1 files changed, 105 insertions, 0 deletions
diff --git a/sim/ppc/idecode_fields.h b/sim/ppc/idecode_fields.h
new file mode 100644
index 0000000..1c449bc
--- /dev/null
+++ b/sim/ppc/idecode_fields.h
@@ -0,0 +1,105 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+ 
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ 
+    */
+
+
+/* Instruction field macros:
+
+   The macro's below greatly simplify the process of translating the
+   pseudo code found in the PowerPC manual into C.
+
+   In addition to the below, more will be found in the gen program's
+   cache table */
+
+
+/* map some statements and variables directly across */
+
+#define is_64bit_implementation (WITH_TARGET_WORD_BITSIZE == 64)
+#define is_64bit_mode           IS_64BIT_MODE(processor)
+
+#define NIA nia
+#define CIA cia
+
+
+/* reservation */
+
+#define RESERVE        cpu_reservation(processor)->valid
+#define RESERVE_ADDR   cpu_reservation(processor)->addr
+#define RESERVE_DATA   cpu_reservation(processor)->data
+
+#define real_addr(EA, IS_READ)  vm_real_data_addr(cpu_data_map(processor), \
+						  EA, \
+						  IS_READ, \
+						  processor, \
+						  cia)
+
+
+/* depending on mode return a 32 or 64bit number */
+
+#define IEA(X)       (is_64bit_mode \
+		      ? (X) \
+		      : MASKED((X), 32, 63))
+
+/* Expand argument to current architecture size */
+
+#define EXTS(X)		EXTS_##X
+
+
+/* Gen translates text of the form A{XX:YY} into A_XX_YY_ the macro's
+   below define such translated text into real expressions */
+
+/* the spr field as it normally is used */
+
+#define SPR_5_9_ (SPR & 0x1f)
+#define SPR_0_4_ (SPR >> 5)
+#define SPR_0_ ((SPR & BIT10(0)) != 0)
+
+#define tbr_5_9_ (tbr & 0x1f)
+#define tbr_0_4_ (tbr >> 5)
+
+
+#define TB cpu_get_time_base(processor)
+
+
+/* various registers with important masks */
+
+#define LR_0b00		(LR & ~3)
+#define CTR_0b00	(CTR & ~3)
+
+#define CR_BI_  ((CR & BIT32_BI) != 0)
+#define CR_BA_	((CR & BIT32_BA) != 0)
+#define CR_BB_	((CR & BIT32_BB) != 0)
+
+
+/* extended extracted fields */
+
+#define TO_0_ ((TO & BIT5(0)) != 0)
+#define TO_1_ ((TO & BIT5(1)) != 0)
+#define TO_2_ ((TO & BIT5(2)) != 0)
+#define TO_3_ ((TO & BIT5(3)) != 0)
+#define TO_4_ ((TO & BIT5(4)) != 0)
+
+#define BO_0_ ((BO & BIT5(0)) != 0)
+#define BO_1_ ((BO & BIT5(1)) != 0)
+#define BO_2_ ((BO & BIT5(2)) != 0)
+#define BO_3_ ((BO & BIT5(3)) != 0)
+#define BO_4_ ((BO & BIT5(4)) != 0)
+
+#define GOTO(dest)   goto XCONCAT4(label__,dest,__,MY_PREFIX)
+#define LABEL(dest)  XCONCAT4(label__,dest,__,MY_PREFIX)