| 1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that: (1) source distributions retain this entire copyright |
| 7 | * notice and comment, and (2) distributions including binaries display |
| 8 | * the following acknowledgement: ``This product includes software |
| 9 | * developed by the University of California, Berkeley and its contributors'' |
| 10 | * in the documentation or other materials provided with the distribution |
| 11 | * and in all advertising materials mentioning features or use of this |
| 12 | * software. Neither the name of the University nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 17 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 18 | */ |
| 19 | #include "gprof.h" |
| 20 | #include "cg_arcs.h" |
| 21 | #include "core.h" |
| 22 | #include "hist.h" |
| 23 | #include "symtab.h" |
| 24 | |
| 25 | |
| 26 | void |
| 27 | find_call (parent, p_lowpc, p_highpc) |
| 28 | Sym *parent; |
| 29 | bfd_vma p_lowpc; |
| 30 | bfd_vma p_highpc; |
| 31 | { |
| 32 | bfd_vma dest_pc, delta; |
| 33 | unsigned int *instr; |
| 34 | Sym *child; |
| 35 | |
| 36 | delta = (bfd_vma) core_text_space - core_text_sect->vma; |
| 37 | |
| 38 | if (core_text_space == 0) |
| 39 | { |
| 40 | return; |
| 41 | } |
| 42 | if (p_lowpc < s_lowpc) |
| 43 | { |
| 44 | p_lowpc = s_lowpc; |
| 45 | } |
| 46 | if (p_highpc > s_highpc) |
| 47 | { |
| 48 | p_highpc = s_highpc; |
| 49 | } |
| 50 | DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n", |
| 51 | parent->name, p_lowpc, p_highpc)); |
| 52 | for (instr = (unsigned int *) (p_lowpc + delta); |
| 53 | instr < (unsigned int *) (p_highpc + delta); |
| 54 | ++instr) |
| 55 | { |
| 56 | if ((*instr & CALL)) |
| 57 | { |
| 58 | DBG (CALLDEBUG, |
| 59 | printf ("[find_call] 0x%lx: callf", (bfd_vma) instr - delta)); |
| 60 | /* |
| 61 | * Regular pc relative addressing check that this is the |
| 62 | * address of a function. |
| 63 | */ |
| 64 | dest_pc = ((bfd_vma) (instr + (*instr & ~CALL))) - delta; |
| 65 | if (dest_pc >= s_lowpc && dest_pc <= s_highpc) |
| 66 | { |
| 67 | child = sym_lookup (&symtab, dest_pc); |
| 68 | DBG (CALLDEBUG, |
| 69 | printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n", |
| 70 | dest_pc, child->name, child->addr)); |
| 71 | if (child->addr == dest_pc) |
| 72 | { |
| 73 | /* a hit: */ |
| 74 | arc_add (parent, child, 0); |
| 75 | continue; |
| 76 | } |
| 77 | } |
| 78 | /* |
| 79 | * Something funny going on. |
| 80 | */ |
| 81 | DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); |
| 82 | } |
| 83 | } |
| 84 | } |