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osdep: Create qemu_getauxval and qemu_init_auxval

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Abstract away dependence on a system implementation of getauxval.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-06-04 11:24:49 -07:00
parent 7dc65c02fe
commit b6a3e690b4
5 changed files with 102 additions and 0 deletions
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25
include/qemu/osdep.h
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@ -215,4 +215,29 @@ bool fips_get_state(void);
*/
char *qemu_get_local_state_pathname(const char *relative_pathname);
/**
* qemu_getauxval:
* @type: the auxiliary vector key to lookup
*
* Search the auxiliary vector for @type, returning the value
* or 0 if @type is not present.
*/
#if defined(CONFIG_GETAUXVAL) || defined(__linux__)
unsigned long qemu_getauxval(unsigned long type);
#else
static inline unsigned long qemu_getauxval(unsigned long type) { return 0; }
#endif
/**
* qemu_init_auxval:
* @envp: the third argument to main
*
* If supported and required, locate the auxiliary vector at program startup.
*/
#if defined(CONFIG_GETAUXVAL) || !defined(__linux__)
static inline void qemu_init_auxval(char **envp) { }
#else
void qemu_init_auxval(char **envp);
#endif
#endif