*: deinline SWAP_xE64 on 32-bit CPUs. Wins !90 bytes both on 32 and 64 bits
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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 @@
#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)