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/* Test program for leb128
Copyright (C) 2020 Tom Tromey
This file is part of elfutils.
This file 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.
elfutils 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, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
#include <libdw.h>
#include "../libdw/libdwP.h"
#include "../libdw/memory-access.h"
#define OK 0
#define FAIL 1
static const unsigned char v0[] = { 0x0 };
static const unsigned char v1[] = { 0x1 };
static const unsigned char v23[] = { 23 };
static const unsigned char vm_1[] = { 0x7f };
static const unsigned char vm_2[] = { 0x7e };
static const unsigned char s127[] = { 0xff, 0x00 };
static const unsigned char v128[] = { 0x80, 0x01 };
static const unsigned char v129[] = { 0x81, 0x01 };
static const unsigned char vm_127[] = { 0x81, 0x7f };
static const unsigned char vm_128[] = { 0x80, 0x7f };
static const unsigned char vm_129[] = { 0xff, 0x7e };
static const unsigned char vhuge[] =
{
0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x0
};
static const unsigned char most_positive[] =
{
0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x3f
};
static const unsigned char most_negative[] =
{
0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x40
};
static const unsigned char minus_one[] =
{
0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x7f
};
static const unsigned char int64_max_m1[] =
{
0xfe, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x00
};
static const unsigned char int64_min_p1[] =
{
0x81, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x80, 0x7f
};
static int
test_one_sleb (const unsigned char *data, size_t len, int64_t expect)
{
int64_t value;
const unsigned char *p;
p = data;
get_sleb128 (value, p, p + len);
if (value != expect || p != data + len)
return FAIL;
p = data;
get_sleb128_unchecked (value, p);
if (value != expect || p != data + len)
return FAIL;
return OK;
}
static int
test_sleb (void)
{
#define TEST(ARRAY, V) \
if (test_one_sleb (ARRAY, sizeof (ARRAY), V) != OK) \
return FAIL;
TEST (v0, 0);
TEST (v1, 1);
TEST (v23, 23);
TEST (vm_1, -1);
TEST (vm_2, -2);
TEST (s127, 127);
TEST (v128, 128);
TEST (v129, 129);
TEST (vm_127, -127);
TEST (vm_128, -128);
TEST (vm_129, -129);
TEST (vhuge, 9223372036854775807ll);
TEST (most_positive, 4611686018427387903ll);
TEST (most_negative, -4611686018427387904ll);
TEST (minus_one, -1);
TEST (int64_max_m1, INT64_MAX - 1);
TEST (int64_min_p1, INT64_MIN + 1);
#undef TEST
return OK;
}
static int
test_sleb_safety (void)
{
const int64_t expected_error = INT64_MAX;
int64_t value;
const unsigned char *test = NULL;
get_sleb128 (value, test, test);
if (value != expected_error)
return FAIL;
return OK;
}
static int
test_one_uleb (const unsigned char *data, size_t len, uint64_t expect)
{
uint64_t value;
const unsigned char *p;
p = data;
get_uleb128 (value, p, p + len);
if (value != expect || p != data + len)
return FAIL;
p = data;
get_uleb128_unchecked (value, p);
if (value != expect || p != data + len)
return FAIL;
return OK;
}
static int
test_uleb (void)
{
#define TEST(ARRAY, V) \
if (test_one_uleb (ARRAY, sizeof (ARRAY), V) != OK) \
return FAIL;
TEST (v0, 0);
TEST (v1, 1);
TEST (v23, 23);
TEST (vm_1, 127);
TEST (vm_2, 126);
TEST (s127, 127);
TEST (v128, 128);
TEST (v129, 129);
TEST (vm_127, 16257);
TEST (vm_128, 16256);
TEST (vm_129, 16255);
TEST (vhuge, 9223372036854775807ull);
TEST (most_positive, 4611686018427387903ull);
TEST (most_negative, 4611686018427387904ull);
TEST (minus_one, 9223372036854775807ull);
TEST (int64_max_m1, INT64_MAX - 1);
TEST (int64_min_p1, INT64_MIN + 1);
#undef TEST
return OK;
}
static int
test_uleb_safety (void)
{
const uint64_t expected_error = UINT64_MAX;
uint64_t value;
const unsigned char *test = NULL;
get_uleb128 (value, test, test);
if (value != expected_error)
return FAIL;
return OK;
}
int
main (void)
{
return test_sleb () || test_sleb_safety () || test_uleb ()
|| test_uleb_safety ();
}
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