599f30f93d
* Restructured the vm support code to align with the changes done to other archs. * Not completely finished, but the kernel loads and panics. I had this sitting on the disk anyway. * Only support 040 for now, 030 will need to be added back. * This commit is dedicated to Jack Tramiel who passed away away last sunday: http://www.forbes.com/sites/davidthier/2012/04/09/computer-legend-and-gaming-pioneer-jack-tramiel-dies-at-age-83/
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/*
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* Copyright 2003-2011, Haiku Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Axel Dörfler <axeld@pinc-software.de>
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* Ingo Weinhold <bonefish@cs.tu-berlin.de>
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*/
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#ifndef _KERNEL_ARCH_M68K_THREAD_H
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#define _KERNEL_ARCH_M68K_THREAD_H
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#include <arch/cpu.h>
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#include <arch/thread.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void m68k_push_iframe(struct iframe_stack *stack, struct iframe *frame);
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void m68k_pop_iframe(struct iframe_stack *stack);
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struct iframe *m68k_get_user_iframe(void);
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uint32 m68k_next_page_directory(Thread *from, Thread *to);
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/* as we won't support SMP on m68k (yet?) we can use a global here */
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extern Thread *gCurrentThread;
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extern inline Thread *
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arch_thread_get_current_thread(void)
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{
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return gCurrentThread;
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}
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extern inline void
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arch_thread_set_current_thread(Thread *t)
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{
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gCurrentThread = t;
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}
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#if 0
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/* this would only work on 030... */
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extern inline Thread *
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arch_thread_get_current_thread(void)
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{
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uint64 v = 0;
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asm volatile("pmove %%srp,(%0)" : : "a"(&v));
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return (Thread *)(uint32)(v & 0xffffffff);
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}
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extern inline void
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arch_thread_set_current_thread(Thread *t)
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{
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uint64 v;
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asm volatile("pmove %%srp,(%0)\n" \
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"move %1,(4,%0)\n" \
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"pmove (%0),%%srp" : : "a"(&v), "d"(t));
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}
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_ARCH_M68K_THREAD_H */
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