linux/include/asm-powerpc/auxvec.h

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#ifndef _ASM_POWERPC_AUXVEC_H
#define _ASM_POWERPC_AUXVEC_H
/*
* We need to put in some extra aux table entries to tell glibc what
* the cache block size is, so it can use the dcbz instruction safely.
*/
#define AT_DCACHEBSIZE 19
#define AT_ICACHEBSIZE 20
#define AT_UCACHEBSIZE 21
/* A special ignored type value for PPC, for glibc compatibility. */
#define AT_IGNOREPPC 22
/* The vDSO location. We have to use the same value as x86 for glibc's
* sake :-)
*/
#ifdef __powerpc64__
#define AT_SYSINFO_EHDR 33
#endif
#endif