* AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+#include "config.h"
+
#include <signal.h>
-#include "sysdep.h"
-#include <sys/times.h>
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
#include <sys/param.h>
-
+#include "wait.h"
+#include "ansidecl.h"
+#include "callback.h"
+#include "remote-sim.h"
+#include "bfd.h"
int debug;
#define X(op, size) op*4+size
-#define SP (HMODE ? SL:SW)
+#define SP (h8300hmode ? SL:SW)
#define SB 0
#define SW 1
#define SL 2
#endif
#ifndef SEXTCHAR
-#define SEXTCHAR(x) ((x & 0x80) ? (x | ~0xff):x)
+#define SEXTCHAR(x) ((x & 0x80) ? (x | ~0xff): x & 0xff)
#endif
#define UEXTCHAR(x) ((x) & 0xff)
static cpu_state_type cpu;
-int HMODE = 1;
+int h8300hmode = 0;
+int h8300smode = 0;
+
+static int memory_size;
static int
get_now ()
{
- struct tms b;
- times (&b);
- return b.tms_utime + b.tms_stime;
+#ifndef WIN32
+ return time (0);
+#endif
+ return 0;
}
static int
now_persec ()
{
- return 50;
+ return 1;
}
case L_32:
return SL;
case L_P:
- return HMODE ? SL : SW;
+ return h8300hmode ? SL : SW;
}
}
switch (x / 4)
{
case OP_DISP:
- if (rn == 8)
+ if (rn == 8)
{
- return X(OP_IMM,SP);
+ return X (OP_IMM, SP);
}
- return X(OP_REG,SP);
-
+ return X (OP_REG, SP);
+
case OP_MEM:
return X (OP_MEM, SP);
int rdisp = 0;
int abs = 0;
int plen = 0;
+ int bit = 0;
struct h8_opcode *q = h8_opcodes;
int size = 0;
thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf);
- if (looking_for < 16)
+ if (looking_for < 16 && looking_for >= 0)
{
-
if (looking_for != thisnib)
goto fail;
}
else
{
-
if ((int) looking_for & (int) B31)
{
if (!(((int) thisnib & 0x8) != 0))
looking_for = (op_type) ((int) looking_for & ~(int)
B31);
thisnib &= 0x7;
-
}
if ((int) looking_for & (int) B30)
{
}
if (looking_for & DBIT)
{
- if ((looking_for & 5) != (thisnib &5)) goto fail;
+ if ((looking_for & 5) != (thisnib & 5))
+ goto fail;
abs = (thisnib & 0x8) ? 2 : 1;
}
else if (looking_for & (REG | IND | INC | DEC))
{
abs = (data[len >> 1]) * 256 + data[(len + 2) >> 1];
plen = 16;
- if (looking_for & (PCREL|DISP))
+ if (looking_for & (PCREL | DISP))
{
abs = (short) (abs);
}
| (data[2] << 8)
| (data[3]);
}
+ else if (looking_for & MEMIND)
+ {
+ abs = data[1];
+ }
else if (looking_for & L_32)
{
int i = len >> 1;
| (data[i + 3]);
plen = 32;
-
}
else if (looking_for & L_24)
{
int i = len >> 1;
- abs = (data[i] << 16) | (data[i + 1] << 8) | (data[i +
- 2]);
+ abs = (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]);
plen = 24;
}
else if (looking_for & IGNORE)
{
-
+ /* nothing to do */
}
else if (looking_for & DISPREG)
{
{
abs = SEXTCHAR (data[len >> 1]);
}
- else
+ else if (looking_for & ABS8MEM)
+ {
+ plen = 8;
+ abs = h8300hmode ? ~0xff0000ff : ~0xffff00ff;
+ abs |= data[len >> 1] & 0xff ;
+ }
+ else
{
abs = data[len >> 1] & 0xff;
}
{
plen = 3;
- abs = thisnib;
+ bit = thisnib;
}
else if (looking_for == E)
{
op_type *args = q->args.nib;
int hadone = 0;
-
while (*args != E)
{
int x = *args;
p = &(dst->src);
}
-
- if (x & (IMM | KBIT | DBIT))
+ if (x & (L_3))
+ {
+ p->type = X (OP_IMM, size);
+ p->literal = bit;
+ }
+ else if (x & (IMM | KBIT | DBIT))
{
p->type = X (OP_IMM, size);
p->literal = abs;
}
else if (x & REG)
{
- /*
- Reset the size, some
- ops (like mul) have two sizes */
-
+ /* Reset the size, some
+ ops (like mul) have two sizes */
+
size = bitfrom (x);
p->type = X (OP_REG, size);
p->reg = rn;
p->reg = rn & 0x7;
p->literal = 0;
}
- else if (x & (ABS | ABSJMP | ABSMOV))
+ else if (x & (ABS | ABSJMP | ABS8MEM))
{
p->type = X (OP_DISP, size);
p->literal = abs;
{
p->type = X (OP_PCREL, size);
p->literal = abs + addr + 2;
+ if (x & L_16)
+ p->literal += 2;
}
else if (x & ABSJMP)
{
else
printf ("Hmmmm %x", x);
-
args++;
}
}
/*
- * But a jmp or a jsr gets
- * automagically lvalued, since we
- * branch to their address not their
- * contents
- */
+ * But a jmp or a jsr gets
+ * automagically lvalued, since we
+ * branch to their address not their
+ * contents
+ */
if (q->how == O (O_JSR, SB)
|| q->how == O (O_JMP, SB))
{
dst->src.type = lvalue (dst->src.type, dst->src.reg);
}
-
if (dst->dst.type == -1)
dst->dst = dst->src;
-
+
dst->opcode = q->how;
dst->cycles = q->time;
/* And a jsr to 0xc4 is turned into a magic trap */
-
- if (dst->opcode == O(O_JSR, SB))
+
+ if (dst->opcode == O (O_JSR, SB))
{
- if(dst->src.literal == 0xc4)
+ if (dst->src.literal == 0xc4)
{
- dst->opcode = O(O_SYSCALL,SB);
+ dst->opcode = O (O_SYSCALL, SB);
}
}
-
+
dst->next_pc = addr + len / 2;
return;
}
printf ("Dont understand %x \n", looking_for);
}
}
-
+
len++;
nib++;
}
-
+
fail:
q++;
}
-
+
dst->opcode = O (O_ILL, SB);
}
compile (pc)
{
int idx;
-
+
/* find the next cache entry to use */
-
+
idx = cpu.cache_top + 1;
cpu.compiles++;
if (idx >= cpu.csize)
idx = 1;
}
cpu.cache_top = idx;
-
+
/* Throw away its old meaning */
cpu.cache_idx[cpu.cache[idx].oldpc] = 0;
-
+
/* set to new address */
cpu.cache[idx].oldpc = pc;
-
+
/* fill in instruction info */
decode (pc, cpu.memory + pc, cpu.cache + idx);
-
+
/* point to new cache entry */
cpu.cache_idx[pc] = idx;
}
#define SET_L_REG(x,y) (*(lreg[x])) = (y)
#define GET_MEMORY_L(x) \
- ((cpu.memory[x+0] << 24) | (cpu.memory[x+1] << 16) | (cpu.memory[x+2] << 8) | cpu.memory[x+3])
+ (x < memory_size \
+ ? ((cpu.memory[x+0] << 24) | (cpu.memory[x+1] << 16) \
+ | (cpu.memory[x+2] << 8) | cpu.memory[x+3]) \
+ : ((cpu.eightbit[(x+0) & 0xff] << 24) | (cpu.eightbit[(x+1) & 0xff] << 16) \
+ | (cpu.eightbit[(x+2) & 0xff] << 8) | cpu.eightbit[(x+3) & 0xff]))
#define GET_MEMORY_W(x) \
- ((cpu.memory[x+0] << 8) | (cpu.memory[x+1] << 0))
+ (x < memory_size \
+ ? ((cpu.memory[x+0] << 8) | (cpu.memory[x+1] << 0)) \
+ : ((cpu.eightbit[(x+0) & 0xff] << 8) | (cpu.eightbit[(x+1) & 0xff] << 0)))
-#define SET_MEMORY_B(x,y) \
- (cpu.memory[(x)] = y)
-
-#define SET_MEMORY_W(x,y) \
-{register unsigned char *_p = cpu.memory+x;\
- register int __y = y;\
- _p[0] = (__y)>>8;\
- _p[1] =(__y); }
+#define GET_MEMORY_B(x) \
+ (x < memory_size ? (cpu.memory[x]) : (cpu.eightbit[x & 0xff]))
#define SET_MEMORY_L(x,y) \
-{register unsigned char *_p = cpu.memory+x;register int __y = y;\
- _p[0] = (__y)>>24; _p[1] = (__y)>>16; _p[2] = (__y)>>8; _p[3] = (__y)>>0;}
+{ register unsigned char *_p; register int __y = y; \
+ _p = (x < memory_size ? cpu.memory+x : cpu.eightbit + (x & 0xff)); \
+ _p[0] = (__y)>>24; _p[1] = (__y)>>16; \
+ _p[2] = (__y)>>8; _p[3] = (__y)>>0;}
-#define GET_MEMORY_B(x) (cpu.memory[x])
+#define SET_MEMORY_W(x,y) \
+{ register unsigned char *_p; register int __y = y; \
+ _p = (x < memory_size ? cpu.memory+x : cpu.eightbit + (x & 0xff)); \
+ _p[0] = (__y)>>8; _p[1] =(__y);}
+
+#define SET_MEMORY_B(x,y) \
+ (x < memory_size ? (cpu.memory[(x)] = y) : (cpu.eightbit[x & 0xff] = y))
int
fetch (arg, n)
-ea_type *arg;
+ ea_type *arg;
{
int rn = arg->reg;
int abs = arg->literal;
int r;
int t;
-
+
switch (arg->type)
{
case X (OP_REG, SB):
case X (OP_IMM, SL):
return abs;
case X (OP_DEC, SB):
- abort();
+ abort ();
- case X(OP_INC,SB):
- t = GET_L_REG(rn);
+ case X (OP_INC, SB):
+ t = GET_L_REG (rn);
t &= cpu.mask;
- r = GET_MEMORY_B(t);
- t ++;
+ r = GET_MEMORY_B (t);
+ t++;
t = t & cpu.mask;
- SET_L_REG(rn,t);
+ SET_L_REG (rn, t);
return r;
break;
- case X(OP_INC,SW):
- t = GET_L_REG(rn);
+ case X (OP_INC, SW):
+ t = GET_L_REG (rn);
t &= cpu.mask;
- r = GET_MEMORY_W(t);
- t +=2;
+ r = GET_MEMORY_W (t);
+ t += 2;
t = t & cpu.mask;
- SET_L_REG(rn,t);
+ SET_L_REG (rn, t);
return r;
- case X(OP_INC,SL):
- t = GET_L_REG(rn);
+ case X (OP_INC, SL):
+ t = GET_L_REG (rn);
t &= cpu.mask;
- r = GET_MEMORY_L(t);
-
- t +=4;
+ r = GET_MEMORY_L (t);
+
+ t += 4;
t = t & cpu.mask;
- SET_L_REG(rn,t);
+ SET_L_REG (rn, t);
return r;
-
+
case X (OP_DISP, SB):
t = GET_L_REG (rn) + abs;
t &= cpu.mask;
return GET_MEMORY_B (t);
-
+
case X (OP_DISP, SW):
t = GET_L_REG (rn) + abs;
t &= cpu.mask;
return GET_MEMORY_W (t);
-
+
case X (OP_DISP, SL):
t = GET_L_REG (rn) + abs;
t &= cpu.mask;
return GET_MEMORY_L (t);
-
+
+ case X (OP_MEM, SL):
+ t = GET_MEMORY_L (abs);
+ t &= cpu.mask;
+ return t;
+
+ case X (OP_MEM, SW):
+ t = GET_MEMORY_W (abs);
+ t &= cpu.mask;
+ return t;
+
default:
abort ();
-
+
}
}
-
-
-
-static
-void store (arg, n)
-ea_type *arg;
-int n;
+static
+void
+store (arg, n)
+ ea_type *arg;
+ int n;
{
int rn = arg->reg;
int abs = arg->literal;
int t;
-
+
switch (arg->type)
{
case X (OP_REG, SB):
case X (OP_REG, SL):
SET_L_REG (rn, n);
break;
-
+
case X (OP_DEC, SB):
- t = GET_L_REG (rn) - 1;
+ t = GET_L_REG (rn) - 1;
t &= cpu.mask;
- SET_L_REG (rn,t);
+ SET_L_REG (rn, t);
SET_MEMORY_B (t, n);
break;
case X (OP_DEC, SW):
- t= (GET_L_REG (rn) - 2 ) & cpu.mask;
+ t = (GET_L_REG (rn) - 2) & cpu.mask;
SET_L_REG (rn, t);
SET_MEMORY_W (t, n);
break;
case X (OP_DEC, SL):
- t = (GET_L_REG(rn) -4 ) & cpu.mask;
+ t = (GET_L_REG (rn) - 4) & cpu.mask;
SET_L_REG (rn, t);
- SET_MEMORY_L (t,n);
+ SET_MEMORY_L (t, n);
break;
-
case X (OP_DISP, SB):
t = GET_L_REG (rn) + abs;
t &= cpu.mask;
static union
- {
- short int i;
- struct
- {
- char low;
- char high;
- }
- u;
- }
+{
+ short int i;
+ struct
+ {
+ char low;
+ char high;
+ }
+ u;
+}
littleendian;
init = 1;
littleendian.i = 1;
- cpu.memory = (unsigned char *) calloc (sizeof (char), MSIZE);
- cpu.cache_idx = (unsigned short *) calloc (sizeof (short), MSIZE);
- cpu.mask = (1<<MPOWER)-1;
-
+ if (h8300hmode)
+ memory_size = H8300H_MSIZE;
+ else
+ memory_size = H8300_MSIZE;
+ cpu.memory = (unsigned char *) calloc (sizeof (char), memory_size);
+ cpu.cache_idx = (unsigned short *) calloc (sizeof (short), memory_size);
+ cpu.eightbit = (unsigned char *) calloc (sizeof (char), 256);
+
+ /* `msize' must be a power of two */
+ if ((memory_size & (memory_size - 1)) != 0)
+ abort ();
+ cpu.mask = memory_size - 1;
+
for (i = 0; i < 9; i++)
{
cpu.regs[i] = 0;
}
if (*p == 0x33)
{
- breg[i+8] = p;
+ breg[i + 8] = p;
}
p++;
}
lreg[i] = &cpu.regs[i];
}
-
lreg[8] = &cpu.regs[8];
-
+
/* initialize the seg registers */
if (!cpu.cache)
sim_csize (CSIZE);
-
}
}
#define V (v != 0)
#define N (n != 0)
-int
-sim_resume (step)
+static int
+mop (code, bsize, sign)
+ decoded_inst *code;
+ int bsize;
+ int sign;
+{
+ int multiplier;
+ int multiplicand;
+ int result;
+ int n, nz;
+
+ if (sign)
+ {
+ multiplicand =
+ bsize ? SEXTCHAR (GET_W_REG (code->dst.reg)) :
+ SEXTSHORT (GET_W_REG (code->dst.reg));
+ multiplier =
+ bsize ? SEXTCHAR (GET_B_REG (code->src.reg)) :
+ SEXTSHORT (GET_W_REG (code->src.reg));
+ }
+ else
+ {
+ multiplicand = bsize ? UEXTCHAR (GET_W_REG (code->dst.reg)) :
+ UEXTSHORT (GET_W_REG (code->dst.reg));
+ multiplier =
+ bsize ? UEXTCHAR (GET_B_REG (code->src.reg)) :
+ UEXTSHORT (GET_W_REG (code->src.reg));
+
+ }
+ result = multiplier * multiplicand;
+
+ if (sign)
+ {
+ n = result & (bsize ? 0x8000 : 0x80000000);
+ nz = result & (bsize ? 0xffff : 0xffffffff);
+ }
+ if (bsize)
+ {
+ SET_W_REG (code->dst.reg, result);
+ }
+ else
+ {
+ SET_L_REG (code->dst.reg, result);
+ }
+/* return ((n==1) << 1) | (nz==1); */
+
+}
+
+#define ONOT(name, how) \
+case O(name, SB): \
+{ \
+ int t; \
+ int hm = 0x80; \
+ rd = GET_B_REG (code->src.reg); \
+ how; \
+ goto shift8; \
+} \
+case O(name, SW): \
+{ \
+ int t; \
+ int hm = 0x8000; \
+ rd = GET_W_REG (code->src.reg); \
+ how; \
+ goto shift16; \
+} \
+case O(name, SL): \
+{ \
+ int t; \
+ int hm = 0x80000000; \
+ rd = GET_L_REG (code->src.reg); \
+ how; \
+ goto shift32; \
+}
+
+#define OSHIFTS(name, how1, how2) \
+case O(name, SB): \
+{ \
+ int t; \
+ int hm = 0x80; \
+ rd = GET_B_REG (code->src.reg); \
+ if ((GET_MEMORY_B (pc + 1) & 0x40) == 0) \
+ { \
+ how1; \
+ } \
+ else \
+ { \
+ how2; \
+ } \
+ goto shift8; \
+} \
+case O(name, SW): \
+{ \
+ int t; \
+ int hm = 0x8000; \
+ rd = GET_W_REG (code->src.reg); \
+ if ((GET_MEMORY_B (pc + 1) & 0x40) == 0) \
+ { \
+ how1; \
+ } \
+ else \
+ { \
+ how2; \
+ } \
+ goto shift16; \
+} \
+case O(name, SL): \
+{ \
+ int t; \
+ int hm = 0x80000000; \
+ rd = GET_L_REG (code->src.reg); \
+ if ((GET_MEMORY_B (pc + 1) & 0x40) == 0) \
+ { \
+ how1; \
+ } \
+ else \
+ { \
+ how2; \
+ } \
+ goto shift32; \
+}
+
+#define OBITOP(name,f, s, op) \
+case O(name, SB): \
+{ \
+ int m; \
+ int b; \
+ if (f) ea = fetch (&code->dst); \
+ m=1<< fetch(&code->src); \
+ op; \
+ if(s) store (&code->dst,ea); goto next; \
+}
+
+void
+sim_resume (step, siggnal)
{
static int init1;
int cycles = 0;
int insts = 0;
int tick_start = get_now ();
void (*prev) ();
-
+ int poll_count = 0;
int res;
int tmp;
int rd;
int bit;
int pc;
int c, nz, v, n;
-
+ int oldmask;
init_pointers ();
prev = signal (SIGINT, control_c);
pc = cpu.pc;
- GETSR ();
+ /* The PC should never be odd. */
+ if (pc & 0x1)
+ abort ();
+ GETSR ();
+ oldmask = cpu.mask;
+ if (!h8300hmode)
+ cpu.mask = 0xffff;
do
{
int cidx;
code->op ? code->op->name : "**");
}
cpu.stats[code->opcode]++;
-
+
#endif
cycles += code->cycles;
case O (O_SUBX, SB):
rd = fetch (&code->dst);
ea = fetch (&code->src);
- ea = -( ea + C);
+ ea = -(ea + C);
res = rd + ea;
goto alu8;
res = rd + ea;
goto alu8;
-#define RD rd = fetch(&code->src);
-#define RD_EA rd = fetch(&code->dst); ea = fetch(&code->src);
+#define EA ea = fetch(&code->src);
+#define RD_EA ea = fetch(&code->src); rd = fetch(&code->dst);
- ALUOP (1, O_SUB, RD_EA; ea = -ea ; res = rd + ea);
- ALUOP (1, O_NEG, RD; ea = -ea ;rd = 0; res = rd + ea);
+ ALUOP (1, O_SUB, RD_EA;
+ ea = -ea;
+ res = rd + ea);
+ ALUOP (1, O_NEG, EA;
+ ea = -ea;
+ rd = 0;
+ res = rd + ea);
- case O(O_ADD,SB):
- rd = GET_B_REG(code->dst.reg);
- ea = fetch(&code->src);
+ case O (O_ADD, SB):
+ rd = GET_B_REG (code->dst.reg);
+ ea = fetch (&code->src);
res = rd + ea;
goto alu8;
- case O(O_ADD,SW):
- rd = GET_W_REG(code->dst.reg);
- ea = fetch(&code->src);
+ case O (O_ADD, SW):
+ rd = GET_W_REG (code->dst.reg);
+ ea = fetch (&code->src);
res = rd + ea;
goto alu16;
- case O(O_ADD,SL):
- rd = GET_L_REG(code->dst.reg);
- ea = fetch(&code->src);
+ case O (O_ADD, SL):
+ rd = GET_L_REG (code->dst.reg);
+ ea = fetch (&code->src);
res = rd + ea;
goto alu32;
-
- LOGOP (O_AND, RD_EA; res = rd & ea);
- LOGOP (O_OR, RD_EA; res = rd | ea);
+ LOGOP (O_AND, RD_EA;
+ res = rd & ea);
+
+ LOGOP (O_OR, RD_EA;
+ res = rd | ea);
- LOGOP (O_XOR, RD_EA; res = rd ^ ea);
+ LOGOP (O_XOR, RD_EA;
+ res = rd ^ ea);
- case O(O_MOV_TO_MEM,SB):
- res = GET_B_REG(code->src.reg);
+ case O (O_MOV_TO_MEM, SB):
+ res = GET_B_REG (code->src.reg);
goto log8;
- case O(O_MOV_TO_MEM,SW):
- res = GET_W_REG(code->src.reg);
+ case O (O_MOV_TO_MEM, SW):
+ res = GET_W_REG (code->src.reg);
goto log16;
- case O(O_MOV_TO_MEM,SL):
- res = GET_L_REG(code->src.reg);
+ case O (O_MOV_TO_MEM, SL):
+ res = GET_L_REG (code->src.reg);
goto log32;
- case O(O_MOV_TO_REG,SB):
- res = fetch(&code->src);
- SET_B_REG(code->dst.reg, res);
+ case O (O_MOV_TO_REG, SB):
+ res = fetch (&code->src);
+ SET_B_REG (code->dst.reg, res);
goto just_flags_log8;
- case O(O_MOV_TO_REG,SW):
- res = fetch(&code->src);
- SET_W_REG(code->dst.reg, res);
+ case O (O_MOV_TO_REG, SW):
+ res = fetch (&code->src);
+ SET_W_REG (code->dst.reg, res);
goto just_flags_log16;
- case O(O_MOV_TO_REG,SL):
- res = fetch(&code->src);
- SET_L_REG(code->dst.reg, res);
+ case O (O_MOV_TO_REG, SL):
+ res = fetch (&code->src);
+ SET_L_REG (code->dst.reg, res);
goto just_flags_log32;
- case O(O_ADDS,SL):
- SET_L_REG(code->dst.reg,
- GET_L_REG(code->dst.reg)
- + code->src.literal);
-
+ case O (O_ADDS, SL):
+ SET_L_REG (code->dst.reg,
+ GET_L_REG (code->dst.reg)
+ + code->src.literal);
+
goto next;
- case O(O_SUBS,SL):
- SET_L_REG(code->dst.reg,
- GET_L_REG(code->dst.reg)
- - code->src.literal);
+ case O (O_SUBS, SL):
+ SET_L_REG (code->dst.reg,
+ GET_L_REG (code->dst.reg)
+ - code->src.literal);
goto next;
-
+
case O (O_CMP, SB):
rd = fetch (&code->dst);
ea = fetch (&code->src);
case O (O_DEC, SW):
rd = GET_W_REG (code->dst.reg);
- ea = - code->src.literal;
+ ea = -code->src.literal;
res = rd + ea;
SET_W_REG (code->dst.reg, res);
goto just_flags_inc16;
#define GET_CCR(x) BUILDSR();x = cpu.ccr
-
+
case O (O_ANDC, SB):
GET_CCR (rd);
ea = code->src.literal;
res = rd & ea;
goto setc;
+ case O (O_ORC, SB):
+ GET_CCR (rd);
+ ea = code->src.literal;
+ res = rd | ea;
+ goto setc;
+
+ case O (O_XORC, SB):
+ GET_CCR (rd);
+ ea = code->src.literal;
+ res = rd ^ ea;
+ goto setc;
+
case O (O_BRA, SB):
if (1)
goto condtrue;
goto next;
- case O(O_SYSCALL, SB):
- printf("%c", cpu.regs[2]);
+ case O (O_SYSCALL, SB):
+ printf ("%c", cpu.regs[2]);
goto next;
-
-
-
-#define OSHIFTS(name, how) \
-case O(name, SB):{ int t;int hm = 0x80; rd = GET_B_REG(code->src.reg);how; goto shift8;} \
-case O(name, SW):{ int t;int hm = 0x8000; rd = GET_W_REG(code->src.reg); how; goto shift16;} \
-case O(name, SL):{ int t;int hm = 0x80000000; rd = GET_L_REG(code->src.reg);how; goto shift32;}
-
-
- OSHIFTS(O_NOT, rd = ~rd);
- OSHIFTS(O_SHLL, c = rd & hm; rd<<=1);
- OSHIFTS(O_SHLR, c = rd & 1; rd = (unsigned int) rd >> 1);
- OSHIFTS(O_SHAL, c = rd & hm; rd<<=1);
- OSHIFTS(O_SHAR, t = rd & hm; c = rd&1;rd>>=1;rd|=t;);
- OSHIFTS(O_ROTL, c = rd & hm; rd <<=1; rd|= C);
- OSHIFTS(O_ROTR, c = rd & 1; rd = (unsigned int) rd >> 1; if (c) rd |= hm;);
- OSHIFTS(O_ROTXL,t = rd & hm; rd<<=1; rd|=C; c=t;);
- OSHIFTS(O_ROTXR,t = rd & 1; rd = (unsigned int) rd >> 1; if (C) rd|=hm; c=t;);
-
- case O(O_JMP, SB):
+
+ ONOT (O_NOT, rd = ~rd; v = 0;);
+ OSHIFTS (O_SHLL,
+ c = rd & hm; v = 0; rd <<= 1,
+ c = rd & (hm >> 1); v = 0; rd <<= 2);
+ OSHIFTS (O_SHLR,
+ c = rd & 1; v = 0; rd = (unsigned int) rd >> 1,
+ c = rd & 2; v = 0; rd = (unsigned int) rd >> 2);
+ OSHIFTS (O_SHAL,
+ c = rd & hm; v = (rd & hm) != ((rd & (hm >> 1)) << 1); rd <<= 1,
+ c = rd & (hm >> 1); v = (rd & (hm >> 1)) != ((rd & (hm >> 2)) << 2); rd <<= 2);
+ OSHIFTS (O_SHAR,
+ t = rd & hm; c = rd & 1; v = 0; rd >>= 1; rd |= t,
+ t = rd & hm; c = rd & 2; v = 0; rd >>= 2; rd |= t | t >> 1 );
+ OSHIFTS (O_ROTL,
+ c = rd & hm; v = 0; rd <<= 1; rd |= C,
+ c = rd & (hm >> 1); v = 0; rd <<= 2; rd |= C);
+ OSHIFTS (O_ROTR,
+ c = rd & 1; v = 0; rd = (unsigned int) rd >> 1; if (c) rd |= hm,
+ c = rd & 2; v = 0; rd = (unsigned int) rd >> 2; if (c) rd |= hm);
+ OSHIFTS (O_ROTXL,
+ t = rd & hm; rd <<= 1; rd |= C; c = t; v = 0,
+ t = rd & (hm >> 1); rd <<= 2; rd |= C; c = t; v = 0);
+ OSHIFTS (O_ROTXR,
+ t = rd & 1; rd = (unsigned int) rd >> 1; if (C) rd |= hm; c = t; v = 0,
+ t = rd & 2; rd = (unsigned int) rd >> 2; if (C) rd |= hm; c = t; v = 0);
+
+ case O (O_JMP, SB):
{
pc = fetch (&code->src);
goto end;
-
+
}
-
+
case O (O_JSR, SB):
{
int tmp;
call:
tmp = cpu.regs[7];
- if (HMODE)
+ if (h8300hmode)
{
tmp -= 4;
SET_MEMORY_L (tmp, code->next_pc);
goto end;
}
- case O(O_BSR, SB):
+ case O (O_BSR, SB):
pc = code->src.literal;
goto call;
-
+
case O (O_RTS, SB):
{
int tmp;
-
tmp = cpu.regs[7];
- if (HMODE)
+ if (h8300hmode)
{
pc = GET_MEMORY_L (tmp);
tmp += 4;
-
}
else
{
case O (O_ILL, SB):
cpu.exception = SIGILL;
goto end;
-
- case O(O_BPT,SB):
+ case O (O_SLEEP, SB):
+ /* The format of r0 is defined by devo/include/wait.h.
+ cpu.exception handling needs some cleanup: we need to make the
+ the handling of normal exits vs signals, etc. more sensible. */
+ if (! WIFEXITED (cpu.regs[0]) && WIFSIGNALED (cpu.regs[0]))
+ cpu.exception = SIGILL;
+ else
+ cpu.exception = SIGTRAP;
+ goto end;
+ case O (O_BPT, SB):
cpu.exception = SIGTRAP;
goto end;
-#define OBITOP(name,f, s, op) \
- case O(name, SB): {int m;int b; \
- if (f) ea = fetch(&code->dst);\
- m=1<<code->src.literal;\
- op;\
- if(s) store(&code->dst,ea); goto next;\
- }
- OBITOP(O_BNOT,1,1,ea ^= m);
- OBITOP(O_BTST,1,0,nz = ea & m);
- OBITOP(O_BLD,1,0, c = ea & m);
- OBITOP(O_BILD,1,0, c = !(ea & m));
- OBITOP(O_BST,1,1, ea &= ~m; if (C) ea |=m);
- OBITOP(O_BIST,1,1, ea &= ~m; if (!C) ea |=m);
- OBITOP(O_BAND,1,1, b = (ea & m) && C; ea &= ~m; if (b) ea |=m);
- OBITOP(O_BIAND,1,1, b = (ea & m) && C; ea &= ~m; if (!b) ea |=m);
- OBITOP(O_BOR,1,1, b = (ea & m) || C; ea &= ~m; if (b) ea |=m);
- OBITOP(O_BIOR,1,1, b = (ea & m) || C; ea &= ~m; if (!b) ea |=m);
- OBITOP(O_BXOR,1,1, b = (ea & m) != C; ea &= ~m; if (b) ea |=m);
- OBITOP(O_BIXOR,1,1, b = (ea & m) != C; ea &= ~m; if (!b) ea |=m);
- OBITOP(O_BCLR,1,1, ea &= ~m; );
- OBITOP(O_BSET,1,1, ea |= m; );
-
-
-#define MOP(bsize, signed) \
- { \
- int multiplier; \
- int multiplicand; \
- int result; \
- \
- if (signed) \
- { \
- multiplicand = \
- bsize ? SEXTCHAR(GET_W_REG(code->dst.reg)): \
- SEXTSHORT(GET_W_REG(code->dst.reg)); \
- multiplier = \
- bsize ? SEXTCHAR(GET_B_REG(code->src.reg)): \
- SEXTSHORT(GET_B_REG(code->src.reg)); \
- } \
- else \
- { \
- multiplicand = bsize ? UEXTCHAR(GET_W_REG(code->dst.reg)): \
- UEXTSHORT(GET_W_REG(code->dst.reg)); \
- multiplier = \
- bsize ? UEXTCHAR(GET_B_REG(code->src.reg)): \
- UEXTSHORT(GET_B_REG(code->src.reg)); \
- \
- } \
- result = multiplier * multiplicand; \
- \
- if (signed) \
- { \
- n = result & (bsize ? 0x8000: 0x80000000); \
- nz = result & (bsize ? 0xffff: 0xffffffff); \
- } \
- if (bsize) \
- { \
- SET_W_REG(code->dst.reg, result); \
- } \
- else \
- { \
- SET_L_REG(code->dst.reg, result); \
- } \
- goto next; \
- } \
-
- case O(O_MULS, SB): MOP(1,1);break;
- case O(O_MULS, SW): MOP(0,1); break;
- case O(O_MULU, SB): MOP(1,0);break;
- case O(O_MULU, SW): MOP(0,0); break;
-
-
- case O(O_DIVU,SB):
- {
-
- rd = GET_W_REG(code->dst.reg);
- ea = GET_B_REG(code->src.reg);
- if (ea) {
- tmp = rd % ea;
- rd = rd / ea;
+ OBITOP (O_BNOT, 1, 1, ea ^= m);
+ OBITOP (O_BTST, 1, 0, nz = ea & m);
+ OBITOP (O_BCLR, 1, 1, ea &= ~m);
+ OBITOP (O_BSET, 1, 1, ea |= m);
+ OBITOP (O_BLD, 1, 0, c = ea & m);
+ OBITOP (O_BILD, 1, 0, c = !(ea & m));
+ OBITOP (O_BST, 1, 1, ea &= ~m;
+ if (C) ea |= m);
+ OBITOP (O_BIST, 1, 1, ea &= ~m;
+ if (!C) ea |= m);
+ OBITOP (O_BAND, 1, 0, c = (ea & m) && C);
+ OBITOP (O_BIAND, 1, 0, c = !(ea & m) && C);
+ OBITOP (O_BOR, 1, 0, c = (ea & m) || C);
+ OBITOP (O_BIOR, 1, 0, c = !(ea & m) || C);
+ OBITOP (O_BXOR, 1, 0, c = (ea & m) != C);
+ OBITOP (O_BIXOR, 1, 0, c = !(ea & m) != C);
+
+
+#define MOP(bsize, signed) mop(code, bsize,signed); goto next;
+
+ case O (O_MULS, SB):
+ MOP (1, 1);
+ break;
+ case O (O_MULS, SW):
+ MOP (0, 1);
+ break;
+ case O (O_MULU, SB):
+ MOP (1, 0);
+ break;
+ case O (O_MULU, SW):
+ MOP (0, 0);
+ break;
- }
- SET_W_REG(code->dst.reg, (rd & 0xff) | (tmp << 8));
- n = ea & 0x80;
- nz = ea & 0xff;
-
- goto next;
- }
- case O(O_DIVU,SW):
- {
-
- rd = GET_L_REG(code->dst.reg);
- ea = GET_W_REG(code->src.reg);
- n = ea & 0x8000;
- nz = ea & 0xffff;
- if (ea) {
- tmp = rd % ea;
- rd = rd / ea;
- }
- SET_L_REG(code->dst.reg, (rd & 0xffff) | (tmp << 16));
- goto next;
- }
-
+ case O (O_DIVU, SB):
+ {
+ rd = GET_W_REG (code->dst.reg);
+ ea = GET_B_REG (code->src.reg);
+ if (ea)
+ {
+ tmp = (unsigned)rd % ea;
+ rd = (unsigned)rd / ea;
+ }
+ SET_W_REG (code->dst.reg, (rd & 0xff) | (tmp << 8));
+ n = ea & 0x80;
+ nz = ea & 0xff;
+ goto next;
+ }
+ case O (O_DIVU, SW):
+ {
+ rd = GET_L_REG (code->dst.reg);
+ ea = GET_W_REG (code->src.reg);
+ n = ea & 0x8000;
+ nz = ea & 0xffff;
+ if (ea)
+ {
+ tmp = (unsigned)rd % ea;
+ rd = (unsigned)rd / ea;
+ }
+ SET_L_REG (code->dst.reg, (rd & 0xffff) | (tmp << 16));
+ goto next;
+ }
- case O(O_DIVS,SB):
- {
+ case O (O_DIVS, SB):
+ {
- rd = SEXTSHORT(GET_W_REG(code->dst.reg));
- ea = SEXTCHAR(GET_B_REG(code->src.reg));
- if (ea) {
+ rd = SEXTSHORT (GET_W_REG (code->dst.reg));
+ ea = SEXTCHAR (GET_B_REG (code->src.reg));
+ if (ea)
+ {
+ tmp = (int) rd % (int) ea;
+ rd = (int) rd / (int) ea;
+ n = rd & 0x8000;
+ nz = 1;
+ }
+ else
+ nz = 0;
+ SET_W_REG (code->dst.reg, (rd & 0xff) | (tmp << 8));
+ goto next;
+ }
+ case O (O_DIVS, SW):
+ {
+ rd = GET_L_REG (code->dst.reg);
+ ea = SEXTSHORT (GET_W_REG (code->src.reg));
+ if (ea)
+ {
+ tmp = (int) rd % (int) ea;
+ rd = (int) rd / (int) ea;
+ n = rd & 0x80000000;
+ nz = 1;
+ }
+ else
+ nz = 0;
+ SET_L_REG (code->dst.reg, (rd & 0xffff) | (tmp << 16));
+ goto next;
+ }
+ case O (O_EXTS, SW):
+ rd = GET_B_REG (code->src.reg + 8) & 0xff; /* Yes, src, not dst. */
+ ea = rd & 0x80 ? -256 : 0;
+ res = rd + ea;
+ goto log16;
+ case O (O_EXTS, SL):
+ rd = GET_W_REG (code->src.reg) & 0xffff;
+ ea = rd & 0x8000 ? -65536 : 0;
+ res = rd + ea;
+ goto log32;
+ case O (O_EXTU, SW):
+ rd = GET_B_REG (code->src.reg + 8) & 0xff;
+ ea = 0;
+ res = rd + ea;
+ goto log16;
+ case O (O_EXTU, SL):
+ rd = GET_W_REG (code->src.reg) & 0xffff;
+ ea = 0;
+ res = rd + ea;
+ goto log32;
- tmp = (int)rd % (int)ea;
- rd = (int)rd / (int)ea;
- n = rd & 0x8000;
- nz = 1;
+ case O (O_NOP, SB):
+ goto next;
+
+ case O (O_STM, SL):
+ {
+ int nregs, firstreg, i;
+
+ nregs = GET_MEMORY_B (pc + 1);
+ nregs >>= 4;
+ nregs &= 0xf;
+ firstreg = GET_MEMORY_B (pc + 3);
+ firstreg &= 0xf;
+ for (i = firstreg; i <= firstreg + nregs; i++)
+ {
+ cpu.regs[7] -= 4;
+ SET_MEMORY_L (cpu.regs[7], cpu.regs[i]);
+ }
+ }
+ goto next;
+
+ case O (O_LDM, SL):
+ {
+ int nregs, firstreg, i;
+
+ nregs = GET_MEMORY_B (pc + 1);
+ nregs >>= 4;
+ nregs &= 0xf;
+ firstreg = GET_MEMORY_B (pc + 3);
+ firstreg &= 0xf;
+ for (i = firstreg; i >= firstreg - nregs; i--)
+ {
+ cpu.regs[i] = GET_MEMORY_L (cpu.regs[7]);
+ cpu.regs[7] += 4;
+ }
+ }
+ goto next;
+
+ default:
+ cpu.exception = SIGILL;
+ goto end;
}
- else
- nz = 0;
- SET_W_REG(code->dst.reg, (rd & 0xff) | (tmp << 8));
- goto next;
- }
- case O(O_DIVS,SW):
- {
-
- rd = GET_L_REG(code->dst.reg);
- ea = SEXTSHORT(GET_W_REG(code->src.reg));
- if (ea) {
-
- tmp = (int)rd % (int)ea;
- rd = (int)rd / (int)ea;
- n = rd & 0x80000000;
- nz = 1;
-
- }
- else nz =0;
- SET_L_REG(code->dst.reg, (rd & 0xffff) | (tmp << 16));
- goto next;
- }
- case O (O_EXTS, SW):
- rd = GET_B_REG (code->src.reg + 8) & 0xff; /* Yes, src, not dst. */
- ea = rd & 0x80 ? -256 : 0;
- res = rd + ea;
- goto log16;
- case O (O_EXTS, SL):
- rd = GET_W_REG (code->src.reg) & 0xffff;
- ea = rd & 0x8000 ? -65536 : 0;
- res = rd + ea;
- goto log32;
- case O (O_EXTU, SW):
- rd = GET_B_REG (code->src.reg + 8) & 0xff;
- ea = 0;
- res = rd + ea;
- goto log16;
- case O (O_EXTU, SL):
- rd = GET_W_REG (code->src.reg) & 0xffff;
- ea = 0;
- res = rd + ea;
- goto log32;
+ abort ();
- default:
- cpu.exception = 123;
+ setc:
+ cpu.ccr = res;
+ GETSR ();
+ goto next;
+
+ condtrue:
+ /* When a branch works */
+ pc = code->src.literal;
goto end;
- }
- abort ();
-
- setc:
- GETSR();
- goto next;
-
- condtrue:
- /* When a branch works */
- pc = code->src.literal;
- goto end;
-
- /* Set the cond codes from res */
- bitop:
-
- /* Set the flags after an 8 bit inc/dec operation */
- just_flags_inc8:
- n = res & 0x80;
- nz = res & 0xff;
- v = (rd & 0x7f) == 0x7f;
- goto next;
-
-
- /* Set the flags after an 16 bit inc/dec operation */
- just_flags_inc16:
- n = res & 0x8000;
- nz = res & 0xffff;
- v = (rd & 0x7fff) == 0x7fff;
- goto next;
-
-
- /* Set the flags after an 32 bit inc/dec operation */
- just_flags_inc32:
- n = res & 0x80000000;
- nz = res & 0xffffffff;
- v = (rd & 0x7fffffff) == 0x7fffffff;
- goto next;
-
-
- shift8:
- /* Set flags after an 8 bit shift op, carry set in insn */
- n = (rd & 0x80);
- v = 0;
- nz = rd & 0xff;
- SET_B_REG(code->src.reg, rd);
- goto next;
-
-
- shift16:
- /* Set flags after an 16 bit shift op, carry set in insn */
- n = (rd & 0x8000);
- v = 0;
- nz = rd & 0xffff;
-
- SET_W_REG(code->src.reg, rd);
- goto next;
-
- shift32:
- /* Set flags after an 32 bit shift op, carry set in insn */
- n = (rd & 0x80000000);
- v = 0;
- nz = rd & 0xffffffff;
- SET_L_REG(code->src.reg, rd);
- goto next;
-
- log32:
- store (&code->dst, res);
- just_flags_log32:
- /* flags after a 32bit logical operation */
- n = res & 0x80000000;
- nz = res & 0xffffffff;
- v = 0;
- goto next;
-
- log16:
- store (&code->dst, res);
- just_flags_log16:
- /* flags after a 16bit logical operation */
- n = res & 0x8000;
- nz = res & 0xffff;
- v = 0;
- goto next;
-
-
- log8:
- store (&code->dst, res);
- just_flags_log8:
- n = res & 0x80;
- nz = res & 0xff;
- v = 0;
- goto next;
-
- alu8:
- SET_B_REG (code->dst.reg, res);
- just_flags_alu8:
- n = res & 0x80;
- nz = res & 0xff;
- v = ((ea & 0x80) == (rd & 0x80)) && ((ea & 0x80) != (res & 0x80));
- c = (res & 0x100);
- goto next;
-
- alu16:
- SET_W_REG (code->dst.reg, res);
- just_flags_alu16:
- n = res & 0x8000;
- nz = res & 0xffff;
- v = ((ea & 0x8000) == (rd & 0x8000)) && ((ea & 0x8000) != (res & 0x8000));
- c = (res & 0x10000);
- goto next;
-
- alu32:
- SET_L_REG (code->dst.reg, res);
- just_flags_alu32:
- n = res & 0x80000000;
- nz = res & 0xffffffff;
- v = ((ea & 0x80000000) == (rd & 0x80000000))
- && ((ea & 0x80000000) != (res & 0x80000000));
- switch (code->opcode / 4)
- {
- case O_ADD:
- c = ((unsigned) res < (unsigned) rd) || ((unsigned) res < (unsigned) ea);
- break;
- case O_SUB:
- case O_CMP:
- c = (unsigned) rd < (unsigned) -ea;
- break;
- case O_NEG:
- c = res != 0;
- break;
- }
- goto next;
+ /* Set the cond codes from res */
+ bitop:
+
+ /* Set the flags after an 8 bit inc/dec operation */
+ just_flags_inc8:
+ n = res & 0x80;
+ nz = res & 0xff;
+ v = (rd & 0x7f) == 0x7f;
+ goto next;
+
+
+ /* Set the flags after an 16 bit inc/dec operation */
+ just_flags_inc16:
+ n = res & 0x8000;
+ nz = res & 0xffff;
+ v = (rd & 0x7fff) == 0x7fff;
+ goto next;
+
+
+ /* Set the flags after an 32 bit inc/dec operation */
+ just_flags_inc32:
+ n = res & 0x80000000;
+ nz = res & 0xffffffff;
+ v = (rd & 0x7fffffff) == 0x7fffffff;
+ goto next;
+
+
+ shift8:
+ /* Set flags after an 8 bit shift op, carry,overflow set in insn */
+ n = (rd & 0x80);
+ nz = rd & 0xff;
+ SET_B_REG (code->src.reg, rd);
+ goto next;
+
+ shift16:
+ /* Set flags after an 16 bit shift op, carry,overflow set in insn */
+ n = (rd & 0x8000);
+ nz = rd & 0xffff;
+ SET_W_REG (code->src.reg, rd);
+ goto next;
+
+ shift32:
+ /* Set flags after an 32 bit shift op, carry,overflow set in insn */
+ n = (rd & 0x80000000);
+ nz = rd & 0xffffffff;
+ SET_L_REG (code->src.reg, rd);
+ goto next;
+
+ log32:
+ store (&code->dst, res);
+ just_flags_log32:
+ /* flags after a 32bit logical operation */
+ n = res & 0x80000000;
+ nz = res & 0xffffffff;
+ v = 0;
+ goto next;
+
+ log16:
+ store (&code->dst, res);
+ just_flags_log16:
+ /* flags after a 16bit logical operation */
+ n = res & 0x8000;
+ nz = res & 0xffff;
+ v = 0;
+ goto next;
+
+
+ log8:
+ store (&code->dst, res);
+ just_flags_log8:
+ n = res & 0x80;
+ nz = res & 0xff;
+ v = 0;
+ goto next;
+
+ alu8:
+ SET_B_REG (code->dst.reg, res);
+ just_flags_alu8:
+ n = res & 0x80;
+ nz = res & 0xff;
+ c = (res & 0x100);
+ switch (code->opcode / 4)
+ {
+ case O_ADD:
+ v = ((rd & 0x80) == (ea & 0x80)
+ && (rd & 0x80) != (res & 0x80));
+ break;
+ case O_SUB:
+ case O_CMP:
+ v = ((rd & 0x80) != (-ea & 0x80)
+ && (rd & 0x80) != (res & 0x80));
+ break;
+ case O_NEG:
+ v = (rd == 0x80);
+ break;
+ }
+ goto next;
+
+ alu16:
+ SET_W_REG (code->dst.reg, res);
+ just_flags_alu16:
+ n = res & 0x8000;
+ nz = res & 0xffff;
+ c = (res & 0x10000);
+ switch (code->opcode / 4)
+ {
+ case O_ADD:
+ v = ((rd & 0x8000) == (ea & 0x8000)
+ && (rd & 0x8000) != (res & 0x8000));
+ break;
+ case O_SUB:
+ case O_CMP:
+ v = ((rd & 0x8000) != (-ea & 0x8000)
+ && (rd & 0x8000) != (res & 0x8000));
+ break;
+ case O_NEG:
+ v = (rd == 0x8000);
+ break;
+ }
+ goto next;
+
+ alu32:
+ SET_L_REG (code->dst.reg, res);
+ just_flags_alu32:
+ n = res & 0x80000000;
+ nz = res & 0xffffffff;
+ switch (code->opcode / 4)
+ {
+ case O_ADD:
+ v = ((rd & 0x80000000) == (ea & 0x80000000)
+ && (rd & 0x80000000) != (res & 0x80000000));
+ c = ((unsigned) res < (unsigned) rd) || ((unsigned) res < (unsigned) ea);
+ break;
+ case O_SUB:
+ case O_CMP:
+ v = ((rd & 0x80000000) != (-ea & 0x80000000)
+ && (rd & 0x80000000) != (res & 0x80000000));
+ c = (unsigned) rd < (unsigned) -ea;
+ break;
+ case O_NEG:
+ v = (rd == 0x80000000);
+ c = res != 0;
+ break;
+ }
+ goto next;
- next:;
- pc = code->next_pc;
+ next:;
+ pc = code->next_pc;
- end:
- if (cpu.regs[8] ) abort();
-
- ;
+ end:
+ ;
+ /* if (cpu.regs[8] ) abort(); */
-}
+#if defined (WIN32)
+ /* Poll after every 100th insn, */
+ if (poll_count++ > 100)
+ {
+ poll_count = 0;
+ if (win32pollquit())
+ {
+ control_c();
+ }
+ }
+#endif
+#if defined(__GO32__)
+ /* Poll after every 100th insn, */
+ if (poll_count++ > 100)
+ {
+ poll_count = 0;
+ if (kbhit ())
+ {
+ int c = getkey ();
+ control_c ();
+ }
+ }
+#endif
+
+ }
while (!cpu.exception);
cpu.ticks += get_now () - tick_start;
cpu.cycles += cycles;
cpu.insts += insts;
+
cpu.pc = pc;
BUILDSR ();
-
+ cpu.mask = oldmask;
signal (SIGINT, prev);
}
-
-
-void
+int
sim_write (addr, buffer, size)
- long int addr;
+ SIM_ADDR addr;
unsigned char *buffer;
int size;
{
int i;
init_pointers ();
- if (addr < 0 || addr + size > MSIZE)
- return;
+ if (addr < 0)
+ return 0;
for (i = 0; i < size; i++)
{
- cpu.memory[addr + i] = buffer[i];
- cpu.cache_idx[addr + i] = 0;
+ if (addr < memory_size)
+ {
+ cpu.memory[addr + i] = buffer[i];
+ cpu.cache_idx[addr + i] = 0;
+ }
+ else
+ cpu.eightbit[(addr + i) & 0xff] = buffer[i];
}
+ return size;
}
-void
+int
sim_read (addr, buffer, size)
- long int addr;
- char *buffer;
+ SIM_ADDR addr;
+ unsigned char *buffer;
int size;
{
init_pointers ();
- if (addr < 0 || addr + size > MSIZE)
- return;
- memcpy (buffer, cpu.memory + addr, size);
+ if (addr < 0)
+ return 0;
+ if (addr < memory_size)
+ memcpy (buffer, cpu.memory + addr, size);
+ else
+ memcpy (buffer, cpu.eightbit + (addr & 0xff), size);
+ return size;
}
-
#define R0_REGNUM 0
#define R1_REGNUM 1
#define R2_REGNUM 2
#define SP_REGNUM R7_REGNUM /* Contains address of top of stack */
#define FP_REGNUM R6_REGNUM /* Contains address of executing
- * stack frame */
+ * stack frame */
#define CCR_REGNUM 8 /* Contains processor status */
#define PC_REGNUM 9 /* Contains program counter */
void
sim_store_register (rn, value)
int rn;
- int value;
+ unsigned char *value;
{
+ int longval;
+ int shortval;
+ int intval;
+ longval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3];
+ shortval = (value[0] << 8) | (value[1]);
+ intval = h8300hmode ? longval : shortval;
init_pointers ();
switch (rn)
{
case PC_REGNUM:
- cpu.pc = value;
+ cpu.pc = intval;
break;
default:
abort ();
case R5_REGNUM:
case R6_REGNUM:
case R7_REGNUM:
- cpu.regs[rn] = value;
+ cpu.regs[rn] = intval;
break;
case CCR_REGNUM:
- cpu.ccr = value;
+ cpu.ccr = intval;
break;
case CYCLE_REGNUM:
- cpu.cycles = value;
+ cpu.cycles = longval;
break;
case INST_REGNUM:
- cpu.insts = value;
+ cpu.insts = longval;
break;
case TICK_REGNUM:
- cpu.ticks = value;
+ cpu.ticks = longval;
break;
}
}
void
sim_fetch_register (rn, buf)
int rn;
- char *buf;
+ unsigned char *buf;
{
int v;
int longreg = 0;
case 10:
v = cpu.cycles;
longreg = 1;
-
break;
case 11:
v = cpu.ticks;
v = cpu.insts;
longreg = 1;
break;
-
}
- if (HMODE || longreg)
+ if (h8300hmode || longreg)
{
buf[0] = v >> 24;
buf[1] = v >> 16;
}
}
-int
-sim_trace ()
-{
- return 0;
-}
-
-sim_stop_signal ()
-{
- return cpu.exception;
-}
-
-sim_set_pc (n)
+void
+sim_stop_reason (reason, sigrc)
+ enum sim_stop *reason;
+ int *sigrc;
{
- sim_store_register (PC_REGNUM, n);
+ *reason = sim_stopped;
+ *sigrc = cpu.exception;
}
-
sim_csize (n)
{
if (cpu.cache)
}
-
void
sim_info (verbose)
int verbose;
-
{
double timetaken = (double) cpu.ticks / (double) now_persec ();
double virttime = cpu.cycles / 10.0e6;
-
- printf ("\n\n#instructions executed %10d\n", cpu.insts);
- printf ("#cycles (v approximate) %10d\n", cpu.cycles);
- printf ("#real time taken %10.4f\n", timetaken);
- printf ("#virtual time taked %10.4f\n", virttime);
- if (timetaken != 0.0)
- printf ("#simulation ratio %10.4f\n", virttime / timetaken);
- printf ("#compiles %10d\n", cpu.compiles);
- printf ("#cache size %10d\n", cpu.csize);
-
+ printf_filtered ("\n\n#instructions executed %10d\n", cpu.insts);
+ printf_filtered ("#cycles (v approximate) %10d\n", cpu.cycles);
+ printf_filtered ("#real time taken %10.4f\n", timetaken);
+ printf_filtered ("#virtual time taked %10.4f\n", virttime);
+ if (timetaken != 0.0)
+ printf_filtered ("#simulation ratio %10.4f\n", virttime / timetaken);
+ printf_filtered ("#compiles %10d\n", cpu.compiles);
+ printf_filtered ("#cache size %10d\n", cpu.csize);
#ifdef ADEBUG
- if (verbose)
+ if (verbose)
{
int i;
- for (i= 0; i < O_LAST; i++)
+ for (i = 0; i < O_LAST; i++)
{
if (cpu.stats[i])
- printf("%d: %d\n", i, cpu.stats[i]);
+ printf_filtered ("%d: %d\n", i, cpu.stats[i]);
}
}
#endif
}
+/* Indicate whether the cpu is an h8/300 or h8/300h.
+ FLAG is non-zero for the h8/300h. */
+
void
-set_h8300h ()
+set_h8300h (flag)
+ int flag;
{
- HMODE = 1;
+ h8300hmode = flag;
}
+
+void
+sim_kill ()
+{
+ /* nothing to do */
+}
+
+void
+sim_open (args)
+ char *args;
+{
+ /* nothing to do */
+}
+
+void
+sim_close (quitting)
+ int quitting;
+{
+ /* nothing to do */
+}
+
+/* Called by gdb to load a program into memory. */
+
+int
+sim_load (prog, from_tty)
+ char *prog;
+ int from_tty;
+{
+ bfd *abfd;
+
+ /* See if the file is for the h8/300 or h8/300h. */
+ /* ??? This may not be the most efficient way. The z8k simulator
+ does this via a different mechanism (INIT_EXTRA_SYMTAB_INFO). */
+ if ((abfd = bfd_openr (prog, "coff-h8300")) != 0)
+ {
+ if (bfd_check_format (abfd, bfd_object))
+ {
+ set_h8300h (abfd->arch_info->mach == bfd_mach_h8300h
+ || abfd->arch_info->mach == bfd_mach_h8300s);
+ }
+ bfd_close (abfd);
+ }
+
+ /* If we're using gdb attached to the simulator, then we have to
+ reallocate memory for the simulator.
+
+ When gdb first starts, it calls fetch_registers (among other
+ functions), which in turn calls init_pointers, which allocates
+ simulator memory.
+
+ The problem is when we do that, we don't know whether we're
+ debugging an h8/300 or h8/300h program.
+
+ This is the first point at which we can make that determination,
+ so we just reallocate memory now; this will also allow us to handle
+ switching between h8/300 and h8/300h programs without exiting
+ gdb. */
+ if (h8300hmode)
+ memory_size = H8300H_MSIZE;
+ else
+ memory_size = H8300_MSIZE;
+
+ if (cpu.memory)
+ free (cpu.memory);
+ if (cpu.cache_idx)
+ free (cpu.cache_idx);
+ if (cpu.eightbit)
+ free (cpu.eightbit);
+
+ cpu.memory = (unsigned char *) calloc (sizeof (char), memory_size);
+ cpu.cache_idx = (unsigned short *) calloc (sizeof (short), memory_size);
+ cpu.eightbit = (unsigned char *) calloc (sizeof (char), 256);
+
+ /* `msize' must be a power of two */
+ if ((memory_size & (memory_size - 1)) != 0)
+ abort ();
+ cpu.mask = memory_size - 1;
+
+ /* Return non-zero so gdb will handle it. */
+ return 1;
+}
+
+void
+sim_create_inferior (start_address, argv, env)
+ SIM_ADDR start_address;
+ char **argv;
+ char **env;
+{
+ cpu.pc = start_address;
+}
+
+void
+sim_do_command (cmd)
+ char *cmd;
+{
+ printf_filtered ("This simulator does not accept any commands.\n");
+}
+
+
+
+void
+sim_set_callbacks (ptr)
+struct host_callback_struct *ptr;
+{
+
+}
+
projects / deliverable / binutils-gdb.git / blobdiff