| 1 | /*
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| 2 | * Copyright (c) 2014 Jiri Svoboda
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup taskdump
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <errno.h>
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| 36 | #include <fibril.h>
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| 37 | #include <fibrildump.h>
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| 38 | #include <stacktrace.h>
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| 39 | #include <stdio.h>
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| 40 | #include <stdbool.h>
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| 41 | #include <symtab.h>
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| 42 | #include <taskdump.h>
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| 43 | #include <udebug.h>
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| 44 |
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| 45 | static int fibrildump_read_uintptr(void *, uintptr_t, uintptr_t *);
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| 46 |
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| 47 | static stacktrace_ops_t fibrildump_st_ops = {
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| 48 | .read_uintptr = fibrildump_read_uintptr
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| 49 | };
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| 50 |
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| 51 | static int fibrildump_read_uintptr(void *arg, uintptr_t addr, uintptr_t *data)
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| 52 | {
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| 53 | async_sess_t *sess = (async_sess_t *)arg;
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| 54 |
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| 55 | return udebug_mem_read(sess, data, addr, sizeof(uintptr_t));
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| 56 | }
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| 57 |
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| 58 | static int read_link(async_sess_t *sess, uintptr_t addr, link_t *link)
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| 59 | {
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| 60 | int rc;
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| 61 |
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| 62 | rc = udebug_mem_read(sess, (void *)link, addr, sizeof(link_t));
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| 63 | return rc;
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| 64 | }
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| 65 |
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| 66 | static int read_fibril(async_sess_t *sess, uintptr_t addr, fibril_t *fibril)
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| 67 | {
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| 68 | int rc;
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| 69 |
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| 70 | rc = udebug_mem_read(sess, (void *)fibril, addr, sizeof(fibril_t));
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| 71 | return rc;
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| 72 | }
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| 73 |
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| 74 | int fibrils_dump(symtab_t *symtab, async_sess_t *sess)
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| 75 | {
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| 76 | uintptr_t fibril_list_addr;
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| 77 | link_t link;
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| 78 | fibril_t fibril;
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| 79 | uintptr_t addr, fibril_addr;
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| 80 | uintptr_t pc, fp;
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| 81 | int rc;
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| 82 |
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| 83 | rc = symtab_name_to_addr(symtab, "fibril_list", &fibril_list_addr);
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| 84 | if (rc != EOK)
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| 85 | return EIO;
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| 86 |
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| 87 | addr = fibril_list_addr;
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| 88 | while (true) {
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| 89 | rc = read_link(sess, addr, &link);
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| 90 | if (rc != EOK)
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| 91 | return EIO;
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| 92 |
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| 93 | addr = (uintptr_t) link.next;
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| 94 | if (addr == fibril_list_addr)
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| 95 | break;
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| 96 |
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| 97 | fibril_addr = (uintptr_t) list_get_instance((void *)addr,
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| 98 | fibril_t, all_link);
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| 99 | printf("Fibril %p:\n", (void *) fibril_addr);
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| 100 | rc = read_fibril(sess, fibril_addr, &fibril);
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| 101 | if (rc != EOK)
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| 102 | return EIO;
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| 103 |
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| 104 | pc = fibril.ctx.pc;
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| 105 | fp = context_get_fp(&fibril.ctx);
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| 106 | if (0) stacktrace_print_generic(&fibrildump_st_ops, sess,
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| 107 | fp, pc);
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| 108 | td_stacktrace(fp, pc);
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| 109 | }
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| 110 |
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| 111 | return EOK;
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| 112 | }
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| 113 |
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| 114 | /** @}
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| 115 | */
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