1111 lines
31 KiB
C
1111 lines
31 KiB
C
/* Print in infix form a struct expression.
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Copyright (C) 1986-2017 Free Software Foundation, Inc.
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This file is part of GDB.
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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 3 of the License, or
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(at your option) 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "language.h"
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#include "parser-defs.h"
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#include "user-regs.h" /* For user_reg_map_regnum_to_name. */
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#include "target.h"
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#include "block.h"
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#include "objfiles.h"
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#include "valprint.h"
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#include <ctype.h>
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void
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print_expression (struct expression *exp, struct ui_file *stream)
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{
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int pc = 0;
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print_subexp (exp, &pc, stream, PREC_NULL);
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}
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/* Print the subexpression of EXP that starts in position POS, on STREAM.
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PREC is the precedence of the surrounding operator;
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if the precedence of the main operator of this subexpression is less,
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parentheses are needed here. */
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void
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print_subexp (struct expression *exp, int *pos,
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struct ui_file *stream, enum precedence prec)
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{
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exp->language_defn->la_exp_desc->print_subexp (exp, pos, stream, prec);
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}
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/* Standard implementation of print_subexp for use in language_defn
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vectors. */
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void
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print_subexp_standard (struct expression *exp, int *pos,
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struct ui_file *stream, enum precedence prec)
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{
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unsigned tem;
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const struct op_print *op_print_tab;
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int pc;
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unsigned nargs;
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const char *op_str;
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int assign_modify = 0;
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enum exp_opcode opcode;
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enum precedence myprec = PREC_NULL;
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/* Set to 1 for a right-associative operator. */
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int assoc = 0;
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struct value *val;
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char *tempstr = NULL;
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op_print_tab = exp->language_defn->la_op_print_tab;
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pc = (*pos)++;
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opcode = exp->elts[pc].opcode;
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switch (opcode)
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{
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/* Common ops */
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case OP_TYPE:
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(*pos) += 2;
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type_print (exp->elts[pc + 1].type, "", stream, 0);
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return;
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case OP_SCOPE:
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myprec = PREC_PREFIX;
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assoc = 0;
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fputs_filtered (type_name_no_tag (exp->elts[pc + 1].type), stream);
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fputs_filtered ("::", stream);
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nargs = longest_to_int (exp->elts[pc + 2].longconst);
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(*pos) += 4 + BYTES_TO_EXP_ELEM (nargs + 1);
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fputs_filtered (&exp->elts[pc + 3].string, stream);
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return;
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case OP_LONG:
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{
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struct value_print_options opts;
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get_no_prettyformat_print_options (&opts);
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(*pos) += 3;
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value_print (value_from_longest (exp->elts[pc + 1].type,
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exp->elts[pc + 2].longconst),
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stream, &opts);
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}
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return;
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case OP_DOUBLE:
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{
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struct value_print_options opts;
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get_no_prettyformat_print_options (&opts);
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(*pos) += 3;
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value_print (value_from_double (exp->elts[pc + 1].type,
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exp->elts[pc + 2].doubleconst),
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stream, &opts);
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}
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return;
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case OP_VAR_VALUE:
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{
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const struct block *b;
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(*pos) += 3;
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b = exp->elts[pc + 1].block;
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if (b != NULL
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&& BLOCK_FUNCTION (b) != NULL
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&& SYMBOL_PRINT_NAME (BLOCK_FUNCTION (b)) != NULL)
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{
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fputs_filtered (SYMBOL_PRINT_NAME (BLOCK_FUNCTION (b)), stream);
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fputs_filtered ("::", stream);
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}
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fputs_filtered (SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol), stream);
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}
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return;
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case OP_VAR_MSYM_VALUE:
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{
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(*pos) += 3;
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fputs_filtered (MSYMBOL_PRINT_NAME (exp->elts[pc + 2].msymbol), stream);
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}
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return;
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case OP_VAR_ENTRY_VALUE:
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{
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(*pos) += 2;
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fprintf_filtered (stream, "%s@entry",
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SYMBOL_PRINT_NAME (exp->elts[pc + 1].symbol));
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}
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return;
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case OP_LAST:
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(*pos) += 2;
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fprintf_filtered (stream, "$%d",
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longest_to_int (exp->elts[pc + 1].longconst));
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return;
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case OP_REGISTER:
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{
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const char *name = &exp->elts[pc + 2].string;
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(*pos) += 3 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1);
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fprintf_filtered (stream, "$%s", name);
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return;
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}
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case OP_BOOL:
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(*pos) += 2;
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fprintf_filtered (stream, "%s",
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longest_to_int (exp->elts[pc + 1].longconst)
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? "TRUE" : "FALSE");
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return;
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case OP_INTERNALVAR:
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(*pos) += 2;
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fprintf_filtered (stream, "$%s",
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internalvar_name (exp->elts[pc + 1].internalvar));
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return;
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case OP_FUNCALL:
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(*pos) += 2;
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nargs = longest_to_int (exp->elts[pc + 1].longconst);
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered (" (", stream);
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for (tem = 0; tem < nargs; tem++)
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{
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if (tem != 0)
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fputs_filtered (", ", stream);
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print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
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}
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fputs_filtered (")", stream);
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return;
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case OP_NAME:
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nargs = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
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fputs_filtered (&exp->elts[pc + 2].string, stream);
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return;
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case OP_STRING:
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{
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struct value_print_options opts;
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nargs = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
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/* LA_PRINT_STRING will print using the current repeat count threshold.
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If necessary, we can temporarily set it to zero, or pass it as an
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additional parameter to LA_PRINT_STRING. -fnf */
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get_user_print_options (&opts);
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LA_PRINT_STRING (stream, builtin_type (exp->gdbarch)->builtin_char,
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(gdb_byte *) &exp->elts[pc + 2].string, nargs,
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NULL, 0, &opts);
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}
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return;
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case OP_OBJC_NSSTRING: /* Objective-C Foundation Class
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NSString constant. */
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{
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struct value_print_options opts;
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nargs = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
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fputs_filtered ("@\"", stream);
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get_user_print_options (&opts);
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LA_PRINT_STRING (stream, builtin_type (exp->gdbarch)->builtin_char,
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(gdb_byte *) &exp->elts[pc + 2].string, nargs,
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NULL, 0, &opts);
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fputs_filtered ("\"", stream);
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}
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return;
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case OP_OBJC_MSGCALL:
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{ /* Objective C message (method) call. */
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char *selector;
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(*pos) += 3;
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nargs = longest_to_int (exp->elts[pc + 2].longconst);
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fprintf_unfiltered (stream, "[");
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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if (0 == target_read_string (exp->elts[pc + 1].longconst,
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&selector, 1024, NULL))
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{
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error (_("bad selector"));
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return;
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}
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if (nargs)
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{
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char *s, *nextS;
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s = (char *) alloca (strlen (selector) + 1);
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strcpy (s, selector);
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for (tem = 0; tem < nargs; tem++)
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{
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nextS = strchr (s, ':');
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gdb_assert (nextS); /* Make sure we found ':'. */
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*nextS = '\0';
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fprintf_unfiltered (stream, " %s: ", s);
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s = nextS + 1;
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print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
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}
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}
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else
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{
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fprintf_unfiltered (stream, " %s", selector);
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}
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fprintf_unfiltered (stream, "]");
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/* "selector" was malloc'd by target_read_string. Free it. */
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xfree (selector);
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return;
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}
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case OP_ARRAY:
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(*pos) += 3;
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nargs = longest_to_int (exp->elts[pc + 2].longconst);
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nargs -= longest_to_int (exp->elts[pc + 1].longconst);
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nargs++;
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tem = 0;
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if (exp->elts[pc + 4].opcode == OP_LONG
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&& exp->elts[pc + 5].type
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== builtin_type (exp->gdbarch)->builtin_char
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&& exp->language_defn->la_language == language_c)
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{
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/* Attempt to print C character arrays using string syntax.
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Walk through the args, picking up one character from each
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of the OP_LONG expression elements. If any array element
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does not match our expection of what we should find for
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a simple string, revert back to array printing. Note that
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the last expression element is an explicit null terminator
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byte, which doesn't get printed. */
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tempstr = (char *) alloca (nargs);
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pc += 4;
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while (tem < nargs)
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{
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if (exp->elts[pc].opcode != OP_LONG
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|| exp->elts[pc + 1].type
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!= builtin_type (exp->gdbarch)->builtin_char)
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{
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/* Not a simple array of char, use regular array
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printing. */
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tem = 0;
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break;
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}
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else
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{
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tempstr[tem++] =
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longest_to_int (exp->elts[pc + 2].longconst);
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pc += 4;
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}
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}
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}
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if (tem > 0)
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{
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struct value_print_options opts;
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get_user_print_options (&opts);
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LA_PRINT_STRING (stream, builtin_type (exp->gdbarch)->builtin_char,
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(gdb_byte *) tempstr, nargs - 1, NULL, 0, &opts);
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(*pos) = pc;
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}
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else
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{
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fputs_filtered (" {", stream);
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for (tem = 0; tem < nargs; tem++)
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{
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if (tem != 0)
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{
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fputs_filtered (", ", stream);
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}
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print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
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}
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fputs_filtered ("}", stream);
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}
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return;
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case TERNOP_COND:
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if ((int) prec > (int) PREC_COMMA)
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fputs_filtered ("(", stream);
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/* Print the subexpressions, forcing parentheses
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around any binary operations within them.
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This is more parentheses than are strictly necessary,
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but it looks clearer. */
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print_subexp (exp, pos, stream, PREC_HYPER);
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fputs_filtered (" ? ", stream);
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print_subexp (exp, pos, stream, PREC_HYPER);
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fputs_filtered (" : ", stream);
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print_subexp (exp, pos, stream, PREC_HYPER);
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if ((int) prec > (int) PREC_COMMA)
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fputs_filtered (")", stream);
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return;
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case TERNOP_SLICE:
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered ("(", stream);
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print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
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fputs_filtered (opcode == TERNOP_SLICE ? " : " : " UP ", stream);
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print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
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fputs_filtered (")", stream);
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return;
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case STRUCTOP_STRUCT:
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tem = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered (".", stream);
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fputs_filtered (&exp->elts[pc + 2].string, stream);
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return;
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/* Will not occur for Modula-2. */
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case STRUCTOP_PTR:
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tem = longest_to_int (exp->elts[pc + 1].longconst);
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(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered ("->", stream);
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fputs_filtered (&exp->elts[pc + 2].string, stream);
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return;
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case STRUCTOP_MEMBER:
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered (".*", stream);
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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return;
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case STRUCTOP_MPTR:
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered ("->*", stream);
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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return;
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case BINOP_SUBSCRIPT:
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered ("[", stream);
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print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
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fputs_filtered ("]", stream);
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return;
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case UNOP_POSTINCREMENT:
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered ("++", stream);
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return;
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case UNOP_POSTDECREMENT:
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print_subexp (exp, pos, stream, PREC_SUFFIX);
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fputs_filtered ("--", stream);
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return;
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case UNOP_CAST:
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(*pos) += 2;
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered ("(", stream);
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fputs_filtered ("(", stream);
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type_print (exp->elts[pc + 1].type, "", stream, 0);
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fputs_filtered (") ", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered (")", stream);
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return;
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case UNOP_CAST_TYPE:
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered ("(", stream);
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fputs_filtered ("(", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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fputs_filtered (") ", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered (")", stream);
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return;
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case UNOP_DYNAMIC_CAST:
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case UNOP_REINTERPRET_CAST:
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fputs_filtered (opcode == UNOP_DYNAMIC_CAST ? "dynamic_cast"
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: "reinterpret_cast", stream);
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fputs_filtered ("<", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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fputs_filtered ("> (", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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fputs_filtered (")", stream);
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return;
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case UNOP_MEMVAL:
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(*pos) += 2;
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered ("(", stream);
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if (TYPE_CODE (exp->elts[pc + 1].type) == TYPE_CODE_FUNC
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&& exp->elts[pc + 3].opcode == OP_LONG)
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{
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struct value_print_options opts;
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/* We have a minimal symbol fn, probably. It's encoded
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as a UNOP_MEMVAL (function-type) of an OP_LONG (int, address).
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Swallow the OP_LONG (including both its opcodes); ignore
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its type; print the value in the type of the MEMVAL. */
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(*pos) += 4;
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val = value_at_lazy (exp->elts[pc + 1].type,
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(CORE_ADDR) exp->elts[pc + 5].longconst);
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get_no_prettyformat_print_options (&opts);
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value_print (val, stream, &opts);
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}
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else
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{
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fputs_filtered ("{", stream);
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type_print (exp->elts[pc + 1].type, "", stream, 0);
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fputs_filtered ("} ", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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}
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered (")", stream);
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return;
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case UNOP_MEMVAL_TYPE:
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered ("(", stream);
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fputs_filtered ("{", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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fputs_filtered ("} ", stream);
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print_subexp (exp, pos, stream, PREC_PREFIX);
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if ((int) prec > (int) PREC_PREFIX)
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fputs_filtered (")", stream);
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return;
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case BINOP_ASSIGN_MODIFY:
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opcode = exp->elts[pc + 1].opcode;
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(*pos) += 2;
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myprec = PREC_ASSIGN;
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assoc = 1;
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assign_modify = 1;
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op_str = "???";
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for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
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if (op_print_tab[tem].opcode == opcode)
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{
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op_str = op_print_tab[tem].string;
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break;
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}
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if (op_print_tab[tem].opcode != opcode)
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/* Not found; don't try to keep going because we don't know how
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to interpret further elements. */
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error (_("Invalid expression"));
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break;
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|
|
/* C++ ops */
|
|
|
|
case OP_THIS:
|
|
++(*pos);
|
|
if (exp->language_defn->la_name_of_this)
|
|
fputs_filtered (exp->language_defn->la_name_of_this, stream);
|
|
else
|
|
fprintf_filtered (stream, _("<language %s has no 'this'>"),
|
|
exp->language_defn->la_name);
|
|
return;
|
|
|
|
/* Modula-2 ops */
|
|
|
|
case MULTI_SUBSCRIPT:
|
|
(*pos) += 2;
|
|
nargs = longest_to_int (exp->elts[pc + 1].longconst);
|
|
print_subexp (exp, pos, stream, PREC_SUFFIX);
|
|
fprintf_unfiltered (stream, " [");
|
|
for (tem = 0; tem < nargs; tem++)
|
|
{
|
|
if (tem != 0)
|
|
fprintf_unfiltered (stream, ", ");
|
|
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
|
|
}
|
|
fprintf_unfiltered (stream, "]");
|
|
return;
|
|
|
|
case BINOP_VAL:
|
|
(*pos) += 2;
|
|
fprintf_unfiltered (stream, "VAL(");
|
|
type_print (exp->elts[pc + 1].type, "", stream, 0);
|
|
fprintf_unfiltered (stream, ",");
|
|
print_subexp (exp, pos, stream, PREC_PREFIX);
|
|
fprintf_unfiltered (stream, ")");
|
|
return;
|
|
|
|
case TYPE_INSTANCE:
|
|
{
|
|
LONGEST count = exp->elts[pc + 1].longconst;
|
|
|
|
/* The COUNT. */
|
|
(*pos)++;
|
|
fputs_unfiltered ("TypesInstance(", stream);
|
|
while (count-- > 0)
|
|
{
|
|
type_print (exp->elts[(*pos)++].type, "", stream, 0);
|
|
if (count > 0)
|
|
fputs_unfiltered (",", stream);
|
|
}
|
|
fputs_unfiltered (",", stream);
|
|
/* Ending COUNT and ending TYPE_INSTANCE. */
|
|
(*pos) += 2;
|
|
print_subexp (exp, pos, stream, PREC_PREFIX);
|
|
fputs_unfiltered (")", stream);
|
|
return;
|
|
}
|
|
|
|
case OP_RANGE:
|
|
{
|
|
enum range_type range_type;
|
|
|
|
range_type = (enum range_type)
|
|
longest_to_int (exp->elts[pc + 1].longconst);
|
|
*pos += 2;
|
|
|
|
fputs_filtered ("RANGE(", stream);
|
|
if (range_type == HIGH_BOUND_DEFAULT
|
|
|| range_type == NONE_BOUND_DEFAULT)
|
|
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
|
|
fputs_filtered ("..", stream);
|
|
if (range_type == LOW_BOUND_DEFAULT
|
|
|| range_type == NONE_BOUND_DEFAULT)
|
|
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
|
|
fputs_filtered (")", stream);
|
|
return;
|
|
}
|
|
|
|
/* Default ops */
|
|
|
|
default:
|
|
op_str = "???";
|
|
for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
|
|
if (op_print_tab[tem].opcode == opcode)
|
|
{
|
|
op_str = op_print_tab[tem].string;
|
|
myprec = op_print_tab[tem].precedence;
|
|
assoc = op_print_tab[tem].right_assoc;
|
|
break;
|
|
}
|
|
if (op_print_tab[tem].opcode != opcode)
|
|
/* Not found; don't try to keep going because we don't know how
|
|
to interpret further elements. For example, this happens
|
|
if opcode is OP_TYPE. */
|
|
error (_("Invalid expression"));
|
|
}
|
|
|
|
/* Note that PREC_BUILTIN will always emit parentheses. */
|
|
if ((int) myprec < (int) prec)
|
|
fputs_filtered ("(", stream);
|
|
if ((int) opcode > (int) BINOP_END)
|
|
{
|
|
if (assoc)
|
|
{
|
|
/* Unary postfix operator. */
|
|
print_subexp (exp, pos, stream, PREC_SUFFIX);
|
|
fputs_filtered (op_str, stream);
|
|
}
|
|
else
|
|
{
|
|
/* Unary prefix operator. */
|
|
fputs_filtered (op_str, stream);
|
|
if (myprec == PREC_BUILTIN_FUNCTION)
|
|
fputs_filtered ("(", stream);
|
|
print_subexp (exp, pos, stream, PREC_PREFIX);
|
|
if (myprec == PREC_BUILTIN_FUNCTION)
|
|
fputs_filtered (")", stream);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Binary operator. */
|
|
/* Print left operand.
|
|
If operator is right-associative,
|
|
increment precedence for this operand. */
|
|
print_subexp (exp, pos, stream,
|
|
(enum precedence) ((int) myprec + assoc));
|
|
/* Print the operator itself. */
|
|
if (assign_modify)
|
|
fprintf_filtered (stream, " %s= ", op_str);
|
|
else if (op_str[0] == ',')
|
|
fprintf_filtered (stream, "%s ", op_str);
|
|
else
|
|
fprintf_filtered (stream, " %s ", op_str);
|
|
/* Print right operand.
|
|
If operator is left-associative,
|
|
increment precedence for this operand. */
|
|
print_subexp (exp, pos, stream,
|
|
(enum precedence) ((int) myprec + !assoc));
|
|
}
|
|
|
|
if ((int) myprec < (int) prec)
|
|
fputs_filtered (")", stream);
|
|
}
|
|
|
|
/* Return the operator corresponding to opcode OP as
|
|
a string. NULL indicates that the opcode was not found in the
|
|
current language table. */
|
|
const char *
|
|
op_string (enum exp_opcode op)
|
|
{
|
|
int tem;
|
|
const struct op_print *op_print_tab;
|
|
|
|
op_print_tab = current_language->la_op_print_tab;
|
|
for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
|
|
if (op_print_tab[tem].opcode == op)
|
|
return op_print_tab[tem].string;
|
|
return NULL;
|
|
}
|
|
|
|
/* Support for dumping the raw data from expressions in a human readable
|
|
form. */
|
|
|
|
static int dump_subexp_body (struct expression *exp, struct ui_file *, int);
|
|
|
|
/* Name for OPCODE, when it appears in expression EXP. */
|
|
|
|
const char *
|
|
op_name (struct expression *exp, enum exp_opcode opcode)
|
|
{
|
|
return exp->language_defn->la_exp_desc->op_name (opcode);
|
|
}
|
|
|
|
/* Default name for the standard operator OPCODE (i.e., one defined in
|
|
the definition of enum exp_opcode). */
|
|
|
|
const char *
|
|
op_name_standard (enum exp_opcode opcode)
|
|
{
|
|
switch (opcode)
|
|
{
|
|
default:
|
|
{
|
|
static char buf[30];
|
|
|
|
xsnprintf (buf, sizeof (buf), "<unknown %d>", opcode);
|
|
return buf;
|
|
}
|
|
#define OP(name) \
|
|
case name: \
|
|
return #name ;
|
|
#include "std-operator.def"
|
|
#undef OP
|
|
}
|
|
}
|
|
|
|
/* Print a raw dump of expression EXP to STREAM.
|
|
NOTE, if non-NULL, is printed as extra explanatory text. */
|
|
|
|
void
|
|
dump_raw_expression (struct expression *exp, struct ui_file *stream,
|
|
const char *note)
|
|
{
|
|
int elt;
|
|
char *eltscan;
|
|
int eltsize;
|
|
|
|
fprintf_filtered (stream, "Dump of expression @ ");
|
|
gdb_print_host_address (exp, stream);
|
|
if (note)
|
|
fprintf_filtered (stream, ", %s:", note);
|
|
fprintf_filtered (stream, "\n\tLanguage %s, %d elements, %ld bytes each.\n",
|
|
exp->language_defn->la_name, exp->nelts,
|
|
(long) sizeof (union exp_element));
|
|
fprintf_filtered (stream, "\t%5s %20s %16s %s\n", "Index", "Opcode",
|
|
"Hex Value", "String Value");
|
|
for (elt = 0; elt < exp->nelts; elt++)
|
|
{
|
|
fprintf_filtered (stream, "\t%5d ", elt);
|
|
|
|
const char *opcode_name = op_name (exp, exp->elts[elt].opcode);
|
|
fprintf_filtered (stream, "%20s ", opcode_name);
|
|
|
|
print_longest (stream, 'd', 0, exp->elts[elt].longconst);
|
|
fprintf_filtered (stream, " ");
|
|
|
|
for (eltscan = (char *) &exp->elts[elt],
|
|
eltsize = sizeof (union exp_element);
|
|
eltsize-- > 0;
|
|
eltscan++)
|
|
{
|
|
fprintf_filtered (stream, "%c",
|
|
isprint (*eltscan) ? (*eltscan & 0xFF) : '.');
|
|
}
|
|
fprintf_filtered (stream, "\n");
|
|
}
|
|
}
|
|
|
|
/* Dump the subexpression of prefix expression EXP whose operator is at
|
|
position ELT onto STREAM. Returns the position of the next
|
|
subexpression in EXP. */
|
|
|
|
int
|
|
dump_subexp (struct expression *exp, struct ui_file *stream, int elt)
|
|
{
|
|
static int indent = 0;
|
|
int i;
|
|
|
|
fprintf_filtered (stream, "\n");
|
|
fprintf_filtered (stream, "\t%5d ", elt);
|
|
|
|
for (i = 1; i <= indent; i++)
|
|
fprintf_filtered (stream, " ");
|
|
indent += 2;
|
|
|
|
fprintf_filtered (stream, "%-20s ", op_name (exp, exp->elts[elt].opcode));
|
|
|
|
elt = dump_subexp_body (exp, stream, elt);
|
|
|
|
indent -= 2;
|
|
|
|
return elt;
|
|
}
|
|
|
|
/* Dump the operands of prefix expression EXP whose opcode is at
|
|
position ELT onto STREAM. Returns the position of the next
|
|
subexpression in EXP. */
|
|
|
|
static int
|
|
dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt)
|
|
{
|
|
return exp->language_defn->la_exp_desc->dump_subexp_body (exp, stream, elt);
|
|
}
|
|
|
|
/* Default value for subexp_body in exp_descriptor vector. */
|
|
|
|
int
|
|
dump_subexp_body_standard (struct expression *exp,
|
|
struct ui_file *stream, int elt)
|
|
{
|
|
int opcode = exp->elts[elt++].opcode;
|
|
|
|
switch (opcode)
|
|
{
|
|
case TERNOP_COND:
|
|
case TERNOP_SLICE:
|
|
elt = dump_subexp (exp, stream, elt);
|
|
/* FALL THROUGH */
|
|
case BINOP_ADD:
|
|
case BINOP_SUB:
|
|
case BINOP_MUL:
|
|
case BINOP_DIV:
|
|
case BINOP_REM:
|
|
case BINOP_MOD:
|
|
case BINOP_LSH:
|
|
case BINOP_RSH:
|
|
case BINOP_LOGICAL_AND:
|
|
case BINOP_LOGICAL_OR:
|
|
case BINOP_BITWISE_AND:
|
|
case BINOP_BITWISE_IOR:
|
|
case BINOP_BITWISE_XOR:
|
|
case BINOP_EQUAL:
|
|
case BINOP_NOTEQUAL:
|
|
case BINOP_LESS:
|
|
case BINOP_GTR:
|
|
case BINOP_LEQ:
|
|
case BINOP_GEQ:
|
|
case BINOP_REPEAT:
|
|
case BINOP_ASSIGN:
|
|
case BINOP_COMMA:
|
|
case BINOP_SUBSCRIPT:
|
|
case BINOP_EXP:
|
|
case BINOP_MIN:
|
|
case BINOP_MAX:
|
|
case BINOP_INTDIV:
|
|
case BINOP_ASSIGN_MODIFY:
|
|
case BINOP_VAL:
|
|
case BINOP_CONCAT:
|
|
case BINOP_END:
|
|
case STRUCTOP_MEMBER:
|
|
case STRUCTOP_MPTR:
|
|
elt = dump_subexp (exp, stream, elt);
|
|
/* FALL THROUGH */
|
|
case UNOP_NEG:
|
|
case UNOP_LOGICAL_NOT:
|
|
case UNOP_COMPLEMENT:
|
|
case UNOP_IND:
|
|
case UNOP_ADDR:
|
|
case UNOP_PREINCREMENT:
|
|
case UNOP_POSTINCREMENT:
|
|
case UNOP_PREDECREMENT:
|
|
case UNOP_POSTDECREMENT:
|
|
case UNOP_SIZEOF:
|
|
case UNOP_PLUS:
|
|
case UNOP_CAP:
|
|
case UNOP_CHR:
|
|
case UNOP_ORD:
|
|
case UNOP_ABS:
|
|
case UNOP_FLOAT:
|
|
case UNOP_HIGH:
|
|
case UNOP_MAX:
|
|
case UNOP_MIN:
|
|
case UNOP_ODD:
|
|
case UNOP_TRUNC:
|
|
elt = dump_subexp (exp, stream, elt);
|
|
break;
|
|
case OP_LONG:
|
|
fprintf_filtered (stream, "Type @");
|
|
gdb_print_host_address (exp->elts[elt].type, stream);
|
|
fprintf_filtered (stream, " (");
|
|
type_print (exp->elts[elt].type, NULL, stream, 0);
|
|
fprintf_filtered (stream, "), value %ld (0x%lx)",
|
|
(long) exp->elts[elt + 1].longconst,
|
|
(long) exp->elts[elt + 1].longconst);
|
|
elt += 3;
|
|
break;
|
|
case OP_DOUBLE:
|
|
fprintf_filtered (stream, "Type @");
|
|
gdb_print_host_address (exp->elts[elt].type, stream);
|
|
fprintf_filtered (stream, " (");
|
|
type_print (exp->elts[elt].type, NULL, stream, 0);
|
|
fprintf_filtered (stream, "), value %g",
|
|
(double) exp->elts[elt + 1].doubleconst);
|
|
elt += 3;
|
|
break;
|
|
case OP_VAR_VALUE:
|
|
fprintf_filtered (stream, "Block @");
|
|
gdb_print_host_address (exp->elts[elt].block, stream);
|
|
fprintf_filtered (stream, ", symbol @");
|
|
gdb_print_host_address (exp->elts[elt + 1].symbol, stream);
|
|
fprintf_filtered (stream, " (%s)",
|
|
SYMBOL_PRINT_NAME (exp->elts[elt + 1].symbol));
|
|
elt += 3;
|
|
break;
|
|
case OP_VAR_MSYM_VALUE:
|
|
fprintf_filtered (stream, "Objfile @");
|
|
gdb_print_host_address (exp->elts[elt].objfile, stream);
|
|
fprintf_filtered (stream, ", msymbol @");
|
|
gdb_print_host_address (exp->elts[elt + 1].msymbol, stream);
|
|
fprintf_filtered (stream, " (%s)",
|
|
MSYMBOL_PRINT_NAME (exp->elts[elt + 1].msymbol));
|
|
elt += 3;
|
|
break;
|
|
case OP_VAR_ENTRY_VALUE:
|
|
fprintf_filtered (stream, "Entry value of symbol @");
|
|
gdb_print_host_address (exp->elts[elt].symbol, stream);
|
|
fprintf_filtered (stream, " (%s)",
|
|
SYMBOL_PRINT_NAME (exp->elts[elt].symbol));
|
|
elt += 2;
|
|
break;
|
|
case OP_LAST:
|
|
fprintf_filtered (stream, "History element %ld",
|
|
(long) exp->elts[elt].longconst);
|
|
elt += 2;
|
|
break;
|
|
case OP_REGISTER:
|
|
fprintf_filtered (stream, "Register $%s", &exp->elts[elt + 1].string);
|
|
elt += 3 + BYTES_TO_EXP_ELEM (exp->elts[elt].longconst + 1);
|
|
break;
|
|
case OP_INTERNALVAR:
|
|
fprintf_filtered (stream, "Internal var @");
|
|
gdb_print_host_address (exp->elts[elt].internalvar, stream);
|
|
fprintf_filtered (stream, " (%s)",
|
|
internalvar_name (exp->elts[elt].internalvar));
|
|
elt += 2;
|
|
break;
|
|
case OP_FUNCALL:
|
|
{
|
|
int i, nargs;
|
|
|
|
nargs = longest_to_int (exp->elts[elt].longconst);
|
|
|
|
fprintf_filtered (stream, "Number of args: %d", nargs);
|
|
elt += 2;
|
|
|
|
for (i = 1; i <= nargs + 1; i++)
|
|
elt = dump_subexp (exp, stream, elt);
|
|
}
|
|
break;
|
|
case OP_ARRAY:
|
|
{
|
|
int lower, upper;
|
|
int i;
|
|
|
|
lower = longest_to_int (exp->elts[elt].longconst);
|
|
upper = longest_to_int (exp->elts[elt + 1].longconst);
|
|
|
|
fprintf_filtered (stream, "Bounds [%d:%d]", lower, upper);
|
|
elt += 3;
|
|
|
|
for (i = 1; i <= upper - lower + 1; i++)
|
|
elt = dump_subexp (exp, stream, elt);
|
|
}
|
|
break;
|
|
case UNOP_DYNAMIC_CAST:
|
|
case UNOP_REINTERPRET_CAST:
|
|
case UNOP_CAST_TYPE:
|
|
case UNOP_MEMVAL_TYPE:
|
|
fprintf_filtered (stream, " (");
|
|
elt = dump_subexp (exp, stream, elt);
|
|
fprintf_filtered (stream, ")");
|
|
elt = dump_subexp (exp, stream, elt);
|
|
break;
|
|
case UNOP_MEMVAL:
|
|
case UNOP_CAST:
|
|
fprintf_filtered (stream, "Type @");
|
|
gdb_print_host_address (exp->elts[elt].type, stream);
|
|
fprintf_filtered (stream, " (");
|
|
type_print (exp->elts[elt].type, NULL, stream, 0);
|
|
fprintf_filtered (stream, ")");
|
|
elt = dump_subexp (exp, stream, elt + 2);
|
|
break;
|
|
case OP_TYPE:
|
|
fprintf_filtered (stream, "Type @");
|
|
gdb_print_host_address (exp->elts[elt].type, stream);
|
|
fprintf_filtered (stream, " (");
|
|
type_print (exp->elts[elt].type, NULL, stream, 0);
|
|
fprintf_filtered (stream, ")");
|
|
elt += 2;
|
|
break;
|
|
case OP_TYPEOF:
|
|
case OP_DECLTYPE:
|
|
fprintf_filtered (stream, "Typeof (");
|
|
elt = dump_subexp (exp, stream, elt);
|
|
fprintf_filtered (stream, ")");
|
|
break;
|
|
case OP_TYPEID:
|
|
fprintf_filtered (stream, "typeid (");
|
|
elt = dump_subexp (exp, stream, elt);
|
|
fprintf_filtered (stream, ")");
|
|
break;
|
|
case STRUCTOP_STRUCT:
|
|
case STRUCTOP_PTR:
|
|
{
|
|
char *elem_name;
|
|
int len;
|
|
|
|
len = longest_to_int (exp->elts[elt].longconst);
|
|
elem_name = &exp->elts[elt + 1].string;
|
|
|
|
fprintf_filtered (stream, "Element name: `%.*s'", len, elem_name);
|
|
elt = dump_subexp (exp, stream, elt + 3 + BYTES_TO_EXP_ELEM (len + 1));
|
|
}
|
|
break;
|
|
case OP_SCOPE:
|
|
{
|
|
char *elem_name;
|
|
int len;
|
|
|
|
fprintf_filtered (stream, "Type @");
|
|
gdb_print_host_address (exp->elts[elt].type, stream);
|
|
fprintf_filtered (stream, " (");
|
|
type_print (exp->elts[elt].type, NULL, stream, 0);
|
|
fprintf_filtered (stream, ") ");
|
|
|
|
len = longest_to_int (exp->elts[elt + 1].longconst);
|
|
elem_name = &exp->elts[elt + 2].string;
|
|
|
|
fprintf_filtered (stream, "Field name: `%.*s'", len, elem_name);
|
|
elt += 4 + BYTES_TO_EXP_ELEM (len + 1);
|
|
}
|
|
break;
|
|
case TYPE_INSTANCE:
|
|
{
|
|
LONGEST len;
|
|
|
|
len = exp->elts[elt++].longconst;
|
|
fprintf_filtered (stream, "%s TypeInstance: ", plongest (len));
|
|
while (len-- > 0)
|
|
{
|
|
fprintf_filtered (stream, "Type @");
|
|
gdb_print_host_address (exp->elts[elt].type, stream);
|
|
fprintf_filtered (stream, " (");
|
|
type_print (exp->elts[elt].type, NULL, stream, 0);
|
|
fprintf_filtered (stream, ")");
|
|
elt++;
|
|
if (len > 0)
|
|
fputs_filtered (", ", stream);
|
|
}
|
|
/* Ending LEN and ending TYPE_INSTANCE. */
|
|
elt += 2;
|
|
elt = dump_subexp (exp, stream, elt);
|
|
}
|
|
break;
|
|
case OP_STRING:
|
|
{
|
|
LONGEST len = exp->elts[elt].longconst;
|
|
LONGEST type = exp->elts[elt + 1].longconst;
|
|
|
|
fprintf_filtered (stream, "Language-specific string type: %s",
|
|
plongest (type));
|
|
|
|
/* Skip length. */
|
|
elt += 1;
|
|
|
|
/* Skip string content. */
|
|
elt += BYTES_TO_EXP_ELEM (len);
|
|
|
|
/* Skip length and ending OP_STRING. */
|
|
elt += 2;
|
|
}
|
|
break;
|
|
case OP_RANGE:
|
|
{
|
|
enum range_type range_type;
|
|
|
|
range_type = (enum range_type)
|
|
longest_to_int (exp->elts[elt].longconst);
|
|
elt += 2;
|
|
|
|
switch (range_type)
|
|
{
|
|
case BOTH_BOUND_DEFAULT:
|
|
fputs_filtered ("Range '..'", stream);
|
|
break;
|
|
case LOW_BOUND_DEFAULT:
|
|
fputs_filtered ("Range '..EXP'", stream);
|
|
break;
|
|
case HIGH_BOUND_DEFAULT:
|
|
fputs_filtered ("Range 'EXP..'", stream);
|
|
break;
|
|
case NONE_BOUND_DEFAULT:
|
|
fputs_filtered ("Range 'EXP..EXP'", stream);
|
|
break;
|
|
default:
|
|
fputs_filtered ("Invalid Range!", stream);
|
|
break;
|
|
}
|
|
|
|
if (range_type == HIGH_BOUND_DEFAULT
|
|
|| range_type == NONE_BOUND_DEFAULT)
|
|
elt = dump_subexp (exp, stream, elt);
|
|
if (range_type == LOW_BOUND_DEFAULT
|
|
|| range_type == NONE_BOUND_DEFAULT)
|
|
elt = dump_subexp (exp, stream, elt);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
case OP_NULL:
|
|
case MULTI_SUBSCRIPT:
|
|
case OP_F77_UNDETERMINED_ARGLIST:
|
|
case OP_COMPLEX:
|
|
case OP_BOOL:
|
|
case OP_M2_STRING:
|
|
case OP_THIS:
|
|
case OP_NAME:
|
|
fprintf_filtered (stream, "Unknown format");
|
|
}
|
|
|
|
return elt;
|
|
}
|
|
|
|
void
|
|
dump_prefix_expression (struct expression *exp, struct ui_file *stream)
|
|
{
|
|
int elt;
|
|
|
|
fprintf_filtered (stream, "Dump of expression @ ");
|
|
gdb_print_host_address (exp, stream);
|
|
fputs_filtered (", after conversion to prefix form:\nExpression: `", stream);
|
|
print_expression (exp, stream);
|
|
fprintf_filtered (stream, "'\n\tLanguage %s, %d elements, %ld bytes each.\n",
|
|
exp->language_defn->la_name, exp->nelts,
|
|
(long) sizeof (union exp_element));
|
|
fputs_filtered ("\n", stream);
|
|
|
|
for (elt = 0; elt < exp->nelts;)
|
|
elt = dump_subexp (exp, stream, elt);
|
|
fputs_filtered ("\n", stream);
|
|
}
|