/usr/include/allegro/platform/aintdos.h is in liballegro4-dev 2:4.4.2-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* /\ _ \ /\_ \ /\_ \
* \ \ \L\ \\//\ \ \//\ \ __ __ _ __ ___
* \ \ __ \ \ \ \ \ \ \ /'__`\ /'_ `\/\`'__\/ __`\
* \ \ \/\ \ \_\ \_ \_\ \_/\ __//\ \L\ \ \ \//\ \L\ \
* \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
* \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
* /\____/
* \_/__/
*
* Some definitions for internal use by the DOS library code.
*
* By Shawn Hargreaves.
*
* See readme.txt for copyright information.
*/
#ifndef AINTDOS_H
#define AINTDOS_H
#ifndef ALLEGRO_H
#error must include allegro.h first
#endif
#ifndef ALLEGRO_DOS
#error bad include
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* macros to enable and disable interrupts */
#if defined ALLEGRO_GCC
#define DISABLE() asm volatile ("cli")
#define ENABLE() asm volatile ("sti")
#elif defined ALLEGRO_WATCOM
void DISABLE(void);
void ENABLE(void);
#pragma aux DISABLE = "cli";
#pragma aux ENABLE = "sti";
#else
#define DISABLE() asm { cli }
#define ENABLE() asm { sti }
#endif
AL_INLINE(void, _enter_critical, (void),
{
/* check if windows is running */
if ((os_type == OSTYPE_WIN3) || (os_type == OSTYPE_WIN95) ||
(os_type == OSTYPE_WIN98) || (os_type == OSTYPE_WINME) ||
(os_type == OSTYPE_WINNT) || (os_type == OSTYPE_WIN2000)) {
__dpmi_regs r;
r.x.ax = 0x1681;
__dpmi_int(0x2F, &r);
}
DISABLE();
})
AL_INLINE(void, _exit_critical, (void),
{
/* check if windows is running */
if ((os_type == OSTYPE_WIN3) || (os_type == OSTYPE_WIN95) ||
(os_type == OSTYPE_WIN98) || (os_type == OSTYPE_WINME) ||
(os_type == OSTYPE_WINNT) || (os_type == OSTYPE_WIN2000)) {
__dpmi_regs r;
r.x.ax = 0x1682;
__dpmi_int(0x2F, &r);
}
ENABLE();
})
/* interrupt hander stuff */
AL_FUNC(void, _dos_irq_init, (void));
AL_FUNC(void, _dos_irq_exit, (void));
#define _map_irq(irq) (((irq)>7) ? ((irq)+104) : ((irq)+8))
AL_FUNC(int, _install_irq, (int num, AL_METHOD(int, handler, (void))));
AL_FUNC(void, _remove_irq, (int num));
AL_FUNC(void, _restore_irq, (int irq));
AL_FUNC(void, _enable_irq, (int irq));
AL_FUNC(void, _disable_irq, (int irq));
#define _eoi(irq) { outportb(0x20, 0x20); if ((irq)>7) outportb(0xA0, 0x20); }
typedef struct _IRQ_HANDLER
{
AL_METHOD(int, handler, (void)); /* our C handler */
int number; /* irq number */
#ifdef ALLEGRO_DJGPP
__dpmi_paddr old_vector; /* original protected mode vector */
#else
void (__interrupt __far *old_vector)();
#endif
} _IRQ_HANDLER;
/* sound lib stuff */
AL_VAR(int, _fm_port);
AL_VAR(int, _mpu_port);
AL_VAR(int, _mpu_irq);
/* DPMI memory mapping routines */
AL_FUNC(int, _create_physical_mapping, (unsigned long *linear, int *segment, unsigned long physaddr, int size));
AL_FUNC(void, _remove_physical_mapping, (unsigned long *linear, int *segment));
AL_FUNC(int, _create_linear_mapping, (unsigned long *linear, unsigned long physaddr, int size));
AL_FUNC(void, _remove_linear_mapping, (unsigned long *linear));
AL_FUNC(int, _create_selector, (int *segment, unsigned long linear, int size));
AL_FUNC(void, _remove_selector, (int *segment));
AL_FUNC(void, _unlock_dpmi_data, (void *addr, int size));
/* bank switching routines (these use a non-C calling convention on i386!) */
AL_FUNC(void, _vesa_window_1, (void));
AL_FUNC(void, _vesa_window_1_end, (void));
AL_FUNC(void, _vesa_window_2, (void));
AL_FUNC(void, _vesa_window_2_end, (void));
AL_FUNC(void, _vesa_pm_window_1, (void));
AL_FUNC(void, _vesa_pm_window_1_end, (void));
AL_FUNC(void, _vesa_pm_window_2, (void));
AL_FUNC(void, _vesa_pm_window_2_end, (void));
AL_FUNC(void, _vesa_pm_es_window_1, (void));
AL_FUNC(void, _vesa_pm_es_window_1_end, (void));
AL_FUNC(void, _vesa_pm_es_window_2, (void));
AL_FUNC(void, _vesa_pm_es_window_2_end, (void));
/* stuff for the VESA driver */
AL_VAR(__dpmi_regs, _dpmi_reg);
AL_VAR(int, _window_2_offset);
AL_VAR(int, _mmio_segment);
AL_FUNCPTR(void, _pm_vesa_switcher, (void));
AL_FUNCPTR(void, _pm_vesa_scroller, (void));
AL_FUNCPTR(void, _pm_vesa_palette, (void));
AL_FUNC(int, _sb_read_dsp_version, (void));
AL_FUNC(int, _sb_reset_dsp, (int data));
AL_FUNC(void, _sb_voice, (int state));
AL_FUNC(int, _sb_set_mixer, (int digi_volume, int midi_volume));
AL_FUNC(void, _mpu_poll, (void));
AL_FUNC(int, _dma_allocate_mem, (int bytes, int *sel, unsigned long *phys));
AL_FUNC(void, _dma_start, (int channel, unsigned long addr, int size, int auto_init, int input));
AL_FUNC(void, _dma_stop, (int channel));
AL_FUNC(unsigned long, _dma_todo, (int channel));
AL_FUNC(void, _dma_lock_mem, (void));
#ifdef __cplusplus
}
#endif
/* VGA register access helpers */
#include "allegro/internal/aintvga.h"
#endif /* ifndef AINTDOS_H */
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