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hc
2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/arch/x86/tools/insn_sanity.c
....@@ -1,19 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * x86 decoder sanity test - based on test_get_insn.c
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
174  *
185  * Copyright (C) IBM Corporation, 2009
196  * Copyright (C) Hitachi, Ltd., 2011
....@@ -96,7 +83,7 @@
9683 }
9784 
9885 static void dump_stream(FILE *fp, const char *msg, unsigned long nr_iter,
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-			unsigned char *insn_buf, struct insn *insn)
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+			unsigned char *insn_buff, struct insn *insn)
10087 {
10188 	int i;
10289 
....@@ -109,7 +96,7 @@
10996 	/* Input a decoded instruction sequence directly */
11097 	fprintf(fp, " $ echo ");
11198 	for (i = 0; i < MAX_INSN_SIZE; i++)
112
-		fprintf(fp, " %02x", insn_buf[i]);
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+		fprintf(fp, " %02x", insn_buff[i]);
113100 	fprintf(fp, " | %s -i -\n", prog);
114101 
115102 	if (!input_file) {
....@@ -137,7 +124,7 @@
137124 }
138125 
139126 /* Read given instruction sequence from the input file */
140
-static int read_next_insn(unsigned char *insn_buf)
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+static int read_next_insn(unsigned char *insn_buff)
141128 {
142129 	char buf[256]  = "", *tmp;
143130 	int i;
....@@ -147,7 +134,7 @@
147134 		return 0;
148135 
149136 	for (i = 0; i < MAX_INSN_SIZE; i++) {
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-		insn_buf[i] = (unsigned char)strtoul(tmp, &tmp, 16);
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+		insn_buff[i] = (unsigned char)strtoul(tmp, &tmp, 16);
151138 		if (*tmp != ' ')
152139 			break;
153140 	}
....@@ -155,19 +142,19 @@
155142 	return i;
156143 }
157144 
158
-static int generate_insn(unsigned char *insn_buf)
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+static int generate_insn(unsigned char *insn_buff)
159146 {
160147 	int i;
161148 
162149 	if (input_file)
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-		return read_next_insn(insn_buf);
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+		return read_next_insn(insn_buff);
164151 
165152 	/* Fills buffer with random binary up to MAX_INSN_SIZE */
166153 	for (i = 0; i < MAX_INSN_SIZE - 1; i += 2)
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-		*(unsigned short *)(&insn_buf[i]) = random() & 0xffff;
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+		*(unsigned short *)(&insn_buff[i]) = random() & 0xffff;
168155 
169156 	while (i < MAX_INSN_SIZE)
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-		insn_buf[i++] = random() & 0xff;
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+		insn_buff[i++] = random() & 0xff;
171158 
172159 	return i;
173160 }
....@@ -239,31 +226,31 @@
239226 	int insns = 0;
240227 	int errors = 0;
241228 	unsigned long i;
242
-	unsigned char insn_buf[MAX_INSN_SIZE * 2];
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+	unsigned char insn_buff[MAX_INSN_SIZE * 2];
243230 
244231 	parse_args(argc, argv);
245232 
246233 	/* Prepare stop bytes with NOPs */
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-	memset(insn_buf + MAX_INSN_SIZE, INSN_NOP, MAX_INSN_SIZE);
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+	memset(insn_buff + MAX_INSN_SIZE, INSN_NOP, MAX_INSN_SIZE);
248235 
249236 	for (i = 0; i < iter_end; i++) {
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-		if (generate_insn(insn_buf) <= 0)
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+		if (generate_insn(insn_buff) <= 0)
251238 			break;
252239 
253240 		if (i < iter_start)	/* Skip to given iteration number */
254241 			continue;
255242 
256243 		/* Decode an instruction */
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-		insn_init(&insn, insn_buf, sizeof(insn_buf), x86_64);
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+		insn_init(&insn, insn_buff, sizeof(insn_buff), x86_64);
258245 		insn_get_length(&insn);
259246 
260247 		if (insn.next_byte <= insn.kaddr ||
261248 		    insn.kaddr + MAX_INSN_SIZE < insn.next_byte) {
262249 			/* Access out-of-range memory */
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-			dump_stream(stderr, "Error: Found an access violation", i, insn_buf, &insn);
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+			dump_stream(stderr, "Error: Found an access violation", i, insn_buff, &insn);
264251 			errors++;
265252 		} else if (verbose && !insn_complete(&insn))
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-			dump_stream(stdout, "Info: Found an undecodable input", i, insn_buf, &insn);
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+			dump_stream(stdout, "Info: Found an undecodable input", i, insn_buff, &insn);
267254 		else if (verbose >= 2)
268255 			dump_insn(stdout, &insn);
269256 		insns++;