9da7bdde06
The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Initially, only tag files that use BSD 4-Clause "Original" license. RelNotes: yes Differential Revision: https://reviews.freebsd.org/D13133
133 lines
4.3 KiB
C
133 lines
4.3 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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* $FreeBSD$
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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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/*
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* splhigh() and splx() are heavyweight, and call mcount(). Therefore
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* we disabled interrupts (IRQ, but not FIQ) directly on the CPU.
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*
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* We're lucky that the CPSR and 's' both happen to be 'int's.
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*/
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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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