annotate src/dpmi.h @ 3:5b0ef094b8fd
backported changes from more recent VBE projects
| author |
John Tsiombikas <nuclear@member.fsf.org> |
| date |
Mon, 07 Jan 2019 12:07:53 +0200 |
| parents |
4b33fa83e381 |
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1 #ifndef DPMI_H_
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2 #define DPMI_H_
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3
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4 #ifdef __DJGPP__
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5 #include <dpmi.h>
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6 #endif
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7
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8 #include "inttypes.h"
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9
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10 struct dpmi_real_regs {
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11 uint32_t edi, esi, ebp;
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12 uint32_t reserved;
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13 uint32_t ebx, edx, ecx, eax;
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14 uint16_t flags;
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15 uint16_t es, ds, fs, gs;
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16 uint16_t ip, cs, sp, ss;
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17 };
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18
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19 uint16_t dpmi_alloc(unsigned int par, uint16_t *sel);
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20 void dpmi_free(uint16_t sel);
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21
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22 #ifdef __WATCOMC__
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23 #pragma aux dpmi_alloc = \
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24 "mov eax, 0x100" \
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25 "int 0x31" \
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26 "mov [edi], dx" \
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27 value[ax] parm[ebx][edi];
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28
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29 #pragma aux dpmi_free = \
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30 "mov eax, 0x101" \
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31 "int 0x31" \
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32 parm[dx];
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33
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34 void dpmi_real_int(int inum, struct dpmi_real_regs *regs);
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35 #endif /* __WATCOMC__ */
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36
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37 #ifdef __DJGPP__
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38 #define dpmi_real_int(inum, regs) __dpmi_int((inum), (__dpmi_regs*)(regs))
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39 #endif
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40
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41 void *dpmi_mmap(uint32_t phys_addr, unsigned int size);
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42 void dpmi_munmap(void *addr);
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43
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44 #endif /* DPMI_H_ */
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