"internal/itoa"
	runtimesyscall "internal/runtime/syscall"
	"runtime"
	"unsafe"
)

// Pull in entersyscall/exitsyscall for Syscall/Syscall6.
//
// Note that this can't be a push linkname because the runtime already has a
// nameless linkname to export to assembly here and in x/sys. Additionally,
// entersyscall fetches the caller PC and SP and thus can't have a wrapper
// inbetween.

// sigpanic calls can be injected.
//
// The signal handler must not inject a call to sigpanic if
// getg().throwsplit, since sigpanic may need to grow the stack.
//
// This is exported via linkname to assembly in runtime/cgo.
//
//go:linkname sigpanic
func sigpanic() {
	gp := getg()
	if !canpanic() {
		throw("unexpected signal during runtime execution")
	}

	switch gp.sig {
	case _SIGBUS:

	// a non-nil error for it, and Stat should return results identical to Lstat.
	linkName, err := os.Readlink(pythonPath)
	if err == nil {
		t.Errorf("os.Readlink(%q) = %q, but expected an error\n(should be an APPEXECLINK reparse point, not a symlink)", pythonPath, linkName)
	}

	sfi, err := os.Stat(pythonPath)
	if err != nil {
		t.Fatalf("Stat %s: %v", pythonPath, err)
	}

		flag2 |= goobj.SymFlagDict
	}
	if s.IsPkgInit() {
		flag2 |= goobj.SymFlagPkgInit
	}
	if s.IsLinkname() || (w.ctxt.IsAsm && name != "") || name == "main.main" {
		// Assembly reference is treated the same as linkname,
		// but not for unnamed (aux) symbols.
		// The runtime linknames main.main.
		flag2 |= goobj.SymFlagLinkname
	}
	if s.ABIWrapper() {
		flag2 |= goobj.SymFlagABIWrapper
	}

	processorVersionInfo uint32
	isIntel              bool
)

// set by cmd/link on arm systems
// accessed using linkname by internal/runtime/atomic.
//
// goarm should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/creativeprojects/go-selfupdate
//
// Do not remove or change the type signature.

// The implementation of the predeclared function panic.
// The compiler emits calls to this function.
//
// gopanic should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - go.undefinedlabs.com/scopeagent
//   - github.com/goplus/igop
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//

// license that can be found in the LICENSE file.

package textproto

import (
	"bufio"
	"bytes"
	"errors"
	"fmt"
	"io"
	"math"
	"strconv"
	"strings"
	"sync"
	_ "unsafe" // for linkname
)

// TODO: This should be a distinguishable error (ErrMessageTooLarge)
// to allow mime/multipart to detect it.
var errMessageTooLarge = errors.New("message too large")

// platforms. Syscalls may have untyped arguments on the stack, so
// it's not safe to grow or scan the stack.
//
// cgocall should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/ebitengine/purego
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname cgocall
//go:nosplit

	}
	return c
}

// chanbuf(c, i) is pointer to the i'th slot in the buffer.
//
// chanbuf should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/fjl/memsize
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname chanbuf

	// you may have made a copy of a stackObjectRecord.
	// You must use the original pointer.
	res := mod.rodata + uintptr(r.gcdataoff)
	return (*byte)(unsafe.Pointer(res))
}

// This is exported as ABI0 via linkname so obj can call it.
//
//go:nosplit
//go:linkname morestackc
func morestackc() {
	throw("attempt to execute system stack code on user stack")
}