arch/risc-v: Refine Toolchain.defs

[no1wudi]

Summary

Refine risc-v Toolchain.defs firstly, and it tested on qemu-rv32.
And then:

1. Apply new Toolchain.defs to all risc-v based chips
2. Merge the common src for rv32/rv64 (riscv_syscall.S/riscv_fpu.S etc, in rv32im and rv64gc)
3. Apply new common src to qemu-rv32 and qemu-rv64
4. Migrate all risc-v based chips to new implementation and remove old

Impact

Refactor only.

Testing

Tested on qemu-rv32 and CI

[xiaoxiang781216]

Look like we should finish this PR: #2822

[no1wudi]

Look like we should finish this PR: #2822

This PR will be finished in next phase, I will pick it later.

[no1wudi]

Waiting for #5082 , and this patch will be rebased on it.

[xiaoxiang781216]

@no1wudi there are some build error need to fix first.

[no1wudi]

@no1wudi there are some build error need to fix first.

Fixed

[normanr]

This is giving me:

$ make menuconfig
/home/normanr/src/nuttx/nuttx/tools/../Make.defs:23: /home/normanr/src/nuttx/nuttx/tools/../arch/risc-v/src/rv32im/Toolchain.defs: No such file or directory
make: *** No rule to make target '/home/normanr/src/nuttx/nuttx/tools/../arch/risc-v/src/rv32im/Toolchain.defs'.  Stop.
/home/normanr/src/nuttx/nuttx/Make.defs:23: /home/normanr/src/nuttx/nuttx/arch/risc-v/src/rv32im/Toolchain.defs: No such file or directory
make: *** No rule to make target '/home/normanr/src/nuttx/nuttx/arch/risc-v/src/rv32im/Toolchain.defs'.  Stop.

Is there anything special I need to do to clear out old state? I just tried make menuconfig and make.

[xiaoxiang781216]

This patch merge Toolchain.defs from rv32im/rv64gc to common, so you may need make distclean and reconfigure again.

[normanr]

I couldn't run make distclean because of the same reason, also deleting it broke things worse. I had to re-copy the Make.defs from the arch directory, and that fixed things.

[xiaoxiang781216]

Yes, copy Mak.defs can fix this problem too.