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

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

[Michael Clark]

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;
-- 
2.7.0

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

[Laurent Vivier]

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>

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

[Michael Clark]

On Fri, May 25, 2018 at 7:53 PM, Laurent Vivier <laurent@vivier.eu> wrote:

> 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?
>

Will do. I'll align them also.

Anyway:
>
> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
>
>
Thanks for checking glibc and binutils. I'll update to add the extra
definitions before I make a PR. Thanks!

Michael.