/* Simulator for Motorola's MCore processor
- Copyright (C) 1999-2015 Free Software Foundation, Inc.
+ Copyright (C) 1999-2019 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
This file is part of GDB, the GNU debugger.
}
}
-/* The machine state.
- This state is maintained in host byte order. The
- fetch/store register functions must translate between host
- byte order and the target processor byte order.
- Keeping this data in target byte order simplifies the register
- read/write functions. Keeping this data in native order improves
- the performance of the simulator. Simulation speed is deemed more
- important. */
-/* TODO: Should be moved to sim-main.h:sim_cpu. */
-
-/* The ordering of the mcore_regset structure is matched in the
- gdb/config/mcore/tm-mcore.h file in the REGISTER_NAMES macro. */
-struct mcore_regset
-{
- word gregs [16]; /* primary registers */
- word alt_gregs [16]; /* alt register file */
- word cregs [32]; /* control registers */
- int ticks;
- int stalls;
- int cycles;
- int insts;
- word * active_gregs;
-};
-
-union
-{
- struct mcore_regset asregs;
- word asints [1]; /* but accessed larger... */
-} cpu;
-
-#define LAST_VALID_CREG 32 /* only 0..12 implemented */
-#define NUM_MCORE_REGS (16 + 16 + LAST_VALID_CREG + 1)
-
static int memcycles = 1;
-#define gr asregs.active_gregs
-#define cr asregs.cregs
-#define sr asregs.cregs[0]
-#define vbr asregs.cregs[1]
-#define esr asregs.cregs[2]
-#define fsr asregs.cregs[3]
-#define epc asregs.cregs[4]
-#define fpc asregs.cregs[5]
-#define ss0 asregs.cregs[6]
-#define ss1 asregs.cregs[7]
-#define ss2 asregs.cregs[8]
-#define ss3 asregs.cregs[9]
-#define ss4 asregs.cregs[10]
-#define gcr asregs.cregs[11]
-#define gsr asregs.cregs[12]
+#define gr cpu->active_gregs
+#define cr cpu->regs.cregs
+#define sr cr[0]
+#define vbr cr[1]
+#define esr cr[2]
+#define fsr cr[3]
+#define epc cr[4]
+#define fpc cr[5]
+#define ss0 cr[6]
+#define ss1 cr[7]
+#define ss2 cr[8]
+#define ss3 cr[9]
+#define ss4 cr[10]
+#define gcr cr[11]
+#define gsr cr[12]
/* maniuplate the carry bit */
-#define C_ON() (cpu.sr & 1)
-#define C_VALUE() (cpu.sr & 1)
-#define C_OFF() ((cpu.sr & 1) == 0)
-#define SET_C() {cpu.sr |= 1;}
-#define CLR_C() {cpu.sr &= 0xfffffffe;}
-#define NEW_C(v) {CLR_C(); cpu.sr |= ((v) & 1);}
-
-#define SR_AF() ((cpu.sr >> 1) & 1)
+#define C_ON() (sr & 1)
+#define C_VALUE() (sr & 1)
+#define C_OFF() ((sr & 1) == 0)
+#define SET_C() {sr |= 1;}
+#define CLR_C() {sr &= 0xfffffffe;}
+#define NEW_C(v) {CLR_C(); sr |= ((v) & 1);}
+
+#define SR_AF() ((sr >> 1) & 1)
+static void set_active_regs (SIM_CPU *cpu)
+{
+ if (SR_AF())
+ cpu->active_gregs = cpu->regs.alt_gregs;
+ else
+ cpu->active_gregs = cpu->regs.gregs;
+}
#define TRAPCODE 1 /* r1 holds which function we want */
#define PARM1 2 /* first parameter */
#define DEFAULT_MEMORY_SIZE 0x800000
static void
-set_initial_gprs (SIM_CPU *scpu)
+set_initial_gprs (SIM_CPU *cpu)
{
- int i;
- long space;
-
/* Set up machine just out of reset. */
- CPU_PC_SET (scpu, 0);
- cpu.sr = 0;
+ CPU_PC_SET (cpu, 0);
+ sr = 0;
/* Clean out the GPRs and alternate GPRs. */
- for (i = 0; i < 16; i++)
- {
- cpu.asregs.gregs[i] = 0;
- cpu.asregs.alt_gregs[i] = 0;
- }
+ memset (&cpu->regs.gregs, 0, sizeof(cpu->regs.gregs));
+ memset (&cpu->regs.alt_gregs, 0, sizeof(cpu->regs.alt_gregs));
/* Make our register set point to the right place. */
- if (SR_AF())
- cpu.asregs.active_gregs = &cpu.asregs.alt_gregs[0];
- else
- cpu.asregs.active_gregs = &cpu.asregs.gregs[0];
+ set_active_regs (cpu);
/* ABI specifies initial values for these registers. */
- cpu.gr[0] = DEFAULT_MEMORY_SIZE - 4;
+ gr[0] = DEFAULT_MEMORY_SIZE - 4;
/* dac fix, the stack address must be 8-byte aligned! */
- cpu.gr[0] = cpu.gr[0] - cpu.gr[0] % 8;
- cpu.gr[PARM1] = 0;
- cpu.gr[PARM2] = 0;
- cpu.gr[PARM3] = 0;
- cpu.gr[PARM4] = cpu.gr[0];
+ gr[0] = gr[0] - gr[0] % 8;
+ gr[PARM1] = 0;
+ gr[PARM2] = 0;
+ gr[PARM3] = 0;
+ gr[PARM4] = gr[0];
}
/* Simulate a monitor trap. */
static void
-handle_trap1 (SIM_DESC sd)
+handle_trap1 (SIM_DESC sd, SIM_CPU *cpu)
{
/* XXX: We don't pass back the actual errno value. */
- cpu.gr[RET1] = sim_syscall (STATE_CPU (sd, 0), cpu.gr[TRAPCODE],
- cpu.gr[PARM1], cpu.gr[PARM2], cpu.gr[PARM3],
- cpu.gr[PARM4]);
+ gr[RET1] = sim_syscall (cpu, gr[TRAPCODE], gr[PARM1], gr[PARM2], gr[PARM3],
+ gr[PARM4]);
}
static void
-process_stub (SIM_DESC sd, int what)
+process_stub (SIM_DESC sd, SIM_CPU *cpu, int what)
{
/* These values should match those in libgloss/mcore/syscalls.s. */
switch (what)
case 10: /* _unlink */
case 19: /* _lseek */
case 43: /* _times */
- cpu.gr [TRAPCODE] = what;
- handle_trap1 (sd);
+ gr[TRAPCODE] = what;
+ handle_trap1 (sd, cpu);
break;
default:
}
static void
-util (SIM_DESC sd, SIM_CPU *scpu, unsigned what)
+util (SIM_DESC sd, SIM_CPU *cpu, unsigned what)
{
switch (what)
{
case 0: /* exit */
- sim_engine_halt (sd, scpu, NULL, scpu->pc, sim_exited, cpu.gr[PARM1]);
+ sim_engine_halt (sd, cpu, NULL, cpu->regs.pc, sim_exited, gr[PARM1]);
break;
case 1: /* printf */
break;
case 3: /* utime */
- cpu.gr[RET1] = cpu.asregs.insts;
+ gr[RET1] = cpu->insts;
break;
case 0xFF:
- process_stub (sd, cpu.gr[1]);
+ process_stub (sd, cpu, gr[1]);
break;
default:
#define IMM5 ((inst >> 4) & 0x1F)
#define IMM4 ((inst) & 0xF)
-#define rbat(X) sim_core_read_1 (scpu, 0, read_map, X)
-#define rhat(X) sim_core_read_2 (scpu, 0, read_map, X)
-#define rlat(X) sim_core_read_4 (scpu, 0, read_map, X)
-#define wbat(X, D) sim_core_write_1 (scpu, 0, write_map, X, D)
-#define what(X, D) sim_core_write_2 (scpu, 0, write_map, X, D)
-#define wlat(X, D) sim_core_write_4 (scpu, 0, write_map, X, D)
+#define rbat(X) sim_core_read_1 (cpu, 0, read_map, X)
+#define rhat(X) sim_core_read_2 (cpu, 0, read_map, X)
+#define rlat(X) sim_core_read_4 (cpu, 0, read_map, X)
+#define wbat(X, D) sim_core_write_1 (cpu, 0, write_map, X, D)
+#define what(X, D) sim_core_write_2 (cpu, 0, write_map, X, D)
+#define wlat(X, D) sim_core_write_4 (cpu, 0, write_map, X, D)
static int tracing = 0;
#define ILLEGAL() \
- sim_engine_halt (sd, scpu, NULL, pc, sim_stopped, SIM_SIGILL)
+ sim_engine_halt (sd, cpu, NULL, pc, sim_stopped, SIM_SIGILL)
static void
-step_once (SIM_DESC sd, SIM_CPU *scpu)
+step_once (SIM_DESC sd, SIM_CPU *cpu)
{
int needfetch;
word ibuf;
word WLhash;
#endif
- pc = CPU_PC_GET (scpu);
+ pc = CPU_PC_GET (cpu);
/* Fetch the initial instructions that we'll decode. */
ibuf = rlat (pc & 0xFFFFFFFC);
insts = 0;
/* make our register set point to the right place */
- if (SR_AF ())
- cpu.asregs.active_gregs = & cpu.asregs.alt_gregs[0];
- else
- cpu.asregs.active_gregs = & cpu.asregs.gregs[0];
+ set_active_regs (cpu);
#ifdef WATCHFUNCTIONS
/* make a hash to speed exec loop, hope it's nonzero */
if ((WLincyc == 1) && (pc == WLendpc))
{
- cycs = (cpu.asregs.cycles + (insts + bonus_cycles +
+ cycs = (cpu->cycles + (insts + bonus_cycles +
(memops * memcycles)) - WLbcyc);
if (WLcnts[WLW] == 1)
if (pc == WL[w])
{
WLcnts[w]++;
- WLbcyc = cpu.asregs.cycles + insts
+ WLbcyc = cpu->cycles + insts
+ bonus_cycles + (memops * memcycles);
- WLendpc = cpu.gr[15];
+ WLendpc = gr[15];
WLincyc = 1;
WLW = w;
break;
{
case 0x0: /* bkpt */
pc -= 2;
- sim_engine_halt (sd, scpu, NULL, pc - 2,
+ sim_engine_halt (sd, cpu, NULL, pc - 2,
sim_stopped, SIM_SIGTRAP);
break;
break;
case 0x2: /* rte */
- pc = cpu.epc;
- cpu.sr = cpu.esr;
+ pc = epc;
+ sr = esr;
needfetch = 1;
- if (SR_AF ())
- cpu.asregs.active_gregs = & cpu.asregs.alt_gregs[0];
- else
- cpu.asregs.active_gregs = & cpu.asregs.gregs[0];
+ set_active_regs (cpu);
break;
case 0x3: /* rfi */
- pc = cpu.fpc;
- cpu.sr = cpu.fsr;
+ pc = fpc;
+ sr = fsr;
needfetch = 1;
- if (SR_AF ())
- cpu.asregs.active_gregs = &cpu.asregs.alt_gregs[0];
- else
- cpu.asregs.active_gregs = &cpu.asregs.gregs[0];
+ set_active_regs (cpu);
break;
case 0x4: /* stop */
case 0x8: /* trap 0 */
case 0xA: /* trap 2 */
case 0xB: /* trap 3 */
- sim_engine_halt (sd, scpu, NULL, pc,
+ sim_engine_halt (sd, cpu, NULL, pc,
sim_stopped, SIM_SIGTRAP);
break;
break;
case 0xF: /* trap 7 */
- sim_engine_halt (sd, scpu, NULL, pc, /* integer div-by-0 */
+ sim_engine_halt (sd, cpu, NULL, pc, /* integer div-by-0 */
sim_stopped, SIM_SIGTRAP);
break;
case 0x9: /* trap 1 */
- handle_trap1 (sd);
+ handle_trap1 (sd, cpu);
break;
}
break;
break;
case 0x2: /* mvc */
- cpu.gr[RD] = C_VALUE();
+ gr[RD] = C_VALUE();
break;
case 0x3: /* mvcv */
- cpu.gr[RD] = C_OFF();
+ gr[RD] = C_OFF();
break;
case 0x4: /* ldq */
{
- word addr = cpu.gr[RD];
+ word addr = gr[RD];
int regno = 4; /* always r4-r7 */
bonus_cycles++;
memops += 4;
do
{
- cpu.gr[regno] = rlat(addr);
+ gr[regno] = rlat (addr);
addr += 4;
regno++;
}
break;
case 0x5: /* stq */
{
- word addr = cpu.gr[RD];
+ word addr = gr[RD];
int regno = 4; /* always r4-r7 */
memops += 4;
bonus_cycles++;
do
{
- wlat(addr, cpu.gr[regno]);
+ wlat (addr, gr[regno]);
addr += 4;
regno++;
}
break;
case 0x6: /* ldm */
{
- word addr = cpu.gr[0];
+ word addr = gr[0];
int regno = RD;
/* bonus cycle is really only needed if
memops += 16-regno;
while (regno <= 0xF)
{
- cpu.gr[regno] = rlat(addr);
+ gr[regno] = rlat (addr);
addr += 4;
regno++;
}
break;
case 0x7: /* stm */
{
- word addr = cpu.gr[0];
+ word addr = gr[0];
int regno = RD;
/* this should be removed! */
memops += 16 - regno;
while (regno <= 0xF)
{
- wlat(addr, cpu.gr[regno]);
+ wlat (addr, gr[regno]);
addr += 4;
regno++;
}
break;
case 0x8: /* dect */
- cpu.gr[RD] -= C_VALUE();
+ gr[RD] -= C_VALUE();
break;
case 0x9: /* decf */
- cpu.gr[RD] -= C_OFF();
+ gr[RD] -= C_OFF();
break;
case 0xA: /* inct */
- cpu.gr[RD] += C_VALUE();
+ gr[RD] += C_VALUE();
break;
case 0xB: /* incf */
- cpu.gr[RD] += C_OFF();
+ gr[RD] += C_OFF();
break;
case 0xC: /* jmp */
- pc = cpu.gr[RD];
+ pc = gr[RD];
if (tracing && RD == 15)
fprintf (stderr, "Func return, r2 = %lxx, r3 = %lx\n",
- cpu.gr[2], cpu.gr[3]);
+ gr[2], gr[3]);
bonus_cycles++;
needfetch = 1;
break;
case 0xD: /* jsr */
- cpu.gr[15] = pc;
- pc = cpu.gr[RD];
+ gr[15] = pc;
+ pc = gr[RD];
bonus_cycles++;
needfetch = 1;
break;
case 0xE: /* ff1 */
{
word tmp, i;
- tmp = cpu.gr[RD];
+ tmp = gr[RD];
for (i = 0; !(tmp & 0x80000000) && i < 32; i++)
tmp <<= 1;
- cpu.gr[RD] = i;
+ gr[RD] = i;
}
break;
case 0xF: /* brev */
{
word tmp;
- tmp = cpu.gr[RD];
+ tmp = gr[RD];
tmp = ((tmp & 0xaaaaaaaa) >> 1) | ((tmp & 0x55555555) << 1);
tmp = ((tmp & 0xcccccccc) >> 2) | ((tmp & 0x33333333) << 2);
tmp = ((tmp & 0xf0f0f0f0) >> 4) | ((tmp & 0x0f0f0f0f) << 4);
tmp = ((tmp & 0xff00ff00) >> 8) | ((tmp & 0x00ff00ff) << 8);
- cpu.gr[RD] = ((tmp & 0xffff0000) >> 16) | ((tmp & 0x0000ffff) << 16);
+ gr[RD] = ((tmp & 0xffff0000) >> 16) | ((tmp & 0x0000ffff) << 16);
}
break;
}
switch RS
{
case 0x0: /* xtrb3 */
- cpu.gr[1] = (cpu.gr[RD]) & 0xFF;
- NEW_C (cpu.gr[RD] != 0);
+ gr[1] = (gr[RD]) & 0xFF;
+ NEW_C (gr[RD] != 0);
break;
case 0x1: /* xtrb2 */
- cpu.gr[1] = (cpu.gr[RD]>>8) & 0xFF;
- NEW_C (cpu.gr[RD] != 0);
+ gr[1] = (gr[RD]>>8) & 0xFF;
+ NEW_C (gr[RD] != 0);
break;
case 0x2: /* xtrb1 */
- cpu.gr[1] = (cpu.gr[RD]>>16) & 0xFF;
- NEW_C (cpu.gr[RD] != 0);
+ gr[1] = (gr[RD]>>16) & 0xFF;
+ NEW_C (gr[RD] != 0);
break;
case 0x3: /* xtrb0 */
- cpu.gr[1] = (cpu.gr[RD]>>24) & 0xFF;
- NEW_C (cpu.gr[RD] != 0);
+ gr[1] = (gr[RD]>>24) & 0xFF;
+ NEW_C (gr[RD] != 0);
break;
case 0x4: /* zextb */
- cpu.gr[RD] &= 0x000000FF;
+ gr[RD] &= 0x000000FF;
break;
case 0x5: /* sextb */
{
long tmp;
- tmp = cpu.gr[RD];
+ tmp = gr[RD];
tmp <<= 24;
tmp >>= 24;
- cpu.gr[RD] = tmp;
+ gr[RD] = tmp;
}
break;
case 0x6: /* zexth */
- cpu.gr[RD] &= 0x0000FFFF;
+ gr[RD] &= 0x0000FFFF;
break;
case 0x7: /* sexth */
{
long tmp;
- tmp = cpu.gr[RD];
+ tmp = gr[RD];
tmp <<= 16;
tmp >>= 16;
- cpu.gr[RD] = tmp;
+ gr[RD] = tmp;
}
break;
case 0x8: /* declt */
- --cpu.gr[RD];
- NEW_C ((long)cpu.gr[RD] < 0);
+ --gr[RD];
+ NEW_C ((long)gr[RD] < 0);
break;
case 0x9: /* tstnbz */
{
- word tmp = cpu.gr[RD];
+ word tmp = gr[RD];
NEW_C ((tmp & 0xFF000000) != 0 &&
(tmp & 0x00FF0000) != 0 && (tmp & 0x0000FF00) != 0 &&
(tmp & 0x000000FF) != 0);
}
break;
case 0xA: /* decgt */
- --cpu.gr[RD];
- NEW_C ((long)cpu.gr[RD] > 0);
+ --gr[RD];
+ NEW_C ((long)gr[RD] > 0);
break;
case 0xB: /* decne */
- --cpu.gr[RD];
- NEW_C ((long)cpu.gr[RD] != 0);
+ --gr[RD];
+ NEW_C ((long)gr[RD] != 0);
break;
case 0xC: /* clrt */
if (C_ON())
- cpu.gr[RD] = 0;
+ gr[RD] = 0;
break;
case 0xD: /* clrf */
if (C_OFF())
- cpu.gr[RD] = 0;
+ gr[RD] = 0;
break;
case 0xE: /* abs */
- if (cpu.gr[RD] & 0x80000000)
- cpu.gr[RD] = ~cpu.gr[RD] + 1;
+ if (gr[RD] & 0x80000000)
+ gr[RD] = ~gr[RD] + 1;
break;
case 0xF: /* not */
- cpu.gr[RD] = ~cpu.gr[RD];
+ gr[RD] = ~gr[RD];
break;
}
break;
case 0x02: /* movt */
if (C_ON())
- cpu.gr[RD] = cpu.gr[RS];
+ gr[RD] = gr[RS];
break;
case 0x03: /* mult */
/* consume 2 bits per cycle from rs, until rs is 0 */
{
- unsigned int t = cpu.gr[RS];
+ unsigned int t = gr[RS];
int ticks;
for (ticks = 0; t != 0 ; t >>= 2)
ticks++;
bonus_cycles += 2; /* min. is 3, so add 2, plus ticks above */
if (tracing)
fprintf (stderr, " mult %lx by %lx to give %lx",
- cpu.gr[RD], cpu.gr[RS], cpu.gr[RD] * cpu.gr[RS]);
- cpu.gr[RD] = cpu.gr[RD] * cpu.gr[RS];
+ gr[RD], gr[RS], gr[RD] * gr[RS]);
+ gr[RD] = gr[RD] * gr[RS];
break;
case 0x04: /* loopt */
if (C_ON())
bonus_cycles ++;
needfetch = 1;
}
- --cpu.gr[RS]; /* not RD! */
- NEW_C (((long)cpu.gr[RS]) > 0);
+ --gr[RS]; /* not RD! */
+ NEW_C (((long)gr[RS]) > 0);
break;
case 0x05: /* subu */
- cpu.gr[RD] -= cpu.gr[RS];
+ gr[RD] -= gr[RS];
break;
case 0x06: /* addc */
{
unsigned long tmp, a, b;
- a = cpu.gr[RD];
- b = cpu.gr[RS];
- cpu.gr[RD] = a + b + C_VALUE ();
+ a = gr[RD];
+ b = gr[RS];
+ gr[RD] = a + b + C_VALUE ();
tmp = iu_carry (a, b, C_VALUE ());
NEW_C (tmp);
}
case 0x07: /* subc */
{
unsigned long tmp, a, b;
- a = cpu.gr[RD];
- b = cpu.gr[RS];
- cpu.gr[RD] = a - b + C_VALUE () - 1;
+ a = gr[RD];
+ b = gr[RS];
+ gr[RD] = a - b + C_VALUE () - 1;
tmp = iu_carry (a,~b, C_VALUE ());
NEW_C (tmp);
}
break;
case 0x0A: /* movf */
if (C_OFF())
- cpu.gr[RD] = cpu.gr[RS];
+ gr[RD] = gr[RS];
break;
case 0x0B: /* lsr */
{
unsigned long dst, src;
- dst = cpu.gr[RD];
- src = cpu.gr[RS];
+ dst = gr[RD];
+ src = gr[RS];
/* We must not rely solely upon the native shift operations, since they
may not match the M*Core's behaviour on boundary conditions. */
dst = src > 31 ? 0 : dst >> src;
- cpu.gr[RD] = dst;
+ gr[RD] = dst;
}
break;
case 0x0C: /* cmphs */
- NEW_C ((unsigned long )cpu.gr[RD] >=
- (unsigned long)cpu.gr[RS]);
+ NEW_C ((unsigned long )gr[RD] >=
+ (unsigned long)gr[RS]);
break;
case 0x0D: /* cmplt */
- NEW_C ((long)cpu.gr[RD] < (long)cpu.gr[RS]);
+ NEW_C ((long)gr[RD] < (long)gr[RS]);
break;
case 0x0E: /* tst */
- NEW_C ((cpu.gr[RD] & cpu.gr[RS]) != 0);
+ NEW_C ((gr[RD] & gr[RS]) != 0);
break;
case 0x0F: /* cmpne */
- NEW_C (cpu.gr[RD] != cpu.gr[RS]);
+ NEW_C (gr[RD] != gr[RS]);
break;
case 0x10: case 0x11: /* mfcr */
{
unsigned r;
r = IMM5;
if (r <= LAST_VALID_CREG)
- cpu.gr[RD] = cpu.cr[r];
+ gr[RD] = cr[r];
else
ILLEGAL ();
}
break;
case 0x12: /* mov */
- cpu.gr[RD] = cpu.gr[RS];
+ gr[RD] = gr[RS];
if (tracing)
- fprintf (stderr, "MOV %lx into reg %d", cpu.gr[RD], RD);
+ fprintf (stderr, "MOV %lx into reg %d", gr[RD], RD);
break;
case 0x13: /* bgenr */
- if (cpu.gr[RS] & 0x20)
- cpu.gr[RD] = 0;
+ if (gr[RS] & 0x20)
+ gr[RD] = 0;
else
- cpu.gr[RD] = 1 << (cpu.gr[RS] & 0x1F);
+ gr[RD] = 1 << (gr[RS] & 0x1F);
break;
case 0x14: /* rsub */
- cpu.gr[RD] = cpu.gr[RS] - cpu.gr[RD];
+ gr[RD] = gr[RS] - gr[RD];
break;
case 0x15: /* ixw */
- cpu.gr[RD] += cpu.gr[RS]<<2;
+ gr[RD] += gr[RS]<<2;
break;
case 0x16: /* and */
- cpu.gr[RD] &= cpu.gr[RS];
+ gr[RD] &= gr[RS];
break;
case 0x17: /* xor */
- cpu.gr[RD] ^= cpu.gr[RS];
+ gr[RD] ^= gr[RS];
break;
case 0x18: case 0x19: /* mtcr */
unsigned r;
r = IMM5;
if (r <= LAST_VALID_CREG)
- cpu.cr[r] = cpu.gr[RD];
+ cr[r] = gr[RD];
else
ILLEGAL ();
/* we might have changed register sets... */
- if (SR_AF ())
- cpu.asregs.active_gregs = & cpu.asregs.alt_gregs[0];
- else
- cpu.asregs.active_gregs = & cpu.asregs.gregs[0];
+ set_active_regs (cpu);
}
break;
case 0x1A: /* asr */
/* We must not rely solely upon the native shift operations, since they
may not match the M*Core's behaviour on boundary conditions. */
- if (cpu.gr[RS] > 30)
- cpu.gr[RD] = ((long) cpu.gr[RD]) < 0 ? -1 : 0;
+ if (gr[RS] > 30)
+ gr[RD] = ((long) gr[RD]) < 0 ? -1 : 0;
else
- cpu.gr[RD] = (long) cpu.gr[RD] >> cpu.gr[RS];
+ gr[RD] = (long) gr[RD] >> gr[RS];
break;
case 0x1B: /* lsl */
/* We must not rely solely upon the native shift operations, since they
may not match the M*Core's behaviour on boundary conditions. */
- cpu.gr[RD] = cpu.gr[RS] > 31 ? 0 : cpu.gr[RD] << cpu.gr[RS];
+ gr[RD] = gr[RS] > 31 ? 0 : gr[RD] << gr[RS];
break;
case 0x1C: /* addu */
- cpu.gr[RD] += cpu.gr[RS];
+ gr[RD] += gr[RS];
break;
case 0x1D: /* ixh */
- cpu.gr[RD] += cpu.gr[RS] << 1;
+ gr[RD] += gr[RS] << 1;
break;
case 0x1E: /* or */
- cpu.gr[RD] |= cpu.gr[RS];
+ gr[RD] |= gr[RS];
break;
case 0x1F: /* andn */
- cpu.gr[RD] &= ~cpu.gr[RS];
+ gr[RD] &= ~gr[RS];
break;
case 0x20: case 0x21: /* addi */
- cpu.gr[RD] =
- cpu.gr[RD] + (IMM5 + 1);
+ gr[RD] =
+ gr[RD] + (IMM5 + 1);
break;
case 0x22: case 0x23: /* cmplti */
{
int tmp = (IMM5 + 1);
- if (cpu.gr[RD] < tmp)
+ if (gr[RD] < tmp)
{
SET_C();
}
}
break;
case 0x24: case 0x25: /* subi */
- cpu.gr[RD] =
- cpu.gr[RD] - (IMM5 + 1);
+ gr[RD] =
+ gr[RD] - (IMM5 + 1);
break;
case 0x26: case 0x27: /* illegal */
ILLEGAL ();
break;
case 0x28: case 0x29: /* rsubi */
- cpu.gr[RD] =
- IMM5 - cpu.gr[RD];
+ gr[RD] =
+ IMM5 - gr[RD];
break;
case 0x2A: case 0x2B: /* cmpnei */
- if (cpu.gr[RD] != IMM5)
+ if (gr[RD] != IMM5)
{
SET_C();
}
int rxnlz, r1nlz;
unsigned int rx, r1;
- rx = cpu.gr[RD];
- r1 = cpu.gr[1];
+ rx = gr[RD];
+ r1 = gr[1];
exe = 0;
/* unsigned divide */
- cpu.gr[RD] = (word) ((unsigned int) cpu.gr[RD] / (unsigned int)cpu.gr[1] );
+ gr[RD] = (word) ((unsigned int) gr[RD] / (unsigned int)gr[1] );
/* compute bonus_cycles for divu */
for (r1nlz = 0; ((r1 & 0x80000000) == 0) && (r1nlz < 32); r1nlz ++)
{
/* bmaski */
if (imm == 0)
- cpu.gr[RD] = -1;
+ gr[RD] = -1;
else
- cpu.gr[RD] = (1 << imm) - 1;
+ gr[RD] = (1 << imm) - 1;
}
else
{
}
break;
case 0x2E: case 0x2F: /* andi */
- cpu.gr[RD] = cpu.gr[RD] & IMM5;
+ gr[RD] = gr[RD] & IMM5;
break;
case 0x30: case 0x31: /* bclri */
- cpu.gr[RD] = cpu.gr[RD] & ~(1<<IMM5);
+ gr[RD] = gr[RD] & ~(1<<IMM5);
break;
case 0x32: case 0x33: /* bgeni, divs */
{
signed int rx, r1;
/* compute bonus_cycles for divu */
- rx = cpu.gr[RD];
- r1 = cpu.gr[1];
+ rx = gr[RD];
+ r1 = gr[1];
exe = 0;
if (((rx < 0) && (r1 > 0)) || ((rx >= 0) && (r1 < 0)))
r1 = abs (r1);
/* signed divide, general registers are of type int, so / op is OK */
- cpu.gr[RD] = cpu.gr[RD] / cpu.gr[1];
+ gr[RD] = gr[RD] / gr[1];
for (r1nlz = 0; ((r1 & 0x80000000) == 0) && (r1nlz < 32) ; r1nlz ++ )
r1 = r1 << 1;
else if (imm >= 7)
{
/* bgeni */
- cpu.gr[RD] = (1 << IMM5);
+ gr[RD] = (1 << IMM5);
}
else
{
break;
}
case 0x34: case 0x35: /* bseti */
- cpu.gr[RD] = cpu.gr[RD] | (1 << IMM5);
+ gr[RD] = gr[RD] | (1 << IMM5);
break;
case 0x36: case 0x37: /* btsti */
- NEW_C (cpu.gr[RD] >> IMM5);
+ NEW_C (gr[RD] >> IMM5);
break;
case 0x38: case 0x39: /* xsr, rotli */
{
unsigned imm = IMM5;
- unsigned long tmp = cpu.gr[RD];
+ unsigned long tmp = gr[RD];
if (imm == 0)
{
word cbit;
cbit = C_VALUE();
NEW_C (tmp);
- cpu.gr[RD] = (cbit << 31) | (tmp >> 1);
+ gr[RD] = (cbit << 31) | (tmp >> 1);
}
else
- cpu.gr[RD] = (tmp << imm) | (tmp >> (32 - imm));
+ gr[RD] = (tmp << imm) | (tmp >> (32 - imm));
}
break;
case 0x3A: case 0x3B: /* asrc, asri */
{
unsigned imm = IMM5;
- long tmp = cpu.gr[RD];
+ long tmp = gr[RD];
if (imm == 0)
{
NEW_C (tmp);
- cpu.gr[RD] = tmp >> 1;
+ gr[RD] = tmp >> 1;
}
else
- cpu.gr[RD] = tmp >> imm;
+ gr[RD] = tmp >> imm;
}
break;
case 0x3C: case 0x3D: /* lslc, lsli */
{
unsigned imm = IMM5;
- unsigned long tmp = cpu.gr[RD];
+ unsigned long tmp = gr[RD];
if (imm == 0)
{
NEW_C (tmp >> 31);
- cpu.gr[RD] = tmp << 1;
+ gr[RD] = tmp << 1;
}
else
- cpu.gr[RD] = tmp << imm;
+ gr[RD] = tmp << imm;
}
break;
case 0x3E: case 0x3F: /* lsrc, lsri */
{
unsigned imm = IMM5;
- unsigned long tmp = cpu.gr[RD];
+ unsigned long tmp = gr[RD];
if (imm == 0)
{
NEW_C (tmp);
- cpu.gr[RD] = tmp >> 1;
+ gr[RD] = tmp >> 1;
}
else
- cpu.gr[RD] = tmp >> imm;
+ gr[RD] = tmp >> imm;
}
break;
case 0x40: case 0x41: case 0x42: case 0x43:
ILLEGAL ();
break;
case 0x50:
- util (sd, scpu, inst & 0xFF);
+ util (sd, cpu, inst & 0xFF);
break;
case 0x51: case 0x52: case 0x53:
case 0x54: case 0x55: case 0x56: case 0x57:
break;
case 0x60: case 0x61: case 0x62: case 0x63: /* movi */
case 0x64: case 0x65: case 0x66: case 0x67:
- cpu.gr[RD] = (inst >> 4) & 0x7F;
+ gr[RD] = (inst >> 4) & 0x7F;
break;
case 0x68: case 0x69: case 0x6A: case 0x6B:
case 0x6C: case 0x6D: case 0x6E: case 0x6F: /* illegal */
case 0x74: case 0x75: case 0x76: case 0x77:
case 0x78: case 0x79: case 0x7A: case 0x7B:
case 0x7C: case 0x7D: case 0x7E: /* lrw */
- cpu.gr[RX] = rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC);
+ gr[RX] = rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC);
if (tracing)
fprintf (stderr, "LRW of 0x%x from 0x%lx to reg %d",
rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC),
memops++;
break;
case 0x7F: /* jsri */
- cpu.gr[15] = pc;
+ gr[15] = pc;
if (tracing)
fprintf (stderr,
"func call: r2 = %lx r3 = %lx r4 = %lx r5 = %lx r6 = %lx r7 = %lx\n",
- cpu.gr[2], cpu.gr[3], cpu.gr[4], cpu.gr[5], cpu.gr[6], cpu.gr[7]);
+ gr[2], gr[3], gr[4], gr[5], gr[6], gr[7]);
case 0x70: /* jmpi */
pc = rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC);
memops++;
case 0x84: case 0x85: case 0x86: case 0x87:
case 0x88: case 0x89: case 0x8A: case 0x8B:
case 0x8C: case 0x8D: case 0x8E: case 0x8F: /* ld */
- cpu.gr[RX] = rlat (cpu.gr[RD] + ((inst >> 2) & 0x003C));
+ gr[RX] = rlat (gr[RD] + ((inst >> 2) & 0x003C));
if (tracing)
fprintf (stderr, "load reg %d from 0x%lx with 0x%lx",
RX,
- cpu.gr[RD] + ((inst >> 2) & 0x003C), cpu.gr[RX]);
+ gr[RD] + ((inst >> 2) & 0x003C), gr[RX]);
memops++;
break;
case 0x90: case 0x91: case 0x92: case 0x93:
case 0x94: case 0x95: case 0x96: case 0x97:
case 0x98: case 0x99: case 0x9A: case 0x9B:
case 0x9C: case 0x9D: case 0x9E: case 0x9F: /* st */
- wlat (cpu.gr[RD] + ((inst >> 2) & 0x003C), cpu.gr[RX]);
+ wlat (gr[RD] + ((inst >> 2) & 0x003C), gr[RX]);
if (tracing)
fprintf (stderr, "store reg %d (containing 0x%lx) to 0x%lx",
- RX, cpu.gr[RX],
- cpu.gr[RD] + ((inst >> 2) & 0x003C));
+ RX, gr[RX],
+ gr[RD] + ((inst >> 2) & 0x003C));
memops++;
break;
case 0xA0: case 0xA1: case 0xA2: case 0xA3:
case 0xA4: case 0xA5: case 0xA6: case 0xA7:
case 0xA8: case 0xA9: case 0xAA: case 0xAB:
case 0xAC: case 0xAD: case 0xAE: case 0xAF: /* ld.b */
- cpu.gr[RX] = rbat (cpu.gr[RD] + RS);
+ gr[RX] = rbat (gr[RD] + RS);
memops++;
break;
case 0xB0: case 0xB1: case 0xB2: case 0xB3:
case 0xB4: case 0xB5: case 0xB6: case 0xB7:
case 0xB8: case 0xB9: case 0xBA: case 0xBB:
case 0xBC: case 0xBD: case 0xBE: case 0xBF: /* st.b */
- wbat (cpu.gr[RD] + RS, cpu.gr[RX]);
+ wbat (gr[RD] + RS, gr[RX]);
memops++;
break;
case 0xC0: case 0xC1: case 0xC2: case 0xC3:
case 0xC4: case 0xC5: case 0xC6: case 0xC7:
case 0xC8: case 0xC9: case 0xCA: case 0xCB:
case 0xCC: case 0xCD: case 0xCE: case 0xCF: /* ld.h */
- cpu.gr[RX] = rhat (cpu.gr[RD] + ((inst >> 3) & 0x001E));
+ gr[RX] = rhat (gr[RD] + ((inst >> 3) & 0x001E));
memops++;
break;
case 0xD0: case 0xD1: case 0xD2: case 0xD3:
case 0xD4: case 0xD5: case 0xD6: case 0xD7:
case 0xD8: case 0xD9: case 0xDA: case 0xDB:
case 0xDC: case 0xDD: case 0xDE: case 0xDF: /* st.h */
- what (cpu.gr[RD] + ((inst >> 3) & 0x001E), cpu.gr[RX]);
+ what (gr[RD] + ((inst >> 3) & 0x001E), gr[RX]);
memops++;
break;
case 0xE8: case 0xE9: case 0xEA: case 0xEB:
case 0xF8: case 0xF9: case 0xFA: case 0xFB:
case 0xFC: case 0xFD: case 0xFE: case 0xFF: /* bsr */
- cpu.gr[15] = pc;
+ gr[15] = pc;
case 0xF0: case 0xF1: case 0xF2: case 0xF3:
case 0xF4: case 0xF5: case 0xF6: case 0xF7: /* br */
{
}
/* Hide away the things we've cached while executing. */
- CPU_PC_SET (scpu, pc);
- cpu.asregs.insts += insts; /* instructions done ... */
- cpu.asregs.cycles += insts; /* and each takes a cycle */
- cpu.asregs.cycles += bonus_cycles; /* and extra cycles for branches */
- cpu.asregs.cycles += memops * memcycles; /* and memop cycle delays */
+ CPU_PC_SET (cpu, pc);
+ cpu->insts += insts; /* instructions done ... */
+ cpu->cycles += insts; /* and each takes a cycle */
+ cpu->cycles += bonus_cycles; /* and extra cycles for branches */
+ cpu->cycles += memops * memcycles; /* and memop cycle delays */
}
void
int nr_cpus, /* ignore */
int siggnal) /* ignore */
{
- sim_cpu *scpu;
+ sim_cpu *cpu;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
- scpu = STATE_CPU (sd, 0);
+ cpu = STATE_CPU (sd, 0);
while (1)
{
- step_once (sd, scpu);
+ step_once (sd, cpu);
if (sim_events_tick (sd))
sim_events_process (sd);
}
}
static int
-mcore_reg_store (SIM_CPU *scpu, int rn, unsigned char *memory, int length)
+mcore_reg_store (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
if (rn < NUM_MCORE_REGS && rn >= 0)
{
/* misalignment safe */
ival = mcore_extract_unsigned_integer (memory, 4);
- cpu.asints[rn] = ival;
+ cpu->asints[rn] = ival;
}
return 4;
}
static int
-mcore_reg_fetch (SIM_CPU *scpu, int rn, unsigned char *memory, int length)
+mcore_reg_fetch (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
if (rn < NUM_MCORE_REGS && rn >= 0)
{
if (length == 4)
{
- long ival = cpu.asints[rn];
+ long ival = cpu->asints[rn];
/* misalignment-safe */
mcore_store_unsigned_integer (memory, 4, ival);
void
sim_info (SIM_DESC sd, int verbose)
{
+ SIM_CPU *cpu = STATE_CPU (sd, 0);
#ifdef WATCHFUNCTIONS
int w, wcyc;
#endif
- double virttime = cpu.asregs.cycles / 36.0e6;
+ double virttime = cpu->cycles / 36.0e6;
host_callback *callback = STATE_CALLBACK (sd);
callback->printf_filtered (callback, "\n\n# instructions executed %10d\n",
- cpu.asregs.insts);
+ cpu->insts);
callback->printf_filtered (callback, "# cycles %10d\n",
- cpu.asregs.cycles);
+ cpu->cycles);
callback->printf_filtered (callback, "# pipeline stalls %10d\n",
- cpu.asregs.stalls);
+ cpu->stalls);
callback->printf_filtered (callback, "# virtual time taken %10.4f\n",
virttime);
static sim_cia
mcore_pc_get (sim_cpu *cpu)
{
- return cpu->pc;
+ return cpu->regs.pc;
}
static void
mcore_pc_set (sim_cpu *cpu, sim_cia pc)
{
- cpu->pc = pc;
+ cpu->regs.pc = pc;
}
static void
}
SIM_DESC
-sim_open (SIM_OPEN_KIND kind, host_callback *cb, struct bfd *abfd, char **argv)
+sim_open (SIM_OPEN_KIND kind, host_callback *cb,
+ struct bfd *abfd, char * const *argv)
{
int i;
SIM_DESC sd = sim_state_alloc (kind, cb);
return 0;
}
- /* getopt will print the error message so we just have to exit if this fails.
- FIXME: Hmmm... in the case of gdb we need getopt to call
- print_filtered. */
+ /* The parser will print an error message for us, so we silently return. */
if (sim_parse_args (sd, argv) != SIM_RC_OK)
{
free_state (sd);
}
SIM_RC
-sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd, char **argv, char **env)
+sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd,
+ char * const *argv, char * const *env)
{
- SIM_CPU *scpu = STATE_CPU (sd, 0);
+ SIM_CPU *cpu = STATE_CPU (sd, 0);
char ** avp;
int nargs = 0;
int nenv = 0;
/* Set the initial register set. */
- set_initial_gprs (scpu);
+ set_initial_gprs (cpu);
hi_stack = DEFAULT_MEMORY_SIZE - 4;
- CPU_PC_SET (scpu, bfd_get_start_address (prog_bfd));
+ CPU_PC_SET (cpu, bfd_get_start_address (prog_bfd));
/* Calculate the argument and environment strings. */
s_length = 0;
/* Claim some memory for the pointers and strings. */
pointers = hi_stack - sizeof(word) * (nenv+1+nargs+1);
pointers &= ~3; /* must be 4-byte aligned */
- cpu.gr[0] = pointers;
+ gr[0] = pointers;
- strings = cpu.gr[0] - s_length;
+ strings = gr[0] - s_length;
strings &= ~3; /* want to make it 4-byte aligned */
- cpu.gr[0] = strings;
+ gr[0] = strings;
/* dac fix, the stack address must be 8-byte aligned! */
- cpu.gr[0] = cpu.gr[0] - cpu.gr[0] % 8;
+ gr[0] = gr[0] - gr[0] % 8;
/* Loop through the arguments and fill them in. */
- cpu.gr[PARM1] = nargs;
+ gr[PARM1] = nargs;
if (nargs == 0)
{
/* No strings to fill in. */
- cpu.gr[PARM2] = 0;
+ gr[PARM2] = 0;
}
else
{
- cpu.gr[PARM2] = pointers;
+ gr[PARM2] = pointers;
avp = argv;
while (avp && *avp)
{
/* Copy the string. */
l = strlen (* avp) + 1;
- sim_core_write_buffer (sd, scpu, write_map, *avp, strings, l);
+ sim_core_write_buffer (sd, cpu, write_map, *avp, strings, l);
/* Bump the pointers. */
avp++;
if (nenv == 0)
{
/* No strings to fill in. */
- cpu.gr[PARM3] = 0;
+ gr[PARM3] = 0;
}
else
{
- cpu.gr[PARM3] = pointers;
+ gr[PARM3] = pointers;
avp = env;
while (avp && *avp)
/* Copy the string. */
l = strlen (* avp) + 1;
- sim_core_write_buffer (sd, scpu, write_map, *avp, strings, l);
+ sim_core_write_buffer (sd, cpu, write_map, *avp, strings, l);
/* Bump the pointers. */
avp++;
projects / deliverable / binutils-gdb.git / blobdiff