Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * x86 decoder sanity test - based on test_get_insn.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) IBM Corporation, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (C) Hitachi, Ltd., 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <assert.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define unlikely(cond) (cond)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define ARRAY_SIZE(a)	(sizeof(a)/sizeof(a[0]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <asm/insn.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <inat.c>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <insn.c>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * Test of instruction analysis against tampering.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * Feed random binary to instruction decoder and ensure not to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  * access out-of-instruction-buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define DEFAULT_MAX_ITER	10000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define INSN_NOP 0x90
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) static const char	*prog;		/* Program name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) static int		verbose;	/* Verbosity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static int		x86_64;		/* x86-64 bit mode flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static unsigned int	seed;		/* Random seed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static unsigned long	iter_start;	/* Start of iteration number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) static unsigned long	iter_end = DEFAULT_MAX_ITER;	/* End of iteration number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static FILE		*input_file;	/* Input file name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) static void usage(const char *err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		fprintf(stderr, "%s: Error: %s\n\n", prog, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	fprintf(stderr, "Usage: %s [-y|-n|-v] [-s seed[,no]] [-m max] [-i input]\n", prog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	fprintf(stderr, "\t-y	64bit mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	fprintf(stderr, "\t-n	32bit mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	fprintf(stderr, "\t-v	Verbosity(-vv dumps any decoded result)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	fprintf(stderr, "\t-s	Give a random seed (and iteration number)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	fprintf(stderr, "\t-m	Give a maximum iteration number\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	fprintf(stderr, "\t-i	Give an input file with decoded binary\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static void dump_field(FILE *fp, const char *name, const char *indent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		       struct insn_field *field)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	fprintf(fp, "%s.%s = {\n", indent, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	fprintf(fp, "%s\t.value = %d, bytes[] = {%x, %x, %x, %x},\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		indent, field->value, field->bytes[0], field->bytes[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		field->bytes[2], field->bytes[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	fprintf(fp, "%s\t.got = %d, .nbytes = %d},\n", indent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		field->got, field->nbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static void dump_insn(FILE *fp, struct insn *insn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	fprintf(fp, "Instruction = {\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	dump_field(fp, "prefixes", "\t",	&insn->prefixes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	dump_field(fp, "rex_prefix", "\t",	&insn->rex_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	dump_field(fp, "vex_prefix", "\t",	&insn->vex_prefix);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	dump_field(fp, "opcode", "\t",		&insn->opcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	dump_field(fp, "modrm", "\t",		&insn->modrm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	dump_field(fp, "sib", "\t",		&insn->sib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	dump_field(fp, "displacement", "\t",	&insn->displacement);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	dump_field(fp, "immediate1", "\t",	&insn->immediate1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	dump_field(fp, "immediate2", "\t",	&insn->immediate2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	fprintf(fp, "\t.attr = %x, .opnd_bytes = %d, .addr_bytes = %d,\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		insn->attr, insn->opnd_bytes, insn->addr_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	fprintf(fp, "\t.length = %d, .x86_64 = %d, .kaddr = %p}\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		insn->length, insn->x86_64, insn->kaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) static void dump_stream(FILE *fp, const char *msg, unsigned long nr_iter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			unsigned char *insn_buff, struct insn *insn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	fprintf(fp, "%s:\n", msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	dump_insn(fp, insn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	fprintf(fp, "You can reproduce this with below command(s);\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	/* Input a decoded instruction sequence directly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	fprintf(fp, " $ echo ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	for (i = 0; i < MAX_INSN_SIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		fprintf(fp, " %02x", insn_buff[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	fprintf(fp, " | %s -i -\n", prog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (!input_file) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		fprintf(fp, "Or \n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		/* Give a seed and iteration number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		fprintf(fp, " $ %s -s 0x%x,%lu\n", prog, seed, nr_iter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static void init_random_seed(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	fd = open("/dev/urandom", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (read(fd, &seed, sizeof(seed)) != sizeof(seed))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	usage("Failed to open /dev/urandom");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /* Read given instruction sequence from the input file */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static int read_next_insn(unsigned char *insn_buff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	char buf[256]  = "", *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	tmp = fgets(buf, ARRAY_SIZE(buf), input_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (tmp == NULL || feof(input_file))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	for (i = 0; i < MAX_INSN_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		insn_buff[i] = (unsigned char)strtoul(tmp, &tmp, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		if (*tmp != ' ')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static int generate_insn(unsigned char *insn_buff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (input_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		return read_next_insn(insn_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	/* Fills buffer with random binary up to MAX_INSN_SIZE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	for (i = 0; i < MAX_INSN_SIZE - 1; i += 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		*(unsigned short *)(&insn_buff[i]) = random() & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	while (i < MAX_INSN_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		insn_buff[i++] = random() & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static void parse_args(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	int c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	char *tmp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	int set_seed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	prog = argv[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	while ((c = getopt(argc, argv, "ynvs:m:i:")) != -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		switch (c) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		case 'y':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 			x86_64 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		case 'n':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			x86_64 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		case 'v':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			verbose++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		case 'i':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			if (strcmp("-", optarg) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 				input_file = stdin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 			else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 				input_file = fopen(optarg, "r");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 			if (!input_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 				usage("Failed to open input file");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		case 's':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 			seed = (unsigned int)strtoul(optarg, &tmp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			if (*tmp == ',') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 				optarg = tmp + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 				iter_start = strtoul(optarg, &tmp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			if (*tmp != '\0' || tmp == optarg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 				usage("Failed to parse seed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 			set_seed = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		case 'm':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			iter_end = strtoul(optarg, &tmp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			if (*tmp != '\0' || tmp == optarg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 				usage("Failed to parse max_iter");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			usage(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	/* Check errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	if (iter_end < iter_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		usage("Max iteration number must be bigger than iter-num");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	if (set_seed && input_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		usage("Don't use input file (-i) with random seed (-s)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	/* Initialize random seed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	if (!input_file) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		if (!set_seed)	/* No seed is given */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			init_random_seed();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		srand(seed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int main(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	struct insn insn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	int insns = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	int errors = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	unsigned long i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	unsigned char insn_buff[MAX_INSN_SIZE * 2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	parse_args(argc, argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	/* Prepare stop bytes with NOPs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	memset(insn_buff + MAX_INSN_SIZE, INSN_NOP, MAX_INSN_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	for (i = 0; i < iter_end; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		if (generate_insn(insn_buff) <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		if (i < iter_start)	/* Skip to given iteration number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		/* Decode an instruction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		insn_init(&insn, insn_buff, sizeof(insn_buff), x86_64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		insn_get_length(&insn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		if (insn.next_byte <= insn.kaddr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		    insn.kaddr + MAX_INSN_SIZE < insn.next_byte) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			/* Access out-of-range memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 			dump_stream(stderr, "Error: Found an access violation", i, insn_buff, &insn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		} else if (verbose && !insn_complete(&insn))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 			dump_stream(stdout, "Info: Found an undecodable input", i, insn_buff, &insn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		else if (verbose >= 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 			dump_insn(stdout, &insn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		insns++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	fprintf((errors) ? stderr : stdout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		"%s: %s: decoded and checked %d %s instructions with %d errors (seed:0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		prog,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		(errors) ? "Failure" : "Success",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		insns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		(input_file) ? "given" : "random",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		errors,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		seed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	return errors ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }