Re: [Qemu-devel] [PATCH v2] elf: Add RISC-V PSABI ELF header defines

[Laurent Vivier <laurent@vivier.eu>]

Le 25/05/2018 à 09:22, Michael Clark a écrit :
> Refer to the RISC-V PSABI specification for details:
> 
> - https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md
> 
> Cc: Michael Tokarev <mjt@tls.msk.ru>
> Cc: Laurent Vivier <laurent@vivier.eu>
> Cc: Richard Henderson <richard.henderson@linaro.org>
> Cc: Alistair Francis <Alistair.Francis@wdc.com>
> Signed-off-by: Michael Clark <mjc@sifive.com>
> ---
>  include/elf.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/include/elf.h b/include/elf.h
> index 934dbbd6b3ae..bd0493f43d19 100644
> --- a/include/elf.h
> +++ b/include/elf.h
> @@ -1285,6 +1285,14 @@ typedef struct {
>  #define R_IA64_DTPREL64LSB	0xb7	/* @dtprel(sym + add), data8 LSB */
>  #define R_IA64_LTOFF_DTPREL22	0xba	/* @ltoff(@dtprel(s+a)), imm22 */
>  
> +/* RISC-V specific definitions.  */
> +#define EF_RISCV_RVC 0x0001
> +#define EF_RISCV_FLOAT_ABI_SINGLE 0x0002
> +#define EF_RISCV_FLOAT_ABI_DOUBLE 0x0004
> +#define EF_RISCV_FLOAT_ABI_QUAD 0x0006
> +#define EF_RISCV_RVE 0x0008
> +#define EF_RISCV_TSO 0x0010
> +
>  typedef struct elf32_rel {
>    Elf32_Addr	r_offset;
>    Elf32_Word	r_info;
> 

from glibc (and binutils), I have:

  /* RISC-V ELF Flags */
  #define EF_RISCV_RVC                    0x0001
  #define EF_RISCV_FLOAT_ABI              0x0006
  #define EF_RISCV_FLOAT_ABI_SOFT         0x0000
  #define EF_RISCV_FLOAT_ABI_SINGLE       0x0002
  #define EF_RISCV_FLOAT_ABI_DOUBLE       0x0004
  #define EF_RISCV_FLOAT_ABI_QUAD         0x0006

Perhaps you can also define EF_RISCV_FLOAT_ABI_SOFT and EF_RISCV_FLOAT_ABI?

Anyway:

Reviewed-by: Laurent Vivier <laurent@vivier.eu>