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Re: [PATCH, RX] Add target rx-*-linux
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On Mon, 30 Jul 2018 22:02:54 +0900,
Oleg Endo wrote:
>
> Hi,
>
> I've been using RX myself for a while and I'm wondering where this is
> coming from or where this is going?
>
> The biggest RX MCU device as of today has 4 MB ROM and 512 RAM.
> External memory can be added to these devices, but it seems
> impractically slow for general purpose use. So I wonder, what kind of
> Linux is this?
It standrad linux kernel.
My target is RX62N + 16MByte external memory.
I think that connecting with a 32 bit bus is not so slow.
Also, since the code size is small, I think the influence of memory speed
is relaxed.
I think that it is 10% smaller than other CPUs.
yo-satoh@yo-satoh-debian:~/linux (rx)$ rx-unknown-linux-size vmlinux
text data bss dec hex filename
801156 68556 164568 1034280 fc828 vmlinux
> Any information is highly appreciated.
>
> Cheers,
> Oleg
>
> On Mon, 2018-07-30 at 17:58 +0900, Yoshinori Sato wrote:
> > Hello.
> >
> > I want added rx-*-linux target.
> > rx-elf is compatible Renesas toolchain. It different standard ELF
> > format.
> > rx-*-linux have standard ELF format for RX processor.
> >
> > diff --git a/bfd/ChangeLog b/bfd/ChangeLog
> > index 34b0465ba4..28439fb20c 100644
> > --- a/bfd/ChangeLog
> > +++ b/bfd/ChangeLog
> > @@ -1,3 +1,12 @@
> > +2018-07-30 Yoshinori Sato <ysato@users.sourceforge.jp>
> > +
> > + * config.bfd: Add rx-*-linux.
> > + * congigure.ac: Likewise.
> > + * elf32-rx.c (rx_linux_object_p): New function.
> > + (TARGET_LITTLE_SYM, TARGET_LITTLE_NAME)
> > + (elf_backend_object_p, elf32_bed): Define rx-*-linux.
> > + * targets.c: Add rx_elf32_linux_le_vec.
> > +
> > 2018-07-27 John Darrington <john@darrington.wattle.id.au>
> >
> > * elf32-s12z.c (ELF_TARGET_ID): Don't define.
> > diff --git a/bfd/config.bfd b/bfd/config.bfd
> > index 6391f35684..4ab636c62a 100644
> > --- a/bfd/config.bfd
> > +++ b/bfd/config.bfd
> > @@ -1196,6 +1196,10 @@ case "${targ}" in
> > targ_selvecs="rx_elf32_be_vec rx_elf32_le_vec
> > rx_elf32_be_ns_vec"
> > targ_underscore=yes
> > ;;
> > + rx-*-linux*)
> > + targ_defvec=rx_elf32_linux_le_vec
> > + targ_selvecs="rx_elf32_linux_le_vec"
> > + ;;
> >
> > s390-*-linux*)
> > targ_defvec=s390_elf32_vec
> > diff --git a/bfd/configure.ac b/bfd/configure.ac
> > index c6193cd8a4..d18b726a35 100644
> > --- a/bfd/configure.ac
> > +++ b/bfd/configure.ac
> > @@ -610,6 +610,7 @@ do
> > rx_elf32_be_vec) tb="$tb elf32-rx.lo elf32.lo
> > $elf" ;;
> > rx_elf32_be_ns_vec) tb="$tb elf32-rx.lo elf32.lo
> > $elf" ;;
> > rx_elf32_le_vec) tb="$tb elf32-rx.lo elf32.lo
> > $elf" ;;
> > + rx_elf32_linux_le_vec) tb="$tb elf32-rx.lo elf32.lo
> > $elf" ;;
> > s390_elf32_vec) tb="$tb elf32-s390.lo elf32.lo
> > $elf" ;;
> > s390_elf64_vec) tb="$tb elf64-s390.lo elf64.lo
> > $elf"; target_size=64 ;;
> > score_elf32_be_vec) tb="$tb elf32-score.lo
> > elf32-score7.lo elf32.lo $elf"; want64=true; target_size=64 ;;
> > diff --git a/bfd/elf32-rx.c b/bfd/elf32-rx.c
> > index 1f70b97a34..ddcf5e980f 100644
> > --- a/bfd/elf32-rx.c
> > +++ b/bfd/elf32-rx.c
> > @@ -3310,6 +3310,14 @@ rx_elf_object_p (bfd * abfd)
> >
> > return TRUE;
> > }
> > +
> > +static bfd_boolean
> > +rx_linux_object_p (bfd * abfd)
> > +{
> > + bfd_default_set_arch_mach (abfd, bfd_arch_rx,
> > + elf32_rx_machine (abfd));
> > + return TRUE;
> > +}
> >
> >
> > #ifdef DEBUG
> > @@ -4059,3 +4067,18 @@ rx_additional_link_map_text (bfd *obfd, struct
> > bfd_link_info *info, FILE *mapfil
> > #define elf32_bed elf32_rx_be_ns_bed
> >
> > #include "elf32-target.h"
> > +
> > +#undef TARGET_LITTLE_SYM
> > +#define TARGET_LITTLE_SYM rx_elf32_linux_le_vec
> > +#undef TARGET_LITTLE_NAME
> > +#define TARGET_LITTLE_NAME "elf32-rx-linux"
> > +#undef TARGET_BIG_SYM
> > +#undef TARGET_BIG_NAME
> > +
> > +#undef elf_backend_object_p
> > +#define elf_backend_object_p rx_linux_object_
> > p
> > +#undef elf_symbol_leading_char
> > +#undef elf32_bed
> > +#define elf32_bed elf32_rx_le
> > _linux_bed
> > +
> > +#include "elf32-target.h"
> > diff --git a/bfd/targets.c b/bfd/targets.c
> > index 531703d226..019b9002bf 100644
> > --- a/bfd/targets.c
> > +++ b/bfd/targets.c
> > @@ -775,6 +775,7 @@ extern const bfd_target rs6000_xcoff_vec;
> > extern const bfd_target rx_elf32_be_vec;
> > extern const bfd_target rx_elf32_be_ns_vec;
> > extern const bfd_target rx_elf32_le_vec;
> > +extern const bfd_target rx_elf32_linux_le_vec;
> > extern const bfd_target s390_elf32_vec;
> > extern const bfd_target s390_elf64_vec;
> > extern const bfd_target score_elf32_be_vec;
> > diff --git a/gas/ChangeLog b/gas/ChangeLog
> > index f2a0c6a408..5077609109 100644
> > --- a/gas/ChangeLog
> > +++ b/gas/ChangeLog
> > @@ -1,3 +1,8 @@
> > +2018-07-30 Yoshinori Sato <ysato@users.sourceforge.jp>
> > +
> > + * configure.tgt: Add rx-*-linux.
> > + * config/tc-rx.h (TARGET_FORMAT): Add "elf32-rx-linux".
> > +
> > 2018-07-29 John David Anglin <danglin@gcc.gnu.org>
> >
> > * config/tc-hppa.c: Include "struc-symbol.h".
> > diff --git a/gas/config/tc-rx.h b/gas/config/tc-rx.h
> > index bf1f283d3d..78b2bedc9f 100644
> > --- a/gas/config/tc-rx.h
> > +++ b/gas/config/tc-rx.h
> > @@ -31,7 +31,11 @@ extern int target_big_endian;
> > /* Instruction bytes are big endian, data bytes can be either. */
> > #define TARGET_BYTES_BIG_ENDIAN 0
> >
> > +#ifndef TE_LINUX
> > #define TARGET_FORMAT (target_big_endian ? "elf32-rx-be" : "elf32-
> > rx-le")
> > +#else
> > +#define TARGET_FORMAT "elf32-rx-linux"
> > +#endif
> >
> > /* We don't need to handle .word strangely. */
> > #define WORKING_DOT_WORD
> > diff --git a/gas/configure.tgt b/gas/configure.tgt
> > index 6df7dea31f..1122430104 100644
> > --- a/gas/configure.tgt
> > +++ b/gas/configure.tgt
> > @@ -361,6 +361,8 @@ case ${generic_target} in
> >
> > riscv*-*-*) fmt=elf endian=little
> > ;;
> >
> > + rx-*-linux*) fmt=elf em=linux ;;
> > +
> > s390-*-linux-*) fmt=elf em=linux ;;
> > s390-*-tpf*) fmt=elf ;;
> >
--
Yosinori Sato