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add dpmi.h and most of DPMI-1.0 functionality #61

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add dpmi.h and most of DPMI-1.0 functionality #61

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75 changes: 75 additions & 0 deletions v0100/include/dpmi.h
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Original file line number Diff line number Diff line change
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#ifndef __DPMI_H
#define __DPMI_H

#include <stdint.h>

typedef struct {
unsigned short offset16;
unsigned short segment;
} __dpmi_raddr;

typedef struct {
uint32_t offset32;
unsigned short selector;
} __dpmi_paddr;

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, uint32_t *_addr); /* DPMI 0.9 AX=0006 */
int dpmi_set_segment_base_address(int _selector, uint32_t _address); /* DPMI 0.9 AX=0007 */
uint32_t dpmi_get_segment_limit(int _selector); /* LSL instruction */
int dpmi_set_segment_limit(int _selector, uint32_t _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, uint16_t *_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_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(uint32_t size, uint32_t *addr, uint32_t *handle);
int dpmi_free_memory(uint32_t _handle); /* DPMI 0.9 AX=0502 */
int dpmi_resize_memory(uint32_t size, uint32_t handle, uint32_t *newaddr,
uint32_t *newhandle);

int dpmi_get_page_size(uint32_t *_size); /* DPMI 0.9 AX=0604 */

/* 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(void); /* 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 */

#endif
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