X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Fattr.h;h=bfcb705edb6c1d350fda9c827d8ecda22bb9cc07;hb=7bc315bf74dee2d7a4470753cc5a216bf49d87df;hp=3fd3b18fbde5d84f3a43a4dc02b764a9e012351a;hpb=c22fe24a0da896a52dbc3882390ec18a440ef56a;p=bertos.git

diff --git a/bertos/cpu/attr.h b/bertos/cpu/attr.h
index 3fd3b18f..bfcb705e 100644
--- a/bertos/cpu/attr.h
+++ b/bertos/cpu/attr.h
@@ -34,7 +34,7 @@
  * \brief CPU-specific attributes.
  *
  * \author Giovanni Bajo <rasky@develer.com>
- * \author Bernardo Innocenti <bernie@develer.com>
+ * \author Bernie Innocenti <bernie@codewiz.org>
  * \author Stefano Fedrigo <aleph@develer.com>
  * \author Francesco Sacchi <batt@develer.com>
  */
@@ -44,8 +44,8 @@
 #include "detect.h"
 
 #include "cfg/cfg_attr.h"      /* CONFIG_FAST_MEM */
+#include "cfg/cfg_arch.h"      /* ARCH_EMUL */
 #include <cfg/compiler.h>      /* for uintXX_t */
-#include "cfg/cfg_arch.h"   /* ARCH_EMUL */
 
 
 /**
@@ -74,6 +74,9 @@
 	#define CPU_BYTE_ORDER          CPU_LITTLE_ENDIAN
 	#define CPU_HARVARD		0
 
+	/// Valid pointers should be >= than this value (used for debug)
+	#define CPU_RAM_START		0x100
+
 #elif CPU_X86
 
 	#define NOP                     asm volatile ("nop")
@@ -96,6 +99,9 @@
 		#define CPU_REG_BITS    32
 	#endif
 
+	/// Valid pointers should be >= than this value (used for debug)
+	#define CPU_RAM_START		0x1000
+
 #elif CPU_ARM
 
 	/* Register counts include SREG too */
@@ -106,6 +112,9 @@
 	#define CPU_SP_ON_EMPTY_SLOT   0
 	#define CPU_HARVARD            0
 
+	/// Valid pointers should be >= than this value (used for debug)
+	#define CPU_RAM_START		0x200
+
 	#ifdef __IAR_SYSTEMS_ICC__
 		#warning Check CPU_BYTE_ORDER
 		#define CPU_BYTE_ORDER (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
@@ -115,9 +124,9 @@
 	#else /* GCC and compatibles */
 
 		#if defined(__ARMEB__)
-  			#define CPU_BYTE_ORDER CPU_BIG_ENDIAN
-  		#elif defined(__ARMEL__)
-  			#define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
+			#define CPU_BYTE_ORDER CPU_BIG_ENDIAN
+		#elif defined(__ARMEL__)
+			#define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
 		#else
 			#error Unable to detect ARM endianness!
   		#endif
@@ -125,17 +134,17 @@
 		#define NOP            asm volatile ("mov r0,r0" ::)
 
 		/**
-	 	 * Initialization value for registers in stack frame.
-	 	 * The register index is not directly corrispondent to CPU
-	 	 * register numbers, but is related to how are pushed to
-	 	 * stack (\see asm_switch_context).
+		 * Initialization value for registers in stack frame.
+		 * The register index is not directly corrispondent to CPU
+		 * register numbers, but is related to how are pushed to
+		 * stack (\see asm_switch_context).
 		 * Index (CPU_SAVED_REGS_CNT - 1) is the CPSR register,
 		 * the initial value is set to:
 		 * - All flags (N, Z, C, V) set to 0.
 		 * - IRQ and FIQ enabled.
 		 * - ARM state.
 		 * - CPU in Supervisor Mode (SVC).
-	 	 */
+		 */
 		#define CPU_REG_INIT_VALUE(reg) (reg == (CPU_SAVED_REGS_CNT - 1) ? 0x13 : 0)
 
 		#if CONFIG_FAST_MEM
@@ -174,12 +183,15 @@
 	/* Register counts include SREG too */
 	#define CPU_REG_BITS           (CPU_PPC32 ? 32 : 64)
 	#define CPU_REGS_CNT           FIXME
-	#define CPU_SAVED_REGS_CNT     FIXME
+	#define CPU_SAVED_REGS_CNT     1  // FIXME
 	#define CPU_STACK_GROWS_UPWARD 0  //FIXME
 	#define CPU_SP_ON_EMPTY_SLOT   0  //FIXME
 	#define CPU_BYTE_ORDER         (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
 	#define CPU_HARVARD            0
 
+	/// Valid pointers should be >= than this value (used for debug)
+	#define CPU_RAM_START		0x1000
+
 #elif CPU_DSP56K
 
 	#define NOP                     asm(nop)
@@ -199,6 +211,9 @@
 	#define SIZEOF_LONG         2
 	#define SIZEOF_PTR          1
 
+	/// Valid pointers should be >= than this value (used for debug)
+	#define CPU_RAM_START		0x200
+
 #elif CPU_AVR
 
 	#define NOP           asm volatile ("nop" ::)
@@ -220,6 +235,9 @@
 	 */
 	#define CPU_REG_INIT_VALUE(reg) (reg == 0 ? 0x80 : 0)
 
+	/// Valid pointers should be >= than this value (used for debug)
+	#define CPU_RAM_START		0x100
+
 #else
 	#error No CPU_... defined.
 #endif
@@ -300,7 +318,7 @@
 
 #elif CPU_AVR
 	/*
-	 * In AVR, the addresses are pushed into the stack as little-endian, while
+	 * On AVR, addresses are pushed into the stack as little-endian, while
 	 * memory accesses are big-endian (actually, it's a 8-bit CPU, so there is
 	 * no natural endianess).
 	 */