[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / powerpc / powerpc64 / socket.S

/* Copyright (C) 1995-2015 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   see <http://www.gnu.org/licenses/>.  */

#include <sysdep-cancel.h>
#include <socketcall.h>

#define P(a, b) P2(a, b)
#define P2(a, b) a##b

/* The socket-oriented system calls are handled unusally in Linux.
   They are all gated through the single `socketcall' system call number.
   `socketcall' takes two arguments: the first is the subcode, specifying
   which socket function is being called; and the second is a pointer to
   the arguments to the specific function.

   The .S files for the other calls just #define socket and #include this.
   They also #define a 'number-of-arguments' word in NARGS, which
   defaults to 3.  */

#ifndef NARGS
#ifdef socket
#error NARGS not defined
#endif
#define NARGS 3
#endif

#ifndef __socket
# ifndef NO_WEAK_ALIAS
#  define __socket P(__,socket)
# else
#  define __socket socket
# endif
#endif

#if _CALL_ELF == 2
#define FRAMESIZE (FRAME_MIN_SIZE+16+64)
#define stackblock (FRAME_MIN_SIZE+16)
#else
#define FRAMESIZE (FRAME_MIN_SIZE+16)
#define stackblock (FRAMESIZE+FRAME_PARM_SAVE) /* offset to parm save area.  */
#endif

	.text
ENTRY(__socket)
	CALL_MCOUNT NARGS
	stdu r1,-FRAMESIZE(r1)
	cfi_adjust_cfa_offset(FRAMESIZE)
#if NARGS >= 1
	std  r3,stackblock(r1)
#endif
#if NARGS >= 2
	std  r4,8+stackblock(r1)
#endif
#if NARGS >= 3
	std  r5,16+stackblock(r1)
#endif
#if NARGS >= 4
	std  r6,24+stackblock(r1)
#endif
#if NARGS >= 5
	std  r7,32+stackblock(r1)
#endif
#if NARGS >= 6
	std  r8,40+stackblock(r1)
#endif
#if NARGS >= 7
	std  r9,48+stackblock(r1)
#endif
#if NARGS >= 8
	std  r10,56+stackblock(r1)
#endif
#if NARGS >= 9
#error too many arguments!
#endif

#if defined NEED_CANCELLATION && defined CENABLE
	SINGLE_THREAD_P
	bne-	.Lsocket_cancel
#endif

	li	r3,P(SOCKOP_,socket)
	addi	r4,r1,stackblock
	DO_CALL(SYS_ify(socketcall))
	addi	r1,r1,FRAMESIZE
	cfi_adjust_cfa_offset(-FRAMESIZE)
	PSEUDO_RET

#if defined NEED_CANCELLATION && defined CENABLE
.Lsocket_cancel:
	cfi_adjust_cfa_offset(FRAMESIZE)
	mflr	r9
	std	r9,FRAMESIZE+FRAME_LR_SAVE(r1)
	cfi_offset (lr, FRAME_LR_SAVE)
	CENABLE
	std	r3,FRAME_MIN_SIZE+8(r1)
	li	r3,P(SOCKOP_,socket)
	addi	r4,r1,stackblock
	DO_CALL(SYS_ify(socketcall))
	mfcr	r0
	std	r3,FRAME_MIN_SIZE(r1)
	std	r0,FRAMESIZE+FRAME_CR_SAVE(r1)
	cfi_offset (cr, FRAME_CR_SAVE)
	ld  	r3,FRAME_MIN_SIZE+8(r1)
	CDISABLE
	ld	r4,FRAMESIZE+FRAME_LR_SAVE(r1)
	ld	r0,FRAMESIZE+FRAME_CR_SAVE(r1)
	ld	r3,FRAME_MIN_SIZE(r1)
	mtlr	r4
	mtcr	r0
	addi	r1,r1,FRAMESIZE
	cfi_adjust_cfa_offset(-FRAMESIZE)
	cfi_restore(lr)
	cfi_restore(cr)
	PSEUDO_RET
#endif
PSEUDO_END (__socket)

#ifndef NO_WEAK_ALIAS
weak_alias (__socket, socket)
#endif
Commit	Line	Data
b168057a	1	/* Copyright (C) 1995-2015 Free Software Foundation, Inc.
cfc91acd RM	2	This file is part of the GNU C Library.
	3
	4	The GNU C Library is free software; you can redistribute it and/or
	5	modify it under the terms of the GNU Library General Public License as
	6	published by the Free Software Foundation; either version 2 of the
	7	License, or (at your option) any later version.
	8
	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	Library General Public License for more details.
	13
	14	You should have received a copy of the GNU Library General Public
	15	License along with the GNU C Library; see the file COPYING.LIB. If not,
59ba27a6	16	see <http://www.gnu.org/licenses/>. */
cfc91acd	17
c16abc04	18	#include <sysdep-cancel.h>
cfc91acd RM	19	#include <socketcall.h>
	20
	21	#define P(a, b) P2(a, b)
	22	#define P2(a, b) a##b
	23
	24	/* The socket-oriented system calls are handled unusally in Linux.
	25	They are all gated through the single `socketcall' system call number.
	26	`socketcall' takes two arguments: the first is the subcode, specifying
	27	which socket function is being called; and the second is a pointer to
	28	the arguments to the specific function.
	29
	30	The .S files for the other calls just #define socket and #include this.
	31	They also #define a 'number-of-arguments' word in NARGS, which
	32	defaults to 3. */
	33
	34	#ifndef NARGS
	35	#ifdef socket
	36	#error NARGS not defined
	37	#endif
	38	#define NARGS 3
	39	#endif
	40
cfc91acd	41	#ifndef __socket
d11edae6 RM	42	# ifndef NO_WEAK_ALIAS
	43	# define __socket P(__,socket)
	44	# else
	45	# define __socket socket
	46	# endif
cfc91acd RM	47	#endif
cfc91acd RM	48
8b8a692c UW	49	#if _CALL_ELF == 2
	50	#define FRAMESIZE (FRAME_MIN_SIZE+16+64)
	51	#define stackblock (FRAME_MIN_SIZE+16)
	52	#else
	53	#define FRAMESIZE (FRAME_MIN_SIZE+16)
	54	#define stackblock (FRAMESIZE+FRAME_PARM_SAVE) /* offset to parm save area. */
	55	#endif
bebff237	56
cfc91acd RM	57	.text
cfc91acd RM	58	ENTRY(__socket)
865d953f	59	CALL_MCOUNT NARGS
bebff237 AM	60	stdu r1,-FRAMESIZE(r1)
bebff237 AM	61	cfi_adjust_cfa_offset(FRAMESIZE)
cfc91acd RM	62	#if NARGS >= 1
	63	std r3,stackblock(r1)
	64	#endif
	65	#if NARGS >= 2
	66	std r4,8+stackblock(r1)
	67	#endif
	68	#if NARGS >= 3
	69	std r5,16+stackblock(r1)
	70	#endif
	71	#if NARGS >= 4
	72	std r6,24+stackblock(r1)
	73	#endif
	74	#if NARGS >= 5
	75	std r7,32+stackblock(r1)
	76	#endif
	77	#if NARGS >= 6
	78	std r8,40+stackblock(r1)
	79	#endif
	80	#if NARGS >= 7
	81	std r9,48+stackblock(r1)
	82	#endif
	83	#if NARGS >= 8
	84	std r10,56+stackblock(r1)
	85	#endif
	86	#if NARGS >= 9
	87	#error too many arguments!
	88	#endif
aff4519d UD	89
	90	#if defined NEED_CANCELLATION && defined CENABLE
	91	SINGLE_THREAD_P
	92	bne- .Lsocket_cancel
	93	#endif
	94
bebff237	95	li r3,P(SOCKOP_,socket)
aff4519d UD	96	addi r4,r1,stackblock
aff4519d UD	97	DO_CALL(SYS_ify(socketcall))
bebff237 AM	98	addi r1,r1,FRAMESIZE
bebff237 AM	99	cfi_adjust_cfa_offset(-FRAMESIZE)
aff4519d UD	100	PSEUDO_RET
	101
	102	#if defined NEED_CANCELLATION && defined CENABLE
	103	.Lsocket_cancel:
bebff237	104	cfi_adjust_cfa_offset(FRAMESIZE)
aff4519d	105	mflr r9
8b8a692c UW	106	std r9,FRAMESIZE+FRAME_LR_SAVE(r1)
8b8a692c UW	107	cfi_offset (lr, FRAME_LR_SAVE)
aff4519d	108	CENABLE
8b8a692c	109	std r3,FRAME_MIN_SIZE+8(r1)
bebff237	110	li r3,P(SOCKOP_,socket)
cfc91acd RM	111	addi r4,r1,stackblock
cfc91acd RM	112	DO_CALL(SYS_ify(socketcall))
aff4519d	113	mfcr r0
8b8a692c UW	114	std r3,FRAME_MIN_SIZE(r1)
	115	std r0,FRAMESIZE+FRAME_CR_SAVE(r1)
	116	cfi_offset (cr, FRAME_CR_SAVE)
	117	ld r3,FRAME_MIN_SIZE+8(r1)
aff4519d	118	CDISABLE
8b8a692c UW	119	ld r4,FRAMESIZE+FRAME_LR_SAVE(r1)
	120	ld r0,FRAMESIZE+FRAME_CR_SAVE(r1)
	121	ld r3,FRAME_MIN_SIZE(r1)
aff4519d UD	122	mtlr r4
aff4519d UD	123	mtcr r0
bebff237 AM	124	addi r1,r1,FRAMESIZE
	125	cfi_adjust_cfa_offset(-FRAMESIZE)
	126	cfi_restore(lr)
	127	cfi_restore(cr)
cfc91acd	128	PSEUDO_RET
aff4519d	129	#endif
cfc91acd RM	130	PSEUDO_END (__socket)
cfc91acd RM	131
d11edae6	132	#ifndef NO_WEAK_ALIAS
cfc91acd	133	weak_alias (__socket, socket)
d11edae6	134	#endif