source: trunk/libs/newlib/src/libgloss/sparc/cygmon.ld.src @ 688

Last change on this file since 688 was 444, checked in by satin@…, 6 years ago

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

File size: 4.3 KB
Line 
1/*
2 *uncomment this if you want the linker to output srecords.
3OUTPUT_FORMAT(srec)
4 *
5 */
6ENTRY(start)
7OUTPUT_ARCH(TARGET_OBJ_FORMAT)
8SEARCH_DIR(.)
9STARTUP(cygmon-crt0.o)
10GROUP(cygmon-salib.o -lc -lgcc -lc)
11
12/*
13 * The memory map looks like this:
14 * +--------------------+ <- low memory
15 * | .text              |
16 * |        _stext      |
17 * |        _etext      |
18 * |        ctor list   | the ctor and dtor lists are for
19 * |        dtor list   | C++ support
20 * |        _end_text   |
21 * +--------------------+
22 * | .data              | initialized data goes here
23 * |        _sdata      |
24 * |        _edata      |
25 * +--------------------+
26 * | .bss               |
27 * |        __bss_start | start of bss, cleared by crt0
28 * |        _end        | start of heap, used by sbrk()
29 * +--------------------+
30 * |    heap space      |
31 * |        _ENDHEAP    |
32 * |    stack space     |
33 * |        __stack     | top of stack
34 * +--------------------+ <- high memory
35 */
36
37_STACK_SIZE = (16 * 1024);
38_RAM_SIZE = 1M;
39_RAM_START = TARGET_RAM_START;
40_RAM_END = _RAM_START + _RAM_SIZE;
41
42/*
43 * Setup the standard memory map. The stack grows down towards low memory.
44 */
45MEMORY
46{
47  ram     : ORIGIN = TARGET_RAM_START, LENGTH = 1M
48}
49
50__stack = (_RAM_START + _RAM_SIZE - 4 * 16) - _STACK_SIZE;
51
52/*
53 * All the symbols that might be accessed from C code need to be
54 * listed twice, once with an additional underscore. aout format needs
55 * and extra underscore, whereas coff & elf doesn't. This is to work
56 * with both.
57 */
58/*
59 * Initalize some symbols to be zero so we can reference them in the
60 * crt0 without core dumping. These functions are all optional, but
61 * we do this so we can have our crt0 always use them if they exist.
62 * This is so BSPs work better when using the crt0 installed with gcc.
63 * We have to initalize them twice, so we cover a.out (which prepends
64 * an underscore) and coff object file formats.
65 */
66PROVIDE (hardware_init_hook = 0);
67PROVIDE (_hardware_init_hook = 0);
68PROVIDE (software_init_hook = 0);
69PROVIDE (_software_init_hook = 0);
70SECTIONS
71{
72  .text : {
73    stext = .;
74    _stext = .;
75    CREATE_OBJECT_SYMBOLS
76    *(.text)
77     __CTOR_LIST__ = .;
78    LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
79    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
80    KEEP (*(SORT(.ctors.*)))
81    KEEP (*crtend.o(.ctors))
82    LONG(0)
83    __CTOR_END__ = .;
84    __DTOR_LIST__ = .;
85    LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
86    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
87    KEEP (*(SORT(.dtors.*)))
88    KEEP (*crtend.o(.dtors))
89     LONG(0)
90    __DTOR_END__ = .;
91    *(.init)
92    *(.lit)
93    *(.rodata)
94    *(.rodata.*)
95    *(.shdata)
96    *(.eh_frame)
97    *(.gnu.linkonce.t*)
98    *(.gnu.linkonce.r*)
99    *(.gcc_except_table)
100    *(.fini)
101    _etext  =  .;
102  }  > ram
103  .shbss SIZEOF(.text) + ADDR(.text) :  {
104    *(.shbss)
105  }
106  .talias : { }  > ram
107  .data  : {
108    sdata  =  .;
109    _sdata  =  .;
110    *(.data)
111    *(.gnu.linkonce.d*)
112    edata  =  .;
113    _edata  =  .;
114  } > ram
115  .bss SIZEOF(.data) + ADDR(.data) : {
116   sbss = . ;
117   _sbss = . ;
118   __bss_start = ALIGN(0x8);
119   __bss_start = ALIGN(0x8);
120   *(.bss)
121   *(COMMON)
122     end = ALIGN(0x8);
123     _end = ALIGN(0x8);
124     __end = ALIGN(0x8);
125     ebss = .;
126     _ebss = .;
127  }
128  .mstack  : { }  > ram
129  .rstack  : { }  > ram
130  .stab  0 (NOLOAD) : {
131    [ .stab ]
132  }
133  .stabstr  0 (NOLOAD) :
134  {
135    [ .stabstr ]
136  }
137/* DWARF debug sections.
138   Symbols in the DWARF debugging sections are relative to the beginning
139   of the section so we begin them at 0.  */
140/* DWARF 1 */
141  .debug    0 (NOLOAD) :
142  {
143    [ .debug ]
144  }
145  .line     0 (NOLOAD) :
146  {
147    [ .line ]
148  }
149/* GNU DWARF 1 extensions */
150  .debug_srcinfo 0 (NOLOAD) :
151  {
152    [ .debug_srcinfo ]
153  }
154  .debug_sfnames  0 (NOLOAD) :
155  {
156    [ .debug_sfnames ]
157  }
158/* DWARF 1.1 and DWARF 2 */
159  .debug_aranges  0 (NOLOAD) :
160  {
161    [ .debug_aranges ]
162  }
163  .debug_pubnames 0 (NOLOAD) :
164  {
165    [ .debug_pubnames ]
166  }
167/* DWARF 2 */
168  .debug_info     0 (NOLOAD) :
169  {
170    [ .debug_info ]
171  }
172  .debug_abbrev   0 (NOLOAD) :
173  {
174    [ .debug_abbrev ]
175  }
176  .debug_line     0 (NOLOAD) :
177  {
178    [ .debug_line ]
179  }
180  .debug_frame    0 (NOLOAD) :
181  {
182    [ .debug_frame ]
183  }
184  .debug_str      0 (NOLOAD) :
185  {
186    [ .debug_str ]
187  }
188  .debug_loc      0 (NOLOAD) :
189  {
190    [ .debug_loc ]
191  }
192  .debug_macinfo  0 (NOLOAD) :
193  {
194    [ .debug_macinfo ]
195  }
196}
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