// Copyright 2010 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.

// Package loadpe implements a PE/COFF file reader.
package loadpe

import (
	"bytes"
	"cmd/internal/bio"
	"cmd/internal/objabi"
	"cmd/internal/sys"
	"cmd/link/internal/loader"
	"cmd/link/internal/sym"
	"debug/pe"
	"encoding/binary"
	"errors"
	"fmt"
	"io"
	"strings"

		if fno <= 0 {
			return ""
		}
		return t.string(t.binary.Uint32(t.filetab[4*fno:]))
	}
	// Go ≥ 1.16
	if fno < 0 { // 0 is valid for ≥ 1.16
		return ""
	}
	cuoff := f.cuOffset()
	if fnoff := t.binary.Uint32(t.cutab[(cuoff+uint32(fno))*4:]); fnoff != ^uint32(0) {
		return t.stringFrom(t.filetab, fnoff)
	}
	return ""
}

     (TFL_MulOp:$mul_out1
      (TFL_AddOp:$add_out1 $arg0,
       (TFL_MulOp:$mul_out2
        (TFL_PowOp:$pow_out $arg0, (Arith_ConstantOp F32ElementsAttr:$Cst_3)),
        (Arith_ConstantOp F32ElementsAttr:$Coeff), TFL_AF_None), TFL_AF_None),
      (Arith_ConstantOp F32ElementsAttr:$Cst_sqrt_2dPi), TFL_AF_None)),
    (Arith_ConstantOp F32ElementsAttr:$Cst_1), TFL_AF_None), TFL_AF_None),
  (TFL_GeluOp $arg0, ConstBoolAttrTrue),

type File struct {
	FileHeader
	OptionalHeader any // of type *OptionalHeader32 or *OptionalHeader64
	Sections       []*Section
	Symbols        []*Symbol    // COFF symbols with auxiliary symbol records removed
	COFFSymbols    []COFFSymbol // all COFF symbols (including auxiliary symbol records)
	StringTable    StringTable

	closer io.Closer
}

	n, p, q *bigmod.Modulus // moduli for CRT with Montgomery precomputed constants
}

// CRTValue contains the precomputed Chinese remainder theorem values.
type CRTValue struct {
	Exp   *big.Int // D mod (prime-1).
	Coeff *big.Int // R·Coeff ≡ 1 mod Prime.
	R     *big.Int // product of primes prior to this (inc p and q).
}

// Validate performs basic sanity checks on the key.

		if ok && seg.Addr != 0 && seg.Filesz != 0 && seg.Prot == RW && seg.Maxprot == RW {
			return seg.Addr, seg.Memsz
		}
	}
	return 0, 0
}

// xcoffExe is the XCOFF (AIX eXtended COFF) implementation of the exe interface.
type xcoffExe struct {
	f *xcoff.File
}

func (x *xcoffExe) ReadData(addr, size uint64) ([]byte, error) {
	for _, sect := range x.f.Sections {

	var v uint32

	rs := r.Xsym
	rt := r.Type

	if ldr.SymDynid(rs) < 0 {
		ldr.Errorf(s, "reloc %d (%s) to non-coff symbol %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymType(rs), ldr.SymType(rs))
		return false
	}

	out.Write32(uint32(sectoff))
	out.Write32(uint32(ldr.SymDynid(rs)))

	switch rt {

	var v uint32

	rs := r.Xsym
	rt := r.Type

	if ldr.SymDynid(rs) < 0 {
		ldr.Errorf(s, "reloc %d (%s) to non-coff symbol %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymType(rs), ldr.SymType(rs))
		return false
	}

	out.Write32(uint32(sectoff))
	out.Write32(uint32(ldr.SymDynid(rs)))

	switch rt {

func pereloc1(arch *sys.Arch, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym, r loader.ExtReloc, sectoff int64) bool {
	rs := r.Xsym
	rt := r.Type

	if ldr.SymDynid(rs) < 0 {
		ldr.Errorf(s, "reloc %d (%s) to non-coff symbol %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymType(rs), ldr.SymType(rs))
		return false
	}

	out.Write32(uint32(sectoff))
	out.Write32(uint32(ldr.SymDynid(rs)))

	var v uint32

	"cmd/link/internal/sym"
)

// This file handles all algorithms related to XCOFF files generation.
// Most of them are adaptations of the ones in  cmd/link/internal/pe.go
// as PE and XCOFF are based on COFF files.
// XCOFF files generated are 64 bits.

const (
	// Total amount of space to reserve at the start of the file
	// for File Header, Auxiliary Header, and Section Headers.
	// May waste some.