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[/] [or1k/] [trunk/] [gdb-5.3/] [gdb/] [mi/] [mi-cmd-stack.c] - Rev 1765
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/* MI Command Set - stack commands. Copyright 2000, 2002 Free Software Foundation, Inc. Contributed by Cygnus Solutions (a Red Hat company). 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 "frame.h" #include "value.h" #include "mi-cmds.h" #include "ui-out.h" #include "symtab.h" /* FIXME: these should go in some .h file but stack.c doesn't have a corresponding .h file. These wrappers will be obsolete anyway, once we pull the plug on the sanitization. */ extern void select_frame_command_wrapper (char *, int); static void list_args_or_locals (int locals, int values, struct frame_info *fi); /* Print a list of the stack frames. Args can be none, in which case we want to print the whole backtrace, or a pair of numbers specifying the frame numbers at which to start and stop the display. If the two numbers are equal, a single frame will be displayed. */ enum mi_cmd_result mi_cmd_stack_list_frames (char *command, char **argv, int argc) { int frame_low; int frame_high; int i; struct frame_info *fi; if (!target_has_stack) error ("mi_cmd_stack_list_frames: No stack."); if (argc > 2 || argc == 1) error ("mi_cmd_stack_list_frames: Usage: [FRAME_LOW FRAME_HIGH]"); if (argc == 2) { frame_low = atoi (argv[0]); frame_high = atoi (argv[1]); } else { /* Called with no arguments, it means we want the whole backtrace. */ frame_low = -1; frame_high = -1; } /* Let's position fi on the frame at which to start the display. Could be the innermost frame if the whole stack needs displaying, or if frame_low is 0. */ for (i = 0, fi = get_current_frame (); fi && i < frame_low; i++, fi = get_prev_frame (fi)); if (fi == NULL) error ("mi_cmd_stack_list_frames: Not enough frames in stack."); ui_out_list_begin (uiout, "stack"); /* Now let;s print the frames up to frame_high, or until there are frames in the stack. */ for (; fi && (i <= frame_high || frame_high == -1); i++, fi = get_prev_frame (fi)) { QUIT; /* level == i: always print the level 'i' source == LOC_AND_ADDRESS: print the location and the address always, even for level 0. args == 0: don't print the arguments. */ print_frame_info (fi /* frame info */ , i /* level */ , LOC_AND_ADDRESS /* source */ , 0 /* args */ ); } ui_out_list_end (uiout); if (i < frame_high) error ("mi_cmd_stack_list_frames: Not enough frames in stack."); return MI_CMD_DONE; } enum mi_cmd_result mi_cmd_stack_info_depth (char *command, char **argv, int argc) { int frame_high; int i; struct frame_info *fi; if (!target_has_stack) error ("mi_cmd_stack_info_depth: No stack."); if (argc > 1) error ("mi_cmd_stack_info_depth: Usage: [MAX_DEPTH]"); if (argc == 1) frame_high = atoi (argv[0]); else /* Called with no arguments, it means we want the real depth of the stack. */ frame_high = -1; for (i = 0, fi = get_current_frame (); fi && (i < frame_high || frame_high == -1); i++, fi = get_prev_frame (fi)) QUIT; ui_out_field_int (uiout, "depth", i); return MI_CMD_DONE; } /* Print a list of the locals for the current frame. With argument of 0, print only the names, with argument of 1 print also the values. */ enum mi_cmd_result mi_cmd_stack_list_locals (char *command, char **argv, int argc) { if (argc != 1) error ("mi_cmd_stack_list_locals: Usage: PRINT_VALUES"); list_args_or_locals (1, atoi (argv[0]), selected_frame); return MI_CMD_DONE; } /* Print a list of the arguments for the current frame. With argument of 0, print only the names, with argument of 1 print also the values. */ enum mi_cmd_result mi_cmd_stack_list_args (char *command, char **argv, int argc) { int frame_low; int frame_high; int i; struct frame_info *fi; if (argc < 1 || argc > 3 || argc == 2) error ("mi_cmd_stack_list_args: Usage: PRINT_VALUES [FRAME_LOW FRAME_HIGH]"); if (argc == 3) { frame_low = atoi (argv[1]); frame_high = atoi (argv[2]); } else { /* Called with no arguments, it means we want args for the whole backtrace. */ frame_low = -1; frame_high = -1; } /* Let's position fi on the frame at which to start the display. Could be the innermost frame if the whole stack needs displaying, or if frame_low is 0. */ for (i = 0, fi = get_current_frame (); fi && i < frame_low; i++, fi = get_prev_frame (fi)); if (fi == NULL) error ("mi_cmd_stack_list_args: Not enough frames in stack."); ui_out_list_begin (uiout, "stack-args"); /* Now let's print the frames up to frame_high, or until there are frames in the stack. */ for (; fi && (i <= frame_high || frame_high == -1); i++, fi = get_prev_frame (fi)) { QUIT; ui_out_tuple_begin (uiout, "frame"); ui_out_field_int (uiout, "level", i); list_args_or_locals (0, atoi (argv[0]), fi); ui_out_tuple_end (uiout); } ui_out_list_end (uiout); if (i < frame_high) error ("mi_cmd_stack_list_args: Not enough frames in stack."); return MI_CMD_DONE; } /* Print a list of the locals or the arguments for the currently selected frame. If the argument passed is 0, printonly the names of the variables, if an argument of 1 is passed, print the values as well. */ static void list_args_or_locals (int locals, int values, struct frame_info *fi) { struct block *block; struct symbol *sym; int i, nsyms; static struct ui_stream *stb = NULL; stb = ui_out_stream_new (uiout); block = get_frame_block (fi, 0); ui_out_list_begin (uiout, locals ? "locals" : "args"); while (block != 0) { ALL_BLOCK_SYMBOLS (block, i, sym) { int print_me = 0; 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 */ print_me = 0; 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 (!locals) print_me = 1; break; case LOC_LOCAL: /* stack local */ case LOC_BASEREG: /* basereg local */ case LOC_STATIC: /* static */ case LOC_REGISTER: /* register */ if (locals) print_me = 1; break; } if (print_me) { if (values) ui_out_tuple_begin (uiout, NULL); ui_out_field_string (uiout, "name", SYMBOL_NAME (sym)); if (values) { struct symbol *sym2; if (!locals) sym2 = lookup_symbol (SYMBOL_NAME (sym), block, VAR_NAMESPACE, (int *) NULL, (struct symtab **) NULL); else sym2 = sym; print_variable_value (sym2, fi, stb->stream); ui_out_field_stream (uiout, "value", stb); ui_out_tuple_end (uiout); } } } if (BLOCK_FUNCTION (block)) break; else block = BLOCK_SUPERBLOCK (block); } ui_out_list_end (uiout); ui_out_stream_delete (stb); } enum mi_cmd_result mi_cmd_stack_select_frame (char *command, char **argv, int argc) { if (!target_has_stack) error ("mi_cmd_stack_select_frame: No stack."); if (argc > 1) error ("mi_cmd_stack_select_frame: Usage: [FRAME_SPEC]"); /* with no args, don't change frame */ if (argc == 0) select_frame_command_wrapper (0, 1 /* not used */ ); else select_frame_command_wrapper (argv[0], 1 /* not used */ ); return MI_CMD_DONE; }