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/* Header file for GDB compile command and supporting functions.
Copyright (C) 2014-2018 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
#ifndef GDB_COMPILE_INTERNAL_H
#define GDB_COMPILE_INTERNAL_H
#include "hashtab.h"
#include "gcc-c-interface.h"
#include "common/enum-flags.h"
/* enum-flags wrapper. */
DEF_ENUM_FLAGS_TYPE (enum gcc_qualifiers, gcc_qualifiers_flags);
/* Debugging flag for the "compile" family of commands. */
extern int compile_debug;
struct block;
/* An object of this type holds state associated with a given
compilation job. */
struct compile_instance
{
/* The GCC front end. */
struct gcc_base_context *fe;
/* The "scope" of this compilation. */
enum compile_i_scope_types scope;
/* The block in which an expression is being parsed. */
const struct block *block;
/* Specify "-std=gnu11", "-std=gnu++11" or similar. These options are put
after CU's DW_AT_producer compilation options to override them. */
const char *gcc_target_options;
/* How to destroy this object. */
void (*destroy) (struct compile_instance *);
};
/* A subclass of compile_instance that is specific to the C front
end. */
struct compile_c_instance
{
/* Base class. Note that the base class vtable actually points to a
gcc_c_fe_vtable. */
struct compile_instance base;
/* Map from gdb types to gcc types. */
htab_t type_map;
/* Map from gdb symbols to gcc error messages to emit. */
htab_t symbol_err_map;
};
/* A helper macro that takes a compile_c_instance and returns its
corresponding gcc_c_context. */
#define C_CTX(I) ((struct gcc_c_context *) ((I)->base.fe))
/* Define header and footers for different scopes. */
/* A simple scope just declares a function named "_gdb_expr", takes no
arguments and returns no value. */
#define COMPILE_I_SIMPLE_REGISTER_STRUCT_TAG "__gdb_regs"
#define COMPILE_I_SIMPLE_REGISTER_ARG_NAME "__regs"
#define COMPILE_I_SIMPLE_REGISTER_DUMMY "_dummy"
#define COMPILE_I_PRINT_OUT_ARG_TYPE "void *"
#define COMPILE_I_PRINT_OUT_ARG "__gdb_out_param"
#define COMPILE_I_EXPR_VAL "__gdb_expr_val"
#define COMPILE_I_EXPR_PTR_TYPE "__gdb_expr_ptr_type"
/* Call gdbarch_register_name (GDBARCH, REGNUM) and convert its result
to a form suitable for the compiler source. The register names
should not clash with inferior defined macros. */
extern std::string compile_register_name_mangled (struct gdbarch *gdbarch,
int regnum);
/* Convert compiler source register name to register number of
GDBARCH. Returned value is always >= 0, function throws an error
for non-matching REG_NAME. */
extern int compile_register_name_demangle (struct gdbarch *gdbarch,
const char *reg_name);
/* Convert a gdb type, TYPE, to a GCC type. CONTEXT is used to do the
actual conversion. The new GCC type is returned. */
struct type;
extern gcc_type convert_type (struct compile_c_instance *context,
struct type *type);
/* A callback suitable for use as the GCC C symbol oracle. */
extern gcc_c_oracle_function gcc_convert_symbol;
/* A callback suitable for use as the GCC C address oracle. */
extern gcc_c_symbol_address_function gcc_symbol_address;
/* Instantiate a GDB object holding state for the GCC context FE. The
new object is returned. */
extern struct compile_instance *new_compile_instance (struct gcc_c_context *fe);
/* Emit code to compute the address for all the local variables in
scope at PC in BLOCK. Returns a malloc'd vector, indexed by gdb
register number, where each element indicates if the corresponding
register is needed to compute a local variable. */
extern unsigned char *generate_c_for_variable_locations
(struct compile_c_instance *compiler,
string_file &stream,
struct gdbarch *gdbarch,
const struct block *block,
CORE_ADDR pc);
/* Get the GCC mode attribute value for a given type size. */
extern const char *c_get_mode_for_size (int size);
/* Given a dynamic property, return a name that is used to represent
its size. The contents of the resulting string will be the same
each time for each call with the same argument. */
struct dynamic_prop;
extern std::string c_get_range_decl_name (const struct dynamic_prop *prop);
/* Type used to hold and pass around the source and object file names
to use for compilation. */
class compile_file_names
{
public:
compile_file_names (std::string source_file, std::string object_file)
: m_source_file (source_file), m_object_file (object_file)
{}
/* Provide read-only views only. Return 'const char *' instead of
std::string to avoid having to use c_str() everywhere in client
code. */
const char *source_file () const
{ return m_source_file.c_str (); }
const char *object_file () const
{ return m_object_file.c_str (); }
private:
/* Storage for the file names. */
std::string m_source_file;
std::string m_object_file;
};
#endif /* GDB_COMPILE_INTERNAL_H */
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