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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* Virtual VM86 Mode swith return handler */ |
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| 23 | |||
| 24 | .title "vm86-exc.S" |
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| 25 | |||
| 26 | #include <ll/i386/sel.h> |
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| 27 | #include <ll/i386/linkage.h> |
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| 28 | #include <ll/i386/defs.h> |
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| 29 | |||
| 30 | |||
| 31 | #ifdef __LINUX__ |
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| 32 | # define P2ALIGN(p2) .align (1<<(p2)) |
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| 33 | #else |
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| 34 | # define P2ALIGN(p2) .align p2 |
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| 35 | #endif |
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| 36 | #ifdef __LINUX__ |
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| 37 | #define FUNCSYM(x) .type x,@function |
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| 38 | #else |
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| 39 | #define FUNCSYM(x) /* nothing */ |
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| 40 | #endif |
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| 41 | |||
| 42 | #define TEXT_ALIGN 4 |
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| 43 | |||
| 44 | .data |
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| 45 | |||
| 46 | ASMFILE(VM86-Exc) |
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| 47 | |||
| 48 | .text |
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| 49 | .globl SYMBOL_NAME(vm86_exc) |
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| 50 | |||
| 51 | SYMBOL_NAME_LABEL(vm86_exc) |
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| 52 | /* |
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| 53 | movl $0xAAAA, %eax |
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| 54 | movl $0xBBBB, %ebx |
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| 55 | movl $0xCCCC, %ecx |
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| 56 | movl $0xDDDD, %edx |
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| 57 | */ |
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| 58 | pushal |
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| 59 | pushfl |
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| 60 | movw $(X_FLATDATA_SEL),%ax |
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| 61 | movw %ax,%es |
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| 62 | movw %ax,%ds |
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| 63 | /* |
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| 64 | movl $0xB8020,%edi |
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| 65 | movl $'*',%ds:(%edi) |
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| 66 | pushl $1 |
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| 67 | */ |
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| 68 | cld |
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| 69 | pushl %esp |
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| 70 | call SYMBOL_NAME(vm86_return) |
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| 71 | addl $4,%esp |
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| 72 | iret |
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| 73 |