From 26216b98222fd93bf11128859575552d180d0576 Mon Sep 17 00:00:00 2001
From: Andrew Cagney <cagney@redhat.com>
Date: Wed, 12 Jun 2002 21:19:43 +0000
Subject: Add the file include/gdb/sim-arm.h defining an enum that specifies
 the register numbering used by the GDB<->SIM interface.

---
 gdb/ChangeLog   |  9 +++++++++
 gdb/Makefile.in |  3 ++-
 gdb/arm-tdep.c  | 27 +++++++++++++++++++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)

(limited to 'gdb')

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index af937aa..19dd935 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,12 @@
+2002-06-12  Andrew Cagney  <ac131313@redhat.com>
+
+	* Makefile.in (sim_arm_h): Define.
+	(arm-tdep.o): Add $(sim_arm_h) and $(gdb_assert_h).
+	* arm-tdep.c: Include "gdb/sim-arm.h" and "gdb_assert.h".
+	(arm_register_sim_regno): New function, map an internal REGNUM
+	onto a simulator register number.
+	(arm_gdbarch_init): Set register_sim_regno.
+
 2002-06-09  Aldy Hernandez  <aldyh@redhat.com>
 
 	* MAINTAINERS: Add self.
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 1d5492a..a95117e 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -573,6 +573,7 @@ dis_asm_h =	$(INCLUDE_DIR)/dis-asm.h
 remote_sim_h =	$(INCLUDE_DIR)/gdb/remote-sim.h
 demangle_h =    $(INCLUDE_DIR)/demangle.h
 obstack_h =     $(INCLUDE_DIR)/obstack.h
+sim_arm_h =	$(INCLUDE_DIR)/gdb/sim-arm.h
 sim_d10v_h =	$(INCLUDE_DIR)/gdb/sim-d10v.h
 splay_tree_h =  $(INCLUDE_DIR)/splay-tree.h
 
@@ -1307,7 +1308,7 @@ arm-tdep.o: arm-tdep.c $(defs_h) $(frame_h) $(inferior_h) $(gdbcmd_h) \
 	$(gdbcore_h) $(gdb_string_h) $(dis_asm_h) $(regcache_h) $(doublest_h) \
 	$(value_h) $(arch_utils_h) $(solib_svr4_h) $(arm_tdep_h) \
 	$(BFD_SRC)/elf-bfd.h $(INCLUDE_DIR)/coff/internal.h \
-	$(INCLUDE_DIR)/elf/arm.h 
+	$(INCLUDE_DIR)/elf/arm.h $(sim_arm_h) $(gdb_assert_h)
 
 armnbsd-nat.o: armnbsd-nat.c $(defs_h) $(arm_tdep_h) $(inferior_h) \
 	$(regcache_h) $(gdbcore_h)
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index 1ce0a5b..f4b84fa 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -36,11 +36,14 @@
 #include "solib-svr4.h"
 
 #include "arm-tdep.h"
+#include "gdb/sim-arm.h"
 
 #include "elf-bfd.h"
 #include "coff/internal.h"
 #include "elf/arm.h"
 
+#include "gdb_assert.h"
+
 /* Each OS has a different mechanism for accessing the various
    registers stored in the sigcontext structure.
 
@@ -1636,6 +1639,27 @@ arm_register_virtual_size (int regnum)
     return STATUS_REGISTER_SIZE;
 }
 
+/* Map GDB internal REGNUM onto the Arm simulator register numbers.  */
+static int
+arm_register_sim_regno (int regnum)
+{
+  int reg = regnum;
+  gdb_assert (reg >= 0 && reg < NUM_REGS);
+
+  if (reg < NUM_GREGS)
+    return SIM_ARM_R0_REGNUM + reg;
+  reg -= NUM_GREGS;
+
+  if (reg < NUM_FREGS)
+    return SIM_ARM_FP0_REGNUM + reg;
+  reg -= NUM_FREGS;
+
+  if (reg < NUM_SREGS)
+    return SIM_ARM_FPS_REGNUM + reg;
+  reg -= NUM_SREGS;
+
+  internal_error (__FILE__, __LINE__, "Bad REGNUM %d", regnum);
+}
 
 /* NOTE: cagney/2001-08-20: Both convert_from_extended() and
    convert_to_extended() use floatformat_arm_ext_littlebyte_bigword.
@@ -2870,6 +2894,9 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_max_register_virtual_size (gdbarch, FP_REGISTER_VIRTUAL_SIZE);
   set_gdbarch_register_virtual_type (gdbarch, arm_register_type);
 
+  /* Internal <-> external register number maps.  */
+  set_gdbarch_register_sim_regno (gdbarch, arm_register_sim_regno);
+
   /* Integer registers are 4 bytes.  */
   set_gdbarch_register_size (gdbarch, 4);
   set_gdbarch_register_name (gdbarch, arm_register_name);
-- 
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