Using the GNU Compiler Collection (GCC): NDS32 Options

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3.18.31 NDS32 Options

These options are defined for NDS32 implementations:

-mbig-endian

Generate code in big-endian mode.

-mlittle-endian

Generate code in little-endian mode.

-mreduced-regs

Use reduced-set registers for register allocation.

-mfull-regs

Use full-set registers for register allocation.

-mcmov

Generate conditional move instructions.

-mno-cmov

Do not generate conditional move instructions.

-mperf-ext

Generate performance extension instructions.

-mno-perf-ext

Do not generate performance extension instructions.

-mv3push

Generate v3 push25/pop25 instructions.

-mno-v3push

Do not generate v3 push25/pop25 instructions.

-m16-bit

Generate 16-bit instructions.

-mno-16-bit

Do not generate 16-bit instructions.

-misr-vector-size=num

Specify the size of each interrupt vector, which must be 4 or 16.

-mcache-block-size=num

Specify the size of each cache block, which must be a power of 2 between 4 and 512.

-march=arch

Specify the name of the target architecture.

-mcmodel=code-model

Set the code model to one of

‘small’

All the data and read-only data segments must be within 512KB addressing space. The text segment must be within 16MB addressing space.

‘medium’

The data segment must be within 512KB while the read-only data segment can be within 4GB addressing space. The text segment should be still within 16MB addressing space.

‘large’

All the text and data segments can be within 4GB addressing space.

-mctor-dtor

Enable constructor/destructor feature.

-mrelax

Guide linker to relax instructions.

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