aboutsummaryrefslogtreecommitdiffhomepage
path: root/vendor/golang.org/x/sys/unix/linux/mkall.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/golang.org/x/sys/unix/linux/mkall.go')
-rw-r--r--vendor/golang.org/x/sys/unix/linux/mkall.go750
1 files changed, 0 insertions, 750 deletions
diff --git a/vendor/golang.org/x/sys/unix/linux/mkall.go b/vendor/golang.org/x/sys/unix/linux/mkall.go
deleted file mode 100644
index 40b5cf4..0000000
--- a/vendor/golang.org/x/sys/unix/linux/mkall.go
+++ /dev/null
@@ -1,750 +0,0 @@
-// Copyright 2017 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.
-
-// linux/mkall.go - Generates all Linux zsysnum, zsyscall, zerror, and ztype
-// files for all 11 linux architectures supported by the go compiler. See
-// README.md for more information about the build system.
-
-// To run it you must have a git checkout of the Linux kernel and glibc. Once
-// the appropriate sources are ready, the program is run as:
-// go run linux/mkall.go <linux_dir> <glibc_dir>
-
-// +build ignore
-
-package main
-
-import (
- "bufio"
- "bytes"
- "debug/elf"
- "encoding/binary"
- "errors"
- "fmt"
- "io"
- "io/ioutil"
- "os"
- "os/exec"
- "path/filepath"
- "runtime"
- "strings"
- "unicode"
-)
-
-// These will be paths to the appropriate source directories.
-var LinuxDir string
-var GlibcDir string
-
-const TempDir = "/tmp"
-const IncludeDir = TempDir + "/include" // To hold our C headers
-const BuildDir = TempDir + "/build" // To hold intermediate build files
-
-const GOOS = "linux" // Only for Linux targets
-const BuildArch = "amd64" // Must be built on this architecture
-const MinKernel = "2.6.23" // https://golang.org/doc/install#requirements
-
-type target struct {
- GoArch string // Architecture name according to Go
- LinuxArch string // Architecture name according to the Linux Kernel
- GNUArch string // Architecture name according to GNU tools (https://wiki.debian.org/Multiarch/Tuples)
- BigEndian bool // Default Little Endian
- SignedChar bool // Is -fsigned-char needed (default no)
- Bits int
-}
-
-// List of the 11 Linux targets supported by the go compiler. sparc64 is not
-// currently supported, though a port is in progress.
-var targets = []target{
- {
- GoArch: "386",
- LinuxArch: "x86",
- GNUArch: "i686-linux-gnu", // Note "i686" not "i386"
- Bits: 32,
- },
- {
- GoArch: "amd64",
- LinuxArch: "x86",
- GNUArch: "x86_64-linux-gnu",
- Bits: 64,
- },
- {
- GoArch: "arm64",
- LinuxArch: "arm64",
- GNUArch: "aarch64-linux-gnu",
- SignedChar: true,
- Bits: 64,
- },
- {
- GoArch: "arm",
- LinuxArch: "arm",
- GNUArch: "arm-linux-gnueabi",
- Bits: 32,
- },
- {
- GoArch: "mips",
- LinuxArch: "mips",
- GNUArch: "mips-linux-gnu",
- BigEndian: true,
- Bits: 32,
- },
- {
- GoArch: "mipsle",
- LinuxArch: "mips",
- GNUArch: "mipsel-linux-gnu",
- Bits: 32,
- },
- {
- GoArch: "mips64",
- LinuxArch: "mips",
- GNUArch: "mips64-linux-gnuabi64",
- BigEndian: true,
- Bits: 64,
- },
- {
- GoArch: "mips64le",
- LinuxArch: "mips",
- GNUArch: "mips64el-linux-gnuabi64",
- Bits: 64,
- },
- {
- GoArch: "ppc64",
- LinuxArch: "powerpc",
- GNUArch: "powerpc64-linux-gnu",
- BigEndian: true,
- Bits: 64,
- },
- {
- GoArch: "ppc64le",
- LinuxArch: "powerpc",
- GNUArch: "powerpc64le-linux-gnu",
- Bits: 64,
- },
- {
- GoArch: "s390x",
- LinuxArch: "s390",
- GNUArch: "s390x-linux-gnu",
- BigEndian: true,
- SignedChar: true,
- Bits: 64,
- },
- // {
- // GoArch: "sparc64",
- // LinuxArch: "sparc",
- // GNUArch: "sparc64-linux-gnu",
- // BigEndian: true,
- // Bits: 64,
- // },
-}
-
-// ptracePairs is a list of pairs of targets that can, in some cases,
-// run each other's binaries.
-var ptracePairs = []struct{ a1, a2 string }{
- {"386", "amd64"},
- {"arm", "arm64"},
- {"mips", "mips64"},
- {"mipsle", "mips64le"},
-}
-
-func main() {
- if runtime.GOOS != GOOS || runtime.GOARCH != BuildArch {
- fmt.Printf("Build system has GOOS_GOARCH = %s_%s, need %s_%s\n",
- runtime.GOOS, runtime.GOARCH, GOOS, BuildArch)
- return
- }
-
- // Check that we are using the new build system if we should
- if os.Getenv("GOLANG_SYS_BUILD") != "docker" {
- fmt.Println("In the new build system, mkall.go should not be called directly.")
- fmt.Println("See README.md")
- return
- }
-
- // Parse the command line options
- if len(os.Args) != 3 {
- fmt.Println("USAGE: go run linux/mkall.go <linux_dir> <glibc_dir>")
- return
- }
- LinuxDir = os.Args[1]
- GlibcDir = os.Args[2]
-
- for _, t := range targets {
- fmt.Printf("----- GENERATING: %s -----\n", t.GoArch)
- if err := t.generateFiles(); err != nil {
- fmt.Printf("%v\n***** FAILURE: %s *****\n\n", err, t.GoArch)
- } else {
- fmt.Printf("----- SUCCESS: %s -----\n\n", t.GoArch)
- }
- }
-
- fmt.Printf("----- GENERATING ptrace pairs -----\n")
- ok := true
- for _, p := range ptracePairs {
- if err := generatePtracePair(p.a1, p.a2); err != nil {
- fmt.Printf("%v\n***** FAILURE: %s/%s *****\n\n", err, p.a1, p.a2)
- ok = false
- }
- }
- if ok {
- fmt.Printf("----- SUCCESS ptrace pairs -----\n\n")
- }
-}
-
-// Makes an exec.Cmd with Stderr attached to os.Stderr
-func makeCommand(name string, args ...string) *exec.Cmd {
- cmd := exec.Command(name, args...)
- cmd.Stderr = os.Stderr
- return cmd
-}
-
-// Runs the command, pipes output to a formatter, pipes that to an output file.
-func (t *target) commandFormatOutput(formatter string, outputFile string,
- name string, args ...string) (err error) {
- mainCmd := makeCommand(name, args...)
-
- fmtCmd := makeCommand(formatter)
- if formatter == "mkpost" {
- fmtCmd = makeCommand("go", "run", "mkpost.go")
- // Set GOARCH_TARGET so mkpost knows what GOARCH is..
- fmtCmd.Env = append(os.Environ(), "GOARCH_TARGET="+t.GoArch)
- // Set GOARCH to host arch for mkpost, so it can run natively.
- for i, s := range fmtCmd.Env {
- if strings.HasPrefix(s, "GOARCH=") {
- fmtCmd.Env[i] = "GOARCH=" + BuildArch
- }
- }
- }
-
- // mainCmd | fmtCmd > outputFile
- if fmtCmd.Stdin, err = mainCmd.StdoutPipe(); err != nil {
- return
- }
- if fmtCmd.Stdout, err = os.Create(outputFile); err != nil {
- return
- }
-
- // Make sure the formatter eventually closes
- if err = fmtCmd.Start(); err != nil {
- return
- }
- defer func() {
- fmtErr := fmtCmd.Wait()
- if err == nil {
- err = fmtErr
- }
- }()
-
- return mainCmd.Run()
-}
-
-// Generates all the files for a Linux target
-func (t *target) generateFiles() error {
- // Setup environment variables
- os.Setenv("GOOS", GOOS)
- os.Setenv("GOARCH", t.GoArch)
-
- // Get appropriate compiler and emulator (unless on x86)
- if t.LinuxArch != "x86" {
- // Check/Setup cross compiler
- compiler := t.GNUArch + "-gcc"
- if _, err := exec.LookPath(compiler); err != nil {
- return err
- }
- os.Setenv("CC", compiler)
-
- // Check/Setup emulator (usually first component of GNUArch)
- qemuArchName := t.GNUArch[:strings.Index(t.GNUArch, "-")]
- if t.LinuxArch == "powerpc" {
- qemuArchName = t.GoArch
- }
- os.Setenv("GORUN", "qemu-"+qemuArchName)
- } else {
- os.Setenv("CC", "gcc")
- }
-
- // Make the include directory and fill it with headers
- if err := os.MkdirAll(IncludeDir, os.ModePerm); err != nil {
- return err
- }
- defer os.RemoveAll(IncludeDir)
- if err := t.makeHeaders(); err != nil {
- return fmt.Errorf("could not make header files: %v", err)
- }
- fmt.Println("header files generated")
-
- // Make each of the four files
- if err := t.makeZSysnumFile(); err != nil {
- return fmt.Errorf("could not make zsysnum file: %v", err)
- }
- fmt.Println("zsysnum file generated")
-
- if err := t.makeZSyscallFile(); err != nil {
- return fmt.Errorf("could not make zsyscall file: %v", err)
- }
- fmt.Println("zsyscall file generated")
-
- if err := t.makeZTypesFile(); err != nil {
- return fmt.Errorf("could not make ztypes file: %v", err)
- }
- fmt.Println("ztypes file generated")
-
- if err := t.makeZErrorsFile(); err != nil {
- return fmt.Errorf("could not make zerrors file: %v", err)
- }
- fmt.Println("zerrors file generated")
-
- return nil
-}
-
-// Create the Linux, glibc and ABI (C compiler convention) headers in the include directory.
-func (t *target) makeHeaders() error {
- // Make the Linux headers we need for this architecture
- linuxMake := makeCommand("make", "headers_install", "ARCH="+t.LinuxArch, "INSTALL_HDR_PATH="+TempDir)
- linuxMake.Dir = LinuxDir
- if err := linuxMake.Run(); err != nil {
- return err
- }
-
- // A Temporary build directory for glibc
- if err := os.MkdirAll(BuildDir, os.ModePerm); err != nil {
- return err
- }
- defer os.RemoveAll(BuildDir)
-
- // Make the glibc headers we need for this architecture
- confScript := filepath.Join(GlibcDir, "configure")
- glibcConf := makeCommand(confScript, "--prefix="+TempDir, "--host="+t.GNUArch, "--enable-kernel="+MinKernel)
- glibcConf.Dir = BuildDir
- if err := glibcConf.Run(); err != nil {
- return err
- }
- glibcMake := makeCommand("make", "install-headers")
- glibcMake.Dir = BuildDir
- if err := glibcMake.Run(); err != nil {
- return err
- }
- // We only need an empty stubs file
- stubsFile := filepath.Join(IncludeDir, "gnu/stubs.h")
- if file, err := os.Create(stubsFile); err != nil {
- return err
- } else {
- file.Close()
- }
-
- // ABI headers will specify C compiler behavior for the target platform.
- return t.makeABIHeaders()
-}
-
-// makeABIHeaders generates C header files based on the platform's calling convention.
-// While many platforms have formal Application Binary Interfaces, in practice, whatever the
-// dominant C compilers generate is the de-facto calling convention.
-//
-// We generate C headers instead of a Go file, so as to enable references to the ABI from Cgo.
-func (t *target) makeABIHeaders() (err error) {
- abiDir := filepath.Join(IncludeDir, "abi")
- if err = os.Mkdir(abiDir, os.ModePerm); err != nil {
- return err
- }
-
- cc := os.Getenv("CC")
- if cc == "" {
- return errors.New("CC (compiler) env var not set")
- }
-
- // Build a sacrificial ELF file, to mine for C compiler behavior.
- binPath := filepath.Join(TempDir, "tmp_abi.o")
- bin, err := t.buildELF(cc, cCode, binPath)
- if err != nil {
- return fmt.Errorf("cannot build ELF to analyze: %v", err)
- }
- defer bin.Close()
- defer os.Remove(binPath)
-
- // Right now, we put everything in abi.h, but we may change this later.
- abiFile, err := os.Create(filepath.Join(abiDir, "abi.h"))
- if err != nil {
- return err
- }
- defer func() {
- if cerr := abiFile.Close(); cerr != nil && err == nil {
- err = cerr
- }
- }()
-
- if err = t.writeBitFieldMasks(bin, abiFile); err != nil {
- return fmt.Errorf("cannot write bitfield masks: %v", err)
- }
-
- return nil
-}
-
-func (t *target) buildELF(cc, src, path string) (*elf.File, error) {
- // Compile the cCode source using the set compiler - we will need its .data section.
- // Do not link the binary, so that we can find .data section offsets from the symbol values.
- ccCmd := makeCommand(cc, "-o", path, "-gdwarf", "-x", "c", "-c", "-")
- ccCmd.Stdin = strings.NewReader(src)
- ccCmd.Stdout = os.Stdout
- if err := ccCmd.Run(); err != nil {
- return nil, fmt.Errorf("compiler error: %v", err)
- }
-
- bin, err := elf.Open(path)
- if err != nil {
- return nil, fmt.Errorf("cannot read ELF file %s: %v", path, err)
- }
-
- return bin, nil
-}
-
-func (t *target) writeBitFieldMasks(bin *elf.File, out io.Writer) error {
- symbols, err := bin.Symbols()
- if err != nil {
- return fmt.Errorf("getting ELF symbols: %v", err)
- }
- var masksSym *elf.Symbol
-
- for _, sym := range symbols {
- if sym.Name == "masks" {
- masksSym = &sym
- }
- }
-
- if masksSym == nil {
- return errors.New("could not find the 'masks' symbol in ELF symtab")
- }
-
- dataSection := bin.Section(".data")
- if dataSection == nil {
- return errors.New("ELF file has no .data section")
- }
-
- data, err := dataSection.Data()
- if err != nil {
- return fmt.Errorf("could not read .data section: %v\n", err)
- }
-
- var bo binary.ByteOrder
- if t.BigEndian {
- bo = binary.BigEndian
- } else {
- bo = binary.LittleEndian
- }
-
- // 64 bit masks of type uint64 are stored in the data section starting at masks.Value.
- // Here we are running on AMD64, but these values may be big endian or little endian,
- // depending on target architecture.
- for i := uint64(0); i < 64; i++ {
- off := masksSym.Value + i*8
- // Define each mask in native by order, so as to match target endian.
- fmt.Fprintf(out, "#define BITFIELD_MASK_%d %dULL\n", i, bo.Uint64(data[off:off+8]))
- }
-
- return nil
-}
-
-// makes the zsysnum_linux_$GOARCH.go file
-func (t *target) makeZSysnumFile() error {
- zsysnumFile := fmt.Sprintf("zsysnum_linux_%s.go", t.GoArch)
- unistdFile := filepath.Join(IncludeDir, "asm/unistd.h")
-
- args := append(t.cFlags(), unistdFile)
- return t.commandFormatOutput("gofmt", zsysnumFile, "linux/mksysnum.pl", args...)
-}
-
-// makes the zsyscall_linux_$GOARCH.go file
-func (t *target) makeZSyscallFile() error {
- zsyscallFile := fmt.Sprintf("zsyscall_linux_%s.go", t.GoArch)
- // Find the correct architecture syscall file (might end with x.go)
- archSyscallFile := fmt.Sprintf("syscall_linux_%s.go", t.GoArch)
- if _, err := os.Stat(archSyscallFile); os.IsNotExist(err) {
- shortArch := strings.TrimSuffix(t.GoArch, "le")
- archSyscallFile = fmt.Sprintf("syscall_linux_%sx.go", shortArch)
- }
-
- args := append(t.mksyscallFlags(), "-tags", "linux,"+t.GoArch,
- "syscall_linux.go", archSyscallFile)
- return t.commandFormatOutput("gofmt", zsyscallFile, "./mksyscall.pl", args...)
-}
-
-// makes the zerrors_linux_$GOARCH.go file
-func (t *target) makeZErrorsFile() error {
- zerrorsFile := fmt.Sprintf("zerrors_linux_%s.go", t.GoArch)
-
- return t.commandFormatOutput("gofmt", zerrorsFile, "./mkerrors.sh", t.cFlags()...)
-}
-
-// makes the ztypes_linux_$GOARCH.go file
-func (t *target) makeZTypesFile() error {
- ztypesFile := fmt.Sprintf("ztypes_linux_%s.go", t.GoArch)
-
- args := []string{"tool", "cgo", "-godefs", "--"}
- args = append(args, t.cFlags()...)
- args = append(args, "linux/types.go")
- return t.commandFormatOutput("mkpost", ztypesFile, "go", args...)
-}
-
-// Flags that should be given to gcc and cgo for this target
-func (t *target) cFlags() []string {
- // Compile statically to avoid cross-architecture dynamic linking.
- flags := []string{"-Wall", "-Werror", "-static", "-I" + IncludeDir}
-
- // Architecture-specific flags
- if t.SignedChar {
- flags = append(flags, "-fsigned-char")
- }
- if t.LinuxArch == "x86" {
- flags = append(flags, fmt.Sprintf("-m%d", t.Bits))
- }
-
- return flags
-}
-
-// Flags that should be given to mksyscall for this target
-func (t *target) mksyscallFlags() (flags []string) {
- if t.Bits == 32 {
- if t.BigEndian {
- flags = append(flags, "-b32")
- } else {
- flags = append(flags, "-l32")
- }
- }
-
- // This flag menas a 64-bit value should use (even, odd)-pair.
- if t.GoArch == "arm" || (t.LinuxArch == "mips" && t.Bits == 32) {
- flags = append(flags, "-arm")
- }
- return
-}
-
-// generatePtracePair takes a pair of GOARCH values that can run each
-// other's binaries, such as 386 and amd64. It extracts the PtraceRegs
-// type for each one. It writes a new file defining the types
-// PtraceRegsArch1 and PtraceRegsArch2 and the corresponding functions
-// Ptrace{Get,Set}Regs{arch1,arch2}. This permits debugging the other
-// binary on a native system.
-func generatePtracePair(arch1, arch2 string) error {
- def1, err := ptraceDef(arch1)
- if err != nil {
- return err
- }
- def2, err := ptraceDef(arch2)
- if err != nil {
- return err
- }
- f, err := os.Create(fmt.Sprintf("zptrace%s_linux.go", arch1))
- if err != nil {
- return err
- }
- buf := bufio.NewWriter(f)
- fmt.Fprintf(buf, "// Code generated by linux/mkall.go generatePtracePair(%s, %s). DO NOT EDIT.\n", arch1, arch2)
- fmt.Fprintf(buf, "\n")
- fmt.Fprintf(buf, "// +build linux\n")
- fmt.Fprintf(buf, "// +build %s %s\n", arch1, arch2)
- fmt.Fprintf(buf, "\n")
- fmt.Fprintf(buf, "package unix\n")
- fmt.Fprintf(buf, "\n")
- fmt.Fprintf(buf, "%s\n", `import "unsafe"`)
- fmt.Fprintf(buf, "\n")
- writeOnePtrace(buf, arch1, def1)
- fmt.Fprintf(buf, "\n")
- writeOnePtrace(buf, arch2, def2)
- if err := buf.Flush(); err != nil {
- return err
- }
- if err := f.Close(); err != nil {
- return err
- }
- return nil
-}
-
-// ptraceDef returns the definition of PtraceRegs for arch.
-func ptraceDef(arch string) (string, error) {
- filename := fmt.Sprintf("ztypes_linux_%s.go", arch)
- data, err := ioutil.ReadFile(filename)
- if err != nil {
- return "", fmt.Errorf("reading %s: %v", filename, err)
- }
- start := bytes.Index(data, []byte("type PtraceRegs struct"))
- if start < 0 {
- return "", fmt.Errorf("%s: no definition of PtraceRegs", filename)
- }
- data = data[start:]
- end := bytes.Index(data, []byte("\n}\n"))
- if end < 0 {
- return "", fmt.Errorf("%s: can't find end of PtraceRegs definition", filename)
- }
- return string(data[:end+2]), nil
-}
-
-// writeOnePtrace writes out the ptrace definitions for arch.
-func writeOnePtrace(w io.Writer, arch, def string) {
- uarch := string(unicode.ToUpper(rune(arch[0]))) + arch[1:]
- fmt.Fprintf(w, "// PtraceRegs%s is the registers used by %s binaries.\n", uarch, arch)
- fmt.Fprintf(w, "%s\n", strings.Replace(def, "PtraceRegs", "PtraceRegs"+uarch, 1))
- fmt.Fprintf(w, "\n")
- fmt.Fprintf(w, "// PtraceGetRegs%s fetches the registers used by %s binaries.\n", uarch, arch)
- fmt.Fprintf(w, "func PtraceGetRegs%s(pid int, regsout *PtraceRegs%s) error {\n", uarch, uarch)
- fmt.Fprintf(w, "\treturn ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))\n")
- fmt.Fprintf(w, "}\n")
- fmt.Fprintf(w, "\n")
- fmt.Fprintf(w, "// PtraceSetRegs%s sets the registers used by %s binaries.\n", uarch, arch)
- fmt.Fprintf(w, "func PtraceSetRegs%s(pid int, regs *PtraceRegs%s) error {\n", uarch, uarch)
- fmt.Fprintf(w, "\treturn ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))\n")
- fmt.Fprintf(w, "}\n")
-}
-
-// cCode is compiled for the target architecture, and the resulting data section is carved for
-// the statically initialized bit masks.
-const cCode = `
-// Bit fields are used in some system calls and other ABIs, but their memory layout is
-// implementation-defined [1]. Even with formal ABIs, bit fields are a source of subtle bugs [2].
-// Here we generate the offsets for all 64 bits in an uint64.
-// 1: http://en.cppreference.com/w/c/language/bit_field
-// 2: https://lwn.net/Articles/478657/
-
-#include <stdint.h>
-
-struct bitfield {
- union {
- uint64_t val;
- struct {
- uint64_t u64_bit_0 : 1;
- uint64_t u64_bit_1 : 1;
- uint64_t u64_bit_2 : 1;
- uint64_t u64_bit_3 : 1;
- uint64_t u64_bit_4 : 1;
- uint64_t u64_bit_5 : 1;
- uint64_t u64_bit_6 : 1;
- uint64_t u64_bit_7 : 1;
- uint64_t u64_bit_8 : 1;
- uint64_t u64_bit_9 : 1;
- uint64_t u64_bit_10 : 1;
- uint64_t u64_bit_11 : 1;
- uint64_t u64_bit_12 : 1;
- uint64_t u64_bit_13 : 1;
- uint64_t u64_bit_14 : 1;
- uint64_t u64_bit_15 : 1;
- uint64_t u64_bit_16 : 1;
- uint64_t u64_bit_17 : 1;
- uint64_t u64_bit_18 : 1;
- uint64_t u64_bit_19 : 1;
- uint64_t u64_bit_20 : 1;
- uint64_t u64_bit_21 : 1;
- uint64_t u64_bit_22 : 1;
- uint64_t u64_bit_23 : 1;
- uint64_t u64_bit_24 : 1;
- uint64_t u64_bit_25 : 1;
- uint64_t u64_bit_26 : 1;
- uint64_t u64_bit_27 : 1;
- uint64_t u64_bit_28 : 1;
- uint64_t u64_bit_29 : 1;
- uint64_t u64_bit_30 : 1;
- uint64_t u64_bit_31 : 1;
- uint64_t u64_bit_32 : 1;
- uint64_t u64_bit_33 : 1;
- uint64_t u64_bit_34 : 1;
- uint64_t u64_bit_35 : 1;
- uint64_t u64_bit_36 : 1;
- uint64_t u64_bit_37 : 1;
- uint64_t u64_bit_38 : 1;
- uint64_t u64_bit_39 : 1;
- uint64_t u64_bit_40 : 1;
- uint64_t u64_bit_41 : 1;
- uint64_t u64_bit_42 : 1;
- uint64_t u64_bit_43 : 1;
- uint64_t u64_bit_44 : 1;
- uint64_t u64_bit_45 : 1;
- uint64_t u64_bit_46 : 1;
- uint64_t u64_bit_47 : 1;
- uint64_t u64_bit_48 : 1;
- uint64_t u64_bit_49 : 1;
- uint64_t u64_bit_50 : 1;
- uint64_t u64_bit_51 : 1;
- uint64_t u64_bit_52 : 1;
- uint64_t u64_bit_53 : 1;
- uint64_t u64_bit_54 : 1;
- uint64_t u64_bit_55 : 1;
- uint64_t u64_bit_56 : 1;
- uint64_t u64_bit_57 : 1;
- uint64_t u64_bit_58 : 1;
- uint64_t u64_bit_59 : 1;
- uint64_t u64_bit_60 : 1;
- uint64_t u64_bit_61 : 1;
- uint64_t u64_bit_62 : 1;
- uint64_t u64_bit_63 : 1;
- };
- };
-};
-
-struct bitfield masks[] = {
- {.u64_bit_0 = 1},
- {.u64_bit_1 = 1},
- {.u64_bit_2 = 1},
- {.u64_bit_3 = 1},
- {.u64_bit_4 = 1},
- {.u64_bit_5 = 1},
- {.u64_bit_6 = 1},
- {.u64_bit_7 = 1},
- {.u64_bit_8 = 1},
- {.u64_bit_9 = 1},
- {.u64_bit_10 = 1},
- {.u64_bit_11 = 1},
- {.u64_bit_12 = 1},
- {.u64_bit_13 = 1},
- {.u64_bit_14 = 1},
- {.u64_bit_15 = 1},
- {.u64_bit_16 = 1},
- {.u64_bit_17 = 1},
- {.u64_bit_18 = 1},
- {.u64_bit_19 = 1},
- {.u64_bit_20 = 1},
- {.u64_bit_21 = 1},
- {.u64_bit_22 = 1},
- {.u64_bit_23 = 1},
- {.u64_bit_24 = 1},
- {.u64_bit_25 = 1},
- {.u64_bit_26 = 1},
- {.u64_bit_27 = 1},
- {.u64_bit_28 = 1},
- {.u64_bit_29 = 1},
- {.u64_bit_30 = 1},
- {.u64_bit_31 = 1},
- {.u64_bit_32 = 1},
- {.u64_bit_33 = 1},
- {.u64_bit_34 = 1},
- {.u64_bit_35 = 1},
- {.u64_bit_36 = 1},
- {.u64_bit_37 = 1},
- {.u64_bit_38 = 1},
- {.u64_bit_39 = 1},
- {.u64_bit_40 = 1},
- {.u64_bit_41 = 1},
- {.u64_bit_42 = 1},
- {.u64_bit_43 = 1},
- {.u64_bit_44 = 1},
- {.u64_bit_45 = 1},
- {.u64_bit_46 = 1},
- {.u64_bit_47 = 1},
- {.u64_bit_48 = 1},
- {.u64_bit_49 = 1},
- {.u64_bit_50 = 1},
- {.u64_bit_51 = 1},
- {.u64_bit_52 = 1},
- {.u64_bit_53 = 1},
- {.u64_bit_54 = 1},
- {.u64_bit_55 = 1},
- {.u64_bit_56 = 1},
- {.u64_bit_57 = 1},
- {.u64_bit_58 = 1},
- {.u64_bit_59 = 1},
- {.u64_bit_60 = 1},
- {.u64_bit_61 = 1},
- {.u64_bit_62 = 1},
- {.u64_bit_63 = 1}
-};
-
-int main(int argc, char **argv) {
- struct bitfield *mask_ptr = &masks[0];
- return mask_ptr->val;
-}
-
-`
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 05:40:22 +0000