diff options
| -rw-r--r-- | ld/ChangeLog | 4 | ||||
| -rw-r--r-- | ld/scripttempl/elf.sc | 73 |
2 files changed, 64 insertions, 13 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index defb66c..97c71be 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,7 @@ +Fri Jan 7 20:00:24 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com) + + * scripttempl/elf.c: Define __bss_start before the .sbss section. + Thu Jan 6 00:13:10 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com) * ldmain.c (add_to_set): Add bitsize argument. diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc index 2e75875..a6f9302 100644 --- a/ld/scripttempl/elf.sc +++ b/ld/scripttempl/elf.sc @@ -1,36 +1,83 @@ +# +# Unusual variables checked by this code: +# NOP - two byte opcode for no-op (defaults to 0) +# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start +# OTHER_READONLY_SECTIONS - other than .text .init .ctors .rodata ... +# (e.g., .PARISC.milli) +# OTHER_READWRITE_SECTIONS - other than .data .bss .sdata ... +# (e.g., .PARISC.global) +# EXECUTABLE_SYMBOLS - symbols that must be defined for an +# executable (e.g., _DYNAMIC_LINK) +# +# When adding sections, do note that the names of some sections are used +# when specifying the start address of the next. +# cat <<EOF OUTPUT_FORMAT("${OUTPUT_FORMAT}") OUTPUT_ARCH(${ARCH}) ${RELOCATING+${LIB_SEARCH_DIRS}} -/* Do we need any of these for elf? - ${RELOCATING+__DYNAMIC = 0;} - ${STACKZERO+${RELOCATING+${STACKZERO}}} - ${SHLIB_PATH+${RELOCATING+${SHLIB_PATH}}} */ +${RELOCATING+/* Do we need any of these for elf? + __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */} +${RELOCATING+${EXECUTABLE_SYMBOLS}} +${RELOCATING- /* For some reason, the Solaris linker makes bad executables + if gld -r is used and the intermediate file has sections starting + at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld + bug. But for now assigning the zero vmas works. */} SECTIONS { - .text ${RELOCATING+${TEXT_START_ADDR}}: + /* Read-only sections, merged into text segment: */ + .text ${RELOCATING+${TEXT_START_ADDR}} ${RELOCATING-0} : { - CREATE_OBJECT_SYMBOLS - *(.init) *(.text) - *(.fini) - *(.rodata) - ${RELOCATING+_etext = ${DATA_ALIGNMENT};} + CREATE_OBJECT_SYMBOLS + ${RELOCATING+_etext = .;} } - .data ${RELOCATING+${DATA_ALIGNMENT}} : + .init ${RELOCATING+.} ${RELOCATING-0} : { *(.init) } =${NOP-0} + .fini ${RELOCATING+.} ${RELOCATING-0} : { *(.fini) } =${NOP-0} + .ctors ${RELOCATING+.} ${RELOCATING-0} : { *(.ctors) } + .dtors ${RELOCATING+.} ${RELOCATING-0} : { *(.dtors) } + .rodata ${RELOCATING+.} ${RELOCATING-0} : { *(.rodata) } + .rodata1 ${RELOCATING+.} ${RELOCATING-0} : { *(.rodata1) } + ${RELOCATING+${OTHER_READONLY_SECTIONS}} + /* also: .hash .dynsym .dynstr .plt(if r/o) .rel.got */ + + /* Read-write section, merged into data segment: */ + .data ${RELOCATING+ + ${DATA_ADDR- ADDR(.rodata1)+SIZEOF(.rodata1)+${MAXPAGESIZE}} + } + ${RELOCATING-0} : { *(.data) ${CONSTRUCTING+CONSTRUCTORS} ${RELOCATING+_edata = .;} } - .bss ${RELOCATING+SIZEOF(.data) + ADDR(.data)} : + .data1 ${RELOCATING+.} ${RELOCATING-0} : { *(.data1) } + ${RELOCATING+${OTHER_READWRITE_SECTIONS}} + /* also (before uninitialized portion): .dynamic .got .plt(if r/w) + (or does .dynamic go into its own segment?) */ + /* We want the small data sections together, so single-instruction offsets + can access them all, and initialized data all before uninitialized, so + we can shorten the on-disk segment size. */ + .sdata ${RELOCATING+.} ${RELOCATING-0} : { *(.sdata) } + ${RELOCATING+__bss_start = .}; + .sbss ${RELOCATING+.} ${RELOCATING-0} : { *(.sbss) *(.scommon) } + .bss ${RELOCATING+.} ${RELOCATING-0} : { - ${RELOCATING+ __bss_start = .}; *(.bss) *(COMMON) ${RELOCATING+_end = . }; ${RELOCATING+end = . }; } + + /* Debug sections. These should never be loadable, but they must have + zero addresses for the debuggers to work correctly. */ + .line 0 : { *(.line) } + .debug 0 : { *(.debug) } + .debug_sfnames 0 : { *(.debug_sfnames) } + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_macinfo 0 : { *(.debug_macinfo) } + .debug_pubnames 0 : { *(.debug_pubnames) } + .debug_aranges 0 : { *(.debug_aranges) } } EOF |