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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2011-10-31 17:12:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-31 17:30:56 -0700 |
| commit | 1dff46d6987484eaa31f2fb1425216ba06418be3 (patch) | |
| tree | 421e53d64a066b1f756156bb1d37154c0a5eab6a /lib/vsprintf.c | |
| parent | b3c49c05b737887443c894c66635ae68dcdf0027 (diff) | |
| download | linux-1dff46d6987484eaa31f2fb1425216ba06418be3.tar.gz linux-1dff46d6987484eaa31f2fb1425216ba06418be3.tar.bz2 linux-1dff46d6987484eaa31f2fb1425216ba06418be3.zip | |
lib/kstrtox: common code between kstrto*() and simple_strto*() functions
Currently termination logic (\0 or \n\0) is hardcoded in _kstrtoull(),
avoid that for code reuse between kstrto*() and simple_strtoull().
Essentially, make them different only in termination logic.
simple_strtoull() (and scanf(), BTW) ignores integer overflow, that's a
bug we currently don't have guts to fix, making KSTRTOX_OVERFLOW hack
necessary.
Almost forgot: patch shrinks code size by about ~80 bytes on x86_64.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/vsprintf.c')
| -rw-r--r-- | lib/vsprintf.c | 33 |
1 files changed, 7 insertions, 26 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index d7222a9c8267..c1a3927326eb 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -31,17 +31,7 @@ #include <asm/div64.h> #include <asm/sections.h> /* for dereference_function_descriptor() */ -static unsigned int simple_guess_base(const char *cp) -{ - if (cp[0] == '0') { - if (_tolower(cp[1]) == 'x' && isxdigit(cp[2])) - return 16; - else - return 8; - } else { - return 10; - } -} +#include "kstrtox.h" /** * simple_strtoull - convert a string to an unsigned long long @@ -51,23 +41,14 @@ static unsigned int simple_guess_base(const char *cp) */ unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base) { - unsigned long long result = 0; + unsigned long long result; + unsigned int rv; - if (!base) - base = simple_guess_base(cp); + cp = _parse_integer_fixup_radix(cp, &base); + rv = _parse_integer(cp, base, &result); + /* FIXME */ + cp += (rv & ~KSTRTOX_OVERFLOW); - if (base == 16 && cp[0] == '0' && _tolower(cp[1]) == 'x') - cp += 2; - - while (isxdigit(*cp)) { - unsigned int value; - - value = isdigit(*cp) ? *cp - '0' : _tolower(*cp) - 'a' + 10; - if (value >= base) - break; - result = result * base + value; - cp++; - } if (endp) *endp = (char *)cp; |