.. | .. |
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16 | 16 | ELFNOTE_END |
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17 | 17 | |
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18 | 18 | BUILD_SALT |
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19 | | - |
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20 | | -#ifdef CONFIG_XEN |
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21 | | -/* |
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22 | | - * Add a special note telling glibc's dynamic linker a fake hardware |
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23 | | - * flavor that it will use to choose the search path for libraries in the |
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24 | | - * same way it uses real hardware capabilities like "mmx". |
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25 | | - * We supply "nosegneg" as the fake capability, to indicate that we |
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26 | | - * do not like negative offsets in instructions using segment overrides, |
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27 | | - * since we implement those inefficiently. This makes it possible to |
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28 | | - * install libraries optimized to avoid those access patterns in someplace |
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29 | | - * like /lib/i686/tls/nosegneg. Note that an /etc/ld.so.conf.d/file |
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30 | | - * corresponding to the bits here is needed to make ldconfig work right. |
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31 | | - * It should contain: |
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32 | | - * hwcap 1 nosegneg |
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33 | | - * to match the mapping of bit to name that we give here. |
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34 | | - * |
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35 | | - * At runtime, the fake hardware feature will be considered to be present |
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36 | | - * if its bit is set in the mask word. So, we start with the mask 0, and |
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37 | | - * at boot time we set VDSO_NOTE_NONEGSEG_BIT if running under Xen. |
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38 | | - */ |
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39 | | - |
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40 | | -#include "../../xen/vdso.h" /* Defines VDSO_NOTE_NONEGSEG_BIT. */ |
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41 | | - |
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42 | | -ELFNOTE_START(GNU, 2, "a") |
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43 | | - .long 1 /* ncaps */ |
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44 | | -VDSO32_NOTE_MASK: /* Symbol used by arch/x86/xen/setup.c */ |
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45 | | - .long 0 /* mask */ |
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46 | | - .byte VDSO_NOTE_NONEGSEG_BIT; .asciz "nosegneg" /* bit, name */ |
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47 | | -ELFNOTE_END |
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48 | | -#endif |
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