900-nios2.patch

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

--- gcc-3.4.3/gcc/Makefile.in
+++ gcc-3.4.3-nios2/gcc/Makefile.in
@@ -3085,7 +3085,7 @@ install-mkheaders: stmp-int-hdrs $(STMP_
 	  $(INSTALL_DATA) $(srcdir)/README-fixinc \
 	    $(DESTDIR)$(itoolsdatadir)/include/README ; \
 	  $(INSTALL_SCRIPT) fixinc.sh $(DESTDIR)$(itoolsdir)/fixinc.sh ; \
-	  $(INSTALL_PROGRAM) fixinc/fixincl $(DESTDIR)$(itoolsdir)/fixincl ; \
+	  $(INSTALL_PROGRAM) fixinc/fixincl$(build_exeext) $(DESTDIR)$(itoolsdir)/fixincl$(build_exeext) ; \
 	  $(INSTALL_DATA) $(srcdir)/gsyslimits.h \
 	    $(DESTDIR)$(itoolsdatadir)/gsyslimits.h ; \
 	else :; fi
--- gcc-3.4.3/gcc/combine.c
+++ gcc-3.4.3-nios2/gcc/combine.c
@@ -4380,6 +4380,14 @@ combine_simplify_rtx (rtx x, enum machin
 					 mode);
 	    }
 
+#ifndef __nios2__
+/* This screws up Nios II in this test case:
+
+if (x & 1)
+  return 2;
+else
+  return 3;
+*/
 	  else if (STORE_FLAG_VALUE == 1
 		   && new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT
 		   && op1 == const0_rtx
@@ -4391,6 +4399,7 @@ combine_simplify_rtx (rtx x, enum machin
 				 gen_lowpart_for_combine (mode, op0),
 				 const1_rtx);
 	    }
+#endif
 
 	  else if (STORE_FLAG_VALUE == 1
 		   && new_code == EQ && GET_MODE_CLASS (mode) == MODE_INT
--- gcc-3.4.3/gcc/config/nios2/crti.asm
+++ gcc-3.4.3-nios2/gcc/config/nios2/crti.asm
@@ -0,0 +1,88 @@
+/*
+  Copyright (C) 2003 
+ by Jonah Graham ([e-mail])
+
+This file 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 version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file with other programs, and to distribute
+those programs without any restriction coming from the use of this
+file.  (The General Public License restrictions do apply in other
+respects; for example, they cover modification of the file, and
+distribution when not linked into another program.)
+
+This file is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or 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 this program; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+   As a special exception, if you link this library with files
+   compiled with GCC to produce an executable, this does not 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.
+
+
+This file just make a stack frame for the contents of the .fini and
+.init sections.  Users may put any desired instructions in those
+sections.
+
+
+While technically any code can be put in the init and fini sections
+most stuff will not work other than stuff which obeys the call frame
+and ABI. All the call-preserved registers are saved, the call clobbered
+registers should have been saved by the code calling init and fini.
+
+See crtstuff.c for an example of code that inserts itself in the 
+init and fini sections. 
+
+See crt0.s for the code that calls init and fini.
+*/
+
+	.file	"crti.asm"
+
+	.section	".init"
+	.align 2
+	.global	_init
+_init:
+	addi	sp, sp, -48
+	stw	ra, 44(sp)
+	stw	r23, 40(sp)
+	stw	r22, 36(sp)
+	stw	r21, 32(sp)
+	stw	r20, 28(sp)
+	stw	r19, 24(sp)
+	stw	r18, 20(sp)
+	stw	r17, 16(sp)
+	stw	r16, 12(sp)
+	stw	fp, 8(sp)
+	mov	fp, sp
+	
+	
+	.section	".fini"
+	.align	2
+	.global	_fini
+_fini:
+	addi	sp, sp, -48
+	stw	ra, 44(sp)
+	stw	r23, 40(sp)
+	stw	r22, 36(sp)
+	stw	r21, 32(sp)
+	stw	r20, 28(sp)
+	stw	r19, 24(sp)
+	stw	r18, 20(sp)
+	stw	r17, 16(sp)
+	stw	r16, 12(sp)
+	stw	fp, 8(sp)
+	mov	fp, sp
+	
+
--- gcc-3.4.3/gcc/config/nios2/crtn.asm
+++ gcc-3.4.3-nios2/gcc/config/nios2/crtn.asm
@@ -0,0 +1,70 @@
+/*
+  Copyright (C) 2003 
+ by Jonah Graham ([e-mail])
+
+This file 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 version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file with other programs, and to distribute
+those programs without any restriction coming from the use of this
+file.  (The General Public License restrictions do apply in other
+respects; for example, they cover modification of the file, and
+distribution when not linked into another program.)
+
+This file is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or 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 this program; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+   As a special exception, if you link this library with files
+   compiled with GCC to produce an executable, this does not 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.
+
+
+This file just makes sure that the .fini and .init sections do in
+fact return.  Users may put any desired instructions in those sections.
+This file is the last thing linked into any executable.
+*/	
+	.file	"crtn.asm"
+
+
+
+	.section	".init"
+	ldw	ra, 44(sp)
+	ldw	r23, 40(sp)
+	ldw	r22, 36(sp)
+	ldw	r21, 32(sp)
+	ldw	r20, 28(sp)
+	ldw	r19, 24(sp)
+	ldw	r18, 20(sp)
+	ldw	r17, 16(sp)
+	ldw	r16, 12(sp)
+	ldw	fp, 8(sp)
+	addi	sp, sp, -48
+	ret
+	
+	.section	".fini"
+	ldw	ra, 44(sp)
+	ldw	r23, 40(sp)
+	ldw	r22, 36(sp)
+	ldw	r21, 32(sp)
+	ldw	r20, 28(sp)
+	ldw	r19, 24(sp)
+	ldw	r18, 20(sp)
+	ldw	r17, 16(sp)
+	ldw	r16, 12(sp)
+	ldw	fp, 8(sp)
+	addi	sp, sp, -48
+	ret
+	
--- gcc-3.4.3/gcc/config/nios2/lib2-divmod-hi.c
+++ gcc-3.4.3-nios2/gcc/config/nios2/lib2-divmod-hi.c
@@ -0,0 +1,123 @@
+
+/* We include auto-host.h here to get HAVE_GAS_HIDDEN.  This is
+   supposedly valid even though this is a "target" file.  */
+#include "auto-host.h"
+
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
+
+
+/* Don't use `fancy_abort' here even if config.h says to use it.  */
+#ifdef abort
+#undef abort
+#endif
+
+
+#ifdef HAVE_GAS_HIDDEN
+#define ATTRIBUTE_HIDDEN  __attribute__ ((__visibility__ ("hidden")))
+#else
+#define ATTRIBUTE_HIDDEN
+#endif
+
+#include "libgcc2.h"
+
+extern HItype __modhi3 (HItype, HItype);
+extern HItype __divhi3 (HItype, HItype);
+extern HItype __umodhi3 (HItype, HItype);
+extern HItype __udivhi3 (HItype, HItype);
+
+static UHItype udivmodhi4(UHItype, UHItype, word_type);
+
+static UHItype
+udivmodhi4(UHItype num, UHItype den, word_type modwanted)
+{
+  UHItype bit = 1;
+  UHItype res = 0;
+
+  while (den < num && bit && !(den & (1L<<15)))
+    {
+      den <<=1;
+      bit <<=1;
+    }
+  while (bit)
+    {
+      if (num >= den)
+	{
+	  num -= den;
+	  res |= bit;
+	}
+      bit >>=1;
+      den >>=1;
+    }
+  if (modwanted) return num;
+  return res;
+}
+
+
+HItype
+__divhi3 (HItype a, HItype b)
+{
+  word_type neg = 0;
+  HItype res;
+
+  if (a < 0)
+    {
+      a = -a;
+      neg = !neg;
+    }
+
+  if (b < 0)
+    {
+      b = -b;
+      neg = !neg;
+    }
+
+  res = udivmodhi4 (a, b, 0);
+
+  if (neg)
+    res = -res;
+
+  return res;
+}
+
+
+HItype
+__modhi3 (HItype a, HItype b)
+{
+  word_type neg = 0;
+  HItype res;
+
+  if (a < 0)
+    {
+      a = -a;
+      neg = 1;
+    }
+
+  if (b < 0)
+    b = -b;
+
+  res = udivmodhi4 (a, b, 1);
+
+  if (neg)
+    res = -res;
+
+  return res;
+}
+
+
+HItype
+__udivhi3 (HItype a, HItype b)
+{
+  return udivmodhi4 (a, b, 0);
+}
+
+
+HItype
+__umodhi3 (HItype a, HItype b)
+{
+  return udivmodhi4 (a, b, 1);
+}
+
--- gcc-3.4.3/gcc/config/nios2/lib2-divmod.c
+++ gcc-3.4.3-nios2/gcc/config/nios2/lib2-divmod.c
@@ -0,0 +1,126 @@
+
+/* We include auto-host.h here to get HAVE_GAS_HIDDEN.  This is
+   supposedly valid even though this is a "target" file.  */
+#include "auto-host.h"
+
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
+
+
+/* Don't use `fancy_abort' here even if config.h says to use it.  */
+#ifdef abort
+#undef abort
+#endif
+
+
+#ifdef HAVE_GAS_HIDDEN
+#define ATTRIBUTE_HIDDEN  __attribute__ ((__visibility__ ("hidden")))
+#else
+#define ATTRIBUTE_HIDDEN
+#endif
+
+#include "libgcc2.h"
+
+extern SItype __modsi3 (SItype, SItype);
+extern SItype __divsi3 (SItype, SItype);
+extern SItype __umodsi3 (SItype, SItype);
+extern SItype __udivsi3 (SItype, SItype);
+
+static USItype udivmodsi4(USItype, USItype, word_type);
+
+/* 16-bit SI divide and modulo as used in NIOS */
+
+
+static USItype
+udivmodsi4(USItype num, USItype den, word_type modwanted)
+{
+  USItype bit = 1;
+  USItype res = 0;
+
+  while (den < num && bit && !(den & (1L<<31)))
+    {
+      den <<=1;
+      bit <<=1;
+    }
+  while (bit)
+    {
+      if (num >= den)
+	{
+	  num -= den;
+	  res |= bit;
+	}
+      bit >>=1;
+      den >>=1;
+    }
+  if (modwanted) return num;
+  return res;
+}
+
+
+SItype
+__divsi3 (SItype a, SItype b)
+{
+  word_type neg = 0;
+  SItype res;
+
+  if (a < 0)
+    {
+      a = -a;
+      neg = !neg;
+    }
+
+  if (b < 0)
+    {
+      b = -b;
+      neg = !neg;
+    }
+
+  res = udivmodsi4 (a, b, 0);
+
+  if (neg)
+    res = -res;
+
+  return res;
+}
+
+
+SItype
+__modsi3 (SItype a, SItype b)
+{
+  word_type neg = 0;
+  SItype res;
+
+  if (a < 0)
+    {
+      a = -a;
+      neg = 1;
+    }
+
+  if (b < 0)
+    b = -b;
+
+  res = udivmodsi4 (a, b, 1);
+
+  if (neg)
+    res = -res;
+
+  return res;
+}
+
+
+SItype
+__udivsi3 (SItype a, SItype b)
+{
+  return udivmodsi4 (a, b, 0);
+}
+
+
+SItype
+__umodsi3 (SItype a, SItype b)
+{
+  return udivmodsi4 (a, b, 1);
+}
+
--- gcc-3.4.3/gcc/config/nios2/lib2-divtable.c
+++ gcc-3.4.3-nios2/gcc/config/nios2/lib2-divtable.c
@@ -0,0 +1,46 @@
+
+/* We include auto-host.h here to get HAVE_GAS_HIDDEN.  This is
+   supposedly valid even though this is a "target" file.  */
+#include "auto-host.h"
+
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
+
+
+/* Don't use `fancy_abort' here even if config.h says to use it.  */
+#ifdef abort
+#undef abort
+#endif
+
+
+#ifdef HAVE_GAS_HIDDEN
+#define ATTRIBUTE_HIDDEN  __attribute__ ((__visibility__ ("hidden")))
+#else
+#define ATTRIBUTE_HIDDEN
+#endif
+
+#include "libgcc2.h"
+
+UQItype __divsi3_table[] =
+{
+  0, 0/1, 0/2, 0/3, 0/4, 0/5, 0/6, 0/7, 0/8, 0/9, 0/10, 0/11, 0/12, 0/13, 0/14, 0/15,
+  0, 1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, 1/10, 1/11, 1/12, 1/13, 1/14, 1/15,
+  0, 2/1, 2/2, 2/3, 2/4, 2/5, 2/6, 2/7, 2/8, 2/9, 2/10, 2/11, 2/12, 2/13, 2/14, 2/15,
+  0, 3/1, 3/2, 3/3, 3/4, 3/5, 3/6, 3/7, 3/8, 3/9, 3/10, 3/11, 3/12, 3/13, 3/14, 3/15,
+  0, 4/1, 4/2, 4/3, 4/4, 4/5, 4/6, 4/7, 4/8, 4/9, 4/10, 4/11, 4/12, 4/13, 4/14, 4/15,
+  0, 5/1, 5/2, 5/3, 5/4, 5/5, 5/6, 5/7, 5/8, 5/9, 5/10, 5/11, 5/12, 5/13, 5/14, 5/15,
+  0, 6/1, 6/2, 6/3, 6/4, 6/5, 6/6, 6/7, 6/8, 6/9, 6/10, 6/11, 6/12, 6/13, 6/14, 6/15,
+  0, 7/1, 7/2, 7/3, 7/4, 7/5, 7/6, 7/7, 7/8, 7/9, 7/10, 7/11, 7/12, 7/13, 7/14, 7/15,
+  0, 8/1, 8/2, 8/3, 8/4, 8/5, 8/6, 8/7, 8/8, 8/9, 8/10, 8/11, 8/12, 8/13, 8/14, 8/15,
+  0, 9/1, 9/2, 9/3, 9/4, 9/5, 9/6, 9/7, 9/8, 9/9, 9/10, 9/11, 9/12, 9/13, 9/14, 9/15,
+  0, 10/1, 10/2, 10/3, 10/4, 10/5, 10/6, 10/7, 10/8, 10/9, 10/10, 10/11, 10/12, 10/13, 10/14, 10/15,
+  0, 11/1, 11/2, 11/3, 11/4, 11/5, 11/6, 11/7, 11/8, 11/9, 11/10, 11/11, 11/12, 11/13, 11/14, 11/15,
+  0, 12/1, 12/2, 12/3, 12/4, 12/5, 12/6, 12/7, 12/8, 12/9, 12/10, 12/11, 12/12, 12/13, 12/14, 12/15,
+  0, 13/1, 13/2, 13/3, 13/4, 13/5, 13/6, 13/7, 13/8, 13/9, 13/10, 13/11, 13/12, 13/13, 13/14, 13/15,
+  0, 14/1, 14/2, 14/3, 14/4, 14/5, 14/6, 14/7, 14/8, 14/9, 14/10, 14/11, 14/12, 14/13, 14/14, 14/15,
+  0, 15/1, 15/2, 15/3, 15/4, 15/5, 15/6, 15/7, 15/8, 15/9, 15/10, 15/11, 15/12, 15/13, 15/14, 15/15,
+};
+
--- gcc-3.4.3/gcc/config/nios2/lib2-mul.c
+++ gcc-3.4.3-nios2/gcc/config/nios2/lib2-mul.c
@@ -0,0 +1,103 @@
+/* while we are debugging (ie compile outside of gcc build) 
+   disable gcc specific headers */
+#ifndef DEBUG_MULSI3
+
+
+/* We include auto-host.h here to get HAVE_GAS_HIDDEN.  This is
+   supposedly valid even though this is a "target" file.  */
+#include "auto-host.h"
+
+
+#include "tconfig.h"
+#include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
+
+
+/* Don't use `fancy_abort' here even if config.h says to use it.  */
+#ifdef abort
+#undef abort
+#endif
+
+
+#ifdef HAVE_GAS_HIDDEN
+#define ATTRIBUTE_HIDDEN  __attribute__ ((__visibility__ ("hidden")))