124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)profile.h 8.1 (Berkeley) 6/11/93
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*/
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#ifndef _MACHINE_PROFILE_H_
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#define _MACHINE_PROFILE_H_
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/*
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* Config generates something to tell the compiler to align functions on 32
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* byte boundaries. A strict alignment is good for keeping the tables small.
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*/
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#define FUNCTION_ALIGNMENT 16
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#define _MCOUNT_DECL void mcount
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typedef u_long fptrdiff_t;
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/*
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* Cannot implement mcount in C as GCC will trash the ip register when it
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* pushes a trapframe. Pity we cannot insert assembly before the function
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* prologue.
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*/
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#ifndef PLTSYM
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#define PLTSYM
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#endif
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#define MCOUNT \
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__asm__(".text"); \
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__asm__(".align 2"); \
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__asm__(".type __mcount ,%function"); \
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__asm__(".global __mcount"); \
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__asm__("__mcount:"); \
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/* \
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* Preserve registers that are trashed during mcount \
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*/ \
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__asm__("stmfd sp!, {r0-r3, ip, lr}"); \
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/* \
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* find the return address for mcount, \
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* and the return address for mcount's caller. \
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* \
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* frompcindex = pc pushed by call into self. \
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*/ \
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__asm__("mov r0, ip"); \
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/* \
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* selfpc = pc pushed by mcount call \
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*/ \
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__asm__("mov r1, lr"); \
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/* \
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* Call the real mcount code \
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*/ \
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__asm__("bl mcount"); \
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/* \
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* Restore registers that were trashed during mcount \
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*/ \
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__asm__("ldmfd sp!, {r0-r3, lr}"); \
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/* \
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* Return to the caller. Loading lr and pc in one instruction \
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* is deprecated on ARMv7 so we need this on its own. \
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*/ \
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__asm__("ldmfd sp!, {pc}");
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void bintr(void);
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void btrap(void);
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void eintr(void);
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void user(void);
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#define MCOUNT_FROMPC_USER(pc) \
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((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? (uintfptr_t)user : pc)
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#define MCOUNT_FROMPC_INTR(pc) \
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((pc >= (uintfptr_t)btrap && pc < (uintfptr_t)eintr) ? \
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((pc >= (uintfptr_t)bintr) ? (uintfptr_t)bintr : \
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(uintfptr_t)btrap) : ~0U)
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#ifdef _KERNEL
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#define MCOUNT_DECL(s) register_t s;
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#include <machine/asm.h>
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#include <machine/cpufunc.h>
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#define MCOUNT_ENTER(s) {s = intr_disable(); } /* kill IRQ */
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#define MCOUNT_EXIT(s) {intr_restore(s); } /* restore old value */
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void mcount(uintfptr_t frompc, uintfptr_t selfpc);
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#else
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typedef u_int uintfptr_t;
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#endif /* _KERNEL */
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#endif /* !_MACHINE_PROFILE_H_ */
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