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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [gprof/] [i386.c] - Rev 304
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/* * 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" static int i386_iscall (unsigned char *); void i386_find_call (Sym *, bfd_vma, bfd_vma); static int i386_iscall (unsigned char *ip) { if (*ip == 0xe8) return 1; return 0; } void i386_find_call (Sym *parent, bfd_vma p_lowpc, bfd_vma p_highpc) { unsigned char *instructp; Sym *child; bfd_vma pc, destpc; DBG (CALLDEBUG, printf ("[findcall] %s: 0x%lx to 0x%lx\n", parent->name, (unsigned long) p_lowpc, (unsigned long) p_highpc)); for (pc = p_lowpc; pc < p_highpc; ++pc) { instructp = (unsigned char *) core_text_space + pc - core_text_sect->vma; if (i386_iscall (instructp)) { DBG (CALLDEBUG, printf ("[findcall]\t0x%lx:call", (unsigned long) pc)); /* * regular pc relative addressing * check that this is the address of * a function. */ destpc = bfd_get_32 (core_bfd, instructp + 1) + pc + 5; if (hist_check_address (destpc)) { child = sym_lookup (&symtab, destpc); if (child && child->addr == destpc) { /* * a hit */ DBG (CALLDEBUG, printf ("\tdestpc 0x%lx (%s)\n", (unsigned long) destpc, child->name)); arc_add (parent, child, (unsigned long) 0); instructp += 4; /* call is a 5 byte instruction */ continue; } } /* * else: * it looked like a callf, but it: * a) wasn't actually a callf, or * b) didn't point to a known function in the symtab, or * c) something funny is going on. */ DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); } } }
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