From: Aleksandar Markovic <amarkovic@wavecomp.com>

Add nanoMIPS-related values in ELF header fields as specified in
nanoMIPS' "ELF ABI Supplement".

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
---
 include/elf.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/include/elf.h b/include/elf.h
index 2c4fe7a..fff5967 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -62,6 +62,24 @@ typedef int64_t  Elf64_Sxword;
 #define EF_MIPS_NAN2008   0x00000400
 #define EF_MIPS_ARCH      0xf0000000
 
+/* nanoMIPS architecture bits, EF_NANOMIPS_ARCH */
+#define EF_NANOMIPS_ARCH_32R6 0x00000000  /* 32-bit nanoMIPS Release 6 ISA   */
+#define EF_NANOMIPS_ARCH_64R6 0x10000000  /* 62-bit nanoMIPS Release 6 ISA   */
+
+/* nanoMIPS ABI bits, EF_NANOMIPS_ABI */
+#define EF_NANOMIPS_ABI_P32   0x00001000  /* 32-bit nanoMIPS ABI             */
+#define EF_NANOMIPS_ABI_P64   0x00002000  /* 64-bit nanoMIPS ABI             */
+
+/* nanoMIPS processor specific flags, e_flags */
+#define EF_NANOMIPS_LINKRELAX 0x00000001  /* Link-time relaxation            */
+#define EF_NANOMIPS_PIC       0x00000002  /* Position independant code       */
+#define EF_NANOMIPS_32BITMODE 0x00000004  /* 32-bit object for 64-bit arch.  */
+#define EF_NANOMIPS_PID       0x00000008  /* Position independant data       */
+#define EF_NANOMIPS_PCREL     0x00000010  /* PC-relative mode                */
+#define EF_NANOMIPS_ABI       0x0000f000  /* nanoMIPS ABI                    */
+#define EF_NANOMIPS_MACH      0x00ff0000  /* Machine variant                 */
+#define EF_NANOMIPS_ARCH      0xf0000000  /* nanoMIPS architecture           */
+
 /* MIPS machine variant */
 #define EF_MIPS_MACH_NONE     0x00000000  /* A standard MIPS implementation  */
 #define EF_MIPS_MACH_3900     0x00810000  /* Toshiba R3900                   */
@@ -143,6 +161,8 @@ typedef int64_t  Elf64_Sxword;
 
 #define EM_RISCV        243     /* RISC-V */
 
+#define EM_NANOMIPS     249     /* Wave Computing nanoMIPS */
+
 /*
  * This is an interim value that we will use until the committee comes
  * up with a final number.
-- 
2.7.4

On 07/19/2018 05:55 AM, Stefan Markovic wrote:
> From: Aleksandar Markovic <amarkovic@wavecomp.com>
> 
> Add nanoMIPS-related values in ELF header fields as specified in
> nanoMIPS' "ELF ABI Supplement".
> 
> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
> Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
> ---
>  include/elf.h | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)

None of these values have made it upstream to binutils yet,
so I can't double-check them.  However,

Acked-by: Richard Henderson <richard.henderson@linaro.org>


r~

> From: Richard Henderson <richard.henderson@linaro.org>
> Sent: Monday, July 23, 2018 6:59 PM
> On 07/19/2018 05:55 AM, Stefan Markovic wrote:
> > From: Aleksandar Markovic <amarkovic@wavecomp.com>
> >
> > Add nanoMIPS-related values in ELF header fields as specified in
> > nanoMIPS' "ELF ABI Supplement".
> >
> > Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
> > Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
> > ---
> >  include/elf.h | 20 ++++++++++++++++++++
> >  1 file changed, 20 insertions(+)
>
> None of these values have made it upstream to binutils yet,
> so I can't double-check them.  However,
>
> Acked-by: Richard Henderson <richard.henderson@linaro.org>
>
>
> r~

Hi, Richard.

True, binutils headers were not updated with these ELF-related values. However, there is a publicly-available document at https://codescape.mips.com/components/toolchain/nanomips/2018.04-02/releasenotes.html that should be the source of information for binutils headers, or any other related header in similar tools. Specifically, see Section 5.1 of that document.

Regards,
Aleksandar

> From: Aleksandar Markovic
> Sent: Monday, July 23, 2018 7:39 PM
>
> > From: Richard Henderson <richard.henderson@linaro.org>
> > Sent: Monday, July 23, 2018 6:59 PM
> > On 07/19/2018 05:55 AM, Stefan Markovic wrote:
> > > From: Aleksandar Markovic <amarkovic@wavecomp.com>
> > >
> > > Add nanoMIPS-related values in ELF header fields as specified in
> > > nanoMIPS' "ELF ABI Supplement".
> > >
> > > Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
> > > Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
> > > ---
> > >  include/elf.h | 20 ++++++++++++++++++++
> > >  1 file changed, 20 insertions(+)
> >
> > None of these values have made it upstream to binutils yet,
> > so I can't double-check them.  However,
> >
> > Acked-by: Richard Henderson <richard.henderson@linaro.org>
> >
> >
> > r~
>
> Hi, Richard.
>
> True, binutils headers were not updated with these ELF-related values. However, there is a publicly-available > document at https://codescape.mips.com/components/toolchain/nanomips/2018.04-02/releasenotes.html that should be > the source of information for binutils headers, or any other related header in similar tools. Specifically, see > Section 5.1 of that document.
>
> Regards,
> Aleksandar

I meant to link here to "nanoMIPS ABI Supplement":

https://codescape.mips.com/components/toolchain/nanomips/2018.04-02/docs/MIPS_nanoMIPS_ABI_supplement_01_02_DN00179.pdf