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c-common.c (cpp_define_data_format): New function.

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* c-common.c (cpp_define_data_format): New function.
	(cb_register_builtins): Call it.

	* doc/cpp.texi (Common Predefined Macros): Document
	__TARGET_BITS_ORDER__, __TARGET_BYTES_ORDER__,
	__TARGET_INT_WORDS_ORDER__, __TARGET_FLOAT_WORDS_ORDER__,
	__TARGET_FLOAT_FORMAT__, __TARGET_USES_VAX_F_FLOAT__,
	__TARGET_USES_VAX_D_FLOAT__, __TARGET_USES_VAX_G_FLOAT__,
	__TARGET_USES_VAX_H_FLOAT__.

From-SVN: r56597
This commit is contained in:
Gabriel Dos Reis 2002-08-27 09:38:05 +00:00 committed by Gabriel Dos Reis
parent b0c6c224e2
commit 35885eab33
3 changed files with 147 additions and 0 deletions
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12
gcc/ChangeLog
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@ -1,3 +1,15 @@
2002-08-27 Gabriel Dos Reis <gdr@integrable-solutions.net>
* c-common.c (cpp_define_data_format): New function.
(cb_register_builtins): Call it.
* doc/cpp.texi (Common Predefined Macros): Document
__TARGET_BITS_ORDER__, __TARGET_BYTES_ORDER__,
__TARGET_INT_WORDS_ORDER__, __TARGET_FLOAT_WORDS_ORDER__,
__TARGET_FLOAT_FORMAT__, __TARGET_USES_VAX_F_FLOAT__,
__TARGET_USES_VAX_D_FLOAT__, __TARGET_USES_VAX_G_FLOAT__,
__TARGET_USES_VAX_H_FLOAT__.
2002-08-26 Ziemowit Laski <zlaski@apple.com>
* objc/objc-act.c (get_super_receiver): If inside a class method

93
gcc/c-common.c
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@ -749,6 +749,7 @@ void builtin_define_std PARAMS ((const char *));
static void builtin_define_with_value PARAMS ((const char *, const char *,
int));
static void builtin_define_type_max PARAMS ((const char *, tree, int));
static void cpp_define_data_format PARAMS ((cpp_reader *));
/* Table of machine-independent attributes common to all C-like languages. */
const struct attribute_spec c_common_attribute_table[] =
@ -4661,6 +4662,96 @@ boolean_increment (code, arg)
return val;
}
/* Define macros necessary to describe fundamental data type formats. */
static void
cpp_define_data_format (pfile)
cpp_reader *pfile;
{
const char *format;
/* Define endianness enumeration values. */
cpp_define (pfile, "__GCC_LITTLE_ENDIAN__=0");
cpp_define (pfile, "__GCC_BIG_ENDIAN__=1");
/* Define supported floating-point format enumeration values. */
cpp_define (pfile, "__UNKNOWN_FORMAT__=0");
cpp_define (pfile, "__IEEE_FORMAT__=1");
cpp_define (pfile, "__IBM_FORMAT__=2");
cpp_define (pfile, "__C4X_FORMAT__=3");
cpp_define (pfile, "__VAX_FORMAT__=4");
/* Define target endianness:
- bit order
- byte order
- word order in an integer that spans a multi-word
- word order in a floating-poing that spans a multi-word */
if (BITS_BIG_ENDIAN)
cpp_define (pfile, "__TARGET_BITS_ORDER__=__GCC_BIG_ENDIAN__");
else
cpp_define (pfile, "__TARGET_BITS_ORDER__=__GCC_BIG_ENDIAN__");
if (BYTES_BIG_ENDIAN)
cpp_define (pfile, "__TARGET_BYTES_ORDER__=__GCC_BIG_ENDIAN__");
else
cpp_define (pfile, "__TARGET_BYTES_ORDER__=__GCC_LITTLE_ENDIAN__");
/* Define words order in a multi-word integer. */
if (WORDS_BIG_ENDIAN)
cpp_define (pfile, "__TARGET_INT_WORDS_ORDER__=__GCC_BIG_ENDIAN__");
else
cpp_define (pfile, "__TARGET_INT_WORDS_ORDER__=__GCC_LITTLE_ENDIAN__");
/* Define words order in a multi-word floating point. */
if (FLOAT_WORDS_BIG_ENDIAN)
cpp_define (pfile, "__TARGET_FLOAT_WORDS_ORDER__=__GCC_BIG_ENDIAN__");
else
cpp_define (pfile, "__TARGET_FLOAT_WORDS_ORDER__=__GCC_LITTLE_ENDIAN__");
switch (TARGET_FLOAT_FORMAT)
{
case UNKNOWN_FLOAT_FORMAT:
format = "__UNKNOWN_FORMAT__";
break;
case IEEE_FLOAT_FORMAT:
format = "__IEEE_FORMAT__";
break;
case VAX_FLOAT_FORMAT:
format = "__VAX_FORMAT__";
cpp_define (pfile, "__TARGET_USES_VAX_F_FLOAT__=1");
#ifdef TARGET_G_FLOAT
if (TARGET_G_FLOAT)
{
cpp_define (pfile, "__TARGET_USES_VAX_D_FLOAT__=0");
cpp_define (pfile, "__TARGET_USES_VAX_G_FLOAT__=1");
}
else
{
cpp_define (pfile, "__TARGET_USES_VAX_D_FLOAT__=1");
cpp_define (pfile, "__TARGET_USES_VAX_G_FLOAT__=0");
}
#endif
cpp_define (pfile, "__TARGET_USES_VAX_H_FLOAT__=1");
break;
case IBM_FLOAT_FORMAT:
format = "__IBM_FORMAT__";
break;
case C4X_FLOAT_FORMAT:
format = "__C4X_FORMAT__";
break;
default:
abort();
}
if (TARGET_FLOAT_FORMAT != VAX_FLOAT_FORMAT)
{
cpp_define (pfile, "__TARGET_USES_VAX_F_FLOAT__=0");
cpp_define (pfile, "__TARGET_USES_VAX_D_FLOAT__=0");
cpp_define (pfile, "__TARGET_USES_VAX_G_FLOAT__=0");
cpp_define (pfile, "__TARGET_USES_VAX_H_FLOAT__=0");
}
builtin_define_with_value ("__GCC_FLOAT_FORMAT__", format, 0);
}
/* Hook that registers front end and target-specific built-ins. */
void
cb_register_builtins (pfile)
@ -4745,6 +4836,8 @@ cb_register_builtins (pfile)
if (!flag_signed_char)
cpp_define (pfile, "__CHAR_UNSIGNED__");
cpp_define_data_format (pfile);
/* Make the choice of ObjC runtime visible to source code. */
if (flag_objc && flag_next_runtime)
cpp_define (pfile, "__NEXT_RUNTIME__");

42
gcc/doc/cpp.texi
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@ -2012,6 +2012,48 @@ This macro is defined, with value 1, when the NeXT runtime
(as in @option{-fnext-runtime}) is in use for Objective-C.
@end table
@item __TARGET_BITS_ORDER__
This macro describes the target's bits order in a byte. Its value is
@code{__GCC_LITTLE_ENDIAN__} or @code{__GCC_BIG_ENDIAN__}.
@item __TARGET_BYTES_ORDER__
This macro is defined with value @code{__GCC_LITTLE_ENDIAN__} or
@code{__GCC_BIG_ENDIAN__} if the target's bytes order within a word
is little-endian or big-endian, respectively.
@item __TARGET_INT_WORDS_ORDER__
This macro is defined with value @code{__GCC_LITTLE_ENDIAN__} or
@code{__GCC_BIG_ENDIAN__} if the target's words order within a
multi-word integer datum is little-endian or big-endian, respectively.
@item __TARGET_FLOAT_WORDS_ORDER__
This macro is defined with value @code{__GCC_LITTLE_ENDIAN__} or
@code{__GCC_BIG_ENDIAN__} if the target's words order within a
multi-word floating-point datum is little-endian or big-endian, respectively.
@item __TARGET_FLOAT_FORMAT__
This macro is defined to describe the floating-point format used by the
target. It has value in the set comprised of:
@code{__UNKNOWN_FORMAT__}, @code{__IEEE_FORMAT__},
@code{__IBM_FORMAT__}, @code{__C4X_FORMAT__} and @code{__VAX_FORMAT__}.
@item __TARGET_USES_VAX_F_FLOAT__
This macro is defined with value 1 if the target uses the VAX F-format
for the single precision floating-point data type; else if has value 0.
@item __TARGET_USES_VAX_D_FLOAT__
@item __TARGET_USES_VAX_G_FLOAT__
These macros are always defined, with values 0 or 1. If
@code{__TARGET_FLOAT_FORMAT__} is @code{__VAX_FORMAT__} then they have
mutually exclusive values; else both have value 0. Non-zero
@code{__TARGET_USES_VAX_D_FLOAT__} means the target uses the VAX
D-format for the double precision floating-point data type; non-zero
@code{__TARGET_USES_VAX_G_FLOAT__} means the VAX G-format is used.
@item __TARGET_USES_VAX_H_FLOAT__
When non-zero, the target uses the VAX H-format for the extended
precision floating-point data type.
@node System-specific Predefined Macros
@subsection System-specific Predefined Macros