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Allow netbsd target to also set structure size boundary 

From-SVN: r30234
This commit is contained in:
Nick Clifton 1999-10-28 09:28:04 +00:00 committed by Nick Clifton
parent 566047c21e
commit 723ae7c17d
4 changed files with 25 additions and 10 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
Thu Oct 28 10:00:48 1999 Nick Clifton <nickc@cygnus.com>
* config/arm/arm.c: Initialise arm_structure_size_boundary to
DEFAULT_STRUCTURE_SIZE_BOUNDARY.
* config/arm/arm.h (DEFAULT_STRUCTURE_SIZE_BOUNDARY): Define
to the value 32 if it has not already been defined.
* config/arm/netbsd.h (DEFAULT_STRUCTURE_SIZE_BOUNDARY):
Override definition in arm.h with a value of 8.
Thu Oct 28 03:12:02 1999 David Starner <dstarner98@aasaa.ofe.org>
* c-pragma.c (push_alignment): Don't check the return value

2
gcc/config/arm/arm.c
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@ -96,7 +96,7 @@ const char * target_fp_name = NULL;
/* Used to parse -mstructure_size_boundary command line option. */
const char * structure_size_string = NULL;
int arm_structure_size_boundary = 32; /* Used to be 8 */
int arm_structure_size_boundary = DEFAULT_STRUCTURE_SIZE_BOUNDARY;
/* Bit values used to identify processor capabilities. */
#define FL_CO_PROC (1 << 0) /* Has external co-processor bus */

20
gcc/config/arm/arm.h
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@ -615,15 +615,21 @@ extern int arm_is_6_or_7;
(TREE_CODE (EXP) == STRING_CST \
&& (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
/* Setting this to 32 produces more efficient code, but the value set in
previous versions of this toolchain was 8, which produces more compact
structures. The command line option -mstructure_size_boundary=<n> can
be used to change this value, for compatability with the ARM SDK however
the value should be left at 32. ARM SDT Reference Manual (ARM DUI 0020D)
page 2-20 says "Structures are aligned on word boundaries". */
#ifndef STRUCTURE_SIZE_BOUNDARY
/* Setting STRUCTURE_SIZE_BOUNDARY to 32 produces more efficient code, but the
value set in previous versions of this toolchain was 8, which produces more
compact structures. The command line option -mstructure_size_boundary=<n>
can be used to change this value. For compatability with the ARM SDK
however the value should be left at 32. ARM SDT Reference Manual (ARM DUI
0020D) page 2-20 says "Structures are aligned on word boundaries". */
#define STRUCTURE_SIZE_BOUNDARY arm_structure_size_boundary
extern int arm_structure_size_boundary;
/* This is the value used to initialise arm_structure_size_boundary. If a
particular arm target wants to change the default value it should change
the definition of this macro, not STRUCTRUE_SIZE_BOUNDARY. See netbsd.h
for an example of this. */
#ifndef DEFAULT_STRUCTURE_SIZE_BOUNDARY
#define DEFAULT_STRUCTURE_SIZE_BOUNDARY 32
#endif
/* Used when parsing command line option -mstructure_size_boundary. */

4
gcc/config/arm/netbsd.h
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@ -157,5 +157,5 @@ Boston, MA 02111-1307, USA. */
This modification is not encouraged but with the present state of the
NetBSD source tree it is currently the only solution that meets the
requirements. */
#undef STRUCTURE_SIZE_BOUNDARY
#define STRUCTURE_SIZE_BOUNDARY 8
#undef DEFAULT_STRUCTURE_SIZE_BOUNDARY
#define DEFAULT_STRUCTURE_SIZE_BOUNDARY 8