1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/* load.c --- loading object files into the M32C simulator.
Copyright (C) 2005-2013 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/>. */
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "bfd.h"
#include "cpu.h"
#include "mem.h"
int (*decode_opcode) () = 0;
int default_machine = 0;
void
m32c_set_mach (unsigned long mach)
{
switch (mach)
{
case bfd_mach_m16c:
m32c_set_cpu (CPU_M16C);
if (verbose)
fprintf (stderr, "[cpu: r8c/m16c]\n");
break;
case bfd_mach_m32c:
m32c_set_cpu (CPU_M32C);
if (verbose)
fprintf (stderr, "[cpu: m32cm/m32c]\n");
break;
default:
fprintf (stderr, "unknown m32c machine type 0x%lx\n", mach);
decode_opcode = 0;
break;
}
}
void
m32c_load (bfd * prog)
{
asection *s;
unsigned long mach = bfd_get_mach (prog);
unsigned long highest_addr_loaded = 0;
if (mach == 0 && default_machine != 0)
mach = default_machine;
m32c_set_mach (mach);
for (s = prog->sections; s; s = s->next)
{
#if 0
/* This was a good idea until we started storing the RAM data in
ROM, at which point everything was all messed up. The code
remains as a reminder. */
if ((s->flags & SEC_ALLOC) && !(s->flags & SEC_READONLY))
{
if (strcmp (bfd_get_section_name (prog, s), ".stack"))
{
int secend =
bfd_get_section_size (s) + bfd_section_lma (prog, s);
if (heaptop < secend && bfd_section_lma (prog, s) < 0x10000)
{
heaptop = heapbottom = secend;
}
}
}
#endif
if (s->flags & SEC_LOAD)
{
char *buf;
bfd_size_type size;
size = bfd_get_section_size (s);
if (size <= 0)
continue;
bfd_vma base = bfd_section_lma (prog, s);
if (verbose)
fprintf (stderr, "[load a=%08x s=%08x %s]\n",
(int) base, (int) size, bfd_get_section_name (prog, s));
buf = (char *) malloc (size);
bfd_get_section_contents (prog, s, buf, 0, size);
mem_put_blk (base, buf, size);
free (buf);
if (highest_addr_loaded < base + size - 1 && size >= 4)
highest_addr_loaded = base + size - 1;
}
}
if (strcmp (bfd_get_target (prog), "srec") == 0)
{
heaptop = heapbottom = 0;
switch (mach)
{
case bfd_mach_m16c:
if (highest_addr_loaded > 0x10000)
regs.r_pc = mem_get_si (0x000ffffc) & membus_mask;
else
regs.r_pc = mem_get_si (0x000fffc) & membus_mask;
break;
case bfd_mach_m32c:
regs.r_pc = mem_get_si (0x00fffffc) & membus_mask;
break;
}
}
else
regs.r_pc = prog->start_address;
if (verbose)
fprintf (stderr, "[start pc=%08x]\n", (unsigned int) regs.r_pc);
}
|
