mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-22 07:37:38 +01:00
194 lines
6.7 KiB
C
194 lines
6.7 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2003-2004 Hewlett-Packard Co
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
|
|
|
This file is part of libunwind.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
/* This file tests corner-cases of unwinding across multiple stacks.
|
|
In particular, it verifies that the extreme case with a frame of 96
|
|
stacked registers that are all backed up by separate stacks works
|
|
as expected. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <libunwind.h>
|
|
|
|
#include "ia64-test-rbs.h"
|
|
|
|
#define panic(args...) \
|
|
do { fprintf (stderr, args); ++nerrors; return -9999; } while (0)
|
|
|
|
#define ARRAY_SIZE(a) ((int) (sizeof (a) / sizeof ((a)[0])))
|
|
|
|
/* The loadrs field in ar.rsc is 14 bits wide, which limits all ia64
|
|
implementations to at most 2048 physical stacked registers
|
|
(actually, slightly less than that, because loadrs also counts RNaT
|
|
slots). Since we can dirty 93 stacked registers per recursion, we
|
|
need to recurse RECURSION_DEPTH times to ensure all physical
|
|
stacked registers are in use. */
|
|
#define MAX_PHYS_STACKED 2048
|
|
#define RECURSION_DEPTH ((MAX_PHYS_STACKED + 92) / 93)
|
|
|
|
typedef int spill_func_t (long iteration, int (*next_func[])());
|
|
|
|
extern int loadup (long iteration, int *values, int (*next_func[])());
|
|
extern char resumption_point_label;
|
|
|
|
#define DCL(n) \
|
|
extern int rbs_spill_##n (long iteration, int (*next_func[])())
|
|
DCL(2); DCL(3); DCL(4); DCL(5); DCL(6); DCL(7);
|
|
DCL(8); DCL(9); DCL(10); DCL(11); DCL(12); DCL(13); DCL(14); DCL(15);
|
|
DCL(16); DCL(17); DCL(18); DCL(19); DCL(20); DCL(21); DCL(22); DCL(23);
|
|
DCL(24); DCL(25); DCL(26); DCL(27); DCL(28); DCL(29); DCL(30); DCL(31);
|
|
DCL(32); DCL(33); DCL(34); DCL(35); DCL(36); DCL(37); DCL(38); DCL(39);
|
|
DCL(40); DCL(41); DCL(42); DCL(43); DCL(44); DCL(45); DCL(46); DCL(47);
|
|
DCL(48); DCL(49); DCL(50); DCL(51); DCL(52); DCL(53); DCL(54); DCL(55);
|
|
DCL(56); DCL(57); DCL(58); DCL(59); DCL(60); DCL(61); DCL(62); DCL(63);
|
|
DCL(64); DCL(65); DCL(66); DCL(67); DCL(68); DCL(69); DCL(70); DCL(71);
|
|
DCL(72); DCL(73); DCL(74); DCL(75); DCL(76); DCL(77); DCL(78); DCL(79);
|
|
DCL(80); DCL(81); DCL(82); DCL(83); DCL(84); DCL(85); DCL(86); DCL(87);
|
|
DCL(88); DCL(89); DCL(90); DCL(91); DCL(92); DCL(93); DCL(94);
|
|
|
|
#define SPL(n) rbs_spill_##n
|
|
spill_func_t *spill_funcs[] =
|
|
{
|
|
SPL(2), SPL(3), SPL(4), SPL(5), SPL(6), SPL(7),
|
|
SPL(8), SPL(9), SPL(10), SPL(11), SPL(12), SPL(13), SPL(14), SPL(15),
|
|
SPL(16), SPL(17), SPL(18), SPL(19), SPL(20), SPL(21), SPL(22), SPL(23),
|
|
SPL(24), SPL(25), SPL(26), SPL(27), SPL(28), SPL(29), SPL(30), SPL(31),
|
|
SPL(32), SPL(33), SPL(34), SPL(35), SPL(36), SPL(37), SPL(38), SPL(39),
|
|
SPL(40), SPL(41), SPL(42), SPL(43), SPL(44), SPL(45), SPL(46), SPL(47),
|
|
SPL(48), SPL(49), SPL(50), SPL(51), SPL(52), SPL(53), SPL(54), SPL(55),
|
|
SPL(56), SPL(57), SPL(58), SPL(59), SPL(60), SPL(61), SPL(62), SPL(63),
|
|
SPL(64), SPL(65), SPL(66), SPL(67), SPL(68), SPL(69), SPL(70), SPL(71),
|
|
SPL(72), SPL(73), SPL(74), SPL(75), SPL(76), SPL(77), SPL(78), SPL(79),
|
|
SPL(80), SPL(81), SPL(82), SPL(83), SPL(84), SPL(85), SPL(86), SPL(87),
|
|
SPL(88), SPL(89), SPL(90), SPL(91), SPL(92), SPL(93), SPL(94)
|
|
};
|
|
|
|
static int verbose;
|
|
static int nerrors;
|
|
static int unwind_count;
|
|
|
|
static int
|
|
unwind_and_resume (long iteration, int (*next_func[])())
|
|
{
|
|
unw_context_t uc;
|
|
unw_cursor_t c;
|
|
unw_word_t ip;
|
|
int i, ret;
|
|
|
|
if (verbose)
|
|
printf (" %s(iteration=%ld, next_func=%p)\n",
|
|
__FUNCTION__, iteration, next_func);
|
|
|
|
unw_getcontext (&uc);
|
|
if ((ret = unw_init_local (&c, &uc)) < 0)
|
|
panic ("unw_init_local (ret=%d)", ret);
|
|
|
|
for (i = 0; i < unwind_count; ++i)
|
|
if ((ret = unw_step (&c)) < 0)
|
|
panic ("unw_step (ret=%d)", ret);
|
|
|
|
if (unw_get_reg (&c, UNW_REG_IP, &ip) < 0
|
|
|| unw_set_reg (&c, UNW_REG_IP, (unw_word_t) &resumption_point_label) < 0
|
|
|| unw_set_reg (&c, UNW_REG_EH + 0, 0) /* ret val */
|
|
|| unw_set_reg (&c, UNW_REG_EH + 1, ip))
|
|
panic ("failed to redirect to resumption_point\n");
|
|
|
|
if (verbose)
|
|
{
|
|
unw_word_t bsp;
|
|
if (unw_get_reg (&c, UNW_IA64_BSP, &bsp) < 0)
|
|
panic ("unw_get_reg() failed\n");
|
|
printf (" bsp=%lx, old ip=%lx, new ip=%p\n", bsp,
|
|
ip, &resumption_point_label);
|
|
}
|
|
|
|
ret = unw_resume (&c);
|
|
panic ("unw_resume() returned (ret=%d)!!\n", ret);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
run_check (int test)
|
|
{
|
|
int nfuncs, nspills, n, ret, i, reg_values[88];
|
|
spill_func_t *func[NSTACKS + 1];
|
|
|
|
/* First, generate a set of 88 random values which loadup() will load
|
|
into loc2-loc89 (r37-r124). */
|
|
for (i = 0; i < ARRAY_SIZE (reg_values); ++i)
|
|
{
|
|
reg_values[i] = random ();
|
|
/* Generate NaTs with a reasonably probability (1/16th): */
|
|
if (reg_values[i] < 0x10000000)
|
|
reg_values[i] = 0;
|
|
}
|
|
|
|
nspills = 0;
|
|
nfuncs = 0;
|
|
do
|
|
{
|
|
n = random () % ARRAY_SIZE (spill_funcs);
|
|
func[nfuncs++] = spill_funcs[n];
|
|
nspills += 2 + n;
|
|
}
|
|
while (nspills < 128);
|
|
func[nfuncs++] = unwind_and_resume;
|
|
|
|
unwind_count = 1 + (random () % (nfuncs + RECURSION_DEPTH - 1));
|
|
|
|
if (verbose)
|
|
printf ("test%d: nfuncs=%d, unwind_count=%d\n",
|
|
test, nfuncs, unwind_count);
|
|
|
|
ret = loadup (RECURSION_DEPTH, reg_values, func);
|
|
if (ret < 0)
|
|
panic ("test%d: load() returned %d\n", test, ret);
|
|
else if (ret != RECURSION_DEPTH + nfuncs - unwind_count)
|
|
panic ("test%d: resumed wrong frame: expected %d, got %d\n",
|
|
test, RECURSION_DEPTH + nfuncs - unwind_count, ret);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
int i;
|
|
|
|
if (argc > 1)
|
|
verbose = 1;
|
|
|
|
for (i = 0; i < 100000; ++i)
|
|
run_check (i + 1);
|
|
|
|
if (nerrors > 0)
|
|
{
|
|
fprintf (stderr, "FAILURE: detected %d errors\n", nerrors);
|
|
exit (-1);
|
|
}
|
|
if (verbose)
|
|
printf ("SUCCESS.\n");
|
|
return 0;
|
|
}
|