1
0
Fork 0
mirror of https://github.com/tobast/libunwind-eh_elf.git synced 2024-11-15 20:58:13 +01:00
libunwind-eh_elf/tests/verify.c
mostang.com!davidm 0660b2b7bb mvdir
(Logical change 1.7)
2002-02-23 20:27:03 +00:00

137 lines
3.2 KiB
C

/* libunwind - a platform-independent unwind library
Copyright (C) 2001-2002 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
libunwind 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 2, or (at your option)
any later version.
libunwind 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. */
#include <stdio.h>
#include <stdlib.h>
#include <unwind.h>
#define panic(args...) \
{ fprintf (stderr, args); exit (-1); }
static void
init_state (unw_context_t *ucp)
{
int i;
ucp->uc_mcontext.sc_flags = 0;
ucp->uc_mcontext.sc_ar_ccv = random ();
ucp->uc_mcontext.sc_ar_lc = random ();
ucp->uc_mcontext.sc_pr = random ();
#if 0
ucp->uc_mcontext.sc_ip = xxx;
ucp->uc_mcontext.sc_cfm = xxx;
ucp->uc_mcontext.sc_um = xxx;
ucp->uc_mcontext.sc_ar_rsc = xxx;
ucp->uc_mcontext.sc_ar_bsp = xxx;
ucp->uc_mcontext.sc_ar_rnat = xxx;
ucp->uc_mcontext.sc_ar_unat = xxx;
ucp->uc_mcontext.sc_ar_fpsr = xxx;
ucp->uc_mcontext.sc_ar_pfs = xxx;
#endif
/* initialize static registers without trashing gp (r1), sp (r12),
or tp (r13). */
for (i = 2; i < 32; ++i)
{
if (i != 12 && i != 13)
{
ucp->uc_mcontext.sc_gr[i] = random ();
ucp->uc_mcontext.sc_nat |= (random () & 1) << i;
}
}
#if 0
/* initialize stacked registers: */
for (i = 32; i < 128; ++i)
{
xxx;
}
#endif
for (i = 0; i < 8; ++i)
ucp->uc_mcontext.sc_br[i] = random ();
for (i = 0; i < 128; ++i)
{
ucp->uc_mcontext.sc_fr[i].u.bits[0] = random ();
ucp->uc_mcontext.sc_fr[i].u.bits[0] = random ();
}
#if 0
ucp->uc_mcontext.sc_rbs_base = xxx;
ucp->uc_mcontext.sc_loadrs = xxx;
ucp->uc_mcontext.sc_ar25 = xxx;
ucp->uc_mcontext.sc_ar26 = xxx;
#endif
}
static void
check_state (ucontext_t *orig_state, unw_cursor_t *c)
{
unw_word_t val;
unw_get_reg (c, UNW_REG_IP, &val);
printf ("IP: orig=%016lx now=%016lx\n", orig_state->uc_mcontext.sc_ip, val);
}
static void
setup_context (ucontext_t *unwind_ucp)
{
asm volatile ("mov ar.fpsr = %0" :: "r"(0x9804c8a70033f));
init_state (unwind_ucp);
setcontext (unwind_ucp);
}
static void
check (ucontext_t *unwind_ucp, ucontext_t *setup_ucp,
void (*doit) (ucontext_t *))
{
swapcontext (unwind_ucp, setup_ucp);
(*doit) (unwind_ucp);
}
static void
test1 (ucontext_t *orig_state)
{
unw_cursor_t cursor;
ucontext_t uc;
getcontext (&uc);
if (unw_init_local (&cursor, &uc) < 0)
panic ("unw_init_local failed\n");
if (unw_step (&cursor) < 0)
panic ("unw_step failed\n");
check_state (orig_state, &cursor);
}
int
main (int argc, char **argv)
{
ucontext_t unwind_uc, setup_uc;
unsigned char stack_mem[256*1024];
setup_uc.uc_stack.ss_sp = stack_mem;
setup_uc.uc_stack.ss_flags = 0;
setup_uc.uc_stack.ss_size = sizeof (stack_mem);
makecontext (&setup_uc, (void (*) (void)) setup_context,
2, &setup_uc, &unwind_uc);
check (&unwind_uc, &setup_uc, test1);
return 0;
}