Source file src/pkg/runtime/sys_wasm.go

     1	// Copyright 2018 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package runtime
     6	
     7	import (
     8		"runtime/internal/sys"
     9		"unsafe"
    10	)
    11	
    12	type m0Stack struct {
    13		_ [8192 * sys.StackGuardMultiplier]byte
    14	}
    15	
    16	var wasmStack m0Stack
    17	
    18	func wasmMove()
    19	
    20	func wasmZero()
    21	
    22	func wasmDiv()
    23	
    24	func wasmTruncS()
    25	func wasmTruncU()
    26	
    27	func wasmExit(code int32)
    28	
    29	// adjust Gobuf as it if executed a call to fn with context ctxt
    30	// and then did an immediate gosave.
    31	func gostartcall(buf *gobuf, fn, ctxt unsafe.Pointer) {
    32		sp := buf.sp
    33		if sys.RegSize > sys.PtrSize {
    34			sp -= sys.PtrSize
    35			*(*uintptr)(unsafe.Pointer(sp)) = 0
    36		}
    37		sp -= sys.PtrSize
    38		*(*uintptr)(unsafe.Pointer(sp)) = buf.pc
    39		buf.sp = sp
    40		buf.pc = uintptr(fn)
    41		buf.ctxt = ctxt
    42	}
    43	

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