Phoenix: kernel/sys/arch/x86_64/md

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00001 /*
00002  * /phoenix/kernel/sys/arch/x86_64/md_stack.h
00003  *
00004  * This file is a part of Phoenix operating system.
00005  * Copyright (c) 2011-2012, Artyom Lebedev <artyom.lebedev@gmail.com>
00006  * All rights reserved.
00007  * See COPYING file for copyright details.
00008  */
00009 
00014 #ifndef MD_STACK_H_
00015 #define MD_STACK_H_
00016 
00017 namespace {
00018 
00024 typedef void (*StackEntryFunc)(void *arg) __NORETURN;
00025 
00038 inline void SwitchStack(vaddr_t stackAddr, StackEntryFunc entryFunc, void *arg)
00039     __NORETURN;
00040 inline void
00041 SwitchStack(vaddr_t stackAddr, StackEntryFunc entryFunc, void *arg = 0)
00042 {
00043     ASM (
00044         "movq %[stackAddr], %%rsp\n"
00045         "jmp *%[entryFunc]\n"
00046         :
00047         : [arg]"D"(arg), [entryFunc]"a"(entryFunc), [stackAddr]"S"(stackAddr)
00048         : "memory"
00049         );
00050     NOT_REACHED();
00051 }
00052 
00053 } /* anonymous namespace */
00054 
00055 #endif /* MD_STACK_H_ */