1//===-- PPCPredicates.h - PPC Branch Predicate Information ------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file describes the PowerPC branch predicates.
11//
12//===----------------------------------------------------------------------===//
13
14/* Capstone Disassembly Engine */
15/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2014 */
16
17#ifndef CS_POWERPC_PPCPREDICATES_H
18#define CS_POWERPC_PPCPREDICATES_H
19
20#include "../../include/ppc.h"
21
22// NOTE: duplicate of ppc_bc in ppc.h to maitain code compatibility with LLVM
23typedef enum ppc_predicate {
24  PPC_PRED_LT       = (0 << 5) | 12,
25  PPC_PRED_LE       = (1 << 5) |  4,
26  PPC_PRED_EQ       = (2 << 5) | 12,
27  PPC_PRED_GE       = (0 << 5) |  4,
28  PPC_PRED_GT       = (1 << 5) | 12,
29  PPC_PRED_NE       = (2 << 5) |  4,
30  PPC_PRED_UN       = (3 << 5) | 12,
31  PPC_PRED_NU       = (3 << 5) |  4,
32  PPC_PRED_LT_MINUS = (0 << 5) | 14,
33  PPC_PRED_LE_MINUS = (1 << 5) |  6,
34  PPC_PRED_EQ_MINUS = (2 << 5) | 14,
35  PPC_PRED_GE_MINUS = (0 << 5) |  6,
36  PPC_PRED_GT_MINUS = (1 << 5) | 14,
37  PPC_PRED_NE_MINUS = (2 << 5) |  6,
38  PPC_PRED_UN_MINUS = (3 << 5) | 14,
39  PPC_PRED_NU_MINUS = (3 << 5) |  6,
40  PPC_PRED_LT_PLUS  = (0 << 5) | 15,
41  PPC_PRED_LE_PLUS  = (1 << 5) |  7,
42  PPC_PRED_EQ_PLUS  = (2 << 5) | 15,
43  PPC_PRED_GE_PLUS  = (0 << 5) |  7,
44  PPC_PRED_GT_PLUS  = (1 << 5) | 15,
45  PPC_PRED_NE_PLUS  = (2 << 5) |  7,
46  PPC_PRED_UN_PLUS  = (3 << 5) | 15,
47  PPC_PRED_NU_PLUS  = (3 << 5) |  7,
48
49  // When dealing with individual condition-register bits, we have simple set
50  // and unset predicates.
51  PPC_PRED_BIT_SET =   1024,
52  PPC_PRED_BIT_UNSET = 1025
53} ppc_predicate;
54
55/// Invert the specified predicate.  != -> ==, < -> >=.
56ppc_predicate InvertPredicate(ppc_predicate Opcode);
57
58/// Assume the condition register is set by MI(a,b), return the predicate if
59/// we modify the instructions such that condition register is set by MI(b,a).
60ppc_predicate getSwappedPredicate(ppc_predicate Opcode);
61
62#endif
63