2 * Copyright (c) 1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #ifndef _MACHINE_CPUFUNC_H_
30 #define _MACHINE_CPUFUNC_H_
33 * Required for user-space atomic.h includes
39 __asm __volatile("eieio; sync" : : : "memory");
44 #include <sys/types.h>
46 #include <machine/psl.h>
51 void ppc_db_trap(void);
62 /* CPU register mangling inlines */
65 mtmsr(register_t value)
68 __asm __volatile ("mtmsr %0; isync" :: "r"(value));
71 static __inline register_t
76 __asm __volatile ("mfmsr %0" : "=r"(value));
82 mtsrin(vm_offset_t va, register_t value)
85 __asm __volatile ("mtsrin %0,%1" :: "r"(value), "r"(va));
88 static __inline register_t
89 mfsrin(vm_offset_t va)
93 __asm __volatile ("mfsrin %0,%1" : "=r"(value) : "r"(va));
99 mtdec(register_t value)
102 __asm __volatile ("mtdec %0" :: "r"(value));
105 static __inline register_t
110 __asm __volatile ("mfdec %0" : "=r"(value));
115 static __inline register_t
120 __asm __volatile ("mfpvr %0" : "=r"(value));
129 __asm __volatile ("eieio");
136 __asm __volatile ("isync");
139 static __inline register_t
145 mtmsr(msr & ~PSL_EE);
150 intr_restore(register_t msr)
157 restore_intr(unsigned int msr)
163 static __inline struct pcpu *
164 powerpc_get_pcpup(void)
168 __asm ("mfsprg %0, 0" : "=r"(ret));
175 #endif /* !_MACHINE_CPUFUNC_H_ */