Home Original page

[PATCH 2/2] RISC-V: Support assembler modifier %got_pcrel_hi.

Jim Wilson jimw@sifive.com
Tue Mar 3 22:16:00 GMT 2020 
On Tue, Mar 3, 2020 at 2:22 AM Nelson Chu <nelson.chu@sifive.com> wrote:
>
>         gas/
>         * config/tc-riscv.c: Support the modifier %got_pcrel_hi.
>         * doc/c-riscv.texi: Add documentation.
>         * testsuite/gas/riscv/no-relax-reloc.d: Add test case for the new
>         modifier %got_pcrel_hi.
>         * testsuite/gas/riscv/no-relax-reloc.s: Likewise.
>         * testsuite/gas/riscv/relax-reloc.d: Likewise.
>         * testsuite/gas/riscv/relax-reloc.s: Likewise.

This looks good.  I'd just suggest some minor doc fixes to be
consistent with suggestions for the first patch.

> +@item %got_pcrel_hi(@var{symbol}
> +The high 20-bit of relative address between pc and the GOT entry of
> +@var{symbol}.  This is usually used with the %pcrel_lo to access the GOT entry.

20-bit -> 20 bits
"the %pcrel_lo" -> "%pcrel_lo" or "the %pcrel_lo modifier"

> +@smallexample
> +@var{label}:
> +       auipc           a0, %got_pcrel_hi(@var{symbol}) // R_RISCV_GOT_HI20
> +       addi/load/store a0, a0, %pcrel_lo(@var{label})  // R_RISCV_PCREL_LO12_I/S
> +@end smallexample
> +
> +Also, the pseudo la instruction with PIC has the similar behavior.

"the similar" -> "similar" or "the same"

Jim
More information about the Binutils mailing list