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Introduce tf_snprintf

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This is a reduced version of `snprintf` that only supports formats '%d',
'%i' and '%u'. It can be used when the full `snprintf` is not needed in
order to save memory. If it finds an unknown format specifier, it
prints an error message and panics.

Change-Id: I2cb06fcdf74cda2c43caf73ae0762a91499fc04e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
This commit is contained in:
Antonio Nino Diaz 2017-05-17 15:34:22 +01:00
parent c1de3fdd32
commit da5241cb15
3 changed files with 110 additions and 0 deletions
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include/common/debug.h
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@ -64,6 +64,7 @@ void __dead2 do_panic(void);
void __dead2 __stack_chk_fail(void);
void tf_printf(const char *fmt, ...) __printflike(1, 2);
int tf_snprintf(char *s, size_t n, const char *fmt, ...) __printflike(3, 4);
#endif /* __ASSEMBLY__ */
#endif /* __DEBUG_H__ */