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comparison packages/hal/powerpc/cogent/current/src/cogent.ld @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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-1:000000000000 0:3111d98ba7b3
1 /*==========================================================================
2 //
3 // cogent.ld
4 //
5 // Linker script for Cogent/MPC860 board
6 //
7 //==========================================================================
8 //####COPYRIGHTBEGIN####
9 //
10 // -------------------------------------------
11 // The contents of this file are subject to the Cygnus eCos Public License
12 // Version 1.0 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at
14 // http://sourceware.cygnus.com/ecos
15 //
16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under
19 // the License.
20 //
21 // The Original Code is eCos - Embedded Cygnus Operating System, released
22 // September 30, 1998.
23 //
24 // The Initial Developer of the Original Code is Cygnus. Portions created
25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
26 // -------------------------------------------
27 //
28 //####COPYRIGHTEND####
29 //==========================================================================
30 //#####DESCRIPTIONBEGIN####
31 //
32 // Author(s): nickg
33 // Contributors:nickg
34 // Date: 1998-02-17
35 // Purpose: Cogent Linker script
36 // Description: This script is passed to the linker to define the memory
37 // of the Cogent/MPC860 board.
38 //
39 //####DESCRIPTIONEND####
40 //
41 //========================================================================*/
42 STARTUP(vectors.o)
43 ENTRY(reset_vector)
44
45 GROUP(libtarget.a libgcc.a)
46
47 #include <pkgconf/hal.h>
48
49 #ifdef CYG_HAL_STARTUP_ROM
50 #define LOAD_BASE 0xFFF00000
51 #define DATA_BASE 0x00780000 // Data at top of memory so GDB
52 // doesn't trash ROM state while
53 // downloading programs.
54 #endif
55 #ifdef CYG_HAL_STARTUP_RAM
56 #define LOAD_BASE 0x00000000
57 #define DATA_BASE
58 #endif
59
60 // Alignment of sections must be equal to or bigger than the alignment
61 // requested by gcc (use 'objdump -h' to see these).
62
63 SECTIONS
64 {
65
66 /* Start of ROM */
67 . = LOAD_BASE;
68
69 .rom_vectors :
70 {
71 KEEP(*(.vectors))
72 }
73
74 /*------------------------------------------------------------*/
75
76 .text :
77 {
78 _stext = .;
79 *(.text*)
80 *(.gnu.warning)
81 *(.gnu.linkonce*)
82 *(.init)
83 }
84
85 _etext = .;
86 PROVIDE (etext = .);
87 .fini : { *(.fini) }
88 .rodata1 : { *(.rodata1) }
89 .rodata : { *(.rodata*) }
90 .fixup : { *(.fixup) }
91 .gcc_except_table : { *(.gcc_except_table) }
92
93 // __rom_data_start = __rom_ram_vectors_start + SIZEOF( .ram_vectors );
94 __rom_data_start = ALIGN(8);
95 .data DATA_BASE :
96 AT( __rom_data_start )
97 {
98 __ram_data_start = .;
99 *(.data*)
100 __GOT1_START__ = .;
101 *(.got1)
102 __GOT1_END__ = .;
103 /* Put .ctors and .dtors next to the .got2 section, so that the pointers
104 get relocated with -mrelocatable. */
105 #ifdef CYG_KERNEL_USE_INIT_PRIORITY
106 . = ALIGN(8);
107 __CTOR_LIST__ = .;
108 KEEP(*(SORT(.ctors*)))
109 __CTOR_END__ = .;
110 __DTOR_LIST__ = .;
111 KEEP(*(SORT(.dtors*)))
112 __DTOR_END__ = .;
113 #else
114 __CTOR_LIST__ = .;
115 *sched.o(.ctors*)
116 *clock.o(.ctors*)
117 *thread.o(.ctors*)
118 *(.ctors*)
119 __CTOR_END__ = .;
120 __DTOR_LIST__ = .;
121 *(.dtors)
122 __DTOR_END__ = .;
123 #endif
124 __GOT2_START__ = .;
125 *(.got2)
126 __GOT2_END__ = .;
127 __GOT_START__ = .;
128 _GLOBAL_OFFSET_TABLE_ = . + 32768;
129 _SDA_BASE_ = .;
130 *(.got.plt)
131 *(.got)
132 __GOT_END__ = .;
133 *(.dynamic)
134 // We want the small data sections together, so single-instruction offsets
135 // can access them all, and initialized data all before uninitialized, so
136 // we can shorten the on-disk segment size.
137 __SDATA_START__ = .;
138 *(.sdata)
139 __SDATA2_START__ = .;
140 *(.sdata2)
141 }
142 __ram_data_end = .;
143 PROVIDE( __ram_data_end = .);
144 _edata = .;
145 PROVIDE (edata = .);
146 . = ALIGN(4);
147 __bss_start = .;
148 .sbss :
149 {
150 __SBSS_START__ = .;
151 *(.sbss)
152 __SBSS_END__ = .;
153 __SBSS2_START__ = .;
154 *(.sbss2)
155 __SBSS2_END__ = .;
156 *(.scommon)
157 }
158 . = ALIGN(8);
159 .bss :
160 {
161 *(.scommon)
162 *(.dynbss)
163 *(.bss)
164 *(COMMON)
165 }
166 . = ALIGN(4);
167 _end = . ;
168 PROVIDE (end = .);
169
170 }