| 1 | TEMPLATE_NAME=elf32
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| 2 | GENERATE_SHLIB_SCRIPT=yes
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| 3 | ELFSIZE=64
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| 4 | SCRIPT_NAME=elf
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| 5 | OUTPUT_FORMAT="elf64-mmix"
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| 6 | ENTRY=_start.
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| 7 |
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| 8 | # Default to 0 as mmixal does.
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| 9 | TEXT_START_ADDR='DEFINED (__.MMIX.start..text) ? __.MMIX.start..text : 0'
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| 10 | # Don't add SIZEOF_HEADERS.
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| 11 | # Don't set EMBEDDED, that would be misleading; it's not that kind of system.
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| 12 | TEXT_BASE_ADDRESS=$TEXT_START_ADDR
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| 13 | DATA_ADDR='DEFINED (__.MMIX.start..data) ? __.MMIX.start..data : 0x2000000000000000'
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| 14 |
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| 15 | # Setting this anywhere near the quite reasonable value of 0x10000
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| 16 | # causes the binary to bloat to reach page alignment between segments.
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| 17 | # Let's just have a 256-byte default page alignment. Having some
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| 18 | # alignment at all gives a warm feeling but not much more.
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| 19 | MAXPAGESIZE=256
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| 20 | ARCH=mmix
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| 21 | MACHINE=
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| 22 | COMPILE_IN=yes
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| 23 | EXTRA_EM_FILE=mmixelf
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| 24 |
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| 25 | # The existence of a symbol __start (or _start) should overrule Main, so
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| 26 | # it can be a user symbol without the associated mmixal magic. We
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| 27 | # also want to provide Main as a synonym for _start, if Main wasn't
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| 28 | # defined but is referred to, and _start was defined.
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| 29 | #
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| 30 | # The reason we use a symbol "_start." as a mediator is to avoid
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| 31 | # causing ld to force the type of _start to object rather than no
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| 32 | # type, which confuses disassembly; we also make it alphanumerically
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| 33 | # a successor of _start for similar reasons. Perhaps it's a linker
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| 34 | # bug that linker-defined symbols set the symbol-type.
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| 35 | #
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| 36 | # Note that we smuggle this into OTHER_TEXT_SECTIONS (at the end
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| 37 | # of .text) rather than TEXT_START_SYMBOLS. This is necessary, as
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| 38 | # DEFINED wouldn't find the symbol if it was at the top; presumably
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| 39 | # before the definition, if the definition is not in the first file.
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| 40 | # FIXME: Arguably a linker bug.
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| 41 | OTHER_TEXT_SECTIONS='
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| 42 | _start. = (DEFINED (_start) ? _start
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| 43 | : (DEFINED (Main) ? Main : (DEFINED (.text) ? .text : 0)));
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| 44 | PROVIDE (Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : _start.));
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| 45 | '
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| 46 |
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| 47 | OTHER_SECTIONS='
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| 48 | .MMIX.reg_contents :
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| 49 | {
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| 50 | /* Note that this section always has a fixed VMA - that of its
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| 51 | first register * 8. */
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| 52 | *(.MMIX.reg_contents.linker_allocated);
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| 53 | *(.MMIX.reg_contents);
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| 54 | }
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| 55 | '
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| 56 |
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| 57 | # FIXME: Also bit by the PROVIDE bug? If not, this could be
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| 58 | # EXECUTABLE_SYMBOLS.
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| 59 | # By default, put the high end of the stack where the register stack
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| 60 | # begins. They grow in opposite directions. */
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| 61 | OTHER_END_SYMBOLS="PROVIDE (__Stack_start = 0x6000000000000000);"
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