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#include "sim-main.h"
#include "targ-vals.h"
#ifdef HAVE_UTIME_H
#include <utime.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#include <sys/stat.h>
#include <sys/times.h>
#include <sys/time.h>
#define REG0(X) ((X) & 0x3)
#define REG1(X) (((X) & 0xc) >> 2)
#define REG0_4(X) (((X) & 0x30) >> 4)
#define REG0_8(X) (((X) & 0x300) >> 8)
#define REG1_8(X) (((X) & 0xc00) >> 10)
#define REG0_16(X) (((X) & 0x30000) >> 16)
#define REG1_16(X) (((X) & 0xc0000) >> 18)
INLINE_SIM_MAIN (void)
genericAdd(unsigned32 source, unsigned32 destReg)
{
int z, c, n, v;
unsigned32 dest, sum;
dest = State.regs[destReg];
sum = source + dest;
State.regs[destReg] = sum;
z = (sum == 0);
n = (sum & 0x80000000);
c = (sum < source) || (sum < dest);
v = ((dest & 0x80000000) == (source & 0x80000000)
&& (dest & 0x80000000) != (sum & 0x80000000));
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= ((z ? PSW_Z : 0) | ( n ? PSW_N : 0)
| (c ? PSW_C : 0) | (v ? PSW_V : 0));
}
INLINE_SIM_MAIN (void)
genericSub(unsigned32 source, unsigned32 destReg)
{
int z, c, n, v;
unsigned32 dest, difference;
dest = State.regs[destReg];
difference = dest - source;
State.regs[destReg] = difference;
z = (difference == 0);
n = (difference & 0x80000000);
c = (source > dest);
v = ((dest & 0x80000000) != (source & 0x80000000)
&& (dest & 0x80000000) != (difference & 0x80000000));
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= ((z ? PSW_Z : 0) | ( n ? PSW_N : 0)
| (c ? PSW_C : 0) | (v ? PSW_V : 0));
}
INLINE_SIM_MAIN (void)
genericCmp(unsigned32 leftOpnd, unsigned32 rightOpnd)
{
int z, c, n, v;
unsigned32 value;
value = rightOpnd - leftOpnd;
z = (value == 0);
n = (value & 0x80000000);
c = (leftOpnd > rightOpnd);
v = ((rightOpnd & 0x80000000) != (leftOpnd & 0x80000000)
&& (rightOpnd & 0x80000000) != (value & 0x80000000));
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= ((z ? PSW_Z : 0) | ( n ? PSW_N : 0)
| (c ? PSW_C : 0) | (v ? PSW_V : 0));
}
INLINE_SIM_MAIN (void)
genericOr(unsigned32 source, unsigned32 destReg)
{
int n, z;
State.regs[destReg] |= source;
z = (State.regs[destReg] == 0);
n = (State.regs[destReg] & 0x80000000) != 0;
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= ((z ? PSW_Z : 0) | (n ? PSW_N : 0));
}
INLINE_SIM_MAIN (void)
genericXor(unsigned32 source, unsigned32 destReg)
{
int n, z;
State.regs[destReg] ^= source;
z = (State.regs[destReg] == 0);
n = (State.regs[destReg] & 0x80000000) != 0;
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= ((z ? PSW_Z : 0) | (n ? PSW_N : 0));
}
INLINE_SIM_MAIN (void)
genericBtst(unsigned32 leftOpnd, unsigned32 rightOpnd)
{
unsigned32 temp;
int z, n;
temp = rightOpnd;
temp &= leftOpnd;
n = (temp & 0x80000000) != 0;
z = (temp == 0);
PSW &= ~(PSW_Z | PSW_N | PSW_C | PSW_V);
PSW |= (z ? PSW_Z : 0) | (n ? PSW_N : 0);
}
/* Read/write functions for system call interface. */
INLINE_SIM_MAIN (int)
syscall_read_mem (host_callback *cb, struct cb_syscall *sc,
unsigned long taddr, char *buf, int bytes)
{
SIM_DESC sd = (SIM_DESC) sc->p1;
sim_cpu *cpu = STATE_CPU(sd, 0);
return sim_core_read_buffer (sd, cpu, read_map, buf, taddr, bytes);
}
INLINE_SIM_MAIN (int)
syscall_write_mem (host_callback *cb, struct cb_syscall *sc,
unsigned long taddr, const char *buf, int bytes)
{
SIM_DESC sd = (SIM_DESC) sc->p1;
sim_cpu *cpu = STATE_CPU(sd, 0);
return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
}
/* syscall */
INLINE_SIM_MAIN (void)
do_syscall (void)
{
/* We use this for simulated system calls; we may need to change
it to a reserved instruction if we conflict with uses at
Matsushita. */
int save_errno = errno;
errno = 0;
/* Registers passed to trap 0 */
/* Function number. */
#define FUNC (State.regs[0])
/* Parameters. */
#define PARM1 (State.regs[1])
#define PARM2 (load_word (State.regs[REG_SP] + 12))
#define PARM3 (load_word (State.regs[REG_SP] + 16))
/* Registers set by trap 0 */
#define RETVAL State.regs[0] /* return value */
#define RETERR State.regs[1] /* return error code */
/* Turn a pointer in a register into a pointer into real memory. */
#define MEMPTR(x) (State.mem + x)
if ( FUNC == TARGET_SYS_exit )
{
/* EXIT - caller can look in PARM1 to work out the reason */
if (PARM1 == 0xdead)
State.exception = SIGABRT;
else
{
sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
sim_exited, PARM1);
State.exception = SIGQUIT;
}
State.exited = 1;
}
else
{
CB_SYSCALL syscall;
CB_SYSCALL_INIT (&syscall);
syscall.arg1 = PARM1;
syscall.arg2 = PARM2;
syscall.arg3 = PARM3;
syscall.func = FUNC;
syscall.p1 = (PTR) simulator;
syscall.read_mem = syscall_read_mem;
syscall.write_mem = syscall_write_mem;
cb_syscall (STATE_CALLBACK (simulator), &syscall);
RETERR = syscall.errcode;
RETVAL = syscall.result;
}
errno = save_errno;
}
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