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Merge of r4231, r4300, r4303, r4304: Configure/build changes and fixes: *) Revamped "configure --help" text. *) FreeBSD 10-current has recently gotten POSIX_FADV_* macros. A fix for the broken build applied. *) AIX 7 defines sys_nerr in errno.h, therefore <errno.h> included in the sys_nerr test. When sys_nerr and _sys_nerr are missed on a particular platform and our euristic for a maximum errno detection applied always print the maximum errno number we reached instead of printing void. This makes possible to build nginx on AIX 7.1. *) Made it possible to build/install from the SVN checkout.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 14 Dec 2011 13:34:16 +0000
parents 4d9ea73a627a
children d620f497c50f
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/
/ Copyright (C) Igor Sysoev
/


/  "casa   [%o2] 0x80, %o1, %o0"  and
/  "casxa  [%o2] 0x80, %o1, %o0"  do the following:
/
/       if ([%o2] == %o1) {
/           swap(%o0, [%o2]);
/       } else {
/           %o0 = [%o2];
/       }


/ ngx_atomic_uint_t ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old,
/      ngx_atomic_t *lock);
/
/ the arguments are passed in the %o0, %o1, %o2
/ the result is returned in the %o0

        .inline ngx_casa,0
        casa    [%o2] 0x80, %o1, %o0
        .end


/ ngx_atomic_uint_t ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old,
/      ngx_atomic_t *lock);
/
/ the arguments are passed in the %o0, %o1, %o2
/ the result is returned in the %o0

        .inline ngx_casxa,0
        casxa   [%o2] 0x80, %o1, %o0
        .end