The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sparc64/include/profile.h

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    1 /*-
    2  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
    3  * All rights reserved.
    4  *
    5  * Author: Chris G. Demetriou
    6  * 
    7  * Permission to use, copy, modify and distribute this software and
    8  * its documentation is hereby granted, provided that both the copyright
    9  * notice and this permission notice appear in all copies of the
   10  * software, derivative works or modified versions, and any portions
   11  * thereof, and that both notices appear in supporting documentation.
   12  * 
   13  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
   14  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
   15  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   16  * 
   17  * Carnegie Mellon requests users of this software to return to
   18  *
   19  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   20  *  School of Computer Science
   21  *  Carnegie Mellon University
   22  *  Pittsburgh PA 15213-3890
   23  *
   24  * any improvements or extensions that they make and grant Carnegie the
   25  * rights to redistribute these changes.
   26  *
   27  *      from: NetBSD: profile.h,v 1.9 1997/04/06 08:47:37 cgd Exp
   28  *      from: FreeBSD: src/sys/alpha/include/profile.h,v 1.4 1999/12/29
   29  * $FreeBSD: releng/8.2/sys/sparc64/include/profile.h 169488 2007-05-11 23:43:55Z marius $
   30  */
   31 
   32 #ifndef _MACHINE_PROFILE_H_
   33 #define _MACHINE_PROFILE_H_
   34 
   35 #if !defined(_KERNEL) && !defined(_SYS_CDEFS_H_)
   36 #error this file needs sys/cdefs.h as a prerequisite
   37 #endif
   38 
   39 #define FUNCTION_ALIGNMENT      32
   40 
   41 typedef u_long  fptrdiff_t;
   42 
   43 #ifdef _KERNEL
   44 
   45 #include <machine/cpufunc.h>
   46 #include <machine/intr_machdep.h>
   47 
   48 #define _MCOUNT_DECL    void mcount
   49 #define MCOUNT
   50 
   51 #define MCOUNT_DECL(s)  register_t s;
   52 #define MCOUNT_ENTER(s) s = rdpr(pil); wrpr(pil, 0, PIL_TICK)
   53 #define MCOUNT_EXIT(s)  wrpr(pil, 0, s)
   54 
   55 void bintr(void);
   56 void btrap(void);
   57 void eintr(void);
   58 void user(void);
   59 
   60 #define MCOUNT_FROMPC_USER(pc)                                  \
   61         ((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? (uintfptr_t)user : pc)
   62 
   63 #define MCOUNT_FROMPC_INTR(pc)                                  \
   64         ((pc >= (uintfptr_t)btrap && pc < (uintfptr_t)eintr) ?  \
   65             ((pc >= (uintfptr_t)bintr) ? (uintfptr_t)bintr :    \
   66                 (uintfptr_t)btrap) : ~0UL)
   67 
   68 void    mcount(uintfptr_t frompc, uintfptr_t selfpc);
   69 
   70 #else /* !_KERNEL */
   71 
   72 typedef u_long  uintfptr_t;
   73 
   74 #define _MCOUNT_DECL    static __inline void __mcount
   75 
   76 #ifdef __GNUCLIKE_ASM
   77 #define MCOUNT                                                          \
   78 void                                                                    \
   79 _mcount()                                                               \
   80 {                                                                       \
   81         uintfptr_t frompc, selfpc;                                      \
   82                                                                         \
   83         /*                                                              \
   84          * Find the return address for mcount,                          \
   85          * and the return address for mcount's caller.                  \
   86          *                                                              \
   87          * selfpc = pc pushed by call to mcount                         \
   88          */                                                             \
   89         __asm("add %%o7, 8, %0" : "=r" (selfpc));                       \
   90         /*                                                              \
   91          * frompc = pc pushed by call to mcount's caller.               \
   92          */                                                             \
   93         __asm("add %%i7, 8, %0" : "=r" (frompc));                       \
   94         __mcount(frompc, selfpc);                                       \
   95 }
   96 #else /* !__GNUCLIKE_ASM */
   97 #define MCOUNT
   98 #endif /* __GNUCLIKE_ASM */
   99 
  100 #endif /* _KERNEL */
  101 
  102 #endif /* !_MACHINE_PROFILE_H_ */

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