riscv_h_canonical

Extension Handling: Canonical ordering of H

• Status: Merged for 2.39
• Branch: riscv-h-canonical
• Tracking PR: #15 (view Pull Request and Diff)
• Mailing List:
  • PATCH v1 (2022-06-01)

Issue Solved

For canonical ordering of Zhinx extension (and future Zhinxmin extension), it requires determining canonical order of H. I raised an issue and made a consensus that H will be placed after V. Considering current software compatibility, P, V, N then H ordering is good for toolchain.

On GNU Binutils, this requires adding h character to riscv_ext_canonical_order in bfd/elfxx.c.