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Updated the sim engine's ecode logic and commit the code changes
[thirdparty/binutils-gdb.git] / sim / cr16 / endian.c
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1/* Simulation code for the CR16 processor.
2 Copyright (C) 2008 Free Software Foundation, Inc.
3 Contributed by M Ranga Swami Reddy <MR.Swami.Reddy@nsc.com>
4
5 This file is part of GDB, the GNU debugger.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License along
18 with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20
21/* If we're being compiled as a .c file, rather than being included in
22 cr16_sim.h, then ENDIAN_INLINE won't be defined yet. */
23
24#ifndef ENDIAN_INLINE
25#define NO_ENDIAN_INLINE
26#include "cr16_sim.h"
27#define ENDIAN_INLINE
28#endif
29
30ENDIAN_INLINE uint16
31get_word (x)
32 uint8 *x;
33{
34 return *(uint16 *)x;
35}
36
37ENDIAN_INLINE uint32
38get_longword (x)
39 uint8 *x;
40{
41 return (((uint32) *(uint16 *)x) << 16) | ((uint32) *(uint16 *)(x+2));
42}
43
44ENDIAN_INLINE int64
45get_longlong (x)
46 uint8 *x;
47{
48 uint32 top = get_longword (x);
49 uint32 bottom = get_longword (x+4);
50 return (((int64)top)<<32) | (int64)bottom;
51}
52
53ENDIAN_INLINE void
54write_word (addr, data)
55 uint8 *addr;
56 uint16 data;
57{
58 addr[1] = (data >> 8) & 0xff;
59 addr[0] = data & 0xff;
60
61}
62
63ENDIAN_INLINE void
64write_longword (addr, data)
65 uint8 *addr;
66 uint32 data;
67{
68 *(uint16 *)(addr + 2) = (uint16)(data >> 16);
69 *(uint16 *)(addr) = (uint16)data;
70}
71
72ENDIAN_INLINE void
73write_longlong (addr, data)
74 uint8 *addr;
75 int64 data;
76{
77 write_longword (addr+4, (uint32)(data >> 32));
78 write_longword (addr, (uint32)data);
79}