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Re: [PATCH, RX] Add target rx-*-linux
- From: Oleg Endo <oleg dot endo at t-online dot de>
- To: Yoshinori Sato <ysato at users dot sourceforge dot jp>, binutils at sourceware dot org
- Date: Mon, 30 Jul 2018 22:02:54 +0900
- Subject: Re: [PATCH, RX] Add target rx-*-linux
- References: <87d0v5rtfl.wl-ysato@users.sourceforge.jp>
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?
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 ;;
>