ecos: packages/hal/i386/arch/current/include/arch.inc annotate

annotate packages/hal/i386/arch/current/include/arch.inc @ 208:e0c0827131d1 ecos

Merge from eCos master repository on 2002-05-20-20:11:54-BST

author	jlarmour
date	Mon, 20 May 2002 22:19:26 +0000
parents	8147f1c99f15
children	d2c90368aeef

rev	line source
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	1 #ifndef CYGONCE_HAL_ARCH_INC
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	2 #define CYGONCE_HAL_ARCH_INC
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	3 ##=============================================================================
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	4 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	5 ## arch.inc
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	6 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	7 ## i386 assembler header file
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	8 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	9 ##=============================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	10 #####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	11 # -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	12 # This file is part of eCos, the Embedded Configurable Operating System.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	13 # Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	14 #
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	15 # eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	16 # the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	17 # Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	18 #
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	19 # eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	20 # WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	21 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	22 # for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	23 #
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	24 # You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	25 # with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	26 # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	27 #
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	28 # As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	29 # or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	30 # with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	31 # by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	32 # License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	33 # in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	34 #
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	35 # This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	36 # this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	37 #
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	38 # Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	39 # at http://sources.redhat.com/ecos/ecos-license
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	40 # -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	41 #####ECOSGPLCOPYRIGHTEND####
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	42 ##=============================================================================
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	43 #######DESCRIPTIONBEGIN####
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	44 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	45 ## Author(s): nickg
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	46 ## Contributors: nickg, pjo
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	47 ## Date: 1999-10-15
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	48 ## Purpose: Architecture definitions.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	49 ## Description: This file contains various definitions and macros that are
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	50 ## useful for writing assembly code for the i386 CPU family.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	51 ## Usage:
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	52 ## #include <cyg/hal/arch.inc>
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	53 ## ...
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	54 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	55 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	56 ######DESCRIPTIONEND####
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	57 ##
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	58 ##=============================================================================
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	59
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	60 #include <cyg/hal/i386.inc>
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	61
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	62 #include <cyg/hal/variant.inc>
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	63
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	64 ##-----------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	65 ## CPU specific macros. These provide a common assembler interface to
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	66 ## operations that may have CPU specific implementations on different
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	67 ## variants of the architecture.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	68
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	69 #ifndef CYGPKG_HAL_I386_CPU_INIT_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	70 # Initialize CPU
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	71 .macro hal_cpu_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	72 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	73 #endif /* !CYGPKG_HAL_I386_CPU_INIT_DEFINED */
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	74
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	75 ##-----------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	76
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	77 #ifndef CYGPKG_HAL_I386_INTC_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	78
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	79 #ifndef CYGPKG_HAL_I386_INTC_INIT_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	80 # initialize all interrupts to disabled
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	81 .macro hal_intc_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	82 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	83 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	84
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	85 .macro hal_intc_decode vnum
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	86 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	87
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	88 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	89
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	90 #------------------------------------------------------------------------------
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	91 # SMP support
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	92
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	93 #ifdef CYGPKG_HAL_SMP_SUPPORT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	94
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	95 .macro hal_smp_init
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	96 #if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	97 movl $0,cyg_hal_smp_vsr_sync_flag
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	98 #endif
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	99 .endm
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	100
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	101 // Put CPU number in register
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	102 .macro hal_smp_cpu reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	103 movl cyg_hal_smp_local_apic,\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	104 movl 0x20(\reg),\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	105 shrl $24,\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	106 .endm
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	107
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	108 #else
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	109
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	110 .macro hal_smp_init
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	111 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	112
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	113 .macro hal_smp_cpu reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	114 movl $0,\reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	115 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	116
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	117 #endif
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	118
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	119 #------------------------------------------------------------------------------
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	120 # Stack switching macros
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	121
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	122 #ifndef CYG_HAL_I386_INTSTACK_MACROS_DEFINED
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	123
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	124 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	125
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	126 #ifdef CYGPKG_HAL_SMP_SUPPORT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	127
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	128 .macro hal_init_istack reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	129 hal_smp_cpu %ebx
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	130 movl $__interrupt_stack_vector,%ecx
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	131 movl $CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE,%eax
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	132 imull %ebx,%eax
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	133 addl $__interrupt_stack_first,%eax
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	134 movl %eax,0(%ecx,%ebx,4)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	135 movl $CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE,\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	136 addl %eax,\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	137 .endm
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	138
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	139 .macro hal_load_istack reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	140 hal_load_istack_base \reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	141 addl $CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE,\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	142 .endm
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	143
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	144 .macro hal_load_istack_base reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	145 hal_smp_cpu \reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	146 movl $__interrupt_stack_vector,%eax
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	147 movl 0(%eax,\reg,4),\reg
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	148 .endm
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	149
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	150 #else // CYGPKG_HAL_SMP_SUPPORT
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	151 .macro hal_init_istack reg,tr
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	152 movl $__interrupt_stack,\reg // Load interrupt stack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	153 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	154
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	155 .macro hal_load_istack reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	156 movl $__interrupt_stack,\reg // Load interrupt stack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	157 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	158
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	159 .macro hal_load_istack_base reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	160 movl $__interrupt_stack_base,\reg // Load interrupt stack base
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	161 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	162
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 200 diff changeset	163 #endif // CYGPKG_HAL_SMP_SUPPORT
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	164
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	165 .macro hal_to_intstack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	166 hal_load_istack_base %ebx // EBX = stack base
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	167 movl %ebx,%eax
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	168 addl $CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE,%eax
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	169 cmpl %ebx,%ebp # compare SP with istack base
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	170 jb 1f # if sp < istack base, switch
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	171 cmpl %eax,%ebp # compare SP with istack top
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	172 jbe 2f # if sp < istack top, dont switch
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	173 1:
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	174 movl %eax,%esp # move on to new stack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	175 2:
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	176 pushl %ebp # Save old SP on new stack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	177 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	178
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	179 .macro hal_from_intstack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	180 popl %esp # pop old SP from stack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	181 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	182
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	183 #define CYG_HAL_I386_INTSTACK_MACROS_DEFINED
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	184
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	185
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	186 #else // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	187
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	188 .macro hal_init_istack reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	189 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	190
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	191 .macro hal_load_istack_base reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	192 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	193
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	194 .macro hal_load_istack reg
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	195 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	196
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	197 .macro hal_to_intstack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	198 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	199
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	200 .macro hal_from_intstack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	201 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	202
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	203 #define CYG_HAL_I386_INTSTACK_MACROS_DEFINED
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	204
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	205 #endif // CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	206
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	207 #endif // CYG_HAL_I386_INTSTACK_MACROS_DEFINED
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	208
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	209 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	210 # FPU macros.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	211
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	212 #ifndef CYGPKG_HAL_I386_FPU_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	213
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	214 #ifdef CYGHWR_HAL_I386_FPU
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	215
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	216 #define CYGPKG_HAL_I386_FPU_DEFINED
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	217
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	218 .macro hal_fpu_init
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	219 # Tell the CPU to use the math hardware.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	220 movl %cr0, %eax
171 42f843b391aa Merge from eCos master repository on 2001-07-18-03:13:25-BST jlarmour parents: 161 diff changeset	221 orl $0x32, %eax # Set MP, ET, NE bits
42f843b391aa Merge from eCos master repository on 2001-07-18-03:13:25-BST jlarmour parents: 161 diff changeset	222 andl $~0x8, %eax # And clear TS bit
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	223 movl %eax, %cr0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	224
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	225 finit # and initialize...
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	226
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	227 ## Enable floating point exceptions. Bit mask:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	228 ## 1 - invalid operation
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	229 ## 2 - denormalized operand
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	230 ## 4 - zero divide
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	231 ## 8 - overflow
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	232 ## 16 - underflow
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	233 ## 32 - precision
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	234 pushl $0 # space for CW
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	235 fstcw 0(%esp) # store FPCW to stack
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	236 movl 0(%esp),%eax # get into EAX
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	237 andb $(~0x04),%al # allow only zero divide exceptions
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	238 movl %eax,0(%esp) # put back into memory
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	239 fldcw 0(%esp) # reload
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	240 addl $4,%esp # pop value
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	241
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	242 #ifdef CYGHWR_HAL_I386_PENTIUM_SSE
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	243 # set CR4.OSFXSR to safely use stmxcsr/ldmxcsr
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	244 movl %cr4, %eax
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	245 orl $0x200, %eax
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	246 movl %eax, %cr4
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	247
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	248 ## Enable SIMD exceptions. Bit mask:
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	249 ## 0x0080 - invalid operation
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	250 ## 0x0100 - denormalized operand
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	251 ## 0x0200 - zero divide
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	252 ## 0x0400 - overflow
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	253 ## 0x0800 - underflow
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	254 ## 0x1000 - precision
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	255 pushl $0 # space for MXCSR
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	256 stmxcsr 0(%esp) # store MXCSR to stack
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	257 movl 0(%esp),%eax # get into EAX
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	258 andw $(~0x0200),%ax # allow only zero divide exceptions
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	259 movl %eax,0(%esp) # put back into memory
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	260 ldmxcsr 0(%esp) # reload
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	261 addl $4,%esp # pop value
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	262 #endif
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	263
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	264 #ifdef CYGHWR_HAL_I386_FPU_SWITCH_LAZY
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	265 # Tell the CPU to generate an FPU unavailable exception
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	266 # when the FPU is first used.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	267 movl %cr0, %eax
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	268 orl $0x8, %eax
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	269 movl %eax, %cr0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	270 # Plant a pointer to the FPU switch VSR into slot 7
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	271 # of the VSR table.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	272 movl $__fpu_switch_vsr,%eax
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	273 movl %eax,(hal_vsr_table+7*4)
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	274 # Now create an FPU context on the stack so that we can take
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	275 # FPU-using interrupts and exceptions before the machine starts
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	276 # up.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	277 subl $i386reg_fpucontext_size,%esp
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	278 movl $0,i386reg_fpucontext_valid(%esp)
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	279 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	280 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	281 movl %esp,0(%ecx,%ebx,4) # save in table[cpu] entry
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	282 #endif
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	283 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	284
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	285 .macro hal_fpu_cpu_init
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	286 # Tell the CPU to use the math hardware.
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	287 movl %cr0, %eax
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	288 orl $0x32, %eax # Set MP, ET, NE bits
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	289 andl $~0x8, %eax # And clear TS bit
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	290 movl %eax, %cr0
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	291
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	292 finit # and initialize...
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	293
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	294 ## Enable floating point exceptions. Bit mask:
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	295 ## 1 - invalid operation
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	296 ## 2 - denormalized operand
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	297 ## 4 - zero divide
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	298 ## 8 - overflow
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	299 ## 16 - underflow
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	300 ## 32 - precision
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	301 pushl $0 # space for CW
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	302 fstcw 0(%esp) # store FPCW to stack
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	303 movl 0(%esp),%eax # get into EAX
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	304 andb $(~0x04),%al # allow only zero divide exceptions
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	305 movl %eax,0(%esp) # put back into memory
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	306 fldcw 0(%esp) # reload
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	307 addl $4,%esp # pop value
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	308
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	309 #ifdef CYGHWR_HAL_I386_PENTIUM_SSE
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	310 # set CR4.OSFXSR to safely use stmxcsr/ldmxcsr
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	311 movl %cr4, %eax
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	312 orl $0x200, %eax
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	313 movl %eax, %cr4
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	314
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	315 ## Enable SIMD exceptions. Bit mask:
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	316 ## 0x0080 - invalid operation
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	317 ## 0x0100 - denormalized operand
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	318 ## 0x0200 - zero divide
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	319 ## 0x0400 - overflow
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	320 ## 0x0800 - underflow
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	321 ## 0x1000 - precision
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	322 pushl $0 # space for MXCSR
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	323 stmxcsr 0(%esp) # store MXCSR to stack
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	324 movl 0(%esp),%eax # get into EAX
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	325 andw $(~0x0200),%ax # allow only zero divide exceptions
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	326 movl %eax,0(%esp) # put back into memory
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	327 ldmxcsr 0(%esp) # reload
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	328 addl $4,%esp # pop value
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	329 #endif
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	330
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	331 #ifdef CYGHWR_HAL_I386_FPU_SWITCH_LAZY
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	332 # Tell the CPU to generate an FPU unavailable exception
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	333 # when the FPU is first used.
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	334 movl %cr0, %eax
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	335 orl $0x8, %eax
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	336 movl %eax, %cr0
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	337 # Now create an FPU context on the stack so that we can take
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	338 # FPU-using interrupts and exceptions before the kernel starts
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	339 # up.
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	340 subl $i386reg_fpucontext_size,%esp
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	341 movl $0,i386reg_fpucontext_valid(%esp)
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	342 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	343 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	344 movl %esp,0(%ecx,%ebx,4) # save in table[cpu] entry
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	345 #endif
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	346
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	347 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	348
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	349 #ifndef CYGHWR_HAL_I386_FPU_SWITCH_LAZY
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	350
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	351 # Non-lazy CPU state switching. We simply switch the entire
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	352 # FPU state on every context switch, interrupt or exception.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	353
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	354 # ------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	355 # Context switch handling
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	356
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	357 .macro hal_fpu_push_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	358 subl $i386reg_fpstate_size,%esp # make space
200 8147f1c99f15 Merge from eCos master repository on 2001-12-21-06:43:03-GMT jlarmour parents: 191 diff changeset	359 fnsave i386reg_fpstate(%esp) # save FPU state
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	360 #ifdef CYGHWR_HAL_I386_PENTIUM_SSE
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	361 # Save SIMD state.
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	362
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	363 # FIXME. This is awfully inefficient. Need to use FXSAVE to
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	364 # save FPU and SIMD at same time. FXSAVE requires a 16 byte
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	365 # alignment and does not have an implicit finit as does FSAVE.
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	366
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	367 stmxcsr i386reg_simd_mxcsr(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	368 movups %xmm0,i386reg_simd_xmm0(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	369 movups %xmm1,i386reg_simd_xmm1(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	370 movups %xmm2,i386reg_simd_xmm2(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	371 movups %xmm3,i386reg_simd_xmm3(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	372 movups %xmm4,i386reg_simd_xmm4(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	373 movups %xmm5,i386reg_simd_xmm5(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	374 movups %xmm6,i386reg_simd_xmm6(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	375 movups %xmm7,i386reg_simd_xmm7(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	376 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	377 movl $1,i386reg_fpstate_valid(%esp) # indicate it is valid
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	378 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	379
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	380 .macro hal_fpu_pop_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	381 btl $0,i386reg_fpstate_valid(%esp) # check ls bit of valid flag
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	382 jc 1f # if set, restore state
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	383 finit # otherwise init FPU
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	384 #ifdef CYGHWR_HAL_I386_PENTIUM_SSE
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	385 # FIXME. Anything needed here?
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	386 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	387 jmp 2f # and skip restore
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	388 1:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	389 frstor i386reg_fpstate(%esp) # restore FPU state
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	390 #ifdef CYGHWR_HAL_I386_PENTIUM_SSE
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	391 # Restore SIMD state.
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	392
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	393 # FIXME. This is awfully inefficient. Need to use FXRSTOR to
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	394 # restore FPU and SIMD at same time. FXRSTOR requires a 16 byte
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	395 # alignment.
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	396
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	397 movups i386reg_simd_xmm0(%esp),%xmm0
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	398 movups i386reg_simd_xmm1(%esp),%xmm1
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	399 movups i386reg_simd_xmm2(%esp),%xmm2
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	400 movups i386reg_simd_xmm3(%esp),%xmm3
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	401 movups i386reg_simd_xmm4(%esp),%xmm4
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	402 movups i386reg_simd_xmm5(%esp),%xmm5
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	403 movups i386reg_simd_xmm6(%esp),%xmm6
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	404 movups i386reg_simd_xmm7(%esp),%xmm7
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	405 ldmxcsr i386reg_simd_mxcsr(%esp)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	406 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	407 2:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	408 addl $i386reg_fpstate_size,%esp # pop space used
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	409 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	410
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	411 # ------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	412 # Interrupt and exception handling
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	413
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	414 # In this configuration, the interrupt and exception code behaves in
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	415 # exactly the same way as the context switch code.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	416
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	417 .macro hal_fpu_push_int
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	418 hal_fpu_push_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	419 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	420
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	421 .macro hal_fpu_push_int_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	422 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	423
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	424 .macro hal_fpu_pop_int_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	425 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	426
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	427 .macro hal_fpu_pop_int
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	428 hal_fpu_pop_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	429 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	430
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	431 .macro hal_fpu_push_exc
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	432 hal_fpu_push_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	433 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	434
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	435 .macro hal_fpu_push_exc_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	436 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	437
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	438 .macro hal_fpu_pop_exc_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	439 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	440
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	441 .macro hal_fpu_pop_exc
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	442 hal_fpu_pop_ctx
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	443 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	444
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	445 #else // CYGHWR_HAL_I386_FPU_SWITCH_LAZY
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	446
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	447 # Lazy CPU state switching. We defer CPU state switching until the new
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	448 # thread actually uses the FPU. This state switch is handled by
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	449 # __fpu_switch_vsr in vectors.S.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	450
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	451 .extern cyg_hal_fpustate_owner
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	452 .extern cyg_hal_fpustate_current
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	453
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	454 # ------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	455 # Context switch handling
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	456
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	457 # On context switch we simply stack a pointer to this
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	458 # threads FPU context save area.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	459
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	460 .macro hal_fpu_push_ctx
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	461 hal_smp_cpu %ebx # Get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	462 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	463 pushl 0(%ecx,%ebx,4) # push table[cpu] entry
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	464 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	465
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	466 # We do nothing here but set the CR0:TS bit to force
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	467 # an exception when the FPU is next used and pop the
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	468 # FPU save area pointer into the static variable.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	469
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	470 .macro hal_fpu_pop_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	471 movl %cr0, %ecx # get CR0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	472 orl $0x8, %ecx # set TS bit
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	473 movl %ecx, %cr0 # restore CR0
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	474 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	475 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	476 popl 0(%ecx,%ebx,4) # pop table[cpu] entry
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	477 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	478
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	479 # ------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	480 # Interrupt handling
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	481
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	482 # On entry to an interrupt we save the current threads FPU context
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	483 # pointer and set the CR0:TS bit to trap any FP operations in the
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	484 # interrupt.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	485
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	486 .macro hal_fpu_push_int
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	487 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	488 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	489 pushl 0(%ecx,%ebx,4) # push table[cpu] entry
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	490 # ensure that CR0:TS bit is set
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	491 movl %cr0, %ecx # get CR0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	492 orl $0x8, %ecx # set TS bit
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	493 movl %ecx, %cr0 # restore CR0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	494 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	495
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	496 # The following is called after we transfer to the interrupt
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	497 # stack. We make space here for the FPU state of the interrupt
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	498 # handler to be saved in case we get nested interrupts that use FP.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	499
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	500 .macro hal_fpu_push_int_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	501 subl $i386reg_fpucontext_size,%esp
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	502 movl $0,i386reg_fpucontext_valid(%esp)
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	503 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	504 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	505 movl %esp,0(%ecx,%ebx,4) # save in table[cpu] entry
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	506 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	507
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	508 # This is invoked just before any transfer back to the thread stack.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	509 # We check whether we are the FPU state owner, and if so, abdicate.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	510 # There is no need to save the state, the next thread will load its
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	511 # own state over the top of it.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	512
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	513 .macro hal_fpu_pop_int_annex
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	514 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	515 movl $cyg_hal_fpustate_owner,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	516 cmpl 0(%ecx,%ebx,4),%esp # are we FPU owner?
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	517 jne 1f # if not, then just continue
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	518 movl $0,0(%ecx,%ebx,4) # no one owns FPU now
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	519 # ensure that CR0:TS bit is set to force a reload of
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	520 # the previous FPU state
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	521 movl %cr0, %ecx # get CR0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	522 orl $0x8, %ecx # set TS bit
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	523 movl %ecx, %cr0 # restore CR0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	524 1:
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	525 addl $i386reg_fpucontext_size,%esp # pop FPU save area
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	526 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	527
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	528 # Final return from interrupt handling. Just pull the current
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	529 # FPU context off the stack.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	530 .macro hal_fpu_pop_int
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	531 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	532 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	533 popl 0(%ecx,%ebx,4) # pop table[cpu] entry
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	534 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	535
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	536 # ------------------------------------------------------------
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	537 # Exception handling
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	538
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	539 # Whenever we take an exception, we save the current FPU state away
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	540 # into its save area. This way, if we are going to end up in GDB, the
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	541 # whole machine state is saved in memory.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	542
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	543 .macro hal_fpu_push_exc
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	544 hal_smp_cpu %ebx # get CPU id
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	545 movl $cyg_hal_fpustate_current,%ecx # current state table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	546 pushl 0(%ecx,%ebx,4) # push table[cpu] entry
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	547 movl $cyg_hal_fpustate_owner,%ecx # current owner table
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	548 movl 0(%ecx,%ebx,4),%eax # EAX = FPU state owner
171 42f843b391aa Merge from eCos master repository on 2001-07-18-03:13:25-BST jlarmour parents: 161 diff changeset	549 cmpl $0,%eax # test it
42f843b391aa Merge from eCos master repository on 2001-07-18-03:13:25-BST jlarmour parents: 161 diff changeset	550 je 1f # skip if zero
200 8147f1c99f15 Merge from eCos master repository on 2001-12-21-06:43:03-GMT jlarmour parents: 191 diff changeset	551 fnsave i386reg_fpucontext_state(%eax) # save state
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	552 #ifdef CYGHWR_HAL_I386_PENTIUM_SSE
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	553 # Save SIMD state.
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	554
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	555 # FIXME. This is awfully inefficient. Need to use FXSAVE to
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	556 # save FPU and SIMD at same time. FXSAVE requires a 16 byte
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	557 # alignment and does not have an implicit finit as does FSAVE.
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	558
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	559 stmxcsr i386reg_simd_mxcsr(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	560 movups %xmm0,i386reg_simd_xmm0(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	561 movups %xmm1,i386reg_simd_xmm1(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	562 movups %xmm2,i386reg_simd_xmm2(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	563 movups %xmm3,i386reg_simd_xmm3(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	564 movups %xmm4,i386reg_simd_xmm4(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	565 movups %xmm5,i386reg_simd_xmm5(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	566 movups %xmm6,i386reg_simd_xmm6(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	567 movups %xmm7,i386reg_simd_xmm7(%eax)
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 182 diff changeset	568 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	569 movl $1,i386reg_fpucontext_valid(%eax) # set valid
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	570 movl $0,0(%ecx,%ebx,4) # zero owner pointer
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	571 1:
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	572 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	573
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	574 # The rest of the exception macros behave exactly like the
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	575 # interrupt ones.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	576
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	577 .macro hal_fpu_push_exc_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	578 hal_fpu_push_int_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	579 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	580
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	581 .macro hal_fpu_pop_exc_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	582 hal_fpu_pop_int_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	583 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	584
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	585 .macro hal_fpu_pop_exc
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	586 hal_fpu_pop_int
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	587 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	588
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	589 #endif // CYGHWR_HAL_I386_FPU_SWITCH_LAZY
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	590
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	591 #else /* !CYGHWR_HAL_I386_FPU */
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	592
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	593 # Non-FP macros.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	594
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	595 .macro hal_fpu_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	596 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	597
182 f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	598 .macro hal_fpu_cpu_init
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	599 .endm
f62680ef1804 Merge from eCos master repository on 2001-09-07-06:43:02-BST jlarmour parents: 171 diff changeset	600
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	601 .macro hal_fpu_push_ctx
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	602 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	603
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	604 .macro hal_fpu_pop_ctx
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	605 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	606
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	607 .macro hal_fpu_push_int
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	608 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	609
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	610 .macro hal_fpu_push_int_annex
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	611 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	612
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	613 .macro hal_fpu_pop_int_annex
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	614 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	615
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	616 .macro hal_fpu_pop_int
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	617 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	618
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	619 .macro hal_fpu_push_exc
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	620 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	621
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	622 .macro hal_fpu_push_exc_annex
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	623 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	624
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	625 .macro hal_fpu_pop_exc_annex
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	626 .endm
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	627
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	628 .macro hal_fpu_pop_exc
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	629 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	630
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	631 #endif
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	632
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	633 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	634
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	635 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	636 # MMU macros.
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	637
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	638 #ifndef CYGPKG_HAL_I386_MMU_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	639
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	640 #define CYGPKG_HAL_I386_MMU_DEFINED
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	641
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	642 .macro hal_mmu_init
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	643 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	644
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	645 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	646
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	647 #------------------------------------------------------------------------------
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	648 # A20 gate enable
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	649
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	650 #define K_RDWR 0x60
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	651 #define K_STATUS 0x64
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	652 #define K_CMD 0x64
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	653 #define K_OBUF_FUL 0x01
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	654 #define K_IBUF_FUL 0x02
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	655 #define KC_CMD_WIN 0xD0
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	656 #define KC_CMD_WOUT 0xD1
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	657 #define KB_A20 0xDF
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	658
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	659 .macro hal_a20_enable
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	660 // Enable A20 so that addresses at 1MB don't wrap around back to 0.
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	661 1: inb $K_STATUS, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	662 testb $K_IBUF_FUL, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	663 jnz 1b
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	664
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	665 2: inb $K_STATUS, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	666 testb $K_OBUF_FUL, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	667 jz 3f
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	668 inb $K_RDWR, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	669 jmp 2b
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	670
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	671 3: movb $KC_CMD_WOUT, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	672 outb %al, $K_CMD
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	673 1: inb $K_STATUS, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	674 testb $K_IBUF_FUL, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	675 jnz 1b
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	676
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	677 movb $KB_A20, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	678 outb %al, $K_RDWR
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	679 1: inb $K_STATUS, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	680 testb $K_IBUF_FUL, %al
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	681 jnz 1b
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	682 .endm
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	683
ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	684 #------------------------------------------------------------------------------
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	685 # MEMC macros.
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	686 # This version simply enables the A20 gate.
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	687
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	688 #ifndef CYGPKG_HAL_I386_MEMC_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	689
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	690 .macro hal_memc_init
161 ac086aa3217e Merge from eCos master repository on 2001-06-08-21:11:51-BST jlarmour parents: 72 diff changeset	691 hal_a20_enable
72 da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	692 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	693
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	694 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	695
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	696 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	697 # Cache macros.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	698
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	699 #ifndef CYGPKG_HAL_I386_CACHE_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	700
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	701 .macro hal_cache_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	702 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	703
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	704 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	705
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	706 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	707 # Diagnostics macros.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	708
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	709 #ifndef CYGPKG_HAL_I386_DIAG_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	710
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	711 .macro hal_diag_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	712 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	713
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	714 .macro hal_diag_excpt_start
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	715 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	716
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	717 .macro hal_diag_intr_start
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	718 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	719
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	720 .macro hal_diag_restore
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	721 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	722 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	723
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	724 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	725 # Timer initialization.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	726
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	727 #ifndef CYGPKG_HAL_I386_TIMER_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	728
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	729 .macro hal_timer_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	730 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	731
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	732 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	733
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	734 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	735 # Monitor initialization.
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	736
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	737 #ifndef CYGPKG_HAL_I386_MON_DEFINED
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	738
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	739 .macro hal_mon_init
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	740 .endm
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	741
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	742 #endif
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	743
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	744 #------------------------------------------------------------------------------
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	745 #endif // ifndef CYGONCE_HAL_ARCH_INC
da3908c9cd10 Merge from eCos master repository on 2000-02-17-18:56:14-GMT jlarmour parents: diff changeset	746 # end of arch.inc

Mercurial > ecos

annotate packages/hal/i386/arch/current/include/arch.inc @ 208:e0c0827131d1 ecos