mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-05 01:09:27 +01:00
101 lines
3.5 KiB
C
101 lines
3.5 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2003 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 <libunwind.h>
|
|
#include <stdio.h>
|
|
|
|
/* 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 95 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 + 94) / 95)
|
|
|
|
extern void touch_all (unsigned long recursion_depth);
|
|
extern void flushrs (void);
|
|
|
|
void
|
|
do_unwind_tests (void)
|
|
{
|
|
unw_word_t ip, sp, bsp, v0, v1, v2, v3, n0, n1, n2, n3;
|
|
unw_context_t uc;
|
|
unw_cursor_t c;
|
|
int ret, reg;
|
|
|
|
printf ("do_unwind_tests: here we go!\n");
|
|
|
|
unw_getcontext (&uc);
|
|
unw_init_local (&c, &uc);
|
|
|
|
do
|
|
{
|
|
if ((ret = unw_get_reg (&c, UNW_IA64_IP, &ip)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_SP, &sp)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_BSP, &bsp)) < 0)
|
|
break;
|
|
printf ("ip=0x%16lx sp=0x%16lx bsp=0x%16lx\n", ip, sp, bsp);
|
|
|
|
for (reg = 32; reg < 128; reg += 4)
|
|
{
|
|
v0 = v1 = v2 = v3 = 0;
|
|
n0 = n1 = n2 = n3 = 0;
|
|
((ret = unw_get_reg (&c, UNW_IA64_GR + reg, &v0)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_NAT + reg, &n0)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_GR + reg + 1, &v1)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_NAT + reg + 1, &n1)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_GR + reg + 2, &v2)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_NAT + reg + 2, &n2)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_GR + reg + 3, &v3)) < 0
|
|
|| (ret = unw_get_reg (&c, UNW_IA64_NAT + reg + 3, &n3)) < 0);
|
|
if (reg < 100)
|
|
printf (" r%d", reg);
|
|
else
|
|
printf (" r%d", reg);
|
|
printf (" %c%016lx %c%016lx %c%016lx %c%016lx\n",
|
|
n0 ? '*' : ' ', v0, n1 ? '*' : ' ', v1,
|
|
n2 ? '*' : ' ', v2, n3 ? '*' : ' ', v3);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
}
|
|
while ((ret = unw_step (&c)) > 0);
|
|
|
|
if (ret < 0)
|
|
printf ("libunwind returned %d\n", ret);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
touch_all (RECURSION_DEPTH);
|
|
return 0;
|
|
}
|