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
14 # DATA_START_SYMBOLS - symbols that appear at the start of the
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.
20 # When adding sections, do note that the names of some sections are used
21 # when specifying the start address of the next.
23 test -z "$ENTRY" && ENTRY=_start
24 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
25 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
26 test "$LD_FLAG" = "N" && DATA_ADDR=.
27 SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) }"
28 SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) }"
29 INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
30 PLT=".plt ${RELOCATING-0} : { *(.plt) }"
32 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
33 "${LITTLE_OUTPUT_FORMAT}")
37 ${RELOCATING+${LIB_SEARCH_DIRS}}
38 ${RELOCATING+/* Do we need any of these for elf?
39 __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */}
40 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
41 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
42 if gld -r is used and the intermediate file has sections starting
43 at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld
44 bug. But for now assigning the zero vmas works. */}
47 /* Read-only sections, merged into text segment: */
48 ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
49 ${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
50 ${CREATE_SHLIB-${INTERP}}
51 .hash ${RELOCATING-0} : { *(.hash) }
52 .dynsym ${RELOCATING-0} : { *(.dynsym) }
53 .dynstr ${RELOCATING-0} : { *(.dynstr) }
54 .rela.text ${RELOCATING-0} : { *(.rela.text) }
55 .rela.data ${RELOCATING-0} : { *(.rela.data) }
56 .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) }
57 .rela.got ${RELOCATING-0} : { *(.rela.got) }
58 .rela.got1 ${RELOCATING-0} : { *(.rela.got1) }
59 .rela.got2 ${RELOCATING-0} : { *(.rela.got2) }
60 .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
61 .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
62 .rela.init ${RELOCATING-0} : { *(.rela.init) }
63 .rela.fini ${RELOCATING-0} : { *(.rela.fini) }
64 .rela.bss ${RELOCATING-0} : { *(.rela.bss) }
65 .rela.plt ${RELOCATING-0} : { *(.rela.plt) }
66 .rela.sdata ${RELOCATING-0} : { *(.rela.sdata2) }
67 .rela.sbss ${RELOCATING-0} : { *(.rela.sbss2) }
68 .rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2) }
69 .rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2) }
71 .text ${RELOCATING-0} :
73 ${RELOCATING+${TEXT_START_SYMBOLS}}
75 /* .gnu.warning sections are handled specially by elf32.em. */
78 .init ${RELOCATING-0} : { *(.init) } =${NOP-0}
79 .fini ${RELOCATING-0} : { *(.fini) } =${NOP-0}
80 .rodata ${RELOCATING-0} : { *(.rodata) }
81 .rodata1 ${RELOCATING-0} : { *(.rodata1) }
82 ${RELOCATING+_etext = .;}
83 ${RELOCATING+PROVIDE (etext = .);}
84 ${CREATE_SHLIB-${SDATA2}}
85 ${CREATE_SHLIB-${SBSS2}}
86 ${RELOCATING+${OTHER_READONLY_SECTIONS}}
88 /* Adjust the address for the data segment. We want to adjust up to
89 the same address within the page on the next page up. It would
90 be more correct to do this:
91 ${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE}) + (ALIGN(8) & (${MAXPAGESIZE} - 1))};}
92 The current expression does not correctly handle the case of a
93 text segment ending precisely at the end of a page; it causes the
94 data segment to skip a page. The above expression does not have
95 this problem, but it will currently (2/95) cause BFD to allocate
96 a single segment, combining both text and data, for this case.
97 This will prevent the text segment from being shared among
98 multiple executions of the program; I think that is more
99 important than losing a page of the virtual address space (note
100 that no actual memory is lost; the page which is skipped can not
102 ${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};}
104 .data ${RELOCATING-0} :
106 ${RELOCATING+${DATA_START_SYMBOLS}}
108 ${CONSTRUCTING+CONSTRUCTORS}
110 .data1 ${RELOCATING-0} : { *(.data1) }
111 ${RELOCATING+${OTHER_READWRITE_SECTIONS}}
113 .got1 ${RELOCATING-0} : { *(.got1) }
114 .dynamic ${RELOCATING-0} : { *(.dynamic) }
116 /* Put .ctors and .dtors next to the .got2 section, so that the pointers
117 get relocated with -mrelocatable. Also put in the .fixup pointers.
118 The current compiler no longer needs this, but keep it around for 2.7.2 */
120 ${RELOCATING+PROVIDE (_GOT2_START_ = .);}
121 .got2 ${RELOCATING-0} : { *(.got2) }
123 ${RELOCATING+PROVIDE (__CTOR_LIST__ = .);}
124 .ctors ${RELOCATING-0} : { *(.ctors) }
125 ${RELOCATING+PROVIDE (__CTOR_END__ = .);}
127 ${RELOCATING+PROVIDE (__DTOR_LIST__ = .);}
128 .dtors ${RELOCATING-0} : { *(.dtors) }
129 ${RELOCATING+PROVIDE (__DTOR_END__ = .);}
131 ${RELOCATING+PROVIDE (_FIXUP_START_ = .);}
132 .fixup ${RELOCATING-0} : { *(.fixup) }
133 ${RELOCATING+PROVIDE (_FIXUP_END_ = .);}
134 ${RELOCATING+PROVIDE (_GOT2_END_ = .);}
136 ${RELOCATING+PROVIDE (_GOT_START_ = .);}
137 ${RELOCATING+PROVIDE (_GLOBAL_OFFSET_TABLE_ = .);}
138 .got ${RELOCATING-0} : { *(.got) }
139 .got.plt ${RELOCATING-0} : { *(.got.plt) }
140 ${CREATE_SHLIB+${SDATA2}}
141 ${CREATE_SHLIB+${SBSS2}}
142 ${RELOCATING+PROVIDE (_GOT_END_ = .);}
145 /* We want the small data sections together, so single-instruction offsets
146 can access them all, and initialized data all before uninitialized, so
147 we can shorten the on-disk segment size. */
148 .sdata ${RELOCATING-0} : { *(.sdata) }
149 ${RELOCATING+_edata = .;}
150 ${RELOCATING+PROVIDE (edata = .);}
151 .sbss ${RELOCATING-0} :
153 ${RELOCATING+PROVIDE (__sbss_start = .);}
156 ${RELOCATING+PROVIDE (__sbss_end = .);}
158 .bss ${RELOCATING-0} :
160 ${RELOCATING+${OTHER_BSS_SYMBOLS}}
161 ${RELOCATING+PROVIDE (__bss_start = .);}
166 ${RELOCATING+_end = . ;}
167 ${RELOCATING+PROVIDE (end = .);}
169 /* These are needed for ELF backends which have not yet been
170 converted to the new style linker. */
171 .stab 0 : { *(.stab) }
172 .stabstr 0 : { *(.stabstr) }
174 /* DWARF debug sections.
175 Symbols in the .debug DWARF section are relative to the beginning of the
176 section so we begin .debug at 0. It's not clear yet what needs to happen
178 .debug 0 : { *(.debug) }
179 .debug_srcinfo 0 : { *(.debug_srcinfo) }
180 .debug_aranges 0 : { *(.debug_aranges) }
181 .debug_pubnames 0 : { *(.debug_pubnames) }
182 .debug_sfnames 0 : { *(.debug_sfnames) }
183 .line 0 : { *(.line) }
185 /* These must appear regardless of ${RELOCATING}. */