1 /* 2 * Copyright (c) 1983, 1993 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 /* 38 * opcode of the `callf' instruction 39 */ 40 #define CALL (0xc0000000) 41 42 void sparc_find_call (Sym *, bfd_vma, bfd_vma); 43 44 void 45 sparc_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) 46 { 47 bfd_vma pc, dest_pc; 48 unsigned int insn; 49 Sym *child; 50 51 DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n", 52 parent->name, (unsigned long) p_lowpc, 53 (unsigned long) p_highpc)); 54 for (pc = (p_lowpc + 3) & ~(bfd_vma) 3; pc < p_highpc; pc += 4) 55 { 56 insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space 57 + pc - core_text_sect->vma)); 58 if (insn & CALL) 59 { 60 DBG (CALLDEBUG, 61 printf ("[find_call] 0x%lx: callf", (unsigned long) pc)); 62 /* 63 * Regular pc relative addressing check that this is the 64 * address of a function. 65 */ 66 dest_pc = pc + (((bfd_signed_vma) (insn & 0x3fffffff) 67 ^ 0x20000000) - 0x20000000); 68 if (hist_check_address (dest_pc)) 69 { 70 child = sym_lookup (&symtab, dest_pc); 71 if (child) 72 { 73 DBG (CALLDEBUG, 74 printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n", 75 (unsigned long) dest_pc, child->name, 76 (unsigned long) child->addr)); 77 if (child->addr == dest_pc) 78 { 79 /* a hit: */ 80 arc_add (parent, child, (unsigned long) 0); 81 continue; 82 } 83 } 84 } 85 /* 86 * Something funny going on. 87 */ 88 DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); 89 } 90 } 91 } 92