Commit | Line | Data |
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252b5132 RH |
1 | # |
2 | # Unusual variables checked by this code: | |
3 | # NOP - two byte opcode for no-op (defaults to 0) | |
4 | # DATA_ADDR - if end-of-text-plus-one-page isn't right for data start | |
5 | # OTHER_READONLY_SECTIONS - other than .text .init .rodata ... | |
6 | # (e.g., .PARISC.milli) | |
7 | # OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ... | |
8 | # (e.g., .PARISC.global) | |
9 | # OTHER_SECTIONS - at the end | |
10 | # EXECUTABLE_SYMBOLS - symbols that must be defined for an | |
11 | # executable (e.g., _DYNAMIC_LINK) | |
12 | # TEXT_START_SYMBOLS - symbols that appear at the start of the | |
13 | # .text section. | |
14 | # DATA_START_SYMBOLS - symbols that appear at the start of the | |
15 | # .data section. | |
16 | # OTHER_BSS_SYMBOLS - symbols that appear at the start of the | |
17 | # .bss section besides __bss_start. | |
18 | # DATA_PLT - .plt should be in data segment, not text segment. | |
19 | # EMBEDDED - whether this is for an embedded system. | |
20 | # | |
21 | # When adding sections, do note that the names of some sections are used | |
22 | # when specifying the start address of the next. | |
23 | # | |
24 | test -z "$ENTRY" && ENTRY=_start | |
25 | test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT} | |
26 | test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT} | |
27 | if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi | |
28 | test "$LD_FLAG" = "N" && DATA_ADDR=. | |
29 | INTERP=".interp ${RELOCATING-0} : { *(.interp) }" | |
30 | PLT=".plt ${RELOCATING-0} : { *(.plt) }" | |
31 | ||
32 | ||
33 | CTOR=".ctors ${CONSTRUCTING-0} : | |
34 | { | |
35 | ${CONSTRUCTING+${CTOR_START}} | |
36 | /* gcc uses crtbegin.o to find the start of | |
37 | the constructors, so we make sure it is | |
38 | first. Because this is a wildcard, it | |
39 | doesn't matter if the user does not | |
40 | actually link against crtbegin.o; the | |
41 | linker won't look for a file to match a | |
42 | wildcard. The wildcard also means that it | |
43 | doesn't matter which directory crtbegin.o | |
44 | is in. */ | |
45 | ||
46 | KEEP (*crtbegin.o(.ctors)) | |
47 | ||
48 | /* We don't want to include the .ctor section from | |
49 | from the crtend.o file until after the sorted ctors. | |
50 | The .ctor section from the crtend file contains the | |
51 | end of ctors marker and it must be last */ | |
52 | ||
53 | KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) | |
54 | KEEP (*(SORT(.ctors.*))) | |
55 | KEEP (*(.ctors)) | |
56 | ${CONSTRUCTING+${CTOR_END}} | |
57 | }" | |
58 | ||
59 | DTOR=" .dtors ${CONSTRUCTING-0} : | |
60 | { | |
61 | ${CONSTRUCTING+${DTOR_START}} | |
62 | KEEP (*crtbegin.o(.dtors)) | |
63 | KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) | |
64 | KEEP (*(SORT(.dtors.*))) | |
65 | KEEP (*(.dtors)) | |
66 | ${CONSTRUCTING+${DTOR_END}} | |
67 | }" | |
68 | ||
69 | ||
70 | # if this is for an embedded system, don't add SIZEOF_HEADERS. | |
71 | if [ -z "$EMBEDDED" ]; then | |
72 | test -z "${READONLY_BASE_ADDRESS}" && READONLY_BASE_ADDRESS="${READONLY_START_ADDR} + SIZEOF_HEADERS" | |
73 | else | |
74 | test -z "${READONLY_BASE_ADDRESS}" && READONLY_BASE_ADDRESS="${READONLY_START_ADDR}" | |
75 | fi | |
76 | ||
77 | cat <<EOF | |
78 | OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", | |
79 | "${LITTLE_OUTPUT_FORMAT}") | |
80 | OUTPUT_ARCH(${OUTPUT_ARCH}) | |
81 | ENTRY(${ENTRY}) | |
82 | ||
83 | ${RELOCATING+${LIB_SEARCH_DIRS}} | |
84 | ${RELOCATING+/* Do we need any of these for elf? | |
85 | __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */} | |
86 | ${RELOCATING+${EXECUTABLE_SYMBOLS}} | |
87 | ${RELOCATING- /* For some reason, the Solaris linker makes bad executables | |
88 | if gld -r is used and the intermediate file has sections starting | |
89 | at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld | |
90 | bug. But for now assigning the zero vmas works. */} | |
91 | SECTIONS | |
92 | { | |
93 | /* Read-only sections, merged into text segment: */ | |
94 | ${CREATE_SHLIB-${RELOCATING+. = ${READONLY_BASE_ADDRESS};}} | |
95 | ${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}} | |
96 | ${CREATE_SHLIB-${INTERP}} | |
97 | .hash ${RELOCATING-0} : { *(.hash) } | |
98 | .dynsym ${RELOCATING-0} : { *(.dynsym) } | |
99 | .dynstr ${RELOCATING-0} : { *(.dynstr) } | |
100 | .rel.text ${RELOCATING-0} : { *(.rel.text) } | |
101 | .rela.text ${RELOCATING-0} : { *(.rela.text) } | |
102 | .rel.data ${RELOCATING-0} : { *(.rel.data) } | |
103 | .rela.data ${RELOCATING-0} : { *(.rela.data) } | |
104 | .rel.rodata ${RELOCATING-0} : { *(.rel.rodata) } | |
105 | .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) } | |
106 | .rel.got ${RELOCATING-0} : { *(.rel.got) } | |
107 | .rela.got ${RELOCATING-0} : { *(.rela.got) } | |
108 | .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } | |
109 | .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } | |
110 | .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } | |
111 | .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } | |
112 | .rel.init ${RELOCATING-0} : { *(.rel.init) } | |
113 | .rela.init ${RELOCATING-0} : { *(.rela.init) } | |
114 | .rel.fini ${RELOCATING-0} : { *(.rel.fini) } | |
115 | .rela.fini ${RELOCATING-0} : { *(.rela.fini) } | |
116 | .rel.bss ${RELOCATING-0} : { *(.rel.bss) } | |
117 | .rela.bss ${RELOCATING-0} : { *(.rela.bss) } | |
118 | .rel.plt ${RELOCATING-0} : { *(.rel.plt) } | |
119 | .rela.plt ${RELOCATING-0} : { *(.rela.plt) } | |
120 | ${DATA_PLT-${PLT}} | |
121 | .rodata ${RELOCATING-0} : { *(.rodata) *(.gnu.linkonce.r*) } | |
122 | .rodata1 ${RELOCATING-0} : { *(.rodata1) } | |
123 | ${RELOCATING+${OTHER_READONLY_SECTIONS}} | |
124 | ||
125 | /* Adjust the address for the data segment. */ | |
126 | ${RELOCATING+. = ${DATA_ADDR-ALIGN(4);}} | |
127 | ||
128 | .data ${RELOCATING-0} : | |
129 | { | |
130 | ${RELOCATING+${DATA_START_SYMBOLS}} | |
131 | *(.data) | |
132 | *(.data.*) | |
133 | *(.gnu.linkonce.d*) | |
134 | ${CONSTRUCTING+CONSTRUCTORS} | |
135 | } | |
136 | .data1 ${RELOCATING-0} : { *(.data1) } | |
137 | ${RELOCATING+${OTHER_READWRITE_SECTIONS}} | |
138 | ${RELOCATING+${CTOR}} | |
139 | ${RELOCATING+${DTOR}} | |
140 | .got ${RELOCATING-0} : { *(.got.plt) *(.got) } | |
141 | .dynamic ${RELOCATING-0} : { *(.dynamic) } | |
142 | ${DATA_PLT+${PLT}} | |
143 | /* We want the small data sections together, so single-instruction offsets | |
144 | can access them all, and initialized data all before uninitialized, so | |
145 | we can shorten the on-disk segment size. */ | |
146 | .sdata ${RELOCATING-0} : { *(.sdata) } | |
147 | ${RELOCATING+_edata = .;} | |
148 | ${RELOCATING+PROVIDE (edata = .);} | |
149 | ${RELOCATING+__bss_start = .;} | |
150 | ${RELOCATING+${OTHER_BSS_SYMBOLS}} | |
151 | .sbss ${RELOCATING-0} : { *(.sbss) *(.scommon) } | |
152 | .bss ${RELOCATING-0} : | |
153 | { | |
154 | *(.dynbss) | |
155 | *(.bss) | |
156 | *(COMMON) | |
157 | } | |
158 | ${RELOCATING+_end = . ;} | |
159 | ${RELOCATING+PROVIDE (end = .);} | |
160 | ||
161 | /* Stabs debugging sections. */ | |
162 | .stab 0 : { *(.stab) } | |
163 | .stabstr 0 : { *(.stabstr) } | |
164 | .stab.excl 0 : { *(.stab.excl) } | |
165 | .stab.exclstr 0 : { *(.stab.exclstr) } | |
166 | .stab.index 0 : { *(.stab.index) } | |
167 | .stab.indexstr 0 : { *(.stab.indexstr) } | |
168 | ||
169 | .comment 0 : { *(.comment) } | |
170 | ||
171 | /* DWARF debug sections. | |
172 | Symbols in the DWARF debugging sections are relative to the beginning | |
173 | of the section so we begin them at 0. */ | |
174 | ||
175 | /* DWARF 1 */ | |
176 | .debug 0 : { *(.debug) } | |
177 | .line 0 : { *(.line) } | |
178 | ||
179 | /* GNU DWARF 1 extensions */ | |
180 | .debug_srcinfo 0 : { *(.debug_srcinfo) } | |
181 | .debug_sfnames 0 : { *(.debug_sfnames) } | |
182 | ||
183 | /* DWARF 1.1 and DWARF 2 */ | |
184 | .debug_aranges 0 : { *(.debug_aranges) } | |
185 | .debug_pubnames 0 : { *(.debug_pubnames) } | |
186 | ||
187 | /* DWARF 2 */ | |
188 | .debug_info 0 : { *(.debug_info) } | |
189 | .debug_abbrev 0 : { *(.debug_abbrev) } | |
190 | .debug_line 0 : { *(.debug_line) } | |
191 | .debug_frame 0 : { *(.debug_frame) } | |
192 | .debug_str 0 : { *(.debug_str) } | |
193 | .debug_loc 0 : { *(.debug_loc) } | |
194 | .debug_macinfo 0 : { *(.debug_macinfo) } | |
195 | ||
196 | /* SGI/MIPS DWARF 2 extensions */ | |
197 | .debug_weaknames 0 : { *(.debug_weaknames) } | |
198 | .debug_funcnames 0 : { *(.debug_funcnames) } | |
199 | .debug_typenames 0 : { *(.debug_typenames) } | |
200 | .debug_varnames 0 : { *(.debug_varnames) } | |
201 | ||
202 | ${RELOCATING+${OTHER_RELOCATING_SECTIONS}} | |
203 | ||
204 | /* These must appear regardless of ${RELOCATING}. */ | |
205 | ${OTHER_SECTIONS} | |
206 | ||
207 | ||
208 | /* Hmmm, there's got to be a better way. This sets the stack to the | |
209 | top of the simulator memory (i.e. top of 64K data space). */ | |
210 | .stack 0x00007FFE : { _stack = .; *(.stack) } | |
211 | ||
212 | .text ${RELOCATING+${TEXT_START_ADDR}} : | |
213 | { | |
214 | ${RELOCATING+${TEXT_START_SYMBOLS}} | |
215 | KEEP (*(.init)) | |
216 | KEEP (*(.fini)) | |
217 | *(.text) | |
218 | *(.text.*) | |
219 | /* .gnu.warning sections are handled specially by elf32.em. */ | |
220 | *(.gnu.warning) | |
221 | *(.gnu.linkonce.t*) | |
222 | } =${NOP-0} | |
223 | ${RELOCATING+_etext = .;} | |
224 | ${RELOCATING+PROVIDE (etext = .);} | |
225 | } | |
226 | EOF |