You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
137 lines
2.3 KiB
C
137 lines
2.3 KiB
C
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
#include <poll.h>
|
|
|
|
|
|
#define vhpi0 2 /* forcing 0 */
|
|
#define vhpi1 3 /* forcing 1 */
|
|
|
|
static uint64_t from_std_logic_vector(unsigned char *p, unsigned long len)
|
|
{
|
|
unsigned long ret = 0;
|
|
|
|
if (len > 64) {
|
|
fprintf(stderr, "%s: invalid length %lu\n", __func__, len);
|
|
exit(1);
|
|
}
|
|
|
|
for (unsigned long i = 0; i < len; i++) {
|
|
unsigned char bit;
|
|
|
|
if (*p == vhpi0) {
|
|
bit = 0;
|
|
} else if (*p == vhpi1) {
|
|
bit = 1;
|
|
} else {
|
|
fprintf(stderr, "%s: bad bit %d\n", __func__, *p);
|
|
bit = 0;
|
|
}
|
|
|
|
ret = (ret << 1) | bit;
|
|
p++;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void to_std_logic_vector(unsigned long val, unsigned char *p,
|
|
unsigned long len)
|
|
{
|
|
if (len > 64) {
|
|
fprintf(stderr, "%s: invalid length %lu\n", __func__, len);
|
|
exit(1);
|
|
}
|
|
|
|
for (unsigned long i = 0; i < len; i++) {
|
|
if ((val >> (len-1-i) & 1))
|
|
*p = vhpi1;
|
|
else
|
|
*p = vhpi0;
|
|
|
|
p++;
|
|
}
|
|
}
|
|
|
|
static struct termios oldt;
|
|
|
|
static void restore_termios(void)
|
|
{
|
|
tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
|
|
}
|
|
|
|
static void nonblocking(void)
|
|
{
|
|
static bool initialized = false;
|
|
|
|
if (!initialized) {
|
|
static struct termios newt;
|
|
|
|
tcgetattr(STDIN_FILENO, &oldt);
|
|
newt = oldt;
|
|
newt.c_lflag &= ~(ICANON|ECHO);
|
|
|
|
newt.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
|
|
newt.c_oflag &= ~(OPOST);
|
|
newt.c_cflag |= (CS8);
|
|
newt.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
|
|
|
|
tcsetattr(STDIN_FILENO, TCSANOW, &newt);
|
|
initialized = true;
|
|
atexit(restore_termios);
|
|
}
|
|
}
|
|
|
|
void sim_console_read(unsigned char *__rt)
|
|
{
|
|
int ret;
|
|
unsigned long val = 0;
|
|
|
|
nonblocking();
|
|
|
|
ret = read(STDIN_FILENO, &val, 1);
|
|
if (ret != 1) {
|
|
fprintf(stderr, "%s: read of stdin returns %d\n", __func__, ret);
|
|
exit(1);
|
|
}
|
|
|
|
//fprintf(stderr, "read returns %c\n", val);
|
|
|
|
to_std_logic_vector(val, __rt, 64);
|
|
}
|
|
|
|
void sim_console_poll(unsigned char *__rt)
|
|
{
|
|
int ret;
|
|
struct pollfd fdset[1];
|
|
uint8_t val = 0;
|
|
|
|
nonblocking();
|
|
|
|
memset(fdset, 0, sizeof(fdset));
|
|
|
|
fdset[0].fd = STDIN_FILENO;
|
|
fdset[0].events = POLLIN;
|
|
|
|
ret = poll(fdset, 1, -1);
|
|
//fprintf(stderr, "poll returns %d\n", ret);
|
|
|
|
if (ret == 1)
|
|
val = 1;
|
|
|
|
to_std_logic_vector(val, __rt, 64);
|
|
}
|
|
|
|
void sim_console_write(unsigned char *__rs)
|
|
{
|
|
uint8_t val;
|
|
|
|
val = from_std_logic_vector(__rs, 64);
|
|
|
|
fprintf(stderr, "%c", val);
|
|
}
|