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ef8821e5db
It seems there have only been a small amount to the compiler-rt source code in the mean time. I'd rather have the code in sync as much as possible by the time we release 9.0. Changes: - The libcompiler_rt library is now dual licensed under both the University of Illinois "BSD-Like" license and the MIT license. - Our local modifications for using .hidden instead of .private_extern have been upstreamed, meaning our changes to lib/assembly.h can now be reverted. - A possible endless recursion in __modsi3() has been fixed. - Support for ARM EABI has been added, but it has no effect on FreeBSD (yet). - The functions __udivmodsi4 and __divmodsi4 have been added. Requested by: many, including bf@ and Pedro Giffuni
34 lines
899 B
ArmAsm
34 lines
899 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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.align 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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// 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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