*** empty log message ***

[deliverable/binutils-gdb.git] / sim / common / sim-bits.h

diff --git a/sim/common/sim-bits.h b/sim/common/sim-bits.h
index 3170c61c4dc31a30fba36d74941f55806b60da1e..caebf0a902b6c699dc77079d918fad8723478a8c 100644 (file)
--- a/sim/common/sim-bits.h
+++ b/sim/common/sim-bits.h
@@ -24,7 +24,7 @@
 #define _SIM_BITS_H_
 
 
-/* bit manipulation routines:
+/* Bit manipulation routines:
 
    Bit numbering: The bits are numbered according to the target ISA's
    convention.  That being controlled by WITH_TARGET_WORD_MSB.  For
@@ -42,15 +42,17 @@
    NB: Use EXTRACTED, MSEXTRACTED and LSEXTRACTED as a guideline for
    naming.  LSMASK and LSMASKED are wrong.
 
-   BIT*(POS): Constant with just 1 bit set.
+   BIT*(POS): `*' bit constant with just 1 bit set.
 
-   LSBIT*(OFFSET): Constant with just 1 bit set - LS bit is zero.
+   LSBIT*(OFFSET): `*' bit constant with just 1 bit set - LS bit is
+   zero.
 
-   MSBIT*(OFFSET): Constant with just 1 bit set - MS bit is zero.
+   MSBIT*(OFFSET): `*' bit constant with just 1 bit set - MS bit is
+   zero.
 
-   MASK*(FIRST, LAST): Constant with bits [FIRST .. LAST] set. The
-   <MACRO> (no size) version permits FIRST >= LAST and generates a
-   wrapped bit mask vis ([0..LAST] | [FIRST..LSB]).
+   MASK*(FIRST, LAST): `*' bit constant with bits [FIRST .. LAST]
+   set. The <MACRO> (no size) version permits FIRST >= LAST and
+   generates a wrapped bit mask vis ([0..LAST] | [FIRST..LSB]).
 
    LSMASK*(FIRST, LAST): Like MASK - LS bit is zero.
 
@@ -87,18 +89,26 @@
    IEA_MASKED(SHOULD_MASK, ADDR): Convert the address to the targets
    natural size.  If in 32bit mode, discard the high 32bits.
 
-   EXTENDED*(VALUE): Convert the `*' bit value to the targets natural
-   word size.  Sign extned the value if needed.
+   EXTEND*(VALUE): Convert the `*' bit value to the targets natural
+   word size.  Sign extend the value if needed.
+
+   ALIGN_*(VALUE): Round the value upwards so that it is aligned to a
+   `_*' byte boundary.
 
-   ALIGN_*(VALUE): Round upwards the value so that it is aligned.
+   FLOOR_*(VALUE): Truncate the value so that it is aligned to a `_*'
+   byte boundary.
 
-   FLOOR_*(VALUE): Truncate the value so that it is aligned.
+   ROT*(VALUE, NR_BITS): Return the `*' bit VALUE rotated by NR_BITS
+   right (positive) or left (negative).
 
-   ROTL*(VALUE, NR_BITS): Return the value rotated by NR_BITS left.
+   ROTL*(VALUE, NR_BITS): Return the `*' bit value rotated by NR_BITS
+   left.  0 <= NR_BITS <= `*'.
 
-   ROTR*(VALUE, NR_BITS): Return the value rotated by NR_BITS right.
+   ROTR*(VALUE, NR_BITS): Return the `*' bit value rotated by NR_BITS
+   right.  0 <= NR_BITS <= N.
 
-   SEXT*(VAL, SIGN_BIT): Treat SIGN_BIT as the sign, extend it.
+   SEXT*(VALUE, SIGN_BIT): Treat SIGN_BIT as VALUEs sign, extend it ti
+   `*' bits.
 
    Note: Only the BIT* and MASK* macros return a constant that can be
    used in variable declarations.
@@ -156,20 +166,32 @@
 #define _MSB_32(START, STOP) (START <= STOP \
                              ? (START < 32 ? 0 : START - 32) \
                              : (STOP < 32 ? 0 : STOP - 32))
+#define _MSB_16(START, STOP) (START <= STOP \
+                             ? (START < 48 ? 0 : START - 48) \
+                             : (STOP < 48 ? 0 : STOP - 48))
 #else
 #define _MSB_32(START, STOP) (START >= STOP \
                              ? (START >= 32 ? 31 : START) \
                              : (STOP >= 32 ? 31 : STOP))
+#define _MSB_16(START, STOP) (START >= STOP \
+                             ? (START >= 16 ? 15 : START) \
+                             : (STOP >= 16 ? 15 : STOP))
 #endif
 
 #if (WITH_TARGET_WORD_MSB == 0)
 #define _LSB_32(START, STOP) (START <= STOP \
                              ? (STOP < 32 ? 0 : STOP - 32) \
                              : (START < 32 ? 0 : START - 32))
+#define _LSB_16(START, STOP) (START <= STOP \
+                             ? (STOP < 48 ? 0 : STOP - 48) \
+                             : (START < 48 ? 0 : START - 48))
 #else
 #define _LSB_32(START, STOP) (START >= STOP \
                              ? (STOP >= 32 ? 31 : STOP) \
                              : (START >= 32 ? 31 : START))
+#define _LSB_16(START, STOP) (START >= STOP \
+                             ? (STOP >= 16 ? 15 : STOP) \
+                             : (START >= 16 ? 15 : START))
 #endif
 
 #if (WITH_TARGET_WORD_MSB == 0)
@@ -194,11 +216,17 @@
 
 #if (WITH_TARGET_WORD_BITSIZE == 64)
 #define LSBIT(POS) LSBIT64 (POS)
-#else
+#endif
+#if (WITH_TARGET_WORD_BITSIZE == 32)
 #define LSBIT(POS) ((unsigned32)((POS) >= 32 \
                                 ? 0 \
                                 : (1 << ((POS) >= 32 ? 0 : (POS)))))
 #endif
+#if (WITH_TARGET_WORD_BITSIZE == 16)
+#define LSBIT(POS) ((unsigned16)((POS) >= 16 \
+                                ? 0 \
+                                : (1 << ((POS) >= 16 ? 0 : (POS)))))
+#endif
 
 
 #define MSBIT8(POS)  ((unsigned8) 1 << ( 8 - 1 - (POS)))
@@ -208,11 +236,17 @@
 
 #if (WITH_TARGET_WORD_BITSIZE == 64)
 #define MSBIT(POS) MSBIT64 (POS)
-#else
+#endif
+#if (WITH_TARGET_WORD_BITSIZE == 32)
 #define MSBIT(POS) ((unsigned32)((POS) < 32 \
                                 ? 0 \
                                 : (1 << ((POS) < 32 ? 0 : (64 - 1) - (POS)))))
 #endif
+#if (WITH_TARGET_WORD_BITSIZE == 16)
+#define MSBIT(POS) ((unsigned16)((POS) < 48 \
+                                ? 0 \
+                                : (1 << ((POS) < 48 ? 0 : (64 - 1) - (POS)))))
+#endif
 
 
 /* Bit operations */
@@ -277,6 +311,23 @@
                      _MSB_POS (32, 0), \
                      _MSB_32 ((START), (STOP))))))
 #endif
+#if (WITH_TARGET_WORD_BITSIZE == 16)
+#define MASK(START, STOP) \
+     (_POS_LE ((START), (STOP)) \
+      ? (_POS_LE ((STOP), _MSB_POS (64, 15)) \
+        ? 0 \
+        : _MASKn (16, \
+                  _MSB_16 ((START), (STOP)), \
+                  _LSB_16 ((START), (STOP)))) \
+      : (_MASKn (16, \
+                _LSB_16 ((START), (STOP)), \
+                _LSB_POS (16, 0)) \
+        | (_POS_LE ((STOP), _MSB_POS (64, 15)) \
+           ? 0 \
+           : _MASKn (16, \
+                     _MSB_POS (16, 0), \
+                     _MSB_16 ((START), (STOP))))))
+#endif
 #if !defined (MASK)
 #error "MASK never undefined"
 #endif
@@ -448,8 +499,13 @@ INLINE_SIM_BITS(unsigned_word) MSINSERTED (unsigned_word val, int start, int sto
 
 /* Sign extend the quantity to the targets natural word size */
 
+#define EXTEND4(X)  (LSSEXT ((X), 3))
+#define EXTEND5(X)  (LSSEXT ((X), 4))
 #define EXTEND8(X)  ((signed_word)(signed8)(X))
+#define EXTEND11(X)  (LSSEXT ((X), 10))
+#define EXTEND15(X)  (LSSEXT ((X), 14))
 #define EXTEND16(X) ((signed_word)(signed16)(X))
+#define EXTEND24(X)  (LSSEXT ((X), 23))
 #define EXTEND32(X) ((signed_word)(signed32)(X))
 #define EXTEND64(X) ((signed_word)(signed64)(X))
 
@@ -460,6 +516,9 @@ INLINE_SIM_BITS(unsigned_word) MSINSERTED (unsigned_word val, int start, int sto
 #if (WITH_TARGET_WORD_BITSIZE == 32)
 #define EXTENDED(X)     (X)
 #endif
+#if (WITH_TARGET_WORD_BITSIZE == 16)
+#define EXTENDED(X)     (X)
+#endif
 
 
 /* memory alignment macro's */
@@ -542,7 +601,7 @@ INLINE_SIM_BITS(unsigned_word) MSSEXT (signed_word val, int sign_bit);
 
 
 
-#if ((SIM_BITS_INLINE & INCLUDE_MODULE) && (SIM_BITS_INLINE & INCLUDED_BY_MODULE))
+#if H_REVEALS_MODULE_P (SIM_BITS_INLINE)
 #include "sim-bits.c"
 #endif