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:~#
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