[PATCH] Add infrastructure for new-style core support to SPARC

[Mark Kettenis]

Index: ChangeLog
from  Mark Kettenis  <kettenis@gnu.org>

	* sparc-tdep.h (struct regset): Provide opaque declaration.
	(struct gdbarch_tdep): Add gregset, sizeof_gregset,
	fpregset and sizeof_fpregset members.
	* sparc-tdep.c (struct regset): Provide opaque declaration.
	(sparc_regset_from_core_section): New function.
	(sparc32_gdbarch_init): Initialize TDEP->gregset,
	TDEP->sizeof_gregset, TDEP->fpregset and TDEP->sizeof_fpregset.
	Set regset_from_core_section when appropriate.

Index: sparc-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/sparc-tdep.c,v
retrieving revision 1.137
diff -u -p -r1.137 sparc-tdep.c
--- sparc-tdep.c 5 Jan 2004 20:38:57 -0000 1.137
+++ sparc-tdep.c 10 Jan 2004 23:42:27 -0000
@@ -41,6 +41,8 @@
 
 #include "sparc-tdep.h"
 
+struct regset;
+
 /* This file implements the The SPARC 32-bit ABI as defined by the
    section "Low-Level System Information" of the SPARC Compliance
    Definition (SCD) 2.4.1, which is the 32-bit System V psABI for
@@ -1004,6 +1006,25 @@ sparc_stabs_unglobalize_name (char *name
 }
 
 
+/* Return the appropriate register set for the core section identified
+   by SECT_NAME and SECT_SIZE.  */
+
+const struct regset *
+sparc_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)
+    return tdep->gregset;
+
+  if (strcmp (sect_name, ".reg2") == 0 && sect_size == tdep->sizeof_fpregset)
+    return tdep->fpregset;
+
+  return NULL;
+}
+
+
 static struct gdbarch *
 sparc32_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 {
@@ -1021,6 +1042,10 @@ sparc32_gdbarch_init (struct gdbarch_inf
 
   tdep->pc_regnum = SPARC32_PC_REGNUM;
   tdep->npc_regnum = SPARC32_NPC_REGNUM;
+  tdep->gregset = NULL;
+  tdep->sizeof_gregset = 20 * 4;
+  tdep->fpregset = NULL;
+  tdep->sizeof_fpregset = 33 * 4;
   tdep->plt_entry_size = 0;
 
   set_gdbarch_long_double_bit (gdbarch, 128);
@@ -1073,6 +1098,11 @@ sparc32_gdbarch_init (struct gdbarch_inf
   gdbarch_init_osabi (info, gdbarch);
 
   frame_unwind_append_sniffer (gdbarch, sparc32_frame_sniffer);
+
+  /* If we have register sets, enable the generic core file support.  */
+  if (tdep->gregset && tdep->fpregset)
+    set_gdbarch_regset_from_core_section (gdbarch,
+					  sparc_regset_from_core_section);
 
   return gdbarch;
 }
Index: sparc-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/sparc-tdep.h,v
retrieving revision 1.4
diff -u -p -r1.4 sparc-tdep.h
--- sparc-tdep.h 3 Jan 2004 10:08:44 -0000 1.4
+++ sparc-tdep.h 10 Jan 2004 23:42:27 -0000
@@ -24,6 +24,7 @@
 
 struct gdbarch;
 struct regcache;
+struct regset;
 struct trad_frame_saved_reg;
 
 /* Register offsets for the general-purpose register set.  */
@@ -50,6 +51,12 @@ struct gdbarch_tdep
      definitions.  */
   int pc_regnum;
   int npc_regnum;
+
+  /* Register sets.  */
+  struct regset *gregset;
+  size_t sizeof_gregset;
+  struct regset *fpregset;
+  size_t sizeof_fpregset;
 
   /* Offset of saved PC in jmp_buf.  */
   int jb_pc_offset;