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util/hexdump: Remove ascii parameter from qemu_hexdump_line

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Split out asciidump_line as a separate function, local to hexdump.c,
for use by qemu_hexdump.  Use "%-*s" to generate the alignment
between the hex and the ascii, rather than explicit spaces.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240412073346.458116-3-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Richard Henderson 2024-04-12 00:33:21 -07:00 committed by Philippe Mathieu-Daudé
parent 5837a76cd2
commit 13dfa93300
3 changed files with 34 additions and 27 deletions
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2
hw/virtio/vhost-vdpa.c
View file

@ -949,7 +949,7 @@ static void vhost_vdpa_dump_config(struct vhost_dev *dev, const uint8_t *config,
for (b = 0; b < config_len; b += 16) {
len = config_len - b;
qemu_hexdump_line(line, config + b, len, false);
qemu_hexdump_line(line, config + b, len);
trace_vhost_vdpa_dump_config(dev, b, line);
}
}

3
include/qemu/cutils.h
View file

@ -287,8 +287,7 @@ int parse_debug_env(const char *name, int max, int initial);
*/
#define QEMU_HEXDUMP_LINE_BYTES 16 /* Number of bytes to dump */
#define QEMU_HEXDUMP_LINE_LEN 75 /* Number of characters in line */
void qemu_hexdump_line(char *line, const void *bufptr,
unsigned int len, bool ascii);
void qemu_hexdump_line(char *line, const void *bufptr, size_t len);
/*
* Hexdump a buffer to a file. An optional string prefix is added to every line

56
util/hexdump.c
View file

@ -16,49 +16,57 @@
#include "qemu/osdep.h"
#include "qemu/cutils.h"
void qemu_hexdump_line(char *line, const void *bufptr,
unsigned int len, bool ascii)
void qemu_hexdump_line(char *line, const void *bufptr, size_t len)
{
const char *buf = bufptr;
int i, c;
int i;
if (len > QEMU_HEXDUMP_LINE_BYTES) {
len = QEMU_HEXDUMP_LINE_BYTES;
}
for (i = 0; i < QEMU_HEXDUMP_LINE_BYTES; i++) {
for (i = 0; i < len; i++) {
if (i != 0 && (i % 4) == 0) {
*line++ = ' ';
}
if (i < len) {
line += sprintf(line, " %02x", (unsigned char)buf[i]);
} else {
line += sprintf(line, " ");
}
}
if (ascii) {
*line++ = ' ';
for (i = 0; i < len; i++) {
c = buf[i];
if (c < ' ' || c > '~') {
c = '.';
}
*line++ = c;
}
line += sprintf(line, " %02x", (unsigned char)buf[i]);
}
*line = '\0';
}
static void asciidump_line(char *line, const void *bufptr, size_t len)
{
const char *buf = bufptr;
for (size_t i = 0; i < len; i++) {
char c = buf[i];
if (c < ' ' || c > '~') {
c = '.';
}
*line++ = c;
}
*line = '\0';
}
#define QEMU_HEXDUMP_LINE_WIDTH \
(QEMU_HEXDUMP_LINE_BYTES * 2 + QEMU_HEXDUMP_LINE_BYTES / 4)
void qemu_hexdump(FILE *fp, const char *prefix,
const void *bufptr, size_t size)
{
unsigned int b, len;
char line[QEMU_HEXDUMP_LINE_LEN];
char ascii[QEMU_HEXDUMP_LINE_BYTES + 1];
size_t b, len;
for (b = 0; b < size; b += QEMU_HEXDUMP_LINE_BYTES) {
len = size - b;
qemu_hexdump_line(line, bufptr + b, len, true);
fprintf(fp, "%s: %04x: %s\n", prefix, b, line);
for (b = 0; b < size; b += len) {
len = MIN(size - b, QEMU_HEXDUMP_LINE_BYTES);
qemu_hexdump_line(line, bufptr + b, len);
asciidump_line(ascii, bufptr + b, len);
fprintf(fp, "%s: %04zx: %-*s %s\n",
prefix, b, QEMU_HEXDUMP_LINE_WIDTH, line, ascii);
}
}