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arm: smh: Add some functions for working with the host console

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This adds three wrappers around the semihosting commands for reading and
writing to the host console. We use the more standard getc/putc/puts
names instead of readc/writec/write0 for familiarity.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
This commit is contained in:
Sean Anderson 2022-03-22 16:59:23 -04:00 • committed by Tom Rini
parent dcc4f9623e
commit 3ea744e873
2 changed files with 37 additions and 0 deletions
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19
include/semihosting.h
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@ -86,4 +86,23 @@ long smh_flen(long fd);
*/
long smh_seek(long fd, long pos);
/**
* smh_getc() - Read a character from stdin
*
* Return: The character read, or a negative error on failure
*/
int smh_getc(void);
/**
* smh_putc() - Print a character on stdout
* @ch: The character to print
*/
void smh_putc(char ch);
/**
* smh_write0() - Print a nul-terminated string on stdout
* @s: The string to print
*/
void smh_puts(const char *s);
#endif /* _SEMIHOSTING_H */