forked from OSchip/llvm-project
23 lines
696 B
ArmAsm
23 lines
696 B
ArmAsm
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//===------- bswapdi2 - Implement bswapdi2 ---------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// extern uint64_t __bswapdi2(uint64_t);
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//
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// Reverse all the bytes in a 64-bit integer.
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//
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.globl ___bswapdi2
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___bswapdi2:
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rev r2, r1 // reverse bytes in high 32-bits into temp2
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rev r3, r0 // reverse bytes in low 32-bit into temp3
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mov r0, r2 // set low 32-bits of result to temp2
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mov r1, r3 // set high 32-bits of result to temp3
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bx lr
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