mirror of
https://github.com/86Box/probing-tools.git
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84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box Probing Tools distribution.
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*
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* Definitions for common functions for Watcom C-based tools.
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*
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*
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*
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* Authors: RichardG, <richardg867@gmail.com>
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*
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* Copyright 2021 RichardG.
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*
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*/
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#ifndef WLIB_H
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# define WLIB_H
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#include <stdint.h>
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#pragma pack(push, 0)
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/* Convenience type for breaking a dword value down into words and bytes. */
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typedef union {
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uint8_t u8[4];
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uint16_t u16[2];
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uint32_t u32;
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} multi_t;
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#pragma pack(pop)
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/* Inline assembly functions. */
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void cli();
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#pragma aux cli = "cli";
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void sti();
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#pragma aux sti = "sti";
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uint8_t inb(uint16_t port);
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#pragma aux inb = "in al, dx" parm [dx] value [al];
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void outb(uint16_t port, uint8_t data);
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#pragma aux outb = "out dx, al" parm [dx] [al];
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uint16_t inw(uint16_t port);
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#pragma aux inw = "in ax, dx" parm [dx] value [ax];
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void outw(uint16_t port, uint16_t data);
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#pragma aux outw = "out dx, ax" parm [dx] [ax];
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#ifdef M_I386
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uint32_t inl(uint16_t port);
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# pragma aux inl = "in eax, dx" parm [dx] value [eax];
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void outl(uint16_t port, uint32_t data);
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# pragma aux outl = "out dx, eax" parm [dx] [eax];
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#else
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/* Some manual prefixing trickery to perform 32-bit I/O and access
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the extended part of EAX in real mode. Exchanging is necessary
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due to Watcom ignoring the order registers are specified in... */
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uint32_t inl(uint16_t port);
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# pragma aux inl = "db 0x66" "in ax, dx" /* in eax, dx */ \
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"mov cx, ax" \
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"db 0x66, 0xc1, 0xe8, 0x10" /* shr eax, 16 */ \
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"xchg ax, cx" \
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parm [dx] \
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value [ax cx];
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void outl(uint16_t port, uint32_t data);
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# pragma aux outl = "xchg ax, cx" \
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"db 0x66, 0xc1, 0xe0, 0x10" /* shl eax, 16 */ \
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"mov ax, cx" \
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"db 0x66" "out dx, ax" /* out dx, eax */ \
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parm [dx] [ax cx] \
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modify [ax cx];
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#endif
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/* Comparator functions. */
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extern int comp_ui8(const void *elem1, const void *elem2);
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/* PCI I/O functions. */
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extern uint32_t pci_cf8(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg);
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extern uint8_t pci_readb(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg);
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extern uint16_t pci_readw(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg);
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extern uint32_t pci_readl(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg);
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extern void pci_writeb(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg, uint8_t val);
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extern void pci_writew(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg, uint16_t val);
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extern void pci_writel(uint8_t bus, uint8_t dev, uint8_t func, uint8_t reg, uint32_t val);
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#endif
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