/* This is file dpmi.h */
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/* This is file dpmi.h */
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/*
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/*
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** Copyright (C) 1993 DJ Delorie
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** Copyright (C) 1993 DJ Delorie
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**
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**
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** This file is distributed under the terms listed in the document
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** This file is distributed under the terms listed in the document
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** "copying.dj".
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** "copying.dj".
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** A copy of "copying.dj" should accompany this file; if not, a copy
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** A copy of "copying.dj" should accompany this file; if not, a copy
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** should be available from where this file was obtained. This file
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** should be available from where this file was obtained. This file
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** may not be distributed without a verbatim copy of "copying.dj".
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** may not be distributed without a verbatim copy of "copying.dj".
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**
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**
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** This file is distributed WITHOUT ANY WARRANTY; without even the implied
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** This file is distributed WITHOUT ANY WARRANTY; without even the implied
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** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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*/
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#ifndef _DPMI_H_
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#ifndef _DPMI_H_
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#define _DPMI_H_
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#define _DPMI_H_
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#include <sys/types.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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#ifdef __cplusplus
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extern "C" {
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extern "C" {
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#endif
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#endif
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typedef union {
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typedef union {
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struct {
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struct {
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u_long edi;
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u_long edi;
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u_long esi;
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u_long esi;
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u_long ebp;
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u_long ebp;
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u_long res;
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u_long res;
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u_long ebx;
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u_long ebx;
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u_long edx;
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u_long edx;
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u_long ecx;
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u_long ecx;
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u_long eax;
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u_long eax;
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} d;
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} d;
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struct {
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struct {
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u_short di, di_hi;
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u_short di, di_hi;
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u_short si, si_hi;
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u_short si, si_hi;
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u_short bp, bp_hi;
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u_short bp, bp_hi;
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u_short res, res_hi;
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u_short res, res_hi;
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u_short bx, bx_hi;
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u_short bx, bx_hi;
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u_short dx, dx_hi;
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u_short dx, dx_hi;
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u_short cx, cx_hi;
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u_short cx, cx_hi;
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u_short ax, ax_hi;
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u_short ax, ax_hi;
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u_short flags;
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u_short flags;
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u_short es;
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u_short es;
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u_short ds;
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u_short ds;
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u_short fs;
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u_short fs;
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u_short gs;
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u_short gs;
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u_short ip;
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u_short ip;
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u_short cs;
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u_short cs;
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u_short sp;
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u_short sp;
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u_short ss;
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u_short ss;
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} x;
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} x;
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struct {
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struct {
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u_char edi[4];
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u_char edi[4];
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u_char esi[4];
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u_char esi[4];
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u_char ebp[4];
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u_char ebp[4];
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u_char res[4];
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u_char res[4];
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u_char bl, bh, ebx_b2, ebx_b3;
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u_char bl, bh, ebx_b2, ebx_b3;
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u_char dl, dh, edx_b2, edx_b3;
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u_char dl, dh, edx_b2, edx_b3;
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u_char cl, ch, ecx_b2, ecx_b3;
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u_char cl, ch, ecx_b2, ecx_b3;
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u_char al, ah, eax_b2, eax_b3;
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u_char al, ah, eax_b2, eax_b3;
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} h;
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} h;
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} _go32_dpmi_registers;
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} _go32_dpmi_registers;
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typedef struct {
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typedef struct {
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u_long size;
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u_long size;
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u_long pm_offset;
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u_long pm_offset;
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u_short pm_selector;
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u_short pm_selector;
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u_short rm_offset;
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u_short rm_offset;
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u_short rm_segment;
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u_short rm_segment;
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} _go32_dpmi_seginfo;
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} _go32_dpmi_seginfo;
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typedef struct {
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typedef struct {
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u_long available_memory;
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u_long available_memory;
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u_long available_pages;
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u_long available_pages;
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u_long available_lockable_pages;
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u_long available_lockable_pages;
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u_long linear_space;
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u_long linear_space;
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u_long unlocked_pages;
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u_long unlocked_pages;
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u_long available_physical_pages;
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u_long available_physical_pages;
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u_long total_physical_pages;
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u_long total_physical_pages;
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u_long free_linear_space;
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u_long free_linear_space;
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u_long max_pages_in_paging_file;
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u_long max_pages_in_paging_file;
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u_long reserved[3];
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u_long reserved[3];
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} _go32_dpmi_meminfo;
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} _go32_dpmi_meminfo;
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/* returns zero if success, else dpmi error and info->size is max size */
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/* returns zero if success, else dpmi error and info->size is max size */
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int _go32_dpmi_allocate_dos_memory(_go32_dpmi_seginfo *info);
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int _go32_dpmi_allocate_dos_memory(_go32_dpmi_seginfo *info);
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/* set size to bytes/16, call, use rm_segment. Do not
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/* set size to bytes/16, call, use rm_segment. Do not
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change anthing but size until the memory is freed.
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change anthing but size until the memory is freed.
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If error, max size is returned in size as bytes/16. */
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If error, max size is returned in size as bytes/16. */
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int _go32_dpmi_free_dos_memory(_go32_dpmi_seginfo *info);
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int _go32_dpmi_free_dos_memory(_go32_dpmi_seginfo *info);
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/* set new size to bytes/16, call. If error, max size
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/* set new size to bytes/16, call. If error, max size
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is returned in size as bytes/16 */
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is returned in size as bytes/16 */
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int _go32_dpmi_resize_dos_memory(_go32_dpmi_seginfo *info);
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int _go32_dpmi_resize_dos_memory(_go32_dpmi_seginfo *info);
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/* uses pm_selector to free memory */
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/* uses pm_selector to free memory */
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/* These both use the rm_segment:rm_offset fields only */
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/* These both use the rm_segment:rm_offset fields only */
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int _go32_dpmi_get_real_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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int _go32_dpmi_get_real_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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int _go32_dpmi_set_real_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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int _go32_dpmi_set_real_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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/* These do NOT wrap the function in pm_offset in an iret handler.
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/* These do NOT wrap the function in pm_offset in an iret handler.
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You must provide an assembler interface yourself, or alloc one below.
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You must provide an assembler interface yourself, or alloc one below.
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You may NOT longjmp out of an interrupt handler. */
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You may NOT longjmp out of an interrupt handler. */
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int _go32_dpmi_get_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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int _go32_dpmi_get_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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/* puts vector in pm_selector:pm_offset. */
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/* puts vector in pm_selector:pm_offset. */
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int _go32_dpmi_set_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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int _go32_dpmi_set_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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/* sets vector from pm_offset and pm_selector */
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/* sets vector from pm_offset and pm_selector */
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int _go32_dpmi_chain_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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int _go32_dpmi_chain_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
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/* sets up wrapper that calls function in pm_offset, chaining to old
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/* sets up wrapper that calls function in pm_offset, chaining to old
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handler when it returns */
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handler when it returns */
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/* These can be used to generate assember IRET-style wrappers for functions */
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/* These can be used to generate assember IRET-style wrappers for functions */
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int _go32_dpmi_allocate_iret_wrapper(_go32_dpmi_seginfo *info);
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int _go32_dpmi_allocate_iret_wrapper(_go32_dpmi_seginfo *info);
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/* Put function ptr in pm_offset, call, returns wrapper entry in pm_offset. */
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/* Put function ptr in pm_offset, call, returns wrapper entry in pm_offset. */
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int _go32_dpmi_free_iret_wrapper(_go32_dpmi_seginfo *info);
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int _go32_dpmi_free_iret_wrapper(_go32_dpmi_seginfo *info);
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/* assumes pm_offset points to wrapper, frees it */
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/* assumes pm_offset points to wrapper, frees it */
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/* simulate real mode calls. CS:IP from regs for non-interrupt */
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/* simulate real mode calls. CS:IP from regs for non-interrupt */
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int _go32_dpmi_simulate_int(int vector, _go32_dpmi_registers *regs);
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int _go32_dpmi_simulate_int(int vector, _go32_dpmi_registers *regs);
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int _go32_dpmi_simulate_fcall(_go32_dpmi_registers *regs);
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int _go32_dpmi_simulate_fcall(_go32_dpmi_registers *regs);
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int _go32_dpmi_simulate_fcall_iret(_go32_dpmi_registers *regs);
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int _go32_dpmi_simulate_fcall_iret(_go32_dpmi_registers *regs);
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/* These automatically handle the tasks of restructuring the
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/* These automatically handle the tasks of restructuring the
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real-mode stack for the proper return type. The callback
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real-mode stack for the proper return type. The callback
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(info->pm_offset) is called as (*pmcb)(_go32_dpmi_registers *regs); */
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(info->pm_offset) is called as (*pmcb)(_go32_dpmi_registers *regs); */
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int _go32_dpmi_allocate_real_mode_callback_retf(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs);
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int _go32_dpmi_allocate_real_mode_callback_retf(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs);
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/* points callback at pm_offset, returns seg:ofs of callback addr
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/* points callback at pm_offset, returns seg:ofs of callback addr
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in rm_segment:rm_offset. Do not change any fields until freed.
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in rm_segment:rm_offset. Do not change any fields until freed.
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Interface is added to simulate far return */
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Interface is added to simulate far return */
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int _go32_dpmi_allocate_real_mode_callback_iret(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs);
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int _go32_dpmi_allocate_real_mode_callback_iret(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs);
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/* same, but simulates iret */
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/* same, but simulates iret */
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int _go32_dpmi_free_real_mode_callback(_go32_dpmi_seginfo *info);
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int _go32_dpmi_free_real_mode_callback(_go32_dpmi_seginfo *info);
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/* frees callback */
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/* frees callback */
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/* Only available_memory is guaranteed to be valid. Try
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/* Only available_memory is guaranteed to be valid. Try
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available_physical_pages for phys mem left */
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available_physical_pages for phys mem left */
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int _go32_dpmi_get_free_memory_information(_go32_dpmi_meminfo *info);
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int _go32_dpmi_get_free_memory_information(_go32_dpmi_meminfo *info);
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/* Convenience functions. These use the above memory info call.
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/* Convenience functions. These use the above memory info call.
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The return value is *bytes* */
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The return value is *bytes* */
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u_long _go32_dpmi_remaining_physical_memory(void);
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u_long _go32_dpmi_remaining_physical_memory(void);
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u_long _go32_dpmi_remaining_virtual_memory(void);
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u_long _go32_dpmi_remaining_virtual_memory(void);
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#ifdef __cplusplus
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#ifdef __cplusplus
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}
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}
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#endif
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#endif
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#endif
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#endif
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