ecos: packages/hal/synth/i386linux/current/include/var

annotate packages/hal/synth/i386linux/current/include/var_arch.h @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

Update all copyright banners to reflect FSF ownership; fix and improve licence text.

author	jlarmour
date	Thu, 29 Jan 2009 17:47:46 +0000
parents	d2c90368aeef
children	b64cee69f7e3

rev	line source
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	1 #ifndef CYGONCE_HAL_VAR_ARCH_H
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	2 #define CYGONCE_HAL_VAR_ARCH_H
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	3
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	4 //=============================================================================
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	5 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	6 // var_arch.h
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	7 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	8 // Per-processor information such as processor save states.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	9 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	10 //=============================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	11 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	12 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	13 // This file is part of eCos, the Embedded Configurable Operating System.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 176 diff changeset	15 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	16 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	17 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	18 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	19 // version.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 176 diff changeset	20 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	21 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	24 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 176 diff changeset	25 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	26 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 176 diff changeset	29 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	30 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	31 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	32 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	33 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	34 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	35 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	36 // General Public License v2.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 176 diff changeset	37 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	38 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	39 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	40 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	41 // ####ECOSGPLCOPYRIGHTEND####
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	42 //=============================================================================
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	43 //#####DESCRIPTIONBEGIN####
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	44 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	45 // Author(s): proven
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	46 // Contributors:proven, pjo, nickg,bartv
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	47 // Date: 1998-10-05
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	48 // Purpose: Define architecture abstractions
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	49 // Usage: #include <cyg/hal/hal_arch.h>
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	50 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	51 //####DESCRIPTIONEND####
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	52 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	53 //=============================================================================
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	54
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	55
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	56 #include <cyg/infra/cyg_type.h>
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	57
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	58 //-----------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	59 // Processor saved states. This structure is also defined in arch.inc for
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	60 // assembly code. Do not change this without changing that (or vice versa).
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	61 // Note: there is no need to worry about floating point contexts, see context.S
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	62
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	63 typedef struct
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	64 {
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	65 cyg_uint32 esp;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	66 cyg_uint32 next_context; // only used when dropping through...
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	67 cyg_uint32 ebp; // ...from switch_ to load_context
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	68 cyg_uint32 ebx;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	69 cyg_uint32 esi;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	70 cyg_uint32 edi;
176 3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST jlarmour parents: 161 diff changeset	71 cyg_bool interrupts; // Are interrupts enabled for this thread?
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	72 } HAL_SavedRegisters;
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	73
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	74
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	75 //-----------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	76 // Bit manipulation routines. These are provided by the processor variant
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	77 // HAL to allow for processor-specific implementations.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	78
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	79 #define HAL_LSBIT_INDEX(index, mask) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	80 CYG_MACRO_START \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	81 asm volatile( "bsfl %1,%0\n" \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	82 : "=r" (index) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	83 : "r" (mask) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	84 ); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	85 CYG_MACRO_END
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	86
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	87 #define HAL_MSBIT_INDEX(index, mask) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	88 CYG_MACRO_START \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	89 asm volatile( "bsrl %1,%0\n" \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	90 : "=r" (index) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	91 : "r" (mask) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	92 ); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	93 CYG_MACRO_END
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	94
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	95 //-----------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	96 // Context Initialization
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	97 // Initialize the context of a thread.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	98 // Arguments:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	99 // _sp_ name of variable containing current sp, will be written with new sp
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	100 // _thread_ thread object address, passed as argument to entry point
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	101 // _entry_ entry point address.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	102 // _id_ bit pattern used in initializing registers, for debugging.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	103
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	104 #define HAL_THREAD_INIT_CONTEXT( _sparg_, _thread_, _entry_, _id_ ) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	105 CYG_MACRO_START \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	106 register CYG_WORD* _sp_ = ((CYG_WORD*)((_sparg_) &~15)); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	107 register HAL_SavedRegisters *_regs_; \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	108 \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	109 /* The 'ret' executed at the end of hal_thread_load_context will */ \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	110 /* use the last entry on the stack as a return pointer (_entry_). */ \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	111 /* Cyg_HardwareThread::thread_entry expects one argument at stack */ \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	112 /* offset 4 (_thread_). The (0xDEADBEEF) entry is the return addr */ \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	113 /* for thread_entry (which is never used). */ \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	114 *(--_sp_) = (CYG_WORD)(0); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	115 *(--_sp_) = (CYG_WORD)(0); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	116 *(--_sp_) = (CYG_WORD)(0); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	117 *(--_sp_) = (CYG_WORD)(0); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	118 *(--_sp_) = (CYG_WORD)(_thread_); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	119 *(--_sp_) = (CYG_WORD)(0); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	120 *(--_sp_) = (CYG_WORD)(_entry_); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	121 \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	122 _regs_ = (HAL_SavedRegisters *) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	123 ((unsigned long)_sp_ - sizeof(HAL_SavedRegisters)); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	124 _regs_->esp = (CYG_WORD) _sp_; \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	125 _regs_->ebx = (CYG_WORD)(_id_); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	126 _regs_->ebp = (CYG_WORD)(_id_); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	127 _regs_->esi = (CYG_WORD)(_id_); \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	128 _regs_->edi = (CYG_WORD)(_id_); \
176 3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST jlarmour parents: 161 diff changeset	129 _regs_->interrupts = true; \
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	130 (_sparg_) = (CYG_ADDRESS) _regs_; \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	131 CYG_MACRO_END
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	132
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	133 //-----------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	134 // Context switch macros.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	135 // The arguments are pointers to locations where the stack pointer
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	136 // of the current thread is to be stored, and from where the sp of the
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	137 // next thread is to be fetched.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	138
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	139 externC void hal_thread_switch_context( CYG_ADDRESS _to_, CYG_ADDRESS _from_ );
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	140 externC void hal_thread_load_context( CYG_ADDRESS _to_ )
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	141 __attribute__ ((noreturn));
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	142
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	143 #define HAL_THREAD_SWITCH_CONTEXT(_fspptr_,_tspptr_) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	144 hal_thread_switch_context((CYG_ADDRESS)_tspptr_,(CYG_ADDRESS)_fspptr_);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	145
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	146 #define HAL_THREAD_LOAD_CONTEXT(_tspptr_) \
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	147 hal_thread_load_context( (CYG_ADDRESS)_tspptr_ );
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	148
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	149 //-----------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	150 // HAL setjmp
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	151
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	152 #define CYGARC_JMP_BUF_SP 0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	153 #define CYGARC_JMP_BUF_EBP 1
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	154 #define CYGARC_JMP_BUF_EBX 2
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	155 #define CYGARC_JMP_BUF_ESI 3
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	156 #define CYGARC_JMP_BUF_EDI 4
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	157 #define CYGARC_JMP_BUF_PC 5
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	158
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	159 #define CYGARC_JMP_BUF_SIZE 6
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	160
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	161 typedef cyg_uint32 hal_jmp_buf[CYGARC_JMP_BUF_SIZE];
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	162
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	163 externC int hal_setjmp(hal_jmp_buf env);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	164 externC void hal_longjmp(hal_jmp_buf env, int val);
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	165
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	166 //-----------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	167 // Minimal and sensible stack sizes: the intention is that applications
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	168 // will use these to provide a stack size in the first instance prior to
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	169 // proper analysis. Idle thread stack should be this big.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	170
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	171 // THESE ARE NOT INTENDED TO BE MICROMETRICALLY ACCURATE FIGURES.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	172 // THEY ARE HOWEVER ENOUGH TO START PROGRAMMING.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	173 // YOU MUST MAKE YOUR STACKS LARGER IF YOU HAVE LARGE "AUTO" VARIABLES!
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	174
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	175 // This is not a config option because it should not be adjusted except
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	176 // under "enough rope" sort of disclaimers.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	177
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	178 // Stack frame overhead per call. 3 local registers (edi, esi, ebx) and
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	179 // return address.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	180 #define CYGNUM_HAL_STACK_FRAME_SIZE (4 * 4)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	181
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	182 // Stack needed for a context switch (i386reg_context_size from i386.inc)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	183 #define CYGNUM_HAL_STACK_CONTEXT_SIZE (4 * 24)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	184
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	185 // Interrupt stack size. Interrupts are handled by signals so the relevant
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	186 // data is MINSIGSTKSIZE (see man sigaltstack) or 2048. Given the
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	187 // multiplier *15 for STACK_SIZE_MINIMUM, this should be adequate.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	188 #define CYGNUM_HAL_STACK_INTERRUPT_SIZE 2048
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	189
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	190 // We define a minimum stack size as the minimum any thread could ever
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	191 // legitimately get away with. We can throw asserts if users ask for less
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	192 // than this. Allow enough for three interrupt sources - clock, serial and
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	193 // one other
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	194 //
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	195 // On the synthetic target memory is cheap so comparatively large stacks
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	196 // are possible. This avoids stack overflow problems when working with
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	197 // the synthetic target, although arguably the problem is now deferred to
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	198 // when the application is moved to real hardware where it will be more
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	199 // difficult to track down.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	200 #define CYGNUM_HAL_STACK_SIZE_MINIMUM (16 * 1024)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	201 #define CYGNUM_HAL_STACK_SIZE_TYPICAL (32 * 1024)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	202
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	203 //--------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	204 // Macros for switching context between two eCos instances (jump from
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	205 // code in ROM to code in RAM or vice versa).
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	206 #define CYGARC_HAL_SAVE_GP()
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	207 #define CYGARC_HAL_RESTORE_GP()
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	208
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	209 //--------------------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	210 #endif // CYGONCE_HAL_VAR_ARCH_H
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: diff changeset	211 // End of var_arch.h

Mercurial > ecos

annotate packages/hal/synth/i386linux/current/include/var_arch.h @ 2729:74dbf4c3f2e1 after-copyright-change-20090129