGLE_THREAD_P \
  __builtin_expect (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0, 1)
# else
#  define SINGLE_THREAD_P \
  adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14
# 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
d063d164	1	/* Copyright (C) 2002, 2003, 2004, 2006, 2011 Free Software Foundation, Inc.
b33e6163 RM	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
	16	License along with the GNU C Library; if not, write to the Free
	17	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	18	02111-1307 USA. */
	19
	20	#include <sysdep.h>
	21	#include <tls.h>
	22	#ifndef __ASSEMBLER__
	23	# include <nptl/pthreadP.h>
	24	#endif
	25
7a114794	26	#if !defined NOT_IN_libc \|\| defined IS_IN_libpthread \|\| defined IS_IN_librt
b33e6163 RM	27
b33e6163 RM	28	# undef PSEUDO
c776b3d7	29
d063d164 UD	30	# ifndef NOT_IN_libc
	31	# define SYSDEP_CANCEL_ERRNO __libc_errno
	32	# else
	33	# define SYSDEP_CANCEL_ERRNO errno
	34	# endif
	35	# define SYSDEP_CANCEL_ERROR(args) \
27b02589 UD	36	.section .gnu.linkonce.t.__syscall_error_##args, "ax"; \
	37	.align 32; \
	38	.proc __syscall_error_##args; \
	39	.global __syscall_error_##args; \
	40	.hidden __syscall_error_##args; \
	41	.size __syscall_error_##args, 64; \
	42	__syscall_error_##args: \
	43	.prologue; \
	44	.regstk args, 5, args, 0; \
	45	.save ar.pfs, loc0; \
	46	.save rp, loc1; \
	47	.body; \
	48	addl loc4 = @ltoff(@tprel(SYSDEP_CANCEL_ERRNO)), gp;; \
	49	ld8 loc4 = [loc4]; \
	50	mov rp = loc1;; \
	51	mov r8 = -1; \
	52	add loc4 = loc4, r13;; \
	53	st4 [loc4] = loc3; \
	54	mov ar.pfs = loc0
c776b3d7	55
27b02589 UD	56	# ifndef USE_DL_SYSINFO
	57
	58	# define PSEUDO(name, syscall_name, args) \
b33e6163 RM	59	.text; \
	60	ENTRY (name) \
	61	adds r14 = MULTIPLE_THREADS_OFFSET, r13;; \
	62	ld4 r14 = [r14]; \
	63	mov r15 = SYS_ify(syscall_name);; \
	64	cmp4.ne p6, p7 = 0, r14; \
	65	(p6) br.cond.spnt .Lpseudo_cancel;; \
	66	break __BREAK_SYSCALL;; \
	67	cmp.eq p6,p0=-1,r10; \
	68	(p6) br.cond.spnt.few __syscall_error; \
	69	ret;; \
57a5ea02 UD	70	.endp name; \
	71	.proc __GC_##name; \
	72	.globl __GC_##name; \
	73	.hidden __GC_##name; \
	74	__GC_##name: \
b33e6163 RM	75	.Lpseudo_cancel: \
	76	.prologue; \
	77	.regstk args, 5, args, 0; \
	78	.save ar.pfs, loc0; \
	79	alloc loc0 = ar.pfs, args, 5, args, 0; \
	80	.save rp, loc1; \
	81	mov loc1 = rp;; \
	82	.body; \
	83	CENABLE;; \
	84	mov loc2 = r8; \
	85	COPY_ARGS_##args \
	86	mov r15 = SYS_ify(syscall_name); \
	87	break __BREAK_SYSCALL;; \
	88	mov loc3 = r8; \
	89	mov loc4 = r10; \
	90	mov out0 = loc2; \
	91	CDISABLE;; \
	92	cmp.eq p6,p0=-1,loc4; \
	93	(p6) br.cond.spnt.few __syscall_error_##args; \
	94	mov r8 = loc3; \
	95	mov rp = loc1; \
	96	mov ar.pfs = loc0; \
	97	.Lpseudo_end: \
	98	ret; \
57a5ea02	99	.endp __GC_##name; \
27b02589	100	SYSDEP_CANCEL_ERROR(args)
b33e6163	101
27b02589	102	# else /* USE_DL_SYSINFO */
c776b3d7	103
27b02589	104	# define PSEUDO(name, syscall_name, args) \
c776b3d7 UD	105	.text; \
	106	ENTRY (name) \
	107	.prologue; \
	108	adds r2 = SYSINFO_OFFSET, r13; \
	109	adds r14 = MULTIPLE_THREADS_OFFSET, r13; \
	110	.save ar.pfs, r11; \
	111	mov r11 = ar.pfs;; \
	112	.body; \
	113	ld4 r14 = [r14]; \
	114	ld8 r2 = [r2]; \
	115	mov r15 = SYS_ify(syscall_name);; \
	116	cmp4.ne p6, p7 = 0, r14; \
	117	mov b7 = r2; \
	118	(p6) br.cond.spnt .Lpseudo_cancel; \
	119	br.call.sptk.many b6 = b7;; \
	120	mov ar.pfs = r11; \
	121	cmp.eq p6,p0 = -1, r10; \
	122	(p6) br.cond.spnt.few __syscall_error; \
	123	ret;; \
	124	.endp name; \
	125	.proc __GC_##name; \
	126	.globl __GC_##name; \
	127	.hidden __GC_##name; \
	128	__GC_##name: \
	129	.Lpseudo_cancel: \
	130	.prologue; \
	131	.regstk args, 5, args, 0; \
	132	.save ar.pfs, loc0; \
	133	alloc loc0 = ar.pfs, args, 5, args, 0; \
	134	adds loc4 = SYSINFO_OFFSET, r13; \
	135	.save rp, loc1; \
	136	mov loc1 = rp;; \
	137	.body; \
	138	ld8 loc4 = [loc4]; \
	139	CENABLE;; \
	140	mov loc2 = r8; \
	141	mov b7 = loc4; \
	142	COPY_ARGS_##args \
	143	mov r15 = SYS_ify(syscall_name); \
	144	br.call.sptk.many b6 = b7;; \
	145	mov loc3 = r8; \
	146	mov loc4 = r10; \
	147	mov out0 = loc2; \
	148	CDISABLE;; \
	149	cmp.eq p6,p0=-1,loc4; \
	150	(p6) br.cond.spnt.few __syscall_error_##args; \
	151	mov r8 = loc3; \
	152	mov rp = loc1; \
	153	mov ar.pfs = loc0; \
	154	.Lpseudo_end: \
	155	ret; \
	156	.endp __GC_##name; \
27b02589	157	SYSDEP_CANCEL_ERROR(args)
c776b3d7	158
27b02589	159	# endif /* USE_DL_SYSINFO */
c776b3d7	160
27b02589 UD	161	# undef PSEUDO_END
27b02589 UD	162	# define PSEUDO_END(name) .endp
57a5ea02	163
b33e6163 RM	164	# ifdef IS_IN_libpthread
	165	# define CENABLE br.call.sptk.many b0 = __pthread_enable_asynccancel
	166	# define CDISABLE br.call.sptk.many b0 = __pthread_disable_asynccancel
bbde8527	167	# elif !defined NOT_IN_libc
b33e6163 RM	168	# define CENABLE br.call.sptk.many b0 = __libc_enable_asynccancel
b33e6163 RM	169	# define CDISABLE br.call.sptk.many b0 = __libc_disable_asynccancel
bbde8527 UD	170	# elif defined IS_IN_librt
	171	# define CENABLE br.call.sptk.many b0 = __librt_enable_asynccancel
	172	# define CDISABLE br.call.sptk.many b0 = __librt_disable_asynccancel
	173	# else
	174	# error Unsupported library
b33e6163 RM	175	# endif
b33e6163 RM	176
27b02589 UD	177	# define COPY_ARGS_0 /* Nothing */
	178	# define COPY_ARGS_1 COPY_ARGS_0 mov out0 = in0;
	179	# define COPY_ARGS_2 COPY_ARGS_1 mov out1 = in1;
	180	# define COPY_ARGS_3 COPY_ARGS_2 mov out2 = in2;
	181	# define COPY_ARGS_4 COPY_ARGS_3 mov out3 = in3;
	182	# define COPY_ARGS_5 COPY_ARGS_4 mov out4 = in4;
	183	# define COPY_ARGS_6 COPY_ARGS_5 mov out5 = in5;
	184	# define COPY_ARGS_7 COPY_ARGS_6 mov out6 = in6;
b33e6163 RM	185
	186	# ifndef __ASSEMBLER__
	187	# define SINGLE_THREAD_P \
468777e1	188	__builtin_expect (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0, 1)
b33e6163 RM	189	# else
	190	# define SINGLE_THREAD_P \
	191	adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14
	192	# endif
	193
	194	#elif !defined __ASSEMBLER__
	195
6e627806	196	# define SINGLE_THREAD_P (1)
ce6e047f	197	# define NO_CANCELLATION 1
b33e6163 RM	198
b33e6163 RM	199	#endif
6e627806 UD	200
	201	#ifndef __ASSEMBLER__
	202	# define RTLD_SINGLE_THREAD_P \
	203	__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
	204	header.multiple_threads) == 0, 1)
	205	#endif