+2010-10-23 Nathan Froyd <froydnj@codesourcery.com>
+
+ * cppbuiltin.c (define_builtin_macros_for_type_sizes): Define
+ __BYTE_ORDER__, __ORDER_LITTLE_ENDIAN__, __ORDER_BIG_ENDIAN__, and
+ __ORDER_PDP_ENDIAN__.
+ * libgcc2.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ (struct DWstruct): Define based on __BYTE_ORDER__.
+ * config/fixed-bit.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ (struct INTstruct): Define based on __BYTE_ORDER__.
+ * config/dfp-bit.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ (LIBGCC2_FLOAT_WORDS_BIG_ENDIAN): Test __BYTE_ORDER__.
+ * system.h (LIBGCC2_WORDS_BIG_ENDIAN): Poison identifier.
+ * config/arc/arc.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/arm/arm.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/ia64/ia64.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/iq2000/iq2000.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/lm32/lm32.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/m32r/m32r.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/mcore/mcore.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/mep/mep.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/mips/mips.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/rs6000/sysv4.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/rx/rx.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/score/score.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/sh/sh.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/sparc/sparc.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * config/xtensa/xtensa.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * doc/tm.texi.in (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ * doc/tm.texi: Regenerate.
+ * doc/cpp.texi (__BYTE_ORDER__, __ORDER_LITTLE_ENDIAN__): Document.
+ (__ORDER_BIG_ENDIAN__, __ORDER_PDP_ENDIAN__): Likewise.
+
2010-10-23 Jie Zhang <jie@codesourcery.com>
PR rtl-optimization/37360
numbered. */
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#ifdef __big_endian__
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
/* Width of a word, in units (bytes). */
#define UNITS_PER_WORD 4
This is always false, even when in big-endian mode. */
#define WORDS_BIG_ENDIAN (BYTES_BIG_ENDIAN && ! TARGET_LITTLE_WORDS)
-/* LIBGCC2_WORDS_BIG_ENDIAN has to be a constant, so we define this based
- on processor pre-defineds when compiling libgcc2.c. */
-#if defined(__ARMEB__) && !defined(__ARMWEL__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
/* Define this if most significant word of doubles is the lowest numbered.
The rules are different based on whether or not we use FPA-format,
VFP-format or some other floating point co-processor's format doubles. */
#include "coretypes.h"
#include "tm.h"
-#ifndef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
-#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
+#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN \
+ (__BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__)
#endif
#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
Ex: If we define FROM_QQ and TO_SI, the conversion from QQ to SI is
generated. */
-/* Permit the tm.h file to select the endianness to use just for this
- file. This is used when the endianness is determined when the
- compiler is run. */
-
-#ifndef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
#endif
/* The following defines are based on the previous defines. */
#if defined (HINT_C_TYPE)
-#if LIBGCC2_WORDS_BIG_ENDIAN
+#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
struct INTstruct {HINT_C_TYPE high, low;};
#else
struct INTstruct {HINT_C_TYPE low, high;};
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
-#if defined(__BIG_ENDIAN__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
#define UNITS_PER_WORD 8
#define POINTER_SIZE (TARGET_ILP32 ? 32 : 64)
#define BITS_BIG_ENDIAN 0
#define BYTES_BIG_ENDIAN 1
#define WORDS_BIG_ENDIAN 1
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
#define BITS_PER_WORD 32
#define MAX_BITS_PER_WORD 64
#define UNITS_PER_WORD 4
#define BITS_BIG_ENDIAN 0
#define BYTES_BIG_ENDIAN 1
#define WORDS_BIG_ENDIAN 1
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
#define BITS_PER_UNIT 8
#define BITS_PER_WORD 32
numbered. */
#define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
-/* Define this macro if WORDS_BIG_ENDIAN is not constant. This must
- be a constant value with the same meaning as WORDS_BIG_ENDIAN,
- which will be used only when compiling libgcc2.c. Typically the
- value will be set based on preprocessor defines. */
-/*#define LIBGCC2_WORDS_BIG_ENDIAN 1*/
-
/* Width of a word, in units (bytes). */
#define UNITS_PER_WORD 4
numbered. */
#define WORDS_BIG_ENDIAN (! TARGET_LITTLE_END)
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#ifdef __MCORELE__
-#undef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
#define MAX_BITS_PER_WORD 32
/* Width of a word, in units (bytes). */
#define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN ? 0 : 1)
#define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN ? 0 : 1)
-#ifdef __LITTLE_ENDIAN__
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#endif
-
#define UNITS_PER_WORD 4
#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#if !defined(MIPSEL) && !defined(__MIPSEL__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
#define MAX_BITS_PER_WORD 64
/* Width of a word, in units (bytes). */
#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#if !defined(__LITTLE_ENDIAN__) && !defined(__sun__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
/* Define cutoff for using external functions to save floating point.
When optimizing for size, use external functions when profitable. */
#define FP_SAVE_INLINE(FIRST_REG) (optimize_size \
#define BYTES_BIG_ENDIAN TARGET_BIG_ENDIAN_DATA
#define WORDS_BIG_ENDIAN TARGET_BIG_ENDIAN_DATA
-#ifdef __RX_BIG_ENDIAN__
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
#define UNITS_PER_WORD 4
#define INT_TYPE_SIZE 32
#define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
#define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#if defined(__scorele__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#endif
-
/* Width of a word, in units (bytes). */
#define UNITS_PER_WORD 4
numbered. */
#define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0)
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#if defined(__LITTLE_ENDIAN__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#endif
-
#define MAX_BITS_PER_WORD 64
/* Width in bits of an `int'. We want just 32-bits, even if words are
numbered. */
#define WORDS_BIG_ENDIAN 1
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#if defined (__LITTLE_ENDIAN__) || defined(__LITTLE_ENDIAN_DATA__)
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#endif
-
#define MAX_BITS_PER_WORD 64
/* Width of a word, in units (bytes). */
#define EXTRA_SPECS \
{ "subtarget_cpp_spec", SUBTARGET_CPP_SPEC },
-#ifdef __XTENSA_EB__
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
-
/* Target machine storage layout */
/* Define this if most significant bit is lowest numbered
cpp_define_formatted (pfile, "__BIGGEST_ALIGNMENT__=%d",
BIGGEST_ALIGNMENT / BITS_PER_UNIT);
+ /* Define constants useful for implementing endian.h. */
+ cpp_define (pfile, "__ORDER_LITTLE_ENDIAN__=1234");
+ cpp_define (pfile, "__ORDER_BIG_ENDIAN__=4321");
+ cpp_define (pfile, "__ORDER_PDP_ENDIAN__=3412");
+
+ if (WORDS_BIG_ENDIAN == BYTES_BIG_ENDIAN)
+ cpp_define_formatted (pfile, "__BYTE_ORDER__=%s",
+ (WORDS_BIG_ENDIAN
+ ? "__ORDER_BIG_ENDIAN__"
+ : "__ORDER_LITTLE_ENDIAN__"));
+ else
+ {
+ /* Assert that we're only dealing with the PDP11 case. */
+ gcc_assert (!BYTES_BIG_ENDIAN && WORDS_BIG_ENDIAN);
+
+ cpp_define (pfile, "__BYTE_ORDER__=__ORDER_PDP_ENDIAN__");
+ }
+
/* ptr_type_node can't be used here since ptr_mode is only set when
toplev calls backend_init which is not done with -E switch. */
cpp_define_formatted (pfile, "__SIZEOF_POINTER__=%d",
@code{double}, @code{long double}, @code{size_t}, @code{wchar_t}, @code{wint_t}
and @code{ptrdiff_t}.
+@item __BYTE_ORDER__
+@itemx __ORDER_LITTLE_ENDIAN__
+@itemx __ORDER_BIG_ENDIAN__
+@itemx __ORDER_PDP_ENDIAN__
+@code{__BYTE_ORDER__} is defined to one of the values
+@code{__ORDER_LITTLE_ENDIAN__}, @code{__ORDER_BIG_ENDIAN__}, or
+@code{__ORDER_PDP_ENDIAN__} to reflect the layout of multi-byte and
+multi-word quantities in memory. If @code{__BYTE_ORDER__} is equal to
+@code{__ORDER_LITTLE_ENDIAN__} or @code{__ORDER_BIG_ENDIAN__}, then
+multi-byte and multi-word quantities are laid out identically: the
+byte (word) at the lowest address is the least significant or most
+significant byte (word) of the quantity, respectively. If
+@code{__BYTE_ORDER__} is equal to @code{__ORDER_PDP_ENDIAN__}, then
+bytes in 16-bit words are laid out in a little-endian fashion, whereas
+the 16-bit subwords of a 32-bit quantity are laid out in big-endian
+fashion.
+
+You should use these macros for testing like this:
+
+@smallexample
+/* @r{Test for a little-endian machine} */
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+@end smallexample
+
@item __DEPRECATED
This macro is defined, with value 1, when compiling a C++ source file
with warnings about deprecated constructs enabled. These warnings are
macro need not be a constant.
@end defmac
-@defmac LIBGCC2_WORDS_BIG_ENDIAN
-Define this macro if @code{WORDS_BIG_ENDIAN} is not constant. This must be a
-constant value with the same meaning as @code{WORDS_BIG_ENDIAN}, which will be
-used only when compiling @file{libgcc2.c}. Typically the value will be set
-based on preprocessor defines.
-@end defmac
-
@defmac FLOAT_WORDS_BIG_ENDIAN
Define this macro to have the value 1 if @code{DFmode}, @code{XFmode} or
@code{TFmode} floating point numbers are stored in memory with the word
macro need not be a constant.
@end defmac
-@defmac LIBGCC2_WORDS_BIG_ENDIAN
-Define this macro if @code{WORDS_BIG_ENDIAN} is not constant. This must be a
-constant value with the same meaning as @code{WORDS_BIG_ENDIAN}, which will be
-used only when compiling @file{libgcc2.c}. Typically the value will be set
-based on preprocessor defines.
-@end defmac
-
@defmac FLOAT_WORDS_BIG_ENDIAN
Define this macro to have the value 1 if @code{DFmode}, @code{XFmode} or
@code{TFmode} floating point numbers are stored in memory with the word
extern void __eprintf (const char *, const char *, unsigned int, const char *)
__attribute__ ((__noreturn__));
-/* Permit the tm.h file to select the endianness to use just for this
- file. This is used when the endianness is determined when the
- compiler is run. */
-
-#ifndef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
#endif
#define int bogus_type
/* DWstructs are pairs of Wtype values in the order determined by
- LIBGCC2_WORDS_BIG_ENDIAN. */
+ __BYTE_ORDER__. */
-#if LIBGCC2_WORDS_BIG_ENDIAN
+#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
struct DWstruct {Wtype high, low;};
#else
struct DWstruct {Wtype low, high;};
TARGET_HANDLE_OFAST TARGET_OPTION_OPTIMIZATION
/* Hooks into libgcc2. */
- #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE
+ #pragma GCC poison LIBGCC2_DOUBLE_TYPE_SIZE LIBGCC2_WORDS_BIG_ENDIAN
/* Miscellaneous macros that are no longer used. */
#pragma GCC poison USE_MAPPED_LOCATION
+2010-10-23 Nathan Froyd <froydnj@codesourcery.com>
+
+ * dconfig.h (LIBGCC2_WORDS_BIG_ENDIAN): Delete.
+ (LIBGCC2_FLOAT_WORDS_BIG_ENDIAN): Test __BYTE_ORDER__.
+
2010-09-10 Kai Tietz <kai.tietz@onevision.com>
* configure: Regenerated.
#include "coretypes.h"
#include "tm.h"
-#ifndef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
-#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
+#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN \
+ (__BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__)
#endif
#if LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
+2010-10-23 Nathan Froyd <froydnj@codesourcery.com>
+
+ * config/libbid/bid_gcc_intrinsics.h (LIBGCC2_WORDS_BIG_ENDIAN):
+ Delete.
+ (LIBGCC2_FLOAT_WORDS_BIG_ENDIAN): Test __BYTE_ORDER__.
+
2010-10-14 Nathan Froyd <froydnj@codesourcery.com>
* config/arm/bpabi.h: New file.
#include "coretypes.h"
#include "tm.h"
-#ifndef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
-#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
+#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN \
+ (__BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__)
#endif
#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
projects / thirdparty / gcc.git / commitdiff
