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 PARAMS ((Sym *, bfd_vma, bfd_vma)); 43 44 void 45 sparc_find_call (parent, p_lowpc, p_highpc) 46 Sym *parent; 47 bfd_vma p_lowpc; 48 bfd_vma p_highpc; 49 { 50 bfd_vma pc, dest_pc; 51 unsigned int insn; 52 Sym *child; 53 54 if (core_text_space == 0) 55 { 56 return; 57 } 58 if (p_lowpc < s_lowpc) 59 { 60 p_lowpc = s_lowpc; 61 } 62 if (p_highpc > s_highpc) 63 { 64 p_highpc = s_highpc; 65 } 66 DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n", 67 parent->name, (unsigned long) p_lowpc, 68 (unsigned long) p_highpc)); 69 for (pc = (p_lowpc + 3) & ~(bfd_vma) 3; pc < p_highpc; pc += 4) 70 { 71 insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space 72 + pc - core_text_sect->vma)); 73 if (insn & CALL) 74 { 75 DBG (CALLDEBUG, 76 printf ("[find_call] 0x%lx: callf", (unsigned long) pc)); 77 /* 78 * Regular pc relative addressing check that this is the 79 * address of a function. 80 */ 81 dest_pc = pc + (((bfd_signed_vma) (insn & 0x3fffffff) 82 ^ 0x20000000) - 0x20000000); 83 if (dest_pc >= s_lowpc && dest_pc <= s_highpc) 84 { 85 child = sym_lookup (&symtab, dest_pc); 86 DBG (CALLDEBUG, 87 printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n", 88 (unsigned long) dest_pc, child->name, 89 (unsigned long) child->addr)); 90 if (child->addr == dest_pc) 91 { 92 /* a hit: */ 93 arc_add (parent, child, (unsigned long) 0); 94 continue; 95 } 96 } 97 /* 98 * Something funny going on. 99 */ 100 DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); 101 } 102 } 103 } 104