1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #if V8_TARGET_ARCH_MIPS
6
7 #include "src/codegen/mips/constants-mips.h"
8
9 namespace v8 {
10 namespace internal {
11
12 // -----------------------------------------------------------------------------
13 // Registers.
14
15 // These register names are defined in a way to match the native disassembler
16 // formatting. See for example the command "objdump -d <binary file>".
17 const char* Registers::names_[kNumSimuRegisters] = {
18 "zero_reg", "at", "v0", "v1", "a0", "a1", "a2", "a3", "t0",
19 "t1", "t2", "t3", "t4", "t5", "t6", "t7", "s0", "s1",
20 "s2", "s3", "s4", "s5", "s6", "s7", "t8", "t9", "k0",
21 "k1", "gp", "sp", "fp", "ra", "LO", "HI", "pc"};
22
23 // List of alias names which can be used when referring to MIPS registers.
24 const Registers::RegisterAlias Registers::aliases_[] = {
25 {0, "zero"},
26 {23, "cp"},
27 {30, "s8"},
28 {30, "s8_fp"},
29 {kInvalidRegister, nullptr}};
30
Name(int reg)31 const char* Registers::Name(int reg) {
32 const char* result;
33 if ((0 <= reg) && (reg < kNumSimuRegisters)) {
34 result = names_[reg];
35 } else {
36 result = "noreg";
37 }
38 return result;
39 }
40
Number(const char * name)41 int Registers::Number(const char* name) {
42 // Look through the canonical names.
43 for (int i = 0; i < kNumSimuRegisters; i++) {
44 if (strcmp(names_[i], name) == 0) {
45 return i;
46 }
47 }
48
49 // Look through the alias names.
50 int i = 0;
51 while (aliases_[i].reg != kInvalidRegister) {
52 if (strcmp(aliases_[i].name, name) == 0) {
53 return aliases_[i].reg;
54 }
55 i++;
56 }
57
58 // No register with the reguested name found.
59 return kInvalidRegister;
60 }
61
62 const char* FPURegisters::names_[kNumFPURegisters] = {
63 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10",
64 "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", "f19", "f20", "f21",
65 "f22", "f23", "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31"};
66
67 // List of alias names which can be used when referring to MIPS registers.
68 const FPURegisters::RegisterAlias FPURegisters::aliases_[] = {
69 {kInvalidRegister, nullptr}};
70
Name(int creg)71 const char* FPURegisters::Name(int creg) {
72 const char* result;
73 if ((0 <= creg) && (creg < kNumFPURegisters)) {
74 result = names_[creg];
75 } else {
76 result = "nocreg";
77 }
78 return result;
79 }
80
Number(const char * name)81 int FPURegisters::Number(const char* name) {
82 // Look through the canonical names.
83 for (int i = 0; i < kNumFPURegisters; i++) {
84 if (strcmp(names_[i], name) == 0) {
85 return i;
86 }
87 }
88
89 // Look through the alias names.
90 int i = 0;
91 while (aliases_[i].creg != kInvalidRegister) {
92 if (strcmp(aliases_[i].name, name) == 0) {
93 return aliases_[i].creg;
94 }
95 i++;
96 }
97
98 // No Cregister with the reguested name found.
99 return kInvalidFPURegister;
100 }
101
102 const char* MSARegisters::names_[kNumMSARegisters] = {
103 "w0", "w1", "w2", "w3", "w4", "w5", "w6", "w7", "w8", "w9", "w10",
104 "w11", "w12", "w13", "w14", "w15", "w16", "w17", "w18", "w19", "w20", "w21",
105 "w22", "w23", "w24", "w25", "w26", "w27", "w28", "w29", "w30", "w31"};
106
107 const MSARegisters::RegisterAlias MSARegisters::aliases_[] = {
108 {kInvalidRegister, nullptr}};
109
Name(int creg)110 const char* MSARegisters::Name(int creg) {
111 const char* result;
112 if ((0 <= creg) && (creg < kNumMSARegisters)) {
113 result = names_[creg];
114 } else {
115 result = "nocreg";
116 }
117 return result;
118 }
119
Number(const char * name)120 int MSARegisters::Number(const char* name) {
121 // Look through the canonical names.
122 for (int i = 0; i < kNumMSARegisters; i++) {
123 if (strcmp(names_[i], name) == 0) {
124 return i;
125 }
126 }
127
128 // Look through the alias names.
129 int i = 0;
130 while (aliases_[i].creg != kInvalidRegister) {
131 if (strcmp(aliases_[i].name, name) == 0) {
132 return aliases_[i].creg;
133 }
134 i++;
135 }
136
137 // No Cregister with the reguested name found.
138 return kInvalidMSARegister;
139 }
140
141 } // namespace internal
142 } // namespace v8
143
144 #endif // V8_TARGET_ARCH_MIPS
145