130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/* load.c --- loading object files into the M32C simulator.
|
|
|
|
Copyright (C) 2005, 2007, 2008, 2009 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 <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);
|
|
}
|