| 1 | /*
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| 2 | * Copyright (c) 2009 Jakub Jermar
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| 3 | * Copyright (c) 2010 Jiri Svoboda
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @addtogroup libc
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| 31 | * @{
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| 32 | */
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| 33 | /** @file
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| 34 | */
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| 35 |
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| 36 | #include <stacktrace.h>
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| 37 | #include <stdio.h>
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| 38 | #include <sys/types.h>
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| 39 | #include <errno.h>
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| 40 | #include <unistd.h>
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| 41 |
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| 42 | static int stacktrace_read_uintptr(void *arg, uintptr_t addr, uintptr_t *data);
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| 43 |
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| 44 | void stacktrace_print_fp_pc(uintptr_t fp, uintptr_t pc)
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| 45 | {
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| 46 | stacktrace_t st;
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| 47 | uintptr_t nfp;
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| 48 |
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| 49 | st.op_arg = NULL;
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| 50 | st.read_uintptr = stacktrace_read_uintptr;
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| 51 |
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| 52 | while (stacktrace_fp_valid(&st, fp)) {
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| 53 | printf("%p: %p()\n", (void *) fp, (void *) pc);
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| 54 | (void) stacktrace_ra_get(&st, fp, &pc);
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| 55 | (void) stacktrace_fp_prev(&st, fp, &nfp);
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| 56 | fp = nfp;
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | void stacktrace_print(void)
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| 61 | {
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| 62 | stacktrace_prepare();
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| 63 | stacktrace_print_fp_pc(stacktrace_fp_get(), stacktrace_pc_get());
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| 64 |
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| 65 | /*
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| 66 | * Prevent the tail call optimization of the previous call by
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| 67 | * making it a non-tail call.
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| 68 | */
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| 69 |
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| 70 | printf("-- end of stack trace --\n");
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| 71 | }
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| 72 |
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| 73 | static int stacktrace_read_uintptr(void *arg, uintptr_t addr, uintptr_t *data)
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| 74 | {
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| 75 | (void) arg;
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| 76 | *data = *((uintptr_t *) addr);
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| 77 | return EOK;
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| 78 | }
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| 79 |
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| 80 | /** @}
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| 81 | */
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