ecos: packages/hal/mips/arch/current/include/hal

annotate packages/hal/mips/arch/current/include/hal_arch.h @ 18:7253dcc42a09 ecos-sw-1999-06-25

Merge from eCos master repository on 1999-06-25-15:31:50-BST

author	jlarmour
date	Fri, 25 Jun 1999 08:28:05 +0000
parents	01ce82f3e11a
children	7a6ac9edc838

rev	line source
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1 #ifndef CYGONCE_HAL_HAL_ARCH_H
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 #define CYGONCE_HAL_HAL_ARCH_H
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	4 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	6 // hal_arch.h
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	7 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	8 // Architecture specific abstractions
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	9 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	10 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	11 //####COPYRIGHTBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	12 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	13 // -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	14 // The contents of this file are subject to the Cygnus eCos Public License
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	15 // Version 1.0 (the "License"); you may not use this file except in
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	16 // compliance with the License. You may obtain a copy of the License at
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	17 // http://sourceware.cygnus.com/ecos
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	18 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	19 // Software distributed under the License is distributed on an "AS IS"
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	20 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	21 // License for the specific language governing rights and limitations under
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	22 // the License.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	23 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	24 // The Original Code is eCos - Embedded Cygnus Operating System, released
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	25 // September 30, 1998.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	26 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	27 // The Initial Developer of the Original Code is Cygnus. Portions created
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	28 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	29 // -------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	31 //####COPYRIGHTEND####
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	32 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 //#####DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	34 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	35 // Author(s): nickg
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	36 // Contributors: nickg
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	37 // Date: 1999-02-17
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	38 // Purpose: Define architecture abstractions
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	39 // Usage: #include <cyg/hal/hal_arch.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	40 //
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 //####DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	43 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	45 #include <pkgconf/hal.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46 #include <cyg/infra/cyg_type.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	48 #include <cyg/hal/var_arch.h>
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	49
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	50 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51 // Processor saved states:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 // The layout of this structure is also defined in "mips.inc", for assembly
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 // code. Do not change this without changing that (or vice versa).
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	55 #if defined(CYGHWR_HAL_MIPS_FPU)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	56 # if defined(CYGHWR_HAL_MIPS_FPU_64BIT)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	57 # define CYG_HAL_FPU_REG CYG_WORD64
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	58 # elif defined(CYGHWR_HAL_MIPS_FPU_32BIT)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	59 # define CYG_HAL_FPU_REG CYG_WORD32
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	60 # else
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	61 # error MIPS FPU register size not defined
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	62 # endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	63 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	64
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65 typedef struct
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67 // These are common to all saved states
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	68 CYG_ADDRWORD d[32]; /* Data regs */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	69 CYG_ADDRWORD hi; /* hi word of mpy/div reg */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	70 CYG_ADDRWORD lo; /* lo word of mpy/div reg */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	71 #ifdef CYGHWR_HAL_MIPS_FPU
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	72 CYG_HAL_FPU_REG f[32]; /* FPU registers */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	73 CYG_ADDRWORD fcr31; /* FPU control/status register */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	74 CYG_ADDRWORD fppad; /* Dummy location to make this */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	75 /* structure a multiple of 8 */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	76 /* bytes long. */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	77 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	78
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	79 // These are only saved for exceptions and interrupts
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	80 CYG_ADDRWORD vector; /* Vector number */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	81 CYG_ADDRWORD pc; /* Program Counter */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	82 CYG_ADDRWORD sr; /* Status Reg */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	83 CYG_ADDRWORD cache; /* Cache control register */
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	84
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	85
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 // These are only saved for exceptions, and are not restored
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	87 // when continued.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	88 CYG_ADDRWORD cause; /* Exception cause register */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	89 CYG_ADDRWORD badvr; /* Bad virtual address reg */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	90 CYG_ADDRWORD prid; /* Processor Version */
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	91 CYG_ADDRWORD config; /* Config register */
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	92 } HAL_SavedRegisters;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	93
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	94 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95 // Exception handling function.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 // This function is defined by the kernel according to this prototype. It is
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	97 // invoked from the HAL to deal with any CPU exceptions that the HAL does
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98 // not want to deal with itself. It usually invokes the kernel's exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99 // delivery mechanism.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	101 externC void cyg_hal_deliver_exception( CYG_WORD code, CYG_ADDRWORD data );
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	103 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104 // Bit manipulation macros
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 externC cyg_uint32 hal_lsbit_index(cyg_uint32 mask);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107 externC cyg_uint32 hal_msbit_index(cyg_uint32 mask);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109 #define HAL_LSBIT_INDEX(index, mask) index = hal_lsbit_index(mask);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111 #define HAL_MSBIT_INDEX(index, mask) index = hal_msbit_index(mask);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	113 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 // Context Initialization
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	115
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	116
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	117 // Optional FPU context initialization
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	118 #ifdef CYGHWR_HAL_MIPS_FPU
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	119 #define HAL_THREAD_INIT_FPU_CONTEXT( _regs_, _id_ ) \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	120 { \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	121 for( _i_ = 0; _i_ < 32; _i_++ ) (_regs_)->f[_i_] = (_id_)\|0xFF00\|_i_; \
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 14 diff changeset	122 (_regs_)->fcr31 = 0x01000000; \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	123 }
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	124 #else
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	125 #define HAL_THREAD_INIT_FPU_CONTEXT( _regs_, _id_ )
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	126 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	127
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	128
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 // Initialize the context of a thread.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 // Arguments:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 // _sparg_ name of variable containing current sp, will be written with new sp
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 // _thread_ thread object address, passed as argument to entry point
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 // _entry_ entry point address.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 // _id_ bit pattern used in initializing registers, for debugging.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	135 #define HAL_THREAD_INIT_CONTEXT( _sparg_, _thread_, _entry_, _id_ ) \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	136 { \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	137 register CYG_WORD _sp_ = ((CYG_WORD)_sparg_)-56; \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	138 register HAL_SavedRegisters *_regs_; \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	139 int _i_; \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	140 _sp_ = _sp_ & 0xFFFFFFF0; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	141 _regs_ = (HAL_SavedRegisters *)(((_sp_) - sizeof(HAL_SavedRegisters))&0xFFFFFFF0); \
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	142 for( _i_ = 0; _i_ < 32; _i_++ ) (_regs_)->d[_i_] = (_id_)\|_i_; \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	143 HAL_THREAD_INIT_FPU_CONTEXT( _regs_, _id_ ); \
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	144 (_regs_)->d[29] = (CYG_WORD)(_sp_); /* SP = top of stack */ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	145 (_regs_)->d[04] = (CYG_WORD)(_thread_); /* R4 = arg1 = thread ptr */ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	146 (_regs_)->lo = 0; /* LO = 0 */ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	147 (_regs_)->hi = 0; /* HI = 0 */ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	148 (_regs_)->d[30] = (CYG_WORD)(_sp_); /* FP = top of stack */ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	149 (_regs_)->d[31] = (CYG_WORD)(_entry_); /* LR(d[31]) = entry point*/ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	150 (_regs_)->pc = (CYG_WORD)(_entry_); /* PC = entry point */ \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	151 (_regs_)->sr = 0x00000001; /* SR = ls 3 bits only */ \
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	152 _sparg_ = (CYG_ADDRESS)_regs_; \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	155 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 // Context switch macros.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157 // The arguments are pointers to locations where the stack pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158 // of the current thread is to be stored, and from where the sp of the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159 // next thread is to be fetched.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161 externC void hal_thread_switch_context( CYG_ADDRESS to, CYG_ADDRESS from );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162 externC void hal_thread_load_context( CYG_ADDRESS to )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 __attribute__ ((noreturn));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 #define HAL_THREAD_SWITCH_CONTEXT(_fspptr_,_tspptr_) \
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	166 hal_thread_switch_context( (CYG_ADDRESS)_tspptr_, \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	167 (CYG_ADDRESS)_fspptr_);
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 #define HAL_THREAD_LOAD_CONTEXT(_tspptr_) \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	170 hal_thread_load_context( (CYG_ADDRESS)_tspptr_ );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	171
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	172 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 // Execution reorder barrier.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174 // When optimizing the compiler can reorder code. In multithreaded systems
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	175 // where the order of actions is vital, this can sometimes cause problems.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176 // This macro may be inserted into places where reordering should not happen.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177 // The "memory" keyword is potentially unnecessary, but it is harmless to
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	178 // keep it.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	179
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	180 #define HAL_REORDER_BARRIER() asm volatile ( "" : : : "memory" )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	182 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	183 // Breakpoint support
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	184 // HAL_BREAKPOINT() is a code sequence that will cause a breakpoint to
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	185 // happen if executed.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	186 // HAL_BREAKINST is the value of the breakpoint instruction and
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	187 // HAL_BREAKINST_SIZE is its size in bytes.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	188
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	189 #define HAL_BREAKPOINT(_label_) \
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	190 asm volatile (" .globl " #_label_ ";" \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	191 #_label_":" \
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	192 " break 5" \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	193 );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	195 #define HAL_BREAKINST 0x0005000d
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197 #define HAL_BREAKINST_SIZE 4
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	199 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 // Thread register state manipulation for GDB support.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	202 // Default to a 32 bit register size for GDB register dumps.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	203 #ifndef CYG_HAL_GDB_REG
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	204 #define CYG_HAL_GDB_REG CYG_WORD32
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	205 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	206
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207 // Translate a stack pointer as saved by the thread context macros above into
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208 // a pointer to a HAL_SavedRegisters structure.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	209 #define HAL_THREAD_GET_SAVED_REGISTERS( _sp_, _regs_ ) \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	210 (_regs_) = (HAL_SavedRegisters *)(_sp_)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	212 // If the CPU has an FPU, we also need to move the FPU registers.
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	213 #ifdef CYGHWR_HAL_MIPS_FPU
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	214 #define HAL_GET_GDB_FPU_REGISTERS( _regval_ , _regs_ ) \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	215 CYG_MACRO_START \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	216 int _i_; \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	217 for( _i_ = 0; _i_ < 32; _i_++ ) \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	218 _regval_[38+_i_] = (_regs_)->f[_i_]; \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	219 _regval_[70] = (_regs_)->fcr31; \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	220 CYG_MACRO_END
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	221 #define HAL_SET_GDB_FPU_REGISTERS( _regs_ , _regval_ ) \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	222 CYG_MACRO_START \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	223 int _i_; \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	224 for( _i_ = 0; _i_ < 32; _i_++ ) \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	225 (_regs_)->f[_i_] = _regval_[38+_i_]; \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	226 (_regs_)->fcr31 = _regval_[70]; \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	227 CYG_MACRO_END
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	228 #else
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	229 #define HAL_GET_GDB_FPU_REGISTERS( _regval_ , _regs_ )
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	230 #define HAL_SET_GDB_FPU_REGISTERS( _regs_ , _regval_ )
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	231 #endif
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	232
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 // Copy a set of registers from a HAL_SavedRegisters structure into a
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234 // GDB ordered array.
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	235 #define HAL_GET_GDB_REGISTERS( _aregval_ , _regs_ ) \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	236 { \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	237 CYG_HAL_GDB_REG _regval_ = (CYG_HAL_GDB_REG )(_aregval_); \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	238 int _i_; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	239 \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	240 for( _i_ = 0; _i_ < 32; _i_++ ) \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	241 _regval_[_i_] = (_regs_)->d[_i_]; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	242 \
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	243 HAL_GET_GDB_FPU_REGISTERS( _regval_, _regs_ ); \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	244 \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	245 _regval_[32] = (_regs_)->sr; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	246 _regval_[33] = (_regs_)->lo; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	247 _regval_[34] = (_regs_)->hi; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	248 _regval_[35] = (_regs_)->badvr; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	249 _regval_[36] = (_regs_)->cause; \
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	250 _regval_[37] = (_regs_)->pc; \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253 // Copy a GDB ordered array into a HAL_SavedRegisters structure.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254 #define HAL_SET_GDB_REGISTERS( _regs_ , _aregval_ ) \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	255 { \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	256 CYG_HAL_GDB_REG _regval_ = (CYG_HAL_GDB_REG )(_aregval_); \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257 int _i_; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	258 \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 for( _i_ = 0; _i_ < 32; _i_++ ) \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	260 (_regs_)->d[_i_] = _regval_[_i_]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261 \
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	262 HAL_SET_GDB_FPU_REGISTERS( _regs_, _regval_ ); \
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	263 \
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 (_regs_)->sr = _regval_[32]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	265 (_regs_)->lo = _regval_[33]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 (_regs_)->hi = _regval_[34]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	267 (_regs_)->badvr = _regval_[35]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	268 (_regs_)->cause = _regval_[36]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	269 (_regs_)->pc = _regval_[37]; \
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	270 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	272 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 // HAL setjmp
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	274 // Note: These definitions are repeated in hal_arch.h. If changes are
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	275 // required remember to update both sets.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	276
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	277 #define CYGARC_JMP_BUF_SP 0
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	278 #define CYGARC_JMP_BUF_R16 1
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	279 #define CYGARC_JMP_BUF_R17 2
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	280 #define CYGARC_JMP_BUF_R18 3
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	281 #define CYGARC_JMP_BUF_R19 4
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	282 #define CYGARC_JMP_BUF_R20 5
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	283 #define CYGARC_JMP_BUF_R21 6
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	284 #define CYGARC_JMP_BUF_R22 7
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	285 #define CYGARC_JMP_BUF_R23 8
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	286 #define CYGARC_JMP_BUF_R28 9
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	287 #define CYGARC_JMP_BUF_R30 10
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	288 #define CYGARC_JMP_BUF_R31 11
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	290 #define CYGARC_JMP_BUF_SIZE 12
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	291
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	292 typedef cyg_uint32 hal_jmp_buf[CYGARC_JMP_BUF_SIZE];
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	293
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	294 externC int hal_setjmp(hal_jmp_buf env);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	295 externC void hal_longjmp(hal_jmp_buf env, int val);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	296
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	297 //-------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	298 // Idle thread code.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	299 // This macro is called in the idle thread loop, and gives the HAL the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	300 // chance to insert code. Typical idle thread behaviour might be to halt the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	301 // processor.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	302
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	303 externC void hal_idle_thread_action(cyg_uint32 loop_count);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	304
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 #define HAL_IDLE_THREAD_ACTION(_count_) hal_idle_thread_action(_count_)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	306
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	307 //--------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	308 // Minimal and sensible stack sizes: the intention is that applications
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	309 // will use these to provide a stack size in the first instance prior to
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	310 // proper analysis. Idle thread stack should be this big.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	311
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	312 // THESE ARE NOT INTENDED TO BE MICROMETRICALLY ACCURATE FIGURES.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	313 // THEY ARE HOWEVER ENOUGH TO START PROGRAMMING.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	314 // YOU MUST MAKE YOUR STACKS LARGER IF YOU HAVE LARGE "AUTO" VARIABLES!
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	315
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	316 // We define quite large stack needs for SPARClite, for it requires 576
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	317 // bytes (144 words) to process an interrupt and thread-switch, and
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	318 // momentarily, but needed in case of recursive interrupts, it needs 208
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	319 // words - if a sequence of saves to push out other regsets is interrupted.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	320
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	321 // This is not a config option because it should not be adjusted except
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	322 // under "enough rope" sort of disclaimers.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	323
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	324 // Typical case stack frame size: return link + 4 pushed registers + some locals.
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	325 #define CYGNUM_HAL_STACK_FRAME_SIZE (48)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	326
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	327 // Stack needed for a context switch:
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	328 #if defined(CYGHWR_HAL_MIPS_FPU)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	329 # if defined(CYGHWR_HAL_MIPS_FPU_64BIT)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	330 #define CYGNUM_HAL_STACK_CONTEXT_SIZE (((32+12)4)+(328))
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	331 # elif defined(CYGHWR_HAL_MIPS_FPU_32BIT)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	332 #define CYGNUM_HAL_STACK_CONTEXT_SIZE (((32+12)4)+(324))
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	333 # else
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	334 # error MIPS FPU register size not defined
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	335 # endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	336 #else
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	337 #define CYGNUM_HAL_STACK_CONTEXT_SIZE ((32+10)*4)
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	338 #endif
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	339
d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	340
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	341
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	342 // Interrupt + call to ISR, interrupt_end() and the DSR
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	343 #define CYGNUM_HAL_STACK_INTERRUPT_SIZE (4+2*CYGNUM_HAL_STACK_CONTEXT_SIZE)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	344
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	345 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	346
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	347 // An interrupt stack which is large enough for all possible interrupt
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	348 // conditions (and only used for that purpose) exists. "User" stacks
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	349 // can be much smaller
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	350
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	351 #define CYGNUM_HAL_STACK_SIZE_MINIMUM (CYGNUM_HAL_STACK_CONTEXT_SIZE+ \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	352 CYGNUM_HAL_STACK_INTERRUPT_SIZE*2+ \
6 d376b777e2ce Merge from eCos master repository on 1999-05-14-19:27:43-BST jlarmour parents: 2 diff changeset	353 CYGNUM_HAL_STACK_FRAME_SIZE*8)
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 6 diff changeset	354 #define CYGNUM_HAL_STACK_SIZE_TYPICAL (CYGNUM_HAL_STACK_SIZE_MINIMUM+1024)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	355
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	356 #else // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	357
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	358 // No separate interrupt stack exists. Make sure all threads contain
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	359 // a stack sufficiently large.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	360
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	361 #define CYGNUM_HAL_STACK_SIZE_MINIMUM (4096)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	362 #define CYGNUM_HAL_STACK_SIZE_TYPICAL (4096)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	363
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	364 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	365
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	366 //--------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	367 #endif // CYGONCE_HAL_HAL_ARCH_H
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	368 // End of hal_arch.h

Mercurial > ecos

annotate packages/hal/mips/arch/current/include/hal_arch.h @ 18:7253dcc42a09 ecos-sw-1999-06-25