6c2806594b
Currently this argument is a pointer into the stack which is used by FBT to fetch the first five probe arguments. On all non-x86 architectures it's simply the trapframe address, so this change has no functional impact. On amd64 it's a pointer into the trapframe such that stack[1 .. 5] gives the first five argument registers, which are deliberately grouped together in the amd64 trapframe definition. A trapframe argument simplifies the invop handlers on !x86 and makes the x86 FBT invop handler easier to understand. Moreover, it allows for invop handlers that may want to modify the register set of the interrupted thread.
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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* Portions Copyright 2006-2008 John Birrell jb@freebsd.org
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*
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* $FreeBSD$
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*
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _FBT_H_
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#define _FBT_H_
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#include "fbt_isa.h"
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typedef struct fbt_probe {
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struct fbt_probe *fbtp_hashnext;
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fbt_patchval_t *fbtp_patchpoint;
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int8_t fbtp_rval;
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fbt_patchval_t fbtp_patchval;
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fbt_patchval_t fbtp_savedval;
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uintptr_t fbtp_roffset;
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dtrace_id_t fbtp_id;
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const char *fbtp_name;
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modctl_t *fbtp_ctl;
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int fbtp_loadcnt;
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int fbtp_symindx;
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struct fbt_probe *fbtp_next;
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} fbt_probe_t;
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struct linker_file;
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struct linker_symval;
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struct trapframe;
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int fbt_invop(uintptr_t, struct trapframe *, uintptr_t);
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void fbt_patch_tracepoint(fbt_probe_t *, fbt_patchval_t);
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int fbt_provide_module_function(struct linker_file *, int,
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struct linker_symval *, void *);
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int fbt_excluded(const char *name);
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extern dtrace_provider_id_t fbt_id;
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extern fbt_probe_t **fbt_probetab;
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extern int fbt_probetab_mask;
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#define FBT_ADDR2NDX(addr) ((((uintptr_t)(addr)) >> 4) & fbt_probetab_mask)
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#define FBT_PROBETAB_SIZE 0x8000 /* 32k entries -- 128K total */
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_FBT);
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#endif
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#endif
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