TEMPLATE_NAME=elf GENERATE_SHLIB_SCRIPT=yes ELFSIZE=64 SCRIPT_NAME=elf OUTPUT_FORMAT="elf64-mmix" NO_REL_RELOCS=yes ENTRY=_start. # Default to 0 as mmixal does. TEXT_START_ADDR='DEFINED (__.MMIX.start..text) ? __.MMIX.start..text : 0' # Don't add SIZEOF_HEADERS. # Don't set EMBEDDED, that would be misleading; it's not that kind of system. TEXT_BASE_ADDRESS=$TEXT_START_ADDR DATA_ADDR='DEFINED (__.MMIX.start..data) ? __.MMIX.start..data : 0x2000000000000000' MAXPAGESIZE="CONSTANT (MAXPAGESIZE)" ARCH=mmix MACHINE= COMPILE_IN=yes EXTRA_EM_FILE=mmixelf # The existence of a symbol __start (or _start) should overrule Main, so # it can be a user symbol without the associated mmixal magic. We # also want to provide Main as a synonym for _start, if Main wasn't # defined but is referred to, and _start was defined. # # The reason we use a symbol "_start." as a mediator is to avoid # causing ld to force the type of _start to object rather than no # type, which confuses disassembly; we also make it alphanumerically # a successor of _start for similar reasons. Perhaps it's a linker # bug that linker-defined symbols set the symbol-type. # # Note that we smuggle this into OTHER_TEXT_SECTIONS (at the end # of .text) rather than TEXT_START_SYMBOLS. This is necessary, as # DEFINED wouldn't find the symbol if it was at the top; presumably # before the definition, if the definition is not in the first file. # FIXME: Arguably a linker bug. # Only do this for a final link, or else we'll mess up e.g. error # messages. OTHER_TEXT_SECTIONS=" ${RELOCATING+ _start. = (DEFINED (_start) ? _start : (DEFINED (Main) ? Main : (DEFINED (.text) ? .text : 0))); PROVIDE (Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : _start.)); }" OTHER_SECTIONS=' .MMIX.reg_contents : { /* Note that this section always has a fixed VMA - that of its first register * 8. */ *(.MMIX.reg_contents.linker_allocated); *(.MMIX.reg_contents); } ' # FIXME: Also bit by the PROVIDE bug? If not, this could be # EXECUTABLE_SYMBOLS. # By default, put the high end of the stack where the register stack # begins. They grow in opposite directions. */ OTHER_SYMBOLS="PROVIDE (__Stack_start = 0x6000000000000000);"