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Profiling fixes from Ethan Solomita <ethan@geocast.com>. 

Merge Kernel MCOUNT and user MCOUNT.

The earlier code which was inserted to call _mcount in profiling
assembler routines is busted badly.  This gets it working with PIC
code and should work with any arbitrary assembler routine.
This commit is contained in:
castor 2000-06-12 23:42:10 +00:00
parent 58ca6aac15
commit 751cd4ffb0
1 changed files with 18 additions and 13 deletions
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31
sys/arch/mips/include/asm.h
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@ -1,4 +1,4 @@
/* $NetBSD: asm.h,v 1.22 1999/04/24 08:10:33 simonb Exp $ */ /* $NetBSD: asm.h,v 1.23 2000/06/12 23:42:10 castor Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -62,21 +62,26 @@
/* /*
* Define -pg profile entry code. * Define -pg profile entry code.
* XXX assume .set noreorder for kernel, .set reorder for user code. * Must always be noreorder, must never use a macro instruction
* Final addiu to t9 must always equal the size of this _KERN_MCOUNT
*/ */
#define _KERN_MCOUNT \ #define _KERN_MCOUNT \
.set noat; \ .set push; \
move $1,$31; \ .set noreorder; \
jal _mcount; \ .set noat; \
subu sp,sp,8; \ sw t9,-4(sp); \
.set at move AT,ra; \
lui t9,%hi(_mcount); \
addiu t9,t9,%lo(_mcount); \
jalr t9; \
subu sp,sp,16; \
lw t9,4(sp); \
addiu sp,sp,8; \
addiu t9,t9,36; \
.set pop;
#ifdef GPROF #ifdef GPROF
# if defined(_KERNEL) || defined(_LOCORE) #define MCOUNT _KERN_MCOUNT
# define MCOUNT _KERN_MCOUNT
# else
# define MCOUNT .set noreorder; _KERN_MCOUNT ; .set reorder;
# endif
#else #else
#define MCOUNT #define MCOUNT
#endif #endif