riscv_ztso_minor_fix

Fix: Set ELF flag of Ztso on .option arch

• Status: Merged for Binutils 2.40
• Branch: riscv-ztso-minor-fix
• Tracking PR: None
• Mailing List:
  • PATCH v1 (2022-09-21)

Issue Solved

Currently, it sets EF_RISCV_TSO ELF flag when initial ISA string contains the Ztso extension. However, GAS has a way to update the ISA string: .option arch.

When the architecture is updated by .option arch, EF_RISCV_RVC ELF flag is set when the C extension is detected. Analogously, this patchset sets the EF_RISCV_TSO when the Ztso extension is detected.

With this patch, the Ztso extension support will be complete.