Port of RTEMS to the ARM processor family by Eric Valette

<valette@crf.canon.fr> and Emmanuel Raguet <raguet@crf.canon.fr>
of Canon CRF - Communication Dept.  This port includes a
basic BSP that is sufficient to link hello world.

8 files changed, 687 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore
new file mode 100644
index 0000000000..282522db03
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/start/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am
new file mode 100644
index 0000000000..22fda2740d
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/start/Makefile.am
@@ -0,0 +1,33 @@
+## 
+## $Id$
+## 
+
+AUTOMAKE_OPTIONS = foreign 1.4
+
+PGMS = $(ARCH)/start.o
+
+S_FILES = start.S
+S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o)
+
+OBJS = $(S_O_FILES)
+
+TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(top_srcdir)/../../../../../../automake/lib.am
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+LINKCMDS = $(top_srcdir)/startup/linkcmds
+
+$(PROJECT_RELEASE)/lib/start$(LIB_VARIANT).o: $(ARCH)/start.o
+	$(INSTALL_DATA) $< $@
+
+
+all: $(ARCH) $(OBJS) $(TMPINSTALL_FILES)
+
+EXTRA_DIST = start.S
+
+include $(top_srcdir)/../../../../../../automake/local.am
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S b/c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S
new file mode 100644
index 0000000000..6c81efda8d
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/start/start.S
@@ -0,0 +1,157 @@
+/*
+ *  start.S :	  RTEMS entry point
+ *
+ *  Copyright (C) 2000 Canon Research Centre France SA.
+ *  Emmanuel Raguet, mailto:raguet@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ */
+
+.equ ABORT_Stack, 0
+.equ IRQ_Stack, 0x100
+.equ FIQ_Stack, 0x200
+.equ SVC_Stack, 0x300
+	
+/* Some standard definitions...*/
+
+.equ Mode_USR,        	     0x10
+.equ Mode_FIQ,        	     0x11
+.equ Mode_IRQ,        	     0x12
+.equ Mode_SVC,        	     0x13
+.equ Mode_ABT,        	     0x17
+.equ Mode_ABORT,             0x17
+.equ Mode_UNDEF,      	     0x1B
+.equ Mode_SYS,        	     0x1F /*only available on ARM Arch. v4*/
+
+.equ I_Bit,           	     0x80
+.equ F_Bit,           	     0x40
+
+
+	.text
+	.globl	_start
+
+	 
+_start:
+
+/*
+ * Here is the code to initialize the low-level BSP environment
+ * (Chip Select, PLL, ....?)
+
+	
+/* Copy data from FLASH to RAM */
+        LDR     r0, =_initdata        /* load address of region */
+	LDR     r1, =0x400000         /* execution address of region */
+        LDR     r2, =_edata           /* copy execution address into r2 */
+
+copy:	
+        CMP     r1, r2		      /* loop whilst r1 < r2 */
+        LDRLO   r3, [r0], #4
+        STRLO   r3, [r1], #4
+        BLO     copy
+
+/* zero the bss */
+        LDR     r1, =__bss_end__       /* get end of ZI region */
+        LDR     r0, =__bss_start__     /* load base address of ZI region */
+zi_init:	
+        MOV     r2, #0
+        CMP     r0, r1		       /* loop whilst r0 < r1 */
+        STRLOT   r2, [r0], #4
+        BLO     zi_init 
+
+	
+/* Load basic ARM7 interrupt table */
+VectorInit:	
+	MOV	R8, #0
+	ADR	R9, Vector_Init_Block
+	LDMIA	R9!, {R0-R7}	/* Copy the Vectors (8 words) */
+	STMIA	R8!, {R0-R7}
+	LDMIA	R9!, {R0-R7}	/* Copy the .long'ed addresses (8 words) */
+	STMIA	R8!, {R0-R7}
+
+	B	init2
+
+/*******************************************************
+ standard exception vectors table
+ *** Must be located at address 0 
+********************************************************/	 
+
+Vector_Init_Block:	
+	LDR	PC, Reset_Addr
+	LDR	PC, Undefined_Addr
+	LDR	PC, SWI_Addr
+	LDR	PC, Prefetch_Addr
+	LDR	PC, Abort_Addr
+	NOP
+	LDR	PC, IRQ_Addr
+	LDR	PC, FIQ_Addr
+
+	.globl Reset_Addr
+Reset_Addr:	.long   _start 
+Undefined_Addr:	.long	Undefined_Handler
+SWI_Addr:	.long	SWI_Handler
+Prefetch_Addr:	.long	Prefetch_Handler
+Abort_Addr:	.long	Abort_Handler
+		.long	0	
+IRQ_Addr:	.long	IRQ_Handler
+FIQ_Addr:	.long	FIQ_Handler
+	
+/* The following handlers do not do anything useful */
+	.globl Undefined_Handler
+Undefined_Handler:	
+        B       Undefined_Handler
+	.globl SWI_Handler
+SWI_Handler:	
+        B       SWI_Handler 
+	.globl Prefetch_Handler
+Prefetch_Handler:	
+        B       Prefetch_Handler
+	.globl Abort_Handler
+Abort_Handler:	
+        B       Abort_Handler
+	.globl IRQ_Handler
+IRQ_Handler:	
+        B       IRQ_Handler
+	.globl FIQ_Handler
+FIQ_Handler:	
+        B       FIQ_Handler
+
+init2 :	
+/* --- Initialise stack pointer registers
+   Set up the ABORT stack pointer last and stay in SVC mode */
+    MOV     r0, #(Mode_ABORT | I_Bit | F_Bit)   /* No interrupts */
+    MSR     cpsr, r0
+    LDR     sp, =ABORT_Stack
+
+/* Enter IRQ mode and set up the IRQ stack pointer */
+    MOV     r0, #Mode_IRQ | I_Bit | F_Bit     /* No interrupts */
+    MSR     cpsr, r0
+    LDR     sp, =IRQ_Stack
+
+/* Enter FIQ mode and set up the FIQ stack pointer */
+    MOV     r0, #Mode_FIQ | I_Bit | F_Bit     /* No interrupts */
+    MSR     cpsr, r0
+    LDR     sp, =FIQ_Stack
+
+/* Set up the SVC stack pointer last and stay in SVC mode */
+    MOV     r0, #Mode_SVC | I_Bit | F_Bit     /* No interrupts */
+    MSR     cpsr, r0
+    LDR     sp, =SVC_Stack
+
+/* --- Now we enter the C code */
+
+    B	boot_card
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore
new file mode 100644
index 0000000000..282522db03
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am
new file mode 100644
index 0000000000..2120b13288
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/Makefile.am
@@ -0,0 +1,41 @@
+## 
+## $Id$
+## 
+
+AUTOMAKE_OPTIONS = foreign 1.4
+
+VPATH = @srcdir@:@srcdir@/../../../shared
+
+C_FILES = bsplibc.c bsppost.c bspstart.c exit.c bootcard.c main.c sbrk.c gnatinstallhandler.c
+C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o)
+
+S_FILES =
+S_O_FILES = $(S_FILES:%.S=$(ARCH)/%.o)
+
+startup_rel_OBJECTS = $(C_O_FILES) $(S_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(top_srcdir)/../../../../../../automake/lib.am
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+# USE_INIT_FINI tells main.c what C++ help we need.
+
+$(PGM): $(startup_rel_OBJECTS)
+	$(make-rel)
+
+$(PROJECT_RELEASE)/lib/linkcmds: linkcmds
+	$(INSTALL_DATA) $< $@
+
+TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/linkcmds
+
+all: $(ARCH) $(startup_rel_OBJECTS) $(PGM) $(TMPINSTALL_FILES)
+
+.PRECIOUS: $(PGM)
+
+EXTRA_DIST = linkcmds
+
+include $(top_srcdir)/../../../../../../automake/local.am
+
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c
new file mode 100644
index 0000000000..a3bfa2672a
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/bspstart.c
@@ -0,0 +1,164 @@
+/*-------------------------------------------------------------------------+
+| This file contains the ARM BSP startup package. It includes application,
+| board, and monitor specific initialization and configuration. The generic CPU
+| dependent initialization has been performed before this routine is invoked. 
++--------------------------------------------------------------------------+
+|
+| Copyright (c) 2000 Canon Research Centre France SA.
+| Emmanuel Raguet, mailto:raguet@crf.canon.fr
+|
+|   The license and distribution terms for this file may be
+|   found in found in the file LICENSE in this distribution or at
+|   http://www.OARcorp.com/rtems/license.html.
+|
++--------------------------------------------------------------------------*/
+
+
+#include <bsp.h>
+#include <uart.h>
+#include <libcsupport.h>
+#include <rtems/libio.h>
+
+/*-------------------------------------------------------------------------+
+| Global Variables
++--------------------------------------------------------------------------*/
+
+/*
+ * must be initialized with the right address
+ */
+volatile unsigned long *Regs = (unsigned long*)0xdeadbeef; /* Chip registers */
+
+extern rtems_unsigned32 _end;         /* End of BSS. Defined in 'linkcmds'. */
+/* 
+ * Size of heap if it is 0 it will be dynamically defined by memory size, 
+ * otherwise the value should be changed by binary patch 
+ */
+rtems_unsigned32 _heap_size = 0; 
+
+/* Size of stack used during initialization. Defined in 'start.s'.  */
+extern rtems_unsigned32 _stack_size;
+
+rtems_unsigned32 rtemsFreeMemStart;
+                         /* Address of start of free memory - should be updated
+                            after creating new partitions or regions.         */
+
+/* The original BSP configuration table from the application and our copy of it
+   with some changes. */
+
+extern rtems_configuration_table  Configuration;
+       rtems_configuration_table  BSP_Configuration;
+
+rtems_cpu_table Cpu_table;                     /* CPU configuration table.    */
+char            *rtems_progname;               /* Program name - from main(). */
+
+/*-------------------------------------------------------------------------+
+| External Prototypes
++--------------------------------------------------------------------------*/
+extern void rtems_irq_mngt_init(void);
+void bsp_libc_init( void *, unsigned32, int );
+void bsp_postdriver_hook(void);
+
+/*-------------------------------------------------------------------------+
+|         Function: bsp_pretasking_hook
+|      Description: BSP pretasking hook.  Called just before drivers are
+|                   initialized. Used to setup libc and install any BSP
+|                   extensions. NOTE: Must not use libc (to do io) from here,
+|                   since drivers are not yet initialized.
+| Global Variables: None.
+|        Arguments: None.
+|          Returns: Nothing. 
++--------------------------------------------------------------------------*/
+void bsp_pretasking_hook(void)
+{
+
+  if(_heap_size == 0)
+    {
+      _heap_size = 0x420000 - rtemsFreeMemStart;
+    }
+        
+  bsp_libc_init((void *)rtemsFreeMemStart, _heap_size, 0);
+  
+  rtemsFreeMemStart += _heap_size;           /* HEAP_SIZE  in KBytes */
+
+
+#ifdef RTEMS_DEBUG
+
+  rtems_debug_enable(RTEMS_DEBUG_ALL_MASK);
+
+#endif /* RTEMS_DEBUG */
+
+} /* bsp_pretasking_hook */
+ 
+
+/*-------------------------------------------------------------------------+
+|         Function: bsp_start
+|      Description: Called before main is invoked.
+| Global Variables: None.
+|        Arguments: None.
+|          Returns: Nothing. 
++--------------------------------------------------------------------------*/
+void bsp_start_default( void )
+{
+  rtemsFreeMemStart = (rtems_unsigned32)(&_end);  /* &_end+_stack_size;*/
+                                    /* set the value of start of free memory. */
+
+  /* If we don't have command line arguments set default program name. */
+
+  Cpu_table.pretasking_hook         = bsp_pretasking_hook; /* init libc, etc. */
+  Cpu_table.predriver_hook          = NULL;                /* use system's    */
+  Cpu_table.postdriver_hook         = bsp_postdriver_hook;
+  Cpu_table.idle_task               = NULL;
+                                          /* do not override system IDLE task */
+  Cpu_table.do_zero_of_workspace    = TRUE;
+  Cpu_table.interrupt_stack_size    = 4096;
+  Cpu_table.extra_mpci_receive_server_stack = 0;
+
+  /* Place RTEMS workspace at beginning of free memory. */
+  BSP_Configuration.work_space_start = (void *)rtemsFreeMemStart;
+ 
+   rtemsFreeMemStart += BSP_Configuration.work_space_size;
+
+  console_reserve_resources(&BSP_Configuration);
+
+  /*
+   * Init rtems exceptions management
+   */
+  rtems_exception_init_mngt();
+
+  /*
+   * Init rtems interrupt management
+   */
+  rtems_irq_mngt_init();
+
+  /*
+   *  The following information is very useful when debugging.
+   */
+
+#if 0
+  printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );
+  printk( "maximum_extensions = 0x%x\n", BSP_Configuration.maximum_extensions );
+  printk( "microseconds_per_tick = 0x%x\n",
+     BSP_Configuration.microseconds_per_tick );
+  printk( "ticks_per_timeslice = 0x%x\n",
+     BSP_Configuration.ticks_per_timeslice );
+  printk( "maximum_devices = 0x%x\n", BSP_Configuration.maximum_devices );
+  printk( "number_of_device_drivers = 0x%x\n",
+     BSP_Configuration.number_of_device_drivers );
+  printk( "Device_driver_table = 0x%x\n",
+     BSP_Configuration.Device_driver_table );
+
+  printk( "_heap_size = 0x%x\n", _heap_size );
+  /*  printk( "_stack_size = 0x%x\n", _stack_size );*/
+  printk( "rtemsFreeMemStart = 0x%x\n", rtemsFreeMemStart );
+  printk( "work_space_start = 0x%x\n", BSP_Configuration.work_space_start );
+  printk( "work_space_size = 0x%x\n", BSP_Configuration.work_space_size );
+#endif
+
+} /* bsp_start */
+
+/*
+ *  By making this a weak alias for bsp_start_default, a brave soul
+ *  can override the actual bsp_start routine used.
+ */
+
+void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c
new file mode 100644
index 0000000000..7eb3056585
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/exit.c
@@ -0,0 +1,48 @@
+/*-------------------------------------------------------------------------+
+| exit.c - ARM BSP 
++--------------------------------------------------------------------------+
+| Routines to shutdown and reboot the BSP.
++--------------------------------------------------------------------------+
+|
+| Copyright (c) 2000 Canon Research Centre France SA.
+| Emmanuel Raguet, mailto:raguet@crf.canon.fr
+|
+|   The license and distribution terms for this file may be
+|   found in found in the file LICENSE in this distribution or at
+|   http://www.OARcorp.com/rtems/license.html.
+|
++--------------------------------------------------------------------------*/
+
+
+#include <stdio.h>
+#include <bsp.h>
+#include <bspio.h>
+#include <rtems/libio.h>
+
+void rtemsReboot (void)
+{
+  asm volatile ("b _start");
+}
+
+void bsp_cleanup(void)
+{
+  unsigned char ch;
+  static   char line[]="\nEXECUTIVE SHUTDOWN! Any key to reboot...";
+  /*
+   * AT this point, the console driver is disconnected => we must
+   * use polled output/input. This is exactly what printk
+   * does.
+   */
+  printk("\n");
+  printk(line);
+  ch = BSP_poll_char();
+  rtemsReboot();
+}
+
+
+
+
+
+
+
+
diff --git a/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds
new file mode 100644
index 0000000000..f873318571
--- /dev/null
+++ b/c/src/lib/libbsp/arm/arm_bare_bsp/startup/linkcmds
@@ -0,0 +1,240 @@
+OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
+	      "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SEARCH_DIR(/usr/local/rtems-arm-dev-tools/arm-rtems/lib);
+MEMORY {
+	FLASH (rx)  : ORIGIN = 0x200000, LENGTH = 512K
+	RAM   (!rx) : ORIGIN = 0x400000, LENGTH = 128K
+}
+
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+/*  . = 0 + SIZEOF_HEADERS;*/
+  .hash          : { *(.hash)			} > FLASH 
+  .dynsym        : { *(.dynsym)			} > FLASH 
+  .dynstr        : { *(.dynstr)			} > FLASH 
+  .gnu.version   : { *(.gnu.version)		} > FLASH 
+  .gnu.version_d   : { *(.gnu.version_d)	} > FLASH 
+  .gnu.version_r   : { *(.gnu.version_r)	} > FLASH 
+  .rel.init      : { *(.rel.init)		} > FLASH 
+  .rela.init     : { *(.rela.init)		} > FLASH 
+  .rel.text      :
+    {
+      *(.rel.text)
+      *(.rel.text.*)
+      *(.rel.gnu.linkonce.t*)
+    } > FLASH 
+  .rela.text     :
+    {
+      *(.rela.text)
+      *(.rela.text.*)
+      *(.rela.gnu.linkonce.t*)
+    } > FLASH 
+  .rel.fini      : { *(.rel.fini)	} > FLASH 
+  .rela.fini     : { *(.rela.fini)	} > FLASH 
+  .rel.rodata    :
+    {
+      *(.rel.rodata)
+      *(.rel.rodata.*)
+      *(.rel.gnu.linkonce.r*)
+    } > FLASH 
+  .rela.rodata   :
+    {
+      *(.rela.rodata)
+      *(.rela.rodata.*)
+      *(.rela.gnu.linkonce.r*)
+    } > FLASH 
+  .rel.data      :
+    {
+      *(.rel.data)
+      *(.rel.data.*)
+      *(.rel.gnu.linkonce.d*)
+    } > FLASH 
+  .rela.data     :
+    {
+      *(.rela.data)
+      *(.rela.data.*)
+      *(.rela.gnu.linkonce.d*)
+    } > FLASH 
+  .rel.ctors     : { *(.rel.ctors)	} > FLASH 
+  .rela.ctors    : { *(.rela.ctors)	} > FLASH 
+  .rel.dtors     : { *(.rel.dtors)	} > FLASH 
+  .rela.dtors    : { *(.rela.dtors)	} > FLASH 
+  .rel.got       : { *(.rel.got)	} > FLASH 
+  .rela.got      : { *(.rela.got)	} > FLASH 
+  .rel.sdata     :
+    {
+      *(.rel.sdata)
+      *(.rel.sdata.*)
+      *(.rel.gnu.linkonce.s*)
+    } > FLASH 
+  .rela.sdata     :
+    {
+      *(.rela.sdata)
+      *(.rela.sdata.*)
+      *(.rela.gnu.linkonce.s*)
+    } > FLASH 
+  .rel.sbss      : { *(.rel.sbss)		} > FLASH 
+  .rela.sbss     : { *(.rela.sbss)		} > FLASH 
+  .rel.bss       : { *(.rel.bss)		} > FLASH 
+  .rela.bss      : { *(.rela.bss)		} > FLASH 
+  .rel.plt       : { *(.rel.plt)		} > FLASH 
+  .rela.plt      : { *(.rela.plt)		} > FLASH 
+  .init          : 
+  { 
+    KEEP (*(.init))
+  } > FLASH   /*=0*/
+  .plt      : { *(.plt)	} > FLASH 
+  .text      :
+  {
+    *(.text)
+    *(.text.*)
+    *(.stub)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.gnu.linkonce.t*)
+    *(.glue_7t) *(.glue_7)
+  } > FLASH  /*=0*/
+  _etext = .;
+  PROVIDE (etext = .);
+  .fini      :
+  {
+    KEEP (*(.fini))
+  } > FLASH  /*=0*/
+  .rodata   : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r*) } > FLASH
+  .rodata1   : { *(.rodata1) } > FLASH
+  _erodata = ABSOLUTE(.);
+  PROVIDE (erodata =  ABSOLUTE(.));
+  /* Adjust the address for the data segment.  We want to adjust up to
+     the same address within the page on the next page up.  */
+  . = ALIGN(256);
+  _begdata = ALIGN(256);
+  .arm_end_text :
+  {
+    . = ALIGN(256);
+    _initdata = ALIGN(256);
+  } > FLASH	
+  .data : AT (_begdata)
+  {
+    *(.data)
+    *(.data.*)
+    *(.gnu.linkonce.d*)
+    SORT(CONSTRUCTORS)
+  } > RAM 
+  .data1   : { *(.data1) } > RAM
+  .eh_frame : { *(.eh_frame) } > RAM
+  .gcc_except_table : { *(.gcc_except_table) } > RAM
+  .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))
+  } > RAM
+   .dtors         :
+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  } > RAM
+  .got           : { *(.got.plt) *(.got) } > RAM
+  .dynamic       : { *(.dynamic) } > RAM
+  /* 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.*)
+  } > RAM
+  .arm_data : 
+  {  
+  _edata = .; 
+  __bss_start = .;
+  __bss_start__ = .;
+  } > RAM
+  .sbss      :
+  {
+    *(.dynsbss)
+    *(.sbss)
+    *(.sbss.*)
+    *(.scommon)
+  } > RAM
+  .bss       :
+  {
+   *(.dynbss)
+   *(.bss)
+   *(.bss.*)
+   *(COMMON)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.  */
+   . = ALIGN(32 / 8);
+  } > RAM
+  . = ALIGN(32 / 8);
+  .arm_end :
+  {
+  _end = .; 
+  _bss_end__ = . ; 
+  __bss_end__ = . ; 
+  __end__ = . ;
+  } > RAM 
+  /* Stabs debugging sections.  */
+  .stab 0 : { *(.stab) } 
+  .stabstr 0 : { *(.stabstr) } 
+  .stab.excl 0 : { *(.stab.excl) } 
+  .stab.exclstr 0 : { *(.stab.exclstr) }
+  .stab.index 0 : { *(.stab.index) } 
+  .stab.indexstr 0 : { *(.stab.indexstr) } 
+  .comment 0 : { *(.comment) }
+  /* 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) } 
+  /*.stack 0x80000 : { _stack = .; *(.stack) }*/
+  /* These must appear regardless of  .  */
+}
+
+
+
+