// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"
#include "funcdata.h"

// bool Cas(int32 *val, int32 old, int32 new)
// Atomically:
//	if(*val == old){
//		*val = new;
//		return 1;
//	}else
//		return 0;
TEXT ·Cas(SB), NOSPLIT, $0-13
	MOVL	ptr+0(FP), BX
	MOVL	old+4(FP), AX
	MOVL	new+8(FP), CX

		// stackmap for this function. It is likely that we are looking
		// at the function prologue, assume so and hope for the best.
		pcdata = 0
	}
	stkmap := (*stackmap)(funcdata(f, abi.FUNCDATA_LocalsPointerMaps))

	var bv bitvector
	if stkmap != nil && stkmap.n > 0 {
		bv = stackmapdata(stkmap, pcdata)
	} else {
		bv.n = -1
	}

	// Dump main body of stack frame.

				fmt.Fprintf(w, "def %s %s\n", name, abi)
			}
		}
		return
	case "GLOBL", "PCDATA":
		// No text definitions or symbol references.
	case "DATA", "FUNCDATA":
		// For DATA, operands[0] is defined symbol.
		// For FUNCDATA, operands[0] is an immediate constant.
		// Remaining operands may have references.
		if len(operands) < 2 {
			return
		}
		operands = operands[1:]
	}

// returns pc.
func startPCForTrace(pc uintptr) uintptr {
	f := findfunc(pc)
	if !f.valid() {
		return pc // may happen for locked g in extra M since its pc is 0.
	}
	w := funcdata(f, abi.FUNCDATA_WrapInfo)
	if w == nil {
		return pc // not a wrapper
	}
	return f.datap.textAddr(*(*uint32)(w))

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build race

#include "go_asm.h"
#include "funcdata.h"
#include "textflag.h"

// The following thunks allow calling the gcc-compiled race runtime directly
// from Go code without going all the way through cgo.
// First, it's much faster (up to 50% speedup for real Go programs).

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build race

#include "go_asm.h"
#include "go_tls.h"
#include "funcdata.h"
#include "textflag.h"
#include "cgo/abi_amd64.h"

// The following thunks allow calling the gcc-compiled race runtime directly
// from Go code without going all the way through cgo.

	if flag&traverseAux == 0 {
		// NB: should it become necessary to walk aux sym reloc references
		// without walking the aux syms themselves, this can be changed.
		panic("should not be here")
	}
	for _, d := range pc.Funcdata {
		if d != nil {
			fn(fsym, d)
		}
	}
	usedFiles := make([]goobj.CUFileIndex, 0, len(pc.UsedFiles))
	for f := range pc.UsedFiles {
		usedFiles = append(usedFiles, f)
	}

	if up == abi.UnsafePointUnsafe {
		// Unsafe-point marked by compiler. This includes
		// atomic sequences (e.g., write barrier) and nosplit
		// functions (except at calls).
		return false, 0
	}
	if fd := funcdata(f, abi.FUNCDATA_LocalsPointerMaps); fd == nil || f.flag&abi.FuncFlagAsm != 0 {
		// This is assembly code. Don't assume it's well-formed.
		// TODO: Empirically we still need the fd == nil check. Why?
		//

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build race

#include "go_asm.h"
#include "funcdata.h"
#include "textflag.h"
#include "tls_arm64.h"
#include "cgo/abi_arm64.h"

// The following thunks allow calling the gcc-compiled race runtime directly
// from Go code without going all the way through cgo.

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build race

#include "go_asm.h"
#include "go_tls.h"
#include "funcdata.h"
#include "textflag.h"
#include "asm_ppc64x.h"
#include "cgo/abi_ppc64x.h"

// The following functions allow calling the clang-compiled race runtime directly
// from Go code without going all the way through cgo.