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RISC-V: Implement Ztso extension

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This patch support ZTSO extension. It will turn on the tso flag for elf_flags
once we have enabled Ztso extension.  This is intended to implement v0.1 of
the proposed specification which can be found in Chapter 25 of,
https://github.com/riscv/riscv-isa-manual/releases/download/draft-20220723-10eea63/riscv-spec.pdf.

bfd\ChangeLog:

        * elfnn-riscv.c (_bfd_riscv_elf_merge_private_bfd_data): Set TSO flag.
        * elfxx-riscv.c: Add Ztso's arch.

binutils\ChangeLog:

        * readelf.c (get_machine_flags): Set TSO flag.

gas\ChangeLog:

        * config/tc-riscv.c (riscv_set_tso): Ditto.
        (riscv_set_arch): Ditto.
        * testsuite/gas/riscv/ztso.d: New test.

include\ChangeLog:

        * elf/riscv.h (EF_RISCV_TSO): Ditto.
This commit is contained in:
Shihua
2022-09-20 17:45:04 +08:00
committed by Nelson Chu
parent 70f35d72ef
commit 96462b0129
6 changed files with 29 additions and 0 deletions
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3
binutils/readelf.c
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@@ -4079,6 +4079,9 @@ get_machine_flags (Filedata * filedata, unsigned e_flags, unsigned e_machine)
if (e_flags & EF_RISCV_RVE)
strcat (buf, ", RVE");
if (e_flags & EF_RISCV_TSO)
strcat (buf, ", TSO");
switch (e_flags & EF_RISCV_FLOAT_ABI)
{
case EF_RISCV_FLOAT_ABI_SOFT: