github.com/jgarto/itcv@v0.0.0-20180826224514-4eea09c1aa0d/_vendor/src/golang.org/x/sys/unix/mkall.sh (about)

     1  #!/usr/bin/env bash
     2  # Copyright 2009 The Go Authors. All rights reserved.
     3  # Use of this source code is governed by a BSD-style
     4  # license that can be found in the LICENSE file.
     5  
     6  # The unix package provides access to the raw system call
     7  # interface of the underlying operating system.  Porting Go to
     8  # a new architecture/operating system combination requires
     9  # some manual effort, though there are tools that automate
    10  # much of the process.  The auto-generated files have names
    11  # beginning with z.
    12  #
    13  # This script runs or (given -n) prints suggested commands to generate z files
    14  # for the current system.  Running those commands is not automatic.
    15  # This script is documentation more than anything else.
    16  #
    17  # * asm_${GOOS}_${GOARCH}.s
    18  #
    19  # This hand-written assembly file implements system call dispatch.
    20  # There are three entry points:
    21  #
    22  # 	func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
    23  # 	func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
    24  # 	func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr);
    25  #
    26  # The first and second are the standard ones; they differ only in
    27  # how many arguments can be passed to the kernel.
    28  # The third is for low-level use by the ForkExec wrapper;
    29  # unlike the first two, it does not call into the scheduler to
    30  # let it know that a system call is running.
    31  #
    32  # * syscall_${GOOS}.go
    33  #
    34  # This hand-written Go file implements system calls that need
    35  # special handling and lists "//sys" comments giving prototypes
    36  # for ones that can be auto-generated.  Mksyscall reads those
    37  # comments to generate the stubs.
    38  #
    39  # * syscall_${GOOS}_${GOARCH}.go
    40  #
    41  # Same as syscall_${GOOS}.go except that it contains code specific
    42  # to ${GOOS} on one particular architecture.
    43  #
    44  # * types_${GOOS}.c
    45  #
    46  # This hand-written C file includes standard C headers and then
    47  # creates typedef or enum names beginning with a dollar sign
    48  # (use of $ in variable names is a gcc extension).  The hardest
    49  # part about preparing this file is figuring out which headers to
    50  # include and which symbols need to be #defined to get the
    51  # actual data structures that pass through to the kernel system calls.
    52  # Some C libraries present alternate versions for binary compatibility
    53  # and translate them on the way in and out of system calls, but
    54  # there is almost always a #define that can get the real ones.
    55  # See types_darwin.c and types_linux.c for examples.
    56  #
    57  # * zerror_${GOOS}_${GOARCH}.go
    58  #
    59  # This machine-generated file defines the system's error numbers,
    60  # error strings, and signal numbers.  The generator is "mkerrors.sh".
    61  # Usually no arguments are needed, but mkerrors.sh will pass its
    62  # arguments on to godefs.
    63  #
    64  # * zsyscall_${GOOS}_${GOARCH}.go
    65  #
    66  # Generated by mksyscall.pl; see syscall_${GOOS}.go above.
    67  #
    68  # * zsysnum_${GOOS}_${GOARCH}.go
    69  #
    70  # Generated by mksysnum_${GOOS}.
    71  #
    72  # * ztypes_${GOOS}_${GOARCH}.go
    73  #
    74  # Generated by godefs; see types_${GOOS}.c above.
    75  
    76  GOOSARCH="${GOOS}_${GOARCH}"
    77  
    78  # defaults
    79  mksyscall="./mksyscall.pl"
    80  mkerrors="./mkerrors.sh"
    81  zerrors="zerrors_$GOOSARCH.go"
    82  mksysctl=""
    83  zsysctl="zsysctl_$GOOSARCH.go"
    84  mksysnum=
    85  mktypes=
    86  run="sh"
    87  
    88  case "$1" in
    89  -syscalls)
    90  	for i in zsyscall*go
    91  	do
    92  		# Run the command line that appears in the first line
    93  		# of the generated file to regenerate it.
    94  		sed 1q $i | sed 's;^// ;;' | sh > _$i && gofmt < _$i > $i
    95  		rm _$i
    96  	done
    97  	exit 0
    98  	;;
    99  -n)
   100  	run="cat"
   101  	shift
   102  esac
   103  
   104  case "$#" in
   105  0)
   106  	;;
   107  *)
   108  	echo 'usage: mkall.sh [-n]' 1>&2
   109  	exit 2
   110  esac
   111  
   112  GOOSARCH_in=syscall_$GOOSARCH.go
   113  case "$GOOSARCH" in
   114  _* | *_ | _)
   115  	echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
   116  	exit 1
   117  	;;
   118  darwin_386)
   119  	mkerrors="$mkerrors -m32"
   120  	mksyscall="./mksyscall.pl -l32"
   121  	mksysnum="./mksysnum_darwin.pl $(xcrun --show-sdk-path --sdk macosx)/usr/include/sys/syscall.h"
   122  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   123  	;;
   124  darwin_amd64)
   125  	mkerrors="$mkerrors -m64"
   126  	mksysnum="./mksysnum_darwin.pl $(xcrun --show-sdk-path --sdk macosx)/usr/include/sys/syscall.h"
   127  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   128  	;;
   129  darwin_arm)
   130  	mkerrors="$mkerrors"
   131  	mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h"
   132  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   133  	;;
   134  darwin_arm64)
   135  	mkerrors="$mkerrors -m64"
   136  	mksysnum="./mksysnum_darwin.pl $(xcrun --show-sdk-path --sdk iphoneos)/usr/include/sys/syscall.h"
   137  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   138  	;;
   139  dragonfly_386)
   140  	mkerrors="$mkerrors -m32"
   141  	mksyscall="./mksyscall.pl -l32 -dragonfly"
   142  	mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' | ./mksysnum_dragonfly.pl"
   143  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   144  	;;
   145  dragonfly_amd64)
   146  	mkerrors="$mkerrors -m64"
   147  	mksyscall="./mksyscall.pl -dragonfly"
   148  	mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' | ./mksysnum_dragonfly.pl"
   149  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   150  	;;
   151  freebsd_386)
   152  	mkerrors="$mkerrors -m32"
   153  	mksyscall="./mksyscall.pl -l32"
   154  	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
   155  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   156  	;;
   157  freebsd_amd64)
   158  	mkerrors="$mkerrors -m64"
   159  	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
   160  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   161  	;;
   162  freebsd_arm)
   163  	mkerrors="$mkerrors"
   164  	mksyscall="./mksyscall.pl -l32 -arm"
   165  	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
   166  	# Let the type of C char be signed for making the bare syscall
   167  	# API consistent across over platforms.
   168  	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
   169  	;;
   170  linux_386)
   171  	mkerrors="$mkerrors -m32"
   172  	mksyscall="./mksyscall.pl -l32"
   173  	mksysnum="./mksysnum_linux.pl /usr/include/asm/unistd_32.h"
   174  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   175  	;;
   176  linux_amd64)
   177  	unistd_h=$(ls -1 /usr/include/asm/unistd_64.h /usr/include/x86_64-linux-gnu/asm/unistd_64.h 2>/dev/null | head -1)
   178  	if [ "$unistd_h" = "" ]; then
   179  		echo >&2 cannot find unistd_64.h
   180  		exit 1
   181  	fi
   182  	mkerrors="$mkerrors -m64"
   183  	mksysnum="./mksysnum_linux.pl $unistd_h"
   184  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   185  	;;
   186  linux_arm)
   187  	mkerrors="$mkerrors"
   188  	mksyscall="./mksyscall.pl -l32 -arm"
   189  	mksysnum="curl -s 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/plain/arch/arm/include/uapi/asm/unistd.h' | ./mksysnum_linux.pl -"
   190  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   191  	;;
   192  linux_arm64)
   193  	unistd_h=$(ls -1 /usr/include/asm/unistd.h /usr/include/asm-generic/unistd.h 2>/dev/null | head -1)
   194  	if [ "$unistd_h" = "" ]; then
   195  		echo >&2 cannot find unistd_64.h
   196  		exit 1
   197  	fi
   198  	mksysnum="./mksysnum_linux.pl $unistd_h"
   199  	# Let the type of C char be signed for making the bare syscall
   200  	# API consistent across over platforms.
   201  	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
   202  	;;
   203  linux_ppc64)
   204  	GOOSARCH_in=syscall_linux_ppc64x.go
   205  	unistd_h=/usr/include/asm/unistd.h
   206  	mkerrors="$mkerrors -m64"
   207  	mksysnum="./mksysnum_linux.pl $unistd_h"
   208  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   209  	;;
   210  linux_ppc64le)
   211  	GOOSARCH_in=syscall_linux_ppc64x.go
   212  	unistd_h=/usr/include/powerpc64le-linux-gnu/asm/unistd.h
   213  	mkerrors="$mkerrors -m64"
   214  	mksysnum="./mksysnum_linux.pl $unistd_h"
   215  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   216  	;;
   217  linux_s390x)
   218  	GOOSARCH_in=syscall_linux_s390x.go
   219  	unistd_h=/usr/include/asm/unistd.h
   220  	mkerrors="$mkerrors -m64"
   221  	mksysnum="./mksysnum_linux.pl $unistd_h"
   222  	# Let the type of C char be signed to make the bare sys
   223  	# API more consistent between platforms.
   224  	# This is a deliberate departure from the way the syscall
   225  	# package generates its version of the types file.
   226  	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
   227  	;;
   228  linux_sparc64)
   229  	GOOSARCH_in=syscall_linux_sparc64.go
   230  	unistd_h=/usr/include/sparc64-linux-gnu/asm/unistd.h
   231  	mkerrors="$mkerrors -m64"
   232  	mksysnum="./mksysnum_linux.pl $unistd_h"
   233  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   234  	;;
   235  netbsd_386)
   236  	mkerrors="$mkerrors -m32"
   237  	mksyscall="./mksyscall.pl -l32 -netbsd"
   238  	mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl"
   239  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   240  	;;
   241  netbsd_amd64)
   242  	mkerrors="$mkerrors -m64"
   243  	mksyscall="./mksyscall.pl -netbsd"
   244  	mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl"
   245  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   246  	;;
   247  openbsd_386)
   248  	mkerrors="$mkerrors -m32"
   249  	mksyscall="./mksyscall.pl -l32 -openbsd"
   250  	mksysctl="./mksysctl_openbsd.pl"
   251  	zsysctl="zsysctl_openbsd.go"
   252  	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"
   253  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   254  	;;
   255  openbsd_amd64)
   256  	mkerrors="$mkerrors -m64"
   257  	mksyscall="./mksyscall.pl -openbsd"
   258  	mksysctl="./mksysctl_openbsd.pl"
   259  	zsysctl="zsysctl_openbsd.go"
   260  	mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl"
   261  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   262  	;;
   263  solaris_amd64)
   264  	mksyscall="./mksyscall_solaris.pl"
   265  	mkerrors="$mkerrors -m64"
   266  	mksysnum=
   267  	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
   268  	;;
   269  *)
   270  	echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2
   271  	exit 1
   272  	;;
   273  esac
   274  
   275  (
   276  	if [ -n "$mkerrors" ]; then echo "$mkerrors |gofmt >$zerrors"; fi
   277  	case "$GOOS" in
   278  	*)
   279  		syscall_goos="syscall_$GOOS.go"
   280  		case "$GOOS" in
   281  		darwin | dragonfly | freebsd | netbsd | openbsd)
   282  			syscall_goos="syscall_bsd.go $syscall_goos"
   283  			;;
   284  		esac
   285  		if [ -n "$mksyscall" ]; then echo "$mksyscall -tags $GOOS,$GOARCH $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go"; fi
   286  		;;
   287  	esac
   288  	if [ -n "$mksysctl" ]; then echo "$mksysctl |gofmt >$zsysctl"; fi
   289  	if [ -n "$mksysnum" ]; then echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"; fi
   290  	if [ -n "$mktypes" ]; then
   291  		echo "echo // +build $GOARCH,$GOOS > ztypes_$GOOSARCH.go";
   292  		echo "$mktypes types_$GOOS.go | go run mkpost.go >>ztypes_$GOOSARCH.go";
   293  	fi
   294  ) | $run