| 1 | /* int86.h - 8086 interrupt types Author: Kees J. Bot
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| 2 | * 3 May 2000
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| 3 | */
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| 4 |
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| 5 | /* Registers used in an PC real mode call for BIOS or DOS services. A
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| 6 | * driver is called through the vector if the interrupt number is zero.
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| 7 | */
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| 8 | union reg86 {
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| 9 | struct l {
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| 10 | u32_t ef; /* 32 bit flags (output only) */
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| 11 | u32_t vec; /* Driver vector (input only) */
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| 12 | u32_t _ds_es[1];
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| 13 | u32_t eax; /* 32 bit general registers */
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| 14 | u32_t ebx;
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| 15 | u32_t ecx;
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| 16 | u32_t edx;
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| 17 | u32_t esi;
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| 18 | u32_t edi;
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| 19 | u32_t ebp;
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| 20 | } l;
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| 21 | struct w {
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| 22 | u16_t f, _ef[1]; /* 16 bit flags (output only) */
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| 23 | u16_t off, seg; /* Driver vector (input only) */
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| 24 | u16_t ds, es; /* DS and ES real mode segment regs */
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| 25 | u16_t ax, _eax[1]; /* 16 bit general registers */
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| 26 | u16_t bx, _ebx[1];
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| 27 | u16_t cx, _ecx[1];
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| 28 | u16_t dx, _edx[1];
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| 29 | u16_t si, _esi[1];
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| 30 | u16_t di, _edi[1];
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| 31 | u16_t bp, _ebp[1];
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| 32 | } w;
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| 33 | struct b {
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| 34 | u8_t intno, _intno[3]; /* Interrupt number (input only) */
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| 35 | u8_t _vec[4];
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| 36 | u8_t _ds_es[4];
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| 37 | u8_t al, ah, _eax[2]; /* 8 bit general registers */
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| 38 | u8_t bl, bh, _ebx[2];
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| 39 | u8_t cl, ch, _ecx[2];
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| 40 | u8_t dl, dh, _edx[2];
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| 41 | u8_t _esi[4];
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| 42 | u8_t _edi[4];
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| 43 | u8_t _ebp[4];
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| 44 | } b;
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| 45 | };
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| 46 |
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| 47 | struct reg86u { union reg86 u; }; /* Better for forward declarations */
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| 48 |
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| 49 | /* Parameters passed on ioctls to the memory task. */
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| 50 |
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| 51 | struct mio_int86 { /* MIOCINT86 */
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| 52 | union reg86 reg86; /* x86 registers as above */
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| 53 | u16_t off, seg; /* Address of kernel buffer */
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| 54 | void *buf; /* User data buffer */
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| 55 | size_t len; /* Size of user buffer */
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| 56 | };
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| 57 |
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| 58 | struct mio_ldt86 { /* MIOCGLDT86, MIOCSLDT86 */
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| 59 | size_t idx; /* Index in process' LDT */
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| 60 | u16_t entry[4]; /* One LDT entry to get or set. */
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| 61 | };
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