1// Copyright 2009 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28#include "v8.h"
29
30#include "constants-arm.h"
31
32
33namespace assembler {
34namespace arm {
35
36namespace v8i = v8::internal;
37
38
39// These register names are defined in a way to match the native disassembler
40// formatting. See for example the command "objdump -d <binary file>".
41const char* Registers::names_[kNumRegisters] = {
42  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
43  "r8", "r9", "r10", "fp", "ip", "sp", "lr", "pc",
44};
45
46
47// List of alias names which can be used when referring to ARM registers.
48const Registers::RegisterAlias Registers::aliases_[] = {
49  {10, "sl"},
50  {11, "r11"},
51  {12, "r12"},
52  {13, "r13"},
53  {14, "r14"},
54  {15, "r15"},
55  {kNoRegister, NULL}
56};
57
58
59const char* Registers::Name(int reg) {
60  const char* result;
61  if ((0 <= reg) && (reg < kNumRegisters)) {
62    result = names_[reg];
63  } else {
64    result = "noreg";
65  }
66  return result;
67}
68
69
70// Support for VFP registers s0 to s31 (d0 to d15).
71// Note that "sN:sM" is the same as "dN/2"
72// These register names are defined in a way to match the native disassembler
73// formatting. See for example the command "objdump -d <binary file>".
74const char* VFPRegisters::names_[kNumVFPRegisters] = {
75    "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
76    "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15",
77    "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23",
78    "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31",
79    "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
80    "d8", "d9", "d10", "d11", "d12", "d13", "d14", "d15"
81};
82
83
84const char* VFPRegisters::Name(int reg) {
85  ASSERT((0 <= reg) && (reg < kNumVFPRegisters));
86  return names_[reg];
87}
88
89
90int Registers::Number(const char* name) {
91  // Look through the canonical names.
92  for (int i = 0; i < kNumRegisters; i++) {
93    if (strcmp(names_[i], name) == 0) {
94      return i;
95    }
96  }
97
98  // Look through the alias names.
99  int i = 0;
100  while (aliases_[i].reg != kNoRegister) {
101    if (strcmp(aliases_[i].name, name) == 0) {
102      return aliases_[i].reg;
103    }
104    i++;
105  }
106
107  // No register with the reguested name found.
108  return kNoRegister;
109}
110
111
112} }  // namespace assembler::arm
113