| 1 | # If you change this file, please also look at files which source this one: |
| 2 | # elf64bmip.sh elf64btsmip.sh elf32btsmipn32.sh elf32bmipn32.sh |
| 3 | |
| 4 | # This is an ELF platform. |
| 5 | SCRIPT_NAME=elf |
| 6 | |
| 7 | # Handle both big- and little-ended 32-bit MIPS objects. |
| 8 | ARCH=mips |
| 9 | OUTPUT_FORMAT="elf32-bigmips" |
| 10 | BIG_OUTPUT_FORMAT="elf32-bigmips" |
| 11 | LITTLE_OUTPUT_FORMAT="elf32-littlemips" |
| 12 | |
| 13 | TEMPLATE_NAME=elf |
| 14 | EXTRA_EM_FILE=mipself |
| 15 | |
| 16 | # Note: use "x$var" not x"$var" in case directive in order to work around bug in bash 4.2 |
| 17 | case "x$EMULATION_NAME" in |
| 18 | xelf32*n32*) ELFSIZE=32 ;; |
| 19 | xelf64*) ELFSIZE=64 ;; |
| 20 | x) ;; |
| 21 | *) echo $0: unhandled emulation $EMULATION_NAME >&2; exit 1 ;; |
| 22 | esac |
| 23 | |
| 24 | if test `echo "$host" | sed -e s/64//` = `echo "$target" | sed -e s/64//`; then |
| 25 | case " $EMULATION_LIBPATH " in |
| 26 | *" ${EMULATION_NAME} "*) |
| 27 | NATIVE=yes |
| 28 | ;; |
| 29 | esac |
| 30 | fi |
| 31 | |
| 32 | # Look for 64 bit target libraries in /lib64, /usr/lib64 etc., first. |
| 33 | LIBPATH_SUFFIX=$ELFSIZE |
| 34 | |
| 35 | GENERATE_SHLIB_SCRIPT=yes |
| 36 | GENERATE_PIE_SCRIPT=yes |
| 37 | |
| 38 | TEXT_START_ADDR=0x10000000 |
| 39 | MAXPAGESIZE="CONSTANT (MAXPAGESIZE)" |
| 40 | ENTRY=__start |
| 41 | |
| 42 | # Unlike most targets, the MIPS backend puts all dynamic relocations |
| 43 | # in a single dynobj section, which it also calls ".rel.dyn". It does |
| 44 | # this so that it can easily sort all dynamic relocations before the |
| 45 | # output section has been populated. |
| 46 | OTHER_GOT_RELOC_SECTIONS=" |
| 47 | .rel.dyn ${RELOCATING-0} : { *(.rel.dyn) } |
| 48 | " |
| 49 | # GOT-related settings. |
| 50 | # If the output has a GOT section, there must be exactly 0x7ff0 bytes |
| 51 | # between .got and _gp. |
| 52 | OTHER_GOT_SYMBOLS='HIDDEN (_gp = ALIGN (16) + 0x7ff0);' |
| 53 | |
| 54 | # .got.plt is only used for the PLT psABI extension. It should not be |
| 55 | # included in the .sdata block with .got, as there is no need to access |
| 56 | # the section from _gp. Note that the traditional: |
| 57 | # |
| 58 | # . = . |
| 59 | # _gp = ALIGN (16) + 0x7ff0; |
| 60 | # .got : { *(.got.plt) *(.got) } |
| 61 | # |
| 62 | # would set _gp to the wrong value; _gp - 0x7ff0 must point to the start |
| 63 | # of *(.got). |
| 64 | GOT=".got ${RELOCATING-0} : { *(.got) }" |
| 65 | unset OTHER_READWRITE_SECTIONS |
| 66 | unset OTHER_RELRO_SECTIONS |
| 67 | if test -n "$RELRO_NOW"; then |
| 68 | OTHER_RELRO_SECTIONS=".got.plt ${RELOCATING-0} : { *(.got.plt) }" |
| 69 | else |
| 70 | OTHER_READWRITE_SECTIONS=".got.plt ${RELOCATING-0} : { *(.got.plt) }" |
| 71 | fi |
| 72 | |
| 73 | OTHER_SDATA_SECTIONS=" |
| 74 | .lit8 ${RELOCATING-0} : { *(.lit8) } |
| 75 | .lit4 ${RELOCATING-0} : { *(.lit4) } |
| 76 | .srdata ${RELOCATING-0} : { *(.srdata) } |
| 77 | " |
| 78 | |
| 79 | # Magic symbols. |
| 80 | TEXT_START_SYMBOLS="${CREATE_SHLIB+PROVIDE (}_ftext = .${CREATE_SHLIB+)};" |
| 81 | DATA_START_SYMBOLS="${CREATE_SHLIB+PROVIDE (}_fdata = .${CREATE_SHLIB+)};" |
| 82 | OTHER_BSS_SYMBOLS="${CREATE_SHLIB+PROVIDE (}_fbss = .${CREATE_SHLIB+)};" |
| 83 | |
| 84 | INITIAL_READONLY_SECTIONS= |
| 85 | if test -z "${CREATE_SHLIB}"; then |
| 86 | INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp) }" |
| 87 | fi |
| 88 | INITIAL_READONLY_SECTIONS="${INITIAL_READONLY_SECTIONS} |
| 89 | .MIPS.abiflags ${RELOCATING-0} : { *(.MIPS.abiflags) } |
| 90 | .MIPS.xhash ${RELOCATING-0} : { *(.MIPS.xhash) } |
| 91 | .reginfo ${RELOCATING-0} : { *(.reginfo) }" |
| 92 | # Discard any .MIPS.content* or .MIPS.events* sections. The linker |
| 93 | # doesn't know how to adjust them. |
| 94 | OTHER_SECTIONS="/DISCARD/ : { *(.MIPS.content*) *(.MIPS.events*) }" |
| 95 | |
| 96 | TEXT_DYNAMIC= |