Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame^] | 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 | |
| 33 | namespace assembler { |
| 34 | namespace arm { |
| 35 | |
| 36 | namespace 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>". |
| 41 | const 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. |
| 48 | const 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 | |
| 59 | const 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 | int Registers::Number(const char* name) { |
| 71 | // Look through the canonical names. |
| 72 | for (int i = 0; i < kNumRegisters; i++) { |
| 73 | if (strcmp(names_[i], name) == 0) { |
| 74 | return i; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | // Look through the alias names. |
| 79 | int i = 0; |
| 80 | while (aliases_[i].reg != kNoRegister) { |
| 81 | if (strcmp(aliases_[i].name, name) == 0) { |
| 82 | return aliases_[i].reg; |
| 83 | } |
| 84 | i++; |
| 85 | } |
| 86 | |
| 87 | // No register with the reguested name found. |
| 88 | return kNoRegister; |
| 89 | } |
| 90 | |
| 91 | |
| 92 | } } // namespace assembler::arm |