diff options
Diffstat (limited to 'compiler-rt/lib/arm/bswapdi2.S')
| -rw-r--r-- | compiler-rt/lib/arm/bswapdi2.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/compiler-rt/lib/arm/bswapdi2.S b/compiler-rt/lib/arm/bswapdi2.S new file mode 100644 index 00000000000..7e1aeb177ec --- /dev/null +++ b/compiler-rt/lib/arm/bswapdi2.S @@ -0,0 +1,22 @@ +//===------- bswapdi2 - Implement bswapdi2 ---------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + + +// +// extern uint64_t __bswapdi2(uint64_t); +// +// Reverse all the bytes in a 64-bit integer. +// + .globl ___bswapdi2 +___bswapdi2: + rev r2, r1 // reverse bytes in high 32-bits into temp2 + rev r3, r0 // reverse bytes in low 32-bit into temp3 + mov r0, r2 // set low 32-bits of result to temp2 + mov r1, r3 // set high 32-bits of result to temp3 + bx lr |
