src/syscall/mkall.sh - go - Git at Google


            
            #!/usr/bin/env bash

            
            # Copyright 2009 The Go Authors. All rights reserved.

            
            # Use of this source code is governed by a BSD-style

            
            # license that can be found in the LICENSE file.


            # The syscall package provides access to the raw system call

            
            # interface of the underlying operating system.  Porting Go to

            
            # a new architecture/operating system combination requires

            
            # some manual effort, though there are tools that automate

            
            # much of the process.  The auto-generated files have names

            
            # beginning with z.

            
            #

            
            # This script runs or (given -n) prints suggested commands to generate z files

            
            # for the current system.  Running those commands is not automatic.

            
            # This script is documentation more than anything else.

            
            #

            
            # * asm_${GOOS}_${GOARCH}.s

            
            #

            
            # This hand-written assembly file implements system call dispatch.

            
            # There are three entry points:

            
            #

            
            # 	func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);

            
            # 	func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);

            
            # 	func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);

            
            #

            
            # The first and second are the standard ones; they differ only in

            
            # how many arguments can be passed to the kernel.

            
            # The third is for low-level use by the ForkExec wrapper;

            
            # unlike the first two, it does not call into the scheduler to

            
            # let it know that a system call is running.

            
            #

            
            # * syscall_${GOOS}.go

            
            #

            
            # This hand-written Go file implements system calls that need

            
            # special handling and lists "//sys" comments giving prototypes

            
            # for ones that can be auto-generated.  Mksyscall reads those

            
            # comments to generate the stubs.

            
            #

            
            # * syscall_${GOOS}_${GOARCH}.go

            
            #

            
            # Same as syscall_${GOOS}.go except that it contains code specific

            
            # to ${GOOS} on one particular architecture.

            
            #

            
            # * types_${GOOS}.c

            
            #

            
            # This hand-written C file includes standard C headers and then

            
            # creates typedef or enum names beginning with a dollar sign

            
            # (use of $ in variable names is a gcc extension).  The hardest

            
            # part about preparing this file is figuring out which headers to

            
            # include and which symbols need to be #defined to get the

            
            # actual data structures that pass through to the kernel system calls.

            
            # Some C libraries present alternate versions for binary compatibility

            
            # and translate them on the way in and out of system calls, but

            
            # there is almost always a #define that can get the real ones.

            
            # See types_darwin.c and types_linux.c for examples.

            
            #

            
            # * zerror_${GOOS}_${GOARCH}.go

            
            #

            
            # This machine-generated file defines the system's error numbers,

            
            # error strings, and signal numbers.  The generator is "mkerrors.sh".

            
            # Usually no arguments are needed, but mkerrors.sh will pass its

            
            # arguments on to godefs.

            
            #

            
            # * zsyscall_${GOOS}_${GOARCH}.go

            
            #

            
            # Generated by mksyscall.pl; see syscall_${GOOS}.go above.

            
            #

            
            # * zsysnum_${GOOS}_${GOARCH}.go

            
            #

            
            # Generated by mksysnum_${GOOS}.

            
            #

            
            # * ztypes_${GOOS}_${GOARCH}.go

            
            #

            
            # Generated by godefs; see types_${GOOS}.c above.


            GOOSARCH="${GOOS}_${GOARCH}"


            # defaults

            
            mksyscall="./mksyscall.pl"

            
            mkerrors="./mkerrors.sh"

            
            zerrors="zerrors_$GOOSARCH.go"

            
            mksysctl=""

            
            zsysctl="zsysctl_$GOOSARCH.go"

            
            mksysnum=

            
            mktypes=

            
            run="sh"


            case "$1" in

            
            -syscalls)

            
            	for i in zsyscall*go

            
            	do

            
            		sed 1q $i | sed 's;^// ;;' | sh > _$i && gofmt < _$i > $i

            
            		rm _$i

            
            	done

            
            	exit 0

            
            	;;

            
            -n)

            
            	run="cat"

            
            	shift

            
            esac


            case "$#" in

            
            0)

            
            	;;

            
            *)

            
            	echo 'usage: mkall.sh [-n]' 1>&2

            
            	exit 2

            
            esac


            GOOSARCH_in=syscall_$GOOSARCH.go

            
            case "$GOOSARCH" in

            
            _* | *_ | _)

            
            	echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2

            
            	exit 1

            
            	;;

            
            darwin_386)

            
            	mkerrors="$mkerrors -m32"

            
            	mksyscall="./mksyscall.pl -l32"

            
            	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            darwin_amd64)

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            darwin_arm64)

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            dragonfly_386)

            
            	mkerrors="$mkerrors -m32"

            
            	mksyscall="./mksyscall.pl -l32 -dragonfly"

            
            	mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' | ./mksysnum_dragonfly.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            dragonfly_amd64)

            
            	mkerrors="$mkerrors -m64"

            
            	mksyscall="./mksyscall.pl -dragonfly"

            
            	mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' | ./mksysnum_dragonfly.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            freebsd_386)

            
            	mkerrors="$mkerrors -m32"

            
            	mksyscall="./mksyscall.pl -l32"

            
            	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            freebsd_amd64)

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            freebsd_arm)

            
            	mkerrors="$mkerrors"

            
            	mksyscall="./mksyscall.pl -l32 -arm"

            
            	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"

            
            	# Let the type of C char be singed for making the bare syscall

            
            	# API consistent across over platforms.

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"

            
            	;;

            
            linux_386)

            
            	mkerrors="$mkerrors -m32"

            
            	mksyscall="./mksyscall.pl -l32"

            
            	mksysnum="./mksysnum_linux.pl /usr/include/asm/unistd_32.h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            linux_amd64)

            
            	unistd_h=$(ls -1 /usr/include/asm/unistd_64.h /usr/include/x86_64-linux-gnu/asm/unistd_64.h 2>/dev/null | head -1)

            
            	if [ "$unistd_h" = "" ]; then

            
            		echo >&2 cannot find unistd_64.h

            
            		exit 1

            
            	fi

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum="./mksysnum_linux.pl $unistd_h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            linux_arm)

            
            	mkerrors="$mkerrors"

            
            	mksyscall="./mksyscall.pl -l32 -arm"

            
            	mksysnum="curl -s 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/plain/arch/arm/include/uapi/asm/unistd.h' | ./mksysnum_linux.pl -"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            linux_arm64)

            
            	unistd_h=$(ls -1 /usr/include/asm/unistd.h /usr/include/asm-generic/unistd.h 2>/dev/null | head -1)

            
            	if [ "$unistd_h" = "" ]; then

            
            		echo >&2 cannot find unistd_64.h

            
            		exit 1

            
            	fi

            
            	mksysnum="./mksysnum_linux.pl $unistd_h"

            
            	# Let the type of C char be singed for making the bare syscall

            
            	# API consistent across over platforms.

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"

            
            	;;

            
            linux_ppc64)

            
            	GOOSARCH_in=syscall_linux_ppc64x.go

            
            	unistd_h=/usr/include/asm/unistd.h

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum="./mksysnum_linux.pl $unistd_h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            linux_ppc64le)

            
            	GOOSARCH_in=syscall_linux_ppc64x.go

            
            	unistd_h=/usr/include/powerpc64le-linux-gnu/asm/unistd.h

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum="./mksysnum_linux.pl $unistd_h"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            nacl_386)

            
            	mkerrors=""

            
            	mksyscall="./mksyscall.pl -l32 -nacl"

            
            	mksysnum=""

            
            	mktypes=""

            
            	;;

            
            nacl_amd64p32)

            
            	mkerrors=""

            
            	mksyscall="./mksyscall.pl -nacl"

            
            	mksysnum=""

            
            	mktypes=""

            
            	;;

            
            netbsd_386)

            
            	mkerrors="$mkerrors -m32"

            
            	mksyscall="./mksyscall.pl -l32 -netbsd"

            
            	mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            netbsd_amd64)

            
            	mkerrors="$mkerrors -m64"

            
            	mksyscall="./mksyscall.pl -netbsd"

            
            	mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            openbsd_386)

            
            	mkerrors="$mkerrors -m32"

            
            	mksyscall="./mksyscall.pl -l32 -openbsd"

            
            	mksysctl="./mksysctl_openbsd.pl"

            
            	zsysctl="zsysctl_openbsd.go"

            
            	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            openbsd_amd64)

            
            	mkerrors="$mkerrors -m64"

            
            	mksyscall="./mksyscall.pl -openbsd"

            
            	mksysctl="./mksysctl_openbsd.pl"

            
            	zsysctl="zsysctl_openbsd.go"

            
            	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            openbsd_arm)

            
            	mkerrors="$mkerrors"

            
            	mksyscall="./mksyscall.pl -l32 -openbsd -arm"

            
            	mksysctl="./mksysctl_openbsd.pl"

            
            	zsysctl="zsysctl_openbsd.go"

            
            	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            plan9_386)

            
            	mkerrors=

            
            	mksyscall="./mksyscall.pl -l32 -plan9"

            
            	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"

            
            	mktypes="XXX"

            
            	;;

            
            solaris_amd64)

            
            	mksyscall="./mksyscall_solaris.pl"

            
            	mkerrors="$mkerrors -m64"

            
            	mksysnum=

            
            	mktypes="GOARCH=$GOARCH go tool cgo -godefs"

            
            	;;

            
            windows_*)

            
            	echo 'run "go generate syscall_windows.go" instead' 1>&2

            
            	exit 1

            
            	;;

            
            *)

            
            	echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2

            
            	exit 1

            
            	;;

            
            esac


            (

            
            	if [ -n "$mkerrors" ]; then echo "$mkerrors |gofmt >$zerrors"; fi

            
            	syscall_goos="syscall_$GOOS.go"

            
             	case "$GOOS" in

            
            	darwin | dragonfly | freebsd | netbsd | openbsd)

            
            		syscall_goos="syscall_bsd.go $syscall_goos"

            
             		;;

            
             	esac

            
            	if [ -n "$mksyscall" ]; then echo "$mksyscall $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go"; fi

            
            	if [ -n "$mksysctl" ]; then echo "$mksysctl |gofmt >$zsysctl"; fi

            
            	if [ -n "$mksysnum" ]; then echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"; fi

            
            	if [ -n "$mktypes" ]; then echo "$mktypes types_$GOOS.go |gofmt >ztypes_$GOOSARCH.go"; fi

            
            ) | $run
	#!/usr/bin/env bash
	# Copyright 2009 The Go Authors. All rights reserved.
	# Use of this source code is governed by a BSD-style
	# license that can be found in the LICENSE file.

	# The syscall package provides access to the raw system call
	# interface of the underlying operating system. Porting Go to
	# a new architecture/operating system combination requires
	# some manual effort, though there are tools that automate
	# much of the process. The auto-generated files have names
	# beginning with z.
	#
	# This script runs or (given -n) prints suggested commands to generate z files
	# for the current system. Running those commands is not automatic.
	# This script is documentation more than anything else.
	#
	# * asm_${GOOS}_${GOARCH}.s
	#
	# This hand-written assembly file implements system call dispatch.
	# There are three entry points:
	#
	# func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
	# func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
	# func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
	#
	# The first and second are the standard ones; they differ only in
	# how many arguments can be passed to the kernel.
	# The third is for low-level use by the ForkExec wrapper;
	# unlike the first two, it does not call into the scheduler to
	# let it know that a system call is running.
	#
	# * syscall_${GOOS}.go
	#
	# This hand-written Go file implements system calls that need
	# special handling and lists "//sys" comments giving prototypes
	# for ones that can be auto-generated. Mksyscall reads those
	# comments to generate the stubs.
	#
	# * syscall_${GOOS}_${GOARCH}.go
	#
	# Same as syscall_${GOOS}.go except that it contains code specific
	# to ${GOOS} on one particular architecture.
	#
	# * types_${GOOS}.c
	#
	# This hand-written C file includes standard C headers and then
	# creates typedef or enum names beginning with a dollar sign
	# (use of $ in variable names is a gcc extension). The hardest
	# part about preparing this file is figuring out which headers to
	# include and which symbols need to be #defined to get the
	# actual data structures that pass through to the kernel system calls.
	# Some C libraries present alternate versions for binary compatibility
	# and translate them on the way in and out of system calls, but
	# there is almost always a #define that can get the real ones.
	# See types_darwin.c and types_linux.c for examples.
	#
	# * zerror_${GOOS}_${GOARCH}.go
	#
	# This machine-generated file defines the system's error numbers,
	# error strings, and signal numbers. The generator is "mkerrors.sh".
	# Usually no arguments are needed, but mkerrors.sh will pass its
	# arguments on to godefs.
	#
	# * zsyscall_${GOOS}_${GOARCH}.go
	#
	# Generated by mksyscall.pl; see syscall_${GOOS}.go above.
	#
	# * zsysnum_${GOOS}_${GOARCH}.go
	#
	# Generated by mksysnum_${GOOS}.
	#
	# * ztypes_${GOOS}_${GOARCH}.go
	#
	# Generated by godefs; see types_${GOOS}.c above.

	GOOSARCH="${GOOS}_${GOARCH}"

	# defaults
	mksyscall="./mksyscall.pl"
	mkerrors="./mkerrors.sh"
	zerrors="zerrors_$GOOSARCH.go"
	mksysctl=""
	zsysctl="zsysctl_$GOOSARCH.go"
	mksysnum=
	mktypes=
	run="sh"

	case "$1" in
	-syscalls)
	for i in zsyscall*go
	do
	sed 1q $i \| sed 's;^// ;;' \| sh > _$i && gofmt < _$i > $i
	rm _$i
	done
	exit 0
	;;
	-n)
	run="cat"
	shift
	esac

	case "$#" in
	0)
	;;
	*)
	echo 'usage: mkall.sh [-n]' 1>&2
	exit 2
	esac

	GOOSARCH_in=syscall_$GOOSARCH.go
	case "$GOOSARCH" in
	_* \| *_ \| _)
	echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
	exit 1
	;;
	darwin_386)
	mkerrors="$mkerrors -m32"
	mksyscall="./mksyscall.pl -l32"
	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	darwin_amd64)
	mkerrors="$mkerrors -m64"
	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	darwin_arm64)
	mkerrors="$mkerrors -m64"
	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	dragonfly_386)
	mkerrors="$mkerrors -m32"
	mksyscall="./mksyscall.pl -l32 -dragonfly"
	mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' \| ./mksysnum_dragonfly.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	dragonfly_amd64)
	mkerrors="$mkerrors -m64"
	mksyscall="./mksyscall.pl -dragonfly"
	mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' \| ./mksysnum_dragonfly.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	freebsd_386)
	mkerrors="$mkerrors -m32"
	mksyscall="./mksyscall.pl -l32"
	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' \| ./mksysnum_freebsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	freebsd_amd64)
	mkerrors="$mkerrors -m64"
	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' \| ./mksysnum_freebsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	freebsd_arm)
	mkerrors="$mkerrors"
	mksyscall="./mksyscall.pl -l32 -arm"
	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' \| ./mksysnum_freebsd.pl"
	# Let the type of C char be singed for making the bare syscall
	# API consistent across over platforms.
	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
	;;
	linux_386)
	mkerrors="$mkerrors -m32"
	mksyscall="./mksyscall.pl -l32"
	mksysnum="./mksysnum_linux.pl /usr/include/asm/unistd_32.h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	linux_amd64)
	unistd_h=$(ls -1 /usr/include/asm/unistd_64.h /usr/include/x86_64-linux-gnu/asm/unistd_64.h 2>/dev/null \| head -1)
	if [ "$unistd_h" = "" ]; then
	echo >&2 cannot find unistd_64.h
	exit 1
	fi
	mkerrors="$mkerrors -m64"
	mksysnum="./mksysnum_linux.pl $unistd_h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	linux_arm)
	mkerrors="$mkerrors"
	mksyscall="./mksyscall.pl -l32 -arm"
	mksysnum="curl -s 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/plain/arch/arm/include/uapi/asm/unistd.h' \| ./mksysnum_linux.pl -"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	linux_arm64)
	unistd_h=$(ls -1 /usr/include/asm/unistd.h /usr/include/asm-generic/unistd.h 2>/dev/null \| head -1)
	if [ "$unistd_h" = "" ]; then
	echo >&2 cannot find unistd_64.h
	exit 1
	fi
	mksysnum="./mksysnum_linux.pl $unistd_h"
	# Let the type of C char be singed for making the bare syscall
	# API consistent across over platforms.
	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
	;;
	linux_ppc64)
	GOOSARCH_in=syscall_linux_ppc64x.go
	unistd_h=/usr/include/asm/unistd.h
	mkerrors="$mkerrors -m64"
	mksysnum="./mksysnum_linux.pl $unistd_h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	linux_ppc64le)
	GOOSARCH_in=syscall_linux_ppc64x.go
	unistd_h=/usr/include/powerpc64le-linux-gnu/asm/unistd.h
	mkerrors="$mkerrors -m64"
	mksysnum="./mksysnum_linux.pl $unistd_h"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	nacl_386)
	mkerrors=""
	mksyscall="./mksyscall.pl -l32 -nacl"
	mksysnum=""
	mktypes=""
	;;
	nacl_amd64p32)
	mkerrors=""
	mksyscall="./mksyscall.pl -nacl"
	mksysnum=""
	mktypes=""
	;;
	netbsd_386)
	mkerrors="$mkerrors -m32"
	mksyscall="./mksyscall.pl -l32 -netbsd"
	mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' \| ./mksysnum_netbsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	netbsd_amd64)
	mkerrors="$mkerrors -m64"
	mksyscall="./mksyscall.pl -netbsd"
	mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' \| ./mksysnum_netbsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	openbsd_386)
	mkerrors="$mkerrors -m32"
	mksyscall="./mksyscall.pl -l32 -openbsd"
	mksysctl="./mksysctl_openbsd.pl"
	zsysctl="zsysctl_openbsd.go"
	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' \| ./mksysnum_openbsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	openbsd_amd64)
	mkerrors="$mkerrors -m64"
	mksyscall="./mksyscall.pl -openbsd"
	mksysctl="./mksysctl_openbsd.pl"
	zsysctl="zsysctl_openbsd.go"
	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' \| ./mksysnum_openbsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	openbsd_arm)
	mkerrors="$mkerrors"
	mksyscall="./mksyscall.pl -l32 -openbsd -arm"
	mksysctl="./mksysctl_openbsd.pl"
	zsysctl="zsysctl_openbsd.go"
	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' \| ./mksysnum_openbsd.pl"
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	plan9_386)
	mkerrors=
	mksyscall="./mksyscall.pl -l32 -plan9"
	mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h"
	mktypes="XXX"
	;;
	solaris_amd64)
	mksyscall="./mksyscall_solaris.pl"
	mkerrors="$mkerrors -m64"
	mksysnum=
	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
	;;
	windows_*)
	echo 'run "go generate syscall_windows.go" instead' 1>&2
	exit 1
	;;
	*)
	echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2
	exit 1
	;;
	esac

	(
	if [ -n "$mkerrors" ]; then echo "$mkerrors \|gofmt >$zerrors"; fi
	syscall_goos="syscall_$GOOS.go"
	case "$GOOS" in
	darwin \| dragonfly \| freebsd \| netbsd \| openbsd)
	syscall_goos="syscall_bsd.go $syscall_goos"
	;;
	esac
	if [ -n "$mksyscall" ]; then echo "$mksyscall $syscall_goos $GOOSARCH_in \|gofmt >zsyscall_$GOOSARCH.go"; fi
	if [ -n "$mksysctl" ]; then echo "$mksysctl \|gofmt >$zsysctl"; fi
	if [ -n "$mksysnum" ]; then echo "$mksysnum \|gofmt >zsysnum_$GOOSARCH.go"; fi
	if [ -n "$mktypes" ]; then echo "$mktypes types_$GOOS.go \|gofmt >ztypes_$GOOSARCH.go"; fi
	) \| $run