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/GCC 7

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.

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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gcc/C6X-Options.html