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      1 /* system/debuggerd/utility.h
      2 **
      3 ** Copyright 2008, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #ifndef __utility_h
     19 #define __utility_h
     20 
     21 #include <stddef.h>
     22 #include <stdbool.h>
     23 
     24 #include "symbol_table.h"
     25 
     26 #ifndef PT_ARM_EXIDX
     27 #define PT_ARM_EXIDX    0x70000001      /* .ARM.exidx segment */
     28 #endif
     29 
     30 #define STACK_CONTENT_DEPTH 32
     31 
     32 typedef struct mapinfo {
     33     struct mapinfo *next;
     34     unsigned start;
     35     unsigned end;
     36     unsigned exidx_start;
     37     unsigned exidx_end;
     38     struct symbol_table *symbols;
     39     char name[];
     40 } mapinfo;
     41 
     42 /* Get a word from pid using ptrace. The result is the return value. */
     43 extern int get_remote_word(int pid, void *src);
     44 
     45 /* Handy routine to read aggregated data from pid using ptrace. The read
     46  * values are written to the dest locations directly.
     47  */
     48 extern void get_remote_struct(int pid, void *src, void *dst, size_t size);
     49 
     50 /* Find the containing map for the pc */
     51 const mapinfo *pc_to_mapinfo (mapinfo *mi, unsigned pc, unsigned *rel_pc);
     52 
     53 /* Map a pc address to the name of the containing ELF file */
     54 const char *map_to_name(mapinfo *mi, unsigned pc, const char* def);
     55 
     56 /* Log information onto the tombstone */
     57 extern void _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...);
     58 
     59 #define LOG(fmt...) _LOG(-1, 0, fmt)
     60 
     61 /* Set to 1 for normal debug traces */
     62 #if 0
     63 #define XLOG(fmt...) _LOG(-1, 0, fmt)
     64 #else
     65 #define XLOG(fmt...) do {} while(0)
     66 #endif
     67 
     68 /* Set to 1 for chatty debug traces. Includes all resolved dynamic symbols */
     69 #if 0
     70 #define XLOG2(fmt...) _LOG(-1, 0, fmt)
     71 #else
     72 #define XLOG2(fmt...) do {} while(0)
     73 #endif
     74 
     75 #endif
     76