[OpenRISC] [PATCH v3 11/13] or1k: Build Infrastructure

Adhemerval Zanella
2021-12-22T21:03:27Z

On 10/12/2021 20:34, Stafford Horne via Libc-alpha wrote:
> Here we define the minumum linux kernel version at 5.4.0, as that is the
> long term support version where 32-bit architectures start to support
> 64-bit time API's. The OpenRISC kernel had some bugs up until version 5.8
> which caused issues with glibc fork/clone, they have been backported to
> 5.4 but not previous versions.

Some comments below, the rest looks ok.

> ---
> sysdeps/or1k/Implies | 3 ++
> sysdeps/or1k/Makefile | 7 +++++
> sysdeps/or1k/nofpu/Implies | 1 +
> sysdeps/or1k/nptl/Makefile | 21 +++++++++++++
> sysdeps/or1k/preconfigure | 34 +++++++++++++++++++++
> sysdeps/unix/sysv/linux/or1k/Implies | 3 ++
> sysdeps/unix/sysv/linux/or1k/Makefile | 12 ++++++++
> sysdeps/unix/sysv/linux/or1k/configure | 4 +++
> sysdeps/unix/sysv/linux/or1k/configure.ac | 4 +++
> sysdeps/unix/sysv/linux/or1k/shlib-versions | 2 ++
> 10 files changed, 91 insertions(+)
> create mode 100644 sysdeps/or1k/Implies
> create mode 100644 sysdeps/or1k/Makefile
> create mode 100644 sysdeps/or1k/nofpu/Implies
> create mode 100644 sysdeps/or1k/nptl/Makefile
> create mode 100644 sysdeps/or1k/preconfigure
> create mode 100644 sysdeps/unix/sysv/linux/or1k/Implies
> create mode 100644 sysdeps/unix/sysv/linux/or1k/Makefile
> create mode 100644 sysdeps/unix/sysv/linux/or1k/configure
> create mode 100644 sysdeps/unix/sysv/linux/or1k/configure.ac
> create mode 100644 sysdeps/unix/sysv/linux/or1k/shlib-versions
>
> diff --git a/sysdeps/or1k/Implies b/sysdeps/or1k/Implies
> new file mode 100644
> index 0000000000..387a0ca052
> --- /dev/null
> +++ b/sysdeps/or1k/Implies
> @@ -0,0 +1,3 @@
> +wordsize-32
> +ieee754/dbl-64
> +ieee754/flt-32
> diff --git a/sysdeps/or1k/Makefile b/sysdeps/or1k/Makefile
> new file mode 100644
> index 0000000000..0241a0587e
> --- /dev/null
> +++ b/sysdeps/or1k/Makefile
> @@ -0,0 +1,7 @@
> +ASFLAGS-.os += -fPIC
> +
> +ifeq ($(subdir),elf)
> +# Extra shared linker files to link only into dl-allobjs.so.
> +sysdep-rtld-routines += dl-start
> +endif
> +
> diff --git a/sysdeps/or1k/nofpu/Implies b/sysdeps/or1k/nofpu/Implies
> new file mode 100644
> index 0000000000..abcbadb25f
> --- /dev/null
> +++ b/sysdeps/or1k/nofpu/Implies
> @@ -0,0 +1 @@
> +ieee754/soft-fp
> diff --git a/sysdeps/or1k/nptl/Makefile b/sysdeps/or1k/nptl/Makefile
> new file mode 100644
> index 0000000000..0e08821933
> --- /dev/null
> +++ b/sysdeps/or1k/nptl/Makefile
> @@ -0,0 +1,21 @@
> +# Copyright (C) 2021 Free Software Foundation, Inc.
> +#
> +# This file is part of the GNU C Library.
> +#
> +# The GNU C Library is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU Lesser General Public
> +# License as published by the Free Software Foundation; either
> +# version 2.1 of the License, or (at your option) any later version.
> +#
> +# The GNU C Library is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> +# Lesser General Public License for more details.
> +#
> +# You should have received a copy of the GNU Lesser General Public
> +# License along with the GNU C Library. If not, see
> +# <https://www.gnu.org/licenses/>.
> +
> +ifeq ($(subdir),csu)
> +gen-as-const-headers += tcb-offsets.sym
> +endif

I think you do not need this anymore since 691d9ae9e6f3bcb.

> diff --git a/sysdeps/or1k/preconfigure b/sysdeps/or1k/preconfigure
> new file mode 100644
> index 0000000000..d1b1fb1843
> --- /dev/null
> +++ b/sysdeps/or1k/preconfigure
> @@ -0,0 +1,34 @@
> +#
> +# This is free and unencumbered software released into the public domain.
> +#
> +# Anyone is free to copy, modify, publish, use, compile, sell, or
> +# distribute this software, either in source code form or as a compiled
> +# binary, for any purpose, commercial or non-commercial, and by any
> +# means.
> +#
> +# In jurisdictions that recognize copyright laws, the author or authors
> +# of this software dedicate any and all copyright interest in the
> +# software to the public domain. We make this dedication for the benefit
> +# of the public at large and to the detriment of our heirs and
> +# successors. We intend this dedication to be an overt act of
> +# relinquishment in perpetuity of all present and future rights to this
> +# software under copyright law.
> +#
> +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> +# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
> +# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> +# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> +# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> +# OTHER DEALINGS IN THE SOFTWARE.
> +#
> +
> +case "$machine" in
> +or1k*)
> + base_machine=or1k
> + machine=or1k
> +
> + with_fp_cond="defined __or1k_hard_float__"
> + ;;
> +esac
> +
> diff --git a/sysdeps/unix/sysv/linux/or1k/Implies b/sysdeps/unix/sysv/linux/or1k/Implies
> new file mode 100644
> index 0000000000..f39f16c04a
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/or1k/Implies
> @@ -0,0 +1,3 @@
> +or1k/nptl
> +unix/sysv/linux/generic/wordsize-32
> +unix/sysv/linux/generic
> diff --git a/sysdeps/unix/sysv/linux/or1k/Makefile b/sysdeps/unix/sysv/linux/or1k/Makefile
> new file mode 100644
> index 0000000000..be20320b2f
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/or1k/Makefile
> @@ -0,0 +1,12 @@
> +ifeq ($(subdir),misc)
> + sysdep_routines += prctl or1k_clone

The indentations seems off here and I think there is no need of prctl.

> +endif
> +
> +ifeq ($(subdir),stdlib)
> +gen-as-const-headers += ucontext_i.sym
> +endif
> +
> +# pull in __syscall_error routine
> +libpthread-routines += sysdep
> +librt-routines += sysdep
> +
> diff --git a/sysdeps/unix/sysv/linux/or1k/configure b/sysdeps/unix/sysv/linux/or1k/configure
> new file mode 100644
> index 0000000000..5225dfea5b
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/or1k/configure
> @@ -0,0 +1,4 @@
> +# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
> + # Local configure fragment for sysdeps/unix/sysv/linux/or1k.
> +
> +arch_minimum_kernel=5.4.0
> diff --git a/sysdeps/unix/sysv/linux/or1k/configure.ac b/sysdeps/unix/sysv/linux/or1k/configure.ac
> new file mode 100644
> index 0000000000..6274c4fb02
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/or1k/configure.ac
> @@ -0,0 +1,4 @@
> +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
> +# Local configure fragment for sysdeps/unix/sysv/linux/or1k.
> +
> +arch_minimum_kernel=5.4.0
> diff --git a/sysdeps/unix/sysv/linux/or1k/shlib-versions b/sysdeps/unix/sysv/linux/or1k/shlib-versions
> new file mode 100644
> index 0000000000..159653b5c4
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/or1k/shlib-versions
> @@ -0,0 +1,2 @@
> +DEFAULT GLIBC_2.35
> +ld=ld-linux-or1k.so.1