teems/Enclave/utils.cpp

#include "utils.hpp"

/*
 * printf:
 *   Invokes OCALL to display the enclave buffer to the terminal.
 */
void printf(const char *fmt, ...)
{
    char buf[BUFSIZ] = {'\0'};
    va_list ap;
    va_start(ap, fmt);
    vsnprintf(buf, BUFSIZ, fmt, ap);
    va_end(ap);
    ocall_print_string(buf);
}

/*
 * printf_with_rtclock:
 *   Invokes OCALL to display the enclave buffer to the terminal with a
 *   timestamp and returns the timestamp.
 */
unsigned long printf_with_rtclock(const char *fmt, ...)
{
    unsigned long ret;
    char buf[BUFSIZ] = {'\0'};
    va_list ap;
    va_start(ap, fmt);
    vsnprintf(buf, BUFSIZ, fmt, ap);
    va_end(ap);
    ocall_print_string_with_rtclock(&ret, buf);
    return ret;
}

/*
 * printf_with_rtclock_diff:
 *   Invokes OCALL to display the enclave buffer to the terminal with a
 *   timestamp and returns the timestamp.  Also prints the difference from
 *   the before timestamp.
 */
unsigned long printf_with_rtclock_diff(unsigned long before, const char *fmt, ...)
{
    unsigned long ret;
    char buf[BUFSIZ] = {'\0'};
    va_list ap;
    va_start(ap, fmt);
    vsnprintf(buf, BUFSIZ, fmt, ap);
    va_end(ap);
    ocall_print_string_with_rtclock_diff(&ret, buf, before);
    return ret;
}