[PATCH 5/7] OR1k shared and generic_or1k BSP link script rewrite

Jakob Viketoft jakob.viketoft at aacmicrotec.com
Fri Feb 19 09:14:05 UTC 2016


diff --git a/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds b/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds
index cef99d3..3a34186 100644
--- a/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds
+++ b/c/src/lib/libbsp/or1k/generic_or1k/startup/linkcmds
@@ -8,16 +8,22 @@
 
 /*
  * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary at gmail.com>
+ * Copyright (c) 2015 ÅAC Microtec AB <www.aacmicrotec.com>
+ *                    Jakob Viketoft <jakob.viketoft at aacmicrotec.com>
  *
  * The license and distribution terms for this file may be
  * found in the file LICENSE in this distribution or at
  * http://www.rtems.org/license/LICENSE
  */
 
+/* Set up system characteristics */
+HeapSize = 0;
+StackSize = 16K;
+
 MEMORY
   {
-      VECTOR_RAM     (AIW) : ORIGIN = 0x0       , LENGTH = 8260
-      RAM   : org = 0x00002048, l = 0x1FFDFB8
+      VECTOR_RAM (AIW)    : ORIGIN = 0x00000000, LENGTH = 8K + 128
+      RAM                 : ORIGIN = 0x00002080, LENGTH = 32M - 8K - 128
       UNEXPECTED_SECTIONS : ORIGIN = 0xffffffff, LENGTH = 0
   }
 
@@ -35,7 +41,5 @@ REGION_ALIAS ("REGION_BSS", RAM);
 REGION_ALIAS ("REGION_WORK", RAM);
 REGION_ALIAS ("REGION_STACK", RAM);
 
-bsp_section_vector_begin = 0;
-bsp_section_stack_begin = 0x1FFDFB8;
 
 INCLUDE linkcmds.base
diff --git a/c/src/lib/libbsp/or1k/shared/include/linker-symbols.h b/c/src/lib/libbsp/or1k/shared/include/linker-symbols.h
index f0f8377..bae619a 100644
--- a/c/src/lib/libbsp/or1k/shared/include/linker-symbols.h
+++ b/c/src/lib/libbsp/or1k/shared/include/linker-symbols.h
@@ -1,5 +1,5 @@
-#ifndef LIBBSP_OR1k_SHARED_LINKER_SYMBOLS_H
-#define LIBBSP_OR1k_SHARED_LINKER_SYMBOLS_H
+#ifndef LIBBSP_OR1K_SHARED_LINKER_SYMBOLS_H
+#define LIBBSP_OR1K_SHARED_LINKER_SYMBOLS_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -59,10 +59,6 @@ LINKER_SYMBOL(bsp_section_stack_begin)
 LINKER_SYMBOL(bsp_section_stack_end)
 LINKER_SYMBOL(bsp_section_stack_size)
 
-LINKER_SYMBOL(bsp_vector_table_begin)
-LINKER_SYMBOL(bsp_vector_table_end)
-LINKER_SYMBOL(bsp_vector_table_size)
-
 LINKER_SYMBOL(bsp_start_vector_table_begin)
 LINKER_SYMBOL(bsp_start_vector_table_end)
 LINKER_SYMBOL(bsp_start_vector_table_size)
diff --git a/c/src/lib/libbsp/or1k/shared/startup/linkcmds.base b/c/src/lib/libbsp/or1k/shared/startup/linkcmds.base
index 31bb92d..4651d4b 100644
--- a/c/src/lib/libbsp/or1k/shared/startup/linkcmds.base
+++ b/c/src/lib/libbsp/or1k/shared/startup/linkcmds.base
@@ -8,6 +8,7 @@
 
 /*
  * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary at gmail.com>
+ * COPYRIGHT (c) 2015 ÅAC Microtec AB <www.aacmicrotec.com>
+ *                    Jakob Viketoft <jakob.viketoft at aacmicrotec.com>
  *
  * The license and distribution terms for this file may be
  * found in the file LICENSE in this distribution or at
@@ -19,35 +20,49 @@ OUTPUT_ARCH (or1k)
 ENTRY (_start)
 
 /*
- * Global symbols that may be defined externally
+ * The memory map looks like this:
+ * +--------------------+ <- low memory
+ * | .vector            | exception vectors and exception
+ * |                    | handler's table
+ * +--------------------+
+ * | .start             | entry point (setup) code
+ * +--------------------+
+ * | .text              |
+ * |        init        |
+ * |        fini        |
+ * |        ctor list   | the ctor and dtor lists are for
+ * |        dtor list   | C++ support
+ * |        eh_frame    |
+ * |        etext       |
+ * +--------------------+
+ * | .tdata             | TLS data
+ * +--------------------+
+ * | .tbss              | TLS bss
+ * +--------------------+
+ * | .data              | initialized data goes here
+ * +--------------------+
+ * | .bss               | section cleared by entry code
+ * +--------------------+
+ * | .stack             |
+ * +--------------------+ <- high memory (top of stack)
  */
 
-bsp_start_vector_table_begin = 0x1F00;
-bsp_vector_table_size = DEFINED (bsp_vector_table_size) ? bsp_vector_table_size
-: 8260;
-/* 8192 for raw vector table, and 17 * 4 for handlers vector. */
+/* Make sure we have predefined some crucial variables */
+StackSize = DEFINED (StackSize) ? StackSize : 16K;
+HeapSize = DEFINED (HeapSize) ? HeapSize : 0;
 
-bsp_section_xbarrier_align  = DEFINED (bsp_section_xbarrier_align) ? bsp_section_xbarrier_align : 1;
-bsp_section_robarrier_align = DEFINED (bsp_section_robarrier_align) ? bsp_section_robarrier_align : 1;
-bsp_section_rwbarrier_align = DEFINED (bsp_section_rwbarrier_align) ? bsp_section_rwbarrier_align : 1;
-
-bsp_stack_align = DEFINED (bsp_stack_align) ? bsp_stack_align : 8;
-
-bsp_stack_main_size = DEFINED (bsp_stack_main_size) ? bsp_stack_main_size : 0;
-bsp_stack_main_size = ALIGN (bsp_stack_main_size, bsp_stack_align);
-
-bsp_processor_count = DEFINED (bsp_processor_count) ? bsp_processor_count : 1;
+bsp_section_stack_size = DEFINED (bsp_section_stack_size) ? bsp_section_stack_size : 0x4000;
 
 SECTIONS {
 
   .vector : ALIGN_WITH_INPUT {
+    bsp_section_vector_begin = .;
     *(.vector)
-    . = ALIGN(bsp_vector_table_size);
+    . = ALIGN(LENGTH(REGION_VECTOR));
     bsp_section_vector_end = .;
   } > REGION_VECTOR AT > REGION_VECTOR
+
   bsp_section_vector_size = bsp_section_vector_end - bsp_section_vector_begin;
-  bsp_vector_table_begin = bsp_section_vector_begin;
-  bsp_vector_table_end = bsp_vector_table_begin + bsp_vector_table_size;
 
   .start : ALIGN_WITH_INPUT {
     bsp_section_start_begin = .;
@@ -55,225 +70,113 @@ SECTIONS {
     KEEP (*(.bsp_start_data))
     bsp_section_start_end = .;
   } > REGION_START AT > REGION_START
-  bsp_section_start_size = bsp_section_start_end - bsp_section_start_begin;
 
-.xbarrier : ALIGN_WITH_INPUT {
-    . = ALIGN (bsp_section_xbarrier_align);
-  } > REGION_VECTOR AT > REGION_VECTOR
+  bsp_section_start_size = bsp_section_start_end - bsp_section_start_begin;
 
-.text : ALIGN_WITH_INPUT {
+  .text : ALIGN_WITH_INPUT {
     bsp_section_text_begin = .;
-    *(.text.unlikely .text.*_unlikely)
-    *(.text .stub .text.* .gnu.linkonce.t.*)
-    /* .gnu.warning sections are handled specially by elf32.em.  */
-    *(.gnu.warning)
-    *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
-  } > REGION_TEXT AT > REGION_TEXT_LOAD
-  .init : ALIGN_WITH_INPUT {
-    KEEP (*(.init))
-  } > REGION_TEXT AT > REGION_TEXT_LOAD
-  .fini : ALIGN_WITH_INPUT {
-    KEEP (*(.fini))
+    *(.text*)
+
+    /*
+     * C++ constructors/destructors
+     */
+    *(.gnu.linkonce.t.*)
+    
+    /*
+     * Initialization and finalization code.
+     *
+     * Various files can provide initialization and finalization
+     * functions.  crtbegin.o and crtend.o are two instances. The
+     * body of these functions are in .init and .fini sections. We
+     * accumulate the bodies here, and prepend function prologues
+     * from crti.o and function epilogues from crtn.o. crti.o must
+     * be linked first; crtn.o must be linked last.  Because these
+     * are wildcards, it doesn't matter if the user does not
+     * actually link against crti.o and crtn.o; the linker won't
+     * look for a file to match a wildcard.  The wildcard also
+     * means that it doesn't matter which directory crti.o and
+     * crtn.o are in. 
+     */
+    PROVIDE (_init = .);
+    *crti.o(.init)
+    *(.init)
+    *crtn.o(.init)
+    PROVIDE (_fini = .);
+    *crti.o(.fini)
+    *(.fini)
+    *crtn.o(.fini)
+
+    /*
+     * C++ constructors/destructors
+     *
+     * gcc uses crtbegin.o to find the start of the constructors
+     * and destructors 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. The
+     * constructor and destructor list are terminated in
+     * crtend.o.  The same comments apply to it.
+     */
+    . = ALIGN (16);
+    *crtbegin.o(.ctors)
+    *(.ctors)
+    *crtend.o(.ctors)
+    *crtbegin.o(.dtors)
+    *(.dtors)
+    *crtend.o(.dtors)
+    
+    /*
+     * Exception frame info
+     */
+    . = ALIGN (16);
+    *(.eh_frame)
+    
+    /*
+     * Read-only data
+     */
+    . = ALIGN (16);
+    _rodata_start = .;
+    *(.rodata*)
+    *(.gnu.linkonce.r*)
+    
+     . = ALIGN (16);
+    PROVIDE (_etext = .);
+
     bsp_section_text_end = .;
   } > REGION_TEXT AT > REGION_TEXT_LOAD
+
   bsp_section_text_size = bsp_section_text_end - bsp_section_text_begin;
   bsp_section_text_load_begin = LOADADDR (.text);
   bsp_section_text_load_end = bsp_section_text_load_begin + bsp_section_text_size;
 
-.robarrier : ALIGN_WITH_INPUT {
-    . = ALIGN (bsp_section_robarrier_align);
-  } > REGION_RODATA AT > REGION_RODATA
-
-.rodata : ALIGN_WITH_INPUT {
-    bsp_section_rodata_begin = .;
-    *(.rodata .rodata.* .gnu.linkonce.r.*)
-  } > REGION_RODATA AT > REGION_RODATA_LOAD
-.eh_frame : ALIGN_WITH_INPUT {
-               KEEP (*(.eh_frame))
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .gcc_except_table : ALIGN_WITH_INPUT {
-               *(.gcc_except_table .gcc_except_table.*)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .tdata : ALIGN_WITH_INPUT {
-               _TLS_Data_begin = .;
-               *(.tdata .tdata.* .gnu.linkonce.td.*)
-               _TLS_Data_end = .;
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .tbss : ALIGN_WITH_INPUT {
-               _TLS_BSS_begin = .;
-               *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon)
-               _TLS_BSS_end = .;
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       _TLS_Data_size = _TLS_Data_end - _TLS_Data_begin;
-       _TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin;
-       _TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin;
-       _TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin;
-       _TLS_Size = _TLS_BSS_end - _TLS_Data_begin;
-       _TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss));
-       .preinit_array : ALIGN_WITH_INPUT {
-               PROVIDE_HIDDEN (__preinit_array_start = .);
-               KEEP (*(.preinit_array))
-               PROVIDE_HIDDEN (__preinit_array_end = .);
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .init_array : ALIGN_WITH_INPUT {
-               PROVIDE_HIDDEN (__init_array_start = .);
-               KEEP (*(SORT(.init_array.*)))
-               KEEP (*(.init_array))
-               PROVIDE_HIDDEN (__init_array_end = .);
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .fini_array : ALIGN_WITH_INPUT {
-               PROVIDE_HIDDEN (__fini_array_start = .);
-               KEEP (*(.fini_array))
-               KEEP (*(SORT(.fini_array.*)))
-               PROVIDE_HIDDEN (__fini_array_end = .);
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .ctors : ALIGN_WITH_INPUT {
-               /* 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))
-               KEEP (*crtbegin?.o(.ctors))
-               /* We don't want to include the .ctor section 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 *crtend?.o ) .ctors))
-               KEEP (*(SORT(.ctors.*)))
-               KEEP (*(.ctors))
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .dtors : ALIGN_WITH_INPUT {
-               KEEP (*crtbegin.o(.dtors))
-               KEEP (*crtbegin?.o(.dtors))
-               KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
-               KEEP (*(SORT(.dtors.*)))
-               KEEP (*(.dtors))
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .data.rel.ro : ALIGN_WITH_INPUT {
-               *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*)
-               *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .jcr : ALIGN_WITH_INPUT {
-               KEEP (*(.jcr))
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .interp : ALIGN_WITH_INPUT {
-               *(.interp)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .note.gnu.build-id : ALIGN_WITH_INPUT {
-               *(.note.gnu.build-id)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .hash : ALIGN_WITH_INPUT {
-               *(.hash)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .gnu.hash : ALIGN_WITH_INPUT {
-               *(.gnu.hash)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .dynsym : ALIGN_WITH_INPUT {
-               *(.dynsym)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .dynstr : ALIGN_WITH_INPUT {
-               *(.dynstr)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .gnu.version : ALIGN_WITH_INPUT {
-               *(.gnu.version)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .gnu.version_d : ALIGN_WITH_INPUT {
-               *(.gnu.version_d)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .gnu.version_r : ALIGN_WITH_INPUT {
-               *(.gnu.version_r)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .rel.dyn : ALIGN_WITH_INPUT {
-               *(.rel.init)
-               *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
-               *(.rel.fini)
-               *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
-               *(.rel.data.rel.ro* .rel.gnu.linkonce.d.rel.ro.*)
-               *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
-               *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
-               *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
-               *(.rel.ctors)
-               *(.rel.dtors)
-               *(.rel.got)
-               *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
-               PROVIDE_HIDDEN (__rel_iplt_start = .);
-               *(.rel.iplt)
-               PROVIDE_HIDDEN (__rel_iplt_end = .);
-               PROVIDE_HIDDEN (__rela_iplt_start = .);
-               PROVIDE_HIDDEN (__rela_iplt_end = .);
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .rela.dyn : ALIGN_WITH_INPUT {
-               *(.rela.init)
-               *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
-               *(.rela.fini)
-               *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
-               *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
-               *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
-               *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
-               *(.rela.ctors)
-               *(.rela.dtors)
-               *(.rela.got)
-               *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
-               PROVIDE_HIDDEN (__rel_iplt_start = .);
-               PROVIDE_HIDDEN (__rel_iplt_end = .);
-               PROVIDE_HIDDEN (__rela_iplt_start = .);
-               *(.rela.iplt)
-               PROVIDE_HIDDEN (__rela_iplt_end = .);
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .rel.plt : ALIGN_WITH_INPUT {
-               *(.rel.plt)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .rela.plt : ALIGN_WITH_INPUT {
-               *(.rela.plt)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .plt : ALIGN_WITH_INPUT {
-               *(.plt)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .iplt : ALIGN_WITH_INPUT {
-               *(.iplt)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .dynamic : ALIGN_WITH_INPUT {
-               *(.dynamic)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .got : ALIGN_WITH_INPUT {
-               *(.got.plt) *(.igot.plt) *(.got) *(.igot)
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-       .rtemsroset : ALIGN_WITH_INPUT {
-               /* Special FreeBSD linker set sections */
-               __start_set_sysctl_set = .;
-               *(set_sysctl_*);
-               __stop_set_sysctl_set = .;
-               *(set_domain_*);
-               *(set_pseudo_*);
-
-               KEEP (*(SORT(.rtemsroset.*)))
-               bsp_section_rodata_end = .;
-       } > REGION_RODATA AT > REGION_RODATA_LOAD
-  bsp_section_rodata_size = bsp_section_rodata_end - bsp_section_rodata_begin;
-  bsp_section_rodata_load_begin = LOADADDR (.rodata);
-  bsp_section_rodata_load_end = bsp_section_rodata_load_begin + bsp_section_rodata_size;
-
-.rwbarrier : ALIGN_WITH_INPUT {
-    . = ALIGN (bsp_section_rwbarrier_align);
-  } > REGION_DATA AT > REGION_DATA
-
-.data : ALIGN_WITH_INPUT {
+  .tdata : ALIGN_WITH_INPUT {
+    _TLS_Data_begin = .;
+    *(.tdata .tdata.* .gnu.linkonce.td.*)
+    _TLS_Data_end = .;
+   } > REGION_RODATA AT > REGION_RODATA_LOAD
+
+   .tbss : ALIGN_WITH_INPUT {
+     _TLS_BSS_begin = .;
+     *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon)
+     _TLS_BSS_end = .;
+   } > REGION_RODATA AT > REGION_RODATA_LOAD
+
+   _TLS_Data_size = _TLS_Data_end - _TLS_Data_begin;
+   _TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin;
+   _TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin;
+   _TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin;
+   _TLS_Size = _TLS_BSS_end - _TLS_Data_begin;
+   _TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss));
+
+  .data : ALIGN_WITH_INPUT {
     bsp_section_data_begin = .;
     *(.data .data.* .gnu.linkonce.d.*)
-    SORT(CONSTRUCTORS)
-  } > REGION_DATA AT > REGION_DATA_LOAD
-  .data1 : ALIGN_WITH_INPUT {
-    *(.data1)
-  } > REGION_DATA AT > REGION_DATA_LOAD
-  .rtemsrwset : ALIGN_WITH_INPUT {
-    KEEP (*(SORT(.rtemsrwset.*)))
+    *(.gcc_except_table*)
+    *(.jcr)
     bsp_section_data_end = .;
   } > REGION_DATA AT > REGION_DATA_LOAD
+
   bsp_section_data_size = bsp_section_data_end - bsp_section_data_begin;
   bsp_section_data_load_begin = LOADADDR (.data);
   bsp_section_data_load_end = bsp_section_data_load_begin + bsp_section_data_size;
@@ -285,26 +188,34 @@ SECTIONS {
     *(COMMON)
     bsp_section_bss_end = .;
   } > REGION_BSS AT > REGION_BSS
+
   bsp_section_bss_size = bsp_section_bss_end - bsp_section_bss_begin;
 
-.work : ALIGN_WITH_INPUT {
+  .work : ALIGN_WITH_INPUT {
     /*
-     * The work section will occupy the remaining REGION_WORK region and
-     * contains the RTEMS work space and heap.
+     * The work section will occupy region REGION_WORK which in turn is most of
+     * the rest of RAM, barring the stack. We probably can't stop the stack
+     * from growing down into REGION_WORK, but we can at least stop REGION_WORK
+     * from taking space from the stack.
      */
     bsp_section_work_begin = .;
-    . += ORIGIN (REGION_WORK) + LENGTH (REGION_WORK) - ABSOLUTE (.);
+    . += ORIGIN (REGION_WORK) + LENGTH (REGION_WORK) - StackSize - ABSOLUTE (.);
     bsp_section_work_end = .;
   } > REGION_WORK AT > REGION_WORK
+
   bsp_section_work_size = bsp_section_work_end - bsp_section_work_begin;
 
   .stack : ALIGN_WITH_INPUT {
     bsp_section_stack_end = .;
+    /* Eat up the rest of the RAM for the stack */
+    . += ORIGIN (REGION_STACK) + LENGTH (REGION_STACK) - ABSOLUTE (.);
+    bsp_section_stack_begin = .;
   } > REGION_STACK AT > REGION_STACK
+
+  /* The stack grows downwards */
   bsp_section_stack_size = bsp_section_stack_begin - bsp_section_stack_end;
 
   RamBase = ORIGIN (REGION_WORK);
   RamSize = LENGTH (REGION_WORK);
   WorkAreaBase = bsp_section_work_begin;
-  HeapSize = 0;
 }


Jakob Viketoft
Senior Engineer in RTL and embedded software

ÅAC Microtec AB
Dag Hammarskjölds väg 48
SE-751 83 Uppsala, Sweden

T: +46 702 80 95 97
http://www.aacmicrotec.com


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