WebSVN – HelenOS – Diff – /branches/tracing/uspace/lib/libc/arch/arm32/include/fibril.h


/*
 * Copyright (c) 2007 Michal Kebrt
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup libcarm32  
 * @{
 */
/** @file
 *  @brief Fibrils related declarations.
 */
 
#ifndef LIBC_arm32_FIBRIL_H_
#define LIBC_arm32_FIBRIL_H_
 
#include <sys/types.h>
#include <align.h>
#include <thread.h>
 
/** Size of a stack item */
#define STACK_ITEM_SIZE     4
 
/** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */
#define STACK_ALIGNMENT     8
 
#define SP_DELTA    (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
 
 
/** Sets data to the context.
 *  
 *  @param c     Context (#context_t).
 *  @param _pc   Program counter.
 *  @param stack Stack address.
 *  @param size  Stack size.
 *  @param ptls  Pointer to the TCB.
 */
#define context_set(c, _pc, stack, size, ptls)          \
    (c)->pc = (sysarg_t) (_pc);             \
    (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA;     \
        (c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET;
 
 
/** Fibril context.
 *
 *  Only registers preserved accross function calls are included. r9 is used
 *  to store a TLS address. -ffixed-r9 gcc forces gcc not to use this
 *  register. -mtp=soft forces gcc to use #__aeabi_read_tp to obtain
 *  TLS address.
 */
typedef struct  {
    uint32_t sp;
    uint32_t pc;
    uint32_t r4;
    uint32_t r5;
    uint32_t r6;
    uint32_t r7;
    uint32_t r8;
    uint32_t tls;
    uint32_t r10;
    uint32_t r11;
} context_t;
 
 
#endif
 
/** @}
 */
 

Rev 2787	Rev 4692
1	/*	1	/*
2	* Copyright (c) 2007 Michal Kebrt	2	* Copyright (c) 2007 Michal Kebrt
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup libcarm32	29	/** @addtogroup libcarm32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	* @brief Fibrils related declarations.	33	* @brief Fibrils related declarations.
34	*/	34	*/
35		35
36	#ifndef LIBC_arm32_FIBRIL_H_	36	#ifndef LIBC_arm32_FIBRIL_H_
37	#define LIBC_arm32_FIBRIL_H_	37	#define LIBC_arm32_FIBRIL_H_
38		38
39	#include <sys/types.h>	39	#include <sys/types.h>
40	#include <align.h>	40	#include <align.h>
41	#include "thread.h"	41	#include <thread.h>
42		42
43	/** Size of a stack item */	43	/** Size of a stack item */
44	#define STACK_ITEM_SIZE 4	44	#define STACK_ITEM_SIZE 4
45		45
46	/** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */	46	/** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */
47	#define STACK_ALIGNMENT 8	47	#define STACK_ALIGNMENT 8
48		48
49	#define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))	49	#define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
50		50
51		51
52	/** Sets data to the context.	52	/** Sets data to the context.
53	*	53	*
54	* @param c Context (#context_t).	54	* @param c Context (#context_t).
55	* @param _pc Program counter.	55	* @param _pc Program counter.
56	* @param stack Stack address.	56	* @param stack Stack address.
57	* @param size Stack size.	57	* @param size Stack size.
58	* @param ptls Pointer to the TCB.	58	* @param ptls Pointer to the TCB.
59	*/	59	*/
60	#define context_set(c, _pc, stack, size, ptls) \	60	#define context_set(c, _pc, stack, size, ptls) \
61	(c)->pc = (sysarg_t) (_pc); \	61	(c)->pc = (sysarg_t) (_pc); \
62	(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \	62	(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
63	(c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET;	63	(c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET;
64		64
65		65
66	/** Fibril context.	66	/** Fibril context.
67	*	67	*
68	* Only registers preserved accross function calls are included. r9 is used	68	* Only registers preserved accross function calls are included. r9 is used
69	* to store a TLS address. -ffixed-r9 gcc forces gcc not to use this	69	* to store a TLS address. -ffixed-r9 gcc forces gcc not to use this
70	* register. -mtp=soft forces gcc to use #__aeabi_read_tp to obtain	70	* register. -mtp=soft forces gcc to use #__aeabi_read_tp to obtain
71	* TLS address.	71	* TLS address.
72	*/	72	*/
73	typedef struct {	73	typedef struct {
74	uint32_t sp;	74	uint32_t sp;
75	uint32_t pc;	75	uint32_t pc;
76	uint32_t r4;	76	uint32_t r4;
77	uint32_t r5;	77	uint32_t r5;
78	uint32_t r6;	78	uint32_t r6;
79	uint32_t r7;	79	uint32_t r7;
80	uint32_t r8;	80	uint32_t r8;
81	uint32_t tls;	81	uint32_t tls;
82	uint32_t r10;	82	uint32_t r10;
83	uint32_t r11;	83	uint32_t r11;
84	} context_t;	84	} context_t;
85		85
86		86
87	#endif	87	#endif
88		88
89	/** @}	89	/** @}
90	*/	90	*/
91		91

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(root)/branches/tracing/uspace/lib/libc/arch/arm32/include/fibril.h – Rev 2787 → 4692