7e1f6dfe9d
- The MD functions critical_enter/exit are renamed to start with a cpu_ prefix. - MI wrapper functions critical_enter/exit maintain a per-thread nesting count and a per-thread critical section saved state set when entering a critical section while at nesting level 0 and restored when exiting to nesting level 0. This moves the saved state out of spin mutexes so that interlocking spin mutexes works properly. - Most low-level MD code that used critical_enter/exit now use cpu_critical_enter/exit. MI code such as device drivers and spin mutexes use the MI wrappers. Note that since the MI wrappers store the state in the current thread, they do not have any return values or arguments. - mtx_intr_enable() is replaced with a constant CRITICAL_FORK which is assigned to curthread->td_savecrit during fork_exit(). Tested on: i386, alpha
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: profile.h,v 1.9 1997/04/06 08:47:37 cgd Exp */
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/*
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* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#define _MCOUNT_DECL void mcount
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#define FUNCTION_ALIGNMENT 32
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typedef u_long fptrdiff_t;
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#define MCOUNT __asm (" \n\
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.globl _mcount \n\
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.proc _mcount \n\
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_mcount: \n\
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alloc loc0=ar.pfs,8,7,2,0 // space to save r8-r11,rp,b7 \n\
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add sp=-8*16,sp // space to save f8-f15 \n\
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mov loc1=rp // caller's return address \n\
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mov loc2=b7 // our return back to caller \n\
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;; \n\
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add r17=16,sp // leave 16 bytes for mcount \n\
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add r18=32,sp \n\
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;; \n\
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mov loc3=r8 // structure return address \n\
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mov loc4=r9 // language specific \n\
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mov loc5=r10 // language specific \n\
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mov loc6=r11 // language specific \n\
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;; \n\
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stf.spill [r17]=f8,32 // save float arguments \n\
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stf.spill [r18]=f9,32 \n\
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mov out0=rp // frompc \n\
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;; \n\
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stf.spill [r17]=f10,32 \n\
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stf.spill [r18]=f11,32 \n\
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mov out1=b7 // selfpc \n\
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;; \n\
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stf.spill [r17]=f12,32 \n\
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stf.spill [r18]=f13,32 \n\
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;; \n\
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stf.spill [r17]=f14,32 \n\
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stf.spill [r18]=f15,32 \n\
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;; \n\
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br.call.sptk.many rp=mcount \n\
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;; \n\
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add r17=16,sp \n\
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add r18=32,sp \n\
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;; \n\
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ldf.fill f8=[r17],32 \n\
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ldf.fill f9=[r18],32 \n\
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mov r8=loc3 // restore structure pointer \n\
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;; \n\
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ldf.fill f10=[r17],32 // restore float arguments \n\
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ldf.fill f11=[r18],32 \n\
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mov r9=loc4 \n\
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;; \n\
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ldf.fill f12=[r17],32 // etc. \n\
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ldf.fill f13=[r18],32 \n\
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mov r10=loc5 \n\
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;; \n\
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ldf.fill f14=[r17],32 \n\
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ldf.fill f15=[r18],32 \n\
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mov r11=loc6 \n\
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;; \n\
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mov b7=loc2 // clean up \n\
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mov rp=loc1 \n\
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mov ar.pfs=loc0 \n\
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;; \n\
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alloc r14=ar.pfs,0,0,8,0 // drop our register frame \n\
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br.sptk.many b7 // back to caller \n\
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\n\
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.end _mcount");
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#ifdef _KERNEL
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/*
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* The following two macros do splhigh and splx respectively.
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*/
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#define MCOUNT_ENTER(s) \n\
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_c = cpu_critical_enter()
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#define MCOUNT_EXIT(s) \n\
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cpu_critical_exit(_c)
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#define MCOUNT_DECL(s) critical_t c;
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#ifdef GUPROF
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struct gmonparam;
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void nullfunc_loop_profiled __P((void));
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void nullfunc_profiled __P((void));
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void startguprof __P((struct gmonparam *p));
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void stopguprof __P((struct gmonparam *p));
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#else
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#define startguprof(p)
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#define stopguprof(p)
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#endif /* GUPROF */
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#else /* !_KERNEL */
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typedef u_long uintfptr_t;
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#endif
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