itoa() from Ryan Sundberg

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5741 42af7a65-404d-4744-a932-0658087f49c3

configs/open1788/scripts/memory.ld

@@ -52,7 +52,8 @@
  *   ------- ----   Padded to 4KB
  *   0x10000 1000:  User .data region.  Size is variable.
  *   ------- ----   User .bss region  Size is variable.
- *   ------- ----   Beginning of kernel heap
+ *   ------- ----   Beginning of kernel heap.  Size determined by
+ *                  CONFIG_MM_KERNEL_HEAPSIZE.
  *   0x10000 8000:  Beginning of user heap.  Can vary with other settings.
  *   0x10001 0000:  End+1 of CPU RAM
  */

configs/sam3u-ek/scripts/memory.ld

@@ -42,7 +42,21 @@
  *
  * For MPU support, the kernel-mode NuttX section is assumed to be 64Kb of
  * FLASH and 4Kb of SRAM.  That, of course, can be optimized as needed (See
- * also configs/sam3u-ek/scripts/kernel-space.ld).
+ * also configs/open1788/scripts/kernel-space.ld).  A detailed memory map
+ * for the CPU SRAM region is as follows:
+ *
+ *   0x20000 0000:  Kernel .data region.  Typical size: 0.1KB
+ *   ------- ----   Kernel .bss  region.  Typical size: 1.8KB
+ *   ------- ----   Kernel IDLE thread stack (approximate).  Size is
+ *                  determined by CONFIG_IDLETHREAD_STACKSIZE and
+ *                  adjustments for alignment.  Typical is 1KB.
+ *   ------- ----   Padded to 4KB
+ *   0x20000 1000:  User .data region.  Size is variable.
+ *   ------- ----   User .bss region  Size is variable.
+ *   ------- ----   Beginning of kernel heap.  Size determined by
+ *                  CONFIG_MM_KERNEL_HEAPSIZE.
+ *   ------- ----   Beginning of user heap.  Can vary with other settings.
+ *   0x20000 8000:  End+1 of CPU RAM
  */
 
 MEMORY
@@ -61,92 +75,3 @@ MEMORY
 
     sram2 (rwx) : ORIGIN = 0x20080000, LENGTH = 16K
 }
-
-/* Make sure that the critical memory management functions are in user-space.
- * Currently, the plan is that the memory manager will reside in user-space
- * but be usable both by kernel- and user-space code
- */
-
-EXTERN(umm_initialize)
-EXTERN(umm_addregion)
-EXTERN(umm_trysemaphore)
-EXTERN(umm_givesemaphore)
-
-EXTERN(malloc)
-EXTERN(realloc)
-EXTERN(zalloc)
-EXTERN(free)
-
-OUTPUT_ARCH(arm)
-
-SECTIONS
-{
-	.userspace : {
-		*(.userspace)
-	} > uflash
-
-	.text : {
-		_stext = ABSOLUTE(.);
-		*(.vectors)
-		*(.text .text.*)
-		*(.fixup)
-		*(.gnu.warning)
-		*(.rodata .rodata.*)
-		*(.gnu.linkonce.t.*)
-		*(.glue_7)
-		*(.glue_7t)
-		*(.got)
-		*(.gcc_except_table)
-		*(.gnu.linkonce.r.*)
-		_etext = ABSOLUTE(.);
-	} > uflash
-
-	.init_section : {
-		_sinit = ABSOLUTE(.);
-		*(.init_array .init_array.*)
-		_einit = ABSOLUTE(.);
-	} > uflash
-
-	.ARM.extab : {
-		*(.ARM.extab*)
-	} > uflash
-
-	__exidx_start = ABSOLUTE(.);
-	.ARM.exidx : {
-		*(.ARM.exidx*)
-	} > uflash
-	__exidx_end = ABSOLUTE(.);
-
-	_eronly = ABSOLUTE(.);
-
-	.data : {
-		_sdata = ABSOLUTE(.);
-		*(.data .data.*)
-		*(.gnu.linkonce.d.*)
-		CONSTRUCTORS
-		_edata = ABSOLUTE(.);
-	} > usram1 AT > uflash
-
-	.bss : {
-		_sbss = ABSOLUTE(.);
-		*(.bss .bss.*)
-		*(.gnu.linkonce.b.*)
-		*(COMMON)
-		_ebss = ABSOLUTE(.);
-	} > usram1
-
-	/* 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) }
-	.debug_abbrev 0 : { *(.debug_abbrev) }
-	.debug_info 0 : { *(.debug_info) }
-	.debug_line 0 : { *(.debug_line) }
-	.debug_pubnames 0 : { *(.debug_pubnames) }
-	.debug_aranges 0 : { *(.debug_aranges) }
-}