diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2002-04-12 15:08:13 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2002-04-12 15:08:13 +0000 |
commit | a324355fb87d556edac0fee0138eb393767c5f98 (patch) | |
tree | 0eebba3793c3194f73a2895e04583b12496b0069 /cpukit/score/cpu/i386/rtems/score/idtr.h | |
parent | 2002-04-10 Ralf Corsepius <corsepiu@faw.uni-ulm.de> (diff) | |
download | rtems-a324355fb87d556edac0fee0138eb393767c5f98.tar.bz2 |
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>.
Diffstat (limited to 'cpukit/score/cpu/i386/rtems/score/idtr.h')
-rw-r--r-- | cpukit/score/cpu/i386/rtems/score/idtr.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/cpukit/score/cpu/i386/rtems/score/idtr.h b/cpukit/score/cpu/i386/rtems/score/idtr.h new file mode 100644 index 0000000000..7c4f95214f --- /dev/null +++ b/cpukit/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 |