/*
- * Copyright (c) 1983 Regents of the University of California.
+ * Copyright (c) 1983, 2001 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+#include "gprof.h"
+#include "search_list.h"
+#include "source.h"
+#include "symtab.h"
+#include "cg_arcs.h"
+#include "corefile.h"
+#include "hist.h"
-#ifndef lint
-static char sccsid[] = "@(#)tahoe.c 1.5 (Berkeley) 6/1/90";
-#endif /* not lint */
+static int i386_iscall PARAMS ((unsigned char *));
+void i386_find_call PARAMS ((Sym *, bfd_vma, bfd_vma));
-#include "gprof.h"
-
- /*
- * a namelist entry to be the child of indirect callf
- */
-nltype indirectchild = {
- "(*)" , /* the name */
- (unsigned long) 0 , /* the pc entry point */
- (unsigned long) 0 , /* entry point aligned to histogram */
- (double) 0.0 , /* ticks in this routine */
- (double) 0.0 , /* cumulative ticks in children */
- (long) 0 , /* how many times called */
- (long) 0 , /* how many calls to self */
- (double) 1.0 , /* propagation fraction */
- (double) 0.0 , /* self propagation time */
- (double) 0.0 , /* child propagation time */
- (bool) 0 , /* print flag */
- (int) 0 , /* index in the graph list */
- (int) 0 , /* graph call chain top-sort order */
- (int) 0 , /* internal number of cycle on */
- (struct nl *) &indirectchild , /* pointer to head of cycle */
- (struct nl *) 0 , /* pointer to next member of cycle */
- (arctype *) 0 , /* list of caller arcs */
- (arctype *) 0 /* list of callee arcs */
- };
-
-int
-iscall (unsigned char *ip) {
- if (*ip == 0xeb || *ip == 0x9a)
+static int
+i386_iscall (ip)
+ unsigned char *ip;
+{
+ if (*ip == 0xe8)
return 1;
return 0;
}
-findcall( parentp , p_lowpc , p_highpc )
- nltype *parentp;
- unsigned long p_lowpc;
- unsigned long p_highpc;
+
+void
+i386_find_call (parent, p_lowpc, p_highpc)
+ Sym *parent;
+ bfd_vma p_lowpc;
+ bfd_vma p_highpc;
{
- unsigned char *instructp;
- long length;
- nltype *childp;
- unsigned long destpc;
+ unsigned char *instructp;
+ Sym *child;
+ bfd_vma pc, destpc;
- if ( textspace == 0 ) {
- return;
+ if (core_text_space == 0)
+ {
+ return;
}
- if ( p_lowpc < s_lowpc ) {
- p_lowpc = s_lowpc;
+ if (p_lowpc < s_lowpc)
+ {
+ p_lowpc = s_lowpc;
}
- if ( p_highpc > s_highpc ) {
- p_highpc = s_highpc;
+ if (p_highpc > s_highpc)
+ {
+ p_highpc = s_highpc;
}
-# ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall] %s: 0x%x to 0x%x\n" ,
- parentp -> name , p_lowpc , p_highpc );
- }
-# endif DEBUG
- for ( instructp = textspace + p_lowpc ;
- instructp < textspace + p_highpc ;
- instructp += length ) {
- length = 1;
- if ( iscall (instructp) ) {
-# ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall]\t0x%x:callf" , instructp - textspace );
- }
-# endif DEBUG
- length = 4;
+ 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.
+ * regular pc relative addressing
+ * check that this is the address of
+ * a function.
*/
- destpc = ( (unsigned long)instructp + 5 - (unsigned long) textspace);
- if ( destpc >= s_lowpc && destpc <= s_highpc ) {
- childp = nllookup( destpc );
-# ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall]\tdestpc 0x%x" , destpc );
- printf( " childp->name %s" , childp -> name );
- printf( " childp->value 0x%x\n" ,
- childp -> value );
- }
-# endif DEBUG
- if ( childp -> value == destpc ) {
- /*
- * a hit
- */
- addarc( parentp , childp , (long) 0 );
- length += 4; /* constant lengths */
- continue;
+
+ destpc = bfd_get_32 (core_bfd, instructp + 1) + pc + 5;
+ if (destpc >= s_lowpc && destpc <= s_highpc)
+ {
+ 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;
+ }
}
- goto botched;
- }
- /*
- * else:
- * it looked like a callf,
- * but it wasn't to anywhere.
- */
- botched:
/*
- * something funny going on.
+ * 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.
*/
-# ifdef DEBUG
- if ( debug & CALLDEBUG ) {
- printf( "[findcall]\tbut it's a botch\n" );
- }
-# endif DEBUG
- length = 1;
- continue;
+ DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
}
- }
- }
+ }
+}
projects / binutils.git / blobdiff