uintptr_t mcall_console_putchar(uint8_t ch)
{
do_putchar(ch);
return 0;
}
/*
* Print SysV echo(1) style escape string
* Halts processing string if a \c escape is encountered.
*/
static void
conv_escape_str(char *str, void (*do_putchar)(int))
{
int value;
int ch;
char c;
while ((ch = *str++) != '\0') {
if (ch != '\\') {
do_putchar(ch);
continue;
}
ch = *str++;
if (ch == 'c') {
/* \c as in SYSV echo - abort all processing.... */
rval |= 0x100;
break;
}
/*
* %b string octal constants are not like those in C.
* They start with a \0, and are followed by 0, 1, 2,
* or 3 octal digits.
*/
if (ch == '0') {
int octnum = 0, i;
for (i = 0; i < 3; i++) {
if (!isdigit((unsigned char)*str) || *str > '7')
break;
octnum = (octnum << 3) | (*str++ - '0');
}
do_putchar(octnum);
continue;
}
/* \[M][^|-]C as defined by vis(3) */
if (ch == 'M' && *str == '-') {
do_putchar(0200 | str[1]);
str += 2;
continue;
}
if (ch == 'M' && *str == '^') {
str++;
value = 0200;
ch = '^';
} else
value = 0;
if (ch == '^') {
ch = *str++;
if (ch == '?')
value |= 0177;
else
value |= ch & 037;
do_putchar(value);
continue;
}
/* Finally test for sequences valid in the format string */
str = conv_escape(str - 1, &c);
do_putchar(c);
}
}
static void ABI_X86 send_to_console(unsigned char b)
{
do_putchar(b);
}
static void wrap_putchar(unsigned char byte, void *data)
{
do_putchar(byte);
}
