e58bb5dc4e
Summary: The `b` instruction in Thumb1 has limited range, which may cause link-time errors if the jump target is far away. This patch guards the tailcalls for non-Thumb1 Reviewers: peter.smith, compnerd, rengolin, eli.friedman Reviewed By: rengolin Subscribers: joerg, dalias, javed.absar, llvm-commits Differential Revision: https://reviews.llvm.org/D39700 llvm-svn: 317814
31 lines
870 B
ArmAsm
31 lines
870 B
ArmAsm
//===-- aeabi_memcmp.S - EABI memcmp implementation -----------------------===//
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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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// void __aeabi_memcmp(void *dest, void *src, size_t n) { memcmp(dest, src, n); }
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.syntax unified
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.p2align 2
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DEFINE_COMPILERRT_FUNCTION(__aeabi_memcmp)
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#ifdef USE_THUMB_1
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push {r7, lr}
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bl memcmp
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pop {r7, pc}
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#else
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b memcmp
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#endif
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END_COMPILERRT_FUNCTION(__aeabi_memcmp)
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DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memcmp4, __aeabi_memcmp)
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DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memcmp8, __aeabi_memcmp)
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NO_EXEC_STACK_DIRECTIVE
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