package runtime

import (
	"internal/goarch"
	"unsafe"
)

type sigctxt struct {
	info *siginfo
	ctxt unsafe.Pointer
}

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) regs() *sigcontext {
	return (*sigcontext)(c.ctxt)
}

func (c *sigctxt) r0() uint64  { return c.regs().sc_reg[0] }
func (c *sigctxt) r1() uint64  { return c.regs().sc_reg[1] }

// reporting).
func (check *Checker) newAliasInstance(pos syntax.Pos, orig *Alias, targs []Type, ctxt *Context) *Alias {
	assert(len(targs) > 0)
	obj := NewTypeName(pos, orig.obj.pkg, orig.obj.name, nil)
	rhs := check.subst(pos, orig.fromRHS, makeSubstMap(orig.TypeParams().list(), targs), nil, ctxt)
	res := check.newAlias(obj, rhs)
	res.orig = orig
	res.tparams = orig.tparams
	res.targs = newTypeList(targs)

// reporting).
func (check *Checker) newAliasInstance(pos token.Pos, orig *Alias, targs []Type, ctxt *Context) *Alias {
	assert(len(targs) > 0)
	obj := NewTypeName(pos, orig.obj.pkg, orig.obj.name, nil)
	rhs := check.subst(pos, orig.fromRHS, makeSubstMap(orig.TypeParams().list(), targs), nil, ctxt)
	res := check.newAlias(obj, rhs)
	res.orig = orig
	res.tparams = orig.tparams
	res.targs = newTypeList(targs)

	MOVW	R2, (R1)
	RET

TEXT crosscall2_trampoline<>(SB),NOSPLIT,$0-0
	JMP	crosscall2(SB)

// Called by C code generated by cmd/cgo.
// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
// Saves C callee-saved registers and calls cgocallback with three arguments.
// fn is the PC of a func(a unsafe.Pointer) function.
TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0

}

// machoRewriteUuid copies over the contents of the Macho executable
// exef into the output file outexe, and in the process updates the
// LC_UUID command to a new value recomputed from the Go build id.
func machoRewriteUuid(ctxt *Link, exef *os.File, exem *macho.File, outexe string) error {
	outf, err := os.OpenFile(outexe, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
	if err != nil {
		return err
	}
	defer outf.Close()

	// Copy over the file.

#include <sched.h>
#include <dlfcn.h>

static void die(const char* msg) {
	perror(msg);
	exit(EXIT_FAILURE);
}

static volatile sig_atomic_t sigioSeen;

static void ioHandler(int signo, siginfo_t* info, void* ctxt) {
	sigioSeen = 1;
}

int main(int argc, char** argv) {
	int verbose;
	struct sigaction sa;
	void* handle;
	void (*catchSIGIO)(void);
	void (*resetSIGIO)(void);
	void (*awaitSIGIO)();

		// and assign globals[i].location = uintptr(unsafe.Pointer(&asanL[i]))
		asanLi := ir.NewIndexExpr(base.Pos, asanlocation, ir.NewInt(base.Pos, int64(i)))
		filename := ir.NewString(base.Pos, base.Ctxt.PosTable.Pos(n.Pos()).Filename()+"\000")
		init.Append(typecheck.Stmt(ir.NewAssignStmt(base.Pos, asanFilename, filename)))
		c = tconv(typecheck.NodAddr(asanFilename), types.Types[types.TUNSAFEPTR])

	if f.RegAlloc != nil {
		for i := range live {
			live[i] = true
		}
		return
	}

	// Record all the inline indexes we need
	var liveInlIdx map[int]bool
	pt := f.Config.ctxt.PosTable
	for _, b := range f.Blocks {
		for _, v := range b.Values {
			i := pt.Pos(v.Pos).Base().InliningIndex()
			if i < 0 {
				continue
			}
			if liveInlIdx == nil {
				liveInlIdx = map[int]bool{}
			}

    context(R|Ctx1|, R|Ctx2|)
    class Test : R|kotlin/Any|
    R|Test|
ContainingClass[name: <this>; isMutated: false; displayText: this@Test]
    context(R|Ctx1|, R|Ctx2|)
    class Test : R|kotlin/Any|
    R|Test|
ContextReceiver[name: Ctx3; isMutated: false; displayText: this@Ctx3]
    context(R|Ctx3|, R|Ctx4|)
    fun foo(): R|kotlin/Unit|
    R|Ctx3|

              $context_receiver_0: GET_FIELD 'FIELD FIELD_FOR_CLASS_CONTEXT_RECEIVER name:contextReceiverField0 type:<root>.Ctx1 visibility:private [final] declared in <root>.Test' type=<root>.Ctx1 origin=null