3 Copyright 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
30 /* Initialize a symbol (so it's empty). */
33 DEFUN (sym_init, (sym), Sym * sym)
35 memset (sym, 0, sizeof (*sym));
37 /* It is not safe to assume that a binary zero corresponds
38 to a floating-point 0.0, so initialize floats explicitly. */
40 sym->cg.child_time = 0.0;
41 sym->cg.prop.fract = 0.0;
42 sym->cg.prop.self = 0.0;
43 sym->cg.prop.child = 0.0;
47 /* Compare the function entry-point of two symbols and return <0, =0,
48 or >0 depending on whether the left value is smaller than, equal
49 to, or greater than the right value. If two symbols are equal
50 but one has is_func set and the other doesn't, we make the
51 non-function symbol one "bigger" so that the function symbol will
52 survive duplicate removal. Finally, if both symbols have the
53 same is_func value, we discriminate against is_static such that
54 the global symbol survives. */
57 DEFUN (cmp_addr, (lp, rp), const PTR lp AND const PTR rp)
59 Sym *left = (Sym *) lp;
60 Sym *right = (Sym *) rp;
62 if (left->addr > right->addr)
64 else if (left->addr < right->addr)
67 if (left->is_func != right->is_func)
68 return right->is_func - left->is_func;
70 return left->is_static - right->is_static;
75 DEFUN (symtab_finalize, (tab), Sym_Table * tab)
83 /* Sort symbol table in order of increasing function addresses. */
84 qsort (tab->base, tab->len, sizeof (Sym), cmp_addr);
86 /* Remove duplicate entries to speed-up later processing and
87 set end_addr if its not set yet. */
88 prev_addr = tab->base[0].addr + 1;
90 for (src = dst = tab->base; src < tab->limit; ++src)
92 if (src->addr == prev_addr)
94 /* If same address, favor global symbol over static one,
95 then function over line number. If both symbols are
96 either static or global and either function or line, check
97 whether one has name beginning with underscore while
98 the other doesn't. In such cases, keep sym without
99 underscore. This takes cares of compiler generated
100 symbols (such as __gnu_compiled, __c89_used, etc.). */
101 if ((!src->is_static && dst[-1].is_static)
102 || ((src->is_static == dst[-1].is_static)
103 && ((src->is_func && !dst[-1].is_func)
104 || ((src->is_func == dst[-1].is_func)
105 && ((src->name[0] != '_' && dst[-1].name[0] == '_')
107 && src->name[1] != '_'
108 && dst[-1].name[1] == '_'))))))
110 DBG (AOUTDEBUG | IDDEBUG,
111 printf ("[symtab_finalize] favor %s@%c%c over %s@%c%c",
112 src->name, src->is_static ? 't' : 'T',
113 src->is_func ? 'F' : 'f',
114 dst[-1].name, dst[-1].is_static ? 't' : 'T',
115 dst[-1].is_func ? 'F' : 'f');
116 printf (" (addr=%lx)\n", (unsigned long) src->addr));
122 DBG (AOUTDEBUG | IDDEBUG,
123 printf ("[symtab_finalize] favor %s@%c%c over %s@%c%c",
124 dst[-1].name, dst[-1].is_static ? 't' : 'T',
125 dst[-1].is_func ? 'F' : 'f',
126 src->name, src->is_static ? 't' : 'T',
127 src->is_func ? 'F' : 'f');
128 printf (" (addr=%lx)\n", (unsigned long) src->addr));
133 if (dst > tab->base && dst[-1].end_addr == 0)
134 dst[-1].end_addr = src->addr - 1;
136 /* Retain sym only if it has a non-empty address range. */
137 if (!src->end_addr || src->addr <= src->end_addr)
141 prev_addr = src->addr;
146 if (tab->len > 0 && dst[-1].end_addr == 0)
147 dst[-1].end_addr = core_text_sect->vma + core_text_sect->_raw_size - 1;
149 DBG (AOUTDEBUG | IDDEBUG,
150 printf ("[symtab_finalize]: removed %d duplicate entries\n",
151 tab->len - (int) (dst - tab->base)));
154 tab->len = tab->limit - tab->base;
156 DBG (AOUTDEBUG | IDDEBUG,
159 for (j = 0; j < tab->len; ++j)
161 printf ("[symtab_finalize] 0x%lx-0x%lx\t%s\n",
162 (long) tab->base[j].addr, (long) tab->base[j].end_addr,
172 DEFUN (dbg_sym_lookup, (symtab, address), Sym_Table * symtab AND bfd_vma address)
177 fprintf (stderr, "[dbg_sym_lookup] address 0x%lx\n",
178 (unsigned long) address);
181 for (low = 0, high = symtab->len - 1; low != high;)
183 mid = (high + low) >> 1;
185 fprintf (stderr, "[dbg_sym_lookup] low=0x%lx, mid=0x%lx, high=0x%lx\n",
187 fprintf (stderr, "[dbg_sym_lookup] sym[m]=0x%lx sym[m + 1]=0x%lx\n",
188 (unsigned long) sym[mid].addr,
189 (unsigned long) sym[mid + 1].addr);
191 if (sym[mid].addr <= address && sym[mid + 1].addr > address)
194 if (sym[mid].addr > address)
200 fprintf (stderr, "[dbg_sym_lookup] binary search fails???\n");
208 /* Look up an address in the symbol-table that is sorted by address.
209 If address does not hit any symbol, 0 is returned. */
211 DEFUN (sym_lookup, (symtab, address), Sym_Table * symtab AND bfd_vma address)
224 for (low = 0, high = symtab->len - 1; low != high;)
226 DBG (LOOKUPDEBUG, ++probes);
227 mid = (high + low) / 2;
229 if (sym[mid].addr <= address && sym[mid + 1].addr > address)
231 if (address > sym[mid].end_addr)
233 /* Address falls into gap between
234 sym[mid] and sym[mid + 1]. */
240 printf ("[sym_lookup] %d probes (symtab->len=%u)\n",
241 probes, symtab->len - 1));
246 if (sym[mid].addr > address)
252 if (sym[mid + 1].addr <= address)
254 if (address > sym[mid + 1].end_addr)
256 /* Address is beyond end of sym[mid + 1]. */
261 DBG (LOOKUPDEBUG, printf ("[sym_lookup] %d (%u) probes, fall off\n",
262 probes, symtab->len - 1));
263 return &sym[mid + 1];