case ctxt.IsPPC64():
		return n * 16 // Trampolines in PPC64 are 4 instructions.
	case ctxt.IsRISCV64():
		return n * 8 // Trampolines in RISCV64 are 2 instructions.
	}
	panic("unreachable")
}

// Detect too-far jumps in function s, and add trampolines if necessary.
// ARM, PPC64, PPC64LE and RISCV64 support trampoline insertion for internal
// and external linking. On PPC64 and PPC64LE the text sections might be split

// Copyright 2014 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 linux && (ppc64 || ppc64le)

.file "gcc_linux_ppc64x.S"

// Define a frame which has no argument space, but is compatible with
// a call into a Go ABI. We allocate 32B to match FIXED_FRAME with
// similar semantics, except we store the backchain pointer, not the

// Copyright 2016 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 (darwin || dragonfly || freebsd || (linux && !ppc64 && !ppc64le) || netbsd || openbsd || solaris) && gc

package unix

import "syscall"

func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)

	// frame's saved LR.
	badLR2(0)
}

//go:noinline
func badLR2(arg int) {
	// Smash the return PC or saved LR.
	lrOff := unsafe.Sizeof(uintptr(0))
	if runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" {
		lrOff = 32 // FIXED_FRAME or sys.MinFrameSize
	}
	lrPtr := (*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&arg)) - lrOff))
	*lrPtr = 0xbad

// 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 amd64 || arm64 || loong64 || mips64 || mips64le || ppc64 || ppc64le || riscv64 || s390x || wasm

package atomic

// LoadAcquire is a partially unsynchronized version
// of Load that relaxes ordering constraints. Other threads
// may observe operations that precede this operation to

// SSE instructions on x86 machines, and those are classified as
// floating point instructions, which are illegal in a note handler.

//go:build !386 && (!amd64 || plan9) && !s390x && !arm && !arm64 && !loong64 && !ppc64 && !ppc64le && !mips && !mipsle && !mips64 && !mips64le && !riscv64 && !wasm

package bytealg

func IndexByte(b []byte, c byte) int {
	for i, x := range b {
		if x == c {
			return i
		}
	}
	return -1
}

// Tag bits that don't fit in the result are discarded.
func taggedPointerPack(ptr unsafe.Pointer, tag uintptr) taggedPointer {
	if GOOS == "aix" {
		if GOARCH != "ppc64" {
			throw("check this code for aix on non-ppc64")
		}
		return taggedPointer(uint64(uintptr(ptr))<<(64-aixAddrBits) | uint64(tag&(1<<aixTagBits-1)))
	}
	if GOARCH == "riscv64" {

// Copyright 2014 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 ppc64 || ppc64le

#include <pthread.h>
#include <string.h>
#include <signal.h>
#include "libcgo.h"
#include "libcgo_unix.h"

static void *threadentry(void*);

void (*x_cgo_inittls)(void **tlsg, void **tlsbase);
static void (*setg_gcc)(void*);

void

	// supported and enabled by default.
	// regabiAlwaysOn is set to true on platforms where register ABI is
	// always on.
	var regabiSupported, regabiAlwaysOn bool
	switch goarch {
	case "amd64", "arm64", "loong64", "ppc64le", "ppc64", "riscv64":
		regabiAlwaysOn = true
		regabiSupported = true
	}

	baseline := goexperiment.Flags{
		RegabiWrappers:   regabiSupported,
		RegabiArgs:       regabiSupported,
		CoverageRedesign: true,
	}

	// (AtomicLoadPtr needs to be implemented in cmd/compile/internal/ssa/_gen/ARCH.rules.)
	switch goarch {
	case "amd64", "arm64", "loong64", "mips", "mipsle", "mips64", "mips64le", "ppc64", "ppc64le", "riscv64", "s390x":
		return true
	default:
		return false
	}
}

type TypeAssert struct {
	Cache   *TypeAssertCache
	Inter   *InterfaceType
	CanFail bool
}
type TypeAssertCache struct {