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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
#ifndef _MC6821_H_
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#define _MC6821_H_
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/*
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* This file describes the memery mapping of the MC6821 PIA.
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* The unions describe overlayed registers. Which of them is used is
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* determined by bit 2 of the corresponding control register.
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* this files expects the PIA_REG_PADWIDTH to be defined the numeric
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* value of the register spacing.
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*
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* Data came from MFC-31-Developer Kit (from Ralph Seidel,
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* zodiac@darkness.gun.de) and Motorola Data Sheet (from
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* Richard Hirst, srh@gpt.co.uk)
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*
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* 6.11.95 copyright Joerg Dorchain (dorchain@mpi-sb.mpg.de)
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*
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*/
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#ifndef PIA_REG_PADWIDTH
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#define PIA_REG_PADWIDTH 255
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#endif
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struct pia {
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union {
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volatile u_char pra;
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volatile u_char ddra;
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} ua;
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u_char pad1[PIA_REG_PADWIDTH];
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volatile u_char cra;
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u_char pad2[PIA_REG_PADWIDTH];
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union {
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volatile u_char prb;
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volatile u_char ddrb;
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} ub;
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u_char pad3[PIA_REG_PADWIDTH];
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volatile u_char crb;
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u_char pad4[PIA_REG_PADWIDTH];
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};
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#define ppra ua.pra
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#define pddra ua.ddra
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#define pprb ub.prb
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#define pddrb ub.ddrb
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#define PIA_C1_ENABLE_IRQ (1<<0)
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#define PIA_C1_LOW_TO_HIGH (1<<1)
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#define PIA_DDR (1<<2)
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#define PIA_IRQ2 (1<<6)
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#define PIA_IRQ1 (1<<7)
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#endif
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