source: trunk/libs/newlib/src/libgloss/sparc/elfsim.ld @ 546

Last change on this file since 546 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 5.1 KB
Line 
1/* Linker script for running ELF programs in the Sparc simulator */
2
3/* OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparcle") */
4/* OUTPUT_FORMAT("elf32-sparc") */
5OUTPUT_ARCH(sparc)
6STARTUP(traps.o)
7INPUT(erc32-crt0.o)
8ENTRY(_trap_table)
9GROUP(-lc -lerc32 -lgcc)  /*  -lerc32 used to be -lsim */
10
11SEARCH_DIR(.)
12/* Do we need any of these for elf?
13   __DYNAMIC = 0;    */
14
15/*
16 * The memory map looks like this:
17 * +--------------------+ <- low memory
18 * | .text              |
19 * |        _stext       |
20 * |        _etext      |
21 * |        ctor list   | the ctor and dtor lists are for
22 * |        dtor list   | C++ support
23 * |        _end_text   |
24 * +--------------------+
25 * | .data              | initialized data goes here
26 * |        _sdata      |
27 * |        _edata      |
28 * +--------------------+
29 * | .bss               |
30 * |        __bss_start | start of bss, cleared by crt0
31 * |        _end        | start of heap, used by sbrk()
32 * +--------------------+
33 * |    heap space      |
34 * |        _ENDHEAP    |
35 * |    stack space     |
36 * |        __stack     | top of stack
37 * +--------------------+ <- high memory
38 */
39
40/*
41 * User modifiable values:
42 *
43 * _CLOCK_SPEED               in Mhz (used to program the counter/timers)
44 *
45 * _PROM_SIZE                 size of PROM (permissible values are 4K, 8K, 16K
46 *                               32K, 64K, 128K, 256K, and 512K)
47 * _RAM_SIZE                  size of RAM (permissible values are 256K, 512K,
48 *                               1MB, 2Mb, 4Mb, 8Mb, 16Mb, and 32Mb)
49 *
50 * These symbols are only used in assembler code, so they only need to
51 * be listed once. They should always be refered to without SYM().
52 */
53
54_CLOCK_SPEED = 10;
55
56_PROM_SIZE = 4M;
57_RAM_SIZE = 256K;
58
59_RAM_START = 0x02000000;
60_RAM_END = _RAM_START + _RAM_SIZE;
61_STACK_SIZE = (16 * 1024);
62_PROM_START = 0x00000000;
63_PROM_END = _PROM_START + _PROM_SIZE;
64
65
66/*
67 *  Base address of the on-CPU peripherals
68 */
69
70_ERC32_MEC = 0x01f80000;
71
72/*
73 * Setup the memory map for the SIS simulator.
74 * stack grows up towards low memory.
75 */
76
77MEMORY
78{
79  rom       : ORIGIN = 0x00000000, LENGTH = 4M
80  ram (rwx) : ORIGIN = 0x02000000, LENGTH = 2M
81}
82
83__stack = _RAM_START + _RAM_SIZE - 4 * 16;
84__trap_stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE;
85
86/*
87 * All the symbols that might be accessed from C code need to be
88 * listed twice, once with an additional underscore. aout format needs
89 * and extra underscore, whereas coff & elf doesn't. This is to work
90 * with both.
91 */
92SECTIONS
93{
94  .text      :
95  {
96    _stext = .;
97    PROVIDE (stext = .);
98    *(.text)
99    _etext = .;
100    PROVIDE (etext = .);
101
102    /* For a.out.  */
103    CONSTRUCTORS
104
105    /* For ELF.  */
106    __CTOR_LIST__ = .;
107    LONG(-1)
108    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
109    KEEP (*(SORT(.ctors.*)))
110    KEEP (*crtend.o(.ctors))
111    LONG(0)                                                   
112    __CTOR_END__ = .;
113    __DTOR_LIST__ = .;
114    LONG(-1)
115    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
116    KEEP (*(SORT(.dtors.*)))
117    KEEP (*crtend.o(.dtors))
118    LONG(0)             
119    __DTOR_END__ = .;
120
121    *(.init)
122    *(.lit)
123    *(.rodata)
124    *(.shdata)
125    __EH_FRAME_BEGIN__ = .;
126    *(.eh_frame)
127    *(.gnu.linkonce.t*)
128    *(.gnu.linkonce.r*)
129    *(.gcc_except_table)
130    *(.fini)
131
132    _endtext = .;
133    PROVIDE(endtext = .);
134  } > ram
135
136  .shbss SIZEOF(.text) + ADDR(.text) :
137  {
138    *(.shbss)   
139  }
140
141  .talias : { }  > ram
142
143  .data    :
144  {
145    _sdata  =  .;
146    PROVIDE (sdata  =  .);
147    *(.data)
148    *(.data.*)
149    *(.gnu.linkonce.d*)
150    _edata  =  .;
151    PROVIDE (edata  =  .);
152  } > ram
153
154  .bss SIZEOF(.data) + ADDR(.data) :
155  {
156    _sbss = . ;
157    PROVIDE (sbss = . );
158    __bss_start = ALIGN(0x8);
159    *(.bss)
160    *(COMMON)
161    _ebss = .;
162    PROVIDE (ebss = .);
163    _end = ALIGN(0x8);   
164    __end = ALIGN(0x8);
165    PROVIDE (end = ALIGN(0x8));
166  }
167
168  /* Stabs debugging sections.  */
169  .stab 0 : { *(.stab) }
170  .stabstr 0 : { *(.stabstr) }
171  .stab.excl 0 : { *(.stab.excl) }
172  .stab.exclstr 0 : { *(.stab.exclstr) }
173  .stab.index 0 : { *(.stab.index) }
174  .stab.indexstr 0 : { *(.stab.indexstr) }
175  .comment 0 : { *(.comment) }
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  /* GNU DWARF 1 extensions */
183  .debug_srcinfo  0 : { *(.debug_srcinfo) }
184  .debug_sfnames  0 : { *(.debug_sfnames) }
185  /* DWARF 1.1 and DWARF 2 */
186  .debug_aranges  0 : { *(.debug_aranges) }
187  .debug_pubnames 0 : { *(.debug_pubnames) }
188  /* DWARF 2 */
189  .debug_info     0 : { *(.debug_info) }
190  .debug_abbrev   0 : { *(.debug_abbrev) }
191  .debug_line     0 : { *(.debug_line) }
192  .debug_frame    0 : { *(.debug_frame) }
193  .debug_str      0 : { *(.debug_str) }
194  .debug_loc      0 : { *(.debug_loc) }
195  .debug_macinfo  0 : { *(.debug_macinfo) }
196  .debug_ranges   0 : { *(.debug_ranges) }
197  /* SGI/MIPS DWARF 2 extensions */
198  .debug_weaknames 0 : { *(.debug_weaknames) }
199  .debug_funcnames 0 : { *(.debug_funcnames) }
200  .debug_typenames 0 : { *(.debug_typenames) }
201  .debug_varnames  0 : { *(.debug_varnames) }
202  /* These must appear regardless of  .  */
203}
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