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author | Al Viro <viro@ftp.linux.org.uk> | 2011-08-18 20:06:39 +0100 |
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committer | Richard Weinberger <richard@nod.at> | 2011-11-02 14:15:05 +0100 |
commit | 5c48b108ecbf6505d929e64d50dace13ac2bdf34 (patch) | |
tree | 016904f84fbe05aa301c5cdfe712d90f6bb828fe /arch/x86/um/asm/processor_64.h | |
parent | 7bbe7204e93734fe79d8aac3e08a7cb4624b5004 (diff) | |
download | op-kernel-dev-5c48b108ecbf6505d929e64d50dace13ac2bdf34.zip op-kernel-dev-5c48b108ecbf6505d929e64d50dace13ac2bdf34.tar.gz |
um: take arch/um/sys-x86 to arch/x86/um
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/x86/um/asm/processor_64.h')
-rw-r--r-- | arch/x86/um/asm/processor_64.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/um/asm/processor_64.h b/arch/x86/um/asm/processor_64.h new file mode 100644 index 0000000..6db812b --- /dev/null +++ b/arch/x86/um/asm/processor_64.h @@ -0,0 +1,51 @@ +/* + * Copyright 2003 PathScale, Inc. + * + * Licensed under the GPL + */ + +#ifndef __UM_PROCESSOR_X86_64_H +#define __UM_PROCESSOR_X86_64_H + +struct arch_thread { + unsigned long debugregs[8]; + int debugregs_seq; + unsigned long fs; + struct faultinfo faultinfo; +}; + +/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */ +static inline void rep_nop(void) +{ + __asm__ __volatile__("rep;nop": : :"memory"); +} + +#define cpu_relax() rep_nop() + +#define INIT_ARCH_THREAD { .debugregs = { [ 0 ... 7 ] = 0 }, \ + .debugregs_seq = 0, \ + .fs = 0, \ + .faultinfo = { 0, 0, 0 } } + +static inline void arch_flush_thread(struct arch_thread *thread) +{ +} + +static inline void arch_copy_thread(struct arch_thread *from, + struct arch_thread *to) +{ + to->fs = from->fs; +} + +#include <asm/user.h> + +#define current_text_addr() \ + ({ void *pc; __asm__("movq $1f,%0\n1:":"=g" (pc)); pc; }) + +#define ARCH_IS_STACKGROW(address) \ + (address + 128 >= UPT_SP(¤t->thread.regs.regs)) + +#define KSTK_EIP(tsk) KSTK_REG(tsk, RIP) +#define KSTK_ESP(tsk) KSTK_REG(tsk, RSP) + +#endif |