X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=cfg%2Fcpu.h;h=8a9457290f9492740a0435dcb96ff681a85dbd36;hb=50cc352d570076bb1c5e6a79764da95681ef0887;hp=949282150a6f54ebc65dbfc0b87b1032a7353203;hpb=f7759618132fca8a34d8a02dc6d0acf0474e6ca1;p=bertos.git

diff --git a/cfg/cpu.h b/cfg/cpu.h
old mode 100755
new mode 100644
index 94928215..8a945729
--- a/cfg/cpu.h
+++ b/cfg/cpu.h
@@ -1,82 +1,42 @@
-/*!
+/**
  * \file
  * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
  * Copyright 2004, 2005 Develer S.r.l. (http://www.develer.com/)
  * Copyright 2004 Giovanni Bajo
- * This file is part of DevLib - See README.devlib for information.
+ *
  * -->
  *
  * \brief CPU-specific definitions
  *
- * \version $Id$
- *
  * \author Giovanni Bajo <rasky@develer.com>
  * \author Bernardo Innocenti <bernie@develer.com>
  * \author Stefano Fedrigo <aleph@develer.com>
  */
-
-/*#*
- *#* $Log$
- *#* Revision 1.14  2006/07/19 12:54:12  bernie
- *#* Documentation fixes.
- *#*
- *#* Revision 1.13  2006/03/27 04:49:23  bernie
- *#* CPU_IDLE(): Fix for new emulator.
- *#*
- *#* Revision 1.12  2006/03/21 10:52:39  bernie
- *#* Update ARM support.
- *#*
- *#* Revision 1.11  2006/03/20 17:49:00  bernie
- *#* Spacing fix.
- *#*
- *#* Revision 1.10  2006/02/24 01:17:30  bernie
- *#* CPU_SAVED_REGS_CNT: Declare for x86/x86_64.
- *#*
- *#* Revision 1.9  2006/02/23 09:08:43  bernie
- *#* Add note for a frequently reported non-bug.
- *#*
- *#* Revision 1.8  2006/02/10 12:37:45  bernie
- *#* Add support for ARM on IAR.
- *#*
- *#* Revision 1.7  2005/11/27 03:04:38  bernie
- *#* Add POSIX emulation for IRQ_* macros; Add Qt support.
- *#*
- *#* Revision 1.6  2005/07/19 07:26:49  bernie
- *#* Add missing #endif.
- *#*
- *#* Revision 1.5  2005/06/27 21:24:17  bernie
- *#* CPU_CSOURCE(): New macro.
- *#*
- *#* Revision 1.4  2005/06/14 06:15:10  bernie
- *#* Add X86_64 support.
- *#*
- *#* Revision 1.3  2005/04/12 04:06:17  bernie
- *#* Catch missing CPU earlier.
- *#*
- *#* Revision 1.2  2005/04/11 19:10:27  bernie
- *#* Include top-level headers from cfg/ subdir.
- *#*
- *#* Revision 1.1  2005/04/11 19:04:13  bernie
- *#* Move top-level headers to cfg/ subdir.
- *#*
- *#* Revision 1.30  2005/03/15 00:20:09  bernie
- *#* BREAKPOINT, IRQ_RUNNING(), IRQ_GETSTATE(): New DSP56K macros.
- *#*
- *#* Revision 1.29  2005/02/16 20:33:24  bernie
- *#* Preliminary PPC support.
- *#*
- *#* Revision 1.28  2004/12/31 17:39:41  bernie
- *#* Fix documentation.
- *#*
- *#* Revision 1.27  2004/12/31 17:02:47  bernie
- *#* IRQ_SAVE_DISABLE(), IRQ_RESTORE(): Add null stubs for x86.
- *#*
- *#* Revision 1.26  2004/12/13 12:08:12  bernie
- *#* DISABLE_IRQSAVE, ENABLE_IRQRESTORE, DISABLE_INTS, ENABLE_INTS: Remove obsolete macros.
- *#*
- *#* Revision 1.25  2004/12/08 08:31:02  bernie
- *#* CPU_HARVARD: Define to 1 for AVR and DSP56K.
- *#*/
 #ifndef DEVLIB_CPU_H
 #define DEVLIB_CPU_H
 
@@ -159,8 +119,8 @@
 	#define CPU_REG_BITS           32
 	#define CPU_REGS_CNT           16
 	#define CPU_SAVED_REGS_CNT     FIXME
-	#define CPU_STACK_GROWS_UPWARD 0  //FIXME
-	#define CPU_SP_ON_EMPTY_SLOT   0  //FIXME
+	#define CPU_STACK_GROWS_UPWARD 0
+	#define CPU_SP_ON_EMPTY_SLOT   0
 	#define CPU_BYTE_ORDER         (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
 	#define CPU_HARVARD            0
 
@@ -200,6 +160,7 @@
 	#else /* !__IAR_SYSTEMS_ICC__ */
 
 		#warning "IRQ_ macros need testing!"
+		#warning "Test now or die :-)"
 
 		#define NOP         asm volatile ("mov r0,r0" ::)
 
@@ -207,9 +168,9 @@
 		do { \
 			asm volatile ( \
 				"mrs r0, cpsr\n\t" \
-				"orr r0, r0, #0xb0\n\t" \
-				"msr cpsr, r0" \
-				:: \
+				"orr r0, r0, #0xc0\n\t" \
+				"msr cpsr_c, r0" \
+				::: "r0" \
 			); \
 		} while (0)
 
@@ -217,19 +178,18 @@
 		do { \
 			asm volatile ( \
 				"mrs r0, cpsr\n\t" \
-				"bic r0, r0, #0xb0\n\t" \
-				"msr cpsr, r0" \
-				:: \
+				"bic r0, r0, #0xc0\n\t" \
+				"msr cpsr_c, r0" \
+				::: "r0" \
 			); \
 		} while (0)
 
 		#define IRQ_SAVE_DISABLE(x) \
 		do { \
 			asm volatile ( \
-				"mrs r0, cpsr\n\t" \
-				"mov %0, r0\n\t" \
-				"orr r0, r0, #0xb0\n\t" \
-				"msr cpsr, r0" \
+				"mrs %0, cpsr\n\t" \
+				"orr r0, %0, #0xc0\n\t" \
+				"msr cpsr_c, r0" \
 				: "=r" (x) \
 				: /* no inputs */ \
 				: "r0" \
@@ -239,11 +199,9 @@
 		#define IRQ_RESTORE(x) \
 		do { \
 			asm volatile ( \
-				"mov r0, %0\n\t" \
-				"msr cpsr, r0" \
+				"msr cpsr_c, %0" \
 				: /* no outputs */ \
 				: "r" (x) \
-				: "r0" \
 			); \
 		} while (0)
 
@@ -251,16 +209,14 @@
 		({ \
 			uint32_t sreg; \
 			asm volatile ( \
-				"mrs r0, cpsr\n\t" \
-				"mov %0, r0" \
-				: "=r" (sreg)
-				: /* no inputs */
-				: "r0" \
+				"mrs %0, cpsr\n\t" \
+				: "=r" (sreg) \
+				: /* no inputs */ \
 			); \
-			(bool)(sreg & 0xb0); \
+			!((sreg & 0xc0) == 0xc0); \
 		})
 
-	#endif /* __IAR_SYSTEMS_ICC_ */
+	#endif /* !__IAR_SYSTEMS_ICC_ */
 
 #elif CPU_PPC
 	#define NOP                 asm volatile ("nop" ::)
@@ -372,7 +328,7 @@
 	#define CPU_BYTE_ORDER          CPU_LITTLE_ENDIAN
 	#define CPU_HARVARD             1
 
-	/*!
+	/**
 	 * Initialization value for registers in stack frame.
 	 * The register index is not directly corrispondent to CPU
 	 * register numbers. Index 0 is the SREG register: the initial
@@ -384,7 +340,7 @@
 	#error No CPU_... defined.
 #endif
 
-/*!
+/**
  * Execute \a CODE atomically with respect to interrupts.
  *
  * \see IRQ_SAVE_DISABLE IRQ_RESTORE
@@ -398,7 +354,7 @@
 	} while (0)
 
 
-//! Default for macro not defined in the right arch section
+/// Default for macro not defined in the right arch section
 #ifndef CPU_REG_INIT_VALUE
 	#define CPU_REG_INIT_VALUE(reg)     0
 #endif
@@ -478,7 +434,7 @@
 #endif
 
 
-/*!
+/**
  * \name Default type sizes.
  *
  * These defaults are reasonable for most 16/32bit machines.
@@ -572,7 +528,7 @@ STATIC_ASSERT(sizeof(int64_t) * CPU_BITS_PER_CHAR == 64);
 STATIC_ASSERT(sizeof(uint64_t) * CPU_BITS_PER_CHAR == 64);
 #endif
 
-/*!
+/**
  * \def CPU_IDLE
  *
  * \brief Invoked by the scheduler to stop the CPU when idle.