81028ab0e7
from a configuration file (typically including <limits.h>), or to TARGET_CHAR_BIT if CHAR_BIT is not defined. * eval.c (evaluate_subexp): Use new BYTES_TO_EXP_ELEM macro. * eval.c (evaluate_subexp): Add case for OP_BITSTRING. * expprint.c (print_subexp): Use new BYTES_TO_EXP_ELEM macro. * exppritn.c (print_subexp, dump_expression): Add case for OP_BITSTRING. * expression.h (OP_BITSTRING): New expression element type for packed bitstrings. * expression.h (EXP_ELEM_TO_BYTES, BYTES_TO_EXP_ELEM): New macros to convert between number of expression elements and bytes to store that many elements. * i960-tdep.c (leafproc_return): Use new macros to access minimal symbol name and address fields. * m88k-pinsn.c (sprint_address): Use new macros to access minimal symbol name and address fields. * nindy-tdep.c (nindy_frame_chain_valid): Use new macro to access minimal symbol address field. * parse.c (write_exp_elt, write_exp_string, prefixify_expression, parse_exp_1): Use new EXP_ELEM_TO_BYTES macro. * parse.c (write_exp_string, length_of_subexp, prefixify_expression): Use new BYTES_TO_EXP_ELEM macro. * parse.c (write_exp_bitstring): New function to write packed bitstrings into the expression element vector. * parse.c (length_of_subexp, prefixify_subexp): Add case for OP_BITSTRING. * parser-defs.h (struct stoken): Document that it is used for OP_BITSTRING as well as OP_STRING. * parser-defs.h (write_exp_bitstring): Add prototype. **** start-sanitize-chill **** * ch-exp.y (BIT_STRING_LITERAL): Change token type to sval. * ch-exp.y (NUM, PRED, SUCC, ABS, CARD, MAX, MIN, SIZE, UPPER, LOWER, LENGTH): New tokens for keywords. * ch-exp.y (chill_value_built_in_routine_call, mode_argument, upper_lower_argument, length_argument, array_mode_name, string_mode_name, variant_structure_mode_name): New non-terminals and productions. * ch-exp.y (literal): Useful production for BIT_STRING_LITERAL. * ch-exp.y (match_bitstring_literal): New lexer support function to recognize bitstring literals. * ch-exp.y (tokentab6): New token table for 6 character keywords. * ch-exp.y (tokentab5): Add LOWER, UPPER. * ch-exp.y (tokentab4): Add PRED, SUCC, CARD, SIZE. * ch-exp.y (tokentab3): Add NUM, ABS, MIN, MAX. * ch-exp.y (yylex): Check tokentab6. * ch-exp.y (yylex): Call match_bitstring_literal. **** end-sanitize-chill ****
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* Target-machine dependent code for the NINDY monitor running on the Intel 960
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Copyright (C) 1991 Free Software Foundation, Inc.
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Contributed by Intel Corporation.
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Miscellaneous NINDY-dependent routines.
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Some replace macros normally defined in "tm.h". */
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#include "defs.h"
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#include "symtab.h"
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#include "frame.h"
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/* 'start_frame' is a variable in the NINDY runtime startup routine
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that contains the frame pointer of the 'start' routine (the routine
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that calls 'main'). By reading its contents out of remote memory,
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we can tell where the frame chain ends: backtraces should halt before
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they display this frame. */
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int
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nindy_frame_chain_valid (chain, curframe)
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unsigned int chain;
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FRAME curframe;
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{
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struct symbol *sym;
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struct minimal_symbol *msymbol;
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/* crtnindy.o is an assembler module that is assumed to be linked
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* first in an i80960 executable. It contains the true entry point;
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* it performs startup up initialization and then calls 'main'.
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*
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* 'sf' is the name of a variable in crtnindy.o that is set
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* during startup to the address of the first frame.
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*
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* 'a' is the address of that variable in 80960 memory.
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*/
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static char sf[] = "start_frame";
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CORE_ADDR a;
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chain &= ~0x3f; /* Zero low 6 bits because previous frame pointers
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contain return status info in them. */
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if ( chain == 0 ){
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return 0;
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}
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sym = lookup_symbol(sf, 0, VAR_NAMESPACE, (int *)NULL,
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(struct symtab **)NULL);
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if ( sym != 0 ){
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a = sym->value.value;
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} else {
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msymbol = lookup_minimal_symbol (sf, (struct objfile *) NULL);
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if (msymbol == NULL)
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return 0;
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a = SYMBOL_VALUE_ADDRESS (msymbol);
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}
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return ( chain != read_memory_integer(a,4) );
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}
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