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626 lines
16 KiB
C
626 lines
16 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2004-2005 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 "compiler.h"
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#ifdef HAVE_SYS_UC_ACCESS_H
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# include <sys/uc_access.h>
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#endif
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#include "tdep-ia64/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 2
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#define MAX_VALUES_PER_FUNC 4
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#define panic(args...) \
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do { printf (args); ++nerrors; } while (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 void flushrs (void);
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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_mem2;
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static check_func_t check_static_to_mem2;
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extern save_func_t save_static_to_mem3;
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static check_func_t check_static_to_mem3;
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extern save_func_t save_static_to_mem4;
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static check_func_t check_static_to_mem4;
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extern save_func_t save_static_to_mem5;
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static check_func_t check_static_to_mem5;
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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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extern save_func_t rotate_regs;
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static check_func_t check_rotate_regs;
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extern save_func_t save_pr;
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static check_func_t check_pr;
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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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{ save_static_to_stacked, check_static_to_stacked },
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{ save_static_to_fr, check_static_to_fr },
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{ save_static_to_br, check_static_to_br },
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{ save_static_to_mem, check_static_to_mem },
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{ save_static_to_mem2, check_static_to_mem2 },
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{ save_static_to_mem3, check_static_to_mem3 },
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{ save_static_to_mem4, check_static_to_mem4 },
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{ save_static_to_mem5, check_static_to_mem5 },
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{ save_static_to_scratch, check_static_to_scratch },
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{ save_pr, check_pr },
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{ rotate_regs, check_rotate_regs },
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};
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static unw_word_t
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random_word (void)
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{
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unw_word_t val = random ();
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if (sizeof (unw_word_t) > 4)
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val |= ((unw_word_t) random ()) << 32;
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return val;
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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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#if defined(__linux)
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{
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long sof;
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int sp;
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if (verbose)
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printf ("sighandler: signal %d sp=%p nat=%08lx pr=%lx\n",
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signal, &sp, uc->uc_mcontext.sc_nat, uc->uc_mcontext.sc_pr);
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sof = uc->uc_mcontext.sc_cfm & 0x7f;
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bsp = (unsigned long *) rse_skip_regs (uc->uc_mcontext.sc_ar_bsp, -sof);
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}
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#elif defined(__hpux)
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if (__uc_get_ar (uc, UNW_IA64_AR_BSP - UNW_IA64_AR, &bsp) != 0)
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{
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panic ("%s: reading of ar.bsp failed, errno=%d", __FUNCTION__, errno);
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return;
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}
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#endif
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flushrs ();
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arg0 = (save_func_t **) *bsp;
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bsp = (unsigned long *) rse_skip_regs ((uint64_t) 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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#if defined(__linux)
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++uc->uc_mcontext.sc_ip;
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#elif defined(HAVE_SYS_UC_ACCESS_H)
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{
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unsigned long ip;
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if (__uc_get_ip (uc, &ip) != 0)
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{
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panic ("%s: reading of ip failed, errno=%d", __FUNCTION__, errno);
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return;
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}
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if (__uc_set_ip (uc, ip) != 0)
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{
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panic ("%s: writing of ip failed, errno=%d", __FUNCTION__, errno);
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return;
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}
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}
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#endif
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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_NODEFER;
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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_NODEFER;
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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;
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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_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_memN (unw_cursor_t *c, unw_word_t *vals, const char *func)
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{
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unw_word_t r6, nat6;
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int ret;
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if (verbose)
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printf (" %s()\n", func);
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vals -= 1;
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if ((ret = unw_get_reg (c, UNW_IA64_GR + 6, &r6)) < 0)
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panic ("%s: failed to read register r6, error=%d\n", __FUNCTION__, ret);
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if ((ret = unw_get_reg (c, UNW_IA64_NAT + 6, &nat6)) < 0)
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panic ("%s: failed to read register nat6, error=%d\n", __FUNCTION__, ret);
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if (verbose)
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printf (" r6 = %c%016lx (expected %c%016lx)\n",
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nat6 ? '*' : ' ', r6, (vals[0] & 1) ? '*' : ' ', vals[0]);
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if (vals[0] & 1)
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{
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if (!nat6)
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panic ("%s: r6 not a NaT!\n", __FUNCTION__);
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}
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else
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{
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if (nat6)
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panic ("%s: r6 a NaT!\n", __FUNCTION__);
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if (r6 != vals[0])
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panic ("%s: r6=%lx instead of %lx!\n", __FUNCTION__, r6, 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_mem2 (unw_cursor_t *c, unw_word_t *vals)
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{
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return check_static_to_memN (c, vals, __FUNCTION__);
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}
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static unw_word_t *
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check_static_to_mem3 (unw_cursor_t *c, unw_word_t *vals)
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{
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return check_static_to_memN (c, vals, __FUNCTION__);
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}
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static unw_word_t *
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check_static_to_mem4 (unw_cursor_t *c, unw_word_t *vals)
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{
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return check_static_to_memN (c, vals, __FUNCTION__);
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}
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static unw_word_t *
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check_static_to_mem5 (unw_cursor_t *c, unw_word_t *vals)
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{
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return check_static_to_memN (c, vals, __FUNCTION__);
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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], ec, expected;
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unw_fpreg_t f4;
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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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if ((ret = unw_get_fpreg (c, UNW_IA64_FR + 4, &f4)) < 0)
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panic ("%s: failed to read f4, error=%d\n", __FUNCTION__, ret);
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/* These tests are little-endian specific: */
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if (nat[0])
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{
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if (f4.raw.bits[0] != 0 || f4.raw.bits[1] != 0x1fffe)
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panic ("%s: f4=%016lx.%016lx instead of NaTVal!\n",
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__FUNCTION__, f4.raw.bits[1], f4.raw.bits[0]);
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}
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else
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{
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if (f4.raw.bits[0] != r[0] || f4.raw.bits[1] != 0x1003e)
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panic ("%s: f4=%016lx.%016lx instead of %lx!\n",
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__FUNCTION__, f4.raw.bits[1], f4.raw.bits[0], r[0]);
|
|
}
|
|
|
|
if ((unw_get_reg (c, UNW_IA64_AR_EC, &ec)) < 0)
|
|
panic ("%s: failed to read register ar.ec, error=%d\n", __FUNCTION__, ret);
|
|
|
|
expected = vals[0] & 0x3f;
|
|
if (ec != expected)
|
|
panic ("%s: ar.ec=%016lx instead of %016lx!\n",
|
|
__FUNCTION__, ec, expected);
|
|
|
|
return vals;
|
|
}
|
|
|
|
static unw_word_t *
|
|
check_pr (unw_cursor_t *c, unw_word_t *vals)
|
|
{
|
|
unw_word_t pr, expected;
|
|
int ret;
|
|
# define BIT(n) ((unw_word_t) 1 << (n))
|
|
# define DONTCARE (BIT( 6) | BIT( 7) | BIT( 8) | BIT( 9) | BIT(10) \
|
|
| BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15))
|
|
|
|
if (verbose)
|
|
printf (" %s()\n", __FUNCTION__);
|
|
|
|
vals -= 1;
|
|
|
|
if ((ret = unw_get_reg (c, UNW_IA64_PR, &pr)) < 0)
|
|
panic ("%s: failed to read register pr, error=%d\n", __FUNCTION__, ret);
|
|
|
|
pr &= ~DONTCARE;
|
|
expected = (vals[0] & ~DONTCARE) | 1;
|
|
|
|
if (verbose)
|
|
printf (" pr = %016lx (expected %016lx)\n", pr, expected);
|
|
|
|
if (pr != expected)
|
|
panic ("%s: pr=%lx instead of %lx!\n", __FUNCTION__, pr, expected);
|
|
|
|
if ((ret = unw_set_reg (c, UNW_IA64_PR, vals[0])) < 0)
|
|
panic ("%s: failed to write register pr, error=%d\n", __FUNCTION__, ret);
|
|
|
|
if ((ret = unw_get_reg (c, UNW_IA64_PR, &pr)) < 0)
|
|
panic ("%s: failed to read register pr, error=%d\n", __FUNCTION__, ret);
|
|
|
|
if (pr != vals[0])
|
|
panic ("%s: secondary pr=%lx instead of %lx!\n",
|
|
__FUNCTION__, pr, vals[0]);
|
|
return vals;
|
|
}
|
|
|
|
static unw_word_t *
|
|
check_rotate_regs (unw_cursor_t *c, unw_word_t *vals)
|
|
{
|
|
if (verbose)
|
|
printf (" %s()\n", __FUNCTION__);
|
|
return check_pr (c, vals - 1);
|
|
}
|
|
|
|
static void
|
|
start_checks (void *funcs, unsigned long *vals)
|
|
{
|
|
unw_context_t uc;
|
|
unw_cursor_t c;
|
|
int i, ret;
|
|
|
|
disable_sighandler ();
|
|
|
|
unw_getcontext (&uc);
|
|
|
|
if ((ret = unw_init_local (&c, &uc)) < 0)
|
|
panic ("%s: unw_init_local (ret=%d)\n", __FUNCTION__, ret);
|
|
|
|
if ((ret = unw_step (&c)) < 0)
|
|
panic ("%s: unw_step (ret=%d)\n", __FUNCTION__, ret);
|
|
|
|
for (i = 0; i < num_checks; ++i)
|
|
{
|
|
vals = (*checks[num_checks - 1 - i]) (&c, vals);
|
|
|
|
if ((ret = unw_step (&c)) < 0)
|
|
panic ("%s: unw_step (ret=%d)\n", __FUNCTION__, ret);
|
|
}
|
|
}
|
|
|
|
static void
|
|
run_check (int test)
|
|
{
|
|
int index, i;
|
|
|
|
if (test == 1)
|
|
/* Make first test always go the full depth... */
|
|
num_checks = MAX_CHECKS;
|
|
else
|
|
num_checks = (random () % MAX_CHECKS) + 1;
|
|
|
|
for (i = 0; i < num_checks * MAX_VALUES_PER_FUNC; ++i)
|
|
values[i] = random_word ();
|
|
|
|
for (i = 0; i < num_checks; ++i)
|
|
{
|
|
if (test == 1)
|
|
/* Make first test once go through each test... */
|
|
index = i % (int) ARRAY_SIZE (all_funcs);
|
|
else
|
|
index = random () % (int) ARRAY_SIZE (all_funcs);
|
|
funcs[i] = all_funcs[index].func;
|
|
checks[i] = all_funcs[index].check;
|
|
}
|
|
|
|
funcs[num_checks] = start_checks;
|
|
|
|
enable_sighandler ();
|
|
(*funcs[0]) (funcs + 1, values);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
int i;
|
|
|
|
if (argc > 1)
|
|
verbose = 1;
|
|
|
|
for (i = 0; i < NUM_RUNS; ++i)
|
|
{
|
|
if (verbose)
|
|
printf ("Run %d\n", i + 1);
|
|
run_check (i + 1);
|
|
}
|
|
|
|
if (nerrors > 0)
|
|
{
|
|
fprintf (stderr, "FAILURE: detected %d errors\n", nerrors);
|
|
exit (-1);
|
|
}
|
|
if (verbose)
|
|
printf ("SUCCESS.\n");
|
|
return 0;
|
|
}
|