* defs.h: Incorporate param.h. All users changed.
* param-no-tm.h: Change users to define TM_FILE_OVERRIDE instead.
* param.h, param-no-tm.h: Removed.
* Update copyrights in all changed files.
* dbxread.c, dwarfread.c, inflow.c, infrun.c, m2-exp.y, putenv.c,
solib.c, symtab.h, tm-umax.h, valprint.c: Lint.
* tm-convex.h, tm-hp300hpux.h, tm-merlin.h, tm-sparc.h,
xm-merlin.h: Avoid host include files in target descriptions.
* getpagesize.h: Removed, libiberty copes now.
1991-11-21 19:42:05 +01:00
|
|
|
|
/* Print National Semiconductor 32000 instructions for GDB, the GNU debugger.
|
|
|
|
|
Copyright 1986, 1988, 1991 Free Software Foundation, Inc.
|
1991-03-28 17:28:29 +01:00
|
|
|
|
|
1991-06-04 10:16:28 +02:00
|
|
|
|
This file is part of GDB.
|
|
|
|
|
|
|
|
|
|
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 2 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, write to the Free Software
|
|
|
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
1991-03-28 17:28:29 +01:00
|
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
|
#include "symtab.h"
|
|
|
|
|
#include "ns32k-opcode.h"
|
|
|
|
|
#include "gdbcore.h"
|
|
|
|
|
|
|
|
|
|
/* 32000 instructions are never longer than this. */
|
|
|
|
|
#define MAXLEN 62
|
|
|
|
|
|
|
|
|
|
/* Number of elements in the opcode table. */
|
|
|
|
|
#define NOPCODES (sizeof notstrs / sizeof notstrs[0])
|
|
|
|
|
|
|
|
|
|
extern char *reg_names[];
|
|
|
|
|
|
|
|
|
|
#define NEXT_IS_ADDR '|'
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* extract "count" bits starting "offset" bits
|
|
|
|
|
* into buffer
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
bit_extract (buffer, offset, count)
|
|
|
|
|
char *buffer;
|
|
|
|
|
int offset;
|
|
|
|
|
int count;
|
|
|
|
|
{
|
|
|
|
|
int result;
|
|
|
|
|
int mask;
|
|
|
|
|
int bit;
|
|
|
|
|
|
|
|
|
|
buffer += offset >> 3;
|
|
|
|
|
offset &= 7;
|
|
|
|
|
bit = 1;
|
|
|
|
|
result = 0;
|
|
|
|
|
while (count--)
|
|
|
|
|
{
|
|
|
|
|
if ((*buffer & (1 << offset)))
|
|
|
|
|
result |= bit;
|
|
|
|
|
if (++offset == 8)
|
|
|
|
|
{
|
|
|
|
|
offset = 0;
|
|
|
|
|
buffer++;
|
|
|
|
|
}
|
|
|
|
|
bit <<= 1;
|
|
|
|
|
}
|
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
float
|
|
|
|
|
fbit_extract (buffer, offset, count)
|
|
|
|
|
{
|
|
|
|
|
union {
|
|
|
|
|
int ival;
|
|
|
|
|
float fval;
|
|
|
|
|
} foo;
|
|
|
|
|
|
|
|
|
|
foo.ival = bit_extract (buffer, offset, 32);
|
|
|
|
|
return foo.fval;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
double
|
|
|
|
|
dbit_extract (buffer, offset, count)
|
|
|
|
|
{
|
|
|
|
|
union {
|
|
|
|
|
struct {int low, high; } ival;
|
|
|
|
|
double dval;
|
|
|
|
|
} foo;
|
|
|
|
|
|
|
|
|
|
foo.ival.low = bit_extract (buffer, offset, 32);
|
|
|
|
|
foo.ival.high = bit_extract (buffer, offset+32, 32);
|
|
|
|
|
return foo.dval;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
sign_extend (value, bits)
|
|
|
|
|
{
|
|
|
|
|
value = value & ((1 << bits) - 1);
|
|
|
|
|
return (value & (1 << (bits-1))
|
|
|
|
|
? value | (~((1 << bits) - 1))
|
|
|
|
|
: value);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
flip_bytes (ptr, count)
|
|
|
|
|
char *ptr;
|
|
|
|
|
int count;
|
|
|
|
|
{
|
|
|
|
|
char tmp;
|
|
|
|
|
|
|
|
|
|
while (count > 0)
|
|
|
|
|
{
|
|
|
|
|
tmp = *ptr;
|
|
|
|
|
ptr[0] = ptr[count-1];
|
|
|
|
|
ptr[count-1] = tmp;
|
|
|
|
|
ptr++;
|
|
|
|
|
count -= 2;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Given a character C, does it represent a general addressing mode? */
|
|
|
|
|
#define Is_gen(c) \
|
|
|
|
|
((c) == 'F' || (c) == 'L' || (c) == 'B' \
|
|
|
|
|
|| (c) == 'W' || (c) == 'D' || (c) == 'A')
|
|
|
|
|
|
|
|
|
|
/* Adressing modes. */
|
|
|
|
|
#define Adrmod_index_byte 0x1c
|
|
|
|
|
#define Adrmod_index_word 0x1d
|
|
|
|
|
#define Adrmod_index_doubleword 0x1e
|
|
|
|
|
#define Adrmod_index_quadword 0x1f
|
|
|
|
|
|
|
|
|
|
/* Is MODE an indexed addressing mode? */
|
|
|
|
|
#define Adrmod_is_index(mode) \
|
|
|
|
|
(mode == Adrmod_index_byte \
|
|
|
|
|
|| mode == Adrmod_index_word \
|
|
|
|
|
|| mode == Adrmod_index_doubleword \
|
|
|
|
|
|| mode == Adrmod_index_quadword)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Print the 32000 instruction at address MEMADDR in debugged memory,
|
|
|
|
|
on STREAM. Returns length of the instruction, in bytes. */
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
print_insn (memaddr, stream)
|
|
|
|
|
CORE_ADDR memaddr;
|
|
|
|
|
FILE *stream;
|
|
|
|
|
{
|
|
|
|
|
unsigned char buffer[MAXLEN];
|
|
|
|
|
register int i;
|
|
|
|
|
register unsigned char *p;
|
|
|
|
|
register char *d;
|
|
|
|
|
unsigned short first_word;
|
|
|
|
|
int gen, disp;
|
|
|
|
|
int ioffset; /* bits into instruction */
|
|
|
|
|
int aoffset; /* bits into arguments */
|
|
|
|
|
char arg_bufs[MAX_ARGS+1][ARG_LEN];
|
|
|
|
|
int argnum;
|
|
|
|
|
int maxarg;
|
|
|
|
|
|
|
|
|
|
read_memory (memaddr, buffer, MAXLEN);
|
|
|
|
|
|
|
|
|
|
first_word = *(unsigned short *) buffer;
|
|
|
|
|
for (i = 0; i < NOPCODES; i++)
|
|
|
|
|
if ((first_word & ((1 << notstrs[i].detail.obits) - 1))
|
|
|
|
|
== notstrs[i].detail.code)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/* Handle undefined instructions. */
|
|
|
|
|
if (i == NOPCODES)
|
|
|
|
|
{
|
|
|
|
|
fprintf (stream, "0%o", buffer[0]);
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fprintf (stream, "%s", notstrs[i].name);
|
|
|
|
|
|
|
|
|
|
ioffset = notstrs[i].detail.ibits;
|
|
|
|
|
aoffset = notstrs[i].detail.ibits;
|
|
|
|
|
d = notstrs[i].detail.args;
|
|
|
|
|
|
|
|
|
|
if (*d)
|
|
|
|
|
{
|
|
|
|
|
/* Offset in bits of the first thing beyond each index byte.
|
|
|
|
|
Element 0 is for operand A and element 1 is for operand B.
|
|
|
|
|
The rest are irrelevant, but we put them here so we don't
|
|
|
|
|
index outside the array. */
|
|
|
|
|
int index_offset[MAX_ARGS];
|
|
|
|
|
|
|
|
|
|
/* 0 for operand A, 1 for operand B, greater for other args. */
|
|
|
|
|
int whicharg = 0;
|
|
|
|
|
|
|
|
|
|
fputc ('\t', stream);
|
|
|
|
|
|
|
|
|
|
maxarg = 0;
|
|
|
|
|
|
|
|
|
|
/* First we have to find and keep track of the index bytes,
|
|
|
|
|
if we are using scaled indexed addressing mode, since the index
|
|
|
|
|
bytes occur right after the basic instruction, not as part
|
|
|
|
|
of the addressing extension. */
|
|
|
|
|
if (Is_gen(d[1]))
|
|
|
|
|
{
|
|
|
|
|
int addr_mode = bit_extract (buffer, ioffset - 5, 5);
|
|
|
|
|
|
|
|
|
|
if (Adrmod_is_index (addr_mode))
|
|
|
|
|
{
|
|
|
|
|
aoffset += 8;
|
|
|
|
|
index_offset[0] = aoffset;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (d[2] && Is_gen(d[3]))
|
|
|
|
|
{
|
|
|
|
|
int addr_mode = bit_extract (buffer, ioffset - 10, 5);
|
|
|
|
|
|
|
|
|
|
if (Adrmod_is_index (addr_mode))
|
|
|
|
|
{
|
|
|
|
|
aoffset += 8;
|
|
|
|
|
index_offset[1] = aoffset;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while (*d)
|
|
|
|
|
{
|
|
|
|
|
argnum = *d - '1';
|
|
|
|
|
d++;
|
|
|
|
|
if (argnum > maxarg && argnum < MAX_ARGS)
|
|
|
|
|
maxarg = argnum;
|
|
|
|
|
ioffset = print_insn_arg (*d, ioffset, &aoffset, buffer,
|
|
|
|
|
memaddr, arg_bufs[argnum],
|
|
|
|
|
index_offset[whicharg]);
|
|
|
|
|
d++;
|
|
|
|
|
whicharg++;
|
|
|
|
|
}
|
|
|
|
|
for (argnum = 0; argnum <= maxarg; argnum++)
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR addr;
|
|
|
|
|
char *ch, *index ();
|
|
|
|
|
for (ch = arg_bufs[argnum]; *ch;)
|
|
|
|
|
{
|
|
|
|
|
if (*ch == NEXT_IS_ADDR)
|
|
|
|
|
{
|
|
|
|
|
++ch;
|
|
|
|
|
addr = atoi (ch);
|
|
|
|
|
print_address (addr, stream);
|
|
|
|
|
while (*ch && *ch != NEXT_IS_ADDR)
|
|
|
|
|
++ch;
|
|
|
|
|
if (*ch)
|
|
|
|
|
++ch;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
putc (*ch++, stream);
|
|
|
|
|
}
|
|
|
|
|
if (argnum < maxarg)
|
|
|
|
|
fprintf (stream, ", ");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return aoffset / 8;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Print an instruction operand of category given by d. IOFFSET is
|
|
|
|
|
the bit position below which small (<1 byte) parts of the operand can
|
|
|
|
|
be found (usually in the basic instruction, but for indexed
|
|
|
|
|
addressing it can be in the index byte). AOFFSETP is a pointer to the
|
|
|
|
|
bit position of the addressing extension. BUFFER contains the
|
|
|
|
|
instruction. ADDR is where BUFFER was read from. Put the disassembled
|
|
|
|
|
version of the operand in RESULT. INDEX_OFFSET is the bit position
|
|
|
|
|
of the index byte (it contains garbage if this operand is not a
|
|
|
|
|
general operand using scaled indexed addressing mode). */
|
|
|
|
|
|
|
|
|
|
print_insn_arg (d, ioffset, aoffsetp, buffer, addr, result, index_offset)
|
|
|
|
|
char d;
|
|
|
|
|
int ioffset, *aoffsetp;
|
|
|
|
|
char *buffer;
|
|
|
|
|
CORE_ADDR addr;
|
|
|
|
|
char *result;
|
|
|
|
|
int index_offset;
|
|
|
|
|
{
|
|
|
|
|
int addr_mode;
|
|
|
|
|
float Fvalue;
|
|
|
|
|
double Lvalue;
|
|
|
|
|
int Ivalue;
|
|
|
|
|
int disp1, disp2;
|
|
|
|
|
int index;
|
|
|
|
|
|
|
|
|
|
switch (d)
|
|
|
|
|
{
|
|
|
|
|
case 'F':
|
|
|
|
|
case 'L':
|
|
|
|
|
case 'B':
|
|
|
|
|
case 'W':
|
|
|
|
|
case 'D':
|
|
|
|
|
case 'A':
|
|
|
|
|
addr_mode = bit_extract (buffer, ioffset-5, 5);
|
|
|
|
|
ioffset -= 5;
|
|
|
|
|
switch (addr_mode)
|
|
|
|
|
{
|
|
|
|
|
case 0x0: case 0x1: case 0x2: case 0x3:
|
|
|
|
|
case 0x4: case 0x5: case 0x6: case 0x7:
|
|
|
|
|
switch (d)
|
|
|
|
|
{
|
|
|
|
|
case 'F':
|
|
|
|
|
case 'L':
|
|
|
|
|
sprintf (result, "f%d", addr_mode);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
sprintf (result, "r%d", addr_mode);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case 0x8: case 0x9: case 0xa: case 0xb:
|
|
|
|
|
case 0xc: case 0xd: case 0xe: case 0xf:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "%d(r%d)", disp1, addr_mode & 7);
|
|
|
|
|
break;
|
|
|
|
|
case 0x10:
|
|
|
|
|
case 0x11:
|
|
|
|
|
case 0x12:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
disp2 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "%d(%d(%s))", disp2, disp1,
|
|
|
|
|
addr_mode==0x10?"fp":addr_mode==0x11?"sp":"sb");
|
|
|
|
|
break;
|
|
|
|
|
case 0x13:
|
|
|
|
|
sprintf (result, "reserved");
|
|
|
|
|
break;
|
|
|
|
|
case 0x14:
|
|
|
|
|
switch (d)
|
|
|
|
|
{
|
|
|
|
|
case 'B':
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 8);
|
|
|
|
|
Ivalue = sign_extend (Ivalue, 8);
|
|
|
|
|
*aoffsetp += 8;
|
|
|
|
|
sprintf (result, "$%d", Ivalue);
|
|
|
|
|
break;
|
|
|
|
|
case 'W':
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 16);
|
|
|
|
|
flip_bytes (&Ivalue, 2);
|
|
|
|
|
*aoffsetp += 16;
|
|
|
|
|
Ivalue = sign_extend (Ivalue, 16);
|
|
|
|
|
sprintf (result, "$%d", Ivalue);
|
|
|
|
|
break;
|
|
|
|
|
case 'D':
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 32);
|
|
|
|
|
flip_bytes (&Ivalue, 4);
|
|
|
|
|
*aoffsetp += 32;
|
|
|
|
|
sprintf (result, "$%d", Ivalue);
|
|
|
|
|
break;
|
|
|
|
|
case 'A':
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 32);
|
|
|
|
|
flip_bytes (&Ivalue, 4);
|
|
|
|
|
*aoffsetp += 32;
|
|
|
|
|
sprintf (result, "$|%d|", Ivalue);
|
|
|
|
|
break;
|
|
|
|
|
case 'F':
|
|
|
|
|
Fvalue = fbit_extract (buffer, *aoffsetp, 32);
|
|
|
|
|
flip_bytes (&Fvalue, 4);
|
|
|
|
|
*aoffsetp += 32;
|
|
|
|
|
sprintf (result, "$%g", Fvalue);
|
|
|
|
|
break;
|
|
|
|
|
case 'L':
|
|
|
|
|
Lvalue = dbit_extract (buffer, *aoffsetp, 64);
|
|
|
|
|
flip_bytes (&Lvalue, 8);
|
|
|
|
|
*aoffsetp += 64;
|
|
|
|
|
sprintf (result, "$%g", Lvalue);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case 0x15:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "@|%d|", disp1);
|
|
|
|
|
break;
|
|
|
|
|
case 0x16:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
disp2 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "EXT(%d) + %d", disp1, disp2);
|
|
|
|
|
break;
|
|
|
|
|
case 0x17:
|
|
|
|
|
sprintf (result, "tos");
|
|
|
|
|
break;
|
|
|
|
|
case 0x18:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "%d(fp)", disp1);
|
|
|
|
|
break;
|
|
|
|
|
case 0x19:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "%d(sp)", disp1);
|
|
|
|
|
break;
|
|
|
|
|
case 0x1a:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "%d(sb)", disp1);
|
|
|
|
|
break;
|
|
|
|
|
case 0x1b:
|
|
|
|
|
disp1 = get_displacement (buffer, aoffsetp);
|
|
|
|
|
sprintf (result, "|%d|", addr + disp1);
|
|
|
|
|
break;
|
|
|
|
|
case 0x1c:
|
|
|
|
|
case 0x1d:
|
|
|
|
|
case 0x1e:
|
|
|
|
|
case 0x1f:
|
|
|
|
|
index = bit_extract (buffer, index_offset - 8, 3);
|
|
|
|
|
print_insn_arg (d, index_offset, aoffsetp, buffer, addr,
|
|
|
|
|
result, 0);
|
|
|
|
|
{
|
|
|
|
|
static char *ind[] = {"b", "w", "d", "q"};
|
|
|
|
|
char *off;
|
|
|
|
|
|
|
|
|
|
off = result + strlen (result);
|
|
|
|
|
sprintf (off, "[r%d:%s]", index,
|
|
|
|
|
ind[addr_mode & 3]);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case 'q':
|
|
|
|
|
Ivalue = bit_extract (buffer, ioffset-4, 4);
|
|
|
|
|
Ivalue = sign_extend (Ivalue, 4);
|
|
|
|
|
sprintf (result, "%d", Ivalue);
|
|
|
|
|
ioffset -= 4;
|
|
|
|
|
break;
|
|
|
|
|
case 'r':
|
|
|
|
|
Ivalue = bit_extract (buffer, ioffset-3, 3);
|
|
|
|
|
sprintf (result, "r%d", Ivalue&7);
|
|
|
|
|
ioffset -= 3;
|
|
|
|
|
break;
|
|
|
|
|
case 'd':
|
|
|
|
|
sprintf (result, "%d", get_displacement (buffer, aoffsetp));
|
|
|
|
|
break;
|
|
|
|
|
case 'p':
|
|
|
|
|
sprintf (result, "%c%d%c", NEXT_IS_ADDR,
|
|
|
|
|
addr + get_displacement (buffer, aoffsetp),
|
|
|
|
|
NEXT_IS_ADDR);
|
|
|
|
|
break;
|
|
|
|
|
case 'i':
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 8);
|
|
|
|
|
*aoffsetp += 8;
|
|
|
|
|
sprintf (result, "0x%x", Ivalue);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
return ioffset;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
get_displacement (buffer, aoffsetp)
|
|
|
|
|
char *buffer;
|
|
|
|
|
int *aoffsetp;
|
|
|
|
|
{
|
|
|
|
|
int Ivalue;
|
|
|
|
|
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 8);
|
|
|
|
|
switch (Ivalue & 0xc0)
|
|
|
|
|
{
|
|
|
|
|
case 0x00:
|
|
|
|
|
case 0x40:
|
|
|
|
|
Ivalue = sign_extend (Ivalue, 7);
|
|
|
|
|
*aoffsetp += 8;
|
|
|
|
|
break;
|
|
|
|
|
case 0x80:
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 16);
|
|
|
|
|
flip_bytes (&Ivalue, 2);
|
|
|
|
|
Ivalue = sign_extend (Ivalue, 14);
|
|
|
|
|
*aoffsetp += 16;
|
|
|
|
|
break;
|
|
|
|
|
case 0xc0:
|
|
|
|
|
Ivalue = bit_extract (buffer, *aoffsetp, 32);
|
|
|
|
|
flip_bytes (&Ivalue, 4);
|
|
|
|
|
Ivalue = sign_extend (Ivalue, 30);
|
|
|
|
|
*aoffsetp += 32;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
return Ivalue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return the number of locals in the current frame given a pc
|
|
|
|
|
pointing to the enter instruction. This is used in the macro
|
|
|
|
|
FRAME_FIND_SAVED_REGS. */
|
|
|
|
|
|
|
|
|
|
ns32k_localcount (enter_pc)
|
|
|
|
|
CORE_ADDR enter_pc;
|
|
|
|
|
{
|
|
|
|
|
unsigned char localtype;
|
|
|
|
|
int localcount;
|
|
|
|
|
|
|
|
|
|
localtype = read_memory_integer (enter_pc+2, 1);
|
|
|
|
|
if ((localtype & 0x80) == 0)
|
|
|
|
|
localcount = localtype;
|
|
|
|
|
else if ((localtype & 0xc0) == 0x80)
|
|
|
|
|
localcount = (((localtype & 0x3f) << 8)
|
|
|
|
|
| (read_memory_integer (enter_pc+3, 1) & 0xff));
|
|
|
|
|
else
|
|
|
|
|
localcount = (((localtype & 0x3f) << 24)
|
|
|
|
|
| ((read_memory_integer (enter_pc+3, 1) & 0xff) << 16)
|
|
|
|
|
| ((read_memory_integer (enter_pc+4, 1) & 0xff) << 8 )
|
|
|
|
|
| (read_memory_integer (enter_pc+5, 1) & 0xff));
|
|
|
|
|
return localcount;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Get the address of the enter opcode for the function
|
|
|
|
|
* containing PC, if there is an enter for the function,
|
|
|
|
|
* and if the pc is between the enter and exit.
|
|
|
|
|
* Returns positive address if pc is between enter/exit,
|
|
|
|
|
* 1 if pc before enter or after exit, 0 otherwise.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
|
ns32k_get_enter_addr (pc)
|
|
|
|
|
CORE_ADDR pc;
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR enter_addr;
|
|
|
|
|
unsigned char op;
|
|
|
|
|
|
|
|
|
|
if (ABOUT_TO_RETURN (pc))
|
|
|
|
|
return 1; /* after exit */
|
|
|
|
|
|
|
|
|
|
enter_addr = get_pc_function_start (pc);
|
|
|
|
|
|
|
|
|
|
if (pc == enter_addr)
|
|
|
|
|
return 1; /* before enter */
|
|
|
|
|
|
|
|
|
|
op = read_memory_integer (enter_addr, 1);
|
|
|
|
|
|
|
|
|
|
if (op != 0x82)
|
|
|
|
|
return 0; /* function has no enter/exit */
|
|
|
|
|
|
|
|
|
|
return enter_addr; /* pc is between enter and exit */
|
|
|
|
|
}
|