Date: Wed, 21 Jun 2006 19:25:01 +0900 (JST) From: "Norikatsu Shigemura" <nork@FreeBSD.org> To: "Alexander Leidinger" <Alexander@Leidinger.net> Cc: freebsd-current@FreeBSD.org, Norikatsu Shigemura <nork@FreeBSD.org> Subject: Re: Linux-flashplugin7 & rtld - RFC Message-ID: <2692.219.127.74.121.1150885501.squirrel@mail.ninth-nine.com> In-Reply-To: <20060621121114.h6udocel5wsgg8sg@netchild.homeip.net> References: <44986777.6070601@FreeBSD.org> <20060621061437.GA53019@fit.vutbr.cz> <ygeodwn2fea.wl%ume@mahoroba.org> <2265.211.18.249.19.1150871779.squirrel@mail.ninth-nine.com> <20060621121114.h6udocel5wsgg8sg@netchild.homeip.net>
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> Quoting Norikatsu Shigemura <nork@freebsd.org> (from Wed, 21 Jun 2006 > 15:36:19 +0900 (JST)): >>> Nork-san says that it is hard to make LPW work on 7-CURRENT. But, he >>> is trying to make it work with another approach. >> Yes, I'm working Userland COMPAT_LINUX technology[TM]:-). > Can you be a little bit more verbose what this is? Just a high level > overview. I'm curious since I have some ideas about some kind of > cross-compatibility "something" too (a combination of objcopy, a > liblinux2bsd and maybe some libmap stuff). I'm implementing like following codes to libc/libm/libpthread on 7-current with SYMVER_ENABLED=yes. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #include <sys/types.h> #include <sys/cdefs.h> #define SYM_COMPAT(sym, impl, ver) \ __sym_compat(sym, impl, ver) #define GLIBC_SYMBOL_2(sym, major, minor) \ GLIBC_##major##_##minor##_##sym #define GLIBC_COMPAT_2(sym, major, minor) \ SYM_COMPAT(sym, GLIBC_SYMBOL_2(sym, major, minor), GLIBC_ ##major. ##minor); #include <string.h> /* * strcmp(3) */ GLIBC_COMPAT_2(strcmp, 2, 0); int GLIBC_SYMBOL_2(strcmp, 2, 0) (const char *s1, const char *s2) { int ret; ret = strcmp(s1, s2); dprintf("strcmp(\"%s\", \"%s\") = %d", s1, s2, ret); return ret; } - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - And Version.def, too. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - # $FreeBSD$ GLIBC_2.0 { strcmp; : } - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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