1 /* Gprof -c option support for AArch64. 2 Copyright 2013 Linaro Ltd. 3 4 Based upon gprof/i386.c. 5 6 Copyright (c) 1983, 1993, 2001 7 The Regents of the University of California. All rights reserved. 8 9 Redistribution and use in source and binary forms, with or without 10 modification, are permitted provided that the following conditions 11 are met: 12 13 1. Redistributions of source code must retain the above copyright 14 notice, this list of conditions and the following disclaimer. 15 2. Redistributions in binary form must reproduce the above copyright 16 notice, this list of conditions and the following disclaimer in the 17 documentation and/or other materials provided with the distribution. 18 3. Neither the name of the University nor the names of its contributors 19 may be used to endorse or promote products derived from this software 20 without specific prior written permission. 21 22 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 SUCH DAMAGE. */ 33 34 #include "gprof.h" 35 #include "search_list.h" 36 #include "source.h" 37 #include "symtab.h" 38 #include "cg_arcs.h" 39 #include "corefile.h" 40 #include "hist.h" 41 42 #define BRANCH_MASK 0x7c000000 43 #define BRANCH_PATTERN 0x14000000 44 45 void aarch64_find_call (Sym *, bfd_vma, bfd_vma); 46 47 void 48 aarch64_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) 49 { 50 bfd_vma pc, dest_pc, offset; 51 unsigned int insn; 52 Sym *child; 53 54 DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n", 55 parent->name, (unsigned long) p_lowpc, 56 (unsigned long) p_highpc)); 57 58 for (pc = p_lowpc; pc < p_highpc; pc += 4) 59 { 60 61 insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space 62 + pc - core_text_sect->vma)); 63 64 if ((insn & BRANCH_MASK) == BRANCH_PATTERN) 65 { 66 DBG (CALLDEBUG, 67 printf ("[find_call] 0x%lx: bl", (unsigned long) pc)); 68 69 /* Regular pc relative addressing check that this is the 70 address of a function. */ 71 offset = ((((bfd_vma) insn & 0x3ffffff) ^ 0x2000000) - 0x2000000) << 2; 72 73 dest_pc = pc + offset; 74 75 if (hist_check_address (dest_pc)) 76 { 77 child = sym_lookup (&symtab, dest_pc); 78 79 if (child) 80 { 81 DBG (CALLDEBUG, 82 printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n", 83 (unsigned long) dest_pc, child->name, 84 (unsigned long) child->addr)); 85 86 if (child->addr == dest_pc) 87 { 88 /* a hit. */ 89 arc_add (parent, child, (unsigned long) 0); 90 continue; 91 } 92 } 93 } 94 95 /* Something funny going on. */ 96 DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); 97 } 98 } 99 } 100
