source: trunk/libs/newlib/src/libgloss/m68k/bcc.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: 2.8 KB
Line 
1STARTUP(crt0.o)
2OUTPUT_ARCH(m68k)
3/* Uncomment this if you want srecords. This is needed for a.out
4 * if you plan to use GDB.
5OUTPUT_FORMAT(srec)
6 */
7SEARCH_DIR(.)
8GROUP(-lbcc -lc -lgcc)
9__DYNAMIC  =  0;
10
11/*
12 * Setup the memory map of the M68332BCC Business Card Computer.
13 * stack grows down from high memory.
14 *
15 * The memory map look like this:
16 * +--------------------+ <- low memory
17 * | .text              |
18 * |        _etext      |
19 * |        ctor list   | the ctor and dtor lists are for
20 * |        dtor list   | C++ support
21 * +--------------------+
22 * | .data              | initialized data goes here
23 * |        _edata      |
24 * +--------------------+
25 * | .bss               |
26 * |        __bss_start | start of bss, cleared by crt0
27 * |        _end        | start of heap, used by sbrk()
28 * +--------------------+
29 * .                    .
30 * .                    .
31 * .                    .
32 * |        __stack     | top of stack
33 * +--------------------+
34 */
35MEMORY
36{
37  ram (rwx) : ORIGIN = 0x3000, LENGTH = 0xd000
38}
39
40/*
41 * allocate the stack to be at the top of memory, since the stack
42 * grows down
43 */
44
45PROVIDE (__stack = 0xd000);
46
47/*
48 * Initalize some symbols to be zero so we can reference them in the
49 * crt0 without core dumping. These functions are all optional, but
50 * we do this so we can have our crt0 always use them if they exist.
51 * This is so BSPs work better when using the crt0 installed with gcc.
52 * We have to initalize them twice, so we cover a.out (which prepends
53 * an underscore) and coff object file formats.
54 */
55PROVIDE (hardware_init_hook = 0);
56PROVIDE (_hardware_init_hook = 0);
57PROVIDE (software_init_hook = 0);
58PROVIDE (_software_init_hook = 0);
59/*
60 * stick everything in ram (of course)
61 */
62SECTIONS
63{
64  .text :
65  {
66    *(.text .text.*)
67    . = ALIGN(0x4);
68     __CTOR_LIST__ = .;
69    ___CTOR_LIST__ = .;
70    LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
71    *(.ctors)
72    LONG(0)
73    __CTOR_END__ = .;
74    __DTOR_LIST__ = .;
75   ___DTOR_LIST__ = .;
76    LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
77    *(.dtors)
78     LONG(0)
79    __DTOR_END__ = .;
80    *(.rodata .rodata.*)
81    *(.gcc_except_table)
82
83    . = ALIGN(0x2);
84    __INIT_SECTION__ = . ;
85    LONG (0x4e560000)   /* linkw %fp,#0 */
86    *(.init)
87    SHORT (0x4e5e)      /* unlk %fp */
88    SHORT (0x4e75)      /* rts */
89
90    __FINI_SECTION__ = . ;
91    LONG (0x4e560000)   /* linkw %fp,#0 */
92    *(.fini)
93    SHORT (0x4e5e)      /* unlk %fp */
94    SHORT (0x4e75)      /* rts */
95
96    _etext = .;
97    *(.lit)
98  } > ram
99
100  .data :
101  {
102    *(.got.plt) *(.got)
103    *(.shdata)
104    *(.data .data.*)
105    _edata = .;
106  } > ram
107
108  .bss :
109  {
110    . = ALIGN(0x4);
111    __bss_start = . ;
112    *(.shbss)
113    *(.bss .bss.*)
114    *(COMMON)
115    _end =  ALIGN (0x8);
116    __end = _end;
117  } > ram
118
119  .stab 0 (NOLOAD) :
120  {
121    *(.stab)
122  }
123
124  .stabstr 0 (NOLOAD) :
125  {
126    *(.stabstr)
127  }
128}
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