mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-12-22 19:43:42 +01:00
mvdir
}(Logical change 1.7)
This commit is contained in:
mostang.com!davidm
parent
0660b2b7bb
commit
468db8fdea
4 changed files with 0 additions and 382 deletions
|
|
@ -1,74 +0,0 @@
|
|||
/* 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 <execinfo.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <libunwind.h>
|
||||
|
||||
#define panic(args...) \
|
||||
{ fprintf (stderr, args); exit (-1); }
|
||||
|
||||
static void
|
||||
do_backtrace (void)
|
||||
{
|
||||
unw_cursor_t cursor;
|
||||
unw_word_t ip, sp;
|
||||
unw_context_t uc;
|
||||
|
||||
unw_getcontext (&uc);
|
||||
if (unw_init_local (&cursor, &uc) < 0)
|
||||
panic ("unw_init_local failed!\n");
|
||||
|
||||
do
|
||||
{
|
||||
unw_get_reg (&cursor, UNW_REG_IP, &ip);
|
||||
unw_get_reg (&cursor, UNW_REG_SP, &sp);
|
||||
printf ("ip=%016lx sp=%016lx\n", ip, sp);
|
||||
|
||||
{
|
||||
unw_word_t proc_start, handler, lsda, bsp;
|
||||
|
||||
unw_get_reg (&cursor, UNW_REG_PROC_START, &proc_start);
|
||||
unw_get_reg (&cursor, UNW_REG_HANDLER, &handler);
|
||||
unw_get_reg (&cursor, UNW_REG_LSDA, &lsda);
|
||||
unw_get_reg (&cursor, UNW_IA64_CURRENT_BSP, &bsp);
|
||||
printf ("\tproc_start=%016lx handler=%lx lsda=%lx bsp=%lx\n",
|
||||
proc_start, handler, lsda, bsp);
|
||||
}
|
||||
}
|
||||
while (unw_step (&cursor) > 0);
|
||||
}
|
||||
|
||||
static void
|
||||
foo (void)
|
||||
{
|
||||
void *buffer[20];
|
||||
int i, n;
|
||||
|
||||
do_backtrace ();
|
||||
|
||||
n = backtrace (buffer, 20);
|
||||
for (i = 0; i < n; ++i)
|
||||
printf ("[%d] ip=%p\n", i, buffer[i]);
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
foo ();
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,89 +0,0 @@
|
|||
/* 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. */
|
||||
|
||||
/* This illustrates the basics of using the unwind interface for
|
||||
exception handling. */
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <libunwind.h>
|
||||
|
||||
#define panic(args...) \
|
||||
{ fprintf (stderr, args); exit (-1); }
|
||||
|
||||
int true = 1;
|
||||
|
||||
static void
|
||||
raise_exception (void *addr)
|
||||
{
|
||||
unw_cursor_t cursor;
|
||||
unw_word_t ip;
|
||||
unw_context_t uc;
|
||||
|
||||
unw_getcontext (&uc);
|
||||
if (unw_init_local (&cursor, &uc) < 0)
|
||||
panic ("unw_init_local() failed!\n");
|
||||
|
||||
/* unwind to frame b(): */
|
||||
if (unw_step (&cursor) < 0)
|
||||
panic ("unw_step() failed!\n");
|
||||
|
||||
/* unwind to frame a(): */
|
||||
if (unw_step (&cursor) < 0)
|
||||
panic ("unw_step() failed!\n");
|
||||
|
||||
unw_get_reg (&cursor, UNW_REG_IP, &ip);
|
||||
printf ("ip = %lx\n", ip);
|
||||
|
||||
if (unw_set_reg (&cursor, UNW_REG_IP, (unw_word_t) addr) < 0)
|
||||
panic ("unw_set_reg() failed!\n");
|
||||
|
||||
unw_resume (&cursor); /* transfer control to exception handler */
|
||||
}
|
||||
|
||||
static void
|
||||
b (void *addr)
|
||||
{
|
||||
printf ("b() calling raise_exception()\n");
|
||||
raise_exception (addr);
|
||||
}
|
||||
|
||||
static int
|
||||
a (void)
|
||||
{
|
||||
register long sp asm ("r12");
|
||||
printf("a: sp=%lx bsp=%p\n", sp, __builtin_ia64_bsp ());
|
||||
b (&&handler);
|
||||
printf ("unexpected return from func()!\n");
|
||||
|
||||
if (true)
|
||||
return -1;
|
||||
|
||||
handler:
|
||||
printf ("exception handler: here we go (sp=%lx, bsp=%p)...\n",
|
||||
sp, __builtin_ia64_bsp ());
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
if (a () == 0)
|
||||
printf ("test succeeded!\n");
|
||||
else
|
||||
printf ("bummer: test failed; try again?\n");
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,82 +0,0 @@
|
|||
/* 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. */
|
||||
|
||||
/* This shows how to use the unwind interface to modify any ancestor
|
||||
frame while still returning to the parent frame. */
|
||||
|
||||
#include <signal.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include <unwind.h>
|
||||
|
||||
#define panic(args...) \
|
||||
{ fprintf (stderr, args); exit (-1); }
|
||||
|
||||
static void
|
||||
sighandler (int signal)
|
||||
{
|
||||
unw_cursor_t cursor, cursor2;
|
||||
unw_word_t rp;
|
||||
unw_context_t uc;
|
||||
|
||||
printf ("caught signal %d\n", signal);
|
||||
|
||||
unw_getcontext(&uc);
|
||||
|
||||
if (unw_init (&cursor, &uc) < 0)
|
||||
panic ("unw_init() failed!\n");
|
||||
|
||||
/* get cursor for caller of sighandler: */
|
||||
if (unw_step (&cursor) < 0)
|
||||
panic ("unw_step() failed!\n");
|
||||
|
||||
cursor2 = cursor;
|
||||
while (!unw_is_signal_frame (&cursor2))
|
||||
if (unw_step (&cursor2) < 0)
|
||||
panic ("failed to find signal frame!\n");
|
||||
|
||||
if (unw_get_reg (&cursor2, UNW_REG_RP, &rp) < 0)
|
||||
panic ("failed to get IP!\n");
|
||||
|
||||
/* skip faulting instruction (doesn't handle MLX template) */
|
||||
++rp;
|
||||
if (rp & 0x3 == 0x3)
|
||||
rp += 13;
|
||||
|
||||
if (unw_set_reg (&cursor2, UNW_REG_RP, rp) < 0)
|
||||
panic ("failed to set IP!\n");
|
||||
|
||||
unw_resume (&cursor); /* update context & return to caller of sighandler() */
|
||||
|
||||
panic ("unexpected return from unw_resume()!\n");
|
||||
}
|
||||
|
||||
static void
|
||||
doit (char *p)
|
||||
{
|
||||
int ch;
|
||||
|
||||
ch = *p; /* trigger SIGSEGV */
|
||||
|
||||
printf ("doit: finishing execution!\n");
|
||||
}
|
||||
|
||||
int
|
||||
main (int argc, char **argv)
|
||||
{
|
||||
signal (SIGSEGV, sighandler);
|
||||
doit (0);
|
||||
}
|
||||
|
|
@ -1,137 +0,0 @@
|
|||
/* 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;
|
||||
}
|
||||
Loading…
Reference in a new issue