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47 lines
1.1 KiB
47 lines
1.1 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <elf.h>
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void* findVdso(void* auxv_start)
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{
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#ifdef TARGET_IA32
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Elf32_auxv_t * auxv = (Elf32_auxv_t *) auxv_start ;
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void* vdso = (void*)0xffffe000;
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#else
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Elf64_auxv_t * auxv = (Elf64_auxv_t *) auxv_start ;
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void* vdso = (void*)0xffffffffff600000;
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#endif
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for ( ; auxv->a_type != AT_NULL ; auxv++ )
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{
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if ( auxv->a_type == AT_SYSINFO_EHDR )
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{
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return (void*)auxv->a_un.a_val;
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}
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}
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return vdso;
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}
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int main( int argc, char **argv, char **envp )
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{
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while ( *envp++ != NULL );
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void* vdso = findVdso(envp);
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printf("%p:%p\n", vdso, vdso + getpagesize());
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return 0;
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}
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