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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)profile.h 8.1 (Berkeley) 6/11/93
* $FreeBSD$
*/
#ifndef _MACHINE_PROFILE_H_
#define _MACHINE_PROFILE_H_
/*
* Config generates something to tell the compiler to align functions on 32
* byte boundaries. A strict alignment is good for keeping the tables small.
*/
#define FUNCTION_ALIGNMENT 16
#define _MCOUNT_DECL void mcount
typedef u_long fptrdiff_t;
/*
* 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.
*/
#ifndef PLTSYM
#define PLTSYM
#endif
#define MCOUNT \
__asm__(".text"); \
__asm__(".align 2"); \
__asm__(".type __mcount ,%function"); \
__asm__(".global __mcount"); \
__asm__("__mcount:"); \
/* \
* Preserve registers that are trashed during mcount \
*/ \
__asm__("stmfd sp!, {r0-r3, ip, 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, lr}"); \
/* \
* Return to the caller. Loading lr and pc in one instruction \
* is deprecated on ARMv7 so we need this on its own. \
*/ \
__asm__("ldmfd sp!, {pc}");
void bintr(void);
void btrap(void);
void eintr(void);
void user(void);
#define MCOUNT_FROMPC_USER(pc) \
((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? (uintfptr_t)user : pc)
#define MCOUNT_FROMPC_INTR(pc) \
((pc >= (uintfptr_t)btrap && pc < (uintfptr_t)eintr) ? \
((pc >= (uintfptr_t)bintr) ? (uintfptr_t)bintr : \
(uintfptr_t)btrap) : ~0U)
#ifdef _KERNEL
#define MCOUNT_DECL(s) register_t s;
#include <machine/asm.h>
#include <machine/cpufunc.h>
/*
* splhigh() and splx() are heavyweight, and call mcount(). Therefore
* we disabled interrupts (IRQ, but not FIQ) directly on the CPU.
*
* We're lucky that the CPSR and 's' both happen to be 'int's.
*/
#define MCOUNT_ENTER(s) {s = intr_disable(); } /* kill IRQ */
#define MCOUNT_EXIT(s) {intr_restore(s); } /* restore old value */
void mcount(uintfptr_t frompc, uintfptr_t selfpc);
#else
typedef u_int uintfptr_t;
#endif /* _KERNEL */
#endif /* !_MACHINE_PROFILE_H_ */
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