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.
5SCRIPT_NAME=elf
6
7# Handle both big- and little-ended 32-bit MIPS objects.
8ARCH=mips
9OUTPUT_FORMAT="elf32-bigmips"
10BIG_OUTPUT_FORMAT="elf32-bigmips"
11LITTLE_OUTPUT_FORMAT="elf32-littlemips"
12
13TEMPLATE_NAME=elf32
14EXTRA_EM_FILE=mipself
15
16case x"$EMULATION_NAME" in
17xelf32*n32*) ELFSIZE=32 ;;
18xelf64*) ELFSIZE=64 ;;
19x) ;;
20*) echo $0: unhandled emulation $EMULATION_NAME >&2; exit 1 ;;
21esac
22
23if test `echo "$host" | sed -e s/64//` = `echo "$target" | sed -e s/64//`; then
24  case " $EMULATION_LIBPATH " in
25    *" ${EMULATION_NAME} "*)
26      NATIVE=yes
27      ;;
28  esac
29fi
30
31# Look for 64 bit target libraries in /lib64, /usr/lib64 etc., first.
32LIBPATH_SUFFIX=$ELFSIZE
33
34GENERATE_SHLIB_SCRIPT=yes
35GENERATE_PIE_SCRIPT=yes
36
37TEXT_START_ADDR=0x10000000
38MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
39ENTRY=__start
40
41# Unlike most targets, the MIPS backend puts all dynamic relocations
42# in a single dynobj section, which it also calls ".rel.dyn".  It does
43# this so that it can easily sort all dynamic relocations before the
44# output section has been populated.
45OTHER_GOT_RELOC_SECTIONS="
46  .rel.dyn      ${RELOCATING-0} : { *(.rel.dyn) }
47"
48# GOT-related settings.
49# If the output has a GOT section, there must be exactly 0x7ff0 bytes
50# between .got and _gp.  The ". = ." below stops the orphan code from
51# inserting other sections between the assignment to _gp and the start
52# of .got.
53OTHER_GOT_SYMBOLS='
54  . = .;
55  HIDDEN (_gp = ALIGN (16) + 0x7ff0);
56'
57# .got.plt is only used for the PLT psABI extension.  It should not be
58# included in the .sdata block with .got, as there is no need to access
59# the section from _gp.  Note that the traditional:
60#
61#      . = .
62#      _gp = ALIGN (16) + 0x7ff0;
63#      .got : { *(.got.plt) *(.got) }
64#
65# would set _gp to the wrong value; _gp - 0x7ff0 must point to the start
66# of *(.got).
67GOT=".got          ${RELOCATING-0} : { *(.got) }"
68unset OTHER_READWRITE_SECTIONS
69unset OTHER_RELRO_SECTIONS
70if test -n "$RELRO_NOW"; then
71  OTHER_RELRO_SECTIONS=".got.plt      ${RELOCATING-0} : { *(.got.plt) }"
72else
73  OTHER_READWRITE_SECTIONS=".got.plt      ${RELOCATING-0} : { *(.got.plt) }"
74fi
75
76OTHER_SDATA_SECTIONS="
77  .lit8         ${RELOCATING-0} : { *(.lit8) }
78  .lit4         ${RELOCATING-0} : { *(.lit4) }
79  .srdata       ${RELOCATING-0} : { *(.srdata) }
80"
81
82# Magic symbols.
83TEXT_START_SYMBOLS='_ftext = . ;'
84DATA_START_SYMBOLS='_fdata = . ;'
85OTHER_BSS_SYMBOLS='_fbss = .;'
86
87INITIAL_READONLY_SECTIONS=
88if test -z "${CREATE_SHLIB}"; then
89  INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"
90fi
91INITIAL_READONLY_SECTIONS="${INITIAL_READONLY_SECTIONS}
92  .MIPS.abiflags      ${RELOCATING-0} : { *(.MIPS.abiflags) }
93  .reginfo      ${RELOCATING-0} : { *(.reginfo) }"
94# Discard any .MIPS.content* or .MIPS.events* sections.  The linker
95# doesn't know how to adjust them.
96OTHER_SECTIONS="/DISCARD/ : { *(.MIPS.content*) *(.MIPS.events*) }"
97
98TEXT_DYNAMIC=
99