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[pf3gnuchains/gcc-fork.git] / gcc / libgcc2.h

diff --git a/gcc/libgcc2.h b/gcc/libgcc2.h
index 05901d8..56dc9f7 100644 (file)
--- a/gcc/libgcc2.h
+++ b/gcc/libgcc2.h
@@ -1,12 +1,12 @@
 /* Header file for libgcc2.c.  */
 /* Header file for libgcc2.c.  */

-/* Copyright (C) 2000, 2001, 2004, 2005
+/* Copyright (C) 2000, 2001, 2004, 2005, 2009

    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
    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 2, or (at your option) any later
+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
 version.
 
 GCC is distributed in the hope that it will be useful, but WITHOUT ANY


@@ -14,18 +14,14 @@ WARRANTY; without even the implied warranty of MERCHANTABILITY or
 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 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 COPYING.  If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA.  */
-
-/* As a special exception, if you link this library with other files,
-   some of which are compiled with GCC, to produce an executable,
-   this library does not by itself cause the resulting executable
-   to be covered by the GNU General Public License.
-   This exception does not however invalidate any other reasons why
-   the executable file might be covered by the GNU General Public License.  */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.

 
 

+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */

 
 #ifndef GCC_LIBGCC2_H
 #define GCC_LIBGCC2_H
 
 #ifndef GCC_LIBGCC2_H
 #define GCC_LIBGCC2_H


@@ -39,10 +35,6 @@ extern void __clear_cache (char *, char *);
 extern void __eprintf (const char *, const char *, unsigned int, const char *)
   __attribute__ ((__noreturn__));
 
 extern void __eprintf (const char *, const char *, unsigned int, const char *)
   __attribute__ ((__noreturn__));
 

-struct exception_descriptor;
-extern short int __get_eh_table_language (struct exception_descriptor *);
-extern short int __get_eh_table_version (struct exception_descriptor *);
-

 /* 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.  */
 /* 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.  */


@@ -79,8 +71,56 @@ extern short int __get_eh_table_version (struct exception_descriptor *);
   (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
 #endif
 
   (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
 #endif
 

-#ifndef MIN_UNITS_PER_WORD
-#define MIN_UNITS_PER_WORD UNITS_PER_WORD
+#ifndef SF_SIZE
+#if LIBGCC2_HAS_SF_MODE
+#define SF_SIZE FLT_MANT_DIG
+#else
+#define SF_SIZE 0
+#endif
+#endif
+
+#ifndef DF_SIZE
+#if LIBGCC2_HAS_DF_MODE
+#if LIBGCC2_DOUBLE_TYPE_SIZE == 64
+#define DF_SIZE DBL_MANT_DIG
+#elif LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64
+#define DF_SIZE LDBL_MANT_DIG
+#else
+#define DF_SIZE 0
+#endif
+#else
+#define DF_SIZE 0
+#endif
+#endif
+
+#ifndef XF_SIZE
+#if LIBGCC2_HAS_XF_MODE
+#define XF_SIZE LDBL_MANT_DIG
+#else
+#define XF_SIZE 0
+#endif
+#endif
+
+#ifndef TF_SIZE
+#if LIBGCC2_HAS_TF_MODE
+#define TF_SIZE LDBL_MANT_DIG
+#else
+#define TF_SIZE 0
+#endif
+#endif
+
+/* FIXME: This #ifdef probably should be removed, ie. enable the test
+   for mips too.  */
+/* Don't use IBM Extended Double TFmode for TI->SF calculations.
+   The conversion from long double to float suffers from double
+   rounding, because we convert via double.  In other cases, going
+   through the software fp routines is much slower than the fallback.  */
+#ifdef __powerpc__
+#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106)
+#elif defined(WIDEST_HARDWARE_FP_SIZE)
+#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE)
+#else
+#define AVOID_FP_TYPE_CONVERSION(SIZE) 0

 #endif
 
 /* In the first part of this file, we are interfacing to calls generated
 #endif
 
 /* In the first part of this file, we are interfacing to calls generated


@@ -129,7 +169,8 @@ typedef             float TFtype    __attribute__ ((mode (TF)));
 typedef _Complex float TCtype  __attribute__ ((mode (TC)));
 #endif
 
 typedef _Complex float TCtype  __attribute__ ((mode (TC)));
 #endif
 

-typedef int word_type __attribute__ ((mode (__word__)));
+typedef int cmp_return_type __attribute__((mode (__libgcc_cmp_return__)));
+typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__)));

 
 /* Make sure that we don't accidentally use any normal C language built-in
    type names in the first part of this file.  Instead we want to use *only*
 
 /* Make sure that we don't accidentally use any normal C language built-in
    type names in the first part of this file.  Instead we want to use *only*


@@ -155,7 +196,7 @@ typedef int word_type __attribute__ ((mode (__word__)));
    turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC
    if it existed.  */
 
    turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC
    if it existed.  */
 

-#if MIN_UNITS_PER_WORD > 4
+#if LIBGCC2_UNITS_PER_WORD == 8

 #define W_TYPE_SIZE (8 * BITS_PER_UNIT)
 #define Wtype  DItype
 #define UWtype UDItype
 #define W_TYPE_SIZE (8 * BITS_PER_UNIT)
 #define Wtype  DItype
 #define UWtype UDItype


@@ -166,8 +207,7 @@ typedef int word_type __attribute__ ((mode (__word__)));
 #define __NW(a,b)      __ ## a ## di ## b
 #define __NDW(a,b)     __ ## a ## ti ## b
 #define COMPAT_SIMODE_TRAPPING_ARITHMETIC
 #define __NW(a,b)      __ ## a ## di ## b
 #define __NDW(a,b)     __ ## a ## ti ## b
 #define COMPAT_SIMODE_TRAPPING_ARITHMETIC

-#elif MIN_UNITS_PER_WORD > 2 \
-      || (MIN_UNITS_PER_WORD > 1 && LONG_LONG_TYPE_SIZE > 32)
+#elif LIBGCC2_UNITS_PER_WORD == 4

 #define W_TYPE_SIZE (4 * BITS_PER_UNIT)
 #define Wtype  SItype
 #define UWtype USItype
 #define W_TYPE_SIZE (4 * BITS_PER_UNIT)
 #define Wtype  SItype
 #define UWtype USItype


@@ -177,7 +217,7 @@ typedef int word_type __attribute__ ((mode (__word__)));
 #define UDWtype        UDItype
 #define __NW(a,b)      __ ## a ## si ## b
 #define __NDW(a,b)     __ ## a ## di ## b
 #define UDWtype        UDItype
 #define __NW(a,b)      __ ## a ## si ## b
 #define __NDW(a,b)     __ ## a ## di ## b

-#elif MIN_UNITS_PER_WORD > 1
+#elif LIBGCC2_UNITS_PER_WORD == 2

 #define W_TYPE_SIZE (2 * BITS_PER_UNIT)
 #define Wtype  HItype
 #define UWtype UHItype
 #define W_TYPE_SIZE (2 * BITS_PER_UNIT)
 #define Wtype  HItype
 #define UWtype UHItype


@@ -238,6 +278,10 @@ typedef int word_type __attribute__ ((mode (__word__)));
 #define __floatditf    __NDW(float,tf)
 #define __floatdidf    __NDW(float,df)
 #define __floatdisf    __NDW(float,sf)
 #define __floatditf    __NDW(float,tf)
 #define __floatdidf    __NDW(float,df)
 #define __floatdisf    __NDW(float,sf)

+#define __floatundixf  __NDW(floatun,xf)
+#define __floatunditf  __NDW(floatun,tf)
+#define __floatundidf  __NDW(floatun,df)
+#define __floatundisf  __NDW(floatun,sf)

 #define __fixunsxfSI   __NW(fixunsxf,)
 #define __fixunstfSI   __NW(fixunstf,)
 #define __fixunsdfSI   __NW(fixunsdf,)
 #define __fixunsxfSI   __NW(fixunsxf,)
 #define __fixunstfSI   __NW(fixunstf,)
 #define __fixunsdfSI   __NW(fixunsdf,)


@@ -282,9 +326,9 @@ extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *);
 extern DWtype __negdi2 (DWtype);
 #endif
 
 extern DWtype __negdi2 (DWtype);
 #endif
 

-extern DWtype __lshrdi3 (DWtype, word_type);
-extern DWtype __ashldi3 (DWtype, word_type);
-extern DWtype __ashrdi3 (DWtype, word_type);
+extern DWtype __lshrdi3 (DWtype, shift_count_type);
+extern DWtype __ashldi3 (DWtype, shift_count_type);
+extern DWtype __ashrdi3 (DWtype, shift_count_type);

 
 /* __udiv_w_sdiv is static inline when building other libgcc2 portions.  */
 #if (!defined(L_udivdi3) && !defined(L_divdi3) && \
 
 /* __udiv_w_sdiv is static inline when building other libgcc2 portions.  */
 #if (!defined(L_udivdi3) && !defined(L_divdi3) && \


@@ -292,8 +336,15 @@ extern DWtype __ashrdi3 (DWtype, word_type);
 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
 #endif
 
 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
 #endif
 

-extern word_type __cmpdi2 (DWtype, DWtype);
-extern word_type __ucmpdi2 (DWtype, DWtype);
+extern cmp_return_type __cmpdi2 (DWtype, DWtype);
+extern cmp_return_type __ucmpdi2 (DWtype, DWtype);
+
+#if MIN_UNITS_PER_WORD > 1
+extern SItype __bswapsi2 (SItype);
+#endif
+#if LONG_LONG_TYPE_SIZE > 32
+extern DItype __bswapdi2 (DItype);
+#endif

 
 extern Wtype __absvSI2 (Wtype);
 extern Wtype __addvSI3 (Wtype, Wtype);
 
 extern Wtype __absvSI2 (Wtype);
 extern Wtype __addvSI3 (Wtype, Wtype);


@@ -318,8 +369,9 @@ extern SItype __negvsi2 (SItype);
 #if LIBGCC2_HAS_SF_MODE
 extern DWtype __fixsfdi (SFtype);
 extern SFtype __floatdisf (DWtype);
 #if LIBGCC2_HAS_SF_MODE
 extern DWtype __fixsfdi (SFtype);
 extern SFtype __floatdisf (DWtype);

+extern SFtype __floatundisf (UDWtype);

 extern UWtype __fixunssfSI (SFtype);
 extern UWtype __fixunssfSI (SFtype);

-extern DWtype __fixunssfDI (SFtype);
+extern UDWtype __fixunssfDI (SFtype);

 extern SFtype __powisf2 (SFtype, int);
 extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);
 extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);
 extern SFtype __powisf2 (SFtype, int);
 extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);
 extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);


@@ -327,8 +379,9 @@ extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);
 #if LIBGCC2_HAS_DF_MODE
 extern DWtype __fixdfdi (DFtype);
 extern DFtype __floatdidf (DWtype);
 #if LIBGCC2_HAS_DF_MODE
 extern DWtype __fixdfdi (DFtype);
 extern DFtype __floatdidf (DWtype);

+extern DFtype __floatundidf (UDWtype);

 extern UWtype __fixunsdfSI (DFtype);
 extern UWtype __fixunsdfSI (DFtype);

-extern DWtype __fixunsdfDI (DFtype);
+extern UDWtype __fixunsdfDI (DFtype);

 extern DFtype __powidf2 (DFtype, int);
 extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);
 extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);
 extern DFtype __powidf2 (DFtype, int);
 extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);
 extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);


@@ -336,8 +389,9 @@ extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);
 
 #if LIBGCC2_HAS_XF_MODE
 extern DWtype __fixxfdi (XFtype);
 
 #if LIBGCC2_HAS_XF_MODE
 extern DWtype __fixxfdi (XFtype);

-extern DWtype __fixunsxfDI (XFtype);
+extern UDWtype __fixunsxfDI (XFtype);

 extern XFtype __floatdixf (DWtype);
 extern XFtype __floatdixf (DWtype);

+extern XFtype __floatundixf (UDWtype);

 extern UWtype __fixunsxfSI (XFtype);
 extern XFtype __powixf2 (XFtype, int);
 extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);
 extern UWtype __fixunsxfSI (XFtype);
 extern XFtype __powixf2 (XFtype, int);
 extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);


@@ -345,9 +399,10 @@ extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype);
 #endif
 
 #if LIBGCC2_HAS_TF_MODE
 #endif
 
 #if LIBGCC2_HAS_TF_MODE

-extern DWtype __fixunstfDI (TFtype);
+extern UDWtype __fixunstfDI (TFtype);

 extern DWtype __fixtfdi (TFtype);
 extern TFtype __floatditf (DWtype);
 extern DWtype __fixtfdi (TFtype);
 extern TFtype __floatditf (DWtype);

+extern TFtype __floatunditf (UDWtype);

 extern TFtype __powitf2 (TFtype, int);
 extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype);
 extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype);
 extern TFtype __powitf2 (TFtype, int);
 extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype);
 extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype);


@@ -373,6 +428,16 @@ typedef union
   DWtype ll;
 } DWunion;
 
   DWtype ll;
 } DWunion;
 

+/* Defined for L_popcount_tab.  Exported here because some targets may
+   want to use it for their own versions of the __popcount builtins.  */
+extern const UQItype __popcount_tab[256];
+
+/* Defined for L_clz.  Exported here because some targets may want to use
+   it for their own versions of the __clz builtins.  It contains the bit
+   position of the first set bit for the numbers 0 - 255.  This avoids the
+   need for a separate table for the __ctz builtins.  */
+extern const UQItype __clz_tab[256];
+

 #include "longlong.h"
 
 #undef int
 #include "longlong.h"
 
 #undef int