2002-03-29 Ralf Corsepius <corsepiu@faw.uni-ulm.de>

  	* rtems/score/idtr.h: New file, extracted from libcpu/cpu.h.
  	* rtems/score/interrupts.h: New file, extracted from libcpu/cpu.h.
	* rtems/score/registers.h: New file, moved from libcpu.
	* Makefile.am: Reflect changes above.
	* cpu.c: Don't include cpuModel.h,
	  #include <rtems.h>,
	  #include <rtems/score/i386types.h>,
	  #include <rtems/score/idtr.h>.
	* rtems/score/cpu.h: Don't include libcpu/cpu.h.
	  #include <rtems/score/interrupts.h>,
	  #include <rtems/score/registers.h>.

7 files changed, 346 insertions, 4 deletions

diff --git a/c/src/exec/score/cpu/i386/ChangeLog b/c/src/exec/score/cpu/i386/ChangeLog
index 96bf0ec9e9..980a97e8f3 100644
--- a/c/src/exec/score/cpu/i386/ChangeLog
+++ b/c/src/exec/score/cpu/i386/ChangeLog
@@ -1,3 +1,17 @@
+2002-03-29	Ralf Corsepius <corsepiu@faw.uni-ulm.de>
+
+  	* rtems/score/idtr.h: New file, extracted from libcpu/cpu.h.
+  	* rtems/score/interrupts.h: New file, extracted from libcpu/cpu.h.
+	* rtems/score/registers.h: New file, moved from libcpu.
+	* Makefile.am: Reflect changes above.
+	* cpu.c: Don't include cpuModel.h, 
+	  #include <rtems.h>, 
+	  #include <rtems/score/i386types.h>,
+	  #include <rtems/score/idtr.h>.
+	* rtems/score/cpu.h: Don't include libcpu/cpu.h.
+	  #include <rtems/score/interrupts.h>,
+	  #include <rtems/score/registers.h>.
+
 2001-04-03	Joel Sherrill <joel@OARcorp.com>
 
 	* Per PR94, all rtems/score/CPUtypes.h are named rtems/score/types.h.
diff --git a/c/src/exec/score/cpu/i386/Makefile.am b/c/src/exec/score/cpu/i386/Makefile.am
index f26300f0f9..20fca0d9f9 100644
--- a/c/src/exec/score/cpu/i386/Makefile.am
+++ b/c/src/exec/score/cpu/i386/Makefile.am
@@ -27,7 +27,11 @@ include_rtems_scoredir = $(includedir)/rtems/score
 include_rtems_score_HEADERS = \
     rtems/score/cpu.h \
     rtems/score/i386.h \
-    rtems/score/types.h
+    rtems/score/types.h \
+    rtems/score/interrupts.h \
+    rtems/score/registers.h \
+    rtems/score/idtr.h
+
 PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/score \
     $(include_rtems_score_HEADERS:%.h=$(PROJECT_INCLUDE)/%.h)
 
diff --git a/c/src/exec/score/cpu/i386/cpu.c b/c/src/exec/score/cpu/i386/cpu.c
index f59a5f6673..b55be879ab 100644
--- a/c/src/exec/score/cpu/i386/cpu.c
+++ b/c/src/exec/score/cpu/i386/cpu.c
@@ -12,12 +12,14 @@
  *  $Id$
  */
 
+#include <rtems.h>
 #include <rtems/system.h>
+#include <rtems/score/types.h>
 #include <rtems/score/isr.h>
+#include <rtems/score/idtr.h>
+
 #include <rtems/bspIo.h>
 #include <rtems/score/thread.h>
-#include <libcpu/cpuModel.h>
-
 
 /*  _CPU_Initialize
  *
diff --git a/c/src/exec/score/cpu/i386/rtems/score/cpu.h b/c/src/exec/score/cpu/i386/rtems/score/cpu.h
index b601bcf7ea..a6ea2c7628 100644
--- a/c/src/exec/score/cpu/i386/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/i386/rtems/score/cpu.h
@@ -21,10 +21,11 @@ extern "C" {
 #endif
 
 #include <rtems/score/i386.h>              /* pick up machine definitions */
-#include <libcpu/cpu.h>
 
 #ifndef ASM
 #include <rtems/score/types.h>
+#include <rtems/score/interrupts.h>	/* formerly in libcpu/cpu.h> */
+#include <rtems/score/registers.h>	/* formerly part of libcpu */
 #endif
 
 /* conditional compilation parameters */
diff --git a/c/src/exec/score/cpu/i386/rtems/score/idtr.h b/c/src/exec/score/cpu/i386/rtems/score/idtr.h
new file mode 100644
index 0000000000..7c4f95214f
--- /dev/null
+++ b/c/src/exec/score/cpu/i386/rtems/score/idtr.h
@@ -0,0 +1,62 @@
+/*
+ * This file contains definitions for data structure related
+ *          to Intel system programming. More information can be found
+ *          on Intel site and more precisely in the following book :
+ *
+ *		Pentium Processor familly
+ *		Developper's Manual
+ *
+ *		Volume 3 : Architecture and Programming Manual
+ *
+ * Formerly contained in and extracted from libcpu/i386/cpu.h.
+ *
+ * Copyright (C) 1998  Eric Valette (valette@crf.canon.fr)
+ *                     Canon Centre Recherche France.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ *
+ *  Applications must not include this file directly.
+ */
+
+#ifndef _rtems_score_idtr_h
+#define _rtems_score_idtr_h
+
+/*
+ * See page 14.9 Figure 14-2.
+ *
+ */
+typedef struct
+{
+  unsigned int low_offsets_bits:16;
+  unsigned int segment_selector:16;
+  unsigned int fixed_value_bits:8;
+  unsigned int gate_type:5;
+  unsigned int privilege:2;
+  unsigned int present:1;
+  unsigned int high_offsets_bits:16;
+} interrupt_gate_descriptor;
+
+/*
+ * C callable function enabling to create a interrupt_gate_descriptor
+ */
+extern void create_interrupt_gate_descriptor (interrupt_gate_descriptor*, rtems_raw_irq_hdl);
+
+/*
+ * C callable function enabling to get easily usable info from
+ * the actual value of IDT register.
+ */
+extern void i386_get_info_from_IDTR (interrupt_gate_descriptor** table,
+				unsigned* limit);
+
+/*
+ * C callable function enabling to change the value of IDT register. Must be called
+ * with interrupts masked at processor level!!!.
+ */
+extern void i386_set_IDTR (interrupt_gate_descriptor* table,
+		      unsigned limit);
+
+#endif
diff --git a/c/src/exec/score/cpu/i386/rtems/score/interrupts.h b/c/src/exec/score/cpu/i386/rtems/score/interrupts.h
new file mode 100644
index 0000000000..bcc1dfb85a
--- /dev/null
+++ b/c/src/exec/score/cpu/i386/rtems/score/interrupts.h
@@ -0,0 +1,75 @@
+/*
+ *  i386 interrupt macros.
+ *
+ *  Formerly contained in and extracted from libcpu/i386/cpu.h
+ *
+ *  COPYRIGHT (c) 1998 valette@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ * 
+ *  $Id$
+ *
+ *  Applications must not include this file directly.
+ */
+
+#ifndef _rtems_score_interrupts_h
+#define _rtems_score_interrupts_h
+
+#ifndef ASM
+
+struct 	__rtems_raw_irq_connect_data__;
+
+typedef void (*rtems_raw_irq_hdl)		(void);
+typedef void (*rtems_raw_irq_enable)		(const struct __rtems_raw_irq_connect_data__*);
+typedef void (*rtems_raw_irq_disable)		(const struct __rtems_raw_irq_connect_data__*);
+typedef int  (*rtems_raw_irq_is_enabled)	(const struct __rtems_raw_irq_connect_data__*);
+
+/*
+ *  Interrupt Level Macros
+ */
+
+#define i386_disable_interrupts( _level ) \
+  { \
+    asm volatile ( "pushf ; \
+                    cli ; \
+                    pop %0" \
+                   : "=rm" ((_level)) \
+    ); \
+  }
+
+#define i386_enable_interrupts( _level )  \
+  { \
+    asm volatile ( "push %0 ; \
+                    popf" \
+                    : : "rm" ((_level)) : "cc" \
+    ); \
+  }
+
+#define i386_flash_interrupts( _level ) \
+  { \
+    asm volatile ( "push %0 ; \
+                    popf ; \
+                    cli" \
+                    : : "rm" ((_level)) : "cc" \
+    ); \
+  }
+
+#define i386_get_interrupt_level( _level ) \
+  do { \
+    register unsigned32 _eflags; \
+    \
+    asm volatile ( "pushf ; \
+                    pop %0" \
+                    : "=rm" ((_eflags)) \
+    ); \
+    \
+    _level = (_eflags & EFLAGS_INTR_ENABLE) ? 0 : 1; \
+  } while (0)
+
+#define _CPU_ISR_Disable( _level ) i386_disable_interrupts( _level )
+#define _CPU_ISR_Enable( _level ) i386_enable_interrupts( _level )
+     
+#endif
+#endif
diff --git a/c/src/exec/score/cpu/i386/rtems/score/registers.h b/c/src/exec/score/cpu/i386/rtems/score/registers.h
new file mode 100644
index 0000000000..993b7fb834
--- /dev/null
+++ b/c/src/exec/score/cpu/i386/rtems/score/registers.h
@@ -0,0 +1,184 @@
+/* registers.h
+ *  
+ *  This file contains definition and constants related to Intel Cpu
+ *
+ *  COPYRIGHT (c) 1998 valette@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#ifndef _rtems_score_registers_h
+#define _rtems_score_registers_h
+
+/*
+ * definition related to EFLAGS
+ */
+#define EFLAGS_CARRY			0x1
+#define EFLAGS_PARITY			0x4
+
+#define EFLAGS_AUX_CARRY		0x10
+#define EFLAGS_ZERO			0x40
+#define EFLAGS_SIGN			0x80
+
+#define EFLAGS_TRAP			0x100
+#define EFLAGS_INTR_ENABLE		0x200
+#define EFLAGS_DIRECTION		0x400
+#define EFLAGS_OVERFLOW			0x800
+
+#define	EFLAGS_IOPL_MASK		0x3000
+#define EFLAGS_NESTED_TASK		0x8000
+
+#define EFLAGS_RESUME			0x10000
+#define EFLAGS_VIRTUAL_MODE		0x20000
+#define EFLAGS_ALIGN_CHECK		0x40000
+#define EFLAGS_VIRTUAL_INTR		0x80000
+
+#define EFLAGS_VIRTUAL_INTR_PEND	0x100000
+#define EFLAGS_ID			0x200000
+
+/*
+ * definitions related to CR0
+ */
+#define CR0_PROTECTION_ENABLE		0x1
+#define CR0_MONITOR_COPROC		0x2
+#define CR0_COPROC_SOFT_EMUL		0x4
+#define CR0_FLOATING_INSTR_EXCEPTION	0x8
+
+#define CR0_EXTENSION_TYPE		0x10
+#define CR0_NUMERIC_ERROR		0x20
+
+#define CR0_WRITE_PROTECT		0x10000
+#define CR0_ALIGMENT_MASK		0x40000
+
+#define CR0_NO_WRITE_THROUGH		0x20000000
+#define CR0_PAGE_LEVEL_CACHE_DISABLE	0x40000000
+#define CR0_PAGING			0x80000000
+
+/*
+ * definitions related to CR3
+ */
+
+#define CR3_PAGE_CACHE_DISABLE		0x10
+#define CR3_PAGE_WRITE_THROUGH		0x8
+
+
+#ifndef ASM
+
+/*
+ * definition of eflags registers has a bit field structure
+ */
+typedef struct {
+  /*
+   * fist byte : bits 0->7
+   */
+  unsigned int carry			: 1;
+  unsigned int 				: 1;
+  unsigned int parity			: 1;
+  unsigned int 				: 1;
+
+  unsigned int auxiliary_carry		: 1;
+  unsigned int 				: 1;
+  unsigned int zero			: 1;	/* result is zero */
+  unsigned int sign			: 1;	/* result is less than zero */
+  /*
+   * Second byte : bits 7->15
+   */
+  unsigned int trap			: 1;
+  unsigned int intr_enable		: 1;	/* set => intr on */
+  unsigned int direction		: 1;	/* set => autodecrement */
+  unsigned int overflow			: 1;
+
+  unsigned int IO_privilege		: 2;
+  unsigned int nested_task		: 1;
+  unsigned int 				: 1;
+  /*
+   * Third byte : bits 15->23
+   */
+  unsigned int resume			: 1;
+  unsigned int virtual_mode		: 1;
+  unsigned int aligment_check		: 1;
+  unsigned int virtual_intr		: 1;
+
+  unsigned int virtual_intr_pending	: 1;
+  unsigned int id 			: 1;
+  unsigned int				: 2;
+  
+  /*
+   * fourth byte : bits 24->31 : UNUSED
+   */
+  unsigned int 				: 8;
+}eflags_bits;
+
+typedef union {
+  eflags_bits	eflags;
+  unsigned int	i;
+}eflags;
+/*
+ * definition of eflags registers has a bit field structure
+ */
+typedef struct {
+  /*
+   * fist byte : bits 0->7
+   */
+  unsigned int protection_enable	: 1;
+  unsigned int monitor_coproc		: 1;
+  unsigned int coproc_soft_emul		: 1;
+  unsigned int floating_instr_except	: 1;
+  
+  unsigned int extension_type		: 1;
+  unsigned int numeric_error		: 1;
+  unsigned int 				: 2;
+  /*
+   * second byte 8->15 : UNUSED
+   */
+  unsigned int 				: 8;
+  /*
+   * third byte 16->23
+   */
+  unsigned int write_protect		: 1;
+  unsigned int 				: 1;
+  unsigned int aligment_mask		: 1;
+  unsigned int 				: 1;
+
+  unsigned int 				: 4;
+  /*
+   * fourth byte 24->31
+   */
+  unsigned int 				: 4;
+  
+  unsigned int 				: 1;
+  unsigned int no_write_through		: 1;
+  unsigned int page_level_cache_disable	: 1;
+  unsigned int paging	: 1;
+}cr0_bits;
+
+typedef union {
+  cr0_bits	cr0;
+  unsigned int	i;
+}cr0;
+
+/*
+ * definition of cr3 registers has a bit field structure
+ */
+typedef struct {
+
+  unsigned int 		        	: 3;
+  unsigned int page_write_transparent	: 1;
+  unsigned int page_cache_disable	: 1;
+  unsigned int 				: 7;
+  unsigned int page_directory_base	:20;
+}cr3_bits;
+
+typedef union {
+  cr3_bits	cr3;
+  unsigned int	i;
+}cr3;
+
+#endif
+
+#endif
+