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/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
#ifndef __dj_include_dpmi_h_
#define __dj_include_dpmi_h_
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __dj_ENFORCE_ANSI_FREESTANDING
#ifndef __STRICT_ANSI__
#ifndef _POSIX_SOURCE
extern unsigned short __dpmi_error;
typedef struct {
unsigned short offset16;
unsigned short segment;
} __dpmi_raddr;
typedef struct {
unsigned long offset32;
unsigned short selector;
} __dpmi_paddr;
typedef struct {
unsigned long handle; /* 0, 2 */
unsigned long size; /* or count */ /* 4, 6 */
unsigned long address; /* 8, 10 */
} __dpmi_meminfo;
typedef union {
struct {
unsigned long edi;
unsigned long esi;
unsigned long ebp;
unsigned long res;
unsigned long ebx;
unsigned long edx;
unsigned long ecx;
unsigned long eax;
} d;
struct {
unsigned short di, di_hi;
unsigned short si, si_hi;
unsigned short bp, bp_hi;
unsigned short res, res_hi;
unsigned short bx, bx_hi;
unsigned short dx, dx_hi;
unsigned short cx, cx_hi;
unsigned short ax, ax_hi;
unsigned short flags;
unsigned short es;
unsigned short ds;
unsigned short fs;
unsigned short gs;
unsigned short ip;
unsigned short cs;
unsigned short sp;
unsigned short ss;
} x;
struct {
unsigned char edi[4];
unsigned char esi[4];
unsigned char ebp[4];
unsigned char res[4];
unsigned char bl, bh, ebx_b2, ebx_b3;
unsigned char dl, dh, edx_b2, edx_b3;
unsigned char cl, ch, ecx_b2, ecx_b3;
unsigned char al, ah, eax_b2, eax_b3;
} h;
} __dpmi_regs;
typedef struct {
unsigned char major;
unsigned char minor;
unsigned short flags;
unsigned char cpu;
unsigned char master_pic;
unsigned char slave_pic;
} __dpmi_version_ret;
typedef struct {
unsigned long largest_available_free_block_in_bytes;
unsigned long maximum_unlocked_page_allocation_in_pages;
unsigned long maximum_locked_page_allocation_in_pages;
unsigned long linear_address_space_size_in_pages;
unsigned long total_number_of_unlocked_pages;
unsigned long total_number_of_free_pages;
unsigned long total_number_of_physical_pages;
unsigned long free_linear_address_space_in_pages;
unsigned long size_of_paging_file_partition_in_pages;
unsigned long reserved[3];
} __dpmi_free_mem_info;
typedef struct {
unsigned long total_allocated_bytes_of_physical_memory_host;
unsigned long total_allocated_bytes_of_virtual_memory_host;
unsigned long total_available_bytes_of_virtual_memory_host;
unsigned long total_allocated_bytes_of_virtual_memory_vcpu;
unsigned long total_available_bytes_of_virtual_memory_vcpu;
unsigned long total_allocated_bytes_of_virtual_memory_client;
unsigned long total_available_bytes_of_virtual_memory_client;
unsigned long total_locked_bytes_of_memory_client;
unsigned long max_locked_bytes_of_memory_client;
unsigned long highest_linear_address_available_to_client;
unsigned long size_in_bytes_of_largest_free_memory_block;
unsigned long size_of_minimum_allocation_unit_in_bytes;
unsigned long size_of_allocation_alignment_unit_in_bytes;
unsigned long reserved[19];
} __dpmi_memory_info;
typedef struct {
unsigned long data16[2];
unsigned long code16[2];
unsigned short ip;
unsigned short reserved;
unsigned long data32[2];
unsigned long code32[2];
unsigned long eip;
} __dpmi_callback_info;
typedef struct {
unsigned long size_requested;
unsigned long size;
unsigned long handle;
unsigned long address;
unsigned long name_offset;
unsigned short name_selector;
unsigned short reserved1;
unsigned long reserved2;
} __dpmi_shminfo;
/* Unless otherwise noted, all functions return -1 on error, setting __dpmi_error to the DPMI error code */
void __dpmi_yield(void); /* INT 0x2F AX=1680 */
int __dpmi_allocate_ldt_descriptors(int _count); /* DPMI 0.9 AX=0000 */
int __dpmi_free_ldt_descriptor(int _descriptor); /* DPMI 0.9 AX=0001 */
int __dpmi_segment_to_descriptor(int _segment); /* DPMI 0.9 AX=0002 */
int __dpmi_get_selector_increment_value(void); /* DPMI 0.9 AX=0003 */
int __dpmi_get_segment_base_address(int _selector, unsigned long *_addr); /* DPMI 0.9 AX=0006 */
int __dpmi_set_segment_base_address(int _selector, unsigned long _address); /* DPMI 0.9 AX=0007 */
unsigned long __dpmi_get_segment_limit(int _selector); /* LSL instruction */
int __dpmi_set_segment_limit(int _selector, unsigned long _limit); /* DPMI 0.9 AX=0008 */
int __dpmi_get_descriptor_access_rights(int _selector); /* LAR instruction */
int __dpmi_set_descriptor_access_rights(int _selector, int _rights); /* DPMI 0.9 AX=0009 */
int __dpmi_create_alias_descriptor(int _selector); /* DPMI 0.9 AX=000a */
int __dpmi_get_descriptor(int _selector, void *_buffer); /* DPMI 0.9 AX=000b */
int __dpmi_set_descriptor(int _selector, void *_buffer); /* DPMI 0.9 AX=000c */
int __dpmi_allocate_specific_ldt_descriptor(int _selector); /* DPMI 0.9 AX=000d */
int __dpmi_get_multiple_descriptors(int _count, void *_buffer); /* DPMI 1.0 AX=000e */
int __dpmi_set_multiple_descriptors(int _count, void *_buffer); /* DPMI 1.0 AX=000f */
int __dpmi_allocate_dos_memory(int _paragraphs, int *_ret_selector_or_max); /* DPMI 0.9 AX=0100 */
int __dpmi_free_dos_memory(int _selector); /* DPMI 0.9 AX=0101 */
int __dpmi_resize_dos_memory(int _selector, int _newpara, int *_ret_max); /* DPMI 0.9 AX=0102 */
int __dpmi_get_real_mode_interrupt_vector(int _vector, __dpmi_raddr *_address); /* DPMI 0.9 AX=0200 */
int __dpmi_set_real_mode_interrupt_vector(int _vector, __dpmi_raddr *_address); /* DPMI 0.9 AX=0201 */
int __dpmi_get_processor_exception_handler_vector(int _vector, __dpmi_paddr *_address); /* DPMI 0.9 AX=0202 */
int __dpmi_set_processor_exception_handler_vector(int _vector, __dpmi_paddr *_address); /* DPMI 0.9 AX=0203 */
int __dpmi_get_protected_mode_interrupt_vector(int _vector, __dpmi_paddr *_address); /* DPMI 0.9 AX=0204 */
int __dpmi_set_protected_mode_interrupt_vector(int _vector, __dpmi_paddr *_address); /* DPMI 0.9 AX=0205 */
int __dpmi_get_extended_exception_handler_vector_pm(int _vector, __dpmi_paddr *_address); /* DPMI 1.0 AX=0210 */
int __dpmi_get_extended_exception_handler_vector_rm(int _vector, __dpmi_paddr *_address); /* DPMI 1.0 AX=0211 */
int __dpmi_set_extended_exception_handler_vector_pm(int _vector, __dpmi_paddr *_address); /* DPMI 1.0 AX=0212 */
int __dpmi_set_extended_exception_handler_vector_rm(int _vector, __dpmi_paddr *_address); /* DPMI 1.0 AX=0213 */
int __dpmi_simulate_real_mode_interrupt(int _vector, __dpmi_regs *_regs); /* DPMI 0.9 AX=0300 */
int __dpmi_int(int _vector, __dpmi_regs *_regs); /* like above, but sets ss sp fl */ /* DPMI 0.9 AX=0300 */
extern short __dpmi_int_ss, __dpmi_int_sp, __dpmi_int_flags; /* default to zero */
int __dpmi_simulate_real_mode_procedure_retf(__dpmi_regs *_regs); /* DPMI 0.9 AX=0301 */
int __dpmi_simulate_real_mode_procedure_retf_stack(__dpmi_regs *_regs, int stack_bytes_to_copy, const void *stack_bytes); /* DPMI 0.9 AX=0301 */
int __dpmi_simulate_real_mode_procedure_iret(__dpmi_regs *_regs); /* DPMI 0.9 AX=0302 */
int __dpmi_allocate_real_mode_callback(void (*_handler)(void), __dpmi_regs *_regs, __dpmi_raddr *_ret); /* DPMI 0.9 AX=0303 */
int __dpmi_free_real_mode_callback(__dpmi_raddr *_addr); /* DPMI 0.9 AX=0304 */
int __dpmi_get_state_save_restore_addr(__dpmi_raddr *_rm, __dpmi_paddr *_pm); /* DPMI 0.9 AX=0305 */
int __dpmi_get_raw_mode_switch_addr(__dpmi_raddr *_rm, __dpmi_paddr *_pm); /* DPMI 0.9 AX=0306 */
int __dpmi_get_version(__dpmi_version_ret *_ret); /* DPMI 0.9 AX=0400 */
int __dpmi_get_capabilities(int *_flags, char *vendor_info); /* DPMI 1.0 AX=0401 */
int __dpmi_get_free_memory_information(__dpmi_free_mem_info *_info); /* DPMI 0.9 AX=0500 */
int __dpmi_allocate_memory(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0501 */
int __dpmi_free_memory(unsigned long _handle); /* DPMI 0.9 AX=0502 */
int __dpmi_resize_memory(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0503 */
int __dpmi_allocate_linear_memory(__dpmi_meminfo *_info, int _commit); /* DPMI 1.0 AX=0504 */
int __dpmi_resize_linear_memory(__dpmi_meminfo *_info, int _commit); /* DPMI 1.0 AX=0505 */
int __dpmi_get_page_attributes(__dpmi_meminfo *_info, short *_buffer); /* DPMI 1.0 AX=0506 */
int __dpmi_set_page_attributes(__dpmi_meminfo *_info, short *_buffer); /* DPMI 1.0 AX=0507 */
int __dpmi_map_device_in_memory_block(__dpmi_meminfo *_info, unsigned long _physaddr); /* DPMI 1.0 AX=0508 */
int __dpmi_map_conventional_memory_in_memory_block(__dpmi_meminfo *_info, unsigned long _physaddr); /* DPMI 1.0 AX=0509 */
int __dpmi_get_memory_block_size_and_base(__dpmi_meminfo *_info); /* DPMI 1.0 AX=050a */
int __dpmi_get_memory_information(__dpmi_memory_info *_buffer); /* DPMI 1.0 AX=050b */
int __dpmi_lock_linear_region(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0600 */
int __dpmi_unlock_linear_region(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0601 */
int __dpmi_mark_real_mode_region_as_pageable(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0602 */
int __dpmi_relock_real_mode_region(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0603 */
int __dpmi_get_page_size(unsigned long *_size); /* DPMI 0.9 AX=0604 */
int __dpmi_mark_page_as_demand_paging_candidate(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0702 */
int __dpmi_discard_page_contents(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0703 */
int __dpmi_physical_address_mapping(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0800 */
int __dpmi_free_physical_address_mapping(__dpmi_meminfo *_info); /* DPMI 0.9 AX=0801 */
/* These next four functions return the old state */
int __dpmi_get_and_disable_virtual_interrupt_state(void); /* DPMI 0.9 AX=0900 */
int __dpmi_get_and_enable_virtual_interrupt_state(void); /* DPMI 0.9 AX=0901 */
int __dpmi_get_and_set_virtual_interrupt_state(int _old_state); /* DPMI 0.9 AH=09 */
int __dpmi_get_virtual_interrupt_state(void); /* DPMI 0.9 AX=0902 */
int __dpmi_get_vendor_specific_api_entry_point(char *_id, __dpmi_paddr *_api); /* DPMI 0.9 AX=0a00 */
int __dpmi_set_debug_watchpoint(__dpmi_meminfo *_info, int _type); /* DPMI 0.9 AX=0b00 */
int __dpmi_clear_debug_watchpoint(unsigned long _handle); /* DPMI 0.9 AX=0b01 */
int __dpmi_get_state_of_debug_watchpoint(unsigned long _handle, int *_status); /* DPMI 0.9 AX=0b02 */
int __dpmi_reset_debug_watchpoint(unsigned long _handle); /* DPMI 0.9 AX=0b03 */
int __dpmi_install_resident_service_provider_callback(__dpmi_callback_info *_info); /* DPMI 1.0 AX=0c00 */
int __dpmi_terminate_and_stay_resident(int return_code, int paragraphs_to_keep); /* DPMI 1.0 AX=0c01 */
int __dpmi_allocate_shared_memory(__dpmi_shminfo *_info); /* DPMI 1.0 AX=0d00 */
int __dpmi_free_shared_memory(unsigned long _handle); /* DPMI 1.0 AX=0d01 */
int __dpmi_serialize_on_shared_memory(unsigned long _handle, int _flags); /* DPMI 1.0 AX=0d02 */
int __dpmi_free_serialization_on_shared_memory(unsigned long _handle, int _flags); /* DPMI 1.0 AX=0d03 */
int __dpmi_get_coprocessor_status(void); /* DPMI 1.0 AX=0e00 */
int __dpmi_set_coprocessor_emulation(int _flags); /* DPMI 1.0 AX=0e01 */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* Backwards compatibility stuff */
#define _go32_dpmi_registers __dpmi_regs
typedef struct {
unsigned long available_memory;
unsigned long available_pages;
unsigned long available_lockable_pages;
unsigned long linear_space;
unsigned long unlocked_pages;
unsigned long available_physical_pages;
unsigned long total_physical_pages;
unsigned long free_linear_space;
unsigned long max_pages_in_paging_file;
unsigned long reserved[3];
} _go32_dpmi_meminfo;
#define _go32_dpmi_get_free_memory_information(x) __dpmi_get_free_memory_information((__dpmi_free_mem_info *)(x))
#define _go32_dpmi_simulate_int __dpmi_simulate_real_mode_interrupt
#define _go32_dpmi_simulate_fcall __dpmi_simulate_real_mode_procedure_retf
#define _go32_dpmi_simulate_fcall_iret __dpmi_simulate_real_mode_procedure_iret
typedef struct {
unsigned long size;
unsigned long pm_offset;
unsigned short pm_selector;
unsigned short rm_offset;
unsigned short rm_segment;
} _go32_dpmi_seginfo;
/* returns zero if success, else dpmi error and info->size is max size */
int _go32_dpmi_allocate_dos_memory(_go32_dpmi_seginfo *info);
/* set size to bytes/16, call, use rm_segment. Do not
change anthing but size until the memory is freed.
If error, max size is returned in size as bytes/16. */
int _go32_dpmi_free_dos_memory(_go32_dpmi_seginfo *info);
/* set new size to bytes/16, call. If error, max size
is returned in size as bytes/16 */
int _go32_dpmi_resize_dos_memory(_go32_dpmi_seginfo *info);
/* uses pm_selector to free memory */
/* These both use the rm_segment:rm_offset fields only */
int _go32_dpmi_get_real_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
int _go32_dpmi_set_real_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
/* These do NOT wrap the function in pm_offset in an iret handler.
You must provide an assembler interface yourself, or alloc one below.
You may NOT longjmp out of an interrupt handler. */
int _go32_dpmi_get_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
/* puts vector in pm_selector:pm_offset. */
int _go32_dpmi_set_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
/* sets vector from pm_offset and pm_selector */
/********** HELPER FUNCTIONS **********/
int _go32_dpmi_chain_protected_mode_interrupt_vector(int vector, _go32_dpmi_seginfo *info);
/* sets up wrapper that calls function in pm_offset, chaining to old
handler when it returns */
/* These generate assember IRET-style wrappers for functions and set up stack */
int _go32_dpmi_allocate_iret_wrapper(_go32_dpmi_seginfo *info);
/* Put function ptr in pm_offset, call, returns wrapper entry in pm_offset. */
int _go32_dpmi_free_iret_wrapper(_go32_dpmi_seginfo *info);
/* assumes pm_offset points to wrapper, frees it */
/* RMCB functions, automatically restructure the real-mode stack for the
proper return type and set up correct PM stack. The callback
(info->pm_offset) is called as (*pmcb)(_go32_dpmi_registers *regs); */
int _go32_dpmi_allocate_real_mode_callback_retf(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs);
/* points callback at pm_offset, returns seg:ofs of callback addr
in rm_segment:rm_offset. Do not change any fields until freed.
Interface is added to simulate far return */
int _go32_dpmi_allocate_real_mode_callback_iret(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs);
/* same, but simulates iret */
int _go32_dpmi_free_real_mode_callback(_go32_dpmi_seginfo *info);
/* frees callback */
/* The following two variables may be used to change the default stack size
for interrupts and rmcb wrappers to a user defined size from the default
of 32Kbytes. Each RMCB and chain/iret wrapper gets it's own stack. */
extern unsigned long _go32_interrupt_stack_size;
extern unsigned long _go32_rmcb_stack_size;
/* Convenience functions, the return value is *bytes* */
unsigned long _go32_dpmi_remaining_physical_memory(void);
unsigned long _go32_dpmi_remaining_virtual_memory(void);
/* locks memory from a specified offset within the code/data selector */
int _go32_dpmi_lock_code( void *_lockaddr, unsigned long _locksize);
int _go32_dpmi_lock_data( void *_lockaddr, unsigned long _locksize);
int __djgpp_set_page_attributes(void *our_addr, unsigned long num_bytes,
unsigned short attributes);
int __djgpp_map_physical_memory(void *our_addr, unsigned long num_bytes,
unsigned long phys_addr);
#endif /* !_POSIX_SOURCE */
#endif /* !__STRICT_ANSI__ */
#endif /* !__dj_ENFORCE_ANSI_FREESTANDING */
#ifndef __dj_ENFORCE_FUNCTION_CALLS
#endif /* !__dj_ENFORCE_FUNCTION_CALLS */
#ifdef __cplusplus
}
#endif
#endif /* !__dj_include_dpmi_h_ */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.