Home | History | Annotate | Download | only in arm
      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 // 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>".
     74 const 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 
     84 const char* VFPRegisters::Name(int reg) {
     85   ASSERT((0 <= reg) && (reg < kNumVFPRegisters));
     86   return names_[reg];
     87 }
     88 
     89 
     90 int 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