[PATCH] Core file regset support for i386

[Mark Kettenis <kettenis at chello dot nl>]

This adds an implementation of the regset_from_core_section method for
the i386.

Checked in,

Mark


Index: ChangeLog
from  Mark Kettenis  <kettenis@gnu.org>
 
	* i386-tdep.c (i386_regset_from_core_section): New function.
	(i386_gdbarch_init): Initialize regset_from_core_section if
	appropriate.
	* i386-tdep.h (i386_regset_from_core_section): New declaration.

 
Index: i386-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i386-tdep.c,v
retrieving revision 1.171
diff -u -p -r1.171 i386-tdep.c
--- i386-tdep.c 6 Oct 2003 21:58:20 -0000 1.171
+++ i386-tdep.c 11 Oct 2003 13:41:01 -0000
@@ -1587,6 +1587,40 @@ i386_supply_fpregset (const struct regse
   gdb_assert (len == tdep->sizeof_fpregset);
   i387_supply_fsave (regcache, regnum, fpregs);
 }
+
+/* Return the appropriate register set for the core section identified
+   by SECT_NAME and SECT_SIZE.  */
+
+const struct regset *
+i386_regset_from_core_section (struct gdbarch *gdbarch,
+			       const char *sect_name, size_t sect_size)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  if (strcmp (sect_name, ".reg") == 0 && sect_size == tdep->sizeof_gregset)
+    {
+      if (tdep->gregset == NULL)
+	{
+	  tdep->gregset = XMALLOC (struct regset);
+	  tdep->gregset->descr = tdep;
+	  tdep->gregset->supply_regset = i386_supply_gregset;
+	}
+      return tdep->gregset;
+    }
+
+  if (strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset)
+    {
+      if (tdep->fpregset == NULL)
+	{
+	  tdep->fpregset = XMALLOC (struct regset);
+	  tdep->fpregset->descr = tdep;
+	  tdep->fpregset->supply_regset = i386_supply_fpregset;
+	}
+      return tdep->fpregset;
+    }
+
+  return NULL;
+}
 
 
 #ifdef STATIC_TRANSFORM_NAME
@@ -1976,6 +2010,13 @@ i386_gdbarch_init (struct gdbarch_info i
 
   frame_unwind_append_sniffer (gdbarch, i386_sigtramp_frame_sniffer);
   frame_unwind_append_sniffer (gdbarch, i386_frame_sniffer);
+
+  /* If we have a register mapping, enable the generic core file
+     support, unless it has already been enabled.  */
+  if (tdep->gregset_reg_offset
+      && !gdbarch_regset_from_core_section_p (gdbarch))
+    set_gdbarch_regset_from_core_section (gdbarch,
+					  i386_regset_from_core_section);
 
   /* Unless support for MMX has been disabled, make %mm0 the first
      pseudo-register.  */
Index: i386-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/i386-tdep.h,v
retrieving revision 1.28
diff -u -p -r1.28 i386-tdep.h
--- i386-tdep.h 11 Oct 2003 13:33:31 -0000 1.28
+++ i386-tdep.h 11 Oct 2003 13:41:01 -0000
@@ -189,6 +189,12 @@ extern char const *i386_register_name (i
 extern int i386_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
 				     struct reggroup *group);
 
+/* Return the appropriate register set for the core section identified
+   by SECT_NAME and SECT_SIZE.  */
+extern const struct regset *
+  i386_regset_from_core_section (struct gdbarch *gdbarch,
+				 const char *sect_name, size_t sect_size);
+
 /* Initialize a basic ELF architecture variant.  */
 extern void i386_elf_init_abi (struct gdbarch_info, struct gdbarch *);