Hi all:
This patch is version 2 of FreeBSD supporting for RISC-V, Ruslan
(RISC-V FreeBSD maintainer) and me has been tested on FreeBSD 12
for building kernel and whole user space programs/libraries again :)
Hi Jim:
Ruslan and me just decide upstream GCC part only this time since
binutils need more work (mostly for ELF header info), but it's not
affect the correctness.
Changes since v1[1]:
- Remove dbxelf.h.
- Correct the copyright year info.
- Fix libgcc/config.host for riscv*-*-freebsd*.
Copyright part, Ruslan has sent to fsf-reco...@gnu.org but no echo,
I've forward that to ass...@gnu.org again.
gcc/ChangeLog
2018-01-29 Ruslan Bukin <b...@bsdpad.com>
Kito Cheng <kito.ch...@gmail.com>
* config.gcc (riscv*-*-freebsd*): New.
* config/riscv/freebsd.h: New.
libgcc/ChangeLog
2018-01-29 Ruslan Bukin <b...@bsdpad.com>
* libgcc/config.host: Support RISC-V FreeBSD.
[1] V1 patch: https://gcc.gnu.org/ml/gcc-patches/2018-01/msg02235.html
From 13781768c4f71eb83505f0d579de37d5f861ac7c Mon Sep 17 00:00:00 2001
From: Ruslan Bukin <b...@bsdpad.com>
Date: Wed, 3 Jan 2018 15:59:04 +0000
Subject: [PATCH] RISC-V: Add support for FreeBSD
gcc/ChangeLog
2018-02-18 Ruslan Bukin <b...@bsdpad.com>
Kito Cheng <kito.ch...@gmail.com>
* config.gcc (riscv*-*-freebsd*): New.
* config/riscv/freebsd.h: New.
libgcc/ChangeLog
2018-02-18 Ruslan Bukin <b...@bsdpad.com>
* libgcc/config.host: Support RISC-V FreeBSD.
---
gcc/config.gcc | 9 ++++++++
gcc/config/riscv/freebsd.h | 54 ++++++++++++++++++++++++++++++++++++++++++++++
libgcc/config.host | 4 ++++
3 files changed, 67 insertions(+)
create mode 100644 gcc/config/riscv/freebsd.h
diff --git a/gcc/config.gcc b/gcc/config.gcc
index c52fecf..01b5a92 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2086,6 +2086,15 @@ riscv*-*-elf* | riscv*-*-rtems*)
;;
esac
;;
+riscv*-*-freebsd*)
+ tm_file="${tm_file} elfos.h ${fbsd_tm_file} riscv/freebsd.h"
+ tmake_file="${tmake_file} riscv/t-riscv"
+ gnu_ld=yes
+ gas=yes
+ # Force .init_array support. The configure script cannot always
+ # automatically detect that GAS supports it, yet we require it.
+ gcc_cv_initfini_array=yes
+ ;;
mips*-*-netbsd*) # NetBSD/mips, either endian.
target_cpu_default="MASK_ABICALLS"
tm_file="elfos.h ${tm_file} mips/elf.h ${nbsd_tm_file} mips/netbsd.h"
diff --git a/gcc/config/riscv/freebsd.h b/gcc/config/riscv/freebsd.h
new file mode 100644
index 0000000..019b22f
--- /dev/null
+++ b/gcc/config/riscv/freebsd.h
@@ -0,0 +1,54 @@
+/* Definitions for RISC-V FreeBSD systems with ELF format.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS \
+ { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
+
+/* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support
+ for the special GCC options -static and -shared, which allow us to
+ link things in one of these three modes by applying the appropriate
+ combinations of options at link-time.
+
+ When the -shared link option is used a final link is not being
+ done. */
+
+#undef LINK_SPEC
+#define LINK_SPEC " \
+ -melf" XLEN_SPEC "lriscv \
+ %{p:%nconsider using `-pg' instead of `-p' with gprof (1) } \
+ %{v:-V} \
+ %{assert*} %{R*} %{rpath*} %{defsym*} \
+ %{shared:-Bshareable %{h*} %{soname*}} \
+ %{symbolic:-Bsymbolic} \
+ %{static:-Bstatic} \
+ %{!shared: \
+ %{!static: \
+ %{rdynamic:-export-dynamic} \
+ -dynamic-linker " FBSD_DYNAMIC_LINKER "} \
+ %{static:-static}}"
diff --git a/libgcc/config.host b/libgcc/config.host
index 96d55a4..11b4aca 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -1128,6 +1128,10 @@ riscv*-*-linux*)
extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o crtendS.o crtbeginT.o"
md_unwind_header=riscv/linux-unwind.h
;;
+riscv*-*-freebsd*)
+ tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address}"
+ extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o crtendS.o crtbeginT.o"
+ ;;
riscv*-*-*)
tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp riscv/t-elf riscv/t-elf${host_address}"
extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o"
--
2.7.4
