| /* Definitions and declarations for stor-layout.cc. |
| Copyright (C) 2013-2022 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC 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, or (at your option) any later |
| version. |
| |
| GCC 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 GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_STOR_LAYOUT_H |
| #define GCC_STOR_LAYOUT_H |
| |
| extern void set_min_and_max_values_for_integral_type (tree, int, signop); |
| extern void fixup_signed_type (tree); |
| extern unsigned int update_alignment_for_field (record_layout_info, tree, |
| unsigned int); |
| extern record_layout_info start_record_layout (tree); |
| extern tree bit_from_pos (tree, tree); |
| extern tree byte_from_pos (tree, tree); |
| extern void pos_from_bit (tree *, tree *, unsigned int, tree); |
| extern void normalize_offset (tree *, tree *, unsigned int); |
| extern tree rli_size_unit_so_far (record_layout_info); |
| extern tree rli_size_so_far (record_layout_info); |
| extern void normalize_rli (record_layout_info); |
| extern void place_field (record_layout_info, tree); |
| extern void compute_record_mode (tree); |
| extern void finish_bitfield_layout (tree); |
| extern void finish_record_layout (record_layout_info, int); |
| extern unsigned int element_precision (const_tree); |
| extern void finalize_size_functions (void); |
| extern void fixup_unsigned_type (tree); |
| extern void initialize_sizetypes (void); |
| |
| /* Finish up a builtin RECORD_TYPE. Give it a name and provide its |
| fields. Optionally specify an alignment, and then lay it out. */ |
| extern void finish_builtin_struct (tree, const char *, tree, tree); |
| |
| /* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node, |
| calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE |
| fields. Call this only once for any given decl node. |
| |
| Second argument is the boundary that this field can be assumed to |
| be starting at (in bits). Zero means it can be assumed aligned |
| on any boundary that may be needed. */ |
| extern void layout_decl (tree, unsigned); |
| |
| /* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT, |
| TYPE_ALIGN and TYPE_MODE fields. If called more than once on one |
| node, does nothing except for the first time. */ |
| extern void layout_type (tree); |
| |
| /* Return the least alignment in bytes required for type TYPE. */ |
| extern unsigned int min_align_of_type (tree); |
| |
| /* Construct various nodes representing fract or accum data types. */ |
| extern tree make_fract_type (int, int, int); |
| extern tree make_accum_type (int, int, int); |
| |
| #define make_signed_fract_type(P) make_fract_type (P, 0, 0) |
| #define make_unsigned_fract_type(P) make_fract_type (P, 1, 0) |
| #define make_sat_signed_fract_type(P) make_fract_type (P, 0, 1) |
| #define make_sat_unsigned_fract_type(P) make_fract_type (P, 1, 1) |
| #define make_signed_accum_type(P) make_accum_type (P, 0, 0) |
| #define make_unsigned_accum_type(P) make_accum_type (P, 1, 0) |
| #define make_sat_signed_accum_type(P) make_accum_type (P, 0, 1) |
| #define make_sat_unsigned_accum_type(P) make_accum_type (P, 1, 1) |
| |
| #define make_or_reuse_signed_fract_type(P) \ |
| make_or_reuse_fract_type (P, 0, 0) |
| #define make_or_reuse_unsigned_fract_type(P) \ |
| make_or_reuse_fract_type (P, 1, 0) |
| #define make_or_reuse_sat_signed_fract_type(P) \ |
| make_or_reuse_fract_type (P, 0, 1) |
| #define make_or_reuse_sat_unsigned_fract_type(P) \ |
| make_or_reuse_fract_type (P, 1, 1) |
| #define make_or_reuse_signed_accum_type(P) \ |
| make_or_reuse_accum_type (P, 0, 0) |
| #define make_or_reuse_unsigned_accum_type(P) \ |
| make_or_reuse_accum_type (P, 1, 0) |
| #define make_or_reuse_sat_signed_accum_type(P) \ |
| make_or_reuse_accum_type (P, 0, 1) |
| #define make_or_reuse_sat_unsigned_accum_type(P) \ |
| make_or_reuse_accum_type (P, 1, 1) |
| |
| extern tree make_signed_type (int); |
| extern tree make_unsigned_type (int); |
| |
| /* Return the mode for data of a given size SIZE and mode class CLASS. |
| If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. |
| The value is BLKmode if no other mode is found. This is like |
| mode_for_size, but is passed a tree. */ |
| extern opt_machine_mode mode_for_size_tree (const_tree, enum mode_class, int); |
| |
| extern tree bitwise_type_for_mode (machine_mode); |
| |
| /* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of |
| a previous call to layout_decl and calls it again. */ |
| extern void relayout_decl (tree); |
| |
| /* variable_size (EXP) is like save_expr (EXP) except that it |
| is for the special case of something that is part of a |
| variable size for a data type. It makes special arrangements |
| to compute the value at the right time when the data type |
| belongs to a function parameter. */ |
| extern tree variable_size (tree); |
| |
| #endif // GCC_STOR_LAYOUT_H |