// Copyright 2009 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
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//       with the distribution.
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//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "v8.h"

#include "constants-arm.h"


namespace assembler {
namespace arm {

namespace v8i = v8::internal;


// These register names are defined in a way to match the native disassembler
// formatting. See for example the command "objdump -d <binary file>".
const char* Registers::names_[kNumRegisters] = {
  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
  "r8", "r9", "r10", "fp", "ip", "sp", "lr", "pc",
};


// List of alias names which can be used when referring to ARM registers.
const Registers::RegisterAlias Registers::aliases_[] = {
  {10, "sl"},
  {11, "r11"},
  {12, "r12"},
  {13, "r13"},
  {14, "r14"},
  {15, "r15"},
  {kNoRegister, NULL}
};


const char* Registers::Name(int reg) {
  const char* result;
  if ((0 <= reg) && (reg < kNumRegisters)) {
    result = names_[reg];
  } else {
    result = "noreg";
  }
  return result;
}


int Registers::Number(const char* name) {
  // Look through the canonical names.
  for (int i = 0; i < kNumRegisters; i++) {
    if (strcmp(names_[i], name) == 0) {
      return i;
    }
  }

  // Look through the alias names.
  int i = 0;
  while (aliases_[i].reg != kNoRegister) {
    if (strcmp(aliases_[i].name, name) == 0) {
      return aliases_[i].reg;
    }
    i++;
  }

  // No register with the reguested name found.
  return kNoRegister;
}


} }  // namespace assembler::arm