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Gentoo's Bugzilla – Attachment 348418 Details for
Bug 469962
sys-apps/rng-tools-4-r5 - TEXTREL in usr/sbin/rngd due to rdrand_asm.S
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[patch]
Same patch but making vapier happy after (c|p)utting a smile on his face :P
add-pic-to-rdrand.patch (text/plain), 1.98 KB, created by
Francisco Blas Izquierdo Riera
on 2013-05-15 18:46:51 UTC
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Description:
Same patch but making vapier happy after (c|p)utting a smile on his face :P
Filename:
MIME Type:
Creator:
Francisco Blas Izquierdo Riera
Created:
2013-05-15 18:46:51 UTC
Size:
1.98 KB
patch
obsolete
>From: Francisco Blas Izquierdo Riera (klondike) <klondike@gentoo.org> >Subject: [PATCH] Fix assemby textrels on rdrand_asm.S on PIC x86 > >This patch fixes the assembly in rdrand_asm.S so it won't generate textrels on PIC systems. >The main fixes are in the use of leal in SETPTR for such systems, the rest is the usual PIC >support stuff. > >This should fix Gentoo bug #469962 > >This patch is released under the GPLv2 or a higher version license as is the original file >as long as reference to the author and the tester are included in the final code. > >Gentoo-bug-url: https://bugs.gentoo.org/show_bug.cgi?id=469962 >Upstream-status: Not sent yet >Signed-off-by: Francisco Blas Izquierdo Riera (klondike) <klondike@gentoo.org> >Reported-by: cilly <cilly@cilly.mine.nu> >Tested-by: Anthony Basile <blueness@gentoo.org> > >--- rng-tools/rdrand_asm.S >+++ rng-tools/rdrand_asm.S >@@ -49,6 +49,7 @@ > ret > ENDPROC(x86_rdrand_nlong) > >+#define INIT_PIC() > #define SETPTR(var,ptr) leaq var(%rip),ptr > #define PTR0 %rdi > #define PTR1 %rsi >@@ -84,7 +85,16 @@ > ret > ENDPROC(x86_rdrand_nlong) > >+#if defined(__PIC__) >+#undef __i686 /* gcc builtin define gets in our way */ >+#define INIT_PIC() \ >+ call __i686.get_pc_thunk.bx ; \ >+ addl $_GLOBAL_OFFSET_TABLE_, %ebx >+#define SETPTR(var,ptr) leal (var)@GOTOFF(%ebx),ptr >+#else >+#define INIT_PIC() > #define SETPTR(var,ptr) movl $(var),ptr >+#endif > #define PTR0 %eax > #define PTR1 %edx > #define PTR2 %ecx >@@ -101,6 +111,7 @@ > movl 8(%ebp), %eax > movl 12(%ebp), %edx > #endif >+ INIT_PIC() > > SETPTR(aes_round_keys, PTR2) > >@@ -166,6 +177,17 @@ > #endif > ret > ENDPROC(x86_aes_mangle) >+ >+#if defined(__i386__) && defined(__PIC__) >+ .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits >+.globl __i686.get_pc_thunk.bx >+ .hidden __i686.get_pc_thunk.bx >+ .type __i686.get_pc_thunk.bx,@function >+__i686.get_pc_thunk.bx: >+ movl (%esp), %ebx >+ ret >+#endif >+ > /* > * AES round keys for an arbitrary key: > * 00102030405060708090A0B0C0D0E0F0
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bug 469962
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