From f77ee147ace13e3d500dc3d4468cb1b0dec2b0a4 Mon Sep 17 00:00:00 2001 From: "hp.com!davidm" Date: Sat, 22 Feb 2003 03:08:22 +0000 Subject: [PATCH] Delete UNW_LOCAL_ONLY. 2003/02/21 18:58:12-08:00 hp.com!davidm Rename: tests/test-exc.c -> tests/Gtest-exc.c (Logical change 1.53) --- tests/Gtest-exc.c | 142 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 142 insertions(+) diff --git a/tests/Gtest-exc.c b/tests/Gtest-exc.c index e69de29b..0dea89dd 100644 --- a/tests/Gtest-exc.c +++ b/tests/Gtest-exc.c @@ -0,0 +1,142 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2001-2003 Hewlett-Packard Co + Contributed by David Mosberger-Tang + +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 illustrates the basics of using the unwind interface for + exception handling. */ + +#include +#include +#include + +#include + +#define panic(args...) \ + { ++nerrors; fprintf (stderr, args); } + +int nerrors = 0; +int verbose = 0; + +static void b (void *); + +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"); + return; + } + + /* unwind to frame b(): */ + if (unw_step (&cursor) < 0) + { + panic ("unw_step() failed!\n"); + return; + } + + /* unwind to frame a(): */ + if (unw_step (&cursor) < 0) + { + panic ("unw_step() failed!\n"); + return; + } + + unw_get_reg (&cursor, UNW_REG_IP, &ip); + if (verbose) + printf ("old ip = %lx, new ip = %p\n", (long) ip, addr); + + if (unw_set_reg (&cursor, UNW_REG_IP, (unw_word_t) addr) < 0) + { + panic ("unw_set_reg() failed!\n"); + return; + } + + unw_resume (&cursor); /* transfer control to exception handler */ +} + +#if !UNW_TARGET_IA64 + +void * +__builtin_ia64_bsp (void) +{ + return NULL; +} + +#endif + +static int +a (void) +{ + long stack; + + if (verbose) + printf ("a: sp=%p bsp=%p\n", &stack, __builtin_ia64_bsp ()); + b (&&handler); + panic ("FAILURE: unexpected return from func()!\n"); + +#if UNW_TARGET_IA64 + asm volatile ("1:"); /* force a new bundle */ +#endif + handler: + if (verbose) + { + printf ("exception handler: here we go (sp=%p, bsp=%p)...\n", + &stack, __builtin_ia64_bsp ()); + /* This call works around a bug in gcc (up-to pre3.4) which + causes invalid assembly code to be generated when + __builtin_ia64_bsp() gets predicated. */ + getpid (); + } + return 0; +} + +static void +b (void *addr) +{ + if (verbose) + printf ("b() calling raise_exception()\n"); + raise_exception (addr); + panic ("FAILURE: b() returned from raise_exception()!!\n"); +} + +int +main (int argc, char **argv) +{ + if (argc > 1) + ++verbose; + + if (a () != 0 || nerrors > 0) + { + fprintf (stderr, "FAILURE: test failed; try again?\n"); + exit (-1); + } + + if (verbose) + printf ("SUCCESS!\n"); + return 0; +}