158 lines
3.8 KiB
C
158 lines
3.8 KiB
C
/* load.c --- loading object files into the RL78 simulator.
|
|
|
|
Copyright (C) 2005-2015 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "libiberty.h"
|
|
#include "bfd.h"
|
|
#include "libbfd.h"
|
|
#include "cpu.h"
|
|
#include "mem.h"
|
|
#include "load.h"
|
|
#include "elf/internal.h"
|
|
#include "elf/common.h"
|
|
|
|
/* Helper function for invoking a GDB-specified printf. */
|
|
static void
|
|
xprintf (host_callback *callback, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start (ap, fmt);
|
|
|
|
(*callback->vprintf_filtered) (callback, fmt, ap);
|
|
|
|
va_end (ap);
|
|
}
|
|
|
|
/* Given a file offset, look up the section name. */
|
|
static const char *
|
|
find_section_name_by_offset (bfd *abfd, file_ptr filepos)
|
|
{
|
|
asection *s;
|
|
|
|
for (s = abfd->sections; s; s = s->next)
|
|
if (s->filepos == filepos)
|
|
return bfd_get_section_name (abfd, s);
|
|
|
|
return "(unknown)";
|
|
}
|
|
|
|
void
|
|
rl78_load (bfd *prog, host_callback *callbacks, const char * const simname)
|
|
{
|
|
Elf_Internal_Phdr * phdrs;
|
|
long sizeof_phdrs;
|
|
int num_headers;
|
|
int i;
|
|
int max_rom = 0;
|
|
|
|
init_cpu ();
|
|
|
|
/* Note we load by ELF program header not by BFD sections.
|
|
This is because BFD sections get their information from
|
|
the ELF section structure, which only includes a VMA value
|
|
and not an LMA value. */
|
|
sizeof_phdrs = bfd_get_elf_phdr_upper_bound (prog);
|
|
if (sizeof_phdrs == 0)
|
|
{
|
|
fprintf (stderr, "%s: Failed to get size of program headers\n", simname);
|
|
return;
|
|
}
|
|
phdrs = xmalloc (sizeof_phdrs);
|
|
|
|
num_headers = bfd_get_elf_phdrs (prog, phdrs);
|
|
if (num_headers < 1)
|
|
{
|
|
fprintf (stderr, "%s: Failed to read program headers\n", simname);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < num_headers; i++)
|
|
{
|
|
Elf_Internal_Phdr * p = phdrs + i;
|
|
char *buf;
|
|
bfd_vma size;
|
|
bfd_vma base;
|
|
file_ptr offset;
|
|
|
|
size = p->p_filesz;
|
|
if (size <= 0)
|
|
continue;
|
|
|
|
base = p->p_paddr;
|
|
if (verbose > 1)
|
|
fprintf (stderr, "[load segment: lma=%08x vma=%08x size=%08x]\n",
|
|
(int) base, (int) p->p_vaddr, (int) size);
|
|
if (callbacks)
|
|
xprintf (callbacks,
|
|
"Loading section %s, size %#lx lma %08lx vma %08lx\n",
|
|
find_section_name_by_offset (prog, p->p_offset),
|
|
size, base, p->p_vaddr);
|
|
|
|
buf = xmalloc (size);
|
|
|
|
offset = p->p_offset;
|
|
if (prog->iovec->bseek (prog, offset, SEEK_SET) != 0)
|
|
{
|
|
fprintf (stderr, "%s, Failed to seek to offset %lx\n", simname, (long) offset);
|
|
continue;
|
|
}
|
|
|
|
if (prog->iovec->bread (prog, buf, size) != size)
|
|
{
|
|
fprintf (stderr, "%s: Failed to read %lx bytes\n", simname, size);
|
|
continue;
|
|
}
|
|
|
|
if (base > 0xeffff || base + size > 0xeffff)
|
|
{
|
|
fprintf (stderr, "%s, Can't load image to RAM/SFR space: 0x%lx - 0x%lx\n",
|
|
simname, base, base+size);
|
|
continue;
|
|
}
|
|
if (max_rom < base + size)
|
|
max_rom = base + size;
|
|
|
|
mem_put_blk (base, buf, size);
|
|
free (buf);
|
|
}
|
|
|
|
free (phdrs);
|
|
|
|
mem_rom_size (max_rom);
|
|
|
|
pc = prog->start_address;
|
|
|
|
if (strcmp (bfd_get_target (prog), "srec") == 0
|
|
|| pc == 0)
|
|
{
|
|
pc = mem_get_hi (0);
|
|
}
|
|
|
|
if (verbose > 1)
|
|
fprintf (stderr, "[start pc=%08x]\n", (unsigned int) pc);
|
|
}
|