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428 lines
10 KiB
C
428 lines
10 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2004 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/* This file tests corner-cases of NaT-bit handling. */
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libunwind.h>
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#include <asm/rse.h>
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//#define NUM_RUNS 1024
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#define NUM_RUNS 1
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//#define MAX_CHECKS 1024
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#define MAX_CHECKS 4
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#define MAX_VALUES_PER_FUNC 4
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#define panic(args...) \
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do { fprintf (stderr, args); ++nerrors; } while (0)
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#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
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typedef void save_func_t (void *funcs, unsigned long *vals);
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typedef unw_word_t *check_func_t (unw_cursor_t *c, unsigned long *vals);
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extern save_func_t save_static_to_stacked;
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static check_func_t check_static_to_stacked;
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extern save_func_t save_static_to_fr;
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static check_func_t check_static_to_fr;
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extern save_func_t save_static_to_br;
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static check_func_t check_static_to_br;
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extern save_func_t save_static_to_mem;
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static check_func_t check_static_to_mem;
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extern save_func_t save_static_to_scratch;
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static check_func_t check_static_to_scratch;
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static int verbose;
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static int nerrors;
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static int num_checks;
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static save_func_t *funcs[MAX_CHECKS + 1];
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static check_func_t *checks[MAX_CHECKS];
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static unw_word_t values[MAX_CHECKS*MAX_VALUES_PER_FUNC];
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static struct
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{
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save_func_t *func;
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check_func_t *check;
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}
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all_funcs[] =
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{
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#if 0
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{ save_static_to_stacked, check_static_to_stacked },
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{ save_static_to_fr, check_static_to_fr }
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#endif
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{ save_static_to_br, check_static_to_br }
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#if 0
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{ save_static_to_mem, check_static_to_mem }
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{ save_static_to_scratch, check_static_to_scratch }
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#endif
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};
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void
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sighandler (int signal, void *siginfo, void *context)
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{
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unsigned long *bsp, *arg1;
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save_func_t **arg0;
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ucontext_t *uc = context;
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long sof;
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int sp;
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printf ("sighandler: got signal %d, sp=%p, nat=%lx\n",
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signal, &sp, uc->uc_mcontext.sc_nat);
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sof = uc->uc_mcontext.sc_cfm & 0x7f;
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bsp = ia64_rse_skip_regs ((unsigned long *) uc->uc_mcontext.sc_ar_bsp,
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-sof);
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arg0 = (save_func_t **) *bsp;
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bsp = ia64_rse_skip_regs (bsp, 1);
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arg1 = (unsigned long *) *bsp;
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(*arg0[0]) (arg0 + 1, arg1);
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/* skip over the instruction which triggered sighandler() */
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++uc->uc_mcontext.sc_ip;
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}
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static void
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enable_sighandler (void)
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{
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struct sigaction act;
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memset (&act, 0, sizeof (act));
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act.sa_handler = (void (*)(int)) sighandler;
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act.sa_flags = SA_SIGINFO | SA_NOMASK;
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if (sigaction (SIGSEGV, &act, NULL) < 0)
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panic ("sigaction: %s\n", strerror (errno));
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}
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static void
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disable_sighandler (void)
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{
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struct sigaction act;
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memset (&act, 0, sizeof (act));
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act.sa_handler = SIG_DFL;
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act.sa_flags = SA_SIGINFO | SA_NOMASK;
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if (sigaction (SIGSEGV, &act, NULL) < 0)
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panic ("sigaction: %s\n", strerror (errno));
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}
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static unw_word_t *
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check_static_to_stacked (unw_cursor_t *c, unw_word_t *vals)
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{
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unw_word_t r[4];
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unw_word_t nat[4];
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int i, ret;
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if (verbose)
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printf (" %s()\n", __FUNCTION__);
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vals -= 4;
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for (i = 0; i < 4; ++i)
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if ((ret = unw_get_reg (c, UNW_IA64_GR + 4 + i, &r[i])) < 0)
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panic ("%s: failed to read register r%d, error=%d\n",
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__FUNCTION__, 4 + i, ret);
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for (i = 0; i < 4; ++i)
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if ((ret = unw_get_reg (c, UNW_IA64_NAT + 4 + i, &nat[i])) < 0)
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panic ("%s: failed to read register nat%d, error=%d\n",
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__FUNCTION__, 4 + i, ret);
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for (i = 0; i < 4; ++i)
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{
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if (verbose)
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printf (" r%d = %c%016lx (expected %c%016lx)\n",
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4 + i, nat[i] ? '*' : ' ', r[i],
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(vals[i] & 1) ? '*' : ' ', vals[i]);
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if (vals[i] & 1)
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{
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if (!nat[i])
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panic ("%s: r%d not a NaT!\n", __FUNCTION__, 4 + i);
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}
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else
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{
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if (nat[i])
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panic ("%s: r%d a NaT!\n", __FUNCTION__, 4 + i);
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if (r[i] != vals[i])
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panic ("%s: r%d=%lx instead of %lx!\n",
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__FUNCTION__, 4 + i, r[i], vals[i]);
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}
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}
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return vals;
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}
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static unw_word_t *
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check_static_to_fr (unw_cursor_t *c, unw_word_t *vals)
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{
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unw_word_t r4;
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unw_word_t nat4;
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int ret;
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if (verbose)
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printf (" %s()\n", __FUNCTION__);
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vals -= 1;
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if ((ret = unw_get_reg (c, UNW_IA64_GR + 4, &r4)) < 0)
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panic ("%s: failed to read register r4, error=%d\n", __FUNCTION__, ret);
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if ((ret = unw_get_reg (c, UNW_IA64_NAT + 4, &nat4)) < 0)
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panic ("%s: failed to read register nat4, error=%d\n", __FUNCTION__, ret);
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if (verbose)
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printf (" r4 = %c%016lx (expected %c%016lx)\n",
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nat4 ? '*' : ' ', r4, (vals[0] & 1) ? '*' : ' ', vals[0]);
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if (vals[0] & 1)
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{
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if (!nat4)
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panic ("%s: r4 not a NaT!\n", __FUNCTION__);
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}
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else
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{
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if (nat4)
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panic ("%s: r4 a NaT!\n", __FUNCTION__);
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if (r4 != vals[0])
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panic ("%s: r4=%lx instead of %lx!\n", __FUNCTION__, r4, vals[0]);
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}
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return vals;
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}
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static unw_word_t *
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check_static_to_br (unw_cursor_t *c, unw_word_t *vals)
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{
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unw_word_t r4, nat4, pr;
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int ret;
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if (verbose)
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printf (" %s()\n", __FUNCTION__);
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if ((ret = unw_get_reg (c, UNW_IA64_PR, &pr)) < 0)
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panic ("%s: failed to read register pr, error=%d\n", __FUNCTION__, ret);
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if (!(pr & 1))
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/* r4 contained a NaT, so the routine didn't do anything. */
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return vals;
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vals -= 1;
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if ((ret = unw_get_reg (c, UNW_IA64_GR + 4, &r4)) < 0)
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panic ("%s: failed to read register r4, error=%d\n", __FUNCTION__, ret);
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if ((ret = unw_get_reg (c, UNW_IA64_NAT + 4, &nat4)) < 0)
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panic ("%s: failed to read register nat4, error=%d\n", __FUNCTION__, ret);
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if (verbose)
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printf (" r4 = %c%016lx (expected %c%016lx)\n",
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nat4 ? '*' : ' ', r4, (vals[0] & 1) ? '*' : ' ', vals[0]);
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if (vals[0] & 1)
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{
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if (!nat4)
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panic ("%s: r4 not a NaT!\n", __FUNCTION__);
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}
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else
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{
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if (nat4)
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panic ("%s: r4 a NaT!\n", __FUNCTION__);
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if (r4 != vals[0])
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panic ("%s: r4=%lx instead of %lx!\n", __FUNCTION__, r4, vals[0]);
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}
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return vals;
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}
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static unw_word_t *
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check_static_to_mem (unw_cursor_t *c, unw_word_t *vals)
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{
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unw_word_t r5, nat5;
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int ret;
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if (verbose)
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printf (" %s()\n", __FUNCTION__);
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vals -= 1;
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if ((ret = unw_get_reg (c, UNW_IA64_GR + 5, &r5)) < 0)
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panic ("%s: failed to read register r5, error=%d\n", __FUNCTION__, ret);
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if ((ret = unw_get_reg (c, UNW_IA64_NAT + 5, &nat5)) < 0)
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panic ("%s: failed to read register nat5, error=%d\n", __FUNCTION__, ret);
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if (verbose)
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printf (" r5 = %c%016lx (expected %c%016lx)\n",
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nat5 ? '*' : ' ', r5, (vals[0] & 1) ? '*' : ' ', vals[0]);
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if (vals[0] & 1)
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{
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if (!nat5)
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panic ("%s: r5 not a NaT!\n", __FUNCTION__);
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}
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else
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{
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if (nat5)
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panic ("%s: r5 a NaT!\n", __FUNCTION__);
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if (r5 != vals[0])
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panic ("%s: r5=%lx instead of %lx!\n", __FUNCTION__, r5, vals[0]);
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}
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return vals;
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}
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static unw_word_t *
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check_static_to_scratch (unw_cursor_t *c, unw_word_t *vals)
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{
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unw_word_t r[4], nat[4];
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int i, ret;
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if (verbose)
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printf (" %s()\n", __FUNCTION__);
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vals -= 4;
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while (!unw_is_signal_frame (c))
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if ((ret = unw_step (c)) < 0)
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panic ("%s: unw_step (ret=%d): Failed to skip over signal handler\n",
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__FUNCTION__, ret);
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if ((ret = unw_step (c)) < 0)
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panic ("%s: unw_step (ret=%d): Failed to skip over signal handler\n",
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__FUNCTION__, ret);
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for (i = 0; i < 4; ++i)
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if ((ret = unw_get_reg (c, UNW_IA64_GR + 4 + i, &r[i])) < 0)
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panic ("%s: failed to read register r%d, error=%d\n",
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__FUNCTION__, 4 + i, ret);
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for (i = 0; i < 4; ++i)
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if ((ret = unw_get_reg (c, UNW_IA64_NAT + 4 + i, &nat[i])) < 0)
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panic ("%s: failed to read register nat%d, error=%d\n",
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__FUNCTION__, 4 + i, ret);
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for (i = 0; i < 4; ++i)
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{
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if (verbose)
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printf (" r%d = %c%016lx (expected %c%016lx)\n",
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4 + i, nat[i] ? '*' : ' ', r[i],
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(vals[i] & 1) ? '*' : ' ', vals[i]);
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if (vals[i] & 1)
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{
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if (!nat[i])
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panic ("%s: r%d not a NaT!\n", __FUNCTION__, 4 + i);
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}
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else
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{
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if (nat[i])
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panic ("%s: r%d a NaT!\n", __FUNCTION__, 4 + i);
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if (r[i] != vals[i])
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panic ("%s: r%d=%lx instead of %lx!\n",
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__FUNCTION__, 4 + i, r[i], vals[i]);
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}
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}
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return vals;
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}
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static void
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start_checks (void *funcs, unsigned long *vals)
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{
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unw_context_t uc;
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unw_cursor_t c;
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int i, ret;
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disable_sighandler ();
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unw_getcontext (&uc);
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if ((ret = unw_init_local (&c, &uc)) < 0)
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panic ("%s: unw_init_local (ret=%d)\n", __FUNCTION__, ret);
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if ((ret = unw_step (&c)) < 0)
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panic ("%s: unw_step (ret=%d)\n", __FUNCTION__, ret);
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for (i = 0; i < num_checks; ++i)
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{
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vals = (*checks[i]) (&c, vals);
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if ((ret = unw_step (&c)) < 0)
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panic ("%s: unw_step (ret=%d)\n", __FUNCTION__, ret);
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}
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}
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static void
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run_check (int test)
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{
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int index, i;
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num_checks = (random () % MAX_CHECKS) + 1;
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for (i = 0; i < num_checks * MAX_VALUES_PER_FUNC; ++i)
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values[i] = random ();
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for (i = 0; i < num_checks; ++i)
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{
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index = random () % NELEMS (all_funcs);
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funcs[i] = all_funcs[index].func;
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checks[i] = all_funcs[index].check;
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}
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funcs[num_checks] = start_checks;
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enable_sighandler ();
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(*funcs[0]) (funcs + 1, values);
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}
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int
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main (int argc, char **argv)
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{
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int i;
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if (argc > 1)
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verbose = 1;
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for (i = 0; i < NUM_RUNS; ++i)
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{
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if (verbose)
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printf ("Run %d\n", i + 1);
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run_check (i + 1);
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}
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if (nerrors > 0)
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{
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fprintf (stderr, "FAILURE: detected %d errors\n", nerrors);
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exit (-1);
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}
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if (verbose)
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printf ("SUCCESS.\n");
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return 0;
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}
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