This series adds support for RISC-V Semihosting, version 0.2 as specified here:
https://github.com/riscv/riscv-semihosting-spec/releases/tag/0.2 This specification references the ARM semihosting release 2.0 as specified here: https://static.docs.arm.com/100863/0200/semihosting.pdf That specification includes several semihosting calls which were not previously implemented. This series includes implementations for the remaining calls so that both RISC-V and ARM versions are now complete. Tests for release 2.0 can be found in picolibc on the semihost-2.0-all branch: https://github.com/picolibc/picolibc/tree/semihost-2.0-all These tests uncovered a bug in the SYS_HEAPINFO implementation for ARM, which has been fixed in this series as well. The series is structured as follows: 1. Move shared semihosting files 2. Change public common semihosting APIs 3. Change internal semihosting interfaces 4. Fix SYS_HEAPINFO crash on ARM 5-6. Add RISC-V semihosting implementation 7-9. Add missing semihosting operations from release 2.0