NDS32 Features (Debugging with GDB)

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#### G.5.9 NDS32 Features

The ‘`org.gnu.gdb.nds32.core`’ feature is required for NDS32 targets. It should contain at least registers ‘`r0`’ through ‘`r10`’, ‘`r15`’, ‘`fp`’, ‘`gp`’, ‘`lp`’, ‘`sp`’, and ‘`pc`’.

The ‘`org.gnu.gdb.nds32.fpu`’ feature is optional. If present, it should contain 64-bit double-precision floating-point registers ‘`fd0`’ through fdN, which should be ‘`fd3`’, ‘`fd7`’, ‘`fd15`’, or ‘`fd31`’ based on the FPU configuration implemented.

Note: The first sixteen 64-bit double-precision floating-point registers are overlapped with the thirty-two 32-bit single-precision floating-point registers. The 32-bit single-precision registers, if not being listed explicitly, will be synthesized from halves of the overlapping 64-bit double-precision registers. Listing 32-bit single-precision registers explicitly is deprecated, and the support to it could be totally removed some day.