a5f50ef9e4
place. This moves the dependency on GCC's and other compiler's features into the central sys/cdefs.h file, while the individual source files can then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42. By now, GCC and ICC (the Intel compiler) have been actively tested on IA32 platforms by netchild. Extension to other compilers is supposed to be possible, of course. Submitted by: netchild Reviewed by: various developers on arch@, some time ago
171 lines
5.0 KiB
C
171 lines
5.0 KiB
C
/*-
|
|
* 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.
|
|
* 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_
|
|
|
|
#ifndef _SYS_CDEFS_H_
|
|
#error this file needs sys/cdefs.h as a prerequisite
|
|
#endif
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Config generates something to tell the compiler to align functions on 16
|
|
* byte boundaries. A strict alignment is good for keeping the tables small.
|
|
*/
|
|
#define FUNCTION_ALIGNMENT 16
|
|
|
|
/*
|
|
* The kernel uses assembler stubs instead of unportable inlines.
|
|
* This is mainly to save a little time when profiling is not enabled,
|
|
* which is the usual case for the kernel.
|
|
*/
|
|
#define _MCOUNT_DECL void mcount
|
|
#define MCOUNT
|
|
|
|
#ifdef GUPROF
|
|
#define MCOUNT_DECL(s)
|
|
#define MCOUNT_ENTER(s)
|
|
#define MCOUNT_EXIT(s)
|
|
#ifdef __GNUCLIKE_ASM
|
|
#define MCOUNT_OVERHEAD(label) \
|
|
__asm __volatile("pushl %0; call __mcount; popl %%ecx" \
|
|
: \
|
|
: "i" (profil) \
|
|
: "ax", "dx", "cx", "memory")
|
|
#define MEXITCOUNT_OVERHEAD() \
|
|
__asm __volatile("call .mexitcount; 1:" \
|
|
: : \
|
|
: "ax", "dx", "cx", "memory")
|
|
#define MEXITCOUNT_OVERHEAD_GETLABEL(labelp) \
|
|
__asm __volatile("movl $1b,%0" : "=rm" (labelp))
|
|
#elif defined(lint)
|
|
#define MCOUNT_OVERHEAD(label)
|
|
#define MEXITCOUNT_OVERHEAD()
|
|
#define MEXITCOUNT_OVERHEAD_GETLABEL()
|
|
#else
|
|
#error
|
|
#endif /* !__GNUCLIKE_ASM */
|
|
#else /* !GUPROF */
|
|
#define MCOUNT_DECL(s) u_long s;
|
|
#ifdef SMP
|
|
extern int mcount_lock;
|
|
#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); \
|
|
while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
|
|
/* nothing */ ; }
|
|
#define MCOUNT_EXIT(s) { atomic_store_rel_int(&mcount_lock, 0); \
|
|
write_eflags(s); }
|
|
#else
|
|
#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); }
|
|
#define MCOUNT_EXIT(s) (write_eflags(s))
|
|
#endif
|
|
#endif /* GUPROF */
|
|
|
|
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)
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
#define FUNCTION_ALIGNMENT 4
|
|
|
|
#define _MCOUNT_DECL static __inline void _mcount
|
|
|
|
#ifdef __GNUCLIKE_ASM
|
|
#define MCOUNT \
|
|
void \
|
|
mcount() \
|
|
{ \
|
|
uintfptr_t selfpc, frompc; \
|
|
/* \
|
|
* Find the return address for mcount, \
|
|
* and the return address for mcount's caller. \
|
|
* \
|
|
* selfpc = pc pushed by call to mcount \
|
|
*/ \
|
|
__asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \
|
|
/* \
|
|
* frompc = pc pushed by call to mcount's caller. \
|
|
* The caller's stack frame has already been built, so %ebp is \
|
|
* the caller's frame pointer. The caller's raddr is in the \
|
|
* caller's frame following the caller's caller's frame pointer.\
|
|
*/ \
|
|
__asm("movl (%%ebp),%0" : "=r" (frompc)); \
|
|
frompc = ((uintfptr_t *)frompc)[1]; \
|
|
_mcount(frompc, selfpc); \
|
|
}
|
|
#else /* !__GNUCLIKE_ASM */
|
|
void \
|
|
#define MCOUNT \
|
|
mcount() \
|
|
{ \
|
|
}
|
|
#endif /* __GNUCLIKE_ASM */
|
|
|
|
typedef u_int uintfptr_t;
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
/*
|
|
* An unsigned integral type that can hold non-negative difference between
|
|
* function pointers.
|
|
*/
|
|
typedef u_int fptrdiff_t;
|
|
|
|
#ifdef _KERNEL
|
|
|
|
void mcount(uintfptr_t frompc, uintfptr_t selfpc);
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
#ifdef __GNUCLIKE_ASM
|
|
void mcount(void) __asm(".mcount");
|
|
#endif
|
|
__END_DECLS
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_MACHINE_PROFILE_H_ */
|