Subversion Repositories openrisc_2011-10-31

TEMPLATE_NAME=elf32

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);"