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219d1afa | 1 | # Copyright (C) 2014-2018 Free Software Foundation, Inc. |
6c19b93b | 2 | # |
c18392d8 EB |
3 | # Copying and distribution of this file, with or without modification, |
4 | # are permitted in any medium without royalty provided the copyright | |
5 | # notice and this notice are preserved. | |
6 | ||
7 | # Many sections come in three flavours. There is the 'real' section, | |
8 | # like ".data". Then there are the per-procedure or per-variable | |
9 | # sections, generated by -ffunction-sections and -fdata-sections in GCC, | |
10 | # and useful for --gc-sections, which for a variable "foo" might be | |
11 | # ".data.foo". Then there are the linkonce sections, for which the linker | |
12 | # eliminates duplicates, which are named like ".gnu.linkonce.d.foo". | |
13 | # The exact correspondences are: | |
14 | # | |
15 | # Section Linkonce section | |
16 | # .text .gnu.linkonce.t.foo | |
17 | # .rodata .gnu.linkonce.r.foo | |
18 | # .data .gnu.linkonce.d.foo | |
19 | # .bss .gnu.linkonce.b.foo | |
20 | # .sdata .gnu.linkonce.s.foo | |
21 | # .sbss .gnu.linkonce.sb.foo | |
22 | # .sdata2 .gnu.linkonce.s2.foo | |
23 | # .sbss2 .gnu.linkonce.sb2.foo | |
24 | # .debug_info .gnu.linkonce.wi.foo | |
25 | # .tdata .gnu.linkonce.td.foo | |
26 | # .tbss .gnu.linkonce.tb.foo | |
27 | # .lrodata .gnu.linkonce.lr.foo | |
28 | # .ldata .gnu.linkonce.l.foo | |
29 | # .lbss .gnu.linkonce.lb.foo | |
30 | # | |
31 | # Each of these can also have corresponding .rel.* and .rela.* sections. | |
32 | ||
33 | test -z "$ENTRY" && ENTRY=__start | |
34 | cat <<EOF | |
35 | OUTPUT_FORMAT("${OUTPUT_FORMAT}") | |
36 | ||
37 | ENTRY(${ENTRY}) | |
38 | ||
39 | /* Start and end of main stack. Assumes 256K of RAM. */ | |
40 | ${RELOCATING+ _estack = 0xe0040000 - 4;} | |
41 | ${RELOCATING+ _sstack = 0xe0040000 - 64K;} | |
42 | ||
43 | /* End of heap. */ | |
44 | ${RELOCATING+ _eheap = _sstack - 4;} | |
45 | ||
46 | ||
47 | MEMORY | |
48 | { | |
49 | init : ORIGIN = 0x00000000, LENGTH = 0x0003fffc | |
50 | scr : ORIGIN = 0x0003fffc, LENGTH = 0x00000004 | |
51 | rom : ORIGIN = 0x00044000, LENGTH = 0x1ffbc000 | |
52 | ram : ORIGIN = 0xe0000000, LENGTH = 0x10000000 | |
53 | saferam : ORIGIN = 0xf0000000, LENGTH = 0x10000000 | |
54 | } | |
55 | ||
56 | ||
57 | SECTIONS | |
58 | { | |
59 | .init ${RELOCATING-0} : { | |
60 | KEEP (*(.init)) | |
61 | KEEP (*(.fini)) | |
62 | ${RELOCATING+ _einit = .;} | |
63 | } ${RELOCATING+ > init} | |
64 | ||
65 | .text ${RELOCATING-0} : { | |
66 | ${RELOCATING+ _ftext = .;} | |
67 | *(.text) | |
68 | ${RELOCATING+*(.text.*)} | |
69 | ${RELOCATING+*(.gnu.linkonce.t.*)} | |
70 | ${RELOCATING+ _etext = .;} | |
71 | } ${RELOCATING+ > rom} | |
72 | ||
73 | .ctors ${RELOCATING-0} : { | |
74 | ${CONSTRUCTING+ . = ALIGN(4);} | |
75 | ${CONSTRUCTING+ __CTOR_LIST__ = .;} | |
76 | /* gcc uses crtbegin.o to find the start of | |
77 | the constructors, so we make sure it is | |
78 | first. Because this is a wildcard, it | |
79 | doesn't matter if the user does not | |
80 | actually link against crtbegin.o; the | |
81 | linker won't look for a file to match a | |
82 | wildcard. The wildcard also means that it | |
83 | doesn't matter which directory crtbegin.o | |
84 | is in. */ | |
85 | ||
86 | KEEP (*crtbegin*.o(.ctors)) | |
87 | ||
88 | /* We don't want to include the .ctor section from | |
89 | from the crtend.o file until after the sorted ctors. | |
90 | The .ctor section from the crtend file contains the | |
91 | end of ctors marker and it must be last. */ | |
92 | ||
93 | KEEP (*(EXCLUDE_FILE (*crtend*.o) .ctors)) | |
94 | KEEP (*(SORT(.ctors.*))) | |
95 | KEEP (*(.ctors)) | |
96 | ${CONSTRUCTING+ __CTOR_END__ = .;} | |
97 | } ${RELOCATING+ > rom} | |
98 | ||
99 | .dtors ${RELOCATING-0} : { | |
100 | ${CONSTRUCTING+ __DTOR_LIST__ = .;} | |
101 | KEEP (*crtbegin*.o(.dtors)) | |
102 | KEEP (*(EXCLUDE_FILE (*crtend*.o) .dtors)) | |
103 | KEEP (*(SORT(.dtors.*))) | |
104 | KEEP (*(.dtors)) | |
105 | ${CONSTRUCTING+ __DTOR_END__ = .;} | |
106 | } ${RELOCATING+ > rom} | |
107 | .rodata ${RELOCATING-0} : { | |
108 | ${RELOCATING+ . = ALIGN(4);} | |
109 | ${RELOCATING+ _srdata = .;} | |
110 | *(.rdata) | |
111 | *(.rodata) | |
112 | ${RELOCATING+*(.rodata.*)} | |
113 | ${RELOCATING+*(.gnu.linkonce.r.*)} | |
114 | ${RELOCATING+ . = ALIGN(4);} | |
115 | ${RELOCATING+ _erdata = .;} | |
116 | } ${RELOCATING+ > rom} | |
117 | ||
118 | .eh_frame ${RELOCATING-0} : | |
119 | { | |
120 | ${RELOCATING+PROVIDE (__eh_frame_begin = .);} | |
121 | *(.eh_frame) | |
122 | ${RELOCATING+ LONG (0);} | |
123 | ${RELOCATING+PROVIDE (__eh_frame_end = .);} | |
124 | } ${RELOCATING+ > rom} | |
125 | .gcc_except_table ${RELOCATING-0} : { *(.gcc_except_table) } ${RELOCATING+ > rom} | |
126 | .jcr ${RELOCATING-0} : { *(.jcr) } ${RELOCATING+ > rom} | |
127 | ||
128 | .data ${RELOCATING-0} : { | |
129 | ${RELOCATING+ . = ALIGN(4);} | |
130 | ${RELOCATING+ _sdata = .;} | |
131 | *(.data) | |
132 | ${RELOCATING+*(.data.*)} | |
133 | ${RELOCATING+*(.gnu.linkonce.d.*)} | |
134 | ${RELOCATING+ . = ALIGN(4);} | |
135 | ${RELOCATING+ _edata = .;} | |
136 | } ${RELOCATING+ > ram} | |
6c19b93b | 137 | .bss ${RELOCATING-0} : { |
c18392d8 EB |
138 | ${RELOCATING+ . = ALIGN(4);} |
139 | ${RELOCATING+ __bss_start = .;} | |
140 | *(.bss) | |
141 | ${RELOCATING+*(.bss.*)} | |
142 | ${RELOCATING+*(.gnu.linkonce.b.*)} | |
143 | *(COMMON) | |
144 | ${RELOCATING+ . = ALIGN(4);} | |
145 | ${RELOCATING+ __bss_end = .;} | |
146 | ${RELOCATING+ _sheap = .;} | |
147 | } ${RELOCATING+ > ram} | |
148 | ||
149 | saferam ${RELOCATING-0} : { | |
150 | *(saferam) | |
151 | ${RELOCATING+ . = ALIGN(4);} | |
152 | ${RELOCATING+ unitidentry = .;} | |
153 | } ${RELOCATING+ > saferam} | |
154 | ||
155 | /* Stabs debugging sections. */ | |
156 | .stab 0 : { *(.stab) } | |
157 | .stabstr 0 : { *(.stabstr) } | |
158 | .stab.excl 0 : { *(.stab.excl) } | |
159 | .stab.exclstr 0 : { *(.stab.exclstr) } | |
160 | .stab.index 0 : { *(.stab.index) } | |
161 | .stab.indexstr 0 : { *(.stab.indexstr) } | |
162 | ||
163 | .comment 0 : { *(.comment) } | |
164 | ||
165 | EOF | |
166 | ||
167 | . $srcdir/scripttempl/DWARF.sc | |
168 | ||
169 | cat <<EOF | |
170 | } | |
171 | ||
172 | /* Provide a default address for the simulated file-I/O device. */ | |
173 | PROVIDE (_sim_fileio_register = 0x2fff0000); | |
174 | ||
175 | /* Provide a default address for the simulated command line device. */ | |
176 | PROVIDE (_sim_cmdline_header = 0x2ffe0000); | |
177 | ||
178 | /* Provide a default address for the simulated 1 MHz clock. */ | |
179 | PROVIDE (_sim_clock = 0x20002100); | |
180 | ||
181 | EOF |