310874ae3c
The .align statements in ARM assembly routines is actually meant to be a power of 2 alignment (e.g. .align 2 == 4 byte alignment, not 2). Switch to using .p2align. .p2align is guaranteed to be a power-of-two alignment always and much more explicit. The .align in the case of x86_64 is byte alignment, use .balign instead of .align. llvm-svn: 208578
36 lines
945 B
ArmAsm
36 lines
945 B
ArmAsm
//===-- sync_synchronize - Implement memory barrier * ----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "../assembly.h"
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//
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// When compiling a use of the gcc built-in __sync_synchronize() in thumb1 mode
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// the compiler may emit a call to __sync_synchronize.
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// On Darwin the implementation jumps to an OS supplied function named
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// OSMemoryBarrier
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//
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.text
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.syntax unified
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#if __APPLE__
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.p2align 2
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DEFINE_COMPILERRT_PRIVATE_FUNCTION(__sync_synchronize)
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stmfd sp!, {r7, lr}
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add r7, sp, #0
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bl _OSMemoryBarrier
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ldmfd sp!, {r7, pc}
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END_COMPILERRT_FUNCTION(__sync_synchronize)
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// tell linker it can break up file at label boundaries
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.subsections_via_symbols
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#endif
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