Req #53310 [NEW]: fpm_atomic.h uses SPARC v9 only code, doesn't work on v8

From: Date: Sun, 14 Nov 2010 23:21:55 +0000
Subject: Req #53310 [NEW]: fpm_atomic.h uses SPARC v9 only code, doesn't work on v8
Groups: php.bugs 
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From:             
Operating system: Linux (Debian for Sparc)
PHP version:      5.3.3
Package:          FPM related
Bug Type:         Feature/Change Request
Bug description:fpm_atomic.h uses SPARC v9 only code, doesn't work on v8

Description:
------------
Compiling with PHP-FPM enabled on an older SPARC system will result in 

/tmp/cc6w5Fh0.s: Assembler messages:
/tmp/cc6w5Fh0.s:39: Error: Architecture mismatch on "cas".
/tmp/cc6w5Fh0.s:39:  (Requires v9|v9a|v9b; requested architecture is
sparclite.)

Unfortunately my knowledge of SPARC assembly language isn't nearly good
enough to fix that. I know that the v9 "cas" opcode does an atomic "compare
and swap" operation but I wouldn't know how to translate that into v8 code.


Test script:
---------------
Copy /sapi/fpm/fpm/fpm_atomic.h to fpm_atomic.c and add bogus main()
function:

int main () {
	int result;
	atomic_t mylock;
	result = fpm_spinlock(&mylock, 1);
}

Compile using "gcc -mcpu=v8 fpm_atomic.c" will result in error message
given.


Expected result:
----------------
Should compile without error.

Actual result:
--------------
sparky:~# gcc -mcpu=v8 fpm_atomic.c
/tmp/cciAbMrC.s: Assembler messages:
/tmp/cciAbMrC.s:121: Error: Architecture mismatch on "cas".
/tmp/cciAbMrC.s:121:  (Requires v9|v9a|v9b; requested architecture is
sparclite.)
sparky:~#

-- 
Edit bug report at http://bugs.php.net/bug.php?id=53310&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=53310&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=53310&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=53310&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=53310&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53310&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=53310&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=53310&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=53310&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=53310&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=53310&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=53310&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=53310&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=53310&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=53310&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=53310&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=53310&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=53310&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=53310&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=53310&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=53310&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=53310&r=mysqlcfg

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