Commit | Line | Data |
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fe1379d4 ILT |
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. | |
01d8a359 | 18 | # EMBEDDED - whether this is for an embedded system. |
fe1379d4 ILT |
19 | # |
20 | # When adding sections, do note that the names of some sections are used | |
21 | # when specifying the start address of the next. | |
22 | # | |
23 | ||
24 | # We use a start address of __start for Irix 5, _start for other | |
25 | # targets. This is for compatibility with Irix 5, and with old MIPS | |
26 | # ELF toolchains. | |
27 | if [ -z "$ENTRY" ]; then | |
7df4ba26 | 28 | case "${target}" in |
fe1379d4 ILT |
29 | mips*-*-irix5*) ENTRY=__start ;; |
30 | *) ENTRY=_start ;; | |
31 | esac | |
32 | fi | |
33 | ||
01d8a359 RS |
34 | # if this is for an embedded system, don't add SIZEOF_HEADERS. |
35 | if [ -z "$EMBEDDED" ]; then | |
36 | test -z ${TEXT_BASE_ADDRESS} && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS" | |
37 | else | |
38 | test -z ${TEXT_BASE_ADDRESS} && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}" | |
39 | fi | |
40 | ||
fe1379d4 ILT |
41 | test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT} |
42 | test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT} | |
43 | test "$LD_FLAG" = "N" && DATA_ADDR=. | |
44 | INTERP=".interp ${RELOCATING-0} : { *(.interp) }" | |
45 | cat <<EOF | |
46 | OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", | |
47 | "${LITTLE_OUTPUT_FORMAT}") | |
48 | OUTPUT_ARCH(${ARCH}) | |
49 | ENTRY(${ENTRY}) | |
50 | ||
51 | ${RELOCATING+${LIB_SEARCH_DIRS}} | |
52 | ${RELOCATING+/* Do we need any of these for elf? | |
53 | __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */} | |
54 | ${RELOCATING+${EXECUTABLE_SYMBOLS}} | |
55 | ${RELOCATING- /* For some reason, the Solaris linker makes bad executables | |
56 | if gld -r is used and the intermediate file has sections starting | |
57 | at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld | |
58 | bug. But for now assigning the zero vmas works. */} | |
59 | SECTIONS | |
60 | { | |
61 | /* Read-only sections, merged into text segment: */ | |
01d8a359 | 62 | ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}} |
fe1379d4 ILT |
63 | ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}} |
64 | ${CREATE_SHLIB-${INTERP}} | |
65 | .reginfo ${RELOCATING-0} : { *(.reginfo) } | |
66 | .dynamic ${RELOCATING-0} : { *(.dynamic) } | |
67 | .dynstr ${RELOCATING-0} : { *(.dynstr) } | |
68 | .dynsym ${RELOCATING-0} : { *(.dynsym) } | |
69 | .hash ${RELOCATING-0} : { *(.hash) } | |
70 | .rel.text ${RELOCATING-0} : { *(.rel.text) } | |
71 | .rela.text ${RELOCATING-0} : { *(.rela.text) } | |
72 | .rel.data ${RELOCATING-0} : { *(.rel.data) } | |
73 | .rela.data ${RELOCATING-0} : { *(.rela.data) } | |
74 | .rel.rodata ${RELOCATING-0} : { *(.rel.rodata) } | |
75 | .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) } | |
76 | .rel.got ${RELOCATING-0} : { *(.rel.got) } | |
77 | .rela.got ${RELOCATING-0} : { *(.rela.got) } | |
78 | .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } | |
79 | .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } | |
80 | .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } | |
81 | .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } | |
82 | .rel.init ${RELOCATING-0} : { *(.rel.init) } | |
83 | .rela.init ${RELOCATING-0} : { *(.rela.init) } | |
84 | .rel.fini ${RELOCATING-0} : { *(.rel.fini) } | |
85 | .rela.fini ${RELOCATING-0} : { *(.rela.fini) } | |
86 | .rel.bss ${RELOCATING-0} : { *(.rel.bss) } | |
87 | .rela.bss ${RELOCATING-0} : { *(.rela.bss) } | |
88 | .rel.plt ${RELOCATING-0} : { *(.rel.plt) } | |
89 | .rela.plt ${RELOCATING-0} : { *(.rela.plt) } | |
90 | .rodata ${RELOCATING-0} : { *(.rodata) } | |
91 | .rodata1 ${RELOCATING-0} : { *(.rodata1) } | |
92 | .init ${RELOCATING-0} : { *(.init) } =${NOP-0} | |
93 | .text ${RELOCATING-0} : | |
94 | { | |
95 | ${CREATE_SHLIB-${RELOCATING+${TEXT_START_SYMBOLS}}} | |
96 | *(.text) | |
97 | *(.stub) | |
98 | /* .gnu.warning sections are handled specially by elf32.em. */ | |
99 | *(.gnu.warning) | |
100 | } =${NOP-0} | |
101 | ${CREATE_SHLIB-${RELOCATING+_etext = .;}} | |
102 | ${CREATE_SHLIB-${RELOCATING+PROVIDE (etext = .);}} | |
103 | .fini ${RELOCATING-0} : { *(.fini) } =${NOP-0} | |
104 | ||
105 | /* Adjust the address for the data segment. We want to adjust up to | |
106 | the same address within the page on the next page up. It would | |
107 | be more correct to do this: | |
108 | ${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE}) | |
109 | + ((ALIGN(8) + ${MAXPAGESIZE} - ALIGN(${MAXPAGESIZE})) | |
110 | & (${MAXPAGESIZE} - 1)};} | |
111 | The current expression does not correctly handle the case of a | |
112 | text segment ending precisely at the end of a page; it causes the | |
113 | data segment to skip a page. The above expression does not have | |
114 | this problem, but it will currently (2/95) cause BFD to allocate | |
115 | a single segment, combining both text and data, for this case. | |
116 | This will prevent the text segment from being shared among | |
117 | multiple executions of the program; I think that is more | |
118 | important than losing a page of the virtual address space (note | |
119 | that no actual memory is lost; the page which is skipped can not | |
120 | be referenced). */ | |
121 | ${CREATE_SHLIB-${RELOCATING+. += ${DATA_ADDR} - ${TEXT_START_ADDR};}} | |
122 | ${CREATE_SHLIB+${RELOCATING+. += 0x10000;}} | |
123 | .data ${RELOCATING-0} : | |
124 | { | |
125 | ${CREATE_SHLIB-${RELOCATING+${DATA_START_SYMBOLS}}} | |
126 | *(.data) | |
127 | ${CONSTRUCTING+CONSTRUCTORS} | |
128 | } | |
129 | .data1 ${RELOCATING-0} : { *(.data1) } | |
130 | .ctors ${RELOCATING-0} : { *(.ctors) } | |
131 | .dtors ${RELOCATING-0} : { *(.dtors) } | |
132 | ${RELOCATING+${OTHER_GOT_SYMBOLS}} | |
133 | .got ${RELOCATING-0} : | |
134 | { | |
135 | *(.got.plt) *(.got) | |
136 | } | |
137 | /* We want the small data sections together, so single-instruction offsets | |
138 | can access them all, and initialized data all before uninitialized, so | |
139 | we can shorten the on-disk segment size. */ | |
140 | .sdata ${RELOCATING-0} : { *(.sdata) } | |
141 | ${RELOCATING+${OTHER_READWRITE_SECTIONS}} | |
142 | ${CREATE_SHLIB-${RELOCATING+_edata = .;}} | |
143 | ${CREATE_SHLIB-${RELOCATING+PROVIDE (edata = .);}} | |
144 | ${CREATE_SHLIB-${RELOCATING+__bss_start = .;}} | |
145 | ${CREATE_SHLIB-${RELOCATING+${OTHER_BSS_SYMBOLS}}} | |
146 | .sbss ${RELOCATING-0} : { *(.sbss) *(.scommon) } | |
147 | .bss ${RELOCATING-0} : | |
148 | { | |
149 | *(.dynbss) | |
150 | *(.bss) | |
151 | *(COMMON) | |
152 | } | |
153 | ${CREATE_SHLIB-${RELOCATING+_end = . ;}} | |
154 | ${CREATE_SHLIB-${RELOCATING+PROVIDE (end = .);}} | |
155 | ||
156 | /* These are needed for ELF backends which have not yet been | |
157 | converted to the new style linker. */ | |
158 | .stab 0 : { *(.stab) } | |
159 | .stabstr 0 : { *(.stabstr) } | |
160 | ||
161 | /* DWARF debug sections. | |
162 | Symbols in the .debug DWARF section are relative to the beginning of the | |
163 | section so we begin .debug at 0. It's not clear yet what needs to happen | |
164 | for the others. */ | |
165 | .debug 0 : { *(.debug) } | |
166 | .debug_srcinfo 0 : { *(.debug_srcinfo) } | |
167 | .debug_aranges 0 : { *(.debug_aranges) } | |
168 | .debug_pubnames 0 : { *(.debug_pubnames) } | |
169 | .debug_sfnames 0 : { *(.debug_sfnames) } | |
170 | .line 0 : { *(.line) } | |
171 | ||
172 | /* These must appear regardless of ${RELOCATING}. */ | |
173 | ${OTHER_SECTIONS} | |
174 | } | |
175 | EOF |