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/* sparc device support
Copyright (C) 1999 Cygnus Solutions. */
#include "sim-main.h"
#include "dev32.h"
#ifdef HAVE_DV_SOCKSER
#include "dv-sockser.h"
#endif
/* ??? At present this is to match erc32 so outbyte works. */
device sparc_devices;
int
device_io_read_buffer (device *me, void *source, int space,
address_word addr, unsigned nr_bytes,
SIM_CPU *cpu, sim_cia cia)
{
SIM_DESC sd = CPU_STATE (cpu);
if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
return nr_bytes;
#ifdef HAVE_DV_SOCKSER
if (addr == UART_INCHAR_ADDR)
{
int c = dv_sockser_read (sd);
if (c == -1)
return 0;
*(char *) source = c;
return 1;
}
if (addr == UART_STATUS_ADDR)
{
int status = dv_sockser_status (sd);
unsigned char *p = source;
p[0] = 0;
p[1] = (((status & DV_SOCKSER_INPUT_EMPTY)
#ifdef UART_INPUT_READY0
? UART_INPUT_READY : 0)
#else
? 0 : UART_INPUT_READY)
#endif
+ ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0));
return 2;
}
#endif
/* erc32 compatibility */
if (addr == RXSTAT)
{
int Ucontrol = 0;
unsigned char *p = source;
Ucontrol |= 1;
Ucontrol |= 0x00060006;
SETTSI (p, Ucontrol);
}
return nr_bytes;
}
int
device_io_write_buffer (device *me, const void *source, int space,
address_word addr, unsigned nr_bytes,
SIM_CPU *cpu, sim_cia cia)
{
SIM_DESC sd = CPU_STATE (cpu);
#if 0 && WITH_SCACHE
if (addr == MCCR_ADDR)
{
if ((*(const char *) source & MCCR_CP) != 0)
scache_flush (sd);
return nr_bytes;
}
#endif
if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
return nr_bytes;
#ifdef HAVE_DV_SOCKSER
if (addr == UART_OUTCHAR_ADDR)
{
int rc = dv_sockser_write (sd, *(char *) source);
return rc == 1;
}
#endif
if (addr == RXADATA)
{
sim_io_printf (sd, "%c", GETTSI (source));
}
return nr_bytes;
}
void device_error () {}
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