130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
/* load.c --- loading object files into the M32C simulator.
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Copyright (C) 2005, 2007-2012 Free Software Foundation, Inc.
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Contributed by Red Hat, Inc.
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This file is part of the GNU simulators.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "bfd.h"
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#include "cpu.h"
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#include "mem.h"
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int (*decode_opcode) () = 0;
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int default_machine = 0;
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void
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m32c_set_mach (unsigned long mach)
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{
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switch (mach)
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{
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case bfd_mach_m16c:
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m32c_set_cpu (CPU_M16C);
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if (verbose)
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fprintf (stderr, "[cpu: r8c/m16c]\n");
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break;
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case bfd_mach_m32c:
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m32c_set_cpu (CPU_M32C);
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if (verbose)
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fprintf (stderr, "[cpu: m32cm/m32c]\n");
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break;
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default:
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fprintf (stderr, "unknown m32c machine type 0x%lx\n", mach);
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decode_opcode = 0;
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break;
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}
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}
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void
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m32c_load (bfd * prog)
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{
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asection *s;
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unsigned long mach = bfd_get_mach (prog);
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unsigned long highest_addr_loaded = 0;
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if (mach == 0 && default_machine != 0)
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mach = default_machine;
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m32c_set_mach (mach);
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for (s = prog->sections; s; s = s->next)
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{
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#if 0
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/* This was a good idea until we started storing the RAM data in
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ROM, at which point everything was all messed up. The code
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remains as a reminder. */
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if ((s->flags & SEC_ALLOC) && !(s->flags & SEC_READONLY))
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{
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if (strcmp (bfd_get_section_name (prog, s), ".stack"))
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{
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int secend =
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bfd_get_section_size (s) + bfd_section_lma (prog, s);
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if (heaptop < secend && bfd_section_lma (prog, s) < 0x10000)
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{
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heaptop = heapbottom = secend;
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}
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}
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}
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#endif
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if (s->flags & SEC_LOAD)
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{
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char *buf;
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bfd_size_type size;
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size = bfd_get_section_size (s);
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if (size <= 0)
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continue;
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bfd_vma base = bfd_section_lma (prog, s);
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if (verbose)
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fprintf (stderr, "[load a=%08x s=%08x %s]\n",
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(int) base, (int) size, bfd_get_section_name (prog, s));
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buf = (char *) malloc (size);
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bfd_get_section_contents (prog, s, buf, 0, size);
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mem_put_blk (base, buf, size);
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free (buf);
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if (highest_addr_loaded < base + size - 1 && size >= 4)
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highest_addr_loaded = base + size - 1;
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}
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}
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if (strcmp (bfd_get_target (prog), "srec") == 0)
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{
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heaptop = heapbottom = 0;
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switch (mach)
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{
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case bfd_mach_m16c:
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if (highest_addr_loaded > 0x10000)
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regs.r_pc = mem_get_si (0x000ffffc) & membus_mask;
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else
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regs.r_pc = mem_get_si (0x000fffc) & membus_mask;
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break;
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case bfd_mach_m32c:
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regs.r_pc = mem_get_si (0x00fffffc) & membus_mask;
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break;
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}
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}
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else
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regs.r_pc = prog->start_address;
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if (verbose)
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fprintf (stderr, "[start pc=%08x]\n", (unsigned int) regs.r_pc);
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}
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