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/* Tcl/Tk command definitions for Insight - Stack.
Copyright 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "target.h"
#include "breakpoint.h"
#include "linespec.h"
#include <tcl.h>
#include "gdbtk.h"
#include "gdbtk-cmds.h"
#include "gdbtk-wrapper.h"
static int gdb_block_vars (ClientData clientData,
Tcl_Interp * interp, int objc,
Tcl_Obj * CONST objv[]);
static int gdb_get_args_command (ClientData, Tcl_Interp *, int,
Tcl_Obj * CONST objv[]);
static int gdb_get_blocks (ClientData clientData,
Tcl_Interp * interp, int objc,
Tcl_Obj * CONST objv[]);
static int gdb_get_locals_command (ClientData, Tcl_Interp *, int,
Tcl_Obj * CONST objv[]);
static int gdb_get_vars_command (ClientData, Tcl_Interp *, int,
Tcl_Obj * CONST objv[]);
static int gdb_selected_block (ClientData clientData,
Tcl_Interp * interp, int argc,
Tcl_Obj * CONST objv[]);
static int gdb_selected_frame (ClientData clientData,
Tcl_Interp * interp, int argc,
Tcl_Obj * CONST objv[]);
static int gdb_stack (ClientData, Tcl_Interp *, int, Tcl_Obj * CONST[]);
static void get_frame_name (Tcl_Interp *interp, Tcl_Obj *list,
struct frame_info *fi);
int
Gdbtk_Stack_Init (Tcl_Interp *interp)
{
Tcl_CreateObjCommand (interp, "gdb_block_variables", gdbtk_call_wrapper,
gdb_block_vars, NULL);
Tcl_CreateObjCommand (interp, "gdb_get_blocks", gdbtk_call_wrapper,
gdb_get_blocks, NULL);
Tcl_CreateObjCommand (interp, "gdb_get_args", gdbtk_call_wrapper,
gdb_get_args_command, NULL);
Tcl_CreateObjCommand (interp, "gdb_get_locals", gdbtk_call_wrapper,
gdb_get_locals_command, NULL);
Tcl_CreateObjCommand (interp, "gdb_selected_block", gdbtk_call_wrapper,
gdb_selected_block, NULL);
Tcl_CreateObjCommand (interp, "gdb_selected_frame", gdbtk_call_wrapper,
gdb_selected_frame, NULL);
Tcl_CreateObjCommand (interp, "gdb_stack", gdbtk_call_wrapper, gdb_stack, NULL);
Tcl_LinkVar (interp, "gdb_selected_frame_level",
(char *) &selected_frame_level,
TCL_LINK_INT | TCL_LINK_READ_ONLY);
return TCL_OK;
}
/* This implements the tcl command gdb_block_vars.
*
* Returns all variables valid in the specified block.
*
* Arguments:
* The start and end addresses which identify the block.
* Tcl Result:
* All variables defined in the given block.
*/
static int
gdb_block_vars (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
struct block *block;
int i;
struct symbol *sym;
CORE_ADDR start, end;
if (objc < 3)
{
Tcl_WrongNumArgs (interp, 1, objv, "startAddr endAddr");
return TCL_ERROR;
}
Tcl_SetListObj (result_ptr->obj_ptr, 0, NULL);
if (selected_frame == NULL)
return TCL_OK;
start = string_to_core_addr (Tcl_GetStringFromObj (objv[1], NULL));
end = string_to_core_addr (Tcl_GetStringFromObj (objv[2], NULL));
block = get_frame_block (selected_frame, 0);
while (block != 0)
{
if (BLOCK_START (block) == start && BLOCK_END (block) == end)
{
ALL_BLOCK_SYMBOLS (block, i, sym)
{
switch (SYMBOL_CLASS (sym))
{
case LOC_ARG: /* argument */
case LOC_REF_ARG: /* reference arg */
case LOC_REGPARM: /* register arg */
case LOC_REGPARM_ADDR: /* indirect register arg */
case LOC_LOCAL_ARG: /* stack arg */
case LOC_BASEREG_ARG: /* basereg arg */
case LOC_LOCAL: /* stack local */
case LOC_BASEREG: /* basereg local */
case LOC_STATIC: /* static */
case LOC_REGISTER: /* register */
Tcl_ListObjAppendElement (interp, result_ptr->obj_ptr,
Tcl_NewStringObj (SYMBOL_NAME (sym),
-1));
break;
default:
break;
}
}
return TCL_OK;
}
else if (BLOCK_FUNCTION (block))
break;
else
block = BLOCK_SUPERBLOCK (block);
}
return TCL_OK;
}
/* This implements the tcl command gdb_get_blocks
*
* Returns the start and end addresses for all blocks in
* the selected frame.
*
* Arguments:
* None
* Tcl Result:
* A list of all valid blocks in the selected_frame.
*/
static int
gdb_get_blocks (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
struct block *block;
int i, junk;
struct symbol *sym;
CORE_ADDR pc;
Tcl_SetListObj (result_ptr->obj_ptr, 0, NULL);
if (selected_frame != NULL)
{
block = get_frame_block (selected_frame, 0);
pc = get_frame_pc (selected_frame);
while (block != 0)
{
junk = 0;
ALL_BLOCK_SYMBOLS (block, i, sym)
{
switch (SYMBOL_CLASS (sym))
{
default:
case LOC_UNDEF: /* catches errors */
case LOC_CONST: /* constant */
case LOC_TYPEDEF: /* local typedef */
case LOC_LABEL: /* local label */
case LOC_BLOCK: /* local function */
case LOC_CONST_BYTES: /* loc. byte seq. */
case LOC_UNRESOLVED: /* unresolved static */
case LOC_OPTIMIZED_OUT: /* optimized out */
junk = 1;
break;
case LOC_ARG: /* argument */
case LOC_REF_ARG: /* reference arg */
case LOC_REGPARM: /* register arg */
case LOC_REGPARM_ADDR: /* indirect register arg */
case LOC_LOCAL_ARG: /* stack arg */
case LOC_BASEREG_ARG: /* basereg arg */
case LOC_LOCAL: /* stack local */
case LOC_BASEREG: /* basereg local */
case LOC_STATIC: /* static */
case LOC_REGISTER: /* register */
junk = 0;
break;
}
}
/* If we found a block with locals in it, add it to the list.
Note that the ranges of start and end address for blocks
are exclusive, so double-check against the PC */
if (!junk && pc < BLOCK_END (block))
{
char *addr;
Tcl_Obj *elt = Tcl_NewListObj (0, NULL);
xasprintf (&addr, "0x%s", paddr_nz (BLOCK_START (block)));
Tcl_ListObjAppendElement (interp, elt,
Tcl_NewStringObj (addr, -1));
free(addr);
xasprintf (&addr, "0x%s", paddr_nz (BLOCK_END (block)));
Tcl_ListObjAppendElement (interp, elt,
Tcl_NewStringObj (addr, -1));
Tcl_ListObjAppendElement (interp, result_ptr->obj_ptr, elt);
free(addr);
}
if (BLOCK_FUNCTION (block))
break;
else
block = BLOCK_SUPERBLOCK (block);
}
}
return TCL_OK;
}
/* gdb_get_args -
* This and gdb_get_locals just call gdb_get_vars_command with the right
* value of clientData. We can't use the client data in the definition
* of the command, because the call wrapper uses this instead...
*/
static int
gdb_get_args_command (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
return gdb_get_vars_command ((ClientData) 1, interp, objc, objv);
}
static int
gdb_get_locals_command (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
return gdb_get_vars_command ((ClientData) 0, interp, objc, objv);
}
/* This implements the tcl commands "gdb_get_locals" and "gdb_get_args"
* This function sets the Tcl interpreter's result to a list of variable names
* depending on clientData. If clientData is one, the result is a list of
* arguments; zero returns a list of locals -- all relative to the block
* specified as an argument to the command. Valid commands include
* anything decode_line_1 can handle (like "main.c:2", "*0x02020202",
* and "main").
*
* Tcl Arguments:
* linespec - the linespec defining the scope of the lookup. Empty string
* to use the current block in the innermost frame.
* Tcl Result:
* A list of the locals or args
*/
static int
gdb_get_vars_command (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
struct symtabs_and_lines sals;
struct symbol *sym;
struct block *block;
char **canonical, *args;
int i, arguments;
if (objc > 2)
{
Tcl_WrongNumArgs (interp, 1, objv,
"[function:line|function|line|*addr]");
return TCL_ERROR;
}
arguments = (int) clientData;
/* Initialize the result pointer to an empty list. */
Tcl_SetListObj (result_ptr->obj_ptr, 0, NULL);
if (objc == 2)
{
args = Tcl_GetStringFromObj (objv[1], NULL);
sals = decode_line_1 (&args, 1, NULL, 0, &canonical);
if (sals.nelts == 0)
{
gdbtk_set_result (interp, "error decoding line");
return TCL_ERROR;
}
/* Resolve all line numbers to PC's */
for (i = 0; i < sals.nelts; i++)
resolve_sal_pc (&sals.sals[i]);
block = block_for_pc (sals.sals[0].pc);
}
else
{
/* Specified currently selected frame */
if (selected_frame == NULL)
return TCL_OK;
block = get_frame_block (selected_frame, 0);
}
while (block != 0)
{
ALL_BLOCK_SYMBOLS (block, i, sym)
{
switch (SYMBOL_CLASS (sym))
{
default:
case LOC_UNDEF: /* catches errors */
case LOC_CONST: /* constant */
case LOC_TYPEDEF: /* local typedef */
case LOC_LABEL: /* local label */
case LOC_BLOCK: /* local function */
case LOC_CONST_BYTES: /* loc. byte seq. */
case LOC_UNRESOLVED: /* unresolved static */
case LOC_OPTIMIZED_OUT: /* optimized out */
break;
case LOC_ARG: /* argument */
case LOC_REF_ARG: /* reference arg */
case LOC_REGPARM: /* register arg */
case LOC_REGPARM_ADDR: /* indirect register arg */
case LOC_LOCAL_ARG: /* stack arg */
case LOC_BASEREG_ARG: /* basereg arg */
if (arguments)
Tcl_ListObjAppendElement (interp, result_ptr->obj_ptr,
Tcl_NewStringObj (SYMBOL_NAME (sym), -1));
break;
case LOC_LOCAL: /* stack local */
case LOC_BASEREG: /* basereg local */
case LOC_STATIC: /* static */
case LOC_REGISTER: /* register */
if (!arguments)
Tcl_ListObjAppendElement (interp, result_ptr->obj_ptr,
Tcl_NewStringObj (SYMBOL_NAME (sym), -1));
break;
}
}
if (BLOCK_FUNCTION (block))
break;
else
block = BLOCK_SUPERBLOCK (block);
}
return TCL_OK;
}
/* This implements the tcl command gdb_selected_block
*
* Returns the start and end addresses of the innermost
* block in the selected frame.
*
* Arguments:
* None
* Tcl Result:
* The currently selected block's start and end addresses
*/
static int
gdb_selected_block (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
char *start = NULL;
char *end = NULL;
if (selected_frame == NULL)
{
xasprintf (&start, "%s", "");
xasprintf (&end, "%s", "");
}
else
{
struct block *block;
block = get_frame_block (selected_frame, 0);
xasprintf (&start, "0x%s", paddr_nz (BLOCK_START (block)));
xasprintf (&end, "0x%s", paddr_nz (BLOCK_END (block)));
}
Tcl_SetListObj (result_ptr->obj_ptr, 0, NULL);
Tcl_ListObjAppendElement (interp, result_ptr->obj_ptr,
Tcl_NewStringObj (start, -1));
Tcl_ListObjAppendElement (interp, result_ptr->obj_ptr,
Tcl_NewStringObj (end, -1));
free(start);
free(end);
return TCL_OK;
}
/* This implements the tcl command gdb_selected_frame
* Returns the address of the selected frame
* frame.
*
* Arguments:
* None
* Tcl Result:
* The currently selected frame's address
*/
static int
gdb_selected_frame (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
char *frame;
if (selected_frame == NULL)
xasprintf (&frame, "%s","");
else
xasprintf (&frame, "0x%s", paddr_nz (FRAME_FP (selected_frame)));
Tcl_SetStringObj (result_ptr->obj_ptr, frame, -1);
free(frame);
return TCL_OK;
}
/* This implements the tcl command gdb_stack.
* It builds up a list of stack frames.
*
* Tcl Arguments:
* start - starting stack frame
* count - number of frames to inspect
* Tcl Result:
* A list of function names
*/
static int
gdb_stack (ClientData clientData, Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[])
{
int start, count;
if (objc < 3)
{
Tcl_WrongNumArgs (interp, 1, objv, "start count");
return TCL_ERROR;
}
if (Tcl_GetIntFromObj (NULL, objv[1], &start))
{
result_ptr->flags |= GDBTK_IN_TCL_RESULT;
return TCL_ERROR;
}
if (Tcl_GetIntFromObj (NULL, objv[2], &count))
{
result_ptr->flags |= GDBTK_IN_TCL_RESULT;
return TCL_ERROR;
}
if (target_has_stack)
{
gdb_result r;
struct frame_info *top;
struct frame_info *fi;
/* Find the outermost frame */
r = GDB_get_current_frame (&fi);
if (r != GDB_OK)
return TCL_ERROR;
while (fi != NULL)
{
top = fi;
r = GDB_get_prev_frame (fi, &fi);
if (r != GDB_OK)
fi = NULL;
}
/* top now points to the top (outermost frame) of the
stack, so point it to the requested start */
start = -start;
r = GDB_find_relative_frame (top, &start, &top);
result_ptr->obj_ptr = Tcl_NewListObj (0, NULL);
if (r != GDB_OK)
return TCL_OK;
/* If start != 0, then we have asked to start outputting
frames beyond the innermost stack frame */
if (start == 0)
{
fi = top;
while (fi && count--)
{
get_frame_name (interp, result_ptr->obj_ptr, fi);
r = GDB_get_next_frame (fi, &fi);
if (r != GDB_OK)
break;
}
}
}
return TCL_OK;
}
/* A helper function for get_stack which adds information about
* the stack frame FI to the caller's LIST.
*
* This is stolen from print_frame_info in stack.c.
*/
static void
get_frame_name (Tcl_Interp *interp, Tcl_Obj *list, struct frame_info *fi)
{
struct symtab_and_line sal;
struct symbol *func = NULL;
register char *funname = 0;
enum language funlang = language_unknown;
Tcl_Obj *objv[1];
if (frame_in_dummy (fi))
{
objv[0] = Tcl_NewStringObj ("<function called from gdb>\n", -1);
Tcl_ListObjAppendElement (interp, list, objv[0]);
return;
}
if (fi->signal_handler_caller)
{
objv[0] = Tcl_NewStringObj ("<signal handler called>\n", -1);
Tcl_ListObjAppendElement (interp, list, objv[0]);
return;
}
sal =
find_pc_line (fi->pc,
fi->next != NULL
&& !fi->next->signal_handler_caller
&& !frame_in_dummy (fi->next));
func = find_pc_function (fi->pc);
if (func)
{
struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
if (msymbol != NULL
&& (SYMBOL_VALUE_ADDRESS (msymbol)
> BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
{
func = 0;
funname = GDBTK_SYMBOL_SOURCE_NAME (msymbol);
funlang = SYMBOL_LANGUAGE (msymbol);
}
else
{
funname = GDBTK_SYMBOL_SOURCE_NAME (func);
funlang = SYMBOL_LANGUAGE (func);
}
}
else
{
struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
if (msymbol != NULL)
{
funname = GDBTK_SYMBOL_SOURCE_NAME (msymbol);
funlang = SYMBOL_LANGUAGE (msymbol);
}
}
if (sal.symtab)
{
objv[0] = Tcl_NewStringObj (funname, -1);
Tcl_ListObjAppendElement (interp, list, objv[0]);
}
else
{
#if 0
/* we have no convenient way to deal with this yet... */
if (fi->pc != sal.pc || !sal.symtab)
{
print_address_numeric (fi->pc, 1, gdb_stdout);
printf_filtered (" in ");
}
printf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang,
DMGL_ANSI);
#endif
objv[0] = Tcl_NewStringObj (funname != NULL ? funname : "??", -1);
#ifdef PC_LOAD_SEGMENT
/* If we couldn't print out function name but if can figure out what
load segment this pc value is from, at least print out some info
about its load segment. */
if (!funname)
{
Tcl_AppendStringsToObj (objv[0], " from ", PC_LOAD_SEGMENT (fi->pc),
(char *) NULL);
}
#endif
#ifdef PC_SOLIB
if (!funname)
{
char *lib = PC_SOLIB (fi->pc);
if (lib)
{
Tcl_AppendStringsToObj (objv[0], " from ", lib, (char *) NULL);
}
}
#endif
Tcl_ListObjAppendElement (interp, list, objv[0]);
}
}
|