nuclear@21: #include "dpmi.h"
nuclear@21: 
nuclear@21: void dpmi_real_int(int inum, struct dpmi_real_regs *regs)
nuclear@21: {
nuclear@21: 	unsigned char int_num = (unsigned char)inum;
nuclear@21: 	__asm {
nuclear@21: 		mov eax, 0x300
nuclear@21: 		mov edi, regs
nuclear@21: 		mov bl, int_num
nuclear@21: 		mov bh, 0
nuclear@21: 		xor ecx, ecx
nuclear@21: 		int 0x31
nuclear@21: 	}
nuclear@21: }
nuclear@21: 
nuclear@21: void *dpmi_mmap(uint32_t phys_addr, unsigned int size)
nuclear@21: {
nuclear@21: 	uint16_t mem_high, mem_low;
nuclear@21: 	uint16_t phys_high = phys_addr >> 16;
nuclear@21: 	uint16_t phys_low = phys_addr & 0xffff;
nuclear@21: 	uint16_t size_high = size >> 16;
nuclear@21: 	uint16_t size_low = size & 0xffff;
nuclear@21: 	unsigned int err, res = 0;
nuclear@21: 
nuclear@21: 	__asm {
nuclear@21: 		mov eax, 0x800
nuclear@21: 		mov bx, phys_high
nuclear@21: 		mov cx, phys_low
nuclear@21: 		mov si, size_high
nuclear@21: 		mov di, size_low
nuclear@21: 		int 0x31
nuclear@21: 		add res, 1
nuclear@21: 		mov err, eax
nuclear@21: 		mov mem_high, bx
nuclear@21: 		mov mem_low, cx
nuclear@21: 	}
nuclear@21: 
nuclear@21: 	if(res == 2) {
nuclear@21: 		return 0;
nuclear@21: 	}
nuclear@21: 	return (void*)(((uint32_t)mem_high << 16) | ((uint32_t)mem_low));
nuclear@21: }
nuclear@21: 
nuclear@21: void dpmi_munmap(void *addr)
nuclear@21: {
nuclear@21: 	uint16_t mem_high = (uint32_t)addr >> 16;
nuclear@21: 	uint16_t mem_low = (uint16_t)addr;
nuclear@21: 
nuclear@21: 	__asm {
nuclear@21: 		mov eax, 0x801
nuclear@21: 		mov bx, mem_high
nuclear@21: 		mov cx, mem_low
nuclear@21: 		int 0x31
nuclear@21: 	}
nuclear@21: }