| 1 | /* |
| 2 | * Copyright (c) 1983, 1993, 1998 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. Neither the name of the University nor the names of its contributors |
| 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | #include "gprof.h" |
| 30 | #include "search_list.h" |
| 31 | #include "source.h" |
| 32 | #include "symtab.h" |
| 33 | #include "cg_arcs.h" |
| 34 | #include "corefile.h" |
| 35 | #include "hist.h" |
| 36 | |
| 37 | static Sym indirect_child; |
| 38 | |
| 39 | void mips_find_call (Sym *, bfd_vma, bfd_vma); |
| 40 | |
| 41 | void |
| 42 | mips_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
| 43 | { |
| 44 | bfd_vma pc, dest_pc; |
| 45 | unsigned int op; |
| 46 | int offset; |
| 47 | Sym *child; |
| 48 | static bfd_boolean inited = FALSE; |
| 49 | |
| 50 | if (!inited) |
| 51 | { |
| 52 | inited = TRUE; |
| 53 | sym_init (&indirect_child); |
| 54 | indirect_child.name = _("<indirect child>"); |
| 55 | indirect_child.cg.prop.fract = 1.0; |
| 56 | indirect_child.cg.cyc.head = &indirect_child; |
| 57 | } |
| 58 | |
| 59 | DBG (CALLDEBUG, printf (_("[find_call] %s: 0x%lx to 0x%lx\n"), |
| 60 | parent->name, (unsigned long) p_lowpc, |
| 61 | (unsigned long) p_highpc)); |
| 62 | for (pc = p_lowpc; pc < p_highpc; pc += 4) |
| 63 | { |
| 64 | op = bfd_get_32 (core_bfd, ((unsigned char *)core_text_space |
| 65 | + pc - core_text_sect->vma)); |
| 66 | if ((op & 0xfc000000) == 0x0c000000) |
| 67 | { |
| 68 | /* This is a "jal" instruction. Check that the destination |
| 69 | is the address of a function. */ |
| 70 | DBG (CALLDEBUG, |
| 71 | printf (_("[find_call] 0x%lx: jal"), (unsigned long) pc)); |
| 72 | offset = (op & 0x03ffffff) << 2; |
| 73 | dest_pc = (pc & ~(bfd_vma) 0xfffffff) | offset; |
| 74 | if (hist_check_address (dest_pc)) |
| 75 | { |
| 76 | child = sym_lookup (&symtab, dest_pc); |
| 77 | if (child) |
| 78 | { |
| 79 | DBG (CALLDEBUG, |
| 80 | printf (" 0x%lx\t; name=%s, addr=0x%lx", |
| 81 | (unsigned long) dest_pc, child->name, |
| 82 | (unsigned long) child->addr)); |
| 83 | if (child->addr == dest_pc) |
| 84 | { |
| 85 | DBG (CALLDEBUG, printf ("\n")); |
| 86 | /* a hit: */ |
| 87 | arc_add (parent, child, (unsigned long) 0); |
| 88 | continue; |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | /* Something funny going on. */ |
| 93 | DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); |
| 94 | } |
| 95 | else if ((op & 0xfc00f83f) == 0x0000f809) |
| 96 | { |
| 97 | /* This is a "jalr" instruction (indirect call). */ |
| 98 | DBG (CALLDEBUG, |
| 99 | printf (_("[find_call] 0x%lx: jalr\n"), (unsigned long) pc)); |
| 100 | arc_add (parent, &indirect_child, (unsigned long) 0); |
| 101 | } |
| 102 | } |
| 103 | } |