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15173df4e9
* The new function vm86_do_int(struct vm86_state *state, uint8 vec) provides a facility to call BIOS interupt handlers. The function must only be called from a user thread context because the lower 1MB of the address space is used. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25610 a95241bf-73f2-0310-859d-f6bbb57e9c96
39 lines
736 B
C
39 lines
736 B
C
/*
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* Copyright 2008 Jan Klötzke
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* All rights reserved. Distributed under the terms of the MIT License.
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*/
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#ifndef _VM86_H
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#define _VM86_H
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#include <OS.h>
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#include <arch_cpu.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define VM86_MIN_RAM_SIZE 0x1000
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#define RETURN_TO_32_INT 255
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struct vm86_state {
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struct vm86_iframe regs;
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area_id bios_area;
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area_id ram_area;
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unsigned int if_flag : 1;
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};
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status_t x86_vm86_enter(struct vm86_iframe *frame);
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void x86_vm86_return(struct vm86_iframe *frame, status_t retval);
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status_t vm86_prepare(struct vm86_state *state, unsigned int ram_size);
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void vm86_cleanup(struct vm86_state *state);
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status_t vm86_do_int(struct vm86_state *state, uint8 vec);
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#ifdef __cplusplus
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}
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#endif
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#endif
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