acrn-hypervisor/hypervisor/debug/printf.c
Ziheng Li eb8bcb06b3 Update copyright year range in code headers
Modified the copyright year range in code, and corrected "int32_tel"
into "Intel" in two "hypervisor/include/debug/profiling.h" and
"hypervisor/include/debug/profiling_internal.h".

Tracked-On: #7559
Signed-off-by: Ziheng Li <ziheng.li@intel.com>
2022-07-15 11:48:35 +08:00

72 lines
1.4 KiB
C

/*
* Copyright (C) 2018-2022 Intel Corporation.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <types.h>
#include <rtl.h>
#include <util.h>
#include <sprintf.h>
#include <console.h>
static void
charout(size_t cmd, const char *s_arg, uint32_t sz_arg, struct snprint_param *param)
{
const char *s = s_arg;
uint32_t sz = sz_arg;
/* pointer to an integer to store the number of characters */
size_t nchars = param->wrtn;
/* working pointer */
const char *p = s;
size_t len;
/* copy mode ? */
if (cmd == PRINT_CMD_COPY) {
if (sz > 0U) { /* copy 'sz' characters */
len = console_write(s, sz);
s += len;
}
nchars += (s - p);
} else {
/* fill mode */
nchars += sz;
while (sz != 0U) {
console_putc(s);
sz--;
}
}
param->wrtn = nchars;
}
void vprintf(const char *fmt, va_list args)
{
/* struct to store all necessary parameters */
struct print_param param;
struct snprint_param snparam;
/* initialize parameters */
(void)memset(&snparam, 0U, sizeof(snparam));
(void)memset(&param, 0U, sizeof(param));
param.emit = charout;
param.data = &snparam;
/* execute the printf() */
do_print(fmt, &param, args);
}
void printf(const char *fmt, ...)
{
/* variable argument list needed for do_print() */
va_list args;
va_start(args, fmt);
/* execute the printf() */
vprintf(fmt, args);
/* destroy parameter list */
va_end(args);
}