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29363fb446
Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-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. 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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#ifdef __i386__
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#include <i386/profile.h>
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#else /* !__i386__ */
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#ifndef _MACHINE_PROFILE_H_
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#define _MACHINE_PROFILE_H_
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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#define FUNCTION_ALIGNMENT 4
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#define _MCOUNT_DECL \
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static void _mcount(uintfptr_t frompc, uintfptr_t selfpc) __used; \
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static void _mcount
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#define MCOUNT __asm(" \n\
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.text \n\
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.p2align 4,0x90 \n\
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.globl .mcount \n\
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.type .mcount,@function \n\
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.mcount: \n\
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pushq %rdi \n\
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pushq %rsi \n\
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pushq %rdx \n\
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pushq %rcx \n\
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pushq %r8 \n\
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pushq %r9 \n\
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pushq %rax \n\
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movq 8(%rbp),%rdi \n\
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movq 7*8(%rsp),%rsi \n\
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call _mcount \n\
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popq %rax \n\
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popq %r9 \n\
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popq %r8 \n\
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popq %rcx \n\
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popq %rdx \n\
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popq %rsi \n\
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popq %rdi \n\
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ret \n\
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.size .mcount, . - .mcount");
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#if 0
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/*
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* We could use this, except it doesn't preserve the registers that were
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* being passed with arguments to the function that we were inserted
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* into. I've left it here as documentation of what the code above is
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* supposed to do.
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*/
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#define MCOUNT \
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void \
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mcount() \
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{ \
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uintfptr_t selfpc, frompc; \
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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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* selfpc = pc pushed by call to mcount \
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*/ \
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__asm("movq 8(%%rbp),%0" : "=r" (selfpc)); \
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/* \
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* frompc = pc pushed by call to mcount's caller. \
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* The caller's stack frame has already been built, so %rbp is \
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* the caller's frame pointer. The caller's raddr is in the \
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* caller's frame following the caller's caller's frame pointer.\
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*/ \
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__asm("movq (%%rbp),%0" : "=r" (frompc)); \
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frompc = ((uintfptr_t *)frompc)[1]; \
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_mcount(frompc, selfpc); \
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}
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#endif
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typedef u_long uintfptr_t;
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/*
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* An unsigned integral type that can hold non-negative difference between
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* function pointers.
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*/
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typedef u_long fptrdiff_t;
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__BEGIN_DECLS
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void mcount(void) __asm(".mcount");
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__END_DECLS
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#endif /* !_KERNEL */
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#endif /* !_MACHINE_PROFILE_H_ */
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#endif /* __i386__ */
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