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r8c.opc
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/* r8c.opc --- semantics for r8c opcodes. -*- mode: c -*-
Copyright (C) 2005-2024 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
This file is part of the GNU simulators.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* This must come before any other includes. */
#include "defs.h"
#include <stdio.h>
#include <stdlib.h>
#include "ansidecl.h"
#include "cpu.h"
#include "mem.h"
#include "misc.h"
#include "int.h"
#define tprintf if (trace) printf
static unsigned char
getbyte (void)
{
int tsave = trace;
unsigned char b;
if (trace == 1)
trace = 0;
b = mem_get_pc ();
regs.r_pc ++;
trace = tsave;
return b;
}
#define M16C_ONLY() /* FIXME: add something here */
#define GETBYTE() (op[opi++] = getbyte())
#define UNSUPPORTED() unsupported("unsupported", orig_pc)
#define NOTYET() unsupported("unimplemented", orig_pc)
static void
unsupported (char *tag, int orig_pc)
{
int i;
printf("%s opcode at %08x\n", tag, orig_pc);
regs.r_pc = orig_pc;
for (i=0; i<2; i++)
{
int b = mem_get_pc();
printf(" %s", bits(b>>4, 4));
printf(" %s", bits(b, 4));
regs.r_pc ++;
}
printf("\n");
regs.r_pc = orig_pc;
for (i=0; i<6; i++)
{
printf(" %02x", mem_get_pc ());
regs.r_pc ++;
}
printf("\n");
exit(1);
}
static int
IMM (int bw)
{
int rv = getbyte ();
if (bw)
rv = rv + 256 * getbyte();
if (bw == 2)
rv = rv + 65536 * getbyte();
return rv;
}
#define IMM4() (immm >= 8 ? 7 - immm : immm + 1)
#define UNARY_SOP \
dc = decode_srcdest4 (dest, w); \
v = sign_ext (get_src (dc), w?16:8);
#define UNARY_UOP \
dc = decode_srcdest4 (dest, w); \
v = get_src (dc);
#define BINARY_SOP \
sc = decode_srcdest4 (srcx, w); \
dc = decode_srcdest4 (dest, w); \
a = sign_ext (get_src (sc), w?16:8); \
b = sign_ext (get_src (dc), w?16:8);
#define BINARY_UOP \
sc = decode_srcdest4 (srcx, w); \
dc = decode_srcdest4 (dest, w); \
a = get_src (sc); \
b = get_src (dc);
#define carry (FLAG_C ? 1 : 0)
static void
cmp (int d, int s, int w)
{
int a, b, f=0;
int mask = w ? 0xffff : 0xff;
a = d - s;
b = sign_ext (d, w?16:8) - sign_ext (s, w?16:8);
tprintf ("cmp: %x - %x = %08x, %x - %x = %d\n",
d, s, a,
sign_ext(d,w?16:8), sign_ext(s,w?16:8), b);
if (b == 0)
f |= FLAGBIT_Z;
if (b & (w ? 0x8000 : 0x80))
f |= FLAGBIT_S;
if ((d & mask) >= (s & mask))
f |= FLAGBIT_C;
if (b < (w ? -32768 : -128) || b > (w ? 32767 : 127))
f |= FLAGBIT_O;
set_flags (FLAGBIT_Z | FLAGBIT_S | FLAGBIT_O | FLAGBIT_C, f);
}
static void
div_op (int s, int u, int x, int w)
{
srcdest sc;
int v, a, b;
if (s == -1)
s = IMM(w);
else
{
sc = decode_srcdest4 (s, w);
s = get_src (sc);
}
v = get_reg (w ? r2r0 : r0);
if (!u)
{
s = sign_ext (s, w ? 16 : 8);
v = sign_ext (v, w ? 16 : 8);
}
if (s == 0)
{
set_flags (FLAGBIT_O, FLAGBIT_O);
return;
}
if (u)
{
a = (unsigned int)v / (unsigned int)s;
b = (unsigned int)v % (unsigned int)s;
}
else
{
a = v / s;
b = v % s;
}
if (x)
{
if ((s > 0 && b < 0)
|| (s < 0 && b > 0))
{
a --;
b += s;
}
}
tprintf ("%d / %d = %d rem %d\n", v, s, a, b);
if ((!u && (a > (w ? 32767 : 127)
|| a < (w ? -32768 : -129)))
|| (u && (a > (w ? 65536 : 255))))
set_flags (FLAGBIT_O, FLAGBIT_O);
else
set_flags (FLAGBIT_O, 0);
put_reg (w ? r0 : r0l, a);
put_reg (w ? r2 : r0h, b);
}
static void
rot_op (srcdest sd, int rotc, int count)
{
int mask = (sd.bytes == 2) ? 0xffff : 0xff;
int msb = (sd.bytes == 2) ? 0x8000 : 0x80;
int v = get_src (sd);
int c = carry, ct;
tprintf("%s %x by %d\n", rotc ? "rotc" : "rot", v, count);
tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
while (count > 0)
{
ct = (v & msb) ? 1 : 0;
v <<= 1;
v |= rotc ? c : ct;
v &= mask;
c = ct;
tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
count --;
}
while (count < 0)
{
ct = v & 1;
v >>= 1;
v |= (rotc ? c : ct) * msb;
c = ct;
tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
count ++;
}
put_dest (sd, v);
set_szc (v, sd.bytes, c);
}
static void
shift_op (srcdest sd, int arith, int count)
{
int mask = (sd.bytes == 2) ? 0xffff : 0xff;
int msb = (sd.bytes == 2) ? 0x8000 : 0x80;
int v = get_src (sd);
int c = 0;
if (sd.bytes == 4)
{
mask = 0xffffffffU;
msb = 0x80000000U;
if (count > 16 || count < -16)
{
fprintf(stderr, "Error: SI shift of %d undefined\n", count);
exit(1);
}
if (count > 16)
count = (count - 1) % 16 + 1;
if (count < -16)
count = -((-count - 1) % 16 + 1);
}
tprintf("%s %x by %d\n", arith ? "sha" : "shl", v, count);
tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
while (count > 0)
{
c = (v & msb) ? 1 : 0;
v <<= 1;
v &= mask;
tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
count --;
}
while (count < 0)
{
c = v & 1;
if (arith)
v = (v & msb) | (v >> 1);
else
v = (v >> 1) & (msb - 1);
tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
count ++;
}
put_dest (sd, v);
set_szc (v, sd.bytes, c);
}
#define MATH_OP(dc,s,c,op,carryrel) \
a = get_src(dc); \
b = s & b2mask[dc.bytes]; \
v2 = a op b op c; \
tprintf("0x%x " #op " 0x%x " #op " 0x%x = 0x%x\n", a, b, c, v2); \
a = sign_ext (a, dc.bytes * 8); \
b = sign_ext (s, dc.bytes * 8); \
v = a op b op c; \
tprintf("%d " #op " %d " #op " %d = %d\n", a, b, c, v); \
set_oszc (v, dc.bytes, v2 carryrel); \
put_dest (dc, v2);
#define BIT_OP(field,expr) \
dc = decode_bit (field); \
b = get_bit (dc); \
v = expr; \
tprintf ("b=%d, carry=%d, %s = %d\n", b, carry, #expr, v); \
put_bit (dc, v);
#define BIT_OPC(field,expr) \
dc = decode_bit (field); \
b = get_bit (dc); \
v = expr; \
tprintf ("b=%d, carry=%d, %s = %d\n", b, carry, #expr, v); \
set_c (v);
/* The "BMcnd dest" opcode uses a different encoding for the */
/* condition than other opcodes. */
static int bmcnd_cond_map[] = {
0, 1, 2, 3, 8, 9, 10, 11, 4, 5, 6, 7, 12, 13, 14, 15
};
int
decode_r8c (void)
{
unsigned char op[40];
int opi = 0;
int v, v2, a, b;
int orig_pc = get_reg (pc);
srcdest sc, dc;
int imm;
step_result = M32C_MAKE_STEPPED ();
tprintf("trace: decode pc = %05x\n", orig_pc);
/** VARY dst 011 100 101 110 111 */
/** 0111 011w 1111 dest ABS.size dest */
UNARY_SOP;
a = v<0 ? -v : v;
tprintf("abs(%d) = %d\n", v, a);
set_osz(a, w+1);
put_dest (dc, a);
/** 0111 011w 0110 dest ADC.size #IMM,dest */
dc = decode_srcdest4(dest, w);
imm = IMM(w);
MATH_OP (dc, imm, carry, +, > (w?0xffff:0xff));
/** 1011 000w srcx dest ADC.size src,dest */
sc = decode_srcdest4(srcx, w);
dc = decode_srcdest4(dest, w);
b = get_src (sc);
MATH_OP (dc, b, carry, +, > (w?0xffff:0xff));
/** 0111 011w 1110 dest ADCF.size dest */
dc = decode_srcdest4(dest, w);
MATH_OP (dc, 0, carry, +, > (w?0xffff:0xff));
/** 0111 011w 0100 dest ADD.size:G #imm,dest */
dc = decode_srcdest4(dest, w);
imm = IMM(w);
MATH_OP (dc, imm, 0, +, > (w?0xffff:0xff));
/** 1100 100w immm dest ADD.size:Q #IMM,dest */
dc = decode_srcdest4(dest, w);
imm = sign_ext (immm, 4);
MATH_OP (dc, imm, 0, +, > (w?0xffff:0xff));
/** 1000 0dst ADD.B:S #IMM8,dst */
imm = IMM(0);
dc = decode_dest3 (dst, 0);
MATH_OP (dc, imm, 0, +, > 0xff);
/** 1010 000w srcx dest ADD.size:G src,dest */
sc = decode_srcdest4(srcx, w);
dc = decode_srcdest4(dest, w);
b = get_src (sc);
MATH_OP (dc, b, 0, +, > (w?0xffff:0xff));
/** 0010 0d sr ADD.B:S src,R0L/R0H */
sc = decode_src2 (sr, 0, d);
dc = decode_dest1 (d, 0);
b = get_src (sc);
MATH_OP (dc, b, 0, +, > 0xff);
/** 0111 110w 1110 1011 ADD.size:G #IMM,sp */
dc = reg_sd (sp);
imm = sign_ext (IMM(w), w?16:8);
MATH_OP (dc, imm, 0, +, > 0xffff);
/** 0111 1101 1011 immm ADD.size:Q #IMM,sp */
dc = reg_sd (sp);
imm = sign_ext (immm, 4);
MATH_OP (dc, imm, 0, +, > 0xffff);
/** 1111 100w immm dest ADJNZ.size #IMM,dest,label */
UNARY_UOP;
imm = sign_ext(immm, 4);
tprintf("%x + %d = %x\n", v, imm, v+imm);
v += imm;
put_dest (dc, v);
a = sign_ext (IMM(0), 8);
if ((v & (w ? 0xffff : 0xff)) != 0)
{
tprintf("jmp: %x + 2 + %d = ", get_reg (pc), a);
put_reg (pc, orig_pc + 2 + a);
tprintf("%x\n", get_reg (pc));
}
/** 0111 011w 0010 dest AND.size:G #IMM,dest */
UNARY_UOP;
imm = IMM(w);
tprintf ("%x & %x = %x\n", v, imm, v & imm);
v &= imm;
set_sz (v, w+1);
put_dest (dc, v);
/** 1001 0dst AND.B:S #IMM8,dest */
imm = IMM(0);
dc = decode_dest3 (dst, 0);
v = get_src (dc);
tprintf("%x & %x = %x\n", v, imm, v & imm);
v &= imm;
set_sz (v, 1);
put_dest (dc, v);
/** 1001 000w srcx dest AND.size:G src.dest */
BINARY_UOP;
tprintf ("%x & %x = %x\n", a, b, a & b);
v = a & b;
set_sz (v, w+1);
put_dest (dc, v);
/** 0001 0d sr AND.B:S src,R0L/R0H */
sc = decode_src2 (sr, 0, d);
dc = decode_dest1 (d, 0);
a = get_src (sc);
b = get_src (dc);
v = a & b;
tprintf("%x & %x = %x\n", a, b, v);
set_sz (v, 1);
put_dest (dc, v);
/** 0111 1110 0100 srcx BAND src */
BIT_OPC (srcx, b & carry);
/** 0111 1110 1000 dest BCLR:G dest */
dc = decode_bit (dest);
put_bit (dc, 0);
/** 0100 0bit BCLR:S bit,base:11[SB] */
dc = decode_bit11 (bit);
put_bit (dc, 0);
/** 0111 1110 0010 dest BMcnd dest */
dc = decode_bit (dest);
if (condition_true (bmcnd_cond_map [IMM (0) & 15]))
put_bit (dc, 1);
else
put_bit (dc, 0);
/** 0111 1101 1101 cond BMcnd C */
if (condition_true (cond))
set_c (1);
else
set_c (0);
/** 0111 1110 0101 srcx BNAND src */
BIT_OPC (srcx, (!b) & carry);
/** 0111 1110 0111 srcx BNOR src */
BIT_OPC (srcx, (!b) | carry);
/** 0111 1110 1010 dest BNOT:G dest */
BIT_OP (dest, !b);
/** 0101 0bit BNOT:S bit,base:11[SB] */
dc = decode_bit11 (bit);
put_bit (dc, !get_bit (dc));
/** 0111 1110 0011 srcx BNTST src */
dc = decode_bit (srcx);
b = get_bit (dc);
set_zc (!b, !b);
/** 0111 1110 1101 srcx BNXOR src */
BIT_OPC (srcx, !b ^ carry);
/** 0111 1110 0110 srcx BOR src */
BIT_OPC (srcx, b | carry);
/** 0000 0000 BRK */
/* We report the break to our caller with the PC still pointing at the
breakpoint instruction. */
put_reg (pc, orig_pc);
if (verbose)
printf("[break]\n");
return M32C_MAKE_HIT_BREAK ();
/** 0111 1110 1001 dest BSET:G dest */
dc = decode_bit (dest);
put_bit (dc, 1);
/** 0100 1bit BSET:S bit,base:11[SB] */
dc = decode_bit11 (bit);
put_bit (dc, 1);
/** 0111 1110 1011 srcx BTST:G src */
dc = decode_bit (srcx);
b = get_bit (dc);
set_zc (!b, b);
/** 0101 1bit BTST:S bit,base:11[SB] */
dc = decode_bit11 (bit);
b = get_bit (dc);
set_zc (!b, b);
/** 0111 1110 0000 dest BTSTC dest */
dc = decode_bit (dest);
b = get_bit (dc);
set_zc (!b, b);
put_bit (dc, 0);
/** 0111 1110 0001 dest BTSTS dest */
dc = decode_bit (dest);
b = get_bit (dc);
set_zc (!b, b);
put_bit (dc, 1);
/** 0111 1110 1100 srcx BXOR src */
BIT_OPC (srcx, b ^ carry);
/** 0111 011w 1000 dest CMP.size:G #IMM,dest */
UNARY_UOP;
imm = IMM(w);
cmp (v, imm, w);
/** 1101 000w immm dest CMP.size:Q #IMM,dest */
UNARY_UOP;
immm = sign_ext (immm, 4);
cmp (v, immm, w);
/** 1110 0dst CMP.B:S #IMM8,dest */
imm = IMM(0);
dc = decode_dest3 (dst, 0);
v = get_src (dc);
cmp (v, imm, 0);
/** 1100 000w srcx dest CMP.size:G src,dest */
BINARY_UOP;
cmp(b, a, w);
/** 0011 1d sr CMP.B:S src,R0L/R0H */
sc = decode_src2 (sr, 0, d);
dc = decode_dest1 (d, 0);
a = get_src (sc);
b = get_src (dc);
cmp (b, a, 0);
/** 0111 110w 1110 i1c s DADC,DADD,DSBB,DSUB */
/* w = width, i = immediate, c = carry, s = subtract */
{
int src = i ? IMM(w) : get_reg (w ? r1 : r0h);
int dest = get_reg (w ? r0 : r0l);
int res;
src = bcd2int(src, w);
dest = bcd2int(dest, w);
tprintf("decimal: %d %s %d", dest, s?"-":"+", src);
if (c)
tprintf(" c=%d", carry);
if (!s)
{
res = dest + src;
if (c)
res += carry;
c = res > (w ? 9999 : 99);
}
else
{
res = dest - src;
if (c)
res -= (1-carry);
c = res >= 0;
if (res < 0)
res += w ? 10000 : 100;
}
res = int2bcd (res, w);
tprintf(" = %x\n", res);
set_szc (res, w+1, c);
put_reg (w ? r0 : r0l, res);
}
/** 1010 1dst DEC.B dest */
dc = decode_dest3 (dst, 0);
v = get_src (dc);
tprintf("%x -- = %x\n", v, v-1);
v --;
set_sz (v, 1);
put_dest (dc, v);
/** 1111 d010 DEC.W dest */
v = get_reg (d ? a1 : a0);
tprintf("%x -- = %x\n", v, v-1);
v --;
set_sz (v, 2);
put_reg (d ? a1 : a0, v);
/** 0111 110w 1110 0001 DIV.size #IMM */
div_op (-1, 0, 0, w);
/** 0111 011w 1101 srcx DIV.size src */
div_op (srcx, 0, 0, w);
/** 0111 110w 1110 0000 DIVU.size #IMM */
div_op (-1, 1, 0, w);
/** 0111 011w 1100 srcx DIVU.size src */
div_op (srcx, 1, 0, w);
/** 0111 110w 1110 0011 DIVX.size #IMM */
div_op (-1, 0, 1, w);
/** 0111 011w 1001 srcx DIVX.size src */
div_op (srcx, 0, 1, w);
/** 0111 1100 1111 0010 ENTER #IMM8 */
imm = IMM(0);
put_reg (sp, get_reg (sp) - 2);
mem_put_hi (get_reg (sp), get_reg (fb));
put_reg (fb, get_reg (sp));
put_reg (sp, get_reg (sp) - imm);
/** 0111 1101 1111 0010 EXITD */
put_reg (sp, get_reg (fb));
put_reg (fb, mem_get_hi (get_reg (sp)));
put_reg (sp, get_reg (sp) + 2);
put_reg (pc, mem_get_psi (get_reg (sp)));
put_reg (sp, get_reg (sp) + 3);
/** 0111 1100 0110 dest EXTS.B dest */
dc = decode_srcdest4 (dest, 0);
v = sign_ext (get_src (dc), 8);
dc = widen_sd (dc);
put_dest (dc, v);
set_sz (v, 1);
/** 0111 1100 1111 0011 EXTS.W R0 */
v = sign_ext (get_reg (r0), 16);
put_reg (r2r0, v);
set_sz (v, 2);
/** 1110 1011 0flg 0101 FCLR dest */
set_flags (1 << flg, 0);
/** 1110 1011 0flg 0100 FSET dest */
set_flags (1 << flg, 1 << flg);
/** 1010 0dst INC.B dest */
dc = decode_dest3 (dst, 0);
v = get_src (dc);
tprintf("%x ++ = %x\n", v, v+1);
v ++;
set_sz (v, 1);
put_dest (dc, v);
/** 1011 d010 INC.W dest */
v = get_reg (d ? a1 : a0);
tprintf("%x ++ = %x\n", v, v+1);
v ++;
set_sz (v, 2);
put_reg (d ? a1 : a0, v);
/** 1110 1011 11vector INT #imm */
trigger_based_interrupt (vector);
/** 1111 0110 INTO */
if (FLAG_O)
trigger_fixed_interrupt (0xffe0);
/** 0110 1cnd Jcnd label */
v = sign_ext (IMM(0), 8);
if (condition_true (cnd))
put_reg (pc, orig_pc + 1 + v);
/** 0111 1101 1100 cond Jcnd label */
v = sign_ext (IMM(0), 8);
if (condition_true (cond))
put_reg (pc, orig_pc + 2 + v);
/** 0110 0dsp JMP.S label */
put_reg (pc, orig_pc + 2 + dsp);
/** 1111 1110 JMP.B label */
imm = sign_ext (IMM(0), 8);
if (imm == -1)
{
if (verbose)
printf("[jmp-to-self detected as exit]\n");
return M32C_MAKE_HIT_BREAK ();
}
put_reg (pc, orig_pc + 1 + imm);
/** 1111 0100 JMP.W label */
imm = sign_ext (IMM(1), 16);
put_reg (pc, orig_pc + 1 + imm);
/** 1111 1100 JMP.A label */
imm = IMM(2);
put_reg (pc, imm);
/** 0111 1101 0010 srcx JMPI.W src */
sc = decode_jumpdest (srcx, 1);
a = get_src (sc);
a = sign_ext (a, 16);
put_reg (pc, orig_pc + a);
/** 0111 1101 0000 srcx JMPI.A src */
sc = decode_jumpdest (srcx, 0);
a = get_src (sc);
put_reg (pc, a);
/** 1110 1110 JMPS #IMM8 */
M16C_ONLY();
imm = IMM(0);
a = 0xf0000 + mem_get_hi (0xffffe - imm * 2);
put_reg (pc, a);
/** 1111 0101 JSR.W label */
imm = sign_ext (IMM(1), 16);
put_reg (sp, get_reg (sp) - 3);
mem_put_psi (get_reg (sp), get_reg (pc));
put_reg (pc, orig_pc + imm + 1);
/** 1111 1101 JSR.A label */
imm = IMM(2);
put_reg (sp, get_reg (sp) - 3);
mem_put_psi (get_reg (sp), get_reg (pc));
put_reg (pc, imm);
/** 0111 1101 0011 srcx JSRI.W src */
sc = decode_jumpdest (srcx, 1);
a = get_src (sc);
a = sign_ext (a, 16);
put_reg (sp, get_reg (sp) - 3);
mem_put_psi (get_reg (sp), get_reg (pc));
put_reg (pc, orig_pc + a);
/** 0111 1101 0001 srcx JSRI.A src */
sc = decode_jumpdest (srcx, 0);
a = get_src (sc);
put_reg (sp, get_reg (sp) - 3);
mem_put_psi (get_reg (sp), get_reg (pc));
put_reg (pc, a);
/** 1110 1111 JSRS #IMM8 */
M16C_ONLY();
imm = IMM(0);
a = 0xf0000 + mem_get_hi (0xffffe - imm * 2);
put_reg (sp, get_reg (sp) - 3);
mem_put_psi (get_reg (sp), get_reg (pc));
put_reg (pc, a);
/** 1110 1011 0reg 0000 LDC #IMM16,dest */
dc = decode_cr (reg);
imm = IMM(1);
put_dest (dc, imm);
/** 0111 1010 1reg srcx LDC src,dest */
dc = decode_cr (reg);
sc = decode_srcdest4 (srcx,1);
put_dest (dc, get_src (sc));
/** 0111 1100 1111 0000 LDCTX abs16,abs20 */
NOTYET();
/** 0111 010w 1000 dest LDE.size abs20,dest */
dc = decode_srcdest4 (dest, w);
imm = IMM(2);
if (w)
v = mem_get_hi (imm);
else
v = mem_get_qi (imm);
put_dest (dc, v);
/** 0111 010w 1001 dest LDE.size dsp:20[a0], dest */
dc = decode_srcdest4 (dest, w);
imm = IMM(2) + get_reg (a0);
if (w)
v = mem_get_hi (imm);
else
v = mem_get_qi (imm);
put_dest (dc, v);
/** 0111 010w 1010 dest LDE.size [a1a0],dest */
dc = decode_srcdest4 (dest, w);
imm = get_reg (a1a0);
if (w)
v = mem_get_hi (imm);
else
v = mem_get_qi (imm);
put_dest (dc, v);
/** 0111 1101 1010 0flg LDIPL #IMM */
set_flags (0x700, flg*0x100);
/** 0111 010w 1100 dest MOV.size:G #IMM,dest */
dc = decode_srcdest4 (dest, w);
imm = IMM(w);
v = imm;
tprintf("%x = %x\n", v, v);
set_sz(v, w+1);
put_dest (dc, v);
/** 1101 100w immm dest MOV.size:Q #IMM,dest */
dc = decode_srcdest4 (dest, w);
v = sign_ext (immm, 4);
tprintf ("%x = %x\n", v, v);
set_sz (v, w+1);
put_dest (dc, v);
/** 1100 0dst MOV.B:S #IMM8,dest */
imm = IMM(0);
dc = decode_dest3 (dst, 0);
v = imm;
tprintf("%x = %x\n", v, v);
set_sz (v, 1);
put_dest (dc, v);
/** 1w10 d010 MOV.size:S #IMM,dest */
/* Note that for w, 0=W and 1=B unlike the usual meaning. */
v = IMM(1-w);
tprintf("%x = %x\n", v, v);
set_sz (v, 2-w);
put_reg (d ? a1 : a0, v);
/** 1011 0dst MOV.B:Z #0,dest */
dc = decode_dest3 (dst, 0);
v = 0;
set_sz (v, 1);
put_dest (dc, v);
/** 0111 001w srcx dest MOV.size:G src,dest */
sc = decode_srcdest4 (srcx, w);
dc = decode_srcdest4 (dest, w);
v = get_src (sc);
set_sz (v, w+1);
put_dest (dc, v);
/** 0011 0d sr MOV.B:S src,dest */
sc = decode_src2 (sr, 0, d);
v = get_src (sc);
set_sz (v, 1);
put_reg (d ? a1 : a0, v);
/** 0000 0s ds MOV.B:S R0L/R0H,dest */
if (ds == 0)
UNSUPPORTED();
dc = decode_src2 (ds, 0, s);
v = get_reg (s ? r0h : r0l);
set_sz (v, 1);
put_dest (dc, v);
/** 0000 1d sr MOV.B:S src,R0L/R0H */
sc = decode_src2 (sr, 0, d);
v = get_src (sc);
set_sz (v, 1);
put_reg (d ? r0h : r0l, v);
/** 0111 010w 1011 dest MOV.size:G dsp:8[SP], dest */
dc = decode_srcdest4 (dest, w);
imm = IMM(0);
a = get_reg (sp) + sign_ext (imm, 8);
a &= addr_mask;
if (w)
v = mem_get_hi (a);
else
v = mem_get_qi (a);
set_sz (v, w+1);
put_dest (dc, v);
/** 0111 010w 0011 srcx MOV.size:G src, disp8[SP] */
sc = decode_srcdest4 (srcx, w);
imm = IMM(0);
a = get_reg (sp) + sign_ext (imm, 8);
a &= addr_mask;
v = get_src (sc);
if (w)
mem_put_hi (a, v);
else
mem_put_qi (a, v);
set_sz (v, w+1);
/** 1110 1011 0reg 1src MOVA src,dest */
{
static reg_id map[] = { r0, r1, r2, r3, a0, a1, 0, 0 };
sc = decode_srcdest4 (8 + src, 0);
put_reg (map[reg], sc.u.addr);
}
/** 0111 1100 10hl dest MOVdir R0L,dest */
if (dest == 0 || dest == 4 || dest == 5)
UNSUPPORTED();
dc = decode_srcdest4 (dest, 0);
a = get_src (dc);
b = get_reg (r0l);
switch (hl)