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* arc-dis.c (BITS): Don't use shifts to mask off bits. 

(FIELDD): Sign extend with xor,sub.
This commit is contained in:
Alan Modra 2012-02-27 06:31:57 +00:00
parent 0d8abe3096
commit cdb062354e
2 changed files with 10 additions and 6 deletions
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5
opcodes/ChangeLog
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@ -1,3 +1,8 @@
2012-02-27 Alan Modra <amodra@gmail.com>
* arc-dis.c (BITS): Don't use shifts to mask off bits.
(FIELDD): Sign extend with xor,sub.
2012-02-25 Walter Lee <walt@tilera.com>
* tilegx-opc.c: Handle TILEGX_OPC_LD4S_TLS and TILEGX_OPC_LD_TLS.

11
opcodes/arc-dis.c
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@ -1,6 +1,6 @@
/* Instruction printing code for the ARC.
Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2005, 2007, 2009, 2010
Free Software Foundation, Inc.
Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2005, 2007, 2009,
2010, 2012 Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.com).
This file is part of libopcodes.
@ -60,15 +60,14 @@ typedef enum
} a4_decoding_class;
#define BIT(word,n) ((word) & (1 << n))
#define BITS(word,s,e) (((word) << (31 - e)) >> (s + (31 - e)))
#define BITS(word,s,e) (((word) >> s) & ((1 << (e + 1 - s)) - 1))
#define OPCODE(word) (BITS ((word), 27, 31))
#define FIELDA(word) (BITS ((word), 21, 26))
#define FIELDB(word) (BITS ((word), 15, 20))
#define FIELDC(word) (BITS ((word), 9, 14))
/* FIELD D is signed in all of its uses, so we make sure argument is
treated as signed for bit shifting purposes: */
#define FIELDD(word) (BITS (((signed int)word), 0, 8))
/* FIELD D is signed. */
#define FIELDD(word) ((BITS ((word), 0, 8) ^ 0x100) - 0x100)
#define PUT_NEXT_WORD_IN(a) \
do \