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Start support for the RISC-V 64-bit architecture developed by UC Berkeley.

Browse Source 
RISC-V is a new ISA designed to support computer research and education, and
is now become a standard open architecture for industry implementations.

This is a minimal set of changes required to run 'make kernel-toolchain'
using external (GNU) toolchain.

The FreeBSD/RISC-V project home: https://wiki.freebsd.org/riscv.

Reviewed by:	andrew, bdrewery, emaste, imp
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D4445
This commit is contained in:
Ruslan Bukin 2015-12-11 22:55:23 +00:00
parent 03b1fa9de4
commit 1fdcc5e5c0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=292124
17 changed files with 560 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Makefile
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@ -180,7 +180,7 @@ _MAKE= PATH=${PATH} ${SUB_MAKE} -f Makefile.inc1 TARGET=${_TARGET} TARGET_ARCH=$
_TARGET_ARCH= ${TARGET:S/pc98/i386/:S/arm64/aarch64/}
.elif !defined(TARGET) && defined(TARGET_ARCH) && \
${TARGET_ARCH} != ${MACHINE_ARCH}
_TARGET= ${TARGET_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/aarch64/arm64/:C/powerpc64/powerpc/}
_TARGET= ${TARGET_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/aarch64/arm64/:C/powerpc64/powerpc/:C/riscv64/riscv/}
.endif
.if defined(TARGET) && !defined(_TARGET)
_TARGET=${TARGET}

6
Makefile.inc1
View File

@ -172,7 +172,11 @@ VERSION= FreeBSD ${REVISION}-${BRANCH:C/-p[0-9]+$//} ${TARGET_ARCH} ${SRCRELDATE
.export VERSION
.endif
KNOWN_ARCHES?= aarch64/arm64 amd64 arm armeb/arm armv6/arm armv6hf/arm i386 i386/pc98 mips mipsel/mips mips64el/mips mips64/mips mipsn32el/mips mipsn32/mips powerpc powerpc64/powerpc sparc64
KNOWN_ARCHES?= aarch64/arm64 amd64 arm armeb/arm armv6/arm armv6hf/arm \
i386 i386/pc98 mips mipsel/mips mips64el/mips mips64/mips \
mipsn32el/mips mipsn32/mips powerpc powerpc64/powerpc \
riscv64/riscv sparc64
.if ${TARGET} == ${TARGET_ARCH}
_t= ${TARGET}
.else

51
etc/etc.riscv/ttys Normal file
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@ -0,0 +1,51 @@
#
# $FreeBSD$
# @(#)ttys 5.1 (Berkeley) 4/17/89
#
# This file specifies various information about terminals on the system.
# It is used by several different programs. Common entries for the
# various columns include:
#
# name The name of the terminal device.
#
# getty The program to start running on the terminal. Typically a
# getty program, as the name implies. Other common entries
# include none, when no getty is needed, and xdm, to start the
# X Window System.
#
# type The initial terminal type for this port. For hardwired
# terminal lines, this will contain the type of terminal used.
# For virtual consoles, the correct type is typically xterm.
# Other common values include dialup for incoming modem ports, and
# unknown when the terminal type cannot be predetermined.
#
# status Must be on or off. If on, init will run the getty program on
# the specified port. If the word "secure" appears, this tty
# allows root login.
#
# name getty type status comments
#
# If console is marked "insecure", then init will ask for the root password
# when going to single-user mode.
console none unknown off secure
#
ttyv0 "/usr/libexec/getty Pc" xterm onifconsole secure
# Virtual terminals
ttyv1 "/usr/libexec/getty Pc" xterm off secure
ttyv2 "/usr/libexec/getty Pc" xterm off secure
ttyv3 "/usr/libexec/getty Pc" xterm off secure
ttyv4 "/usr/libexec/getty Pc" xterm off secure
ttyv5 "/usr/libexec/getty Pc" xterm off secure
ttyv6 "/usr/libexec/getty Pc" xterm off secure
ttyv7 "/usr/libexec/getty Pc" xterm off secure
#ttyv8 "/usr/local/bin/xdm -nodaemon" xterm off secure
# Serial terminals
# The 'dialup' keyword identifies dialin lines to login, fingerd etc.
ttyu0 "/usr/libexec/getty 3wire" vt100 onifconsole secure
ttyu1 "/usr/libexec/getty 3wire" vt100 onifconsole secure
ttyu2 "/usr/libexec/getty 3wire" vt100 onifconsole secure
ttyu3 "/usr/libexec/getty 3wire" vt100 onifconsole secure
# Dumb console
dcons "/usr/libexec/getty std.9600" vt100 off secure
# RISC-V HTIF console
rcons "/usr/libexec/getty std.9600" vt100 onifconsole secure

46
lib/csu/riscv/Makefile Normal file
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@ -0,0 +1,46 @@
# $FreeBSD$
.PATH: ${.CURDIR}/../common
SRCS= crt1.c crti.S crtn.S
OBJS= ${SRCS:N*.h:R:S/$/.o/g}
OBJS+= Scrt1.o gcrt1.o
CFLAGS+= -I${.CURDIR}/../common \
-I${.CURDIR}/../../libc/include
FILES= ${OBJS}
FILESMODE= ${LIBMODE}
FILESOWN= ${LIBOWN}
FILESGRP= ${LIBGRP}
FILESDIR= ${LIBDIR}
# These FILES qualify as libraries for the purpose of LIBRARIES_ONLY.
.undef LIBRARIES_ONLY
CLEANFILES= ${OBJS}
CLEANFILES+= crt1.s gcrt1.s Scrt1.s
# See the comment in lib/csu/common/crtbrand.c for the reason crt1.c is not
# directly compiled to .o files.
crt1.s: crt1.c
${CC} ${CFLAGS} -S -o ${.TARGET} ${.CURDIR}/crt1.c
sed ${SED_FIX_NOTE} ${.TARGET}
crt1.o: crt1.s
${CC} ${ACFLAGS} -c -o ${.TARGET} crt1.s
gcrt1.s: crt1.c
${CC} ${CFLAGS} -DGCRT -S -o ${.TARGET} ${.CURDIR}/crt1.c
sed ${SED_FIX_NOTE} ${.TARGET}
gcrt1.o: gcrt1.s
${CC} ${ACFLAGS} -c -o ${.TARGET} gcrt1.s
Scrt1.s: crt1.c
${CC} ${CFLAGS} -fPIC -DPIC -S -o ${.TARGET} ${.CURDIR}/crt1.c
sed ${SED_FIX_NOTE} ${.TARGET}
Scrt1.o: Scrt1.s
${CC} ${ACFLAGS} -c -o ${.TARGET} Scrt1.s
.include <bsd.lib.mk>

89
lib/csu/riscv/crt1.c Normal file
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@ -0,0 +1,89 @@
/* LINTLIBRARY */
/*-
* Copyright 1996-1998 John D. Polstra.
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Portions of this software were developed by SRI International and the
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Portions of this software were developed by the University of Cambridge
* Computer Laboratory as part of the CTSRD Project, with support from the
* UK Higher Education Innovation Fund (HEIF).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
#include "libc_private.h"
#include "crtbrand.c"
#include "ignore_init.c"
typedef void (*fptr)(void);
#ifdef GCRT
extern void _mcleanup(void);
extern void monstartup(void *, void *);
extern int eprol;
extern int etext;
#endif
void __start(int argc, char **argv, char **env, void (*cleanup)(void));
/* The entry function. */
__asm(" .text \n"
" .align 0 \n"
" .globl _start \n"
" _start: \n"
" mv a3, a2 \n" /* cleanup */
" addi a1, a0, 8 \n" /* get argv */
" ld a0, 0(a0) \n" /* load argc */
" slli t0, a0, 3 \n" /* mult by arg size */
" add a2, a1, t0 \n" /* env is after argv */
" addi a2, a2, 8 \n" /* argv is null terminated */
" lla gp, _gp \n" /* load global pointer */
" call __start");
void
__start(int argc, char **argv, char **env, void (*cleanup)(void))
{
handle_argv(argc, argv, env);
if (&_DYNAMIC != NULL)
atexit(cleanup);
else
_init_tls();
#ifdef GCRT
atexit(_mcleanup);
monstartup(&eprol, &etext);
__asm__("eprol:");
#endif
handle_static_init(argc, argv, env);
exit(main(argc, argv, env));
}

58
lib/csu/riscv/crti.S Normal file
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@ -0,0 +1,58 @@
/*-
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Portions of this software were developed by SRI International and the
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Portions of this software were developed by the University of Cambridge
* Computer Laboratory as part of the CTSRD Project, with support from the
* UK Higher Education Innovation Fund (HEIF).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
# this puts _gp into .dynsym, so symlook_obj can now find that (see reloc.c)
.weak _gp
_gp:
.section .init,"ax",@progbits
.align 2
.globl _init
.type _init,@function
_init:
addi sp, sp, -16
sd ra, 0(sp)
.section .fini,"ax",@progbits
.align 2
.globl _fini
.type _fini,@function
_fini:
addi sp, sp, -16
sd ra, 0(sp)
.section .note.GNU-stack,"",%progbits

48
lib/csu/riscv/crtn.S Normal file
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@ -0,0 +1,48 @@
/*-
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Portions of this software were developed by SRI International and the
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Portions of this software were developed by the University of Cambridge
* Computer Laboratory as part of the CTSRD Project, with support from the
* UK Higher Education Innovation Fund (HEIF).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
.section .init,"ax",@progbits
ld ra, 0(sp)
addi sp, sp, 16
ret
.section .fini,"ax",@progbits
ld ra, 0(sp)
addi sp, sp, 16
ret
.section .note.GNU-stack,"",%progbits

1
lib/libc/riscv/Makefile.inc Normal file
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@ -0,0 +1 @@
# $FreeBSD$

1
lib/libthr/arch/riscv/Makefile.inc Normal file
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@ -0,0 +1 @@
# $FreeBSD$

6
lib/msun/riscv/Makefile.inc Normal file
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@ -0,0 +1,6 @@
# $FreeBSD$
# RISCVTODO: should be 113
# compilation problems: gcc generates bltuz instruction, which is not exists
LDBL_PREC = 53

228
lib/msun/riscv/fenv.h Normal file
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@ -0,0 +1,228 @@
/*-
* Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Portions of this software were developed by SRI International and the
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Portions of this software were developed by the University of Cambridge
* Computer Laboratory as part of the CTSRD Project, with support from the
* UK Higher Education Innovation Fund (HEIF).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _FENV_H_
#define _FENV_H_
#include <sys/_types.h>
#ifndef __fenv_static
#define __fenv_static static
#endif
typedef __uint64_t fenv_t;
typedef __uint64_t fexcept_t;
/* Exception flags */
#define FE_INVALID 0x0010
#define FE_DIVBYZERO 0x0008
#define FE_OVERFLOW 0x0004
#define FE_UNDERFLOW 0x0002
#define FE_INEXACT 0x0001
#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
/*
* RISC-V Rounding modes
*/
#define FE_TONEAREST (0x00 << 5)
#define FE_TOWARDZERO (0x01 << 5)
#define FE_DOWNWARD (0x02 << 5)
#define FE_UPWARD (0x03 << 5)
#define _ROUND_SHIFT 5
#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
FE_UPWARD | FE_TOWARDZERO)
__BEGIN_DECLS
/* Default floating-point environment */
extern const fenv_t __fe_dfl_env;
#define FE_DFL_ENV (&__fe_dfl_env)
/* We need to be able to map status flag positions to mask flag positions */
#define _FPUSW_SHIFT 0
#define _ENABLE_MASK (FE_ALL_EXCEPT << _FPUSW_SHIFT)
#define __rfs(__fpsr) __asm __volatile("csrr %0, fcsr" : "=r" (*(__fpsr)))
#define __wfs(__fpsr) __asm __volatile("csrw fcsr, %0" :: "r" (__fpsr))
__fenv_static inline int
feclearexcept(int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
__fpsr &= ~__excepts;
__wfs(__fpsr);
return (0);
}
__fenv_static inline int
fegetexceptflag(fexcept_t *__flagp, int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
*__flagp = __fpsr & __excepts;
return (0);
}
__fenv_static inline int
fesetexceptflag(const fexcept_t *__flagp, int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
__fpsr &= ~__excepts;
__fpsr |= *__flagp & __excepts;
__wfs(__fpsr);
return (0);
}
__fenv_static inline int
feraiseexcept(int __excepts)
{
fexcept_t __ex = __excepts;
fesetexceptflag(&__ex, __excepts); /* XXX */
return (0);
}
__fenv_static inline int
fetestexcept(int __excepts)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
return (__fpsr & __excepts);
}
__fenv_static inline int
fegetround(void)
{
return (-1);
}
__fenv_static inline int
fesetround(int __round)
{
return (-1);
}
__fenv_static inline int
fegetenv(fenv_t *__envp)
{
__rfs(__envp);
return (0);
}
__fenv_static inline int
feholdexcept(fenv_t *__envp)
{
fenv_t __env;
__rfs(&__env);
*__envp = __env;
__env &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
__wfs(__env);
return (0);
}
__fenv_static inline int
fesetenv(const fenv_t *__envp)
{
__wfs(*__envp);
return (0);
}
__fenv_static inline int
feupdateenv(const fenv_t *__envp)
{
fexcept_t __fpsr;
__rfs(&__fpsr);
__wfs(*__envp);
feraiseexcept(__fpsr & FE_ALL_EXCEPT);
return (0);
}
#if __BSD_VISIBLE
/* We currently provide no external definitions of the functions below. */
static inline int
feenableexcept(int __mask)
{
fenv_t __old_fpsr;
fenv_t __new_fpsr;
__rfs(&__old_fpsr);
__new_fpsr = __old_fpsr | (__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT;
__wfs(__new_fpsr);
return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
}
static inline int
fedisableexcept(int __mask)
{
fenv_t __old_fpsr;
fenv_t __new_fpsr;
__rfs(&__old_fpsr);
__new_fpsr = __old_fpsr & ~((__mask & FE_ALL_EXCEPT) << _FPUSW_SHIFT);
__wfs(__new_fpsr);
return ((__old_fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
}
static inline int
fegetexcept(void)
{
fenv_t __fpsr;
__rfs(&__fpsr);
return ((__fpsr & _ENABLE_MASK) >> _FPUSW_SHIFT);
}
#endif /* __BSD_VISIBLE */
__END_DECLS
#endif /* !_FENV_H_ */

11
share/mk/bsd.cpu.mk
View File

@ -18,6 +18,8 @@ MACHINE_CPU = i486
MACHINE_CPU = mips
. elif ${MACHINE_CPUARCH} == "powerpc"
MACHINE_CPU = aim
. elif ${MACHINE_CPUARCH} == "riscv"
MACHINE_CPU = riscv
. elif ${MACHINE_CPUARCH} == "sparc64"
MACHINE_CPU = ultrasparc
. endif
@ -148,6 +150,8 @@ _CPUCFLAGS = -march=${CPUTYPE}
# sb1, xlp, xlr
_CPUCFLAGS = -march=${CPUTYPE:S/^mips//}
. endif
. elif ${MACHINE_CPUARCH} == "riscv"
_CPUCFLAGS = -msoft-float # -march="RV64I" # RISCVTODO
. elif ${MACHINE_ARCH} == "sparc64"
. if ${CPUTYPE} == "v9"
_CPUCFLAGS = -mcpu=v9
@ -277,6 +281,9 @@ MACHINE_CPU = mips
. if ${CPUTYPE} == "e500"
MACHINE_CPU = booke softfp
. endif
########## riscv
. elif ${MACHINE_CPUARCH} == "riscv"
MACHINE_CPU = riscv
########## sparc64
. elif ${MACHINE_ARCH} == "sparc64"
. if ${CPUTYPE} == "v9"
@ -313,6 +320,10 @@ CFLAGS += -mfloat-abi=softfp
.endif
.endif
.if ${MACHINE_CPUARCH} == "riscv"
CFLAGS += -msoft-float
.endif
# NB: COPTFLAGS is handled in /usr/src/sys/conf/kern.pre.mk
.if !defined(NO_CPU_CFLAGS)

1
share/mk/bsd.endian.mk
View File

@ -4,6 +4,7 @@
${MACHINE_ARCH} == "amd64" || \
${MACHINE_ARCH} == "i386" || \
(${MACHINE} == "arm" && ${MACHINE_ARCH:Marm*eb*} == "") || \
${MACHINE_CPUARCH} == "riscv" || \
${MACHINE_ARCH:Mmips*el} != ""
TARGET_ENDIANNESS= 1234
.elif ${MACHINE_ARCH} == "powerpc" || \

5
share/mk/bsd.sys.mk
View File

@ -109,6 +109,11 @@ CWARNFLAGS+= -Werror
CWARNFLAGS+= -Wno-format
.endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE}
# GCC 5.2.0
.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 50200
CWARNFLAGS+= -Wno-error=unused-function -Wno-error=enum-compare -Wno-error=logical-not-parentheses -Wno-error=bool-compare -Wno-error=uninitialized -Wno-error=array-bounds -Wno-error=clobbered -Wno-error=cast-align -Wno-error=extra -Wno-error=attributes -Wno-error=inline -Wno-error=unused-but-set-variable -Wno-error=unused-value -Wno-error=strict-aliasing -Wno-error=address
.endif
# How to handle FreeBSD custom printf format specifiers.
.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
FORMAT_EXTENSIONS= -D__printf__=__freebsd_kprintf__

3
share/mk/local.meta.sys.mk
View File

@ -48,13 +48,14 @@ TARGET_ARCHES_arm64?= aarch64
TARGET_ARCHES_mips?= mipsel mips mips64el mips64 mipsn32 mipsn32el
TARGET_ARCHES_powerpc?= powerpc powerpc64
TARGET_ARCHES_pc98?= i386
TARGET_ARCHES_riscv?= riscv64
# some corner cases
BOOT_MACHINE_DIR.amd64 = boot/i386
MACHINE_ARCH.host = ${_HOST_ARCH}
# the list of machines we support
ALL_MACHINE_LIST?= amd64 arm arm64 i386 mips pc98 powerpc sparc64
ALL_MACHINE_LIST?= amd64 arm arm64 i386 mips pc98 powerpc riscv sparc64
.for m in ${ALL_MACHINE_LIST:O:u}
MACHINE_ARCH_LIST.$m?= ${TARGET_ARCHES_${m}:U$m}
MACHINE_ARCH.$m?= ${MACHINE_ARCH_LIST.$m:[1]}

7
share/mk/src.opts.mk
View File

@ -229,12 +229,17 @@ __DEFAULT_YES_OPTIONS+=GCC GCC_BOOTSTRAP GNUCXX
__DEFAULT_NO_OPTIONS+=CLANG CLANG_BOOTSTRAP CLANG_FULL CLANG_IS_CC
.endif
# In-tree binutils/gcc are older versions without modern architecture support.
.if ${__T} == "aarch64"
.if ${__T} == "aarch64" || ${__T} == "riscv64"
BROKEN_OPTIONS+=BINUTILS BINUTILS_BOOTSTRAP GCC GCC_BOOTSTRAP GDB
__DEFAULT_YES_OPTIONS+=ELFCOPY_AS_OBJCOPY
.else
__DEFAULT_NO_OPTIONS+=ELFCOPY_AS_OBJCOPY
.endif
.if ${__T} == "riscv64"
BROKEN_OPTIONS+=PROFILE # "sorry, unimplemented: profiler support for RISC-V"
BROKEN_OPTIONS+=TESTS # "undefined reference to `_Unwind_Resume'"
BROKEN_OPTIONS+=CXX # "libcxxrt.so: undefined reference to `_Unwind_Resume_or_Rethrow'"
.endif
# LLVM lacks support for FreeBSD 64-bit atomic operations for ARMv4/ARMv5
.if ${__T} == "arm" || ${__T} == "armeb"
BROKEN_OPTIONS+=LLDB

2
share/mk/sys.mk
View File

@ -13,7 +13,7 @@ unix ?= We run FreeBSD, not UNIX.
# and/or endian. This is called MACHINE_CPU in NetBSD, but that's used
# for something different in FreeBSD.
#
MACHINE_CPUARCH=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/powerpc64/powerpc/}
MACHINE_CPUARCH=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/powerpc64/powerpc/:C/riscv64/riscv/}
.endif