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/* Support files for newlib/GDB simulator.
* $Id$
*/
#include <_ansi.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/fcntl.h>
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>
#include <errno.h>
#include <reent.h>
#include "swi.h"
#include <bspopts.h>
int armulator_stdin;
int armulator_stdout;
int armulator_stderr;
#ifdef ARM_RDI_MONITOR
static inline int
do_AngelSWI (int reason, void * arg)
{
int value;
asm volatile ("mov r0, %1; mov r1, %2; swi %a3; mov %0, r0"
: "=r" (value) /* Outputs */
: "r" (reason), "r" (arg), "i" (AngelSWI) /* Inputs */
: "r0", "r1", "lr"
/* Clobbers r0 and r1, and lr if in supervisor mode */);
return value;
}
#endif /* ARM_RDI_MONITOR */
void
initialize_monitor_handles (void)
{
#ifdef ARM_RDI_MONITOR
int volatile block[3];
block[0] = (int) ":tt";
block[2] = 3; /* length of filename */
block[1] = 0; /* mode "r" */
armulator_stdin = do_AngelSWI (AngelSWI_Reason_Open, (void *)block);
block[0] = (int) ":tt";
block[2] = 3; /* length of filename */
block[1] = 4; /* mode "w" */
armulator_stdout = armulator_stderr = do_AngelSWI (AngelSWI_Reason_Open, (void *)block);
#else
int fh;
const char * name;
name = ":tt";
asm ("mov r0,%2; mov r1, #0; swi %a1; mov %0, r0"
: "=r"(fh)
: "i" (SWI_Open),"r"(name)
: "r0","r1");
armulator_stdin = fh;
name = ":tt";
asm ("mov r0,%2; mov r1, #4; swi %a1; mov %0, r0"
: "=r"(fh)
: "i" (SWI_Open),"r"(name)
: "r0","r1");
armulator_stdout = armulator_stderr = fh;
#endif
}
/* Returns # chars not! read */
int
_swiread (int file,
char * ptr,
int len)
{
int fh = file;
#ifdef ARM_RDI_MONITOR
int block[3];
block[0] = fh;
block[1] = (int) ptr;
block[2] = len;
return do_AngelSWI (AngelSWI_Reason_Read, block);
#else
asm ("mov r0, %1; mov r1, %2;mov r2, %3; swi %a0"
: /* No outputs */
: "i"(SWI_Read), "r"(fh), "r"(ptr), "r"(len)
: "r0","r1","r2");
#endif
}
/* Returns #chars not! written */
int
_swiwrite (
int file,
char * ptr,
int len)
{
int fh = file;
#ifdef ARM_RDI_MONITOR
int block[3];
block[0] = fh;
block[1] = (int) ptr;
block[2] = len;
return do_AngelSWI (AngelSWI_Reason_Write, block);
#else
asm ("mov r0, %1; mov r1, %2;mov r2, %3; swi %a0"
: /* No outputs */
: "i"(SWI_Write), "r"(fh), "r"(ptr), "r"(len)
: "r0","r1","r2");
#endif
}
/*
* Move me
*/
void
bsp_cleanup (void )
{
/* FIXME: return code is thrown away */
#ifdef ARM_RDI_MONITOR
do_AngelSWI (AngelSWI_Reason_ReportException,
(void *) ADP_Stopped_ApplicationExit);
#else
asm ("swi %a0" :: "i" (SWI_Exit));
#endif
}
/*
* Technically could use this as guts of a "real-time clock driver"
*/
#if 0
int
_gettimeofday (struct timeval * tp, struct timezone * tzp)
{
if (tp)
{
/* Ask the host for the seconds since the Unix epoch */
#ifdef ARM_RDI_MONITOR
tp->tv_sec = do_AngelSWI (AngelSWI_Reason_Time,NULL);
#else
{
int value;
asm ("swi %a1; mov %0, r0" : "=r" (value): "i" (SWI_Time) : "r0");
tp->tv_sec = value;
}
#endif
tp->tv_usec = 0;
}
/* Return fixed data for the timezone */
if (tzp)
{
tzp->tz_minuteswest = 0;
tzp->tz_dsttime = 0;
}
return 0;
}
#endif
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