| /* Gprof -c option support for AArch64. |
| Copyright 2013 Linaro Ltd. |
| |
| Based upon gprof/i386.c. |
| |
| Copyright (c) 1983, 1993, 2001 |
| The Regents of the University of California. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| |
| 1. Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| 2. Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| 3. Neither the name of the University nor the names of its contributors |
| may be used to endorse or promote products derived from this software |
| without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| SUCH DAMAGE. */ |
| |
| #include "gprof.h" |
| #include "search_list.h" |
| #include "source.h" |
| #include "symtab.h" |
| #include "cg_arcs.h" |
| #include "corefile.h" |
| #include "hist.h" |
| |
| #define BRANCH_MASK 0x7c000000 |
| #define BRANCH_PATTERN 0x14000000 |
| |
| void aarch64_find_call (Sym *, bfd_vma, bfd_vma); |
| |
| void |
| aarch64_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) |
| { |
| bfd_vma pc, dest_pc, offset; |
| unsigned int insn; |
| Sym *child; |
| |
| DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n", |
| parent->name, (unsigned long) p_lowpc, |
| (unsigned long) p_highpc)); |
| p_lowpc = (p_lowpc + 3) & ~3; |
| p_highpc &= ~3; |
| for (pc = p_lowpc; pc < p_highpc; pc += 4) |
| { |
| |
| insn = bfd_get_32 (core_bfd, ((unsigned char *) core_text_space |
| + pc - core_text_sect->vma)); |
| |
| if ((insn & BRANCH_MASK) == BRANCH_PATTERN) |
| { |
| DBG (CALLDEBUG, |
| printf ("[find_call] 0x%lx: bl", (unsigned long) pc)); |
| |
| /* Regular pc relative addressing check that this is the |
| address of a function. */ |
| offset = ((((bfd_vma) insn & 0x3ffffff) ^ 0x2000000) - 0x2000000) << 2; |
| |
| dest_pc = pc + offset; |
| |
| if (hist_check_address (dest_pc)) |
| { |
| child = sym_lookup (&symtab, dest_pc); |
| |
| if (child) |
| { |
| DBG (CALLDEBUG, |
| printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n", |
| (unsigned long) dest_pc, child->name, |
| (unsigned long) child->addr)); |
| |
| if (child->addr == dest_pc) |
| { |
| /* a hit. */ |
| arc_add (parent, child, (unsigned long) 0); |
| continue; |
| } |
| } |
| } |
| |
| /* Something funny going on. */ |
| DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); |
| } |
| } |
| } |