// SPDX-FileCopyrightText: 2008 Anant Narayanan
// SPDX-License-Identifier: LGPL-3.0-only

#ifndef P9BIN_H
#define P9BIN_H

#include <rz_util.h>

/*
 * Binary loader for Plan 9's a.out executable format
 *
 * Copyright (C) 2008 Anant Narayanan
 */
struct plan9_exec {
	unsigned long magic; /* magic number */
	unsigned long text; /* size of text segment */
	unsigned long data; /* size of initialized data */
	unsigned long bss; /* size of uninitialized data */
	unsigned long syms; /* size of symbol table */
	unsigned long entry; /* entry point */
	unsigned long spsz; /* size of pc/sp offset table */
	unsigned long pcsz; /* size of pc/line number table */
};

#define HDR_MAGIC 0x00008000 /* header expansion */

#define _MAGIC(f, b) ((f) | ((((4 * (b)) + 0) * (b)) + 7))
#define A_MAGIC      _MAGIC(0, 8) /* 68020 */
#define I_MAGIC      _MAGIC(0, 11) /* intel 386 */
#define J_MAGIC      _MAGIC(0, 12) /* intel 960 (retired) */
#define K_MAGIC      _MAGIC(0, 13) /* sparc */
#define V_MAGIC      _MAGIC(0, 16) /* mips 3000 BE */
#define X_MAGIC      _MAGIC(0, 17) /* att dsp 3210 (retired) */
#define M_MAGIC      _MAGIC(0, 18) /* mips 4000 BE */
#define D_MAGIC      _MAGIC(0, 19) /* amd 29000 (retired) */
#define E_MAGIC      _MAGIC(0, 20) /* arm */
#define Q_MAGIC      _MAGIC(0, 21) /* powerpc */
#define N_MAGIC      _MAGIC(0, 22) /* mips 4000 LE */
#define L_MAGIC      _MAGIC(0, 23) /* dec alpha */
#define P_MAGIC      _MAGIC(0, 24) /* mips 3000 LE */
#define U_MAGIC      _MAGIC(0, 25) /* sparc64 */
#define S_MAGIC      _MAGIC(HDR_MAGIC, 26) /* amd64 */
#define T_MAGIC      _MAGIC(HDR_MAGIC, 27) /* powerpc64 */

#define TOS_SIZE 14 /* Size of Top of Stack: 56 / 4 */
#define HDR_SIZE 0x20
#define STR_ADDR 0x1000 /* Start Address */
#define TXT_ADDR HDR_SIZE + ex.text /* TEXT Address */
#define DAT_ADDR STR_ADDR + PAGE_ALIGN(TXT_ADDR) /* DATA&BSS Address */

/*---*/

#define p9bin_open(x)  fopen(x, "r")
#define p9bin_close(x) fclose(x)

/* Reads four bytes from b. */
int rz_bin_p9_get_arch(RzBuffer *b, int *bits, int *big_endian);

#endif
