gecko/build/unix/elfhack/test.c

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifdef DEF
DEF(This)
DEF(is)
DEF(a)
DEF(test)
DEF(of)
DEF(string)
DEF(array)
DEF(for)
DEF(use)
DEF(with)
DEF(elfhack)
DEF(to)
DEF(see)
DEF(whether)
DEF(it)
DEF(breaks)
DEF(anything)
DEF(but)
DEF(one)
DEF(needs)
DEF(quite)
DEF(some)
DEF(strings)
DEF(before)
DEF(the)
DEF(program)
DEF(can)
DEF(do)
DEF(its)
DEF(work)
DEF(efficiently)
DEF(Without)
DEF(enough)
DEF(data)
DEF(relocation)
DEF(sections)
DEF(are)
DEF(not)
DEF(sufficiently)
DEF(large)
DEF(and)
DEF(injected)
DEF(code)
DEF(wouldnt)
DEF(fit)
DEF(Said)
DEF(otherwise)
DEF(we)
DEF(need)
DEF(more)
DEF(words)
DEF(than)
DEF(up)
DEF(here)
DEF(so)
DEF(that)
DEF(relocations)
DEF(take)
DEF(significant)
DEF(bytes)
DEF(amounts)
DEF(which)
DEF(isnt)
DEF(exactly)
DEF(easily)
DEF(achieved)
DEF(like)
DEF(this)
DEF(Actually)
DEF(I)
DEF(must)
DEF(cheat)
DEF(by)
DEF(including)
DEF(these)
DEF(phrases)
DEF(several)
DEF(times)

#else
#pragma GCC visibility push(default)
#include <stdlib.h>
#include <stdio.h>

#define DEF(w) static const char str_ ## w[] = #w;
#include "test.c"
#undef DEF

const char *strings[] = {
#define DEF(w) str_ ## w,
#include "test.c"
#include "test.c"
#include "test.c"
};

/* Create a hole between two zones of relative relocations */
const int hole[] = {
    42, 42, 42, 42
};

const char *strings2[] = {
#include "test.c"
#include "test.c"
#include "test.c"
#include "test.c"
#include "test.c"
#undef DEF
};

static int ret = 1;

int print_status() {
    fprintf(stderr, "%s\n", ret ? "FAIL" : "PASS");
    return ret;
}

/* On ARM, this creates a .tbss section before .init_array, which
 * elfhack could then pick instead of .init_array.
 * Also, when .tbss is big enough, elfhack may wrongfully consider
 * following sections as part of the PT_TLS segment. */
__thread int foo[1024];

__attribute__((constructor)) void end_test() {
    static int count = 0;
    /* Only exit when both constructors have been called */
    if (++count == 2)
        ret = 0;
}

__attribute__((constructor)) void test() {
    int i = 0, j = 0;
#define DEF_(a,i,w) \
    if (a[i++] != str_ ## w) return;
#define DEF(w) DEF_(strings,i,w)
#include "test.c"
#include "test.c"
#include "test.c"
#undef DEF
#define DEF(w) DEF_(strings2,j,w)
#include "test.c"
#include "test.c"
#include "test.c"
#include "test.c"
#include "test.c"
#undef DEF
    if (i != sizeof(strings)/sizeof(strings[0]) &&
        j != sizeof(strings2)/sizeof(strings2[0]))
        fprintf(stderr, "WARNING: Test doesn't cover the whole array\n");
    end_test();
}

#pragma GCC visibility pop
#endif