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BCD cleanup 

Combine multiple BCD implementations.

Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-11-20 00:03:47 +00:00
parent a992fe3d0f
commit abd0c6bda0
5 changed files with 79 additions and 98 deletions
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50
hw/m48t59.c
View File

@ -80,16 +80,6 @@ typedef struct M48t59SysBusState {
} M48t59SysBusState;
/* Fake timer functions */
/* Generic helpers for BCD */
static inline uint8_t toBCD (uint8_t value)
{
return (((value / 10) % 10) << 4) | (value % 10);
}
static inline uint8_t fromBCD (uint8_t BCD)
{
return ((BCD >> 4) * 10) + (BCD & 0x0F);
}
/* Alarm management */
static void alarm_cb (void *opaque)
@ -219,7 +209,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
break;
case 0x1FF2:
/* alarm seconds */
tmp = fromBCD(val & 0x7F);
tmp = from_bcd(val & 0x7F);
if (tmp >= 0 && tmp <= 59) {
NVRAM->alarm.tm_sec = tmp;
NVRAM->buffer[0x1FF2] = val;
@ -228,7 +218,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
break;
case 0x1FF3:
/* alarm minutes */
tmp = fromBCD(val & 0x7F);
tmp = from_bcd(val & 0x7F);
if (tmp >= 0 && tmp <= 59) {
NVRAM->alarm.tm_min = tmp;
NVRAM->buffer[0x1FF3] = val;
@ -237,7 +227,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
break;
case 0x1FF4:
/* alarm hours */
tmp = fromBCD(val & 0x3F);
tmp = from_bcd(val & 0x3F);
if (tmp >= 0 && tmp <= 23) {
NVRAM->alarm.tm_hour = tmp;
NVRAM->buffer[0x1FF4] = val;
@ -246,7 +236,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
break;
case 0x1FF5:
/* alarm date */
tmp = fromBCD(val & 0x1F);
tmp = from_bcd(val & 0x1F);
if (tmp != 0) {
NVRAM->alarm.tm_mday = tmp;
NVRAM->buffer[0x1FF5] = val;
@ -270,7 +260,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FF9:
case 0x07F9:
/* seconds (BCD) */
tmp = fromBCD(val & 0x7F);
tmp = from_bcd(val & 0x7F);
if (tmp >= 0 && tmp <= 59) {
get_time(NVRAM, &tm);
tm.tm_sec = tmp;
@ -289,7 +279,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FFA:
case 0x07FA:
/* minutes (BCD) */
tmp = fromBCD(val & 0x7F);
tmp = from_bcd(val & 0x7F);
if (tmp >= 0 && tmp <= 59) {
get_time(NVRAM, &tm);
tm.tm_min = tmp;
@ -299,7 +289,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FFB:
case 0x07FB:
/* hours (BCD) */
tmp = fromBCD(val & 0x3F);
tmp = from_bcd(val & 0x3F);
if (tmp >= 0 && tmp <= 23) {
get_time(NVRAM, &tm);
tm.tm_hour = tmp;
@ -309,7 +299,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FFC:
case 0x07FC:
/* day of the week / century */
tmp = fromBCD(val & 0x07);
tmp = from_bcd(val & 0x07);
get_time(NVRAM, &tm);
tm.tm_wday = tmp;
set_time(NVRAM, &tm);
@ -318,7 +308,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FFD:
case 0x07FD:
/* date */
tmp = fromBCD(val & 0x1F);
tmp = from_bcd(val & 0x1F);
if (tmp != 0) {
get_time(NVRAM, &tm);
tm.tm_mday = tmp;
@ -328,7 +318,7 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FFE:
case 0x07FE:
/* month */
tmp = fromBCD(val & 0x1F);
tmp = from_bcd(val & 0x1F);
if (tmp >= 1 && tmp <= 12) {
get_time(NVRAM, &tm);
tm.tm_mon = tmp - 1;
@ -338,13 +328,13 @@ void m48t59_write (void *opaque, uint32_t addr, uint32_t val)
case 0x1FFF:
case 0x07FF:
/* year */
tmp = fromBCD(val);
tmp = from_bcd(val);
if (tmp >= 0 && tmp <= 99) {
get_time(NVRAM, &tm);
if (NVRAM->type == 8)
tm.tm_year = fromBCD(val) + 68; // Base year is 1968
tm.tm_year = from_bcd(val) + 68; // Base year is 1968
else
tm.tm_year = fromBCD(val);
tm.tm_year = from_bcd(val);
set_time(NVRAM, &tm);
}
break;
@ -410,19 +400,19 @@ uint32_t m48t59_read (void *opaque, uint32_t addr)
case 0x07F9:
/* seconds (BCD) */
get_time(NVRAM, &tm);
retval = (NVRAM->buffer[addr] & 0x80) | toBCD(tm.tm_sec);
retval = (NVRAM->buffer[addr] & 0x80) | to_bcd(tm.tm_sec);
break;
case 0x1FFA:
case 0x07FA:
/* minutes (BCD) */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_min);
retval = to_bcd(tm.tm_min);
break;
case 0x1FFB:
case 0x07FB:
/* hours (BCD) */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_hour);
retval = to_bcd(tm.tm_hour);
break;
case 0x1FFC:
case 0x07FC:
@ -434,22 +424,22 @@ uint32_t m48t59_read (void *opaque, uint32_t addr)
case 0x07FD:
/* date */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_mday);
retval = to_bcd(tm.tm_mday);
break;
case 0x1FFE:
case 0x07FE:
/* month */
get_time(NVRAM, &tm);
retval = toBCD(tm.tm_mon + 1);
retval = to_bcd(tm.tm_mon + 1);
break;
case 0x1FFF:
case 0x07FF:
/* year */
get_time(NVRAM, &tm);
if (NVRAM->type == 8)
retval = toBCD(tm.tm_year - 68); // Base year is 1968
retval = to_bcd(tm.tm_year - 68); // Base year is 1968
else
retval = toBCD(tm.tm_year);
retval = to_bcd(tm.tm_year);
break;
default:
/* Check lock registers state */

36
hw/mc146818rtc.c
View File

@ -259,7 +259,7 @@ static void cmos_ioport_write(void *opaque, uint32_t addr, uint32_t data)
}
}
static inline int to_bcd(RTCState *s, int a)
static inline int rtc_to_bcd(RTCState *s, int a)
{
if (s->cmos_data[RTC_REG_B] & REG_B_DM) {
return a;
@ -268,7 +268,7 @@ static inline int to_bcd(RTCState *s, int a)
}
}
static inline int from_bcd(RTCState *s, int a)
static inline int rtc_from_bcd(RTCState *s, int a)
{
if (s->cmos_data[RTC_REG_B] & REG_B_DM) {
return a;
@ -281,17 +281,17 @@ static void rtc_set_time(RTCState *s)
{
struct tm *tm = &s->current_tm;
tm->tm_sec = from_bcd(s, s->cmos_data[RTC_SECONDS]);
tm->tm_min = from_bcd(s, s->cmos_data[RTC_MINUTES]);
tm->tm_hour = from_bcd(s, s->cmos_data[RTC_HOURS] & 0x7f);
tm->tm_sec = rtc_from_bcd(s, s->cmos_data[RTC_SECONDS]);
tm->tm_min = rtc_from_bcd(s, s->cmos_data[RTC_MINUTES]);
tm->tm_hour = rtc_from_bcd(s, s->cmos_data[RTC_HOURS] & 0x7f);
if (!(s->cmos_data[RTC_REG_B] & 0x02) &&
(s->cmos_data[RTC_HOURS] & 0x80)) {
tm->tm_hour += 12;
}
tm->tm_wday = from_bcd(s, s->cmos_data[RTC_DAY_OF_WEEK]) - 1;
tm->tm_mday = from_bcd(s, s->cmos_data[RTC_DAY_OF_MONTH]);
tm->tm_mon = from_bcd(s, s->cmos_data[RTC_MONTH]) - 1;
tm->tm_year = from_bcd(s, s->cmos_data[RTC_YEAR]) + s->base_year - 1900;
tm->tm_wday = rtc_from_bcd(s, s->cmos_data[RTC_DAY_OF_WEEK]) - 1;
tm->tm_mday = rtc_from_bcd(s, s->cmos_data[RTC_DAY_OF_MONTH]);
tm->tm_mon = rtc_from_bcd(s, s->cmos_data[RTC_MONTH]) - 1;
tm->tm_year = rtc_from_bcd(s, s->cmos_data[RTC_YEAR]) + s->base_year - 1900;
}
static void rtc_copy_date(RTCState *s)
@ -299,24 +299,24 @@ static void rtc_copy_date(RTCState *s)
const struct tm *tm = &s->current_tm;
int year;
s->cmos_data[RTC_SECONDS] = to_bcd(s, tm->tm_sec);
s->cmos_data[RTC_MINUTES] = to_bcd(s, tm->tm_min);
s->cmos_data[RTC_SECONDS] = rtc_to_bcd(s, tm->tm_sec);
s->cmos_data[RTC_MINUTES] = rtc_to_bcd(s, tm->tm_min);
if (s->cmos_data[RTC_REG_B] & 0x02) {
/* 24 hour format */
s->cmos_data[RTC_HOURS] = to_bcd(s, tm->tm_hour);
s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, tm->tm_hour);
} else {
/* 12 hour format */
s->cmos_data[RTC_HOURS] = to_bcd(s, tm->tm_hour % 12);
s->cmos_data[RTC_HOURS] = rtc_to_bcd(s, tm->tm_hour % 12);
if (tm->tm_hour >= 12)
s->cmos_data[RTC_HOURS] |= 0x80;
}
s->cmos_data[RTC_DAY_OF_WEEK] = to_bcd(s, tm->tm_wday + 1);
s->cmos_data[RTC_DAY_OF_MONTH] = to_bcd(s, tm->tm_mday);
s->cmos_data[RTC_MONTH] = to_bcd(s, tm->tm_mon + 1);
s->cmos_data[RTC_DAY_OF_WEEK] = rtc_to_bcd(s, tm->tm_wday + 1);
s->cmos_data[RTC_DAY_OF_MONTH] = rtc_to_bcd(s, tm->tm_mday);
s->cmos_data[RTC_MONTH] = rtc_to_bcd(s, tm->tm_mon + 1);
year = (tm->tm_year - s->base_year) % 100;
if (year < 0)
year += 100;
s->cmos_data[RTC_YEAR] = to_bcd(s, year);
s->cmos_data[RTC_YEAR] = rtc_to_bcd(s, year);
}
/* month is between 0 and 11. */
@ -497,7 +497,7 @@ static void rtc_set_date_from_host(RTCState *s)
qemu_get_timedate(&tm, 0);
rtc_set_date(s, &tm);
val = to_bcd(s, (tm.tm_year / 100) + 19);
val = rtc_to_bcd(s, (tm.tm_year / 100) + 19);
rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);
}

70
hw/omap1.c
View File

@ -3358,16 +3358,6 @@ static void omap_rtc_alarm_update(struct omap_rtc_s *s)
printf("%s: conversion failed\n", __FUNCTION__);
}
static inline uint8_t omap_rtc_bcd(int num)
{
return ((num / 10) << 4) | (num % 10);
}
static inline int omap_rtc_bin(uint8_t num)
{
return (num & 15) + 10 * (num >> 4);
}
static uint32_t omap_rtc_read(void *opaque, target_phys_addr_t addr)
{
struct omap_rtc_s *s = (struct omap_rtc_s *) opaque;
@ -3376,51 +3366,51 @@ static uint32_t omap_rtc_read(void *opaque, target_phys_addr_t addr)
switch (offset) {
case 0x00: /* SECONDS_REG */
return omap_rtc_bcd(s->current_tm.tm_sec);
return to_bcd(s->current_tm.tm_sec);
case 0x04: /* MINUTES_REG */
return omap_rtc_bcd(s->current_tm.tm_min);
return to_bcd(s->current_tm.tm_min);
case 0x08: /* HOURS_REG */
if (s->pm_am)
return ((s->current_tm.tm_hour > 11) << 7) |
omap_rtc_bcd(((s->current_tm.tm_hour - 1) % 12) + 1);
to_bcd(((s->current_tm.tm_hour - 1) % 12) + 1);
else
return omap_rtc_bcd(s->current_tm.tm_hour);
return to_bcd(s->current_tm.tm_hour);
case 0x0c: /* DAYS_REG */
return omap_rtc_bcd(s->current_tm.tm_mday);
return to_bcd(s->current_tm.tm_mday);
case 0x10: /* MONTHS_REG */
return omap_rtc_bcd(s->current_tm.tm_mon + 1);
return to_bcd(s->current_tm.tm_mon + 1);
case 0x14: /* YEARS_REG */
return omap_rtc_bcd(s->current_tm.tm_year % 100);
return to_bcd(s->current_tm.tm_year % 100);
case 0x18: /* WEEK_REG */
return s->current_tm.tm_wday;
case 0x20: /* ALARM_SECONDS_REG */
return omap_rtc_bcd(s->alarm_tm.tm_sec);
return to_bcd(s->alarm_tm.tm_sec);
case 0x24: /* ALARM_MINUTES_REG */
return omap_rtc_bcd(s->alarm_tm.tm_min);
return to_bcd(s->alarm_tm.tm_min);
case 0x28: /* ALARM_HOURS_REG */
if (s->pm_am)
return ((s->alarm_tm.tm_hour > 11) << 7) |
omap_rtc_bcd(((s->alarm_tm.tm_hour - 1) % 12) + 1);
to_bcd(((s->alarm_tm.tm_hour - 1) % 12) + 1);
else
return omap_rtc_bcd(s->alarm_tm.tm_hour);
return to_bcd(s->alarm_tm.tm_hour);
case 0x2c: /* ALARM_DAYS_REG */
return omap_rtc_bcd(s->alarm_tm.tm_mday);
return to_bcd(s->alarm_tm.tm_mday);
case 0x30: /* ALARM_MONTHS_REG */
return omap_rtc_bcd(s->alarm_tm.tm_mon + 1);
return to_bcd(s->alarm_tm.tm_mon + 1);
case 0x34: /* ALARM_YEARS_REG */
return omap_rtc_bcd(s->alarm_tm.tm_year % 100);
return to_bcd(s->alarm_tm.tm_year % 100);
case 0x40: /* RTC_CTRL_REG */
return (s->pm_am << 3) | (s->auto_comp << 2) |
@ -3459,7 +3449,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
printf("RTC SEC_REG <-- %02x\n", value);
#endif
s->ti -= s->current_tm.tm_sec;
s->ti += omap_rtc_bin(value);
s->ti += from_bcd(value);
return;
case 0x04: /* MINUTES_REG */
@ -3467,7 +3457,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
printf("RTC MIN_REG <-- %02x\n", value);
#endif
s->ti -= s->current_tm.tm_min * 60;
s->ti += omap_rtc_bin(value) * 60;
s->ti += from_bcd(value) * 60;
return;
case 0x08: /* HOURS_REG */
@ -3476,10 +3466,10 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#endif
s->ti -= s->current_tm.tm_hour * 3600;
if (s->pm_am) {
s->ti += (omap_rtc_bin(value & 0x3f) & 12) * 3600;
s->ti += (from_bcd(value & 0x3f) & 12) * 3600;
s->ti += ((value >> 7) & 1) * 43200;
} else
s->ti += omap_rtc_bin(value & 0x3f) * 3600;
s->ti += from_bcd(value & 0x3f) * 3600;
return;
case 0x0c: /* DAYS_REG */
@ -3487,7 +3477,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
printf("RTC DAY_REG <-- %02x\n", value);
#endif
s->ti -= s->current_tm.tm_mday * 86400;
s->ti += omap_rtc_bin(value) * 86400;
s->ti += from_bcd(value) * 86400;
return;
case 0x10: /* MONTHS_REG */
@ -3495,7 +3485,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
printf("RTC MTH_REG <-- %02x\n", value);
#endif
memcpy(&new_tm, &s->current_tm, sizeof(new_tm));
new_tm.tm_mon = omap_rtc_bin(value);
new_tm.tm_mon = from_bcd(value);
ti[0] = mktimegm(&s->current_tm);
ti[1] = mktimegm(&new_tm);
@ -3505,7 +3495,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
} else {
/* A less accurate version */
s->ti -= s->current_tm.tm_mon * 2592000;
s->ti += omap_rtc_bin(value) * 2592000;
s->ti += from_bcd(value) * 2592000;
}
return;
@ -3514,7 +3504,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
printf("RTC YRS_REG <-- %02x\n", value);
#endif
memcpy(&new_tm, &s->current_tm, sizeof(new_tm));
new_tm.tm_year += omap_rtc_bin(value) - (new_tm.tm_year % 100);
new_tm.tm_year += from_bcd(value) - (new_tm.tm_year % 100);
ti[0] = mktimegm(&s->current_tm);
ti[1] = mktimegm(&new_tm);
@ -3524,7 +3514,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
} else {
/* A less accurate version */
s->ti -= (s->current_tm.tm_year % 100) * 31536000;
s->ti += omap_rtc_bin(value) * 31536000;
s->ti += from_bcd(value) * 31536000;
}
return;
@ -3535,7 +3525,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#ifdef ALMDEBUG
printf("ALM SEC_REG <-- %02x\n", value);
#endif
s->alarm_tm.tm_sec = omap_rtc_bin(value);
s->alarm_tm.tm_sec = from_bcd(value);
omap_rtc_alarm_update(s);
return;
@ -3543,7 +3533,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#ifdef ALMDEBUG
printf("ALM MIN_REG <-- %02x\n", value);
#endif
s->alarm_tm.tm_min = omap_rtc_bin(value);
s->alarm_tm.tm_min = from_bcd(value);
omap_rtc_alarm_update(s);
return;
@ -3553,10 +3543,10 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#endif
if (s->pm_am)
s->alarm_tm.tm_hour =
((omap_rtc_bin(value & 0x3f)) % 12) +
((from_bcd(value & 0x3f)) % 12) +
((value >> 7) & 1) * 12;
else
s->alarm_tm.tm_hour = omap_rtc_bin(value);
s->alarm_tm.tm_hour = from_bcd(value);
omap_rtc_alarm_update(s);
return;
@ -3564,7 +3554,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#ifdef ALMDEBUG
printf("ALM DAY_REG <-- %02x\n", value);
#endif
s->alarm_tm.tm_mday = omap_rtc_bin(value);
s->alarm_tm.tm_mday = from_bcd(value);
omap_rtc_alarm_update(s);
return;
@ -3572,7 +3562,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#ifdef ALMDEBUG
printf("ALM MON_REG <-- %02x\n", value);
#endif
s->alarm_tm.tm_mon = omap_rtc_bin(value);
s->alarm_tm.tm_mon = from_bcd(value);
omap_rtc_alarm_update(s);
return;
@ -3580,7 +3570,7 @@ static void omap_rtc_write(void *opaque, target_phys_addr_t addr,
#ifdef ALMDEBUG
printf("ALM YRS_REG <-- %02x\n", value);
#endif
s->alarm_tm.tm_year = omap_rtc_bin(value);
s->alarm_tm.tm_year = from_bcd(value);
omap_rtc_alarm_update(s);
return;

10
hw/twl92230.c
View File

@ -183,16 +183,6 @@ static void menelaus_reset(i2c_slave *i2c)
menelaus_update(s);
}
static inline uint8_t to_bcd(int val)
{
return ((val / 10) << 4) | (val % 10);
}
static inline int from_bcd(uint8_t val)
{
return ((val >> 4) * 10) + (val & 0x0f);
}
static void menelaus_gpio_set(void *opaque, int line, int level)
{
MenelausState *s = (MenelausState *) opaque;

11
qemu-common.h
View File

@ -248,6 +248,17 @@ void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
struct Monitor;
typedef struct Monitor Monitor;
/* Convert a byte between binary and BCD. */
static inline uint8_t to_bcd(uint8_t val)
{
return ((val / 10) << 4) | (val % 10);
}
static inline uint8_t from_bcd(uint8_t val)
{
return ((val >> 4) * 10) + (val & 0x0f);
}
#include "module.h"
#endif /* dyngen-exec.h hack */