diff options
Diffstat (limited to 'src/third_party/unwind/dist/tests/test-proc-info.c')
| -rw-r--r-- | src/third_party/unwind/dist/tests/test-proc-info.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/tests/test-proc-info.c b/src/third_party/unwind/dist/tests/test-proc-info.c new file mode 100644 index 00000000000..c4145bc374e --- /dev/null +++ b/src/third_party/unwind/dist/tests/test-proc-info.c @@ -0,0 +1,171 @@ +/* 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. + +Copyright (c) 2003 Hewlett-Packard Co. + +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 test program checks whether proc_info lookup failures are + cached. They must NOT be cached because it could otherwise turn + temporary failures into permanent ones. Furthermore, we allow apps + to return -UNW_ESTOPUNWIND to terminate unwinding (though this + feature is deprecated and dynamic unwind info should be used + instead). */ + +#include <stdio.h> +#include <string.h> + +#include <libunwind.h> +#include "compiler.h" + +int errors; + +#define panic(args...) \ + { ++errors; fprintf (stderr, args); return -1; } + +static int +find_proc_info (unw_addr_space_t as UNUSED, + unw_word_t ip UNUSED, + unw_proc_info_t *pip UNUSED, + int need_unwind_info UNUSED, + void *arg UNUSED) +{ + return -UNW_ESTOPUNWIND; +} + +static int +access_mem (unw_addr_space_t as UNUSED, + unw_word_t addr UNUSED, + unw_word_t *valp, int write, + void *arg UNUSED) +{ + if (!write) + *valp = 0; + return 0; +} + +static int +access_reg (unw_addr_space_t as UNUSED, + unw_regnum_t regnum UNUSED, + unw_word_t *valp, int write, + void *arg UNUSED) +{ + if (!write) + *valp = 32; + return 0; +} + +static int +access_fpreg (unw_addr_space_t as UNUSED, + unw_regnum_t regnum UNUSED, + unw_fpreg_t *valp, int write, + void *arg UNUSED) +{ + if (!write) + memset (valp, 0, sizeof (*valp)); + return 0; +} + +static int +get_dyn_info_list_addr (unw_addr_space_t as UNUSED, + unw_word_t *dilap UNUSED, + void *arg UNUSED) +{ + return -UNW_ENOINFO; +} + +static void +put_unwind_info (unw_addr_space_t as UNUSED, + unw_proc_info_t *pi UNUSED, + void *arg UNUSED) +{ + ++errors; + fprintf (stderr, "%s() got called!\n", __FUNCTION__); +} + +static int +resume (unw_addr_space_t as UNUSED, + unw_cursor_t *reg UNUSED, + void *arg UNUSED) +{ + panic ("%s() got called!\n", __FUNCTION__); +} + +static int +get_proc_name (unw_addr_space_t as UNUSED, + unw_word_t ip UNUSED, + char *buf UNUSED, + size_t buf_len UNUSED, + unw_word_t *offp UNUSED, + void *arg UNUSED) +{ + panic ("%s() got called!\n", __FUNCTION__); +} + +int +main (int argc, char **argv) +{ + unw_accessors_t acc; + unw_addr_space_t as; + int ret, verbose = 0; + unw_cursor_t c; + + if (argc > 1 && strcmp (argv[1], "-v") == 0) + verbose = 1; + + memset (&acc, 0, sizeof (acc)); + acc.find_proc_info = find_proc_info; + acc.put_unwind_info = put_unwind_info; + acc.get_dyn_info_list_addr = get_dyn_info_list_addr; + acc.access_mem = access_mem; + acc.access_reg = access_reg; + acc.access_fpreg = access_fpreg; + acc.resume = resume; + acc.get_proc_name = get_proc_name; + + as = unw_create_addr_space (&acc, 0); + if (!as) + panic ("unw_create_addr_space() failed\n"); + + unw_set_caching_policy (as, UNW_CACHE_GLOBAL); + + ret = unw_init_remote (&c, as, NULL); + if (ret < 0) + panic ("unw_init_remote() returned %d instead of 0\n", ret); + + ret = unw_step (&c); + if (ret != -UNW_ESTOPUNWIND) + panic ("First call to unw_step() returned %d instead of %d\n", + ret, -UNW_ESTOPUNWIND); + + ret = unw_step (&c); + if (ret != -UNW_ESTOPUNWIND) + panic ("Second call to unw_step() returned %d instead of %d\n", + ret, -UNW_ESTOPUNWIND); + + unw_destroy_addr_space (as); + + if (verbose) + printf ("SUCCESS\n"); + return 0; +} |