51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
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* Copyright 2002-2005, The Haiku Team. All rights reserved.
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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_THREAD_STRUCT_H
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#define _KERNEL_ARCH_x86_THREAD_STRUCT_H
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#include <arch_cpu.h>
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struct farcall {
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uint32 *esp;
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uint32 *ss;
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};
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#define IFRAME_TRACE_DEPTH 4
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struct iframe_stack {
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struct iframe *frames[IFRAME_TRACE_DEPTH];
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int32 index;
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};
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// architecture specific thread info
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struct arch_thread {
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struct farcall current_stack;
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struct farcall interrupt_stack;
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// used to track interrupts on this thread
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struct iframe_stack iframes;
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// 512 byte floating point save point
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uint8 fpu_state[512];
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};
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struct arch_team {
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// gcc treats empty structures as zero-length in C, but as if they contain
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// a char in C++. So we have to put a dummy in to be able to use the struct
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// from both in a consistent way.
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char dummy;
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};
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struct arch_fork_arg {
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struct iframe iframe;
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};
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#endif /* _KERNEL_ARCH_x86_THREAD_STRUCT_H */
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