mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-30 13:33:53 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
784 lines
14 KiB
C
784 lines
14 KiB
C
/* srcdest.c --- decoding M32C addressing modes.
|
|
|
|
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 "libiberty.h"
|
|
#include "cpu.h"
|
|
#include "mem.h"
|
|
|
|
static int src_indirect = 0;
|
|
static int dest_indirect = 0;
|
|
static int src_addend = 0;
|
|
static int dest_addend = 0;
|
|
|
|
static int
|
|
disp8 (void)
|
|
{
|
|
int rv;
|
|
int tsave = trace;
|
|
|
|
if (trace == 1)
|
|
trace = 0;
|
|
rv = mem_get_qi (get_reg (pc));
|
|
regs.r_pc++;
|
|
trace = tsave;
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
disp16 (void)
|
|
{
|
|
int rv;
|
|
int tsave = trace;
|
|
|
|
if (trace == 1)
|
|
trace = 0;
|
|
rv = mem_get_hi (get_reg (pc));
|
|
regs.r_pc += 2;
|
|
trace = tsave;
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
disp24 (void)
|
|
{
|
|
int rv;
|
|
int tsave = trace;
|
|
|
|
if (trace == 1)
|
|
trace = 0;
|
|
rv = mem_get_psi (get_reg (pc));
|
|
regs.r_pc += 3;
|
|
trace = tsave;
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
disp20 (void)
|
|
{
|
|
return disp24 () & 0x000fffff;
|
|
}
|
|
|
|
const char *
|
|
bits (int v, int b)
|
|
{
|
|
static char buf[17];
|
|
char *bp = buf + 16;
|
|
*bp = 0;
|
|
while (b)
|
|
{
|
|
*--bp = (v & 1) ? '1' : '0';
|
|
v >>= 1;
|
|
b--;
|
|
}
|
|
return bp;
|
|
}
|
|
|
|
static const char *the_bits = 0;
|
|
|
|
void
|
|
decode_indirect (int si, int di)
|
|
{
|
|
src_indirect = si;
|
|
dest_indirect = di;
|
|
if (trace && (si || di))
|
|
printf ("indirect: s:%d d:%d\n", si, di);
|
|
}
|
|
|
|
void
|
|
decode_index (int sa, int da)
|
|
{
|
|
src_addend = sa;
|
|
dest_addend = da;
|
|
if (trace && (sa || da))
|
|
printf ("index: s:%d d:%d\n", sa, da);
|
|
}
|
|
|
|
srcdest
|
|
decode_srcdest4 (int destcode, int bw)
|
|
{
|
|
srcdest sd;
|
|
static const char *dc_wnames[16] = { "r0", "r1", "r2", "r3",
|
|
"a0", "a1", "[a0]", "[a1]",
|
|
"disp8[a0]", "disp8[a1]", "disp8[sb]", "disp8[fb]",
|
|
"disp16[a0]", "disp16[a1]", "disp16[sb]", "disp16"
|
|
};
|
|
static const char *dc_bnames[4] = { "r0l", "r0h", "r1l", "r1h" };;
|
|
|
|
sd.bytes = bw ? 2 : 1;
|
|
sd.mem = (destcode >= 6) ? 1 : 0;
|
|
|
|
if (trace)
|
|
{
|
|
const char *n = dc_wnames[destcode];
|
|
if (bw == 0 && destcode <= 3)
|
|
n = dc_bnames[destcode];
|
|
if (!the_bits)
|
|
the_bits = bits (destcode, 4);
|
|
printf ("decode: %s (%d) : %s\n", the_bits, destcode, n);
|
|
the_bits = 0;
|
|
}
|
|
|
|
switch (destcode)
|
|
{
|
|
case 0x0:
|
|
sd.u.reg = bw ? r0 : r0l;
|
|
break;
|
|
case 0x1:
|
|
sd.u.reg = bw ? r1 : r0h;
|
|
break;
|
|
case 0x2:
|
|
sd.u.reg = bw ? r2 : r1l;
|
|
break;
|
|
case 0x3:
|
|
sd.u.reg = bw ? r3 : r1h;
|
|
break;
|
|
case 0x4:
|
|
sd.u.reg = a0;
|
|
break;
|
|
case 0x5:
|
|
sd.u.reg = a1;
|
|
break;
|
|
case 0x6:
|
|
sd.u.addr = get_reg (a0);
|
|
break;
|
|
case 0x7:
|
|
sd.u.addr = get_reg (a1);
|
|
break;
|
|
case 0x8:
|
|
sd.u.addr = get_reg (a0) + disp8 ();
|
|
break;
|
|
case 0x9:
|
|
sd.u.addr = get_reg (a1) + disp8 ();
|
|
break;
|
|
case 0xa:
|
|
sd.u.addr = get_reg (sb) + disp8 ();
|
|
break;
|
|
case 0xb:
|
|
sd.u.addr = get_reg (fb) + sign_ext (disp8 (), 8);
|
|
break;
|
|
case 0xc:
|
|
sd.u.addr = get_reg (a0) + disp16 ();
|
|
break;
|
|
case 0xd:
|
|
sd.u.addr = get_reg (a1) + disp16 ();
|
|
break;
|
|
case 0xe:
|
|
sd.u.addr = get_reg (sb) + disp16 ();
|
|
break;
|
|
case 0xf:
|
|
sd.u.addr = disp16 ();
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
if (sd.mem)
|
|
sd.u.addr &= addr_mask;
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
decode_jumpdest (int destcode, int w)
|
|
{
|
|
srcdest sd;
|
|
static const char *dc_wnames[16] = { "r0", "r1", "r2", "r3",
|
|
"a0", "a1", "[a0]", "[a1]",
|
|
"disp8[a0]", "disp8[a1]", "disp8[sb]", "disp8[fb]",
|
|
"disp20[a0]", "disp20[a1]", "disp16[sb]", "abs16"
|
|
};
|
|
static const char *dc_anames[4] = { "r0l", "r0h", "r1l", "r1h" };
|
|
|
|
sd.bytes = w ? 2 : 3;
|
|
sd.mem = (destcode >= 6) ? 1 : 0;
|
|
|
|
if (trace)
|
|
{
|
|
const char *n = dc_wnames[destcode];
|
|
if (w == 0 && destcode <= 3)
|
|
n = dc_anames[destcode];
|
|
if (!the_bits)
|
|
the_bits = bits (destcode, 4);
|
|
printf ("decode: %s : %s\n", the_bits, n);
|
|
the_bits = 0;
|
|
}
|
|
|
|
switch (destcode)
|
|
{
|
|
case 0x0:
|
|
sd.u.reg = w ? r0 : r2r0;
|
|
break;
|
|
case 0x1:
|
|
sd.u.reg = w ? r1 : r2r0;
|
|
break;
|
|
case 0x2:
|
|
sd.u.reg = w ? r2 : r3r1;
|
|
break;
|
|
case 0x3:
|
|
sd.u.reg = w ? r3 : r3r1;
|
|
break;
|
|
case 0x4:
|
|
sd.u.reg = w ? a0 : a1a0;
|
|
break;
|
|
case 0x5:
|
|
sd.u.reg = w ? a1 : a1a0;
|
|
break;
|
|
case 0x6:
|
|
sd.u.addr = get_reg (a0);
|
|
break;
|
|
case 0x7:
|
|
sd.u.addr = get_reg (a1);
|
|
break;
|
|
case 0x8:
|
|
sd.u.addr = get_reg (a0) + disp8 ();
|
|
break;
|
|
case 0x9:
|
|
sd.u.addr = get_reg (a1) + disp8 ();
|
|
break;
|
|
case 0xa:
|
|
sd.u.addr = get_reg (sb) + disp8 ();
|
|
break;
|
|
case 0xb:
|
|
sd.u.addr = get_reg (fb) + sign_ext (disp8 (), 8);
|
|
break;
|
|
case 0xc:
|
|
sd.u.addr = get_reg (a0) + disp20 ();
|
|
break;
|
|
case 0xd:
|
|
sd.u.addr = get_reg (a1) + disp20 ();
|
|
break;
|
|
case 0xe:
|
|
sd.u.addr = get_reg (sb) + disp16 ();
|
|
break;
|
|
case 0xf:
|
|
sd.u.addr = disp16 ();
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
if (sd.mem)
|
|
sd.u.addr &= addr_mask;
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
decode_dest3 (int destcode, int bw)
|
|
{
|
|
static char map[8] = { -1, -1, -1, 1, 0, 10, 11, 15 };
|
|
|
|
the_bits = bits (destcode, 3);
|
|
return decode_srcdest4 (map[destcode], bw);
|
|
}
|
|
|
|
srcdest
|
|
decode_src2 (int srccode, int bw, int d)
|
|
{
|
|
static char map[4] = { 0, 10, 11, 15 };
|
|
|
|
the_bits = bits (srccode, 2);
|
|
return decode_srcdest4 (srccode ? map[srccode] : 1 - d, bw);
|
|
}
|
|
|
|
static struct
|
|
{
|
|
reg_id b_regno;
|
|
reg_id w_regno;
|
|
int is_memory;
|
|
int disp_bytes;
|
|
char *name;
|
|
} modes23[] =
|
|
{
|
|
{
|
|
a0, a0, 1, 0, "[A0]"}, /* 0 0 0 0 0 */
|
|
{
|
|
a1, a1, 1, 0, "[A1]"}, /* 0 0 0 0 1 */
|
|
{
|
|
a0, a0, 0, 0, "A0"}, /* 0 0 0 1 0 */
|
|
{
|
|
a1, a1, 0, 0, "A1"}, /* 0 0 0 1 1 */
|
|
{
|
|
a0, a0, 1, 1, "dsp:8[A0]"}, /* 0 0 1 0 0 */
|
|
{
|
|
a1, a1, 1, 1, "dsp:8[A1]"}, /* 0 0 1 0 1 */
|
|
{
|
|
sb, sb, 1, 1, "dsp:8[SB]"}, /* 0 0 1 1 0 */
|
|
{
|
|
fb, fb, 1, -1, "dsp:8[FB]"}, /* 0 0 1 1 1 */
|
|
{
|
|
a0, a0, 1, 2, "dsp:16[A0]"}, /* 0 1 0 0 0 */
|
|
{
|
|
a1, a1, 1, 2, "dsp:16[A1]"}, /* 0 1 0 0 1 */
|
|
{
|
|
sb, sb, 1, 2, "dsp:16[SB]"}, /* 0 1 0 1 0 */
|
|
{
|
|
fb, fb, 1, -2, "dsp:16[FB]"}, /* 0 1 0 1 1 */
|
|
{
|
|
a0, a0, 1, 3, "dsp:24[A0]"}, /* 0 1 1 0 0 */
|
|
{
|
|
a1, a1, 1, 3, "dsp:24[A1]"}, /* 0 1 1 0 1 */
|
|
{
|
|
mem, mem, 1, 3, "abs24"}, /* 0 1 1 1 0 */
|
|
{
|
|
mem, mem, 1, 2, "abs16"}, /* 0 1 1 1 1 */
|
|
{
|
|
r0h, r2, 0, 0, "R0H/R2"}, /* 1 0 0 0 0 */
|
|
{
|
|
r1h, r3, 0, 0, "R1H/R3"}, /* 1 0 0 0 1 */
|
|
{
|
|
r0l, r0, 0, 0, "R0L/R0"}, /* 1 0 0 1 0 */
|
|
{
|
|
r1l, r1, 0, 0, "R1L/R1"}, /* 1 0 0 1 1 */
|
|
};
|
|
|
|
static srcdest
|
|
decode_sd23 (int bbb, int bb, int bytes, int ind, int add)
|
|
{
|
|
srcdest sd;
|
|
int code = (bbb << 2) | bb;
|
|
|
|
if (code >= ARRAY_SIZE (modes23))
|
|
abort ();
|
|
|
|
if (trace)
|
|
{
|
|
char *b1 = "";
|
|
char *b2 = "";
|
|
char ad[30];
|
|
if (ind)
|
|
{
|
|
b1 = "[";
|
|
b2 = "]";
|
|
}
|
|
if (add)
|
|
sprintf (ad, "%+d", add);
|
|
else
|
|
ad[0] = 0;
|
|
if (!the_bits)
|
|
the_bits = bits (code, 4);
|
|
printf ("decode: %s (%d) : %s%s%s%s\n", the_bits, code, b1,
|
|
modes23[code].name, ad, b2);
|
|
the_bits = 0;
|
|
}
|
|
|
|
sd.bytes = bytes;
|
|
sd.mem = modes23[code].is_memory;
|
|
if (sd.mem)
|
|
{
|
|
if (modes23[code].w_regno == mem)
|
|
sd.u.addr = 0;
|
|
else
|
|
sd.u.addr = get_reg (modes23[code].w_regno);
|
|
switch (modes23[code].disp_bytes)
|
|
{
|
|
case 1:
|
|
sd.u.addr += disp8 ();
|
|
break;
|
|
case 2:
|
|
sd.u.addr += disp16 ();
|
|
break;
|
|
case -1:
|
|
sd.u.addr += sign_ext (disp8 (), 8);
|
|
break;
|
|
case -2:
|
|
sd.u.addr += sign_ext (disp16 (), 16);
|
|
break;
|
|
case 3:
|
|
sd.u.addr += disp24 ();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (add)
|
|
sd.u.addr += add;
|
|
if (ind)
|
|
sd.u.addr = mem_get_si (sd.u.addr & membus_mask);
|
|
sd.u.addr &= membus_mask;
|
|
}
|
|
else
|
|
{
|
|
sd.u.reg = (bytes > 1) ? modes23[code].w_regno : modes23[code].b_regno;
|
|
if (bytes == 3 || bytes == 4)
|
|
{
|
|
switch (sd.u.reg)
|
|
{
|
|
case r0:
|
|
sd.u.reg = r2r0;
|
|
break;
|
|
case r1:
|
|
sd.u.reg = r3r1;
|
|
break;
|
|
case r2:
|
|
abort ();
|
|
case r3:
|
|
abort ();
|
|
default:;
|
|
}
|
|
}
|
|
|
|
}
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
decode_dest23 (int ddd, int dd, int bytes)
|
|
{
|
|
return decode_sd23 (ddd, dd, bytes, dest_indirect, dest_addend);
|
|
}
|
|
|
|
srcdest
|
|
decode_src23 (int sss, int ss, int bytes)
|
|
{
|
|
return decode_sd23 (sss, ss, bytes, src_indirect, src_addend);
|
|
}
|
|
|
|
srcdest
|
|
decode_dest2 (int dd, int bytes)
|
|
{
|
|
/* r0l/r0, abs16, dsp:8[SB], dsp:8[FB] */
|
|
static char map[4] = { 0x12, 0x0f, 0x06, 0x07 };
|
|
|
|
the_bits = bits (dd, 2);
|
|
return decode_sd23 (map[dd] >> 2, map[dd] & 3, bytes, dest_indirect,
|
|
dest_addend);
|
|
}
|
|
|
|
srcdest
|
|
decode_src3 (int sss, int bytes)
|
|
{
|
|
/* r0, r1, a0, a1, r2, r3, N/A, N/A */
|
|
static char map[8] = { 0x12, 0x13, 0x02, 0x03, 0x10, 0x11, 0, 0 };
|
|
|
|
the_bits = bits (sss, 3);
|
|
return decode_sd23 (map[sss] >> 2, map[sss] & 3, bytes, src_indirect,
|
|
src_addend);
|
|
}
|
|
|
|
srcdest
|
|
decode_dest1 (int destcode, int bw)
|
|
{
|
|
the_bits = bits (destcode, 1);
|
|
return decode_srcdest4 (destcode, bw);
|
|
}
|
|
|
|
srcdest
|
|
decode_cr (int crcode)
|
|
{
|
|
static int regcode[] = { 0, intbl, intbh, flags, isp, sp, sb, fb };
|
|
srcdest sd;
|
|
sd.mem = 0;
|
|
sd.bytes = 2;
|
|
sd.u.reg = regcode[crcode & 7];
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
decode_cr_b (int crcode, int bank)
|
|
{
|
|
/* FIXME: intbl, intbh, isp */
|
|
static int regcode[3][8] = {
|
|
{0, 0, flags, 0, 0, 0, 0, 0},
|
|
{intb, sp, sb, fb, 0, 0, 0, isp},
|
|
{0, 0, 0, 0, 0, 0, 0, 0}
|
|
};
|
|
srcdest sd;
|
|
sd.mem = 0;
|
|
sd.bytes = bank ? 3 : 2;
|
|
sd.u.reg = regcode[bank][crcode & 7];
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
widen_sd (srcdest sd)
|
|
{
|
|
sd.bytes *= 2;
|
|
if (!sd.mem)
|
|
switch (sd.u.reg)
|
|
{
|
|
case r0l:
|
|
sd.u.reg = r0;
|
|
break;
|
|
case r0:
|
|
sd.u.reg = r2r0;
|
|
break;
|
|
case r1l:
|
|
sd.u.reg = r1;
|
|
break;
|
|
case r1:
|
|
sd.u.reg = r3r1;
|
|
break;
|
|
case a0:
|
|
if (A16)
|
|
sd.u.reg = a1a0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
reg_sd (reg_id reg)
|
|
{
|
|
srcdest rv;
|
|
rv.bytes = reg_bytes[reg];
|
|
rv.mem = 0;
|
|
rv.u.reg = reg;
|
|
return rv;
|
|
}
|
|
|
|
int
|
|
get_src (srcdest sd)
|
|
{
|
|
int v;
|
|
if (sd.mem)
|
|
{
|
|
switch (sd.bytes)
|
|
{
|
|
case 1:
|
|
v = mem_get_qi (sd.u.addr);
|
|
break;
|
|
case 2:
|
|
v = mem_get_hi (sd.u.addr);
|
|
break;
|
|
case 3:
|
|
v = mem_get_psi (sd.u.addr);
|
|
break;
|
|
case 4:
|
|
v = mem_get_si (sd.u.addr);
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
v = get_reg (sd.u.reg);
|
|
switch (sd.bytes)
|
|
{
|
|
case 1:
|
|
v &= 0xff;
|
|
break;
|
|
case 2:
|
|
v &= 0xffff;
|
|
break;
|
|
case 3:
|
|
v &= 0xffffff;
|
|
break;
|
|
}
|
|
}
|
|
return v;
|
|
}
|
|
|
|
void
|
|
put_dest (srcdest sd, int v)
|
|
{
|
|
if (sd.mem)
|
|
{
|
|
switch (sd.bytes)
|
|
{
|
|
case 1:
|
|
mem_put_qi (sd.u.addr, v);
|
|
break;
|
|
case 2:
|
|
mem_put_hi (sd.u.addr, v);
|
|
break;
|
|
case 3:
|
|
mem_put_psi (sd.u.addr, v);
|
|
break;
|
|
case 4:
|
|
mem_put_si (sd.u.addr, v);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (sd.bytes)
|
|
{
|
|
case 1:
|
|
v &= 0xff;
|
|
break;
|
|
case 2:
|
|
v &= 0xffff;
|
|
break;
|
|
case 3:
|
|
v &= 0xffffff;
|
|
break;
|
|
}
|
|
put_reg (sd.u.reg, v);
|
|
}
|
|
}
|
|
|
|
srcdest
|
|
decode_bit (int destcode)
|
|
{
|
|
srcdest sd;
|
|
int addr = 0;
|
|
static const char *dc_names[] = { "r0", "r1", "r2", "r3",
|
|
"a0", "a1", "[a0]", "[a1]",
|
|
"disp8[a0]", "disp8[a1]", "disp8[sb]", "disp8[fb]",
|
|
"disp16[a0]", "disp16[a1]", "disp16[sb]", "abs16"
|
|
};
|
|
|
|
if (trace)
|
|
{
|
|
const char *the_bits = bits (destcode, 4);
|
|
printf ("decode: %s : %s\n", the_bits, dc_names[destcode]);
|
|
}
|
|
|
|
switch (destcode)
|
|
{
|
|
case 0:
|
|
sd.u.reg = r0;
|
|
break;
|
|
case 1:
|
|
sd.u.reg = r1;
|
|
break;
|
|
case 2:
|
|
sd.u.reg = r2;
|
|
break;
|
|
case 3:
|
|
sd.u.reg = r3;
|
|
break;
|
|
case 4:
|
|
sd.u.reg = a0;
|
|
break;
|
|
case 5:
|
|
sd.u.reg = a1;
|
|
break;
|
|
case 6:
|
|
addr = get_reg (a0);
|
|
break;
|
|
case 7:
|
|
addr = get_reg (a1);
|
|
break;
|
|
case 8:
|
|
addr = get_reg (a0) + disp8 ();
|
|
break;
|
|
case 9:
|
|
addr = get_reg (a1) + disp8 ();
|
|
break;
|
|
case 10:
|
|
addr = get_reg (sb) * 8 + disp8 ();
|
|
break;
|
|
case 11:
|
|
addr = get_reg (fb) * 8 + sign_ext (disp8 (), 8);
|
|
break;
|
|
case 12:
|
|
addr = get_reg (a0) + disp16 ();
|
|
break;
|
|
case 13:
|
|
addr = get_reg (a1) + disp16 ();
|
|
break;
|
|
case 14:
|
|
addr = get_reg (sb) + disp16 ();
|
|
break;
|
|
case 15:
|
|
addr = disp16 ();
|
|
break;
|
|
}
|
|
|
|
if (destcode < 6)
|
|
{
|
|
int d = disp8 ();
|
|
sd.mem = 0;
|
|
sd.mask = 1 << (d & 0x0f);
|
|
}
|
|
else
|
|
{
|
|
addr &= addr_mask;
|
|
sd.mem = 1;
|
|
sd.mask = 1 << (addr & 7);
|
|
sd.u.addr = addr >> 3;
|
|
}
|
|
return sd;
|
|
}
|
|
|
|
srcdest
|
|
decode_bit11 (int op0)
|
|
{
|
|
srcdest sd;
|
|
sd.mask = 1 << (op0 & 7);
|
|
sd.mem = 1;
|
|
sd.u.addr = get_reg (sb) + disp8 ();
|
|
return sd;
|
|
}
|
|
|
|
int
|
|
get_bit (srcdest sd)
|
|
{
|
|
int b;
|
|
if (sd.mem)
|
|
b = mem_get_qi (sd.u.addr) & sd.mask;
|
|
else
|
|
b = get_reg (sd.u.reg) & sd.mask;
|
|
return b ? 1 : 0;
|
|
}
|
|
|
|
void
|
|
put_bit (srcdest sd, int val)
|
|
{
|
|
int b;
|
|
if (sd.mem)
|
|
b = mem_get_qi (sd.u.addr);
|
|
else
|
|
b = get_reg (sd.u.reg);
|
|
if (val)
|
|
b |= sd.mask;
|
|
else
|
|
b &= ~sd.mask;
|
|
if (sd.mem)
|
|
mem_put_qi (sd.u.addr, b);
|
|
else
|
|
put_reg (sd.u.reg, b);
|
|
}
|
|
|
|
int
|
|
get_bit2 (srcdest sd, int bit)
|
|
{
|
|
int b;
|
|
if (sd.mem)
|
|
b = mem_get_qi (sd.u.addr + (bit >> 3)) & (1 << (bit & 7));
|
|
else
|
|
b = get_reg (sd.u.reg) & (1 << bit);
|
|
return b ? 1 : 0;
|
|
}
|
|
|
|
void
|
|
put_bit2 (srcdest sd, int bit, int val)
|
|
{
|
|
int b;
|
|
if (sd.mem)
|
|
b = mem_get_qi (sd.u.addr + (bit >> 3));
|
|
else
|
|
b = get_reg (sd.u.reg);
|
|
if (val)
|
|
b |= (1 << (bit & 7));
|
|
else
|
|
b &= ~(1 << (bit & 7));
|
|
if (sd.mem)
|
|
mem_put_qi (sd.u.addr + (bit >> 3), b);
|
|
else
|
|
put_reg (sd.u.reg, b);
|
|
}
|