source: rtems/c/src/lib/libbsp/m68k/uC5282/startup/linkcmds @ 518edef

4.104.114.84.95
Last change on this file since 518edef was 572484f, checked in by Eric Norum <WENorum@…>, on Jan 28, 2005 at 7:35:23 PM

New BSP for Arcturus uCDIMM ColdFire? 5282.

  • Property mode set to 100644
File size: 5.7 KB
Line 
1/*
2 *  This file contains directives for the GNU linker which are specific
3 *  to the Arcturus uC DIMM ColdFire 5282
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 : 16M ;
20_HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0 ;
21
22/*
23 * Location of downloaded (from TFTP or flash) file
24 */
25_DownloadLocation = 0x40000;
26
27/*
28 * System clock speed
29 */
30_CPUClockSpeed = DEFINED(_CPUClockSpeed) ? _CPUClockSpeed : 64000000 ;
31
32/*
33 * Location of on-chip devices
34 */
35__IPSBAR = DEFINED(__IPSBAR) ? __IPSBAR : 0x40000000 ;
36__SRAMBASE = DEFINED(__SRAMBASE) ? __SRAMBASE : 0x20000000 ;
37
38ENTRY(start)
39MEMORY
40{
41    ram : ORIGIN = 0, LENGTH = 16M
42    sram : ORIGIN = 0x20000000, LENGTH = 64k
43}
44
45SECTIONS
46{
47   
48    _header_offset = 0;
49   
50    /*
51     * Text, data and bss segments
52     */
53    .text _DownloadLocation : {
54       
55       *(.text)
56        *(.ram_code)
57
58        /*
59         * C++ constructors/destructors
60         */
61        *(.gnu.linkonce.t.*)
62
63        /*
64         * Initialization and finalization code.
65              *
66              * Various files can provide initialization and finalization
67         * functions.  crtbegin.o and crtend.o are two instances. The
68         * body of these functions are in .init and .fini sections. We
69         * accumulate the bodies here, and prepend function prologues
70         * from crti.o and function epilogues from crtn.o. crti.o must
71         * be linked first; crtn.o must be linked last.  Because these
72         * are wildcards, it doesn't matter if the user does not
73         * actually link against crti.o and crtn.o; the linker won't
74         * look for a file to match a wildcard.  The wildcard also
75         * means that it doesn't matter which directory crti.o and
76         * crtn.o are in.
77         */
78        PROVIDE (_init = .);
79        *crti.o(.init)
80        *(.init)
81        *crtn.o(.init)
82        PROVIDE (_fini = .);
83        *crti.o(.fini)
84        *(.fini)
85        *crtn.o(.fini)
86
87        /*
88         * Special FreeBSD sysctl sections.
89         */
90        . = ALIGN (16);
91        __start_set_sysctl_set = .;
92        *(set_sysctl_*);
93        __stop_set_sysctl_set = ABSOLUTE(.);
94        *(set_domain_*);
95        *(set_pseudo_*);
96
97
98        /*
99         * C++ constructors/destructors
100         *
101         * gcc uses crtbegin.o to find the start of the constructors
102         * and destructors so we make sure it is first.  Because this
103         * is a wildcard, it doesn't matter if the user does not
104         * actually link against crtbegin.o; the linker won't look for
105         * a file to match a wildcard.  The wildcard also means that
106         * it doesn't matter which directory crtbegin.o is in. The
107         * constructor and destructor list are terminated in
108         * crtend.o.  The same comments apply to it.
109         */
110        . = ALIGN (16);
111        *crtbegin.o(.ctors)
112        *(.ctors)
113        *crtend.o(.ctors)
114        *crtbegin.o(.dtors)
115        *(.dtors)
116        *crtend.o(.dtors)
117
118        /*
119         * Exception frame info
120         */
121        . = ALIGN (16);
122        *(.eh_frame)
123
124        /*
125         * Read-only data
126         */
127        . = ALIGN (16);
128        _rodata_start = . ;
129        *(.rodata*)
130        *(.gnu.linkonce.r*)
131       
132        . = ALIGN (16);
133
134        *(.console_gdb_xfer)
135        *(.bootstrap_data)
136        . = ALIGN(16);
137        _estuff = .;
138    PROVIDE (_etext = .);
139    } >ram
140       
141        .data : {
142            PROVIDE( _data_dest_start = . );
143            PROVIDE( _copy_start = .);
144            *(.data)
145            *(.gnu.linkonce.d*)
146            *(.gcc_except_table)
147            *(.jcr)
148            . = ALIGN (16);
149            PROVIDE (_edata = .);
150        PROVIDE (_copy_end = .);
151        PROVIDE (_data_dest_end = . );
152        } >ram
153
154        _data_src_start = LOADADDR(.data);
155        _data_src_end = _data_src_start + SIZEOF(.data);       
156       
157        .bss : {
158                _clear_start = .;
159                *(.bss)
160                *(COMMON)
161                . = ALIGN (16);
162                PROVIDE (end = .);
163                _clear_end = .;
164
165                _WorkspaceBase = .;
166        } >ram
167  /* Stabs debugging sections.  */
168  .stab 0 : { *(.stab) }
169  .stabstr 0 : { *(.stabstr) }
170  .stab.excl 0 : { *(.stab.excl) }
171  .stab.exclstr 0 : { *(.stab.exclstr) }
172  .stab.index 0 : { *(.stab.index) }
173  .stab.indexstr 0 : { *(.stab.indexstr) }
174  .comment 0 : { *(.comment) }
175
176  /* DWARF debug sections.
177     Symbols in the DWARF debugging sections are relative to the beginning
178     of the section so we begin them at 0.  */
179  /* DWARF 1 */
180  .debug          0 : { *(.debug) }
181  .line           0 : { *(.line) }
182 
183  /* GNU DWARF 1 extensions */
184  .debug_srcinfo  0 : { *(.debug_srcinfo) }
185  .debug_sfnames  0 : { *(.debug_sfnames) }
186 
187  /* DWARF 1.1 and DWARF 2 */
188  .debug_aranges  0 : { *(.debug_aranges) }
189  .debug_pubnames 0 : { *(.debug_pubnames) }
190 
191  /* DWARF 2 */
192  .debug_info     0 : { *(.debug_info) }
193  .debug_abbrev   0 : { *(.debug_abbrev) }
194  .debug_line     0 : { *(.debug_line) }
195  .debug_frame    0 : { *(.debug_frame) }
196  .debug_str      0 : { *(.debug_str) }
197  .debug_loc      0 : { *(.debug_loc) }
198  .debug_macinfo  0 : { *(.debug_macinfo) }
199 
200  /* SGI/MIPS DWARF 2 extensions */
201  .debug_weaknames 0 : { *(.debug_weaknames) }
202  .debug_funcnames 0 : { *(.debug_funcnames) }
203  .debug_typenames 0 : { *(.debug_typenames) }
204  .debug_varnames  0 : { *(.debug_varnames) }
205  /* These must appear regardless of  .  */
206
207PROVIDE (end_of_all = .); 
208}
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