diff options
Diffstat (limited to 'lib/builtins')
-rw-r--r-- | lib/builtins/CMakeLists.txt | 2 | ||||
-rw-r--r-- | lib/builtins/README.txt | 4 | ||||
-rw-r--r-- | lib/builtins/bswapdi2.c | 27 | ||||
-rw-r--r-- | lib/builtins/bswapsi2.c | 23 |
4 files changed, 54 insertions, 2 deletions
diff --git a/lib/builtins/CMakeLists.txt b/lib/builtins/CMakeLists.txt index 02c5b48dd..6556e7ac6 100644 --- a/lib/builtins/CMakeLists.txt +++ b/lib/builtins/CMakeLists.txt @@ -42,6 +42,8 @@ set(GENERIC_SOURCES ashlti3.c ashrdi3.c ashrti3.c + bswapdi2.c + bswapsi2.c clear_cache.c clzdi2.c clzsi2.c diff --git a/lib/builtins/README.txt b/lib/builtins/README.txt index b3d083614..e603dfa05 100644 --- a/lib/builtins/README.txt +++ b/lib/builtins/README.txt @@ -57,8 +57,8 @@ si_int __popcountsi2(si_int a); // bit population si_int __popcountdi2(di_int a); // bit population si_int __popcountti2(ti_int a); // bit population -uint32_t __bswapsi2(uint32_t a); // a byteswapped, arm only -uint64_t __bswapdi2(uint64_t a); // a byteswapped, arm only +uint32_t __bswapsi2(uint32_t a); // a byteswapped +uint64_t __bswapdi2(uint64_t a); // a byteswapped // Integral arithmetic diff --git a/lib/builtins/bswapdi2.c b/lib/builtins/bswapdi2.c new file mode 100644 index 000000000..eb220007b --- /dev/null +++ b/lib/builtins/bswapdi2.c @@ -0,0 +1,27 @@ +/* ===-- bswapdi2.c - Implement __bswapdi2 ---------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is dual licensed under the MIT and the University of Illinois Open + * Source Licenses. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __bswapdi2 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" + +COMPILER_RT_ABI uint64_t __bswapdi2(uint64_t u) { + return ( + (((u)&0xff00000000000000ULL) >> 56) | + (((u)&0x00ff000000000000ULL) >> 40) | + (((u)&0x0000ff0000000000ULL) >> 24) | + (((u)&0x000000ff00000000ULL) >> 8) | + (((u)&0x00000000ff000000ULL) << 8) | + (((u)&0x0000000000ff0000ULL) << 24) | + (((u)&0x000000000000ff00ULL) << 40) | + (((u)&0x00000000000000ffULL) << 56)); +} diff --git a/lib/builtins/bswapsi2.c b/lib/builtins/bswapsi2.c new file mode 100644 index 000000000..5d941e69f --- /dev/null +++ b/lib/builtins/bswapsi2.c @@ -0,0 +1,23 @@ +/* ===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is dual licensed under the MIT and the University of Illinois Open + * Source Licenses. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __bswapsi2 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" + +COMPILER_RT_ABI uint32_t __bswapsi2(uint32_t u) { + return ( + (((u)&0xff000000) >> 24) | + (((u)&0x00ff0000) >> 8) | + (((u)&0x0000ff00) << 8) | + (((u)&0x000000ff) << 24)); +} |