elf64mmix.sh revision 1.1.1.5
1TEMPLATE_NAME=elf 2GENERATE_SHLIB_SCRIPT=yes 3ELFSIZE=64 4SCRIPT_NAME=elf 5OUTPUT_FORMAT="elf64-mmix" 6NO_REL_RELOCS=yes 7ENTRY=_start. 8 9# Default to 0 as mmixal does. 10TEXT_START_ADDR='DEFINED (__.MMIX.start..text) ? __.MMIX.start..text : 0' 11# Don't add SIZEOF_HEADERS. 12# Don't set EMBEDDED, that would be misleading; it's not that kind of system. 13TEXT_BASE_ADDRESS=$TEXT_START_ADDR 14DATA_ADDR='DEFINED (__.MMIX.start..data) ? __.MMIX.start..data : 0x2000000000000000' 15 16MAXPAGESIZE="CONSTANT (MAXPAGESIZE)" 17ARCH=mmix 18MACHINE= 19EXTRA_EM_FILE=mmixelf 20 21# The existence of a symbol __start (or _start) should overrule Main, so 22# it can be a user symbol without the associated mmixal magic. We 23# also want to provide Main as a synonym for _start, if Main wasn't 24# defined but is referred to, and _start was defined. 25# 26# The reason we use a symbol "_start." as a mediator is to avoid 27# causing ld to force the type of _start to object rather than no 28# type, which confuses disassembly; we also make it alphanumerically 29# a successor of _start for similar reasons. Perhaps it's a linker 30# bug that linker-defined symbols set the symbol-type. 31# 32# Note that we smuggle this into OTHER_TEXT_SECTIONS (at the end 33# of .text) rather than TEXT_START_SYMBOLS. This is necessary, as 34# DEFINED wouldn't find the symbol if it was at the top; presumably 35# before the definition, if the definition is not in the first file. 36# FIXME: Arguably a linker bug. 37# Only do this for a final link, or else we'll mess up e.g. error 38# messages. 39OTHER_TEXT_SECTIONS=" 40${RELOCATING+ 41 _start. = (DEFINED (_start) ? _start 42 : (DEFINED (Main) ? Main : (DEFINED (.text) ? .text : 0))); 43 PROVIDE (Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : _start.)); 44}" 45 46# We need a symbol at the end of the read-only data, which is 47# colocated with the code. We make __etext fit. 48ETEXT_LAST_IN_RODATA_SEGMENT=" " 49 50OTHER_SECTIONS=' 51 .MMIX.reg_contents : 52 { 53 /* Note that this section always has a fixed VMA - that of its 54 first register * 8. */ 55 *(.MMIX.reg_contents.linker_allocated); 56 *(.MMIX.reg_contents); 57 } 58' 59 60# FIXME: Also bit by the PROVIDE bug? If not, this could be 61# EXECUTABLE_SYMBOLS. 62# By default, put the high end of the stack where the register stack 63# begins. They grow in opposite directions. */ 64OTHER_SYMBOLS="PROVIDE (__Stack_start = 0x6000000000000000);" 65