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Revert the last two patches to go back to a state before this file was

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controversial.
This commit is contained in:
Rob Landley 2006-06-20 16:17:24 +00:00
parent 2818b292fb
commit 57c1f73dd5
1 changed files with 95 additions and 17 deletions
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112
libbb/speed_table.c
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@ -7,33 +7,111 @@
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/ */
#include <termios.h>
#include "libbb.h" #include "libbb.h"
static const unsigned short speeds[] = { struct speed_map {
0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, unsigned short speed;
19200, 38400, 57600>>8, 115200>>8, 230400>>8, 460800>>8, 500000>>8, unsigned short value;
576000>>8, 921600>>8, 1000000>>8, 1152000>>8, 1500000>>8, 2000000>>8,
3000000>>8, 3500000>>8, 4000000>>8
}; };
unsigned int tty_baud_to_value(speed_t speed) static const struct speed_map speeds[] = {
{ {B0, 0},
int i; {B50, 50},
{B75, 75},
{B110, 110},
{B134, 134},
{B150, 150},
{B200, 200},
{B300, 300},
{B600, 600},
{B1200, 1200},
{B1800, 1800},
{B2400, 2400},
{B4800, 4800},
{B9600, 9600},
#ifdef B19200
{B19200, 19200},
#elif defined(EXTA)
{EXTA, 19200},
#endif
#ifdef B38400
{B38400, 38400/256 + 0x8000U},
#elif defined(EXTB)
{EXTB, 38400/256 + 0x8000U},
#endif
#ifdef B57600
{B57600, 57600/256 + 0x8000U},
#endif
#ifdef B115200
{B115200, 115200/256 + 0x8000U},
#endif
#ifdef B230400
{B230400, 230400/256 + 0x8000U},
#endif
#ifdef B460800
{B460800, 460800/256 + 0x8000U},
#endif
};
for (i=0; i<sizeof(speeds) / sizeof(*speeds); i++) enum { NUM_SPEEDS = (sizeof(speeds) / sizeof(struct speed_map)) };
if (speed == speeds[i] * (i>15 ? 256 : 1))
return i>15 ? (i+4096-14) : i; unsigned long bb_baud_to_value(speed_t speed)
{
int i = 0;
do {
if (speed == speeds[i].speed) {
if (speeds[i].value & 0x8000U) {
return ((unsigned long) (speeds[i].value) & 0x7fffU) * 256;
}
return speeds[i].value;
}
} while (++i < NUM_SPEEDS);
return 0; return 0;
} }
speed_t tty_value_to_baud(unsigned int value) speed_t bb_value_to_baud(unsigned long value)
{ {
int i; int i = 0;
for (i=0; i<sizeof(speeds) / sizeof(*speeds); i++) do {
if (value == (i>15 ? (i+4096-14) : i)) if (value == bb_baud_to_value(speeds[i].speed)) {
return speeds[i] * (i>15 ? 256 : 1); return speeds[i].speed;
}
} while (++i < NUM_SPEEDS);
return -1; return (speed_t) - 1;
} }
#if 0
/* testing code */
#include <stdio.h>
int main(void)
{
unsigned long v;
speed_t s;
for (v = 0 ; v < 500000 ; v++) {
s = bb_value_to_baud(v);
if (s == (speed_t) -1) {
continue;
}
printf("v = %lu -- s = %0lo\n", v, (unsigned long) s);
}
printf("-------------------------------\n");
for (s = 0 ; s < 010017+1 ; s++) {
v = bb_baud_to_value(s);
if (!v) {
continue;
}
printf("v = %lu -- s = %0lo\n", v, (unsigned long) s);
}
return 0;
}
#endif