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comparison packages/hal/sh/edk/current/include/platform.inc @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
parents
children 6736c52df507
comparison
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75:41bf073c0c32 76:435cced73e2f
1 #ifndef CYGONCE_HAL_PLATFORM_INC
2 #define CYGONCE_HAL_PLATFORM_INC
3 ##=============================================================================
4 ##
5 ## platform.inc
6 ##
7 ## SH/EDK7708 board assembler header file
8 ##
9 ##=============================================================================
10 #####COPYRIGHTBEGIN####
11 #
12 # -------------------------------------------
13 # The contents of this file are subject to the Red Hat eCos Public License
14 # Version 1.0 (the "License"); you may not use this file except in
15 # compliance with the License. You may obtain a copy of the License at
16 # http://sourceware.cygnus.com/ecos
17 #
18 # Software distributed under the License is distributed on an
19 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
20 # License for the specific language governing rights and limitations under
21 # the License.
22 #
23 # The Original Code is eCos - Embedded Configurable Operating System,
24 # released September 30, 1998.
25 #
26 # The Initial Developer of the Original Code is Red Hat.
27 # Portions created by Red Hat are
28 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
29 # All Rights Reserved.
30 # -------------------------------------------
31 #
32 #####COPYRIGHTEND####
33 ##=============================================================================
34 #######DESCRIPTIONBEGIN####
35 ##
36 ## Author(s): jskov
37 ## Contributors:jskov
38 ## Date: 2000-02-02
39 ## Purpose: SH/EDK7708 board definitions.
40 ## Description: This file contains various definitions and macros that are
41 ## useful for writing assembly code for the SH/EDK7708 board.
42 ## Usage:
43 ## #include <cyg/hal/platform.inc>
44 ## ...
45 ##
46 ##
47 ######DESCRIPTIONEND####
48 ##
49 ##=============================================================================
50
51 #include <pkgconf/hal.h>
52
53 #include <cyg/hal/sh_offsets.inc>
54
55 #------------------------------------------------------------------------------
56 # Monitor initialization.
57
58 #ifndef CYGPKG_HAL_SH_MON_DEFINED
59
60 #if defined(CYG_HAL_STARTUP_ROM) || \
61 ( defined(CYG_HAL_STARTUP_RAM) && \
62 !defined(CYGSEM_HAL_USE_ROM_MONITOR))
63
64 # If we are starting up from ROM, or we are starting in
65 # RAM and NOT using a ROM monitor, initialize the VSR table.
66
67 .macro hal_mon_init
68 mov.l $_hal_vsr_table_p,r3
69 # Write exception vectors
70 mov.l $_cyg_hal_default_exception_vsr_p,r4
71 mov #CYGNUM_HAL_VSR_EXCEPTION_COUNT,r5
72 1: mov.l r4,@r3
73 add #4,r3
74 dt r5
75 bf 1b
76 # Write interrupt vector
77 mov.l $_cyg_hal_default_interrupt_vsr_p,r4
78 mov.l r4,@r3
79 bra 2f
80 nop
81 .align 2
82
83 $_cyg_hal_default_exception_vsr_p:
84 .long _cyg_hal_default_exception_vsr
85 $_cyg_hal_default_interrupt_vsr_p:
86 .long _cyg_hal_default_interrupt_vsr
87
88 .extern _hal_vsr_table
89 $_hal_vsr_table_p:
90 .long _hal_vsr_table
91
92 2:
93 .endm
94
95 #elif defined(CYG_HAL_STARTUP_RAM) && defined(CYGSEM_HAL_USE_ROM_MONITOR)
96
97 # Initialize the VSR table entries
98 # We only take control of the interrupt vector,
99 # the rest are left to the ROM for now...
100
101 .macro hal_mon_init
102 # Write interrupt vector
103 mov.l $_hal_vsr_table_p,r3
104 mov.l $_cyg_hal_default_interrupt_vsr_p,r4
105 mov.l r4,@r3
106 bra 2f
107 nop
108 .align 2
109
110 $_cyg_hal_default_interrupt_vsr_p:
111 .long _cyg_hal_default_interrupt_vsr
112
113 .extern _hal_vsr_table
114 $_hal_vsr_table_p:
115 .long _hal_vsr_table+CYGNUM_HAL_VECTOR_INTERRUPT*4
116
117 2:
118 .endm
119
120 #else
121
122 .macro hal_mon_init
123 .endm
124
125 #endif
126
127
128 #define CYGPKG_HAL_SH_MON_DEFINED
129
130 #endif // CYGPKG_HAL_SH_MON_DEFINED
131
132 #endif // CYGONCE_HAL_PLATFORM_INC