3.17.6 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.

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