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| author | Denys Vlasenko | 2010-10-18 11:40:26 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2010-10-18 11:40:26 +0200 |
| commit | 9ff50b869780aba131dc9b542ccd0f1a3959e920 (patch) | |
| tree | a1f65f2a5f8c3aa1d6f51bc15c734f2b3ae46ead /include | |
| parent | b102e12253078e8c0ebdeeb5e1893ea6a025a700 (diff) | |
| download | busybox-9ff50b869780aba131dc9b542ccd0f1a3959e920.zip busybox-9ff50b869780aba131dc9b542ccd0f1a3959e920.tar.gz | |
*: deinline SWAP_xE64 on 32-bit CPUs. Wins !90 bytes both on 32 and 64 bits
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/libbb.h | 7 | ||||
| -rw-r--r-- | include/platform.h | 9 |
2 files changed, 12 insertions, 4 deletions
diff --git a/include/libbb.h b/include/libbb.h index b16157d..c161ed7 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -37,8 +37,6 @@ #include <termios.h> #include <time.h> #include <unistd.h> -/* Try to pull in PATH_MAX */ -#include <limits.h> #include <sys/param.h> #ifdef HAVE_MNTENT_H # include <mntent.h> @@ -254,6 +252,11 @@ extern int *const bb_errno; #define errno (*bb_errno) #endif +#if !(ULONG_MAX > 0xffffffff) +/* Only 32-bit CPUs need this, 64-bit ones use inlined version */ +uint64_t bb_bswap_64(uint64_t x) FAST_FUNC; +#endif + unsigned long long monotonic_ns(void) FAST_FUNC; unsigned long long monotonic_us(void) FAST_FUNC; unsigned long long monotonic_ms(void) FAST_FUNC; diff --git a/include/platform.h b/include/platform.h index c255a17..b5c6685 100644 --- a/include/platform.h +++ b/include/platform.h @@ -150,6 +150,7 @@ /* ---- Endian Detection ------------------------------------ */ +#include <limits.h> #if defined(__digital__) && defined(__unix__) # include <sex.h> #elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \ @@ -189,6 +190,10 @@ # error "Can't determine endianness" #endif +#if ULONG_MAX > 0xffffffff +# define bb_bswap_64(x) bswap_64(x) +#endif + /* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */ #if BB_BIG_ENDIAN # define SWAP_BE16(x) (x) @@ -196,13 +201,13 @@ # define SWAP_BE64(x) (x) # define SWAP_LE16(x) bswap_16(x) # define SWAP_LE32(x) bswap_32(x) -# define SWAP_LE64(x) bswap_64(x) +# define SWAP_LE64(x) bb_bswap_64(x) # define IF_BIG_ENDIAN(...) __VA_ARGS__ # define IF_LITTLE_ENDIAN(...) #else # define SWAP_BE16(x) bswap_16(x) # define SWAP_BE32(x) bswap_32(x) -# define SWAP_BE64(x) bswap_64(x) +# define SWAP_BE64(x) bb_bswap_64(x) # define SWAP_LE16(x) (x) # define SWAP_LE32(x) (x) # define SWAP_LE64(x) (x) |