Sweden-Number/programs/winedbg/display.c

199 lines
5.4 KiB
C

/*
* File display.c - display handling for Wine internal debugger.
*
* Copyright (C) 1997, Eric Youngdale.
* Copyright (C) 2003, Michal Miroslaw
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include "debugger.h"
#include <stdarg.h>
#define DISPTAB_DELTA 8 /* needs to be power of 2, search for MARK to see why :) */
struct display {
struct expr *exp;
int count;
char format;
char enabled;
struct name_hash *function_name;
};
static struct display *displaypoints = NULL;
static unsigned int maxdisplays = 0, ndisplays = 0;
static struct name_hash *DEBUG_GetCurrentFrameFunctionName(void)
{
struct name_hash *name;
unsigned int eip, ebp;
if (DEBUG_GetCurrentFrame(&name, &eip, &ebp))
return name;
return NULL;
}
int DEBUG_AddDisplay(struct expr *exp, int count, char format, int in_frame)
{
int i;
for (i = 0; i < ndisplays; i++)
if (displaypoints[i].exp == NULL)
break;
if (i == maxdisplays) /* no space left - expand */
displaypoints = DBG_realloc(displaypoints,
(maxdisplays += DISPTAB_DELTA) * sizeof(*displaypoints));
if (i == ndisplays)
++ndisplays;
displaypoints[i].exp = DEBUG_CloneExpr(exp);
displaypoints[i].count = count;
displaypoints[i].format = format;
displaypoints[i].enabled = TRUE;
displaypoints[i].function_name =
(in_frame ? DEBUG_GetCurrentFrameFunctionName() : NULL);
return TRUE;
}
int DEBUG_InfoDisplay(void)
{
int i;
for (i = 0; i < ndisplays; i++) {
if (displaypoints[i].exp == NULL)
continue;
if (displaypoints[i].function_name)
DEBUG_Printf(DBG_CHN_MESG, "%d in %s%s : ", i + 1,
DEBUG_GetSymbolName(displaypoints[i].function_name),
(displaypoints[i].enabled ?
(displaypoints[i].function_name != DEBUG_GetCurrentFrameFunctionName() ?
" (out of scope)" : "")
: " (disabled)")
);
else
DEBUG_Printf(DBG_CHN_MESG, "%d%s : ", i + 1,
(displaypoints[i].enabled ? "" : " (disabled)"));
DEBUG_DisplayExpr(displaypoints[i].exp);
DEBUG_Printf(DBG_CHN_MESG, "\n");
}
return TRUE;
}
void DEBUG_PrintOneDisplay(int i)
{
DBG_VALUE value;
if (displaypoints[i].enabled) {
value = DEBUG_EvalExpr(displaypoints[i].exp);
if (value.type == NULL) {
DEBUG_Printf(DBG_CHN_MESG, "Unable to evaluate expression ");
DEBUG_DisplayExpr(displaypoints[i].exp);
DEBUG_Printf(DBG_CHN_MESG, "\nDisabling display %d ...\n", i + 1);
displaypoints[i].enabled = FALSE;
return;
}
}
DEBUG_Printf(DBG_CHN_MESG, "%d : ", i + 1);
DEBUG_DisplayExpr(displaypoints[i].exp);
DEBUG_Printf(DBG_CHN_MESG, " = ");
if (!displaypoints[i].enabled)
DEBUG_Printf(DBG_CHN_MESG, "(disabled)\n");
else
if (displaypoints[i].format == 'i')
DEBUG_ExamineMemory(&value, displaypoints[i].count, displaypoints[i].format);
else
DEBUG_Print(&value, displaypoints[i].count, displaypoints[i].format, 0);
}
int DEBUG_DoDisplay(void)
{
int i;
struct name_hash *cur_function_name = DEBUG_GetCurrentFrameFunctionName();
for (i = 0; i < ndisplays; i++) {
if (displaypoints[i].exp == NULL || !displaypoints[i].enabled)
continue;
if (displaypoints[i].function_name
&& displaypoints[i].function_name != cur_function_name)
continue;
DEBUG_PrintOneDisplay(i);
}
return TRUE;
}
int DEBUG_DelDisplay(int displaynum)
{
int i;
if (displaynum > ndisplays || displaynum == 0 || displaynum < -1
|| displaypoints[displaynum - 1].exp == NULL) {
DEBUG_Printf(DBG_CHN_MESG, "Invalid display number\n");
return TRUE;
}
if (displaynum == -1) {
for (i = 0; i < ndisplays; i++) {
if (displaypoints[i].exp != NULL) {
DEBUG_FreeExpr(displaypoints[i].exp);
displaypoints[i].exp = NULL;
}
}
displaypoints = DBG_realloc(displaypoints,
(maxdisplays = DISPTAB_DELTA) * sizeof(*displaypoints));
ndisplays = 0;
} else if (displaypoints[--displaynum].exp != NULL) {
DEBUG_FreeExpr(displaypoints[displaynum].exp);
displaypoints[displaynum].exp = NULL;
while (displaynum == ndisplays - 1
&& displaypoints[displaynum].exp == NULL)
--ndisplays, --displaynum;
if (maxdisplays - ndisplays >= 2 * DISPTAB_DELTA) {
maxdisplays = (ndisplays + DISPTAB_DELTA - 1) & ~(DISPTAB_DELTA - 1); /* MARK */
displaypoints = DBG_realloc(displaypoints,
maxdisplays * sizeof(*displaypoints));
}
}
return TRUE;
}
int DEBUG_EnableDisplay(int displaynum, int enable)
{
--displaynum;
if (displaynum >= ndisplays || displaynum < 0 || displaypoints[displaynum].exp == NULL) {
DEBUG_Printf(DBG_CHN_MESG, "Invalid display number\n");
return TRUE;
}
displaypoints[displaynum].enabled = enable;
if (!displaypoints[displaynum].function_name
|| displaypoints[displaynum].function_name == DEBUG_GetCurrentFrameFunctionName())
DEBUG_PrintOneDisplay(displaynum);
return TRUE;
}