source: rtems/c/src/lib/libbsp/m68k/mvme136/startup/linkcmds @ 35ff211

Last change on this file since 35ff211 was 35ff211, checked in by Joel Sherrill <joel.sherrill@…>, on 04/05/00 at 19:09:06

Now all m68k BSPs specify _RamBase. This is necessary for the shared
m68kbsppretaskinghook.c to work.
  • Property mode set to 100644
File size: 3.2 KB
Line 
1/*
2 *  This file contains directives for the GNU linker which are specific
3 *  to the Motorola MVME136/MVME135 boards.
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.OARcorp.com/rtems/license.html.
11 *
12 *  $Id$
13 */
14
15/*
16 * Declare some sizes.
17 */
18_RamBase = DEFINED(_RamBase) ? _RamBase : 0x0;
19_RamSize = DEFINED(_RamSize) ? _RamSize : 1M;
20_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x10000;
21_StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000;
22
23MEMORY
24{
25        ram : org = 0x0, l = 1M
26}
27
28SECTIONS
29{
30        ram : {
31                . = 0x3000;
32        } >ram
33
34        /*
35         * Text, data and bss segments
36         */
37        .text : {
38                *(.text)
39
40                /*
41                 * C++ constructors/destructors
42                 *
43                 * Various files can provide initialization and finalization
44                 * functions.  crtbegin.o and crtend.o are two instances. The
45                 * body of these functions are in .init and .fini sections. We
46                 * accumulate the bodies here, and prepend function prologues
47                 * from crti.o and function epilogues from crtn.o. crti.o must
48                 * be linked first; crtn.o must be linked last.  Because these
49                 * are wildcards, it doesn't matter if the user does not
50                 * actually link against crti.o and crtn.o; the linker won't
51                 * look for a file to match a wildcard.  The wildcard also
52                 * means that it doesn't matter which directory crti.o and
53                 * crtn.o are in.
54                 */
55                *(.gnu.linkonce.t.*)
56
57                /*
58                 * Initialization and finalization code.
59                 *
60                 * gcc uses crtbegin.o to find the start of the constructors
61                 * and destructors so we make sure it is first.  Because this
62                 * is a wildcard, it doesn't matter if the user does not
63                 * actually link against crtbegin.o; the linker won't look for
64                 * a file to match a wildcard.  The wildcard also means that
65                 * it doesn't matter which directory crtbegin.o is in. The
66                 * constructor and destructor list are terminated in
67                 * crtend.o.  The same comments apply to it.
68                 */
69                PROVIDE (_init = .);
70                *crti.o(.init)
71                *(.init)
72                *crtn.o(.init)
73                PROVIDE (_fini = .);
74                *crti.o(.fini)
75                *(.fini)
76                *crtn.o(.fini)
77
78                /*
79                 * C++ constructors/destructors
80                 */
81                . = ALIGN (16);
82                *crtbegin.o(.ctors)
83                *(.ctors)
84                *crtend.o(.ctors)
85                *crtbegin.o(.dtors)
86                *(.dtors)
87                *crtend.o(.dtors)
88
89                /*
90                 * Exception frame info
91                 */
92                . = ALIGN (16);
93                *(.eh_frame)
94
95                /*
96                 * Read-only data
97                 */
98                . = ALIGN (16);
99                _rodata_start = . ;
100                *(.rodata)
101                *(.gnu.linkonce.r*)
102
103                 . = ALIGN (16);
104                PROVIDE (_etext = .);
105        } >ram
106        .data : {
107                PROVIDE (_copy_start = .);
108                *(.data)
109                *(.gnu.linkonce.d*)
110                *(.gcc_except_table)
111                . = ALIGN (16);
112                PROVIDE (_edata = .);
113                PROVIDE (_copy_end = .);
114        } >ram
115        .bss : {
116                _clear_start = .;
117                *(.bss)
118                *(COMMON)
119                . = ALIGN (16);
120                PROVIDE (end = .);
121
122                . += _StackSize;
123                . = ALIGN (16);
124                _stack_init = .;
125                _clear_end = .;
126
127                _WorkspaceBase = .;
128        } >ram
129}
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