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