NetBSD/sys/arch/arm32/include/profile.h

102 lines
3.5 KiB
C

/* $NetBSD: profile.h,v 1.4 1996/10/14 22:52:49 mark Exp $ */
/*
* Copyright (c) 1995-1996 Mark Brinicombe
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*#define _MCOUNT_DECL static inline void _mcount*/
#define _MCOUNT_DECL static void _mcount
/*
* Cannot implement mcount in C as GCC will trash the ip register when it
* pushes a trapframe. Pity we cannot insert assembly before the function
* prologue.
*/
#if 0
#define MCOUNT \
extern void mcount() asm("mcount"); \
void \
mcount() \
{ \
register int selfpc, frompcindex; \
/* \
* find the return address for mcount, \
* and the return address for mcount's caller. \
* \
* selfpc = pc pushed by mcount call \
*/ \
asm("stmfd\tsp!, {r0-r3}"); \
asm("mov\t%0, lr" : "=r" (selfpc)); \
/* \
* frompcindex = pc pushed by call into self. \
*/ \
asm("mov\t%0, ip" : "=r" (frompcindex)); \
_mcount(frompcindex, selfpc); \
asm("ldmfd\tsp!, {r0-r3}"); \
}
#else
#define MCOUNT \
asm(".text"); \
asm(".align 0"); \
asm(".type mcount, @function"); \
asm(".global mcount"); \
asm("mcount:"); \
/* \
* Preserve registers that are trashed during mcount \
*/ \
asm("stmfd sp!, {r0-r3,lr}"); \
/* \
* find the return address for mcount, \
* and the return address for mcount's caller. \
* \
* frompcindex = pc pushed by call into self. \
*/ \
asm("mov r0, ip"); \
/* \
* selfpc = pc pushed by mcount call \
*/ \
asm("mov r1, lr"); \
/* \
* Call the real mcount code \
*/ \
asm("bl __mcount"); \
/* \
* Restore registers that were trashed during mcount \
*/ \
asm("ldmfd sp!, {r0-r3,pc}");
#endif
#ifdef _KERNEL
/*
* Note that we assume splhigh() and splx() cannot call mcount()
* recursively.
*/
#define MCOUNT_ENTER s = splhigh()
#define MCOUNT_EXIT splx(s)
#endif /* _KERNEL */