260 lines
7.7 KiB
C
260 lines
7.7 KiB
C
/*
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* File display.c - display handling for Wine internal debugger.
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*
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* Copyright (C) 1997, Eric Youngdale.
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* Copyright (C) 2003, Michal Miroslaw
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "debugger.h"
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/* needs to be power of 2, search for MARK to see why :) */
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#define DISPTAB_DELTA 8
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struct display
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{
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struct expr* exp;
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int count;
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char format;
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char enabled;
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char func_buffer[sizeof(SYMBOL_INFO) + 256];
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SYMBOL_INFO* func;
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};
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static struct display *displaypoints = NULL;
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static unsigned int maxdisplays = 0, ndisplays = 0;
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static inline BOOL cmp_symbol(const SYMBOL_INFO* si1, const SYMBOL_INFO* si2)
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{
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/* FIXME: !memcmp(si1, si2, sizeof(SYMBOL_INFO) + si1->NameLen)
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* is wrong because sizeof(SYMBOL_INFO) can be aligned on 4-byte boundary
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* Note: we also need to zero out the structures before calling
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* stack_get_frame, so that un-touched fields by stack_get_frame
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* get the same value!!
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*/
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return !memcmp(si1, si2, FIELD_OFFSET(SYMBOL_INFO, Name)) &&
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!memcmp(si1->Name, si2->Name, si1->NameLen);
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}
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BOOL display_add(struct expr *exp, int count, char format)
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{
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unsigned i;
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BOOL local_binding = FALSE;
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for (i = 0; i < ndisplays; i++)
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if (displaypoints[i].exp == NULL)
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break;
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if (i == maxdisplays)
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{
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/* no space left - expand */
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maxdisplays += DISPTAB_DELTA;
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displaypoints = dbg_heap_realloc(displaypoints,
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maxdisplays * sizeof(*displaypoints));
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}
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if (i == ndisplays) ndisplays++;
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displaypoints[i].exp = expr_clone(exp, &local_binding);
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displaypoints[i].count = count;
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displaypoints[i].format = format;
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displaypoints[i].enabled = TRUE;
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if (local_binding)
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{
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displaypoints[i].func = (SYMBOL_INFO*)displaypoints[i].func_buffer;
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memset(displaypoints[i].func, 0, sizeof(SYMBOL_INFO));
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displaypoints[i].func->SizeOfStruct = sizeof(SYMBOL_INFO);
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displaypoints[i].func->MaxNameLen = sizeof(displaypoints[i].func_buffer) -
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sizeof(*displaypoints[i].func);
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if (!stack_get_current_symbol(displaypoints[i].func))
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{
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expr_free(displaypoints[i].exp);
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displaypoints[i].exp = NULL;
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return FALSE;
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}
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}
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else displaypoints[i].func = NULL;
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return TRUE;
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}
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BOOL display_info(void)
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{
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unsigned i;
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char buffer[sizeof(SYMBOL_INFO) + 256];
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SYMBOL_INFO* func;
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const char* info;
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func = (SYMBOL_INFO*)buffer;
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memset(func, 0, sizeof(SYMBOL_INFO));
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func->SizeOfStruct = sizeof(SYMBOL_INFO);
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func->MaxNameLen = sizeof(buffer) - sizeof(*func);
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if (!stack_get_current_symbol(func)) return FALSE;
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for (i = 0; i < ndisplays; i++)
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{
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if (displaypoints[i].exp == NULL) continue;
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dbg_printf("%d: ", i + 1);
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expr_print(displaypoints[i].exp);
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if (displaypoints[i].enabled)
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{
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if (displaypoints[i].func && !cmp_symbol(displaypoints[i].func, func))
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info = " (out of scope)";
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else
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info = "";
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}
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else
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info = " (disabled)";
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if (displaypoints[i].func)
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dbg_printf(" in %s", displaypoints[i].func->Name);
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dbg_printf("%s\n", info);
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}
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return TRUE;
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}
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static void print_one_display(int i)
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{
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struct dbg_lvalue lvalue;
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if (displaypoints[i].enabled)
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{
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lvalue = expr_eval(displaypoints[i].exp);
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if (lvalue.type.id == dbg_itype_none)
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{
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dbg_printf("Unable to evaluate expression ");
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expr_print(displaypoints[i].exp);
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dbg_printf("\nDisabling display %d ...\n", i + 1);
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displaypoints[i].enabled = FALSE;
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return;
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}
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}
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dbg_printf("%d: ", i + 1);
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expr_print(displaypoints[i].exp);
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dbg_printf(" = ");
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if (!displaypoints[i].enabled)
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dbg_printf("(disabled)\n");
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else
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if (displaypoints[i].format == 'i')
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memory_examine(&lvalue, displaypoints[i].count, displaypoints[i].format);
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else
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print_value(&lvalue, displaypoints[i].format, 0);
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}
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BOOL display_print(void)
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{
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unsigned i;
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char buffer[sizeof(SYMBOL_INFO) + 256];
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SYMBOL_INFO* func;
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func = (SYMBOL_INFO*)buffer;
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memset(func, 0, sizeof(SYMBOL_INFO));
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func->SizeOfStruct = sizeof(SYMBOL_INFO);
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func->MaxNameLen = sizeof(buffer) - sizeof(*func);
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if (!stack_get_current_symbol(func)) return FALSE;
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for (i = 0; i < ndisplays; i++)
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{
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if (displaypoints[i].exp == NULL || !displaypoints[i].enabled)
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continue;
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if (displaypoints[i].func && !cmp_symbol(displaypoints[i].func, func))
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continue;
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print_one_display(i);
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}
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return TRUE;
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}
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BOOL display_delete(int displaynum)
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{
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if (displaynum > ndisplays || displaynum == 0 || displaynum < -1 ||
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displaypoints[displaynum - 1].exp == NULL)
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{
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dbg_printf("Invalid display number\n");
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return TRUE;
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}
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if (displaynum == -1)
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{
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unsigned i;
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for (i = 0; i < ndisplays; i++)
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{
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if (displaypoints[i].exp != NULL)
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{
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expr_free(displaypoints[i].exp);
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displaypoints[i].exp = NULL;
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}
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}
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maxdisplays = DISPTAB_DELTA;
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displaypoints = dbg_heap_realloc(displaypoints,
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(maxdisplays = DISPTAB_DELTA) * sizeof(*displaypoints));
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ndisplays = 0;
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}
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else if (displaypoints[--displaynum].exp != NULL)
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{
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expr_free(displaypoints[displaynum].exp);
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displaypoints[displaynum].exp = NULL;
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while (displaynum == ndisplays - 1 && displaypoints[displaynum].exp == NULL)
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{
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--ndisplays;
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--displaynum;
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}
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if (maxdisplays - ndisplays >= 2 * DISPTAB_DELTA)
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{
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/* MARK */
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maxdisplays = (ndisplays + DISPTAB_DELTA - 1) & ~(DISPTAB_DELTA - 1);
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displaypoints = dbg_heap_realloc(displaypoints,
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maxdisplays * sizeof(*displaypoints));
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}
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}
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return TRUE;
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}
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BOOL display_enable(int displaynum, int enable)
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{
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char buffer[sizeof(SYMBOL_INFO) + 256];
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SYMBOL_INFO* func;
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func = (SYMBOL_INFO*)buffer;
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memset(func, 0, sizeof(SYMBOL_INFO));
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func->SizeOfStruct = sizeof(SYMBOL_INFO);
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func->MaxNameLen = sizeof(buffer) - sizeof(*func);
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if (!stack_get_current_symbol(func)) return FALSE;
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--displaynum;
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if (displaynum >= ndisplays || displaynum < 0 ||
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displaypoints[displaynum].exp == NULL)
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{
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dbg_printf("Invalid display number\n");
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return TRUE;
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}
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displaypoints[displaynum].enabled = enable;
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if (!displaypoints[displaynum].func ||
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cmp_symbol(displaypoints[displaynum].func, func))
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{
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print_one_display(displaynum);
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}
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return TRUE;
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}
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