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[PATCH]: Use HC11/HC12 reset vector for starting simulator
- From: Stephane Carrez <stcarrez at nerim dot fr>
- To: gdb-patches at sources dot redhat dot com
- Date: Tue, 13 Aug 2002 12:56:36 +0200
- Subject: [PATCH]: Use HC11/HC12 reset vector for starting simulator
Hi!
I've committed this small improvement of HC11/HC12 simulator from Marko
to use the reset vector entry point to obtain the startup code of the program.
Stephane
2002-08-13 Marko Kohtala <marko.kohtala@luukku.com>
* interp.c (sim_prepare_for_program): Look up the image for the
reset vector and set cpu_use_elf_start to 1 if not found.
(sim_open): Do not set cpu_use_elf_start.
Index: interp.c
===================================================================
RCS file: /cvs/src/src/sim/m68hc11/interp.c,v
retrieving revision 1.12
diff -u -p -r1.12 interp.c
--- interp.c 13 Aug 2002 08:47:18 -0000 1.12
+++ interp.c 13 Aug 2002 08:51:06 -0000
@@ -306,7 +306,31 @@ sim_prepare_for_program (SIM_DESC sd, st
if (abfd != NULL)
{
+ asection *s;
cpu->cpu_elf_start = bfd_get_start_address (abfd);
+ /* See if any section sets the reset address */
+ cpu->cpu_use_elf_start = 1;
+ for (s = abfd->sections; s && cpu->cpu_use_elf_start; s = s->next)
+ {
+ if (s->flags & SEC_LOAD)
+ {
+ bfd_size_type size;
+
+ size = bfd_get_section_size_before_reloc (s);
+ if (size > 0)
+ {
+ bfd_vma lma;
+
+ if (STATE_LOAD_AT_LMA_P (sd))
+ lma = bfd_section_lma (abfd, s);
+ else
+ lma = bfd_section_vma (abfd, s);
+
+ if (lma <= 0xFFFE && lma+size >= 0x10000)
+ cpu->cpu_use_elf_start = 0;
+ }
+ }
+ }
}
/* reset all state information */
@@ -333,7 +357,6 @@ sim_open (SIM_OPEN_KIND kind, host_callb
cpu_initialize (sd, cpu);
- cpu->cpu_use_elf_start = 1;
if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
{
free_state (sd);