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Add INDEX_OPCODE()

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This commit is contained in:
christos 2009-02-17 13:48:29 +00:00
parent c315121ad0
commit 78c0289565
1 changed files with 16 additions and 1 deletions
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17
sys/arch/vax/vax/db_disasm.h
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@ -1,4 +1,4 @@
/* $NetBSD: db_disasm.h,v 1.6 2009/02/16 23:55:31 christos Exp $ */
/* $NetBSD: db_disasm.h,v 1.7 2009/02/17 13:48:29 christos Exp $ */
/*
* Copyright (c) 1996 Ludd, University of Lule}, Sweden.
* All rights reserved.
@ -61,3 +61,18 @@ extern vax_instr_t vax_inst[256];
extern vax_instr_t vax_inst2[0x56];
long skip_opcode(long);
/*
* reasonably simple macro to gather all the reserved two-byte opcodes
* into only a few table entries...
*/
#define INDEX_OPCODE(x) \
(((x) & 0xff00) == 0xfe00) ? 0 : \
((x) < 0xfd30) ? 0 : \
((x) < 0xfd80) ? (x) - 0xfd30 : \
((x) == 0xfd98) ? 0x50 : \
((x) == 0xfd99) ? 0x51 : \
((x) == 0xfdf6) ? 0x52 : \
((x) == 0xfdf7) ? 0x53 : \
((x) == 0xfffd) ? 0x54 : \
((x) == 0xfffe) ? 0x55 : 0