#include "textflag.h"

#define CLOCK_REALTIME	$0
#define	CLOCK_MONOTONIC	$3

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$32
	// R3 points to the m.
	// We are already on m's g0 stack.

	// Go relies on R0 being $0.
	XOR	R0, R0

#include "cgo/abi_arm64.h"

#define CLOCK_REALTIME	$0
#define	CLOCK_MONOTONIC	$3

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$144
	// R0 points to the m.
	// We are already on m's g0 stack.

	// Save callee-save registers.
	SAVE_R19_TO_R28(8)

#include "textflag.h"

#define CLOCK_REALTIME	$0
#define	CLOCK_MONOTONIC	$3

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$200
	// X10 points to the m.
	// We are already on m's g0 stack.

	// Save callee-save registers (X8, X9, X18..X27, F8, F9, F18..F27)

		// including C code called via cgo, calls a
		// TSAN-intercepted function such as malloc.
		//
		// We check this condition last as g0.stack.lo
		// may be not very accurate (see mstart).
		st := stackt{ss_size: mp.g0.stack.hi - mp.g0.stack.lo}
		setSignalstackSP(&st, mp.g0.stack.lo)
		setGsignalStack(&st, gsigStack)
		return true
	}

	// Nothing to do, pthread already set thread-local storage up.
	RET

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$0
	// DI points to the m.
	// We are already on m's g0 stack.

	// Transition from C ABI to Go ABI.
	PUSH_REGS_HOST_TO_ABI0()

	BL	notok<>(SB)
#endif
	RET

// Thread related functions

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$160
	// R0 points to the m.
	// We are already on m's g0 stack.

	// Save callee-save registers.
	SAVE_R19_TO_R28(8)

	}

	// Set up m.g0.sched as a label returning to just
	// after the mstart1 call in mstart0 above, for use by goexit0 and mcall.
	// We're never coming back to mstart1 after we call schedule,
	// so other calls can reuse the current frame.
	// And goexit0 does a gogo that needs to return from mstart1
	// and let mstart0 exit the thread.
	gp.sched.g = guintptr(unsafe.Pointer(gp))
	gp.sched.pc = getcallerpc()

	MOVL	$-1, AX
noerr:
	MOVL	AX, 12(BX)
	MOVL	DX, 16(BX)
	RET

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT|NOFRAME,$0
	// DI points to the m.
	// We are already on m's g0 stack.

	// Transition from C ABI to Go ABI.

#define NOOP	MOVW    R0, R0
#define	INVOKE_SYSCALL	\
	SWI	$0;	\
	NOOP;		\
	NOOP

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$0
	// R0 points to the m.
	// We are already on m's g0 stack.

	// Save callee-save registers.
	MOVM.DB.W [R4-R11], (R13)

	// Nothing to do, pthread already set thread-local storage up.
	RET

// mstart_stub is the first function executed on a new thread started by pthread_create.
// It just does some low-level setup and then calls mstart.
// Note: called with the C calling convention.
TEXT runtime·mstart_stub(SB),NOSPLIT,$28
	NOP	SP	// tell vet SP changed - stop checking offsets

	// We are already on m's g0 stack.

	// Save callee-save registers.