| 1 | /*
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| 2 | * Copyright (c) 1983 Regents of the University of California.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms are permitted
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| 6 | * provided that: (1) source distributions retain this entire copyright
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| 7 | * notice and comment, and (2) distributions including binaries display
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| 8 | * the following acknowledgement: ``This product includes software
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| 9 | * developed by the University of California, Berkeley and its contributors''
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| 10 | * in the documentation or other materials provided with the distribution
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| 11 | * and in all advertising materials mentioning features or use of this
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| 12 | * software. Neither the name of the University nor the names of its
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| 13 | * contributors may be used to endorse or promote products derived
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| 14 | * from this software without specific prior written permission.
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| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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| 16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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| 17 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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| 18 | */
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| 19 | #include "gprof.h"
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| 20 | #include "cg_arcs.h"
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| 21 | #include "corefile.h"
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| 22 | #include "hist.h"
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| 23 | #include "symtab.h"
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| 24 |
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| 25 | /*
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| 26 | * opcode of the `callf' instruction
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| 27 | */
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| 28 | #define CALL (0xc0000000)
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| 29 |
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| 30 | void
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| 31 | sparc_find_call (parent, p_lowpc, p_highpc)
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| 32 | Sym *parent;
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| 33 | bfd_vma p_lowpc;
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| 34 | bfd_vma p_highpc;
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| 35 | {
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| 36 | bfd_vma dest_pc, delta;
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| 37 | unsigned int *instr;
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| 38 | Sym *child;
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| 39 |
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| 40 | delta = (bfd_vma) core_text_space - core_text_sect->vma;
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| 41 |
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| 42 | if (core_text_space == 0)
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| 43 | {
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| 44 | return;
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| 45 | }
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| 46 | if (p_lowpc < s_lowpc)
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| 47 | {
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| 48 | p_lowpc = s_lowpc;
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| 49 | }
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| 50 | if (p_highpc > s_highpc)
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| 51 | {
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| 52 | p_highpc = s_highpc;
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| 53 | }
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| 54 | DBG (CALLDEBUG, printf ("[find_call] %s: 0x%lx to 0x%lx\n",
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| 55 | parent->name, (unsigned long) p_lowpc,
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| 56 | (unsigned long) p_highpc));
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| 57 | for (instr = (unsigned int *) (((p_lowpc + delta) + 3) &~ 3);
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| 58 | instr < (unsigned int *) (p_highpc + delta);
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| 59 | ++instr)
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| 60 | {
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| 61 | if ((*instr & CALL))
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| 62 | {
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| 63 | DBG (CALLDEBUG,
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| 64 | printf ("[find_call] 0x%lx: callf",
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| 65 | (unsigned long) instr - delta));
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| 66 | /*
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| 67 | * Regular pc relative addressing check that this is the
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| 68 | * address of a function.
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| 69 | */
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| 70 | dest_pc = ((bfd_vma) (instr + (*instr & ~CALL))) - delta;
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| 71 | if (dest_pc >= s_lowpc && dest_pc <= s_highpc)
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| 72 | {
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| 73 | child = sym_lookup (&symtab, dest_pc);
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| 74 | DBG (CALLDEBUG,
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| 75 | printf ("\tdest_pc=0x%lx, (name=%s, addr=0x%lx)\n",
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| 76 | (unsigned long) dest_pc, child->name,
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| 77 | (unsigned long) child->addr));
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| 78 | if (child->addr == dest_pc)
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| 79 | {
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| 80 | /* a hit: */
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| 81 | arc_add (parent, child, (unsigned long) 0);
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| 82 | continue;
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| 83 | }
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| 84 | }
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| 85 | /*
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| 86 | * Something funny going on.
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| 87 | */
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| 88 | DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
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| 89 | }
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| 90 | }
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| 91 | }
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