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// leb_unittest.cc -- test read_signed_LEB_128 and read_unsigned_LEB_128 

// Copyright 2012 Free Software Foundation, Inc.

// Written by Cary Coutant <ccoutant@google.com>.

// This file is part of gold.

// This program is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

// MA 02110-1301, USA.

#include "gold.h"

#include <sys/types.h>

#include "int_encoding.h"

#include "test.h"

namespace gold_testsuite

{

using namespace gold;

bool

Leb128_test(Test_report*)

{

  size_t len;

  // Unsigned tests.

  static unsigned char u1[] = { 0 };             // 0

  static unsigned char u2[] = { 1 };            // 1

  static unsigned char u3[] = { 126 };          // 126

  static unsigned char u4[] = { 127 };          // 127

  static unsigned char u5[] = { 0x80+0, 1 };     // 128

  static unsigned char u6[] = { 0x80+1, 1 };    // 129

  static unsigned char u7[] = { 0x80+57, 100 }; // 12857

  static unsigned char u8[] = { 0x80, 0x80, 0x80, 0x80,

                                0x80, 0x80, 0x80, 0x80,

                                0x80, 1};       // 1ULL << 63

  // Signed tests.

  static unsigned char s1[] = { 0 };             // 0

  static unsigned char s2[] = { 1 };            // 1

  static unsigned char s3[] = { 0x7e };         // -2

  static unsigned char s4[] = { 0x80+127, 0 };   // 127

  static unsigned char s5[] = { 0x80+1, 0x7f }; // -127

  static unsigned char s6[] = { 0x80+0, 1 };     // 128

  static unsigned char s7[] = { 0x80+0, 0x7f };  // -128

  static unsigned char s8[] = { 0x80+1, 1 };    // 129

  static unsigned char s9[] = { 0xff, 0x7e };   // -129

  CHECK(read_unsigned_LEB_128(u1, &len) == 0 && len == sizeof(u1));

  CHECK(read_unsigned_LEB_128(u2, &len) == 1 && len == sizeof(u2));

  CHECK(read_unsigned_LEB_128(u3, &len) == 126 && len == sizeof(u3));

  CHECK(read_unsigned_LEB_128(u4, &len) == 127 && len == sizeof(u4));

  CHECK(read_unsigned_LEB_128(u5, &len) == 128 && len == sizeof(u5));

  CHECK(read_unsigned_LEB_128(u6, &len) == 129 && len == sizeof(u6));

  CHECK(read_unsigned_LEB_128(u7, &len) == 12857 && len == sizeof(u7));

  CHECK(read_unsigned_LEB_128(u8, &len) == (1ULL << 63) && len == sizeof(u8));

  CHECK(read_signed_LEB_128(s1, &len) == 0 && len == sizeof(s1));

  CHECK(read_signed_LEB_128(s2, &len) == 1 && len == sizeof(s2));

  CHECK(read_signed_LEB_128(s3, &len) == -2 && len == sizeof(s3));

  CHECK(read_signed_LEB_128(s4, &len) == 127 && len == sizeof(s4));

  CHECK(read_signed_LEB_128(s5, &len) == -127 && len == sizeof(s5));

  CHECK(read_signed_LEB_128(s6, &len) == 128 && len == sizeof(s6));

  CHECK(read_signed_LEB_128(s7, &len) == -128 && len == sizeof(s7));

  CHECK(read_signed_LEB_128(s8, &len) == 129 && len == sizeof(s8));

  CHECK(read_signed_LEB_128(s9, &len) == -129 && len == sizeof(s9));

  return true;

}

Register_test leb128_register("LEB128", Leb128_test);

} // End namespace gold_testsuite.