github.com/x04/go/src@v0.0.0-20200202162449-3d481ceb3525/syscall/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 syscall 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 mkasm= 87 run="sh" 88 89 case "$1" in 90 -syscalls) 91 for i in zsyscall*go 92 do 93 # Run the command line that appears in the first line 94 # of the generated file to regenerate it. 95 sed 1q $i | sed 's;^// ;;' | sh > _$i && gofmt < _$i > $i 96 rm _$i 97 done 98 exit 0 99 ;; 100 -n) 101 run="cat" 102 shift 103 esac 104 105 case "$#" in 106 0) 107 ;; 108 *) 109 echo 'usage: mkall.sh [-n]' 1>&2 110 exit 2 111 esac 112 113 GOOSARCH_in=syscall_$GOOSARCH.go 114 case "$GOOSARCH" in 115 _* | *_ | _) 116 echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2 117 exit 1 118 ;; 119 aix_ppc64) 120 mkerrors="$mkerrors -maix64" 121 mksyscall="./mksyscall_libc.pl -aix" 122 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 123 ;; 124 darwin_386) 125 mkerrors="$mkerrors -m32" 126 mksyscall="./mksyscall.pl -l32 -darwin" 127 mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h" 128 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 129 mkasm="go run mkasm_darwin.go" 130 ;; 131 darwin_amd64) 132 mkerrors="$mkerrors -m64" 133 mksyscall="./mksyscall.pl -darwin" 134 mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h" 135 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 136 mkasm="go run mkasm_darwin.go" 137 ;; 138 darwin_arm64) 139 mkerrors="$mkerrors -m64" 140 mksyscall="./mksyscall.pl -darwin" 141 mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h" 142 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 143 mkasm="go run mkasm_darwin.go" 144 ;; 145 darwin_arm) 146 mkerrors="$mkerrors -m32" 147 mksyscall="./mksyscall.pl -l32 -darwin" 148 mksysnum="./mksysnum_darwin.pl /usr/include/sys/syscall.h" 149 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 150 mkasm="go run mkasm_darwin.go" 151 ;; 152 dragonfly_amd64) 153 mkerrors="$mkerrors -m64" 154 mksyscall="./mksyscall.pl -dragonfly" 155 mksysnum="curl -s 'http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master' | ./mksysnum_dragonfly.pl" 156 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 157 ;; 158 freebsd_386) 159 mkerrors="$mkerrors -m32" 160 mksyscall="./mksyscall.pl -l32" 161 mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl" 162 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 163 ;; 164 freebsd_amd64) 165 mkerrors="$mkerrors -m64" 166 mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl" 167 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 168 ;; 169 freebsd_arm) 170 mkerrors="$mkerrors" 171 mksyscall="./mksyscall.pl -l32 -arm" 172 mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl" 173 # Let the type of C char be signed to make the bare syscall 174 # API consistent between platforms. 175 mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" 176 ;; 177 freebsd_arm64) 178 mkerrors="$mkerrors" 179 mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl" 180 # Let the type of C char be signed to make the bare syscall 181 # API consistent between platforms. 182 mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" 183 ;; 184 linux_386) 185 mkerrors="$mkerrors -m32" 186 mksyscall="./mksyscall.pl -l32" 187 mksysnum="./mksysnum_linux.pl /usr/include/asm/unistd_32.h" 188 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 189 ;; 190 linux_amd64) 191 unistd_h=$(ls -1 /usr/include/asm/unistd_64.h /usr/include/x86_64-linux-gnu/asm/unistd_64.h 2>/dev/null | head -1) 192 if [ "$unistd_h" = "" ]; then 193 echo >&2 cannot find unistd_64.h 194 exit 1 195 fi 196 mkerrors="$mkerrors -m64" 197 mksysnum="./mksysnum_linux.pl $unistd_h" 198 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 199 ;; 200 linux_arm) 201 mkerrors="$mkerrors" 202 mksyscall="./mksyscall.pl -l32 -arm" 203 mksysnum="curl -s 'http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/plain/arch/arm/include/uapi/asm/unistd.h' | ./mksysnum_linux.pl -" 204 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 205 ;; 206 linux_arm64) 207 unistd_h=$(ls -1 /usr/include/asm/unistd.h /usr/include/asm-generic/unistd.h 2>/dev/null | head -1) 208 if [ "$unistd_h" = "" ]; then 209 echo >&2 cannot find unistd_64.h 210 exit 1 211 fi 212 mksysnum="./mksysnum_linux.pl $unistd_h" 213 # Let the type of C char be signed to make the bare syscall 214 # API consistent between platforms. 215 mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" 216 ;; 217 linux_mips) 218 GOOSARCH_in=syscall_linux_mipsx.go 219 unistd_h=/usr/include/asm/unistd.h 220 mksyscall="./mksyscall.pl -b32 -arm" 221 mkerrors="$mkerrors" 222 mksysnum="./mksysnum_linux.pl $unistd_h" 223 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 224 ;; 225 linux_mipsle) 226 GOOSARCH_in=syscall_linux_mipsx.go 227 unistd_h=/usr/include/asm/unistd.h 228 mksyscall="./mksyscall.pl -l32 -arm" 229 mkerrors="$mkerrors" 230 mksysnum="./mksysnum_linux.pl $unistd_h" 231 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 232 ;; 233 linux_mips64) 234 GOOSARCH_in=syscall_linux_mips64x.go 235 unistd_h=/usr/include/asm/unistd.h 236 mkerrors="$mkerrors -m64" 237 mksysnum="./mksysnum_linux.pl $unistd_h" 238 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 239 ;; 240 linux_mips64le) 241 GOOSARCH_in=syscall_linux_mips64x.go 242 unistd_h=/usr/include/asm/unistd.h 243 mkerrors="$mkerrors -m64" 244 mksysnum="./mksysnum_linux.pl $unistd_h" 245 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 246 ;; 247 linux_ppc64) 248 GOOSARCH_in=syscall_linux_ppc64x.go 249 unistd_h=/usr/include/asm/unistd.h 250 mkerrors="$mkerrors -m64" 251 mksysnum="./mksysnum_linux.pl $unistd_h" 252 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 253 ;; 254 linux_ppc64le) 255 GOOSARCH_in=syscall_linux_ppc64x.go 256 unistd_h=/usr/include/powerpc64le-linux-gnu/asm/unistd.h 257 mkerrors="$mkerrors -m64" 258 mksysnum="./mksysnum_linux.pl $unistd_h" 259 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 260 ;; 261 linux_riscv64) 262 unistd_h=$(ls -1 /usr/include/asm/unistd.h /usr/include/asm-generic/unistd.h 2>/dev/null | head -1) 263 if [ "$unistd_h" = "" ]; then 264 echo >&2 cannot find unistd_64.h 265 exit 1 266 fi 267 mksysnum="./mksysnum_linux.pl $unistd_h" 268 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 269 ;; 270 linux_s390x) 271 GOOSARCH_in=syscall_linux_s390x.go 272 unistd_h=/usr/include/asm/unistd.h 273 mkerrors="$mkerrors -m64" 274 mksysnum="./mksysnum_linux.pl $unistd_h" 275 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 276 ;; 277 netbsd_386) 278 mkerrors="$mkerrors -m32" 279 mksyscall="./mksyscall.pl -l32 -netbsd" 280 mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl" 281 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 282 ;; 283 netbsd_amd64) 284 mkerrors="$mkerrors -m64" 285 mksyscall="./mksyscall.pl -netbsd" 286 mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl" 287 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 288 ;; 289 netbsd_arm) 290 mkerrors="$mkerrors -m32" 291 mksyscall="./mksyscall.pl -l32 -netbsd -arm" 292 mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl" 293 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 294 ;; 295 netbsd_arm64) 296 mkerrors="$mkerrors -m64" 297 mksyscall="./mksyscall.pl -netbsd" 298 mksysnum="curl -s 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_netbsd.pl" 299 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 300 ;; 301 openbsd_386) 302 mkerrors="$mkerrors -m32" 303 mksyscall="./mksyscall.pl -l32 -openbsd" 304 mksysctl="./mksysctl_openbsd.pl" 305 zsysctl="zsysctl_openbsd.go" 306 mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" 307 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 308 ;; 309 openbsd_amd64) 310 mkerrors="$mkerrors -m64" 311 mksyscall="./mksyscall.pl -openbsd" 312 mksysctl="./mksysctl_openbsd.pl" 313 zsysctl="zsysctl_openbsd.go" 314 mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" 315 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 316 ;; 317 openbsd_arm) 318 mkerrors="$mkerrors" 319 mksyscall="./mksyscall.pl -l32 -openbsd -arm" 320 mksysctl="./mksysctl_openbsd.pl" 321 zsysctl="zsysctl_openbsd.go" 322 mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" 323 # Let the type of C char be signed to make the bare syscall 324 # API consistent between platforms. 325 mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" 326 ;; 327 openbsd_arm64) 328 mkerrors="$mkerrors -m64" 329 mksyscall="./mksyscall.pl -openbsd" 330 mksysctl="./mksysctl_openbsd.pl" 331 zsysctl="zsysctl_openbsd.go" 332 mksysnum="curl -s 'http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master' | ./mksysnum_openbsd.pl" 333 # Let the type of C char be signed to make the bare syscall 334 # API consistent between platforms. 335 mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char" 336 ;; 337 plan9_386) 338 mkerrors= 339 mksyscall="./mksyscall.pl -l32 -plan9" 340 mksysnum="./mksysnum_plan9.sh /n/sources/plan9/sys/src/libc/9syscall/sys.h" 341 mktypes="XXX" 342 ;; 343 solaris_amd64) 344 mksyscall="./mksyscall_libc.pl -solaris" 345 mkerrors="$mkerrors -m64" 346 mksysnum= 347 mktypes="GOARCH=$GOARCH go tool cgo -godefs" 348 ;; 349 windows_*) 350 echo 'run "go generate" instead' 1>&2 351 exit 1 352 ;; 353 *) 354 echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2 355 exit 1 356 ;; 357 esac 358 359 ( 360 if [ -n "$mkerrors" ]; then echo "$mkerrors |gofmt >$zerrors"; fi 361 syscall_goos="syscall_$GOOS.go" 362 case "$GOOS" in 363 darwin | dragonfly | freebsd | netbsd | openbsd) 364 syscall_goos="syscall_bsd.go $syscall_goos" 365 ;; 366 esac 367 if [ -n "$mksyscall" ]; then echo "$mksyscall -tags $GOOS,$GOARCH $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go"; fi 368 if [ -n "$mksysctl" ]; then echo "$mksysctl |gofmt >$zsysctl"; fi 369 if [ -n "$mksysnum" ]; then echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"; fi 370 if [ -n "$mktypes" ]; then 371 # ztypes_$GOOSARCH.go could be erased before "go run mkpost.go" is called. 372 # Therefore, "go run" tries to recompile syscall package but ztypes is empty and it fails. 373 echo "$mktypes types_$GOOS.go |go run mkpost.go >ztypes_$GOOSARCH.go.NEW && mv ztypes_$GOOSARCH.go.NEW ztypes_$GOOSARCH.go"; 374 fi 375 if [ -n "$mkasm" ]; then echo "$mkasm $GOARCH"; fi 376 ) | $run