/* C language support routines for GDB, the GNU debugger.
- Copyright (C) 1992-2020 Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include <ctype.h>
#include "gdbcore.h"
#include "gdbarch.h"
-
-class compile_instance;
+#include "compile/compile-internal.h"
+#include "c-exp.h"
/* Given a C string type, STR_TYPE, return the corresponding target
character set name. */
{
const char *encoding;
- classify_type (type, get_type_arch (type), &encoding);
+ classify_type (type, type->arch (), &encoding);
generic_emit_char (c, type, stream, quoter, encoding);
}
{
c_string_type str_type;
- str_type = classify_type (type, get_type_arch (type), NULL);
+ str_type = classify_type (type, type->arch (), NULL);
switch (str_type)
{
case C_CHAR:
const char *type_encoding;
const char *encoding;
- str_type = (classify_type (type, get_type_arch (type), &type_encoding)
+ str_type = (classify_type (type, type->arch (), &type_encoding)
& ~C_CHAR);
switch (str_type)
{
if (! c_textual_element_type (element_type, 0))
goto error;
- classify_type (element_type, get_type_arch (element_type), charset);
+ classify_type (element_type, element_type->arch (), charset);
width = TYPE_LENGTH (element_type);
/* If the string lives in GDB's memory instead of the inferior's,
}
}
-/* Expression evaluator for the C language family. Most operations
- are delegated to evaluate_subexp_standard; see that function for a
- description of the arguments. */
+namespace expr
+{
-struct value *
-evaluate_subexp_c (struct type *expect_type, struct expression *exp,
- int *pos, enum noside noside)
+value *
+c_string_operation::evaluate (struct type *expect_type,
+ struct expression *exp,
+ enum noside noside)
{
- enum exp_opcode op = exp->elts[*pos].opcode;
+ struct type *type;
+ struct value *result;
+ c_string_type dest_type;
+ const char *dest_charset;
+ int satisfy_expected = 0;
+
+ auto_obstack output;
- switch (op)
+ dest_type = std::get<0> (m_storage);
+
+ switch (dest_type & ~C_CHAR)
{
- case OP_STRING:
- {
- int oplen, limit;
- struct type *type;
- struct value *result;
- c_string_type dest_type;
- const char *dest_charset;
- int satisfy_expected = 0;
-
- auto_obstack output;
-
- ++*pos;
- oplen = longest_to_int (exp->elts[*pos].longconst);
-
- ++*pos;
- limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1);
- dest_type = ((enum c_string_type_values)
- longest_to_int (exp->elts[*pos].longconst));
- switch (dest_type & ~C_CHAR)
- {
- case C_STRING:
- type = language_string_char_type (exp->language_defn,
- exp->gdbarch);
- break;
- case C_WIDE_STRING:
- type = lookup_typename (exp->language_defn, "wchar_t", NULL, 0);
- break;
- case C_STRING_16:
- type = lookup_typename (exp->language_defn, "char16_t", NULL, 0);
- break;
- case C_STRING_32:
- type = lookup_typename (exp->language_defn, "char32_t", NULL, 0);
- break;
- default:
- internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
- }
-
- /* Ensure TYPE_LENGTH is valid for TYPE. */
- check_typedef (type);
-
- /* If the caller expects an array of some integral type,
- satisfy them. If something odder is expected, rely on the
- caller to cast. */
- if (expect_type && expect_type->code () == TYPE_CODE_ARRAY)
- {
- struct type *element_type
- = check_typedef (TYPE_TARGET_TYPE (expect_type));
-
- if (element_type->code () == TYPE_CODE_INT
- || element_type->code () == TYPE_CODE_CHAR)
- {
- type = element_type;
- satisfy_expected = 1;
- }
- }
-
- dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
-
- ++*pos;
- while (*pos < limit)
- {
- int len;
-
- len = longest_to_int (exp->elts[*pos].longconst);
-
- ++*pos;
- if (noside != EVAL_SKIP)
- parse_one_string (&output, &exp->elts[*pos].string, len,
- dest_charset, type);
- *pos += BYTES_TO_EXP_ELEM (len);
- }
-
- /* Skip the trailing length and opcode. */
- *pos += 2;
-
- if (noside == EVAL_SKIP)
- {
- /* Return a dummy value of the appropriate type. */
- if (expect_type != NULL)
- result = allocate_value (expect_type);
- else if ((dest_type & C_CHAR) != 0)
- result = allocate_value (type);
- else
- result = value_cstring ("", 0, type);
- return result;
- }
-
- if ((dest_type & C_CHAR) != 0)
- {
- LONGEST value;
-
- if (obstack_object_size (&output) != TYPE_LENGTH (type))
- error (_("Could not convert character "
- "constant to target character set"));
- value = unpack_long (type, (gdb_byte *) obstack_base (&output));
- result = value_from_longest (type, value);
- }
- else
- {
- int i;
-
- /* Write the terminating character. */
- for (i = 0; i < TYPE_LENGTH (type); ++i)
- obstack_1grow (&output, 0);
-
- if (satisfy_expected)
- {
- LONGEST low_bound, high_bound;
- int element_size = TYPE_LENGTH (type);
-
- if (!get_discrete_bounds (expect_type->index_type (),
- &low_bound, &high_bound))
- {
- low_bound = 0;
- high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1;
- }
- if (obstack_object_size (&output) / element_size
- > (high_bound - low_bound + 1))
- error (_("Too many array elements"));
-
- result = allocate_value (expect_type);
- memcpy (value_contents_raw (result), obstack_base (&output),
- obstack_object_size (&output));
- }
- else
- result = value_cstring ((const char *) obstack_base (&output),
- obstack_object_size (&output),
- type);
- }
- return result;
- }
+ case C_STRING:
+ type = language_string_char_type (exp->language_defn,
+ exp->gdbarch);
break;
-
- default:
+ case C_WIDE_STRING:
+ type = lookup_typename (exp->language_defn, "wchar_t", NULL, 0);
break;
+ case C_STRING_16:
+ type = lookup_typename (exp->language_defn, "char16_t", NULL, 0);
+ break;
+ case C_STRING_32:
+ type = lookup_typename (exp->language_defn, "char32_t", NULL, 0);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__, _("unhandled c_string_type"));
+ }
+
+ /* Ensure TYPE_LENGTH is valid for TYPE. */
+ check_typedef (type);
+
+ /* If the caller expects an array of some integral type,
+ satisfy them. If something odder is expected, rely on the
+ caller to cast. */
+ if (expect_type && expect_type->code () == TYPE_CODE_ARRAY)
+ {
+ struct type *element_type
+ = check_typedef (TYPE_TARGET_TYPE (expect_type));
+
+ if (element_type->code () == TYPE_CODE_INT
+ || element_type->code () == TYPE_CODE_CHAR)
+ {
+ type = element_type;
+ satisfy_expected = 1;
+ }
+ }
+
+ dest_charset = charset_for_string_type (dest_type, exp->gdbarch);
+
+ for (const std::string &item : std::get<1> (m_storage))
+ parse_one_string (&output, item.c_str (), item.size (),
+ dest_charset, type);
+
+ if ((dest_type & C_CHAR) != 0)
+ {
+ LONGEST value;
+
+ if (obstack_object_size (&output) != TYPE_LENGTH (type))
+ error (_("Could not convert character "
+ "constant to target character set"));
+ value = unpack_long (type, (gdb_byte *) obstack_base (&output));
+ result = value_from_longest (type, value);
+ }
+ else
+ {
+ int i;
+
+ /* Write the terminating character. */
+ for (i = 0; i < TYPE_LENGTH (type); ++i)
+ obstack_1grow (&output, 0);
+
+ if (satisfy_expected)
+ {
+ LONGEST low_bound, high_bound;
+ int element_size = TYPE_LENGTH (type);
+
+ if (!get_discrete_bounds (expect_type->index_type (),
+ &low_bound, &high_bound))
+ {
+ low_bound = 0;
+ high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1;
+ }
+ if (obstack_object_size (&output) / element_size
+ > (high_bound - low_bound + 1))
+ error (_("Too many array elements"));
+
+ result = allocate_value (expect_type);
+ memcpy (value_contents_raw (result), obstack_base (&output),
+ obstack_object_size (&output));
+ }
+ else
+ result = value_cstring ((const char *) obstack_base (&output),
+ obstack_object_size (&output),
+ type);
}
- return evaluate_subexp_standard (expect_type, exp, pos, noside);
+ return result;
}
+
+} /* namespace expr */
+
\f
/* See c-lang.h. */
return false;
}
-\f
-/* Table mapping opcodes into strings for printing operators
- and precedences of the operators. */
-
-const struct op_print c_op_print_tab[] =
-{
- {",", BINOP_COMMA, PREC_COMMA, 0},
- {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
- {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
- {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
- {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
- {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
- {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
- {"==", BINOP_EQUAL, PREC_EQUAL, 0},
- {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
- {"<=", BINOP_LEQ, PREC_ORDER, 0},
- {">=", BINOP_GEQ, PREC_ORDER, 0},
- {">", BINOP_GTR, PREC_ORDER, 0},
- {"<", BINOP_LESS, PREC_ORDER, 0},
- {">>", BINOP_RSH, PREC_SHIFT, 0},
- {"<<", BINOP_LSH, PREC_SHIFT, 0},
- {"+", BINOP_ADD, PREC_ADD, 0},
- {"-", BINOP_SUB, PREC_ADD, 0},
- {"*", BINOP_MUL, PREC_MUL, 0},
- {"/", BINOP_DIV, PREC_MUL, 0},
- {"%", BINOP_REM, PREC_MUL, 0},
- {"@", BINOP_REPEAT, PREC_REPEAT, 0},
- {"+", UNOP_PLUS, PREC_PREFIX, 0},
- {"-", UNOP_NEG, PREC_PREFIX, 0},
- {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
- {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
- {"*", UNOP_IND, PREC_PREFIX, 0},
- {"&", UNOP_ADDR, PREC_PREFIX, 0},
- {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
- {"alignof ", UNOP_ALIGNOF, PREC_PREFIX, 0},
- {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
- {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
- {NULL, OP_NULL, PREC_PREFIX, 0}
-};
\f
void
lai->set_bool_type (builtin->builtin_int);
}
-const struct exp_descriptor exp_descriptor_c =
-{
- print_subexp_standard,
- operator_length_standard,
- operator_check_standard,
- dump_subexp_body_standard,
- evaluate_subexp_c
-};
-
/* Class representing the C language. */
class c_language : public language_defn
}
/* See language.h. */
- compile_instance *get_compile_instance () const override
+ std::unique_ptr<compile_instance> get_compile_instance () const override
{
return c_get_compile_context ();
}
enum macro_expansion macro_expansion () const override
{ return macro_expansion_c; }
-
- /* See language.h. */
-
- const struct exp_descriptor *expression_ops () const override
- { return &exp_descriptor_c; }
-
- /* See language.h. */
-
- const struct op_print *opcode_print_table () const override
- { return c_op_print_tab; }
};
/* Single instance of the C language class. */
}
/* See language.h. */
- compile_instance *get_compile_instance () const override
+ std::unique_ptr<compile_instance> get_compile_instance () const override
{
return cplus_get_compile_context ();
}
const struct lang_varobj_ops *varobj_ops () const override
{ return &cplus_varobj_ops; }
- /* See language.h. */
-
- const struct exp_descriptor *expression_ops () const override
- { return &exp_descriptor_c; }
-
- /* See language.h. */
-
- const struct op_print *opcode_print_table () const override
- { return c_op_print_tab; }
-
protected:
/* See language.h. */
enum macro_expansion macro_expansion () const override
{ return macro_expansion_c; }
-
- /* See language.h. */
-
- const struct exp_descriptor *expression_ops () const override
- { return &exp_descriptor_c; }
-
- /* See language.h. */
-
- const struct op_print *opcode_print_table () const override
- { return c_op_print_tab; }
};
/* The single instance of the ASM language class. */
enum macro_expansion macro_expansion () const override
{ return macro_expansion_c; }
-
- /* See language.h. */
-
- const struct exp_descriptor *expression_ops () const override
- { return &exp_descriptor_c; }
-
- /* See language.h. */
-
- const struct op_print *opcode_print_table () const override
- { return c_op_print_tab; }
};
/* The single instance of the minimal language class. */
projects / deliverable / binutils-gdb.git / blobdiff