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Editing: mkall.sh
#!/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= mkasm= run="sh" case "$1" in -syscalls) shift for i in ${@:-zsyscall*go} do # Run the command line that appears in the first line # of the generated file to regenerate it. 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:' "$GOOSARCH" 1>&2 exit 1 ;; aix_ppc64) mkerrors="$mkerrors -maix64" mksyscall="./mksyscall_libc.pl -aix" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; darwin_amd64) mkerrors="$mkerrors -m64" mksyscall="./mksyscall.pl -darwin" mktypes="GOARCH=$GOARCH go tool cgo -godefs" mkasm="go run mkasm.go" ;; darwin_arm64) mkerrors="$mkerrors -m64" mksyscall="./mksyscall.pl -darwin" mktypes="GOARCH=$GOARCH go tool cgo -godefs" mkasm="go run mkasm.go" ;; dragonfly_amd64) mkerrors="$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 signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" ;; freebsd_arm64) mkerrors="$mkerrors" mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" ;; freebsd_riscv64) mkerrors="$mkerrors" mksysnum="curl -s 'https://cgit.freebsd.org/src/plain/sys/kern/syscalls.master?h=stable/12' | ./mksysnum_freebsd.pl" # Let the type of C char be signed to make the bare syscall # API consistent between 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) GOOSARCH_in="syscall_linux_arm.go syscall_linux_accept.go" 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 $unistd_h" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" ;; linux_loong64) GOOSARCH_in=syscall_linux_loong64.go 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.h exit 1 fi mksysnum="./mksysnum_linux.pl $unistd_h" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; linux_mips) GOOSARCH_in=syscall_linux_mipsx.go unistd_h=/usr/include/asm/unistd.h mksyscall="./mksyscall.pl -b32 -arm" mkerrors="$mkerrors" mksysnum="./mksysnum_linux.pl $unistd_h" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; linux_mipsle) GOOSARCH_in=syscall_linux_mipsx.go unistd_h=/usr/include/asm/unistd.h mksyscall="./mksyscall.pl -l32 -arm" mkerrors="$mkerrors" mksysnum="./mksysnum_linux.pl $unistd_h" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; linux_mips64) GOOSARCH_in=syscall_linux_mips64x.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_mips64le) GOOSARCH_in=syscall_linux_mips64x.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_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" ;; linux_riscv64) 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 $unistd_h" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; linux_s390x) GOOSARCH_in=syscall_linux_s390x.go unistd_h=/usr/include/asm/unistd.h mkerrors="$mkerrors -m64" mksysnum="./mksysnum_linux.pl $unistd_h" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; 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" ;; netbsd_arm) mkerrors="$mkerrors -m32" mksyscall="./mksyscall.pl -l32 -netbsd -arm" mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl" mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; netbsd_arm64) 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) GOOSARCH_in="syscall_openbsd_libc.go syscall_openbsd_$GOARCH.go" mkerrors="$mkerrors -m32" mksyscall="./mksyscall.pl -l32 -openbsd -libc" 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=$GOARCH go tool cgo -godefs" mkasm="go run mkasm.go" ;; openbsd_amd64) GOOSARCH_in="syscall_openbsd_libc.go syscall_openbsd_$GOARCH.go" mkerrors="$mkerrors -m64" mksyscall="./mksyscall.pl -openbsd -libc" mksysctl="./mksysctl_openbsd.pl" zsysctl="zsysctl_openbsd.go" mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" mktypes="GOARCH=$GOARCH go tool cgo -godefs" mkasm="go run mkasm.go" ;; openbsd_arm) GOOSARCH_in="syscall_openbsd_libc.go syscall_openbsd_$GOARCH.go" mkerrors="$mkerrors" mksyscall="./mksyscall.pl -l32 -openbsd -arm -libc" 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" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" mkasm="go run mkasm.go" ;; openbsd_arm64) GOOSARCH_in="syscall_openbsd_libc.go syscall_openbsd_$GOARCH.go" mkerrors="$mkerrors -m64" mksyscall="./mksyscall.pl -openbsd -libc" mksysctl="./mksysctl_openbsd.pl" zsysctl="zsysctl_openbsd.go" mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" mkasm="go run mkasm.go" ;; openbsd_mips64) GOOSARCH_in="syscall_openbsd1.go syscall_openbsd_$GOARCH.go" mkerrors="$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" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" ;; openbsd_ppc64) GOOSARCH_in="syscall_openbsd_libc.go syscall_openbsd_$GOARCH.go" mkerrors="$mkerrors -m64" mksyscall="./mksyscall.pl -openbsd -libc" mksysctl="./mksysctl_openbsd.pl" zsysctl="zsysctl_openbsd.go" mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" mkasm="go run mkasm.go" ;; openbsd_riscv64) GOOSARCH_in="syscall_openbsd_libc.go syscall_openbsd_$GOARCH.go" mkerrors="$mkerrors -m64" mksyscall="./mksyscall.pl -openbsd -libc" 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" # Let the type of C char be signed to make the bare syscall # API consistent between platforms. mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" mkasm="go run mkasm.go" ;; plan9_386) mkerrors= mksyscall="./mksyscall.pl -l32 -plan9" mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h" mktypes="XXX" ;; solaris_amd64) mksyscall="./mksyscall_libc.pl -solaris" mkerrors="$mkerrors -m64" mksysnum= mktypes="GOARCH=$GOARCH go tool cgo -godefs" ;; windows_*) echo 'run "go generate" 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 -tags $GOOS,$GOARCH $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 "$mktypes" ]; then # ztypes_$GOOSARCH.go could be erased before "go run mkpost.go" is called. # Therefore, "go run" tries to recompile syscall package but ztypes is empty and it fails. echo "$mktypes types_$GOOS.go |go run mkpost.go >ztypes_$GOOSARCH.go.NEW && mv ztypes_$GOOSARCH.go.NEW ztypes_$GOOSARCH.go"; fi if [ -n "$mkasm" ]; then echo "$mkasm $GOOS $GOARCH"; fi ) | $run
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