| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus - debugger.c * |
| 3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
| 4 | * Copyright (C) 2008 DarkJeztr * |
| 5 | * Copyright (C) 2002 davFr * |
| 6 | * * |
| 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. * |
| 11 | * * |
| 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. * |
| 16 | * * |
| 17 | * You should have received a copy of the GNU General Public License * |
| 18 | * along with this program; if not, write to the * |
| 19 | * Free Software Foundation, Inc., * |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 21 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 22 | |
| 23 | #include <SDL.h> |
| 24 | |
| 25 | #include "api/debugger.h" |
| 26 | |
| 27 | #include "dbg_types.h" |
| 28 | #include "debugger.h" |
| 29 | #include "dbg_breakpoints.h" |
| 30 | #include "dbg_memory.h" |
| 31 | |
| 32 | // State of the Emulation Thread: |
| 33 | // 0 -> pause, 2 -> run. |
| 34 | |
| 35 | int g_DebuggerActive = 0; // whether the debugger is enabled or not |
| 36 | int run; |
| 37 | |
| 38 | static SDL_cond *debugger_done_cond; |
| 39 | static SDL_mutex *mutex; |
| 40 | |
| 41 | uint32 previousPC; |
| 42 | |
| 43 | //]=-=-=-=-=-=-=-=-=-=-=[ Initialisation du Debugger ]=-=-=-=-=-=-=-=-=-=-=-=[ |
| 44 | |
| 45 | void init_debugger() |
| 46 | { |
| 47 | g_DebuggerActive = 1; |
| 48 | run = 0; |
| 49 | |
| 50 | DebuggerCallback(DEBUG_UI_INIT, 0); /* call front-end to initialize user interface */ |
| 51 | |
| 52 | init_host_disassembler(); |
| 53 | |
| 54 | mutex = SDL_CreateMutex(); |
| 55 | debugger_done_cond = SDL_CreateCond(); |
| 56 | } |
| 57 | |
| 58 | void destroy_debugger() |
| 59 | { |
| 60 | SDL_DestroyMutex(mutex); |
| 61 | mutex = NULL; |
| 62 | SDL_DestroyCond(debugger_done_cond); |
| 63 | debugger_done_cond = NULL; |
| 64 | g_DebuggerActive = 0; |
| 65 | } |
| 66 | |
| 67 | //]=-=-=-=-=-=-=-=-=-=-=-=-=[ Mise-a-Jour Debugger ]=-=-=-=-=-=-=-=-=-=-=-=-=[ |
| 68 | |
| 69 | void update_debugger(uint32 pc) |
| 70 | // Update debugger state and display. |
| 71 | // Should be called after each R4300 instruction |
| 72 | // Checks for breakpoint hits on PC |
| 73 | { |
| 74 | int bpt; |
| 75 | |
| 76 | if(run!=0) {//check if we hit a breakpoint |
| 77 | bpt = check_breakpoints(pc); |
| 78 | if( bpt!=-1 ) { |
| 79 | run = 0; |
| 80 | |
| 81 | if(BPT_CHECK_FLAG(g_Breakpoints[bpt], BPT_FLAG_LOG)) |
| 82 | log_breakpoint(pc, BPT_FLAG_EXEC, 0); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | if(run!=2) { |
| 87 | DebuggerCallback(DEBUG_UI_UPDATE, pc); /* call front-end to notify user interface to update */ |
| 88 | } |
| 89 | if(run==0) { |
| 90 | // Emulation thread is blocked until a button is clicked. |
| 91 | SDL_mutexP(mutex); |
| 92 | SDL_CondWait(debugger_done_cond, mutex); |
| 93 | SDL_mutexV(mutex); |
| 94 | } |
| 95 | |
| 96 | previousPC = pc; |
| 97 | } |
| 98 | |
| 99 | void debugger_step() |
| 100 | { |
| 101 | SDL_CondSignal(debugger_done_cond); |
| 102 | } |
| 103 | |
| 104 | |