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dumpbuf: Simplify rtems_print_buffer()

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This avoids an unnecessary use of the floating point unit.

Update #3076.
This commit is contained in:
Sebastian Huber
2017-07-18 14:13:48 +02:00
parent 533ac1126c
commit b682f4cb21
1 changed files with 17 additions and 11 deletions
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cpukit/libmisc/dumpbuf/dumpbuf.c
+17 -11
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@@ -70,6 +70,8 @@ void rtems_print_buffer(const unsigned char *buffer, const int length)
}
}
static char const hexlist[] = "0123456789abcdef";
/**
* @brief Print \p length bytes from \p buffer, both in hex and ASCII.
* @details Non-printable chars will appear as dots.
@@ -80,35 +82,39 @@ void rtems_print_buffer(const unsigned char *buffer, const int length)
static void Dump_Line(const unsigned char *buffer, const unsigned int length)
{
unsigned int i;
static char line_buffer[ROW_LENGTH] = "";
size_t tmp_len;
/* Output the hex value of each byte. */
for (i = 0; i < length; ++i) {
snprintf(&line_buffer[i * HEX_FMT_LENGTH], HEX_FMT_LENGTH + 1,
"%02x ", buffer[i]);
unsigned char c = buffer[i];
rtems_putc(hexlist[(c >> 4) & 0xf]);
rtems_putc(hexlist[0xf]);
rtems_putc(' ');
}
/* Fill the remaining space with whitespace (if necessary). */
for (; i < BYTES_PER_ROW; ++i) {
strncat(line_buffer, " ", HEX_FMT_LENGTH);
rtems_putc(' ');
rtems_putc(' ');
rtems_putc(' ');
}
/* Append a bar. */
strncat(line_buffer, "|", 1);
tmp_len = strnlen(line_buffer, ROW_LENGTH);
rtems_putc('|');
/* Now output the ASCII glyphs of printable chars. */
for (i = 0; i < length; ++i) {
snprintf(&line_buffer[tmp_len + i], ASCII_FMT_LENGTH + 1,
"%c", isprint(buffer[i]) ? buffer[i] : '.');
unsigned char c = buffer[i];
rtems_putc(isprint(c) ? c : '.');
}
/* Fill the remaining space with whitespace (if necessary). */
for(; i < BYTES_PER_ROW; i++) {
strncat(line_buffer, " ", ASCII_FMT_LENGTH);
rtems_putc(' ');
}
/* Append another bar and print the resulting string. */
printk("%s|\n", line_buffer);
rtems_putc('|');
rtems_putc('\n');
}