X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=cfg%2Fcpu.h;h=66ae5d731b891f7cbb3000ff1d04b0e14ba15e6e;hb=7920ccf2c9be523f680d88ef7d681d09af7da209;hp=6afa3fa0a349667242216ab7b5ecf5b1e1cda2f6;hpb=6bf26ad78b32851d9dd56fbf68356bcbdded590e;p=bertos.git

diff --git a/cfg/cpu.h b/cfg/cpu.h
index 6afa3fa0..66ae5d73 100755
--- a/cfg/cpu.h
+++ b/cfg/cpu.h
@@ -1,4 +1,4 @@
-/*!
+/**
  * \file
  * <!--
  * Copyright 2004, 2005 Develer S.r.l. (http://www.develer.com/)
@@ -17,6 +17,48 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.15  2006/07/19 12:56:25  bernie
+ *#* Convert to new Doxygen style.
+ *#*
+ *#* 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.
  *#*
@@ -41,20 +83,24 @@
 #ifndef DEVLIB_CPU_H
 #define DEVLIB_CPU_H
 
-#include "compiler.h" /* for uintXX_t */
+#include <cfg/compiler.h> /* for uintXX_t */
+#include <cfg/arch_config.h>  /* ARCH_EMUL */
 
 
-/*!
+/**
  * \name Macros for determining CPU endianness.
  * \{
  */
 #define CPU_BIG_ENDIAN    0x1234
-#define CPU_LITTLE_ENDIAN 0x3412
+#define CPU_LITTLE_ENDIAN 0x3412 /* Look twice, pal. This is not a bug. */
 /*\}*/
 
-/*! Macro to include cpu-specific versions of the headers. */
+/** Macro to include cpu-specific versions of the headers. */
 #define CPU_HEADER(module)          PP_STRINGIZE(PP_CAT3(module, _, CPU_ID).h)
 
+/** Macro to include cpu-specific versions of implementation files. */
+#define CPU_CSOURCE(module)         PP_STRINGIZE(PP_CAT3(module, _, CPU_ID).c)
+
 
 #if CPU_I196
 
@@ -75,23 +121,153 @@
 #elif CPU_X86
 
 	#define NOP                     asm volatile ("nop")
-	#define IRQ_DISABLE             /* nothing */
-	#define IRQ_ENABLE              /* nothing */
-	#define IRQ_SAVE_DISABLE(x)     /* nothing */
-	#define IRQ_RESTORE(x)          /* nothing */
 
-	typedef uint32_t cpuflags_t; // FIXME
-	typedef uint32_t cpustack_t;
+	/* Get IRQ_* definitions from the hosting environment. */
+	#include <cfg/os.h>
+	#if OS_EMBEDDED
+		#define IRQ_DISABLE             FIXME
+		#define IRQ_ENABLE              FIXME
+		#define IRQ_SAVE_DISABLE(x)     FIXME
+		#define IRQ_RESTORE(x)          FIXME
+		typedef uint32_t cpuflags_t; // FIXME
+	#endif /* OS_EMBEDDED */
+
 
-	#define CPU_REG_BITS            32
 	#define CPU_REGS_CNT            7
+	#define CPU_SAVED_REGS_CNT      7
 	#define CPU_STACK_GROWS_UPWARD  0
 	#define CPU_SP_ON_EMPTY_SLOT	0
 	#define CPU_BYTE_ORDER          CPU_LITTLE_ENDIAN
 	#define CPU_HARVARD		0
 
+	#if CPU_X86_64
+		typedef uint64_t cpustack_t;
+		#define CPU_REG_BITS    64
+
+		#ifdef __WIN64__
+			/* WIN64 is an IL32-P64 weirdo. */
+			#define SIZEOF_LONG  4
+		#endif
+	#else
+		typedef uint32_t cpustack_t;
+		#define CPU_REG_BITS    32
+	#endif
+
+#elif CPU_ARM
+
+	typedef uint32_t cpuflags_t;
+	typedef uint32_t cpustack_t;
+
+	/* Register counts include SREG too */
+	#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_BYTE_ORDER         (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
+	#define CPU_HARVARD            0
+
+	#ifdef __IAR_SYSTEMS_ICC__
+
+		#include <inarm.h>
+
+		#if __CPU_MODE__ == 1 /* Thumb */
+			/* Use stubs */
+			extern cpuflags_t get_CPSR(void);
+			extern void set_CPSR(cpuflags_t flags);
+		#else
+			#define get_CPSR __get_CPSR
+			#define set_CPSR __set_CPSR
+		#endif
+
+		#define NOP         __no_operation()
+		#define IRQ_DISABLE __disable_interrupt()
+		#define IRQ_ENABLE  __enable_interrupt()
+
+		#define IRQ_SAVE_DISABLE(x) \
+		do { \
+			(x) = get_CPSR(); \
+			__disable_interrupt(); \
+		} while (0)
+
+		#define IRQ_RESTORE(x) \
+		do { \
+			set_CPSR(x); \
+		} while (0)
+
+		#define IRQ_GETSTATE() \
+			((bool)(get_CPSR() & 0xb0))
+
+		#define BREAKPOINT  /* asm("bkpt 0") DOES NOT WORK */
+
+	#else /* !__IAR_SYSTEMS_ICC__ */
+
+		#warning "IRQ_ macros need testing!"
+
+		#define NOP         asm volatile ("mov r0,r0" ::)
+
+		#define IRQ_DISABLE \
+		do { \
+			asm volatile ( \
+				"mrs r0, cpsr\n\t" \
+				"orr r0, r0, #0xb0\n\t" \
+				"msr cpsr, r0" \
+				:: \
+			); \
+		} while (0)
+
+		#define IRQ_ENABLE \
+		do { \
+			asm volatile ( \
+				"mrs r0, cpsr\n\t" \
+				"bic r0, r0, #0xb0\n\t" \
+				"msr cpsr, 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" \
+				: "=r" (x) \
+				: /* no inputs */ \
+				: "r0" \
+			); \
+		} while (0)
+
+		#define IRQ_RESTORE(x) \
+		do { \
+			asm volatile ( \
+				"mov r0, %0\n\t" \
+				"msr cpsr, r0" \
+				: /* no outputs */ \
+				: "r" (x) \
+				: "r0" \
+			); \
+		} while (0)
+
+		#define IRQ_GETSTATE() \
+		({ \
+			uint32_t sreg; \
+			asm volatile ( \
+				"mrs r0, cpsr\n\t" \
+				"mov %0, r0" \
+				: "=r" (sreg)
+				: /* no inputs */
+				: "r0" \
+			); \
+			(bool)(sreg & 0xb0); \
+		})
+
+	#endif /* __IAR_SYSTEMS_ICC_ */
+
 #elif CPU_PPC
 	#define NOP                 asm volatile ("nop" ::)
+
 	#define IRQ_DISABLE         FIXME
 	#define IRQ_ENABLE          FIXME
 	#define IRQ_SAVE_DISABLE(x) FIXME
@@ -137,8 +313,6 @@
 	}
 	#define IRQ_GETSTATE() irq_getstate()
 
-
-
 	typedef uint16_t cpuflags_t;
 	typedef unsigned int cpustack_t;
 
@@ -201,7 +375,7 @@
 	#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
@@ -209,9 +383,11 @@
 	 */
 	#define CPU_REG_INIT_VALUE(reg) (reg == 0 ? 0x80 : 0)
 
+#else
+	#error No CPU_... defined.
 #endif
 
-/*!
+/**
  * Execute \a CODE atomically with respect to interrupts.
  *
  * \see IRQ_SAVE_DISABLE IRQ_RESTORE
@@ -225,7 +401,7 @@
 	} 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
@@ -301,11 +477,11 @@
 
 #else
 	#define CPU_PUSH_CALL_CONTEXT(sp, func) \
-		CPU_PUSH_WORD((sp), (func))
+		CPU_PUSH_WORD((sp), (cpustack_t)(func))
 #endif
 
 
-/*!
+/**
  * \name Default type sizes.
  *
  * These defaults are reasonable for most 16/32bit machines.
@@ -347,7 +523,13 @@
 #endif
 
 #ifndef SIZEOF_PTR
-#define SIZEOF_PTR   SIZEOF_INT
+#if CPU_REG_BITS < 32
+	#define SIZEOF_PTR   2
+#elif CPU_REG_BITS == 32
+	#define SIZEOF_PTR   4
+#else /* CPU_REG_BITS > 32 */
+	#define SIZEOF_PTR   8
+#endif
 #endif
 
 #ifndef CPU_BITS_PER_CHAR
@@ -381,9 +563,19 @@ STATIC_ASSERT(sizeof(char) == SIZEOF_CHAR);
 STATIC_ASSERT(sizeof(short) == SIZEOF_SHORT);
 STATIC_ASSERT(sizeof(long) == SIZEOF_LONG);
 STATIC_ASSERT(sizeof(int) == SIZEOF_INT);
+STATIC_ASSERT(sizeof(void *) == SIZEOF_PTR);
+STATIC_ASSERT(sizeof(int8_t) * CPU_BITS_PER_CHAR == 8);
+STATIC_ASSERT(sizeof(uint8_t) * CPU_BITS_PER_CHAR == 8);
+STATIC_ASSERT(sizeof(int16_t) * CPU_BITS_PER_CHAR == 16);
+STATIC_ASSERT(sizeof(uint16_t) * CPU_BITS_PER_CHAR == 16);
+STATIC_ASSERT(sizeof(int32_t) * CPU_BITS_PER_CHAR == 32);
+STATIC_ASSERT(sizeof(uint32_t) * CPU_BITS_PER_CHAR == 32);
+#ifdef __HAS_INT64_T__
+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.
@@ -396,15 +588,12 @@ STATIC_ASSERT(sizeof(int) == SIZEOF_INT);
 	#if defined(ARCH_EMUL) && (ARCH & ARCH_EMUL)
 		/* This emulator hook should yield the CPU to the host.  */
 		EXTERN_C_BEGIN
-		void SchedulerIdle(void);
+		void emul_idle(void);
 		EXTERN_C_END
-		#define CPU_IDLE SchedulerIdle()
+		#define CPU_IDLE emul_idle()
 	#else /* !ARCH_EMUL */
 		#define CPU_IDLE do { /* nothing */ } while (0)
 	#endif /* !ARCH_EMUL */
 #endif /* !CPU_IDLE */
 
-/* OBSOLETE */
-#define SCHEDULER_IDLE CPU_IDLE
-
 #endif /* DEVLIB_CPU_H */