85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that: (1) source distributions retain this entire copyright
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* notice and comment, and (2) distributions including binaries display
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* the following acknowledgement: ``This product includes software
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* developed by the University of California, Berkeley and its contributors''
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* in the documentation or other materials provided with the distribution
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* and in all advertising materials mentioning features or use of this
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* software. Neither the name of the University nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include "gprof.h"
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#include "cg_arcs.h"
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#include "core.h"
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#include "hist.h"
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#include "symtab.h"
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void
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find_call (parent, p_lowpc, p_highpc)
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Sym *parent;
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bfd_vma p_lowpc;
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bfd_vma p_highpc;
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{
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bfd_vma dest_pc, delta;
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unsigned int *instr;
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Sym *child;
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delta = (bfd_vma) core_text_space - core_text_sect->vma;
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if (core_text_space == 0)
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{
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return;
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}
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if (p_lowpc < s_lowpc)
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{
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p_lowpc = s_lowpc;
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}
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if (p_highpc > s_highpc)
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{
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p_highpc = s_highpc;
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}
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DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
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parent->name, p_lowpc, p_highpc));
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for (instr = (unsigned int *) (((p_lowpc + delta) + 3) &~ 3);
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instr < (unsigned int *) (p_highpc + delta);
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++instr)
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{
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if ((*instr & CALL))
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{
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DBG (CALLDEBUG,
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printf ("[find_call] 0x%lx: callf", (bfd_vma) instr - delta));
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/*
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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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*/
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dest_pc = ((bfd_vma) (instr + (*instr & ~CALL))) - delta;
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if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
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{
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child = sym_lookup (&symtab, dest_pc);
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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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dest_pc, child->name, 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, 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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*/
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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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