[crypto] Add testcase and some fix - #264

[crypto] Add testcase and some fix#264

WuSiYu wants to merge 19 commits into

riscvarchive:riscv-gcc-experimentriscvarchive/riscv-gcc:riscv-gcc-experimentfrom

WuSiYu:riscv-gcc-10.2.0-cryptoWuSiYu/riscv-gcc:riscv-gcc-10.2.0-cryptoCopy head branch name to clipboard