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Get the MIPS assembler syntax right. Also add a separate sync command;

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the reference I consulted yesterday said SC does a SYNC, but apparently
this is not true on newer MIPS processors, so be safe.
This commit is contained in:
Tom Lane 2005-08-27 16:22:48 +00:00
parent 338e28e234
commit 5824d02155
1 changed files with 6 additions and 4 deletions
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10
src/include/storage/s_lock.h
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@ -66,7 +66,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.137 2005/08/26 22:04:42 tgl Exp $ * $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.138 2005/08/27 16:22:48 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -455,6 +455,7 @@ do \
#if defined(__mips__) && !defined(__sgi) #if defined(__mips__) && !defined(__sgi)
/* Note: on SGI we use the OS' mutex ABI, see below */ /* Note: on SGI we use the OS' mutex ABI, see below */
/* Note: R10000 processors require a separate SYNC */
#define HAS_TEST_AND_SET #define HAS_TEST_AND_SET
typedef unsigned int slock_t; typedef unsigned int slock_t;
@ -474,11 +475,12 @@ tas(volatile slock_t *lock)
" .set noreorder \n" " .set noreorder \n"
" .set nomacro \n" " .set nomacro \n"
" ll %0, %2 \n" " ll %0, %2 \n"
" or %1, %0, $1 \n" " or %1, %0, 1 \n"
" sc %1, %2 \n" " sc %1, %2 \n"
" xori %1, $1 \n" " xori %1, 1 \n"
" or %0, %0, %1 \n" " or %0, %0, %1 \n"
"1: .set pop " " sync \n"
" .set pop "
: "=&r" (_res), "=&r" (_tmp), "+R" (*_l) : "=&r" (_res), "=&r" (_tmp), "+R" (*_l)
: :
: "memory"); : "memory");