45 lines
931 B
C
45 lines
931 B
C
/*
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* Copyright 2002-2009, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_ARCH_X86_32_IFRAME_H
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#define _KERNEL_ARCH_X86_32_IFRAME_H
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struct iframe {
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uint32 type; // iframe type
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uint32 gs;
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uint32 fs;
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uint32 es;
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uint32 ds;
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uint32 di;
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uint32 si;
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uint32 bp;
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uint32 sp;
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uint32 bx;
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uint32 dx;
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uint32 cx;
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uint32 ax;
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uint32 orig_eax;
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uint32 orig_edx;
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uint32 vector;
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uint32 error_code;
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uint32 ip;
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uint32 cs;
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uint32 flags;
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// user_sp and user_ss are only present when the iframe is a userland
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// iframe (IFRAME_IS_USER()). A kernel iframe is shorter.
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uint32 user_sp;
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uint32 user_ss;
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};
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#define IFRAME_IS_USER(f) ((f)->cs == USER_CODE_SELECTOR \
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|| ((f)->flags & 0x20000) != 0)
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#endif /* _KERNEL_ARCH_X86_32_IFRAME_H */
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