diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/mkall.sh')
| -rwxr-xr-x | vendor/golang.org/x/sys/unix/mkall.sh | 143 |
1 files changed, 129 insertions, 14 deletions
diff --git a/vendor/golang.org/x/sys/unix/mkall.sh b/vendor/golang.org/x/sys/unix/mkall.sh index f0d6566..c1fc2ad 100755 --- a/vendor/golang.org/x/sys/unix/mkall.sh +++ b/vendor/golang.org/x/sys/unix/mkall.sh @@ -3,9 +3,75 @@ # Use of this source code is governed by a BSD-style # license that can be found in the LICENSE file. -# This script runs or (given -n) prints suggested commands to generate files for -# the Architecture/OS specified by the GOARCH and GOOS environment variables. -# See README.md for more information about how the build system works. +# The unix 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}_${GOARCH}" @@ -18,7 +84,6 @@ zsysctl="zsysctl_$GOOSARCH.go" mksysnum= mktypes= run="sh" -cmd="" case "$1" in -syscalls) @@ -33,7 +98,6 @@ case "$1" in ;; -n) run="cat" - cmd="echo" shift esac @@ -45,14 +109,6 @@ case "$#" in exit 2 esac -if [[ "$GOOS" = "linux" ]] && [[ "$GOARCH" != "sparc64" ]]; then - # Use then new build system - # Files generated through docker (use $cmd so you can Ctl-C the build or run) - $cmd docker build --tag generate:$GOOS $GOOS - $cmd docker run --interactive --tty --volume $(dirname "$(readlink -f "$0")"):/build generate:$GOOS - exit -fi - GOOSARCH_in=syscall_$GOOSARCH.go case "$GOOSARCH" in _* | *_ | _) @@ -111,6 +167,64 @@ freebsd_arm) # 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 $unistd_h" + # Let the type of C char be signed for making the bare syscall + # API consistent across over platforms. + mktypes="GOARCH=$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" + ;; +linux_s390x) + GOOSARCH_in=syscall_linux_s390x.go + unistd_h=/usr/include/asm/unistd.h + mkerrors="$mkerrors -m64" + mksysnum="./mksysnum_linux.pl $unistd_h" + # Let the type of C char be signed to make the bare sys + # API more consistent between platforms. + # This is a deliberate departure from the way the syscall + # package generates its version of the types file. + mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" + ;; linux_sparc64) GOOSARCH_in=syscall_linux_sparc64.go unistd_h=/usr/include/sparc64-linux-gnu/asm/unistd.h @@ -174,6 +288,7 @@ esac 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_$GOOS.go | go run mkpost.go > ztypes_$GOOSARCH.go"; + echo "echo // +build $GOARCH,$GOOS > ztypes_$GOOSARCH.go"; + echo "$mktypes types_$GOOS.go | go run mkpost.go >>ztypes_$GOOSARCH.go"; fi ) | $run |