diff options
| author | Simon Glass <sjg@chromium.org> | 2021-05-08 07:00:05 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-06-08 11:39:09 -0400 |
| commit | 0cceb99ac59b1d383488ea3ce6511ffc01da5332 (patch) | |
| tree | 67dc9eb75f3aa6a469eb4c57bfd432139a7958aa /include/display_options.h | |
| parent | 735dd6ef89ebd3e05c1dfaef06aca61046503c63 (diff) | |
| download | u-boot-0cceb99ac59b1d383488ea3ce6511ffc01da5332.tar.gz | |
display_options: Split print_buffer() into two functions
At present print_buffer() outputs a hex dump but it is not possible to
place this dump in a string. Refactor it into a top-level function which
does the printing and a utility function that dumps a line into a string.
This makes the code more generally useful.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/display_options.h')
| -rw-r--r-- | include/display_options.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/display_options.h b/include/display_options.h index 049688e39e..43810cbe22 100644 --- a/include/display_options.h +++ b/include/display_options.h @@ -47,6 +47,31 @@ void print_freq(uint64_t freq, const char *suffix); int print_buffer(ulong addr, const void *data, uint width, uint count, uint linelen); +/* + * Maximum length of an output line is when width == 1 + * 9 for address, + * a space, two hex digits and an ASCII character for each byte + * 2 spaces between the hex and ASCII + * \0 terminator + */ +#define HEXDUMP_MAX_BUF_LENGTH(bytes) (9 + (bytes) * 4 + 3) + +/** + * hexdump_line() - Print out a single line of a hex dump + * + * @addr: Starting address to display at start of line + * @data: pointer to data buffer + * @width: data value width. May be 1, 2, or 4. + * @count: number of values to display + * @linelen: Number of values to print per line; specify 0 for default length + * @out: Output buffer to hold the dump + * @size: Size of output buffer in bytes + * @return number of bytes processed, if OK, -ENOSPC if buffer too small + * + */ +int hexdump_line(ulong addr, const void *data, uint width, uint count, + uint linelen, char *out, int size); + /** * display_options() - display the version string / build tag * |