projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 252b5132 RH |
1 | /* |
| 2 | * Copyright (c) 1983 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms are permitted | |
| 6 | * provided that: (1) source distributions retain this entire copyright | |
| 7 | * notice and comment, and (2) distributions including binaries display | |
| 8 | * the following acknowledgement: ``This product includes software | |
| 9 | * developed by the University of California, Berkeley and its contributors'' | |
| 10 | * in the documentation or other materials provided with the distribution | |
| 11 | * and in all advertising materials mentioning features or use of this | |
| 12 | * software. Neither the name of the University nor the names of its | |
| 13 | * contributors may be used to endorse or promote products derived | |
| 14 | * from this software without specific prior written permission. | |
| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 17 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 18 | */ | |
| 19 | #include "gprof.h" | |
| 20 | #include "cg_arcs.h" | |
| 21 | #include "corefile.h" | |
| 22 | #include "hist.h" | |
| 23 | #include "symtab.h" | |
| 24 | ||
| 25 | ||
| 26 | int | |
| 27 | DEFUN (i386_iscall, (ip), unsigned char *ip) | |
| 28 | { | |
| 29 | if (*ip == 0xe8) | |
| 30 | return 1; | |
| 31 | return 0; | |
| 32 | } | |
| 33 | ||
| 34 | ||
| 35 | void | |
| 36 | i386_find_call (parent, p_lowpc, p_highpc) | |
| 37 | Sym *parent; | |
| 38 | bfd_vma p_lowpc; | |
| 39 | bfd_vma p_highpc; | |
| 40 | { | |
| 41 | unsigned char *instructp; | |
| 42 | Sym *child; | |
| 43 | bfd_vma destpc, delta; | |
| 44 | ||
| 45 | if (core_text_space == 0) | |
| 46 | { | |
| 47 | return; | |
| 48 | } | |
| 49 | if (p_lowpc < s_lowpc) | |
| 50 | { | |
| 51 | p_lowpc = s_lowpc; | |
| 52 | } | |
| 53 | if (p_highpc > s_highpc) | |
| 54 | { | |
| 55 | p_highpc = s_highpc; | |
| 56 | } | |
| 57 | DBG (CALLDEBUG, printf ("[findcall] %s: 0x%lx to 0x%lx\n", | |
| fdcf7d43 ILT |
58 | parent->name, (unsigned long) p_lowpc, |
| 59 | (unsigned long) p_highpc)); | |
| 252b5132 RH |
60 | |
| 61 | delta = (bfd_vma) core_text_space - core_text_sect->vma; | |
| 62 | ||
| 63 | for (instructp = (unsigned char *) (p_lowpc + delta); | |
| 64 | instructp < (unsigned char *) (p_highpc + delta); | |
| 65 | instructp ++) | |
| 66 | { | |
| 67 | if (i386_iscall (instructp)) | |
| 68 | { | |
| 69 | DBG (CALLDEBUG, | |
| 0e69fcbc ILT |
70 | printf ("[findcall]\t0x%lx:call", |
| 71 | (unsigned long) (instructp - (unsigned char *) delta))); | |
| 252b5132 RH |
72 | /* |
| 73 | * regular pc relative addressing | |
| 74 | * check that this is the address of | |
| 75 | * a function. | |
| 76 | */ | |
| 77 | ||
| 78 | destpc = ((bfd_vma) bfd_get_32 (core_bfd, instructp + 1) | |
| 79 | + (bfd_vma) instructp - (bfd_vma) delta + 5); | |
| 80 | if (destpc >= s_lowpc && destpc <= s_highpc) | |
| 81 | { | |
| 82 | child = sym_lookup (&symtab, destpc); | |
| 83 | if (child && child->addr == destpc) | |
| 84 | { | |
| 85 | /* | |
| 86 | * a hit | |
| 87 | */ | |
| 88 | DBG (CALLDEBUG, | |
| fdcf7d43 ILT |
89 | printf ("\tdestpc 0x%lx (%s)\n", |
| 90 | (unsigned long) destpc, child->name)); | |
| 252b5132 RH |
91 | arc_add (parent, child, (unsigned long) 0); |
| 92 | instructp += 4; /* call is a 5 byte instruction */ | |
| 93 | continue; | |
| 94 | } | |
| 95 | } | |
| 96 | /* | |
| 97 | * else: | |
| 98 | * it looked like a callf, but it: | |
| 99 | * a) wasn't actually a callf, or | |
| 100 | * b) didn't point to a known function in the symtab, or | |
| 101 | * c) something funny is going on. | |
| 102 | */ | |
| 103 | DBG (CALLDEBUG, printf ("\tbut it's a botch\n")); | |
| 104 | } | |
| 105 | } | |
| 106 | } |