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mirror of https://git.FreeBSD.org/src.git synced 2024-12-29 12:03:03 +00:00

Add simple macros for tracing in assembler files. There are quite

a few places where we cannot even call a function, and these have
proven to be very useful debugging tools for such situations.
This commit is contained in:
Jake Burkholder 2001-09-03 22:32:49 +00:00
parent 3d450a75c1
commit a78f8e2104
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=82900

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sys/sparc64/include/ktr.h Normal file
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/*-
* Copyright (c) 1996 Berkeley Software Design, Inc. 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.
* 3. Berkeley Software Design Inc's name may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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.
*
* from BSDI $Id: ktr.h,v 1.10.2.7 2000/03/16 21:44:42 cp Exp $
* $FreeBSD$
*/
#ifndef _MACHINE_KTR_H_
#define _MACHINE_KTR_H_
#ifdef LOCORE
#define AND(var, mask, r1, r2, r3, l1) \
setx var, r2, r1 ; \
setx mask, r3, r2 ; \
lduw [r1], r3 ; \
and r2, r3, r1
#define TEST(var, mask, r1, r2, r3, l1) \
AND(var, mask, r1, r2, r3, l1) ; \
brz r1, l1 ## f ; \
nop
/*
* XXX doesn't do timestamp or ktr_cpu.
*/
#define ATR(desc, r1, r2, r3, l1, l2) \
.sect .rodata ; \
l1 ## : .asciz desc ; \
.previous ; \
set ktr_idx, r1 ; \
lduw [r1], r2 ; \
l2 ## : add r2, 1, r3 ; \
casa [r1] ASI_N, r2, r3 ; \
cmp r2, r3 ; \
bne %icc, l2 ## b ; \
mov r3, r2 ; \
set ktr_buf, r1 ; \
mulx r2, KTR_SIZEOF, r2 ; \
add r1, r2, r1 ; \
set l1 ## b, r2 ; \
stx r2, [r1 + KTR_DESC]
#define CATR(mask, desc, r1, r2, r3, l1, l2, l3) \
TEST(ktr_mask, mask, r1, r2, r3, l3) ; \
ATR(desc, r1, r2, r3, l1, l2)
/*
* XXX crude conditional breakpoint and sir
*/
#define CBPT(mask, r1, r2, r3, l1) \
TEST(ktr_mask, mask, r1, r2, r3, l1) ; \
DEBUGGER() ; \
l1 ## :
#define CSIR(mask, r1, r2, r3, l1) \
TEST(ktr_mask, mask, r1, r2, r3, l1) ; \
sir 42 ; \
l1 ## :
#endif /* LOCORE */
#endif /* !_MACHINE_KTR_H_ */