parent
7b09543e23
commit
566cdc73b6
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@ -1083,7 +1083,7 @@ convert.o: convert.c $(CONFIG_H) $(TREE_H) flags.h convert.h
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tree.o : tree.c $(CONFIG_H) $(TREE_H) flags.h function.h
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print-tree.o : print-tree.c $(CONFIG_H) $(TREE_H)
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stor-layout.o : stor-layout.c $(CONFIG_H) $(TREE_H) function.h
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stor-layout.o : stor-layout.c $(CONFIG_H) $(TREE_H) flags.h function.h
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fold-const.o : fold-const.c $(CONFIG_H) $(TREE_H) flags.h
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toplev.o : toplev.c $(CONFIG_H) $(TREE_H) $(RTL_H) flags.h input.h \
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insn-attr.h xcoffout.h defaults.h output.h
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@ -1,5 +1,5 @@
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/* Compilation switch flag definitions for GNU CC.
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Copyright (C) 1987, 1988, 1994 Free Software Foundation, Inc.
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Copyright (C) 1987, 1988, 1994, 1995 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -334,6 +334,9 @@ extern int flag_verbose_asm;
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/* -fgnu-linker specifies use of the GNU linker for initializations.
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-fno-gnu-linker says that collect will be used. */
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extern int flag_gnu_linker;
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/* Tag all structures with __attribute__(packed) */
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extern int flag_pack_struct;
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/* Other basic status info about current function. */
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@ -1,5 +1,5 @@
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/* C-compiler utilities for types and variables storage layout
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Copyright (C) 1987, 1988, 1992, 1993, 1994 Free Software Foundation, Inc.
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Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -22,6 +22,7 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include "tree.h"
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#include "flags.h"
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#include "function.h"
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#define CEIL(x,y) (((x) + (y) - 1) / (y))
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@ -241,6 +242,8 @@ layout_decl (decl, known_align)
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DECL_BIT_FIELD_TYPE (decl) = DECL_BIT_FIELD (decl) ? type : 0;
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if (maximum_field_alignment != 0)
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DECL_ALIGN (decl) = MIN (DECL_ALIGN (decl), maximum_field_alignment);
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else if (flag_pack_struct)
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DECL_ALIGN (decl) = MIN (DECL_ALIGN (decl), BITS_PER_UNIT);
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}
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if (DECL_BIT_FIELD (decl)
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@ -364,6 +367,8 @@ layout_record (rec)
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int type_align = TYPE_ALIGN (TREE_TYPE (field));
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if (maximum_field_alignment != 0)
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type_align = MIN (type_align, maximum_field_alignment);
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else if (flag_pack_struct)
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type_align = MIN (type_align, BITS_PER_UNIT);
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record_align = MAX (record_align, type_align);
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}
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@ -406,6 +411,7 @@ layout_record (rec)
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&& !DECL_PACKED (field)
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/* If #pragma pack is in effect, turn off this feature. */
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&& maximum_field_alignment == 0
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&& !flag_pack_struct
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&& !integer_zerop (DECL_SIZE (field)))
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{
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int type_align = TYPE_ALIGN (TREE_TYPE (field));
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@ -440,6 +446,8 @@ layout_record (rec)
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if (maximum_field_alignment != 0)
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type_align = MIN (type_align, maximum_field_alignment);
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else if (flag_pack_struct)
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type_align = MIN (type_align, BITS_PER_UNIT);
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/* A bit field may not span the unit of alignment of its type.
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Advance to next boundary if necessary. */
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@ -513,6 +513,9 @@ int flag_gnu_linker = 0;
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int flag_gnu_linker = 1;
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#endif
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/* Tag all structures with __attribute__(packed) */
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int flag_pack_struct = 0;
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/* Table of language-independent -f options.
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STRING is the option name. VARIABLE is the address of the variable.
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ON_VALUE is the value to store in VARIABLE
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@ -558,6 +561,7 @@ struct { char *string; int *variable; int on_value;} f_options[] =
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{"inhibit-size-directive", &flag_inhibit_size_directive, 1},
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{"verbose-asm", &flag_verbose_asm, 1},
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{"gnu-linker", &flag_gnu_linker, 1},
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{"pack-struct", &flag_pack_struct, 1},
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{"bytecode", &output_bytecode, 1}
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};
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