// for declaring its arch-specific opcodes.
// Within this subspace, the first arch-specific opcode should be
// at offset A_ARCHSPECIFIC.
//
// Subspaces are aligned to a power of two so opcodes can be masked
// with AMask and used as compact array indices.
const (
	ABase386 = (1 + iota) << 11
	ABaseARM
	ABaseAMD64
	ABasePPC64
	ABaseARM64
	ABaseMIPS
	ABaseLoong64

	MOVV	(g_sched+gobuf_ctxt)(g), R19
	BEQ	R19, 2(PC)
	JAL	runtime·abort(SB)
	RET

// func asmcgocall(fn, arg unsafe.Pointer) int32
// Call fn(arg) on the scheduler stack,
// aligned appropriately for the gcc ABI.
// See cgocall.go for more details.
TEXT ·asmcgocall(SB),NOSPLIT,$0-20
	MOVV	fn+0(FP), R25
	MOVV	arg+8(FP), R4

	MOVV	R3, R12	// save original stack pointer
	MOVV	g, R13

			break
		}
	}
	return column
}

// rightPad pads the input with spaces on the right-hand-side to make it have
// at least width n. It treats tabs as enough spaces that lead to the next
// 8-aligned tab-stop.
func rightPad(s string, n int) string {
	var str strings.Builder

	// Convert tabs to spaces as we go so padding works regardless of what prefix
	// is placed before the result.
	column := 0

		// 2-byte and 1-byte aligned addresses, so the address of load/store must be aligned.
		// Also symbols with prefix of "go:string." are Go strings, which will go into
		// the symbol table, their addresses are not necessary aligned, rule this out.
		align := int64(1 << sz)
		if o.a1 == C_ADDR && p.From.Offset%align == 0 && !strings.HasPrefix(p.From.Sym.Name, "go:string.") ||

		print("runtime.preemptM: duplicatehandle failed; errno=", getlasterror(), "\n")
		throw("runtime.preemptM: duplicatehandle failed")
	}
	unlock(&mp.threadLock)

	// Prepare thread context buffer. This must be aligned to 16 bytes.
	var c *context
	var cbuf [unsafe.Sizeof(*c) + 15]byte
	c = (*context)(unsafe.Pointer((uintptr(unsafe.Pointer(&cbuf[15]))) &^ 15))
	c.contextflags = _CONTEXT_CONTROL

}

func TestAutoAligned64(t *testing.T) {
	var signed struct {
		_ uint32
		i Int64
	}
	if o := reflect.TypeOf(&signed).Elem().Field(1).Offset; o != 8 {
		t.Fatalf("Int64 offset = %d, want 8", o)
	}
	if p := reflect.ValueOf(&signed).Elem().Field(1).Addr().Pointer(); p&7 != 0 {
		t.Fatalf("Int64 pointer = %#x, want 8-aligned", p)
	}

	var unsigned struct {
		_ uint32
		i Uint64

GLOBL	·alignPcFnAddr(SB),RODATA,$8
DATA	·alignPcFnAddr(SB)/8,$·alignPc(SB)
`,
	"loong64": `
#include "textflag.h"

TEXT	·alignPc(SB),NOSPLIT, $0-0
	MOVV	$2, R4
	PCALIGN	$512
	MOVV	$3, R5
	RET

GLOBL	·alignPcFnAddr(SB),RODATA,$8
DATA	·alignPcFnAddr(SB)/8,$·alignPc(SB)
`,
}

// TestFuncAlign verifies that the address of a function can be aligned
// with a specific value on arm64 and loong64.

	// Peeks returns the word in *data, not as the return value.

	var buf [sizeofPtr]byte

	// Leading edge. PEEKTEXT/PEEKDATA don't require aligned
	// access (PEEKUSER warns that it might), but if we don't
	// align our reads, we might straddle an unmapped page
	// boundary and not get the bytes leading up to the page
	// boundary.
	n := 0
	if addr%sizeofPtr != 0 {

			n++
		}
		unlock(&mheap_.lock)
	})
	return n
}

func UserArenaClone[T any](s T) T {
	return arena_heapify(s).(T)
}

var AlignUp = alignUp

func BlockUntilEmptyFinalizerQueue(timeout int64) bool {
	return blockUntilEmptyFinalizerQueue(timeout)
}

func FrameStartLine(f *Frame) int {
	return f.startLine
}

	// stack is owned by this goroutine. It is not on a run queue.
	// It is assigned an M and a P (g.m and g.m.p are valid).
	_Grunning // 2

	// _Gsyscall means this goroutine is executing a system call.
	// It is not executing user code. The stack is owned by this
	// goroutine. It is not on a run queue. It is assigned an M.
	_Gsyscall // 3

	// _Gwaiting means this goroutine is blocked in the runtime.