Using the GNU Compiler Collection (GCC): C6X Options

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#### 3.18.7 C6X Options

`-march=name`

  This specifies the name of the target architecture. GCC uses this name to determine what kind of instructions it can emit when generating assembly code. Permissible names are: ‘`c62x`’, ‘`c64x`’, ‘`c64x+`’, ‘`c67x`’, ‘`c67x+`’, ‘`c674x`’.

`-mbig-endian`

  Generate code for a big-endian target.

`-mlittle-endian`

  Generate code for a little-endian target. This is the default.

`-msim`

  Choose startup files and linker script suitable for the simulator.

`-msdata=default`

  Put small global and static data in the `.neardata` section, which is pointed to by register `B14`. Put small uninitialized global and static data in the `.bss` section, which is adjacent to the `.neardata` section. Put small read-only data into the `.rodata` section. The corresponding sections used for large pieces of data are `.fardata`, `.far` and `.const`.

`-msdata=all`

  Put all data, not just small objects, into the sections reserved for small data, and use addressing relative to the `B14` register to access them.

`-msdata=none`

  Make no use of the sections reserved for small data, and use absolute addresses to access all data. Put all initialized global and static data in the `.fardata` section, and all uninitialized data in the `.far` section. Put all constant data into the `.const` section.