[PATCH v3] MIPS: the default output fellows triple
Richard Sandiford
richard.sandiford@arm.com
Tue Apr 18 13:07:28 GMT 2023
YunQiang Su <yunqiang.su@cipunited.com> writes:
> PR 25494.
>
> 1. as fellows the isa level in triple of target
> > as xx.s
> 2. ld fellows the isa level in triple of target
> > ld -r -b binary xx.dat -o xx.o
>
> These rules include:
> 1. *-gnuabi64: will use N64 ABI by default
> 2. *-img-* (vendor): will use MIPS r6 by default
> 3. mipsisa32r6*/mipsisa64r6*: will use MIPS r6 by default
Sorry to be awkward, but could you split this into two patches:
one that handles gnuabi64 and one that does the r6 thing?
Thanks,
Richard
> ---
> bfd/config.bfd | 21 +++++++++++++++++--
> bfd/elfxx-mips.c | 10 +++++++--
> .../binutils-all/mips/mips-note-2-n32.d | 1 +
> gas/configure | 14 ++++++++++++-
> gas/configure.ac | 14 ++++++++++++-
> gold/configure.tgt | 14 +++++++++++++
> ld/configure.tgt | 12 +++++++++--
> 7 files changed, 78 insertions(+), 8 deletions(-)
>
> diff --git a/bfd/config.bfd b/bfd/config.bfd
> index 7af481048db..a57105097a8 100644
> --- a/bfd/config.bfd
> +++ b/bfd/config.bfd
> @@ -941,11 +941,21 @@ case "${targ}" in
> targ_defvec=mips_elf32_be_vec
> targ_selvecs="mips_elf32_le_vec mips_elf64_be_vec mips_elf64_le_vec mips_ecoff_be_vec mips_ecoff_le_vec"
> ;;
> - mips64*el-*-linux*)
> + mips*64*el-*-linux*-gnuabi64)
> + targ_defvec=mips_elf64_trad_le_vec
> + targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_be_vec"
> + want64=true
> + ;;
> + mips*64*-*-linux*-gnuabi64)
> + targ_defvec=mips_elf64_trad_be_vec
> + targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_le_vec"
> + want64=true
> + ;;
> + mips*64*el-*-linux*)
> targ_defvec=mips_elf32_ntrad_le_vec
> targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_le_vec mips_elf64_trad_be_vec"
> ;;
> - mips64*-*-linux*)
> + mips*64*-*-linux*)
> targ_defvec=mips_elf32_ntrad_be_vec
> targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_be_vec mips_elf64_trad_le_vec"
> ;;
> @@ -1525,3 +1535,10 @@ case "${targ_defvec} ${targ_selvecs}" in
> targ_archs="$targ_archs bfd_iamcu_arch"
> ;;
> esac
> +
> +case "${targ}" in
> + mipsisa32r6* | mipsisa64r6* | mips*-img-*)
> + targ_cflags="$targ_cflags -DMIPS_DEFAULT_R6=1"
> + ;;
> +esac
> +
> diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
> index 13a89953293..336c32b48ec 100644
> --- a/bfd/elfxx-mips.c
> +++ b/bfd/elfxx-mips.c
> @@ -12327,9 +12327,15 @@ mips_set_isa_flags (bfd *abfd)
> {
> default:
> if (ABI_N32_P (abfd) || ABI_64_P (abfd))
> - val = E_MIPS_ARCH_3;
> +#ifdef MIPS_DEFAULT_R6
> + val = E_MIPS_ARCH_64R6;
> else
> - val = E_MIPS_ARCH_1;
> + val = E_MIPS_ARCH_32R6;
> +#else
> + val = E_MIPS_ARCH_3;
> + else
> + val = E_MIPS_ARCH_1;
> +#endif
> break;
>
> case bfd_mach_mips3000:
> diff --git a/binutils/testsuite/binutils-all/mips/mips-note-2-n32.d b/binutils/testsuite/binutils-all/mips/mips-note-2-n32.d
> index c2a581858ed..5e24e7a115e 100644
> --- a/binutils/testsuite/binutils-all/mips/mips-note-2-n32.d
> +++ b/binutils/testsuite/binutils-all/mips/mips-note-2-n32.d
> @@ -1,4 +1,5 @@
> #PROG: objcopy
> +#as: -n32
> #readelf: --notes --wide
> #objcopy: --merge-notes
> #name: MIPS merge notes section (n32)
> diff --git a/gas/configure b/gas/configure
> index b56836998ef..0daa80d5b4c 100755
> --- a/gas/configure
> +++ b/gas/configure
> @@ -12211,6 +12211,15 @@ _ACEOF
> use_e_mips_abi_o32=1
> ;;
> esac
> + # If Vendor is IMG, then MIPSr6 is used
> + case ${target} in
> + mips*64*-img-*)
> + mips_cpu=mips64r6
> + ;;
> + mips*-img-*)
> + mips_cpu=mips32r6
> + ;;
> + esac
> # Decide whether to generate 32-bit or 64-bit code by default.
> # Used to resolve -march=from-abi when an embedded ABI is selected.
> case ${target} in
> @@ -12223,7 +12232,10 @@ _ACEOF
> esac
> # Decide which ABI to target by default.
> case ${target} in
> - mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
> + mips*64*-linux-gnuabi64)
> + mips_default_abi=N64_ABI
> + ;;
> + mips*64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
> | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
> mips_default_abi=N32_ABI
> ;;
> diff --git a/gas/configure.ac b/gas/configure.ac
> index 6a68fd7c4e6..2b91f9ec616 100644
> --- a/gas/configure.ac
> +++ b/gas/configure.ac
> @@ -380,6 +380,15 @@ changequote([,])dnl
> use_e_mips_abi_o32=1
> ;;
> esac
> + # If Vendor is IMG, then MIPSr6 is used
> + case ${target} in
> + mips*64*-img-*)
> + mips_cpu=mips64r6
> + ;;
> + mips*-img-*)
> + mips_cpu=mips32r6
> + ;;
> + esac
> # Decide whether to generate 32-bit or 64-bit code by default.
> # Used to resolve -march=from-abi when an embedded ABI is selected.
> case ${target} in
> @@ -392,7 +401,10 @@ changequote([,])dnl
> esac
> # Decide which ABI to target by default.
> case ${target} in
> - mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
> + mips*64*-linux-gnuabi64)
> + mips_default_abi=N64_ABI
> + ;;
> + mips*64*-linux* | mips-sgi-irix6* | mips64*-freebsd* \
> | mips64*-kfreebsd*-gnu | mips64*-ps2-elf*)
> mips_default_abi=N32_ABI
> ;;
> diff --git a/gold/configure.tgt b/gold/configure.tgt
> index 4b54e08d27f..ef47ce079f1 100644
> --- a/gold/configure.tgt
> +++ b/gold/configure.tgt
> @@ -153,6 +153,13 @@ aarch64*-*)
> targ_big_endian=false
> targ_extra_big_endian=true
> ;;
> +mips*64*el*-*-*|mips*64*le*-*-*)
> + targ_obj=mips
> + targ_machine=EM_MIPS_RS3_LE
> + targ_size=64
> + targ_big_endian=false
> + targ_extra_big_endian=true
> + ;;
> mips*el*-*-*|mips*le*-*-*)
> targ_obj=mips
> targ_machine=EM_MIPS_RS3_LE
> @@ -160,6 +167,13 @@ mips*el*-*-*|mips*le*-*-*)
> targ_big_endian=false
> targ_extra_big_endian=true
> ;;
> +mips*64*-*-*)
> + targ_obj=mips
> + targ_machine=EM_MIPS
> + targ_size=64
> + targ_big_endian=true
> + targ_extra_big_endian=false
> + ;;
> mips*-*-*)
> targ_obj=mips
> targ_machine=EM_MIPS
> diff --git a/ld/configure.tgt b/ld/configure.tgt
> index 34c9d67c365..4a71f679e29 100644
> --- a/ld/configure.tgt
> +++ b/ld/configure.tgt
> @@ -580,11 +580,19 @@ mips*-*-vxworks*) targ_emul=elf32ebmipvxworks
> ;;
> mips*-*-windiss) targ_emul=elf32mipswindiss
> ;;
> -mips64*el-*-linux-*) targ_emul=elf32ltsmipn32
> +mips*64*el-*-linux-gnuabi64) targ_emul=elf64ltsmip
> + targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32ltsmip elf32btsmip elf64btsmip"
> + targ_extra_libpath=$targ_extra_emuls
> + ;;
> +mips*64*el-*-linux-*) targ_emul=elf32ltsmipn32
> targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
> targ_extra_libpath=$targ_extra_emuls
> ;;
> -mips64*-*-linux-*) targ_emul=elf32btsmipn32
> +mips*64*-*-linux-gnuabi64) targ_emul=elf64btsmip
> + targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32btsmip elf32ltsmip elf64ltsmip"
> + targ_extra_libpath=$targ_extra_emuls
> + ;;
> +mips*64*-*-linux-*) targ_emul=elf32btsmipn32
> targ_extra_emuls="elf32ltsmipn32 elf32btsmip elf32ltsmip elf64btsmip elf64ltsmip"
> targ_extra_libpath=$targ_extra_emuls
> ;;
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