2009-06-17 Michael Eager <eager@eagercon.com>

        * rs6000/Makefile.in: Add xilinx support.
        * rs6000/xil-crt0.s: New crt0 file for powerpc-xilinx-eabi.
        * rs6000/xilinx.ld: New file.
        * rs6000/xilinx440.ld: Ditto.

4 files changed, 848 insertions, 3 deletions

diff --git a/libgloss/rs6000/Makefile.in b/libgloss/rs6000/Makefile.in
index 3c41ef0b0..6945cc824 100644
--- a/libgloss/rs6000/Makefile.in
+++ b/libgloss/rs6000/Makefile.in
@@ -121,6 +121,14 @@ MBX_OBJS	= open.o close.o lseek.o sbrk.o read.o write.o mbx-exit.o mbx-inbyte.o
 MBX_TEST	= mbx-test
 MBX_INSTALL	= install-mbx
 
+XIL_SCRIPTS 	= xilinx.ld xilinx440.ld
+XIL_SPECS 	= 
+XIL_CRT0	= xil-crt0.o  xil-pgcrt0.o  xil-sim-crt0.o  xil-sim-pgcrt0.o
+XIL_BSP		= libxil.a
+XIL_OBJS	= open.o close.o lseek.o sbrk.o read.o write.o print.o xil-exit.o
+XIL_TEST	= xil-test
+XIL_INSTALL	= install-xil
+
 # Host specific makefile fragment comes in here.
 @host_makefile_frag@
 
@@ -135,7 +143,8 @@ all: \
 	${LINUX_CRT0} ${LINUX_BSP} \
 	${YELLOWKNIFE_CRT0} ${YELLOWKNIFE_BSP} \
 	${ADS_CRT0} ${ADS_BSP} \
-	${MBX_CRT0} ${MBX_BSP}
+	${MBX_CRT0} ${MBX_BSP} \
+	${XIL_CRT0} ${XIL_BSP}
 
 #
 # here's where we build the board support packages for each target
@@ -169,11 +178,15 @@ ${MBX_BSP}: ${OBJS} ${MBX_OBJS}
 	${AR} ${ARFLAGS} $@ ${MBX_OBJS} ${OBJS}
 	${RANLIB} $@
 
+${XIL_BSP}: ${OBJS} ${XIL_OBJS}
+	${AR} ${ARFLAGS} $@ ${XIL_OBJS} ${OBJS}
+	${RANLIB} $@
+
 #
 # here's where we build the test programs for each target
 #
 .PHONY: test
-test:	${SIM_TEST} ${MVME_TEST} ${YELLOWKNIFE_TEST} ${ADS_TEST} ${MBX_TEST}
+test:	${SIM_TEST} ${MVME_TEST} ${YELLOWKNIFE_TEST} ${ADS_TEST} ${MBX_TEST} ${XIL_TEST}
 
 sim-test:	sim-test.x sim-test.dis
 
@@ -263,6 +276,19 @@ mbx-test.dis:	mbx-test.x
 mbx-test.srec:	mbx-test.x
 	${OBJCOPY} -O srec mbx-test.x mbx-test.srec
 
+xil-test:	xil-test.x xil-test.dis xil-test.srec
+
+xil-test.x:	test.o ${XIL_CRT0} ${XIL_BSP}
+	${CC} ${LDFLAGS_FOR_TARGET} -L${objdir} \
+	-T${srcdir}/xilinx.ld ${XIL_CRT0} test.o \
+	-o xil-test.x $(LIBS_FOR_TARGET) ${XIL_BSP} -lc ${XIL_BSP}
+
+xil-test.dis:	xil-test.x
+	${OBJDUMP} -d xil-test.x > xil-test.dis
+
+xil-test.srec:	xil-test.x
+	${OBJCOPY} -O srec xil-test.x xil-test.srec
+
 #
 #
 #
@@ -286,6 +312,20 @@ mbx-inbyte.o: mbx-inbyte.c
 mbx-outbyte.o: mbx-outbyte.c
 mbx-print.o: mbx-print.c
 
+xil-exit.o: xil-exit.c
+
+xil-crt0.o: xil-crt0.S
+	${CC} -c -o $@ $<
+
+xil-pgcrt0.o: xil-crt0.S
+	${CC} -c -DPROFILING -o $@ $<
+
+xil-sim-crt0.o: xil-crt0.S
+	${CC} -c -DSIMULATOR -o $@ $<
+
+xil-sim-pgcrt0.o: xil-crt0.S
+	${CC} -c -DSIMULATOR -DPROFILING -o $@ $<
+
 sol-cfuncs.o: sol-cfuncs.c
 sol-syscall.o: sol-syscall.S
 
@@ -314,7 +354,7 @@ distclean maintainer-clean realclean: clean
 	rm -f Makefile config.status *~
 
 .PHONY: install info install-info clean-info
-install: ${SIM_INSTALL} ${MVME_INSTALL} ${SOLARIS_INSTALL} ${LINUX_INSTALL} ${YELLOWKNIFE_INSTALL} ${ADS_INSTALL} ${MBX_INSTALL}
+install: ${SIM_INSTALL} ${MVME_INSTALL} ${SOLARIS_INSTALL} ${LINUX_INSTALL} ${YELLOWKNIFE_INSTALL} ${ADS_INSTALL} ${MBX_INSTALL} ${XIL_INSTALL}
 
 install-sim:
 	set -e; for x in ${SIM_CRT0} ${SIM_BSP} ${SIM_SCRIPTS}; do ${INSTALL_DATA} $$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
@@ -340,6 +380,10 @@ install-mbx:
 	set -e; for x in ${MBX_CRT0} ${MBX_BSP}; do ${INSTALL_DATA} $$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
 	set -e; for x in ${MBX_SCRIPTS} ${MBX_SPECS}; do ${INSTALL_DATA} $(srcdir)/$$x $(DESTDIR)${tooldir}/lib${MULTISUBDIR}/$$x; done
 
+install-xil:
+	set -e; for x in ${XIL_CRT0} ${XIL_BSP}; do ${INSTALL_DATA} $$x $(DESTDIR)${tooldir}/lib/$$x; done
+	set -e; for x in ${XIL_SCRIPTS} ${XIL_SPECS}; do ${INSTALL_DATA} $(srcdir)/$$x $(DESTDIR)${tooldir}/lib/$$x; done
+
 doc:
 info:
 install-info:
diff --git a/libgloss/rs6000/xil-crt0.S b/libgloss/rs6000/xil-crt0.S
new file mode 100644
index 000000000..e003ed37e
--- /dev/null
+++ b/libgloss/rs6000/xil-crt0.S
@@ -0,0 +1,192 @@
+/*-----------------------------------------------------------------------------
+//
+// Copyright (c) 2004, 2009 Xilinx, Inc.  All rights reserved. 
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// 
+// 1.  Redistributions source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer. 
+// 
+// 2.  Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution. 
+// 
+// 3.  Neither the name of Xilinx nor the names of its contributors may be
+// used to endorse or promote products derived from this software without
+// specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
+// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+//---------------------------------------------------------------------------*/
+
+	.file	"xil-crt0.S"
+	.section ".got2","aw"
+	.align	2
+
+.LCTOC1 = . + 32768
+
+.Lsbss_start = .-.LCTOC1
+	.long	__sbss_start
+
+.Lsbss_end = .-.LCTOC1
+	.long	__sbss_end
+
+.Lbss_start = .-.LCTOC1
+	.long	__bss_start
+
+.Lbss_end = .-.LCTOC1
+	.long	__bss_end
+
+.Lstack = .-.LCTOC1
+	.long	__stack
+
+.Lsda = .-.LCTOC1
+    .long   _SDA_BASE_                      /* address of the first small data area */
+
+.Lsda2 = .-.LCTOC1
+    .long   _SDA2_BASE_                     /* address of the second small data area */
+
+    
+	.text
+	.globl	_start
+_start:
+        bl      __cpu_init              /* Initialize the CPU first (BSP provides this) */
+
+    	lis	5,.LCTOC1@h
+	ori	5,5,.LCTOC1@l
+
+        lwz     13,.Lsda(5)             /* load r13 with _SDA_BASE_ address */
+        lwz     2,.Lsda2(5)             /* load r2 with _SDA2_BASE_ address */
+
+#ifndef SIMULATOR
+        /* clear sbss */
+	lwz	6,.Lsbss_start(5)	/* calculate beginning of the SBSS */
+	lwz	7,.Lsbss_end(5)		/* calculate end of the SBSS */
+
+	cmplw	1,6,7
+	bc	4,4,.Lenclsbss          /* If no SBSS, no clearing required */
+
+      	li	0,0			/* zero to clear memory */
+    	subf	8,6,7			/* number of bytes to zero */
+        srwi.   9,8,2                   /* number of words to zero */
+        beq     .Lstbyteloopsbss        /* Check if the number of bytes was less than 4 */
+        mtctr   9        
+	addi	6,6,-4			/* adjust so we can use stwu */
+.Lloopsbss:
+	stwu	0,4(6)			/* zero sbss */
+	bdnz	.Lloopsbss
+
+.Lstbyteloopsbss:
+        andi.   9,8,3                   /* Calculate how many trailing bytes we have */
+        beq     0,.Lenclsbss
+        mtctr   9
+        addi    6,6,-1                  /* adjust, so we can use stbu */
+
+.Lbyteloopsbss:  
+        stbu    0,1(6)
+        bdnz    .Lbyteloopsbss
+    
+.Lenclsbss:  
+.Lstclbss:
+    
+	/* clear bss */
+	lwz	6,.Lbss_start(5)	/* calculate beginning of the BSS */
+	lwz	7,.Lbss_end(5)		/* calculate end of the BSS */
+
+	cmplw	1,6,7
+	bc	4,4,.Lenclbss           /* If no BSS, no clearing required */
+
+    	li	0,0			/* zero to clear memory */
+	subf	8,6,7			/* number of bytes to zero */
+        srwi.   9,8,2                   /* number of words to zero */
+        beq     .Lstbyteloopbss         /* Check if the number of bytes was less than 4 */
+        mtctr   9
+	addi	6,6,-4			/* adjust so we can use stwu */
+.Lloopbss:
+	stwu	0,4(6)			/* zero bss */
+	bdnz	.Lloopbss
+
+.Lstbyteloopbss:    
+        andi.   9,8,3                   /* Calculate how many trailing bytes we have */
+        beq     0,.Lenclbss             /* If zero, we are done */
+        mtctr   9
+        addi    6,6,-1                  /* adjust, so we can use stbu */
+
+.Lbyteloopbss:  
+        stbu    0,1(6)
+        bdnz    .Lbyteloopbss
+    
+.Lenclbss:
+#endif /* SIMULATOR */
+
+	/* set stack pointer */
+	lwz	1,.Lstack(5)		/* stack address */
+
+	/* set up initial stack frame */
+	addi	1,1,-8			/* location of back chain */
+	lis	0,0
+	stw	0,0(1)			/* set end of back chain */
+	
+	/* initialize base timer to zero */
+	mtspr	0x11c,0
+	mtspr	0x11d,0
+
+#ifdef HAVE_XFPU    
+	/* On the Xilinx PPC405 and PPC440, the MSR
+           must be explicitly set to mark the prescence
+           of an FPU */
+	mfpvr	0
+	rlwinm	0,0,0,12,15
+	cmpwi	7,0,8192
+        mfmsr   0
+        ori     0,0,8192
+	beq-	7,fpu_init_done
+do_405:
+        oris    0,0,512
+fpu_init_done:
+        mtmsr   0
+#endif    
+    
+#ifdef PROFILING
+	/* Setup profiling stuff */
+	bl	_profile_init
+#endif /* PROFILING */
+
+	/* Call __init */
+	bl	__init
+
+	/* Let her rip */
+	bl	main
+
+        /* Invoke the language cleanup functions */        
+        bl      __fini
+
+#ifdef PROFILING
+	/* Cleanup profiling stuff */
+	bl	_profile_clean
+#endif /* PROFILING */
+
+	/* Call __init */
+        /* All done */
+	bl	exit
+    
+/* Trap has been removed for both simulation and hardware */
+	.globl _exit
+_exit:
+	b _exit
+
+.Lstart:
+	.size	_start,.Lstart-_start
+
diff --git a/libgloss/rs6000/xilinx.ld b/libgloss/rs6000/xilinx.ld
new file mode 100644
index 000000000..75b2a12b6
--- /dev/null
+++ b/libgloss/rs6000/xilinx.ld
@@ -0,0 +1,307 @@
+/* Default linker script, for normal executables 
+
+Copyright (c) 2008, 2009 Xilinx, Inc.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1.  Redistributions source code must retain the above copyright notice,
+this list of conditions and the following disclaimer. 
+
+2.  Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution. 
+
+3.  Neither the name of Xilinx nor the names of its contributors may be
+used to endorse or promote products derived from this software without
+specific prior written permission. 
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc",
+	      "elf32-powerpc")
+OUTPUT_ARCH(powerpc:common)
+ENTRY(_boot)
+_START_ADDR = DEFINED(_START_ADDR) ? _START_ADDR : 0xFFFF0000;
+_STACK_SIZE = DEFINED(_STACK_SIZE) ? _STACK_SIZE : 4k;
+_HEAP_SIZE = DEFINED(_HEAP_SIZE) ? _HEAP_SIZE : 4k;
+STARTUP(boot.o)
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+PROVIDE (__stack = 0); PROVIDE (___stack = 0);
+SECTIONS
+{
+
+  . = _START_ADDR;
+  .vectors  BLOCK (64k):
+  {
+    *(.vectors)
+  }
+  /* Read-only sections, merged into text segment: */
+  .hash		  : { *(.hash)		}
+  .dynsym	  : { *(.dynsym)		}
+  .dynstr	  : { *(.dynstr)		}
+  .gnu.version   : { *(.gnu.version)      }
+  .gnu.version_d   : { *(.gnu.version_d)  }
+  .gnu.version_r   : { *(.gnu.version_r)  }
+  .rela.text     :
+    {
+      *(.rela.text)
+      *(.rela.text.*)
+      *(.rela.gnu.linkonce.t*)
+    }
+  .rela.data     :
+    {
+      *(.rela.data)
+      *(.rela.data.*)
+      *(.rela.gnu.linkonce.d*)
+    }
+  .rela.rodata   :
+    {
+      *(.rela.rodata)
+      *(.rela.rodata.*)
+      *(.rela.gnu.linkonce.r*)
+    }
+  .rela.got	  : { *(.rela.got)	}
+  .rela.got1	  : { *(.rela.got1)	}
+  .rela.got2	  : { *(.rela.got2)	}
+  .rela.ctors	  : { *(.rela.ctors)	}
+  .rela.dtors	  : { *(.rela.dtors)	}
+  .rela.init	  : { *(.rela.init)	}
+  .rela.fini	  : { *(.rela.fini)	}
+  .rela.bss	  : { *(.rela.bss)	}
+  .rela.plt	  : { *(.rela.plt)	}
+  .rela.sdata	  : { *(.rela.sdata)	}
+  .rela.sbss	  : { *(.rela.sbss)	}
+  .rela.sdata2	  : { *(.rela.sdata2)	}
+  .rela.sbss2	  : { *(.rela.sbss2)	}
+  .text      :
+  {
+    *(.text)
+    *(.text.*)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.gnu.linkonce.t.*)
+  } =0
+  .init		  : { KEEP (*(.init))	} =0
+  .fini		  : { KEEP (*(.fini))	} =0
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata.*)
+    *(.gnu.linkonce.r.*)
+  }
+  .rodata1	  : { *(.rodata1) }
+  _etext = .;
+  PROVIDE (etext = .);
+  PROVIDE (__etext = .);
+  .sdata2   : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*)}
+  __SDATA2_START__ = ADDR(.sdata2);
+  __SDATA2_END__ = ADDR(.sdata2) + SIZEOF(.sdata2);
+  .sbss2   : { *(.sbss2) *(.gnu.linkonce.sb2.*)}
+  __SBSS2_START__ = ADDR(.sbss2);
+  __SBSS2_END__ = ADDR(.sbss2) + SIZEOF(.sbss2);
+  /* Adjust the address for the data segment.  We want to adjust up to
+     the same address within the page on the next page up.  It would
+     be more correct to do this:
+       . = ALIGN(0x08) + (ALIGN(8) & (0x08 - 1));
+     The current expression does not correctly handle the case of a
+     text segment ending precisely at the end of a page; it causes the
+     data segment to skip a page.  The above expression does not have
+     this problem, but it will currently (2/95) cause BFD to allocate
+     a single segment, combining both text and data, for this case.
+     This will prevent the text segment from being shared among
+     multiple executions of the program; I think that is more
+     important than losing a page of the virtual address space (note
+     that no actual memory is lost; the page which is skipped can not
+     be referenced).  */
+/*  . =  ALIGN(8) + 0x08;*/
+  .data    :
+  {
+    *(.data)
+    *(.data.*)
+    *(.gnu.linkonce.d*)
+    CONSTRUCTORS
+  }
+  .data1   : { *(.data1) }
+  .got1		  : { *(.got1) }
+  .dynamic	  : { *(.dynamic) }
+  /* Put .ctors and .dtors next to the .got2 section, so that the pointers
+     get relocated with -mrelocatable. Also put in the .fixup pointers.
+     The current compiler no longer needs this, but keep it around for 2.7.2  */
+		PROVIDE (_GOT2_START_ = .);
+		PROVIDE (__GOT2_START_ = .);
+  .got2		  :  { *(.got2) }
+		PROVIDE (__CTOR_LIST__ = .);
+		PROVIDE (___CTOR_LIST__ = .);
+                .ctors   :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    /* We don't want to include the .ctor section from
+       from the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
+		PROVIDE (__CTOR_END__ = .);
+		PROVIDE (___CTOR_END__ = .);
+		PROVIDE (__DTOR_LIST__ = .);
+		PROVIDE (___DTOR_LIST__ = .);
+                 .dtors         :
+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
+		PROVIDE (__DTOR_END__ = .);
+		PROVIDE (___DTOR_END__ = .);
+		PROVIDE (_FIXUP_START_ = .);
+		PROVIDE (__FIXUP_START_ = .);
+  .fixup	  : { *(.fixup) }
+		PROVIDE (_FIXUP_END_ = .);
+		PROVIDE (__FIXUP_END_ = .);
+		PROVIDE (_GOT2_END_ = .);
+		PROVIDE (__GOT2_END_ = .);
+		PROVIDE (_GOT_START_ = .);
+		PROVIDE (__GOT_START_ = .);
+  .got		  : { *(.got) }
+  .got.plt	  : { *(.got.plt) }
+		PROVIDE (_GOT_END_ = .);
+		PROVIDE (__GOT_END_ = .);
+  /* Added by Sathya to handle C++ exceptions */
+  .eh_frame   : {
+    *(.eh_frame)
+  }
+  .jcr   : {
+    *(.jcr)
+  }
+  .gcc_except_table   : {
+    *(.gcc_except_table)
+  }
+  /* We want the small data sections together, so single-instruction offsets
+     can access them all, and initialized data all before uninitialized, so
+     we can shorten the on-disk segment size.  */
+  .sdata	  : { *(.sdata) *(.sdata.*) *(.gnu.linkonce.s.*)}
+  __SDATA_START__ = ADDR(.sdata);
+  __SDATA_END__ = ADDR(.sdata) + SIZEOF(.sdata);
+  _edata  =  .;
+  PROVIDE (edata = .);
+  PROVIDE (__edata = .);
+  .sbss      :
+  {
+    __sbss_start = .;
+    ___sbss_start = .;
+    *(.sbss)
+    *(.sbss.*)
+    *(.gnu.linkonce.sb.*)
+    *(.scommon)
+    *(.dynsbss)
+    __sbss_end = .;
+    ___sbss_end = .;
+  }
+  .plt   : { *(.plt) }
+  .bss       :
+  {
+   __bss_start = .;
+   ___bss_start = .;
+   *(.dynbss)
+   *(.bss)
+   *(.bss.*)
+   *(.gnu.linkonce.b.*)
+   *(COMMON)
+   . = ALIGN(4);
+   __bss_end = .;
+  }
+
+  .stack     :
+  { 
+    _stack_end = .;
+    . = . + _STACK_SIZE;
+    . = ALIGN(16);
+    __stack = .;
+  }
+
+  .heap      :
+  {
+    _heap_start = .;
+    . = . + _HEAP_SIZE;
+    . = ALIGN(16);
+    _heap_end = .;
+  }
+
+  .tdata   : {
+    *(.tdata)
+    *(.tdata.*)
+    *(.gnu.linkonce.td.*)
+  }
+  .tbss   : {
+    *(.tbss)
+    *(.gnu.linkonce.tb.*)
+  }
+  /* Check to see if boot0 is going to be within 24bits from boot */
+  /* If so, then leave the location counter as is. */
+  /* If not, then make location counter to be 0x20 locations above boot location */
+  /* This assumes that a BRAM is present for boot and hence 0x20 locations above it are valid */
+  /* This fixes CR 183394 */
+ __boot0_flag__ = ((. > 0x00ffffff) && (. < 0xff000000)) ? 1 : 0;
+ . = (__boot0_flag__) ? 0xffffffdc : .;
+  .boot0  : { *(.boot0)}
+  _end = . ;
+  end = .;
+  __end = .;
+  .boot  0xFFFFFFFC  : { *(.boot) }
+  /* These are needed for ELF backends which have not yet been
+     converted to the new style linker.  */
+  .stab 0 : { *(.stab) }
+  .stabstr 0 : { *(.stabstr) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+  /* These must appear regardless of  .  */
+}
diff --git a/libgloss/rs6000/xilinx440.ld b/libgloss/rs6000/xilinx440.ld
new file mode 100644
index 000000000..2c7c5aba4
--- /dev/null
+++ b/libgloss/rs6000/xilinx440.ld
@@ -0,0 +1,302 @@
+/* Default linker script for PowerPC 440, for normal executables 
+
+Copyright (c) 2008, 2009 Xilinx, Inc.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1.  Redistributions source code must retain the above copyright notice,
+this list of conditions and the following disclaimer. 
+
+2.  Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution. 
+
+3.  Neither the name of Xilinx nor the names of its contributors may be
+used to endorse or promote products derived from this software without
+specific prior written permission. 
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc",
+	      "elf32-powerpc")
+OUTPUT_ARCH(powerpc:common)
+ENTRY(_boot)
+_START_ADDR = DEFINED(_START_ADDR) ? _START_ADDR : 0xFFFF0000;
+_STACK_SIZE = DEFINED(_STACK_SIZE) ? _STACK_SIZE : 4k;
+_HEAP_SIZE = DEFINED(_HEAP_SIZE) ? _HEAP_SIZE : 4k;
+STARTUP(boot.o)
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+PROVIDE (__stack = 0); PROVIDE (___stack = 0);
+SECTIONS
+{
+
+  . = _START_ADDR;
+
+  /* Read-only sections, merged into text segment: */
+  .hash		  : { *(.hash)		}
+  .dynsym	  : { *(.dynsym)		}
+  .dynstr	  : { *(.dynstr)		}
+  .gnu.version   : { *(.gnu.version)      }
+  .gnu.version_d   : { *(.gnu.version_d)  }
+  .gnu.version_r   : { *(.gnu.version_r)  }
+  .rela.text     :
+    {
+      *(.rela.text)
+      *(.rela.text.*)
+      *(.rela.gnu.linkonce.t*)
+    }
+  .rela.data     :
+    {
+      *(.rela.data)
+      *(.rela.data.*)
+      *(.rela.gnu.linkonce.d*)
+    }
+  .rela.rodata   :
+    {
+      *(.rela.rodata)
+      *(.rela.rodata.*)
+      *(.rela.gnu.linkonce.r*)
+    }
+  .rela.got	  : { *(.rela.got)	}
+  .rela.got1	  : { *(.rela.got1)	}
+  .rela.got2	  : { *(.rela.got2)	}
+  .rela.ctors	  : { *(.rela.ctors)	}
+  .rela.dtors	  : { *(.rela.dtors)	}
+  .rela.init	  : { *(.rela.init)	}
+  .rela.fini	  : { *(.rela.fini)	}
+  .rela.bss	  : { *(.rela.bss)	}
+  .rela.plt	  : { *(.rela.plt)	}
+  .rela.sdata	  : { *(.rela.sdata)	}
+  .rela.sbss	  : { *(.rela.sbss)	}
+  .rela.sdata2	  : { *(.rela.sdata2)	}
+  .rela.sbss2	  : { *(.rela.sbss2)	}
+  .text      :
+  {
+    *(.text)
+    *(.text.*)
+    *(.vectors)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.gnu.linkonce.t.*)
+  } =0
+  .init		  : { KEEP (*(.init))	} =0
+  .fini		  : { KEEP (*(.fini))	} =0
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata.*)
+    *(.gnu.linkonce.r.*)
+  }
+  .rodata1	  : { *(.rodata1) }
+  _etext = .;
+  PROVIDE (etext = .);
+  PROVIDE (__etext = .);
+  .sdata2   : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*)}
+  __SDATA2_START__ = ADDR(.sdata2);
+  __SDATA2_END__ = ADDR(.sdata2) + SIZEOF(.sdata2);
+  .sbss2   : { *(.sbss2) *(.gnu.linkonce.sb2.*)}
+  __SBSS2_START__ = ADDR(.sbss2);
+  __SBSS2_END__ = ADDR(.sbss2) + SIZEOF(.sbss2);
+  /* Adjust the address for the data segment.  We want to adjust up to
+     the same address within the page on the next page up.  It would
+     be more correct to do this:
+       . = ALIGN(0x08) + (ALIGN(8) & (0x08 - 1));
+     The current expression does not correctly handle the case of a
+     text segment ending precisely at the end of a page; it causes the
+     data segment to skip a page.  The above expression does not have
+     this problem, but it will currently (2/95) cause BFD to allocate
+     a single segment, combining both text and data, for this case.
+     This will prevent the text segment from being shared among
+     multiple executions of the program; I think that is more
+     important than losing a page of the virtual address space (note
+     that no actual memory is lost; the page which is skipped can not
+     be referenced).  */
+/*  . =  ALIGN(8) + 0x08;*/
+  .data    :
+  {
+    *(.data)
+    *(.data.*)
+    *(.gnu.linkonce.d*)
+    CONSTRUCTORS
+  }
+  .data1   : { *(.data1) }
+  .got1		  : { *(.got1) }
+  .dynamic	  : { *(.dynamic) }
+  /* Put .ctors and .dtors next to the .got2 section, so that the pointers
+     get relocated with -mrelocatable. Also put in the .fixup pointers.
+     The current compiler no longer needs this, but keep it around for 2.7.2  */
+		PROVIDE (_GOT2_START_ = .);
+		PROVIDE (__GOT2_START_ = .);
+  .got2		  :  { *(.got2) }
+		PROVIDE (__CTOR_LIST__ = .);
+		PROVIDE (___CTOR_LIST__ = .);
+                .ctors   :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    /* We don't want to include the .ctor section from
+       from the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
+		PROVIDE (__CTOR_END__ = .);
+		PROVIDE (___CTOR_END__ = .);
+		PROVIDE (__DTOR_LIST__ = .);
+		PROVIDE (___DTOR_LIST__ = .);
+                 .dtors         :
+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
+		PROVIDE (__DTOR_END__ = .);
+		PROVIDE (___DTOR_END__ = .);
+		PROVIDE (_FIXUP_START_ = .);
+		PROVIDE (__FIXUP_START_ = .);
+  .fixup	  : { *(.fixup) }
+		PROVIDE (_FIXUP_END_ = .);
+		PROVIDE (__FIXUP_END_ = .);
+		PROVIDE (_GOT2_END_ = .);
+		PROVIDE (__GOT2_END_ = .);
+		PROVIDE (_GOT_START_ = .);
+		PROVIDE (__GOT_START_ = .);
+  .got		  : { *(.got) }
+  .got.plt	  : { *(.got.plt) }
+		PROVIDE (_GOT_END_ = .);
+		PROVIDE (__GOT_END_ = .);
+  /* Added by Sathya to handle C++ exceptions */
+  .eh_frame   : {
+    *(.eh_frame)
+  }
+  .jcr   : {
+    *(.jcr)
+  }
+  .gcc_except_table   : {
+    *(.gcc_except_table)
+  }
+  /* We want the small data sections together, so single-instruction offsets
+     can access them all, and initialized data all before uninitialized, so
+     we can shorten the on-disk segment size.  */
+  .sdata	  : { *(.sdata) *(.sdata.*) *(.gnu.linkonce.s.*)}
+  __SDATA_START__ = ADDR(.sdata);
+  __SDATA_END__ = ADDR(.sdata) + SIZEOF(.sdata);
+  _edata  =  .;
+  PROVIDE (edata = .);
+  PROVIDE (__edata = .);
+  .sbss      :
+  {
+    __sbss_start = .;
+    ___sbss_start = .;
+    *(.sbss)
+    *(.sbss.*)
+    *(.gnu.linkonce.sb.*)
+    *(.scommon)
+    *(.dynsbss)
+    __sbss_end = .;
+    ___sbss_end = .;
+  }
+  .plt   : { *(.plt) }
+  .bss       :
+  {
+   __bss_start = .;
+   ___bss_start = .;
+   *(.dynbss)
+   *(.bss)
+   *(.bss.*)
+   *(.gnu.linkonce.b.*)
+   *(COMMON)
+   . = ALIGN(4);
+   __bss_end = .;
+  }
+  
+  .stack     :
+  {
+    _stack_end = .;
+    . = . + _STACK_SIZE;
+    . = ALIGN(16);
+    __stack = .;
+  }
+
+  .heap      : 
+  {
+    _heap_start = .;
+    . = . + _HEAP_SIZE;
+    . = ALIGN(16);
+    _heap_end = .;
+  }
+
+  .tdata   : {
+    *(.tdata)
+    *(.tdata.*)
+    *(.gnu.linkonce.td.*)
+  }
+  .tbss   : {
+    *(.tbss)
+    *(.gnu.linkonce.tb.*)
+  }
+
+  _end = . ;
+  end = .;
+  __end = .;
+
+  .boot0 0xFFFFFF00  : { *(.boot0)}
+
+  .boot  0xFFFFFFFC  : { *(.boot) }
+
+  /* These are needed for ELF backends which have not yet been
+     converted to the new style linker.  */
+  .stab 0 : { *(.stab) }
+  .stabstr 0 : { *(.stabstr) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+  /* These must appear regardless of  .  */
+}