static char *pointer(char *str, char *end, const char **fmt_ptr,
const void *arg, int field_width, int precision,
int flags)
{
const char *fmt = *fmt_ptr, *s;
/* Custom %p suffixes. See XEN_ROOT/docs/misc/printk-formats.txt */
switch ( fmt[1] )
{
case 's': /* Symbol name with offset and size (iff offset != 0) */
case 'S': /* Symbol name unconditionally with offset and size */
{
unsigned long sym_size, sym_offset;
char namebuf[KSYM_NAME_LEN+1];
/* Advance parents fmt string, as we have consumed 's' or 'S' */
++*fmt_ptr;
s = symbols_lookup((unsigned long)arg, &sym_size, &sym_offset, namebuf);
/* If the symbol is not found, fall back to printing the address */
if ( !s )
break;
/* Print symbol name */
str = string(str, end, s, -1, -1, 0);
if ( fmt[1] == 'S' || sym_offset != 0 )
{
/* Print '+<offset>/<len>' */
str = number(str, end, sym_offset, 16, -1, -1, SPECIAL|SIGN|PLUS);
if ( str <= end )
*str = '/';
++str;
str = number(str, end, sym_size, 16, -1, -1, SPECIAL);
}
return str;
}
}
if ( field_width == -1 )
{
field_width = 2 * sizeof(void *);
flags |= ZEROPAD;
}
return number(str, end, (unsigned long)arg,
16, field_width, precision, flags);
}
/* Replace "%s" in format with address, or returns -errno. */
void __print_symbol(const char *fmt, unsigned long address)
{
const char *name;
unsigned long offset, size, flags;
static DEFINE_SPINLOCK(lock);
static char namebuf[KSYM_NAME_LEN+1];
#define BUFFER_SIZE sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN + \
2*(BITS_PER_LONG*3/10) + 1
static char buffer[BUFFER_SIZE];
spin_lock_irqsave(&lock, flags);
name = symbols_lookup(address, &size, &offset, namebuf);
if (!name)
snprintf(buffer, BUFFER_SIZE, "???");
else
snprintf(buffer, BUFFER_SIZE, "%s+%#lx/%#lx", name, offset, size);
printk(fmt, buffer);
spin_unlock_irqrestore(&lock, flags);
}
static char *pointer(char *str, char *end, const char **fmt_ptr,
const void *arg, int field_width, int precision,
int flags)
{
const char *fmt = *fmt_ptr, *s;
/* Custom %p suffixes. See XEN_ROOT/docs/misc/printk-formats.txt */
switch ( fmt[1] )
{
case 'h': /* Raw buffer as hex string. */
{
const uint8_t *hex_buffer = arg;
unsigned int i;
/* Consumed 'h' from the format string. */
++*fmt_ptr;
/* Bound user count from %* to between 0 and 64 bytes. */
if ( field_width <= 0 )
return str;
if ( field_width > 64 )
field_width = 64;
for ( i = 0; ; )
{
/* Each byte: 2 chars, 0-padded, base 16, no hex prefix. */
str = number(str, end, hex_buffer[i], 16, 2, -1, ZEROPAD);
if ( ++i == field_width )
return str;
if ( str < end )
*str = ' ';
++str;
}
}
case 's': /* Symbol name with offset and size (iff offset != 0) */
case 'S': /* Symbol name unconditionally with offset and size */
{
unsigned long sym_size, sym_offset;
char namebuf[KSYM_NAME_LEN+1];
/* Advance parents fmt string, as we have consumed 's' or 'S' */
++*fmt_ptr;
s = symbols_lookup((unsigned long)arg, &sym_size, &sym_offset, namebuf);
/* If the symbol is not found, fall back to printing the address */
if ( !s )
break;
/* Print symbol name */
str = string(str, end, s, -1, -1, 0);
if ( fmt[1] == 'S' || sym_offset != 0 )
{
/* Print '+<offset>/<len>' */
str = number(str, end, sym_offset, 16, -1, -1, SPECIAL|SIGN|PLUS);
if ( str < end )
*str = '/';
++str;
str = number(str, end, sym_size, 16, -1, -1, SPECIAL);
}
return str;
}
case 'v': /* d<domain-id>v<vcpu-id> from a struct vcpu */
{
const struct vcpu *v = arg;
++*fmt_ptr;
if ( str < end )
*str = 'd';
str = number(str + 1, end, v->domain->domain_id, 10, -1, -1, 0);
if ( str < end )
*str = 'v';
return number(str + 1, end, v->vcpu_id, 10, -1, -1, 0);
}
}
if ( field_width == -1 )
{
field_width = 2 * sizeof(void *);
flags |= ZEROPAD;
}
return number(str, end, (unsigned long)arg,
16, field_width, precision, flags);
}
