GNU Info

(ld.info)MMIX

---

Next: TI COFF Prev: HPPA ELF32 Up: Machine Dependent

---

Enter node , (file) or (file)node

`ld' and MMIX
=============

   For MMIX, there is choice of generating `ELF' object files or `mmo'
object files when linking.  The simulator `mmix' understands the `mmo'
format.  The binutils `objcopy' utility can translate between the two
formats.

   There is one special section, the `.MMIX.reg_contents' section.
Contents in this section is assumed to correspond to that of global
registers, and symbols referring to it are translated to special
symbols, equal to registers.  In a final link, the start address of the
`.MMIX.reg_contents' section corresponds to the first allocated global
register multiplied by 8.  Register `$255' is not included in this
section; it is always set to the program entry, which is at the symbol
`Main' for `mmo' files.

   Symbols with the prefix `__.MMIX.start.', for example
`__.MMIX.start..text' and `__.MMIX.start..data' are special; there must
be only one each, even if they are local.  The default linker script
uses these to set the default start address of a section.

   Initial and trailing multiples of zero-valued 32-bit words in a
section, are left out from an mmo file.