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/* load.c --- loading object files into the M32C simulator.
Copyright (C) 2005-2022 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "bfd.h"
#include "cpu.h"
#include "mem.h"
#include "load.h"
int (*decode_opcode) (void) = 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_section_name (s), ".stack"))
{
int secend =
bfd_section_size (s) + bfd_section_lma (s);
if (heaptop < secend && bfd_section_lma (s) < 0x10000)
{
heaptop = heapbottom = secend;
}
}
}
#endif
if (s->flags & SEC_LOAD)
{
char *buf;
bfd_size_type size;
bfd_vma base;
size = bfd_section_size (s);
if (size <= 0)
continue;
base = bfd_section_lma (s);
if (verbose)
fprintf (stderr, "[load a=%08" PRIx64 " s=%08x %s]\n",
(uint64_t) base, (int) size, bfd_section_name (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);
}
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