1TEMPLATE_NAME=elf32
2GENERATE_SHLIB_SCRIPT=yes
3ELFSIZE=64
4SCRIPT_NAME=elf
5OUTPUT_FORMAT="elf64-mmix"
6ENTRY=_start.
7
8# Default to 0 as mmixal does.
9TEXT_START_ADDR='DEFINED (__.MMIX.start..text) ? __.MMIX.start..text : 0'
10# Don't add SIZEOF_HEADERS.
11# Don't set EMBEDDED, that would be misleading; it's not that kind of system.
12TEXT_BASE_ADDRESS=$TEXT_START_ADDR
13DATA_ADDR='DEFINED (__.MMIX.start..data) ? __.MMIX.start..data : 0x2000000000000000'
14
15# Setting this anywhere near the quite reasonable value of 0x10000
16# causes the binary to bloat to reach page alignment between segments.
17# Let's just have a 256-byte default page alignment.  Having some
18# alignment at all gives a warm feeling but not much more.
19MAXPAGESIZE=256
20ARCH=mmix
21MACHINE=
22COMPILE_IN=yes
23EXTRA_EM_FILE=mmixelf
24
25# The existence of a symbol __start (or _start) should overrule Main, so
26# it can be a user symbol without the associated mmixal magic.  We
27# also want to provide Main as a synonym for _start, if Main wasn't
28# defined but is referred to, and _start was defined.
29#
30# The reason we use a symbol "_start." as a mediator is to avoid
31# causing ld to force the type of _start to object rather than no
32# type, which confuses disassembly; we also make it alphanumerically
33# a successor of _start for similar reasons.  Perhaps it's a linker
34# bug that linker-defined symbols set the symbol-type.
35#
36# Note that we smuggle this into OTHER_TEXT_SECTIONS (at the end
37# of .text) rather than TEXT_START_SYMBOLS.  This is necessary, as
38# DEFINED wouldn't find the symbol if it was at the top; presumably
39# before the definition, if the definition is not in the first file.
40# FIXME: Arguably a linker bug.
41OTHER_TEXT_SECTIONS='
42 _start. = (DEFINED (_start) ? _start
43            : (DEFINED (Main) ? Main : (DEFINED (.text) ? .text : 0)));
44 PROVIDE (Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : _start.));
45'
46
47OTHER_SECTIONS='
48 .MMIX.reg_contents :
49 {
50   /* Note that this section always has a fixed VMA - that of its
51      first register * 8.  */
52   *(.MMIX.reg_contents.linker_allocated);
53   *(.MMIX.reg_contents);
54 }
55'
56
57# FIXME: Also bit by the PROVIDE bug?  If not, this could be
58# EXECUTABLE_SYMBOLS.
59# By default, put the high end of the stack where the register stack
60# begins.  They grow in opposite directions.  */
61OTHER_END_SYMBOLS="PROVIDE (__Stack_start = 0x6000000000000000);"
62