4aa7d6a268
* BUG: Debugger does not crash anymore when displaying a static collection-like object. git-svn-id: svn://localhost/gambas/trunk@7995 867c0c6c-44f3-4631-809d-bfa615b0a4ec
622 lines
12 KiB
C
622 lines
12 KiB
C
/***************************************************************************
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gbx_debug.c
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(c) 2000-2013 Benoît Minisini <gambas@users.sourceforge.net>
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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, or (at your option)
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any later version.
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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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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 Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __GBX_DEBUG_C
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#include "gb_common.h"
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#include "gb_common_buffer.h"
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#include "gb_common_case.h"
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#include <stdarg.h>
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#include "gb_buffer.h"
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#include "gb_array.h"
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#include "gb_error.h"
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#include "gbx_exec.h"
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#include "gbx_api.h"
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#include "gbx_class.h"
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#include "gbx_c_array.h"
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#include "gbx_project.h"
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#include "gbx_stack.h"
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#include "gbx_subr.h"
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#include "gbx_debug.h"
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DEBUG_INTERFACE DEBUG;
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DEBUG_INFO *DEBUG_info = NULL;
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int DEBUG_inside_eval = 0;
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static bool calc_line_from_position(CLASS *class, FUNCTION *func, PCODE *addr, ushort *line)
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{
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int i;
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ushort pos = addr - func->code;
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ushort *post;
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if (func->debug)
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{
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post = func->debug->pos;
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for (i = 0; i < (func->debug->nline - 1); i++)
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{
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if (pos >= post[i] && pos < post[i + 1])
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{
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*line = i + func->debug->line;
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return FALSE;
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}
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}
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/*printf("pos = %d addr=%p func->code=%p\n", pos, addr, func->code);*/
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}
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return TRUE;
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}
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const char *DEBUG_get_position(CLASS *cp, FUNCTION *fp, PCODE *pc)
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{
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#if DEBUG_MEMORY
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static char buffer[256];
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#endif
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ushort line = 0;
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if (!cp || !pc)
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return "?";
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if (fp != NULL && fp->debug)
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calc_line_from_position(cp, fp, pc, &line);
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#if DEBUG_MEMORY
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snprintf(buffer, sizeof(buffer), "%s.%s.%d",
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cp ? cp->name : "?",
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(fp && fp->debug) ? fp->debug->name : "?",
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line);
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return buffer;
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#else
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snprintf(COMMON_buffer, COMMON_BUF_MAX, "%.64s.%.64s.%d",
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cp->name,
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(fp && fp->debug) ? fp->debug->name : "?",
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line);
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return COMMON_buffer;
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#endif
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}
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const char *DEBUG_get_current_position(void)
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{
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return DEBUG_get_position(CP, FP, PC);
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}
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void DEBUG_init(void)
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{
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if (!EXEC_debug)
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return;
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COMPONENT_load(COMPONENT_create("gb.debug"));
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LIBRARY_get_interface_by_name("gb.debug", DEBUG_INTERFACE_VERSION, &DEBUG);
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DEBUG_info = DEBUG.Init((GB_DEBUG_INTERFACE *)(void *)GAMBAS_DebugApi, EXEC_fifo, EXEC_fifo_name);
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if (!DEBUG_info)
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ERROR_panic("Cannot initializing debug mode");
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if (EXEC_profile)
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{
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EXEC_profile_instr = TRUE;
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DEBUG.Profile.Init(EXEC_profile_path);
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}
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}
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void DEBUG_exit(void)
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{
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if (!EXEC_debug || !DEBUG_is_init())
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return;
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DEBUG.Exit();
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if (EXEC_profile)
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DEBUG.Profile.Exit();
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}
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void DEBUG_enter_event_loop(void)
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{
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if (EXEC_profile)
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DEBUG.Profile.Begin(NULL, NULL);
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}
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void DEBUG_leave_event_loop(void)
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{
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if (EXEC_profile)
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DEBUG.Profile.End(NULL, NULL);
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}
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void DEBUG_where(void)
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{
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//static bool breakpoint = FALSE;
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const char *where = DEBUG_get_current_position();
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/*if (!breakpoint && !strcmp(where, "FForm._new.97"))
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{
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breakpoint = TRUE;
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BREAKPOINT();
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}*/
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fprintf(stderr, "%s: ", where);
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}
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bool DEBUG_get_value(const char *sym, int len, GB_VARIANT *ret)
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{
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int i;
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VALUE value;
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LOCAL_SYMBOL *lp;
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GLOBAL_SYMBOL *gp;
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CLASS_VAR *var;
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char *addr;
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CLASS *class;
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void *ref;
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if (DEBUG_info->fp)
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{
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for (i = 0; i < DEBUG_info->fp->debug->n_local; i++)
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{
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lp = &DEBUG_info->fp->debug->local[i];
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if (len == lp->sym.len && strncasecmp(sym, lp->sym.name, len) == 0)
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{
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if (lp->value >= 0)
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value = DEBUG_info->bp[lp->value];
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else
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value = DEBUG_info->pp[lp->value];
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goto __FOUND;
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}
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}
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}
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if (DEBUG_info->cp)
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{
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for (i = 0; i < DEBUG_info->cp->load->n_global; i++)
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{
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gp = &DEBUG_info->cp->load->global[i];
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if (len != gp->sym.len || strncasecmp(sym, gp->sym.name, len) != 0)
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continue;
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if (CTYPE_get_kind(gp->ctype) == TK_VARIABLE)
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{
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if (!CTYPE_is_static(gp->ctype))
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{
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if (!DEBUG_info->op)
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continue;
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var = &DEBUG_info->cp->load->dyn[gp->value];
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addr = (char *)DEBUG_info->op + var->pos;
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ref = DEBUG_info->op;
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}
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else
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{
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var = &DEBUG_info->cp->load->stat[gp->value];
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addr = (char *)DEBUG_info->cp->stat + var->pos;
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ref = DEBUG_info->cp;
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}
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VALUE_class_read(DEBUG_info->cp, &value, addr, var->type, ref);
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goto __FOUND;
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}
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else if (CTYPE_get_kind(gp->ctype) == TK_CONST)
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{
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VALUE_class_constant(DEBUG_info->cp, &value, gp->value);
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goto __FOUND;
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}
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}
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}
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//class = CLASS_look_global(sym, len);
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class = CLASS_look(sym, len);
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if (class)
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{
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if (class->auto_create && class->instance)
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{
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value._object.class = class;
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value._object.object = class->instance;
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value._object.super = NULL;
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}
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else
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{
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value.type = T_CLASS;
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value._class.class = class;
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value._class.super = NULL;
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}
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goto __FOUND;
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}
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return TRUE;
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__FOUND:
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BORROW(&value);
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VALUE_conv_variant(&value);
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UNBORROW(&value);
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*((VALUE *)ret) = value;
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return FALSE;
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}
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int DEBUG_set_value(const char *sym, int len, VALUE *value)
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{
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int i;
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LOCAL_SYMBOL *lp;
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GLOBAL_SYMBOL *gp;
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CLASS_VAR *var;
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char *addr;
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VALUE *where;
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bool ret = GB_DEBUG_SET_OK;
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TRY
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{
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if (DEBUG_info->fp)
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{
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for (i = 0; i < DEBUG_info->fp->debug->n_local; i++)
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{
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lp = &DEBUG_info->fp->debug->local[i];
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if (len == lp->sym.len && strncasecmp(sym, lp->sym.name, len) == 0)
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{
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if (lp->value >= 0)
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where = &DEBUG_info->bp[lp->value];
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else
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where = &DEBUG_info->pp[lp->value];
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VALUE_conv(value, where->type);
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RELEASE(where);
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*where = *value;
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BORROW(where);
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goto __FOUND;
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}
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}
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}
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if (DEBUG_info->cp)
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{
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for (i = 0; i < DEBUG_info->cp->load->n_global; i++)
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{
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gp = &DEBUG_info->cp->load->global[i];
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if (len != gp->sym.len || strncasecmp(sym, gp->sym.name, len) != 0)
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continue;
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if (CTYPE_get_kind(gp->ctype) == TK_VARIABLE)
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{
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if (!CTYPE_is_static(gp->ctype) && DEBUG_info->op)
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{
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var = &DEBUG_info->cp->load->dyn[gp->value];
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addr = (char *)DEBUG_info->op + var->pos;
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}
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else
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{
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var = &DEBUG_info->cp->load->stat[gp->value];
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addr = (char *)DEBUG_info->cp->stat + var->pos;
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}
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VALUE_class_write(DEBUG_info->cp, value, addr, var->type);
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goto __FOUND;
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}
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}
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}
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ret = GB_DEBUG_SET_READ_ONLY;
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__FOUND:
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0;
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}
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CATCH
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{
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ret = GB_DEBUG_SET_ERROR;
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}
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END_TRY
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if (ret == GB_DEBUG_SET_ERROR)
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EXEC_set_native_error(TRUE);
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return ret;
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}
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int DEBUG_get_object_access_type(void *object, CLASS *class, int *count)
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{
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CLASS_DESC *desc;
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CLASS_DESC_METHOD *dm;
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char type;
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int access = GB_DEBUG_ACCESS_NORMAL;
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//fprintf(stderr, "DEBUG_can_be_used_like_an_array: %p %s ?\n", object, class->name);
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if (!object)
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goto __NORMAL;
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if (class == CLASS_Class || OBJECT_is_class(object))
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{
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class = (CLASS *)object;
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object = NULL;
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CLASS_load(class);
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}
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dm = CLASS_get_special_desc(class, SPEC_GET);
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if (!dm)
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{
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//fprintf(stderr, "No _get method\n");
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goto __NORMAL;
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}
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if (dm->npmin != 1 || dm->npmax != 1)
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{
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//fprintf(stderr, "No _get(Arg AS Integer) method\n");
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goto __NORMAL;
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}
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if (*dm->signature == T_INTEGER)
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access = GB_DEBUG_ACCESS_ARRAY;
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else if (*dm->signature == T_STRING)
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access = GB_DEBUG_ACCESS_COLLECTION;
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else
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goto __NORMAL;
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desc = CLASS_get_symbol_desc(class, "Count");
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if (!desc)
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goto __NORMAL;
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type = CLASS_DESC_get_type(desc);
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// The two only possible cases:
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// A static read-only property, and object == NULL
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// or a dynamic read-only property, and object != NULL
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if (!((type == CD_PROPERTY_READ && object) || (type == CD_STATIC_PROPERTY_READ && !object)))
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goto __NORMAL;
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TRY
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{
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if (desc->property.native)
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{
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if (EXEC_call_native(desc->property.read, object, desc->property.type, 0))
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access = GB_DEBUG_ACCESS_NORMAL;
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}
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else
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{
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EXEC.class = desc->property.class;
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EXEC.object = object;
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EXEC.nparam = 0;
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EXEC.native = FALSE;
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EXEC.index = (int)(intptr_t)desc->property.read;
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//EXEC.func = &class->load->func[(int)desc->property.read];
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EXEC_function_keep();
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TEMP = *RP;
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UNBORROW(RP);
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RP->type = T_VOID;
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}
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if (access != GB_DEBUG_ACCESS_NORMAL)
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{
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VALUE_conv_integer(&TEMP);
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*count = TEMP._integer.value;
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}
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}
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CATCH
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{
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access = GB_DEBUG_ACCESS_NORMAL;
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}
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END_TRY
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// For collection-like objects, check _next and Key property
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if (access == GB_DEBUG_ACCESS_COLLECTION)
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{
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dm = CLASS_get_special_desc(class, SPEC_NEXT);
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if (!dm)
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goto __NORMAL;
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desc = CLASS_get_symbol_desc(class, "Key");
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if (!desc)
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goto __NORMAL;
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type = CLASS_DESC_get_type(desc);
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if (type != CD_PROPERTY_READ && type != CD_PROPERTY && type != CD_STATIC_PROPERTY_READ && type != CD_STATIC_PROPERTY && type != CD_VARIABLE && type != CD_STATIC_VARIABLE)
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goto __NORMAL;
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}
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return access;
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__NORMAL:
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return GB_DEBUG_ACCESS_NORMAL;
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}
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void DEBUG_print_backtrace(STACK_BACKTRACE *bt)
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{
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int i, n;
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bool stop;
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STACK_BACKTRACE *NO_WARNING(end);
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//STACK_CONTEXT *sc = (STACK_CONTEXT *)(STACK_base + STACK_size) - err->bt_count;
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//fprintf(stderr, "0: %s\n", DEBUG_get_position(err->cp, err->fp, err->pc));
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for (i = 0, n = 0, stop = FALSE; !stop; i++)
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{
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//fprintf(stderr, "%d: %s\n", i, DEBUG_get_position(bt[i].cp, bt[i].fp, bt[i].pc));
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if (STACK_backtrace_is_end(&bt[i]))
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{
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stop = TRUE;
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end = &bt[i];
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STACK_backtrace_clear_end(end);
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}
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if (bt[i].pc)
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{
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n++;
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fprintf(stderr, "%s ", DEBUG_get_position(bt[i].cp, bt[i].fp, bt[i].pc));
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}
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}
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fputc('\n', stderr);
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STACK_backtrace_set_end(end);
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}
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void DEBUG_print_current_backtrace(void)
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{
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STACK_BACKTRACE *bt = STACK_get_backtrace();
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if (bt)
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{
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DEBUG_print_backtrace(bt);
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STACK_free_backtrace(&bt);
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}
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}
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GB_ARRAY DEBUG_get_string_array_from_backtrace(STACK_BACKTRACE *bt)
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{
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GB_ARRAY array;
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int i, n, size;
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STACK_BACKTRACE *end;
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for (i = 0, size = 0;; i++)
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{
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if (bt[i].pc)
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size++;
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if (STACK_backtrace_is_end(&bt[i]))
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{
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end = &bt[i];
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STACK_backtrace_clear_end(end);
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break;
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}
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}
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GB_ArrayNew(&array, GB_T_STRING, size);
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//*((char **)GB_ArrayGet(array, 0)) = STRING_new_zero(DEBUG_get_position(err->cp, err->fp, err->pc));
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for (i = 0, n = 0; n < size; i++)
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{
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if (!bt[i].pc)
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continue;
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*((char **)GB_ArrayGet(array, n)) = STRING_new_zero(DEBUG_get_position(bt[i].cp, bt[i].fp, bt[i].pc));
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n++;
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}
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STACK_backtrace_set_end(end);
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return array;
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}
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GB_CLASS DEBUG_find_class(const char *name)
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{
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CLASS *class;
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CLASS *save = CP;
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// As the startup class is automatically exported, this is the only way for the debugger to find it.
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if (PROJECT_class && !strcmp(name, PROJECT_class->name))
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return (GB_CLASS)PROJECT_class;
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CP = NULL;
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class = CLASS_find(name);
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CP = save;
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return (GB_CLASS)class;
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}
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void DEBUG_enum_keys(void *object, GB_DEBUG_ENUM_CB cb)
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{
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CENUM *old;
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CENUM *cenum = NULL;
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CLASS *class;
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bool err = FALSE;
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char *str;
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int len;
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char *save_key;
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int save_lkey;
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GB_VALUE value;
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void *prop_ob;
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old = EXEC_enum;
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class = OBJECT_class(object);
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if (class == CLASS_Class)
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{
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class = (CLASS *)object;
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object = NULL;
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}
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prop_ob = object ? object : class;
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TRY
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{
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GB_GetProperty(prop_ob, "Key");
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SUBR_get_string_len(&TEMP, &save_key, &save_lkey);
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(*cb)(save_key, save_lkey);
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cenum = CENUM_create(prop_ob);
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EXEC_enum = cenum;
|
|
EXEC_special(SPEC_FIRST, class, object, 0, TRUE);
|
|
EXEC_enum = old;
|
|
|
|
if (cenum->stop)
|
|
{
|
|
err = TRUE;
|
|
goto __END;
|
|
}
|
|
|
|
for(;;)
|
|
{
|
|
EXEC_enum = cenum;
|
|
err = EXEC_special(SPEC_NEXT, class, object, 0, TRUE);
|
|
EXEC_enum = old;
|
|
|
|
if (err || cenum->stop)
|
|
{
|
|
err = TRUE;
|
|
break;
|
|
}
|
|
|
|
GB_GetProperty(prop_ob, "Key");
|
|
|
|
SUBR_get_string_len(&TEMP, &str, &len);
|
|
(*cb)(str, len);
|
|
}
|
|
|
|
__END:
|
|
|
|
value.type = GB_T_CSTRING;
|
|
value._string.value.addr = save_key;
|
|
value._string.value.start = 0;
|
|
value._string.value.len = save_lkey;
|
|
GB_SetProperty(prop_ob, "Key", &value);
|
|
|
|
if (err)
|
|
OBJECT_UNREF(cenum);
|
|
}
|
|
CATCH
|
|
{
|
|
OBJECT_UNREF(cenum);
|
|
}
|
|
END_TRY
|
|
}
|
|
|
|
void DEBUG_enter_eval()
|
|
{
|
|
DEBUG_inside_eval++;
|
|
}
|
|
|
|
void DEBUG_leave_eval()
|
|
{
|
|
DEBUG_inside_eval--;
|
|
}
|