/* Fortran language support routines for GDB, the GNU debugger.
- Copyright (C) 1993-2017 Free Software Foundation, Inc.
+ Copyright (C) 1993-2020 Free Software Foundation, Inc.
Contributed by Motorola. Adapted from the C parser by Farooq Butt
(fmbutt@engage.sps.mot.com).
#include "parser-defs.h"
#include "language.h"
#include "varobj.h"
+#include "gdbcore.h"
#include "f-lang.h"
#include "valprint.h"
#include "value.h"
#include "cp-support.h"
#include "charset.h"
#include "c-lang.h"
+#include "target-float.h"
+#include "gdbarch.h"
+#include <math.h>
/* Local functions */
encoding = target_charset (get_type_arch (type));
break;
case 4:
- if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
+ if (type_byte_order (type) == BFD_ENDIAN_BIG)
encoding = "UTF-32BE";
else
encoding = "UTF-32LE";
static void
f_collect_symbol_completion_matches (completion_tracker &tracker,
complete_symbol_mode mode,
+ symbol_name_match_type compare_name,
const char *text, const char *word,
enum type_code code)
{
default_collect_symbol_completion_matches_break_on (tracker, mode,
+ compare_name,
text, word, ":", code);
}
+/* Special expression evaluation cases for Fortran. */
+
+static struct value *
+evaluate_subexp_f (struct type *expect_type, struct expression *exp,
+ int *pos, enum noside noside)
+{
+ struct value *arg1 = NULL, *arg2 = NULL;
+ enum exp_opcode op;
+ int pc;
+ struct type *type;
+
+ pc = *pos;
+ *pos += 1;
+ op = exp->elts[pc].opcode;
+
+ switch (op)
+ {
+ default:
+ *pos -= 1;
+ return evaluate_subexp_standard (expect_type, exp, pos, noside);
+
+ case UNOP_ABS:
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ return eval_skip_value (exp);
+ type = value_type (arg1);
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_FLT:
+ {
+ double d
+ = fabs (target_float_to_host_double (value_contents (arg1),
+ value_type (arg1)));
+ return value_from_host_double (type, d);
+ }
+ case TYPE_CODE_INT:
+ {
+ LONGEST l = value_as_long (arg1);
+ l = llabs (l);
+ return value_from_longest (type, l);
+ }
+ }
+ error (_("ABS of type %s not supported"), TYPE_SAFE_NAME (type));
+
+ case BINOP_MOD:
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ return eval_skip_value (exp);
+ type = value_type (arg1);
+ if (TYPE_CODE (type) != TYPE_CODE (value_type (arg2)))
+ error (_("non-matching types for parameters to MOD ()"));
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_FLT:
+ {
+ double d1
+ = target_float_to_host_double (value_contents (arg1),
+ value_type (arg1));
+ double d2
+ = target_float_to_host_double (value_contents (arg2),
+ value_type (arg2));
+ double d3 = fmod (d1, d2);
+ return value_from_host_double (type, d3);
+ }
+ case TYPE_CODE_INT:
+ {
+ LONGEST v1 = value_as_long (arg1);
+ LONGEST v2 = value_as_long (arg2);
+ if (v2 == 0)
+ error (_("calling MOD (N, 0) is undefined"));
+ LONGEST v3 = v1 - (v1 / v2) * v2;
+ return value_from_longest (value_type (arg1), v3);
+ }
+ }
+ error (_("MOD of type %s not supported"), TYPE_SAFE_NAME (type));
+
+ case UNOP_FORTRAN_CEILING:
+ {
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ return eval_skip_value (exp);
+ type = value_type (arg1);
+ if (TYPE_CODE (type) != TYPE_CODE_FLT)
+ error (_("argument to CEILING must be of type float"));
+ double val
+ = target_float_to_host_double (value_contents (arg1),
+ value_type (arg1));
+ val = ceil (val);
+ return value_from_host_double (type, val);
+ }
+
+ case UNOP_FORTRAN_FLOOR:
+ {
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ return eval_skip_value (exp);
+ type = value_type (arg1);
+ if (TYPE_CODE (type) != TYPE_CODE_FLT)
+ error (_("argument to FLOOR must be of type float"));
+ double val
+ = target_float_to_host_double (value_contents (arg1),
+ value_type (arg1));
+ val = floor (val);
+ return value_from_host_double (type, val);
+ }
+
+ case BINOP_FORTRAN_MODULO:
+ {
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ return eval_skip_value (exp);
+ type = value_type (arg1);
+ if (TYPE_CODE (type) != TYPE_CODE (value_type (arg2)))
+ error (_("non-matching types for parameters to MODULO ()"));
+ /* MODULO(A, P) = A - FLOOR (A / P) * P */
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_INT:
+ {
+ LONGEST a = value_as_long (arg1);
+ LONGEST p = value_as_long (arg2);
+ LONGEST result = a - (a / p) * p;
+ if (result != 0 && (a < 0) != (p < 0))
+ result += p;
+ return value_from_longest (value_type (arg1), result);
+ }
+ case TYPE_CODE_FLT:
+ {
+ double a
+ = target_float_to_host_double (value_contents (arg1),
+ value_type (arg1));
+ double p
+ = target_float_to_host_double (value_contents (arg2),
+ value_type (arg2));
+ double result = fmod (a, p);
+ if (result != 0 && (a < 0.0) != (p < 0.0))
+ result += p;
+ return value_from_host_double (type, result);
+ }
+ }
+ error (_("MODULO of type %s not supported"), TYPE_SAFE_NAME (type));
+ }
+
+ case BINOP_FORTRAN_CMPLX:
+ arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside);
+ arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ return eval_skip_value (exp);
+ type = builtin_f_type(exp->gdbarch)->builtin_complex_s16;
+ return value_literal_complex (arg1, arg2, type);
+
+ case UNOP_FORTRAN_KIND:
+ arg1 = evaluate_subexp (NULL, exp, pos, EVAL_AVOID_SIDE_EFFECTS);
+ type = value_type (arg1);
+
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_STRUCT:
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_MODULE:
+ case TYPE_CODE_FUNC:
+ error (_("argument to kind must be an intrinsic type"));
+ }
+
+ if (!TYPE_TARGET_TYPE (type))
+ return value_from_longest (builtin_type (exp->gdbarch)->builtin_int,
+ TYPE_LENGTH (type));
+ return value_from_longest (builtin_type (exp->gdbarch)->builtin_int,
+ TYPE_LENGTH (TYPE_TARGET_TYPE(type)));
+ }
+
+ /* Should be unreachable. */
+ return nullptr;
+}
+
+/* Return true if TYPE is a string. */
+
+static bool
+f_is_string_type_p (struct type *type)
+{
+ type = check_typedef (type);
+ return (TYPE_CODE (type) == TYPE_CODE_STRING
+ || (TYPE_CODE (type) == TYPE_CODE_ARRAY
+ && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CHAR));
+}
+
+/* Special expression lengths for Fortran. */
+
+static void
+operator_length_f (const struct expression *exp, int pc, int *oplenp,
+ int *argsp)
+{
+ int oplen = 1;
+ int args = 0;
+
+ switch (exp->elts[pc - 1].opcode)
+ {
+ default:
+ operator_length_standard (exp, pc, oplenp, argsp);
+ return;
+
+ case UNOP_FORTRAN_KIND:
+ case UNOP_FORTRAN_FLOOR:
+ case UNOP_FORTRAN_CEILING:
+ oplen = 1;
+ args = 1;
+ break;
+
+ case BINOP_FORTRAN_CMPLX:
+ case BINOP_FORTRAN_MODULO:
+ oplen = 1;
+ args = 2;
+ break;
+ }
+
+ *oplenp = oplen;
+ *argsp = args;
+}
+
+/* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except
+ the extra argument NAME which is the text that should be printed as the
+ name of this operation. */
+
+static void
+print_unop_subexp_f (struct expression *exp, int *pos,
+ struct ui_file *stream, enum precedence prec,
+ const char *name)
+{
+ (*pos)++;
+ fprintf_filtered (stream, "%s(", name);
+ print_subexp (exp, pos, stream, PREC_SUFFIX);
+ fputs_filtered (")", stream);
+}
+
+/* Helper for PRINT_SUBEXP_F. Arguments are as for PRINT_SUBEXP_F, except
+ the extra argument NAME which is the text that should be printed as the
+ name of this operation. */
+
+static void
+print_binop_subexp_f (struct expression *exp, int *pos,
+ struct ui_file *stream, enum precedence prec,
+ const char *name)
+{
+ (*pos)++;
+ fprintf_filtered (stream, "%s(", name);
+ print_subexp (exp, pos, stream, PREC_SUFFIX);
+ fputs_filtered (",", stream);
+ print_subexp (exp, pos, stream, PREC_SUFFIX);
+ fputs_filtered (")", stream);
+}
+
+/* Special expression printing for Fortran. */
+
+static void
+print_subexp_f (struct expression *exp, int *pos,
+ struct ui_file *stream, enum precedence prec)
+{
+ int pc = *pos;
+ enum exp_opcode op = exp->elts[pc].opcode;
+
+ switch (op)
+ {
+ default:
+ print_subexp_standard (exp, pos, stream, prec);
+ return;
+
+ case UNOP_FORTRAN_KIND:
+ print_unop_subexp_f (exp, pos, stream, prec, "KIND");
+ return;
+
+ case UNOP_FORTRAN_FLOOR:
+ print_unop_subexp_f (exp, pos, stream, prec, "FLOOR");
+ return;
+
+ case UNOP_FORTRAN_CEILING:
+ print_unop_subexp_f (exp, pos, stream, prec, "CEILING");
+ return;
+
+ case BINOP_FORTRAN_CMPLX:
+ print_binop_subexp_f (exp, pos, stream, prec, "CMPLX");
+ return;
+
+ case BINOP_FORTRAN_MODULO:
+ print_binop_subexp_f (exp, pos, stream, prec, "MODULO");
+ return;
+ }
+}
+
+/* Special expression names for Fortran. */
+
+static const char *
+op_name_f (enum exp_opcode opcode)
+{
+ switch (opcode)
+ {
+ default:
+ return op_name_standard (opcode);
+
+#define OP(name) \
+ case name: \
+ return #name ;
+#include "fortran-operator.def"
+#undef OP
+ }
+}
+
+/* Special expression dumping for Fortran. */
+
+static int
+dump_subexp_body_f (struct expression *exp,
+ struct ui_file *stream, int elt)
+{
+ int opcode = exp->elts[elt].opcode;
+ int oplen, nargs, i;
+
+ switch (opcode)
+ {
+ default:
+ return dump_subexp_body_standard (exp, stream, elt);
+
+ case UNOP_FORTRAN_KIND:
+ case UNOP_FORTRAN_FLOOR:
+ case UNOP_FORTRAN_CEILING:
+ case BINOP_FORTRAN_CMPLX:
+ case BINOP_FORTRAN_MODULO:
+ operator_length_f (exp, (elt + 1), &oplen, &nargs);
+ break;
+ }
+
+ elt += oplen;
+ for (i = 0; i < nargs; i += 1)
+ elt = dump_subexp (exp, stream, elt);
+
+ return elt;
+}
+
+/* Special expression checking for Fortran. */
+
+static int
+operator_check_f (struct expression *exp, int pos,
+ int (*objfile_func) (struct objfile *objfile,
+ void *data),
+ void *data)
+{
+ const union exp_element *const elts = exp->elts;
+
+ switch (elts[pos].opcode)
+ {
+ case UNOP_FORTRAN_KIND:
+ case UNOP_FORTRAN_FLOOR:
+ case UNOP_FORTRAN_CEILING:
+ case BINOP_FORTRAN_CMPLX:
+ case BINOP_FORTRAN_MODULO:
+ /* Any references to objfiles are held in the arguments to this
+ expression, not within the expression itself, so no additional
+ checking is required here, the outer expression iteration code
+ will take care of checking each argument. */
+ break;
+
+ default:
+ return operator_check_standard (exp, pos, objfile_func, data);
+ }
+
+ return 0;
+}
+
static const char *f_extensions[] =
{
".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
NULL
};
+/* Expression processing for Fortran. */
+static const struct exp_descriptor exp_descriptor_f =
+{
+ print_subexp_f,
+ operator_length_f,
+ operator_check_f,
+ op_name_f,
+ dump_subexp_body_f,
+ evaluate_subexp_f
+};
+
extern const struct language_defn f_language_defn =
{
"fortran",
array_column_major,
macro_expansion_no,
f_extensions,
- &exp_descriptor_standard,
+ &exp_descriptor_f,
f_parse, /* parser */
- f_yyerror, /* parser error function */
null_post_parser,
f_printchar, /* Print character constant */
f_printstr, /* function to print string constant */
f_emit_char, /* Function to print a single character */
f_print_type, /* Print a type using appropriate syntax */
- default_print_typedef, /* Print a typedef using appropriate syntax */
+ f_print_typedef, /* Print a typedef using appropriate syntax */
f_val_print, /* Print a value using appropriate syntax */
c_value_print, /* FIXME */
default_read_var_value, /* la_read_var_value */
NULL, /* Language specific skip_trampoline */
NULL, /* name_of_this */
+ false, /* la_store_sym_names_in_linkage_form_p */
cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
f_language_arch_info,
default_print_array_index,
default_pass_by_reference,
- default_get_string,
c_watch_location_expression,
- NULL, /* la_get_symbol_name_cmp */
+ cp_get_symbol_name_matcher, /* la_get_symbol_name_matcher */
iterate_over_symbols,
+ cp_search_name_hash,
&default_varobj_ops,
NULL,
NULL,
- LANG_MAGIC
+ f_is_string_type_p,
+ "(...)" /* la_struct_too_deep_ellipsis */
};
static void *
= GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
builtin_f_type->builtin_void
- = arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
+ = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
builtin_f_type->builtin_character
- = arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
+ = arch_type (gdbarch, TYPE_CODE_CHAR, TARGET_CHAR_BIT, "character");
builtin_f_type->builtin_logical_s1
= arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
= arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
"integer*2");
+ builtin_f_type->builtin_integer_s8
+ = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), 0,
+ "integer*8");
+
builtin_f_type->builtin_logical_s2
= arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
"logical*2");
builtin_f_type->builtin_real_s8
= arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
"real*8", gdbarch_double_format (gdbarch));
- builtin_f_type->builtin_real_s16
- = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
- "real*16", gdbarch_long_double_format (gdbarch));
+ auto fmt = gdbarch_floatformat_for_type (gdbarch, "real(kind=16)", 128);
+ if (fmt != nullptr)
+ builtin_f_type->builtin_real_s16
+ = arch_float_type (gdbarch, 128, "real*16", fmt);
+ else if (gdbarch_long_double_bit (gdbarch) == 128)
+ builtin_f_type->builtin_real_s16
+ = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
+ "real*16", gdbarch_long_double_format (gdbarch));
+ else
+ builtin_f_type->builtin_real_s16
+ = arch_type (gdbarch, TYPE_CODE_ERROR, 128, "real*16");
builtin_f_type->builtin_complex_s8
= arch_complex_type (gdbarch, "complex*8",
return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data);
}
+void _initialize_f_language ();
void
-_initialize_f_language (void)
+_initialize_f_language ()
{
f_type_data = gdbarch_data_register_post_init (build_fortran_types);
}
+
+/* See f-lang.h. */
+
+struct value *
+fortran_argument_convert (struct value *value, bool is_artificial)
+{
+ if (!is_artificial)
+ {
+ /* If the value is not in the inferior e.g. registers values,
+ convenience variables and user input. */
+ if (VALUE_LVAL (value) != lval_memory)
+ {
+ struct type *type = value_type (value);
+ const int length = TYPE_LENGTH (type);
+ const CORE_ADDR addr
+ = value_as_long (value_allocate_space_in_inferior (length));
+ write_memory (addr, value_contents (value), length);
+ struct value *val
+ = value_from_contents_and_address (type, value_contents (value),
+ addr);
+ return value_addr (val);
+ }
+ else
+ return value_addr (value); /* Program variables, e.g. arrays. */
+ }
+ return value;
+}
+
+/* See f-lang.h. */
+
+struct type *
+fortran_preserve_arg_pointer (struct value *arg, struct type *type)
+{
+ if (TYPE_CODE (value_type (arg)) == TYPE_CODE_PTR)
+ return value_type (arg);
+ return type;
+}
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