mirror of
https://github.com/mupen64plus/mupen64plus-oldsvn.git
synced 2025-04-02 10:52:35 -04:00
211 lines
7.1 KiB
C
211 lines
7.1 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Mupen64plus - decoder.h *
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* Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ *
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* Copyright (C) 2008 DarkJeztr HyperHacker *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include <SDL.h>
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#include <SDL_thread.h>
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#include "breakpoints.h"
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int g_NumBreakpoints=0;
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breakpoint g_Breakpoints[BREAKPOINTS_MAX_NUMBER];
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int add_breakpoint( uint32 address )
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{
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if( g_NumBreakpoints == BREAKPOINTS_MAX_NUMBER ) {
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printf("BREAKPOINTS_MAX_NUMBER have been reached.\n");//REMOVE ME
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return -1;
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}
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g_Breakpoints[g_NumBreakpoints].address=address;
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g_Breakpoints[g_NumBreakpoints].endaddr=address;
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BPT_SET_FLAG(g_Breakpoints[g_NumBreakpoints], BPT_FLAG_EXEC);
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enable_breakpoint(g_NumBreakpoints);
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return g_NumBreakpoints++;
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}
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int add_breakpoint_struct(breakpoint* newbp)
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{
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if( g_NumBreakpoints == BREAKPOINTS_MAX_NUMBER ) {
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printf("BREAKPOINTS_MAX_NUMBER have been reached.\n");//REMOVE ME
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return -1;
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}
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memcpy(&g_Breakpoints[g_NumBreakpoints], newbp, sizeof(breakpoint));
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if(BPT_CHECK_FLAG(g_Breakpoints[g_NumBreakpoints], BPT_FLAG_ENABLED))
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{
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BPT_CLEAR_FLAG(g_Breakpoints[g_NumBreakpoints], BPT_FLAG_ENABLED);
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enable_breakpoint( g_NumBreakpoints );
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}
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return g_NumBreakpoints++;
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}
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void enable_breakpoint( int bpt)
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{
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breakpoint *curBpt = g_Breakpoints + bpt;
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uint64 bptAddr;
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if(BPT_CHECK_FLAG((*curBpt), BPT_FLAG_READ)) {
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for(bptAddr = curBpt->address; bptAddr <= (curBpt->endaddr | 0xFFFF); bptAddr+=0x10000)
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if(lookup_breakpoint(bptAddr & 0xFFFF0000, 0xFFFF, BPT_FLAG_ENABLED | BPT_FLAG_READ) == -1)
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activate_memory_break_read(bptAddr);
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}
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if(BPT_CHECK_FLAG((*curBpt), BPT_FLAG_WRITE)) {
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for(bptAddr = curBpt->address; bptAddr <= (curBpt->endaddr | 0xFFFF); bptAddr+=0x10000)
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if(lookup_breakpoint(bptAddr & 0xFFFF0000, 0xFFFF, BPT_FLAG_ENABLED | BPT_FLAG_WRITE) == -1)
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activate_memory_break_write(bptAddr);
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}
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BPT_SET_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED);
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}
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void disable_breakpoint( int bpt )
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{
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breakpoint *curBpt = g_Breakpoints + bpt;
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uint64 bptAddr;
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BPT_CLEAR_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED);
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if(BPT_CHECK_FLAG((*curBpt), BPT_FLAG_READ)) {
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for(bptAddr = curBpt->address; bptAddr <= ((unsigned long)(curBpt->endaddr | 0xFFFF)); bptAddr+=0x10000)
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if(lookup_breakpoint(bptAddr & 0xFFFF0000, 0xFFFF, BPT_FLAG_ENABLED | BPT_FLAG_READ) == -1)
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deactivate_memory_break_read(bptAddr);
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}
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if(BPT_CHECK_FLAG((*curBpt), BPT_FLAG_WRITE)) {
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for(bptAddr = curBpt->address; bptAddr <= ((unsigned long)(curBpt->endaddr | 0xFFFF)); bptAddr+=0x10000)
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if(lookup_breakpoint(bptAddr & 0xFFFF0000, 0xFFFF, BPT_FLAG_ENABLED | BPT_FLAG_WRITE) == -1)
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deactivate_memory_break_write(bptAddr);
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}
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BPT_CLEAR_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED);
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}
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void remove_breakpoint_by_num( int bpt )
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{
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int curBpt;
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if(BPT_CHECK_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED))
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disable_breakpoint( bpt );
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for(curBpt=bpt+1; curBpt<g_NumBreakpoints; curBpt++)
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g_Breakpoints[curBpt-1]=g_Breakpoints[curBpt];
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g_NumBreakpoints--;
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}
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void remove_breakpoint_by_address( uint32 address )
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{
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int bpt = lookup_breakpoint( address, 0, 0 );
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if(bpt==-1)
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{
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printf("Tried to remove Nonexistant breakpoint %x!", address);
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}
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else
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remove_breakpoint_by_num( bpt );
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}
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void replace_breakpoint_num( int bpt, breakpoint* copyofnew )
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{
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if(BPT_CHECK_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED))
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disable_breakpoint( bpt );
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memcpy(&(g_Breakpoints[bpt]), copyofnew, sizeof(breakpoint));
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if(BPT_CHECK_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED))
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{
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BPT_CLEAR_FLAG(g_Breakpoints[bpt], BPT_FLAG_ENABLED);
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enable_breakpoint( bpt );
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}
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}
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int lookup_breakpoint( uint32 address, uint32 size, uint32 flags)
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{
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int i;
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uint64 endaddr = ((uint64)address) + ((uint64)size);
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for( i=0; i < g_NumBreakpoints; i++)
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{
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if((g_Breakpoints[i].flags & flags) == flags)
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{
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if(g_Breakpoints[i].endaddr < g_Breakpoints[i].address)
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{
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if((endaddr >= g_Breakpoints[i].address) ||
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(address <= g_Breakpoints[i].endaddr))
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return i;
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}
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else // endaddr >= address
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{
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if((endaddr >= g_Breakpoints[i].address) &&
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(address <= g_Breakpoints[i].endaddr))
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return i;
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}
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}
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}
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return -1;
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}
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int check_breakpoints( uint32 address )
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{
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return lookup_breakpoint( address, 0, BPT_FLAG_ENABLED | BPT_FLAG_EXEC );
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}
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int check_breakpoints_on_mem_access( uint32 pc, uint32 address, uint32 size, uint32 flags )
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{
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//This function handles memory read/write breakpoints. size specifies the address
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//range to check, flags specifies the flags that all need to be set.
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//It automatically stops and updates the debugger on hit, so the memory access
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//functions only need to call it and can discard the result.
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int i, bpt;
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if(run == 2)
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{
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bpt=lookup_breakpoint( address, size, flags );
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if(bpt != -1)
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{
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if(BPT_CHECK_FLAG(g_Breakpoints[bpt], BPT_FLAG_LOG))
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log_breakpoint(pc, flags, address);
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run = 0;
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update_debugger(pc);
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return bpt;
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}
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}
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return -1;
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}
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int log_breakpoint(uint32 PC, uint32 Flag, uint32 Access)
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{
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char msg[32];
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if(Flag & BPT_FLAG_READ) sprintf(msg, "0x%08X read 0x%08X", PC, Access);
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else if(Flag & BPT_FLAG_WRITE) sprintf(msg, "0x%08X wrote 0x%08X", PC, Access);
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else sprintf(msg, "0x%08X executed", PC);
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printf("BPT: %s\n", msg);
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//todo: log to file
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}
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