/**

  * $Id: debug_win.c,v 1.21 2007-10-03 09:32:09 nkeynes Exp $

  * This file is responsible for the main debugger gui frame.

  *

  * Copyright (c) 2005 Nathan Keynes.

  *

  * This program is free software; you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation; either version 2 of the License, or

  * (at your option) any later version.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  */

 #include <stdlib.h>

 #include <stdarg.h>

 #include <stdio.h>

 #include <gnome.h>

 #include <math.h>

 #include "sh4/sh4dasm.h"

 #include "gui/gui.h"

 #include "mem.h"

 #include "cpu.h"

 #include "display.h"

 GdkColor *msg_colors[] = { &clrError, &clrError, &clrWarn, &clrNormal,

                            &clrDebug, &clrTrace };

 char *msg_levels[] = { "FATAL", "ERROR", "WARN", "INFO", "DEBUG", "TRACE" };

 int global_msg_level = EMIT_WARN;

 void init_register_list( debug_info_t data );

 struct debug_info_struct {

     int disasm_from;

     int disasm_to;

     int disasm_pc;

     struct cpu_desc_struct *cpu;

     const cpu_desc_t *cpu_list;

     GtkCList *msgs_list;

     GtkCList *regs_list;

     GtkCList *disasm_list;

     GtkEntry *page_field;

     GtkWidget *win;

     GtkProgressBar *icounter;

     char icounter_text[16];

     char saved_regs[0];

 };

 debug_info_t init_debug_win(GtkWidget *win, const cpu_desc_t *cpu_list )

 {

     GnomeAppBar *appbar;

     debug_info_t data = g_malloc0( sizeof(struct debug_info_struct) + cpu_list[0]->regs_size );

     data->disasm_from = -1;

     data->disasm_to = -1;

     data->disasm_pc = -1;

     data->cpu = cpu_list[0];

     data->cpu_list = cpu_list;

     data->regs_list= gtk_object_get_data(GTK_OBJECT(win), "reg_list");

     data->win = win;

     gtk_widget_modify_font( GTK_WIDGET(data->regs_list), fixed_list_font );

     init_register_list( data );

     data->msgs_list = gtk_object_get_data(GTK_OBJECT(win), "output_list");

     data->disasm_list = gtk_object_get_data(GTK_OBJECT(win), "disasm_list");

     gtk_clist_set_column_width( data->disasm_list, 1, 16 );

     data->page_field = gtk_object_get_data(GTK_OBJECT(win), "page_field");

     appbar = gtk_object_get_data(GTK_OBJECT(win), "debug_appbar");

     data->icounter = gnome_appbar_get_progress( appbar );

     gtk_progress_bar_set_text(data->icounter, "1");

     gtk_object_set_data( GTK_OBJECT(win), "debug_data", data );

     set_disassembly_pc( data, *data->cpu->pc, FALSE );

     debug_win_set_running( data, FALSE );

     return data;

 }

 void init_register_list( debug_info_t data ) 

 {

     int i;

     char buf[20];

     char *arr[2];

     gtk_clist_clear( data->regs_list );

     arr[1] = buf;

     for( i=0; data->cpu->regs_info[i].name != NULL; i++ ) {

         arr[0] = data->cpu->regs_info[i].name;

         if( data->cpu->regs_info->type == REG_INT )

             sprintf( buf, "%08X", *((uint32_t *)data->cpu->regs_info[i].value) );

         else

             sprintf( buf, "%f", *((float *)data->cpu->regs_info[i].value) );

         gtk_clist_append( data->regs_list, arr );

     }

 }

 /*

  * Check for changed registers and update the display

  */

 void update_registers( debug_info_t data )

 {

     int i;

     for( i=0; data->cpu->regs_info[i].name != NULL; i++ ) {

         if( data->cpu->regs_info[i].type == REG_INT ) {

             /* Yes this _is_ probably fairly evil */

             if( *((uint32_t *)data->cpu->regs_info[i].value) !=

                 *((uint32_t *)((char *)data->saved_regs + ((char *)data->cpu->regs_info[i].value - (char *)data->cpu->regs))) ) {

                 char buf[20];

                 sprintf( buf, "%08X", *((uint32_t *)data->cpu->regs_info[i].value) );

                 gtk_clist_set_text( data->regs_list, i, 1, buf );

                 gtk_clist_set_foreground( data->regs_list, i, &clrChanged );

             } else {

                 gtk_clist_set_foreground( data->regs_list, i, &clrNormal );

             }

         } else {

             if( *((float *)data->cpu->regs_info[i].value) !=

                 *((float *)((char *)data->saved_regs + ((char *)data->cpu->regs_info[i].value - (char *)data->cpu->regs))) ) {

                 char buf[20];

                 sprintf( buf, "%f", *((float *)data->cpu->regs_info[i].value) );

                 gtk_clist_set_text( data->regs_list, i, 1, buf );

                 gtk_clist_set_foreground( data->regs_list, i, &clrChanged );

             } else {

                 gtk_clist_set_foreground( data->regs_list, i, &clrNormal );

             }

         }

     }

     set_disassembly_pc( data, *data->cpu->pc, FALSE );

     memcpy( data->saved_regs, data->cpu->regs, data->cpu->regs_size );

 }

 void update_icount( debug_info_t data )

 {

     if( data != NULL ) {

 	//    sprintf( data->icounter_text, "%d", *data->cpu->icount );

 	sprintf( data->icounter_text, "%d", pvr2_get_frame_count() );

 	gtk_progress_bar_set_text( data->icounter, data->icounter_text );

     }

 }

 void set_disassembly_region( debug_info_t data, unsigned int page )

 {

     uint32_t i, posn, next;

     char buf[80];

     char addr[10];

     char opcode[16] = "";

     char *arr[4] = { addr, " ", opcode, buf };

     unsigned int from = page & 0xFFFFF000;

     unsigned int to = from + 4096;

     gtk_clist_clear(data->disasm_list);

     sprintf( addr, "%08X", from );

     gtk_entry_set_text( data->page_field, addr );

     if( !data->cpu->is_valid_page_func( from ) ) {

         arr[3] = "This page is currently unmapped";

         gtk_clist_append( data->disasm_list, arr );

         gtk_clist_set_foreground( data->disasm_list, 0, &clrError );

     } else {

         for( i=from; i<to; i = next ) {

 	    next = data->cpu->disasm_func( i, buf, sizeof(buf), opcode );

             sprintf( addr, "%08X", i );

             posn = gtk_clist_append( data->disasm_list, arr );

             if( buf[0] == '?' )

                 gtk_clist_set_foreground( data->disasm_list, posn, &clrWarn );

 	    if( data->cpu->get_breakpoint != NULL ) {

 		int type = data->cpu->get_breakpoint( i );

 		switch(type) {

 		case BREAK_ONESHOT:

 		    gtk_clist_set_background( data->disasm_list, posn, &clrTempBreak );

 		    break;

 		case BREAK_KEEP:

 		    gtk_clist_set_background( data->disasm_list, posn, &clrBreak );

 		    break;

 		}

 	    }

         }

         if( data->disasm_pc != -1 && data->disasm_pc >= from && data->disasm_pc < to )

             gtk_clist_set_foreground( data->disasm_list, address_to_row(data, data->disasm_pc),

                                       &clrPC );

     }

     if( page != from ) { /* not a page boundary */

         gtk_clist_moveto( data->disasm_list, (page-from)>>1, 0, 0.5, 0.0 );

     }

     data->disasm_from = from;

     data->disasm_to = to;

 }

 void jump_to_disassembly( debug_info_t data, unsigned int addr, gboolean select )

 {

     int row;

     if( addr < data->disasm_from || addr >= data->disasm_to )

         set_disassembly_region(data,addr);

     row = address_to_row( data, addr );

     if(select) {

         gtk_clist_select_row( data->disasm_list, row, 0 );

     }

     if( gtk_clist_row_is_visible( data->disasm_list, row ) != GTK_VISIBILITY_FULL ){

         gtk_clist_moveto( data->disasm_list, row, 0, 0.5, 0.0 );

     }

 }

 void jump_to_pc( debug_info_t data, gboolean select )

 {

     jump_to_disassembly( data, *data->cpu->pc, select );

 }

 void set_disassembly_pc( debug_info_t data, unsigned int pc, gboolean select )

 {

     int row;

     jump_to_disassembly( data, pc, select );

     if( data->disasm_pc != -1 && data->disasm_pc >= data->disasm_from && 

 	data->disasm_pc < data->disasm_to )

         gtk_clist_set_foreground( data->disasm_list, 

 				  (data->disasm_pc - data->disasm_from) / data->cpu->instr_size,

                                   &clrNormal );

     row = address_to_row( data, pc );

     gtk_clist_set_foreground( data->disasm_list, row, &clrPC );

     data->disasm_pc = pc;

 }

 void set_disassembly_cpu( debug_info_t data, const gchar *cpu )

 {

     int i;

     for( i=0; data->cpu_list[i] != NULL; i++ ) {

 	if( strcmp( data->cpu_list[i]->name, cpu ) == 0 ) {

 	    if( data->cpu != data->cpu_list[i] ) {

 		data->cpu = data->cpu_list[i];

 		data->disasm_from = data->disasm_to = -1; /* Force reload */

 		set_disassembly_pc( data, *data->cpu->pc, FALSE );

 		init_register_list( data );

 		update_icount( data );

 	    }

 	    return;

 	}

     }

 }

 void debug_win_toggle_breakpoint( debug_info_t data, int row )

 {

     uint32_t pc = row_to_address( data, row );

     int oldType = data->cpu->get_breakpoint( pc );

     if( oldType != BREAK_NONE ) {

 	data->cpu->clear_breakpoint( pc, oldType );

 	gtk_clist_set_background( data->disasm_list, row, &clrWhite );

     } else {

 	data->cpu->set_breakpoint( pc, BREAK_KEEP );

 	gtk_clist_set_background( data->disasm_list, row, &clrBreak );

     }

 }

 void debug_win_set_oneshot_breakpoint( debug_info_t data, int row )

 {

     uint32_t pc = row_to_address( data, row );

     data->cpu->clear_breakpoint( pc, BREAK_ONESHOT );

     data->cpu->set_breakpoint( pc, BREAK_ONESHOT );

     gtk_clist_set_background( data->disasm_list, row, &clrTempBreak );

 }

 /**

  * Execute a single instruction using the current CPU mode.

  */

 void debug_win_single_step( debug_info_t data )

 {

     data->cpu->step_func();

     gtk_gui_update();

 }

 uint32_t row_to_address( debug_info_t data, int row ) {

     return data->cpu->instr_size * row + data->disasm_from;

 }

 int address_to_row( debug_info_t data, uint32_t address ) {

     if( data->disasm_from > address || data->disasm_to <= address )

 	return -1;

     return (address - data->disasm_from) / data->cpu->instr_size;

 }

 void emit( void *ptr, int level, const gchar *source, const char *msg, ... )

 {

     char buf[20], addr[10] = "", *p;

     const char *arr[4] = {buf, source, addr};

     int posn;

     time_t tm = time(NULL);

     va_list ap;

     debug_info_t data;

     if( ptr == NULL )

 	data = main_debug;

     else data = (debug_info_t)ptr;

     if( level > global_msg_level ) {

 	return; // ignored

     }

     va_start(ap, msg);

     strftime( buf, sizeof(buf), "%H:%M:%S", localtime(&tm) );

     if( data == NULL ) {

 	fprintf( stderr, "%s %08X %-5s ", buf, *sh4_cpu_desc.pc, msg_levels[level] );

 	vfprintf( stderr, msg, ap );

 	fprintf( stderr, "\n" );

 	va_end(ap);

 	return;

     }

     p = g_strdup_vprintf( msg, ap );

     sprintf( addr, "%08X", *data->cpu->pc );

     arr[3] = p;

     posn = gtk_clist_append(data->msgs_list, arr);

     free(p);

     va_end(ap);

     gtk_clist_set_foreground( data->msgs_list, posn, msg_colors[level] );

     gtk_clist_moveto( data->msgs_list, posn, 0, 1.0, 0.0 );

     /* emit _really_ slows down the emu, to the point where the gui can be

      * completely unresponsive if I don't include this:

      */

     while( gtk_events_pending() )

         gtk_main_iteration();

 }

 debug_info_t get_debug_info( GtkWidget *widget ) {

     GtkWidget *win = gtk_widget_get_toplevel(widget);

     debug_info_t data = (debug_info_t)gtk_object_get_data( GTK_OBJECT(win), "debug_data" );

     return data;

 }

 void debug_win_enable_widget( debug_info_t data, const char *name, 

 			      gboolean enabled )

 {

     GtkWidget *widget = GTK_WIDGET(gtk_object_get_data(GTK_OBJECT(data->win), name));

     gtk_widget_set_sensitive( widget, enabled );

 }    

 void debug_win_set_running( debug_info_t data, gboolean isRunning ) 

 {

     if( data != NULL ) {

 	debug_win_enable_widget( data, "stop_btn", isRunning );

 	debug_win_enable_widget( data, "step_btn", !isRunning );

 	debug_win_enable_widget( data, "run_btn", !isRunning );

 	debug_win_enable_widget( data, "runto_btn", !isRunning );

     }

 }