// void tstart(M *newm);
TEXT tstart<>(SB),NOSPLIT,$8-4
	MOVL	newm+0(FP), CX		// m
	MOVL	m_g0(CX), DX		// g

	// Layout new m scheduler stack on os stack.
	MOVL	SP, AX
	MOVL	AX, (g_stack+stack_hi)(DX)
	SUBL	$(64*1024), AX		// initial stack size (adjusted later)
	MOVL	AX, (g_stack+stack_lo)(DX)
	ADDL	$const_stackGuard, AX
	MOVL	AX, g_stackguard0(DX)
	MOVL	AX, g_stackguard1(DX)

	// Set up tls.
	LEAL	m_tls(CX), DI

)

type sigset C.sigset_t
type siginfo C.siginfo_t
type timespec C.struct_timespec
type timestruc C.struct_timestruc_t
type timeval C.struct_timeval
type itimerval C.struct_itimerval

type stackt C.stack_t
type sigcontext C.struct_sigcontext
type ucontext C.ucontext_t
type _Ctype_struct___extctx uint64 // ucontext use a pointer to this structure but it shouldn't be used
type jmpbuf C.struct___jmpbuf

	Message string
}

// Stack represents a stack. It's really a handle to a stack and it's trivially comparable.
//
// If two Stacks are equal then their Frames are guaranteed to be identical. If they are not
// equal, however, their Frames may still be equal.
type Stack struct {
	table *evTable
	id    stackID
}

// Frames is an iterator over the frames in a Stack.

	MOVB	runtime·iscgo(SB),R12
	CMPBNE	R12, $0, nosaveg

	MOVD	m_gsignal(R6), R12	// g.m.gsignal
	CMPBEQ	R12, $0, nosaveg

	CMPBEQ	g, R12, nosaveg
	MOVD	(g_stack+stack_lo)(R12), R12 // g.m.gsignal.stack.lo
	MOVD	g, (R12)

	BL	R9 // to vdso lookup

	MOVD	$0, (R12)

	JMP	finish

nosaveg:
	BL	R9					// to vdso lookup

finish:
	MOVD	0(R15), R3		// sec
	MOVD	8(R15), R5		// nsec

REGISTER_NO_GRADIENT_OP("QueueDequeueMany");
REGISTER_NO_GRADIENT_OP("QueueDequeueUpTo");
REGISTER_NO_GRADIENT_OP("QueueClose");
REGISTER_NO_GRADIENT_OP("QueueSize");
REGISTER_NO_GRADIENT_OP("Stack");
REGISTER_NO_GRADIENT_OP("StackPush");
REGISTER_NO_GRADIENT_OP("StackPop");
REGISTER_NO_GRADIENT_OP("StackClose");
REGISTER_NO_GRADIENT_OP("GetSessionHandle");
REGISTER_NO_GRADIENT_OP("GetSessionHandleV2");
REGISTER_NO_GRADIENT_OP("GetSessionTensor");

Andy Ly <******@****.***> 1576078406 -0800

A. Unique TensorFlower <******@****.***> 1690483910 -0700

apiVersion: release-notes/v2
kind: bug-fix
area: traffic-management
issue:
- 45557
releaseNotes:
- |

	BEQ	R25, nosaveg
	BEQ	g, R25, nosaveg

	MOVV	(g_stack+stack_lo)(R25), R25	// g.m.gsignal.stack.lo
	MOVV	g, (R25)

	JAL	(R20)

	MOVV	R0, (R25)
	JMP	finish

nosaveg:
	JAL	(R20)

finish:
	MOVV	0(R3), R7	// sec
	MOVV	8(R3), R5	// nsec

	MOVV	R23, R3	// restore SP
	// Restore vdsoPC, vdsoSP
	// We don't worry about being signaled between the two stores.

	RET

//func tstart_plan9(newm *m)
TEXT runtime·tstart_plan9(SB),NOSPLIT,$4-4
	MOVW	newm+0(FP), R1
	MOVW	m_g0(R1), g

	// Layout new m scheduler stack on os stack.
	MOVW	R13, R0
	MOVW	R0, g_stack+stack_hi(g)
	SUB	$(64*1024), R0
	MOVW	R0, (g_stack+stack_lo)(g)
	MOVW	R0, g_stackguard0(g)
	MOVW	R0, g_stackguard1(g)

	// Initialize procid from TOS struct.
	MOVW	_tos(SB), R0
	MOVW	48(R0), R0