aboutsummaryrefslogtreecommitdiff
path: root/ld/scripttempl/elfmicroblaze.sc
blob: 86b1d228da63bb17003fd6c80316762043fa65cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
# Adapted from mips.sc
#
# Copyright (C) 2014-2015 Free Software Foundation, Inc.
# 
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
#
# These variables may be overridden by the emulation file.  The
# defaults are appropriate for a DECstation running Ultrix.

test -z "$ENTRY" && ENTRY=_start

#test -z "$TEXT_START_ADDR" && TEXT_START_ADDR="0x0"

CTOR=".ctors ${CONSTRUCTING-0} : 
  {
    ${CONSTRUCTING+${CTOR_START}}
    /* gcc uses crtbegin.o to find the start of
       the constructors, so we make sure it is
       first.  Because this is a wildcard, it
       doesn't matter if the user does not
       actually link against crtbegin.o; the
       linker won't look for a file to match a
       wildcard.  The wildcard also means that it
       doesn't matter which directory crtbegin.o
       is in.  */

    KEEP (*crtbegin.o(.ctors))

    /* We don't want to include the .ctor section from
       from the crtend.o file until after the sorted ctors.
       The .ctor section from the crtend file contains the
       end of ctors marker and it must be last */

    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
    KEEP (*(SORT(.ctors.*)))
    KEEP (*(.ctors))
    ${CONSTRUCTING+${CTOR_END}}
  }"

DTOR=" .dtors       ${CONSTRUCTING-0} :
  {
    ${CONSTRUCTING+${DTOR_START}}
    KEEP (*crtbegin.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
    ${CONSTRUCTING+${DTOR_END}}
  }"

cat <<EOF
/* Copyright (C) 2014-2015 Free Software Foundation, Inc.

   Copying and distribution of this script, with or without modification,
   are permitted in any medium without royalty provided the copyright
   notice and this notice are preserved.  */

OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
	      "${LITTLE_OUTPUT_FORMAT}")
/*${LIB_SEARCH_DIRS}*/
${RELOCATING+${LIB_SEARCH_DIRS}}

${RELOCATING+ENTRY (${ENTRY})}

_TEXT_START_ADDR = DEFINED(_TEXT_START_ADDR) ? _TEXT_START_ADDR : 0x50;		
_HEAP_SIZE = DEFINED(_HEAP_SIZE) ? _HEAP_SIZE : 0x0;
_STACK_SIZE = DEFINED(_STACK_SIZE) ? _STACK_SIZE : 0x400;

SECTIONS
{
  .vectors.reset 0x0 : { KEEP (*(.vectors.reset)) } = 0
  .vectors.sw_exception 0x8 : { KEEP (*(.vectors.sw_exception)) } = 0
  .vectors.interrupt 0x10 : { KEEP (*(.vectors.interrupt)) } = 0
  .vectors.debug_sw_break 0x18 : { KEEP (*(.vectors.debug_sw_break)) } = 0
  .vectors.hw_exception 0x20 : { KEEP (*(.vectors.hw_exception)) } = 0

  ${RELOCATING+. = _TEXT_START_ADDR;}

  ${RELOCATING+ _ftext  =  .;}
  .text : {
    ${RELOCATING+*(.text)}
    ${RELOCATING+*(.text.*)}
    ${RELOCATING+*(.gnu.linkonce.t.*)}
  }
  ${RELOCATING+ _etext  =  .;}

  .init : { KEEP (*(.init))	} =0
  .fini : { KEEP (*(.fini))	} =0

  ${RELOCATING+PROVIDE (__CTOR_LIST__ = .);}
  ${RELOCATING+PROVIDE (___CTOR_LIST__ = .);}
  ${RELOCATING+${CTOR}}
  ${RELOCATING+PROVIDE (__CTOR_END__ = .);}
  ${RELOCATING+PROVIDE (___CTOR_END__ = .);}

  ${RELOCATING+PROVIDE (__DTOR_LIST__ = .);}
  ${RELOCATING+PROVIDE (___DTOR_LIST__ = .);}
  ${RELOCATING+${DTOR}}
  ${RELOCATING+PROVIDE (__DTOR_END__ = .);}
  ${RELOCATING+PROVIDE (___DTOR_END__ = .);}

  ${RELOCATING+ . = ALIGN(4);}
   ${RELOCATING+ _frodata = . ;}
  .rodata : {
    ${RELOCATING+*(.rodata)}
    ${RELOCATING+*(.rodata.*)}
    ${RELOCATING+*(.gnu.linkonce.r.*)}
    ${CONSTRUCTING+CONSTRUCTORS}; /* Is this needed? */
  }
  ${RELOCATING+ _erodata = .;}

  /* Alignments by 8 to ensure that _SDA2_BASE_ on a word boundary */
  /* Note that .sdata2 and .sbss2 must be contiguous */
  ${RELOCATING+. = ALIGN(8);}
  ${RELOCATING+ _ssrw = .;}
  .sdata2 : {
    ${RELOCATING+*(.sdata2)}
    ${RELOCATING+*(.sdata2.*)}
    ${RELOCATING+*(.gnu.linkonce.s2.*)}
  }
  ${RELOCATING+. = ALIGN(4);}
  .sbss2 : {
    ${RELOCATING+PROVIDE (__sbss2_start = .);}	
    ${RELOCATING+*(.sbss2)}
    ${RELOCATING+*(.sbss2.*)}
    ${RELOCATING+*(.gnu.linkonce.sb2.*)}
    ${RELOCATING+PROVIDE (__sbss2_end = .);}
  }
  ${RELOCATING+. = ALIGN(8);}
  ${RELOCATING+ _essrw = .;}
  ${RELOCATING+ _ssrw_size = _essrw - _ssrw;}
  ${RELOCATING+ PROVIDE (_SDA2_BASE_ = _ssrw + (_ssrw_size / 2 ));}

  ${RELOCATING+ . = ALIGN(4);}
  ${RELOCATING+ _fdata = .;}
  .data : {
    ${RELOCATING+*(.data)}
    ${RELOCATING+*(.gnu.linkonce.d.*)}
    ${CONSTRUCTING+CONSTRUCTORS}; /* Is this needed? */
  }
  ${RELOCATING+ _edata = . ;}
  
   /* Added to handle pic code */
  .got : {  
    ${RELOCATING+*(.got)}
  }

  .got1 : {  
    ${RELOCATING+*(.got1)}
  }

  .got2 : {  
    ${RELOCATING+*(.got2)}
  }

  /* Added by Sathya to handle C++ exceptions */
  .eh_frame : {  
    ${RELOCATING+*(.eh_frame)}
  }
  
  .jcr : {  
    ${RELOCATING+*(.jcr)}
  }

  .gcc_except_table : {  
    ${RELOCATING+*(.gcc_except_table)}
  }

  /* Alignments by 8 to ensure that _SDA_BASE_ on a word boundary */
  /* Note that .sdata and .sbss must be contiguous */
  ${RELOCATING+. = ALIGN(8);}
  ${RELOCATING+ _ssro = .;}
  .sdata : {
    ${RELOCATING+*(.sdata)}
    ${RELOCATING+*(.sdata.*)}
    ${RELOCATING+*(.gnu.linkonce.s.*)}
  }
  ${RELOCATING+. = ALIGN(4);}
  .sbss : {
    ${RELOCATING+PROVIDE (__sbss_start = .);}	
    ${RELOCATING+*(.sbss)}
    ${RELOCATING+*(.sbss.*)}
    ${RELOCATING+*(.gnu.linkonce.sb.*)}
    ${RELOCATING+PROVIDE (__sbss_end = .);}
  }
  ${RELOCATING+. = ALIGN(8);}
  ${RELOCATING+ _essro = .;}
  ${RELOCATING+ _ssro_size = _essro - _ssro;}
  ${RELOCATING+PROVIDE (_SDA_BASE_ = _ssro + (_ssro_size / 2 ));}

  ${RELOCATING+ . = ALIGN(4);}
  ${RELOCATING+ _fbss = .;}
  .bss : {
    ${RELOCATING+PROVIDE (__bss_start = .);}	
    ${RELOCATING+*(.bss)}
    ${RELOCATING+*(.bss.*)}
    ${RELOCATING+*(.gnu.linkonce.b.*)}
    ${RELOCATING+*(COMMON)}
    ${RELOCATING+. = ALIGN(. != 0 ? 4 : 1);}
    
    ${RELOCATING+PROVIDE (__bss_end = .);}

  }

  ${RELOCATING+ . = ALIGN(4);}

  .heap : {
    ${RELOCATING+ _heap = .;}
    ${RELOCATING+ _heap_start = .;}
    ${RELOCATING+ . += _HEAP_SIZE;}
    ${RELOCATING+ _heap_end = .;}
  } 

  ${RELOCATING+ . = ALIGN(4);}

  .stack : {
    ${RELOCATING+ _stack_end = .;}
    ${RELOCATING+ . += _STACK_SIZE;}
    ${RELOCATING+ . = ALIGN(. != 0 ? 8 : 1);}
    ${RELOCATING+ _stack = .;}
    ${RELOCATING+ _end = .;}
  }

  .tdata : {  
    ${RELOCATING+*(.tdata)}
    ${RELOCATING+*(.tdata.*)}
    ${RELOCATING+*(.gnu.linkonce.td.*)}
  }
  .tbss : {  
    ${RELOCATING+*(.tbss)}
    ${RELOCATING+*(.tbss.*)}
    ${RELOCATING+*(.gnu.linkonce.tb.*)}
  }
}
EOF