"asmdecl":          true,
	"assign":           true,
	"atomic":           true,
	"bool":             true,
	"bools":            true,
	"buildtag":         true,
	"buildtags":        true,
	"cgocall":          true,
	"composites":       true,
	"copylocks":        true,
	"defers":           true,
	"directive":        true,
	"errorsas":         true,
	"framepointer":     true,
	"httpresponse":     true,

 * honored for all pthreads (by default), and this in turn with cgo
 * ensures that all Go threads launched with cgo are kept in sync for
 * these function calls.
 */

// argset_t matches runtime/cgocall.go:argset.
typedef struct {
	uintptr_t* args;
	uintptr_t retval;
} argset_t;

// libc backed posix-compliant syscalls.

#define SET_RETVAL(fn) \
  uintptr_t ret = (uintptr_t) fn ; \

	atomic           check for common mistakes using the sync/atomic package
	bools            check for common mistakes involving boolean operators
	buildtag         check //go:build and // +build directives
	cgocall          detect some violations of the cgo pointer passing rules
	composites       check for unkeyed composite literals
	copylocks        check for locks erroneously passed by value

	}

	// The cgocall parameters are stored in m instead of in
	// the stack because the stack can move during fn if it
	// calls back into Go.
	c := &getg().m.winsyscall
	c.fn = fn
	c.n = uintptr(len(args))
	if c.n != 0 {
		c.args = uintptr(noescape(unsafe.Pointer(&args[0])))
	}
	cgocall(asmstdcallAddr, unsafe.Pointer(c))
	// cgocall may reschedule us on to a different M,

golang.org/x/tools/go/analysis/passes/assign
golang.org/x/tools/go/analysis/passes/atomic
golang.org/x/tools/go/analysis/passes/bools
golang.org/x/tools/go/analysis/passes/buildtag
golang.org/x/tools/go/analysis/passes/cgocall
golang.org/x/tools/go/analysis/passes/composite
golang.org/x/tools/go/analysis/passes/copylock
golang.org/x/tools/go/analysis/passes/ctrlflow
golang.org/x/tools/go/analysis/passes/defers

	traceback     uint8
	ncgocall      uint64        // number of cgo calls in total
	ncgo          int32         // number of cgo calls currently in progress
	cgoCallersUse atomic.Uint32 // if non-zero, cgoCallers in use temporarily
	cgoCallers    *cgoCallers   // cgo traceback if crashing in cgo call
	park          note
	alllink       *m // on allm
	schedlink     muintptr
	lockedg       guintptr

	TESTQ	CX, CX
	JZ	sigtramp        // g.m.curg == nil
	MOVQ	g_syscallsp(CX), CX
	TESTQ	CX, CX
	JZ	sigtramp        // g.m.curg.syscallsp == 0
	MOVQ	m_cgoCallers(AX), R8
	TESTQ	R8, R8
	JZ	sigtramp        // g.m.cgoCallers == nil
	MOVL	m_cgoCallersUse(AX), CX
	TESTL	CX, CX
	JNZ	sigtramp	// g.m.cgoCallersUse != 0

	// Jump to a function in runtime/cgo.
	// That function, written in C, will call the user's traceback

// from Go code without going all the way through cgo.
// First, it's much faster (up to 50% speedup for real Go programs).
// Second, it eliminates race-related special cases from cgocall and scheduler.
// Third, in long-term it will allow to remove cyclic runtime/race dependency on cmd/go.

// A brief recap of the s390x C calling convention.
// Arguments are passed in R2...R6, the rest is on stack.

		// cgoCallers.  We are running in a signal handler
		// with all signals blocked, so we don't have to worry
		// about any other code interrupting us.
		if mp.cgoCallersUse.Load() == 0 && mp.cgoCallers != nil && mp.cgoCallers[0] != 0 {
			for cgoOff < len(mp.cgoCallers) && mp.cgoCallers[cgoOff] != 0 {
				cgoOff++
			}
			n += copy(stk[:], mp.cgoCallers[:cgoOff])
			mp.cgoCallers[0] = 0
		}

	MOVV	fn+0(FP), R25
	MOVV	arg+8(FP), R4
	JAL	(R25)
	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	R29, R3	// save original stack pointer
	MOVV	g, R2