/* ===-- assembly.h - libUnwind assembler support macros -------------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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* ===----------------------------------------------------------------------===
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*
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* This file defines macros for use in libUnwind assembler source.
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* This file is not part of the interface of this library.
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*
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* ===----------------------------------------------------------------------===
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*/
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#ifndef UNWIND_ASSEMBLY_H
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#define UNWIND_ASSEMBLY_H
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#if defined(__powerpc64__)
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#define SEPARATOR ;
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#define PPC64_OFFS_SRR0 0
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#define PPC64_OFFS_CR 272
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#define PPC64_OFFS_XER 280
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#define PPC64_OFFS_LR 288
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#define PPC64_OFFS_CTR 296
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#define PPC64_OFFS_VRSAVE 304
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#define PPC64_OFFS_FP 312
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#define PPC64_OFFS_V 824
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#ifdef _ARCH_PWR8
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#define PPC64_HAS_VMX
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#endif
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#elif defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__)
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#define SEPARATOR @
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#elif defined(__arm64__)
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#define SEPARATOR %%
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#else
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#define SEPARATOR ;
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#endif
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#define GLUE2(a, b) a ## b
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#define GLUE(a, b) GLUE2(a, b)
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#define SYMBOL_NAME(name) GLUE(__USER_LABEL_PREFIX__, name)
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#if defined(__APPLE__)
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#define SYMBOL_IS_FUNC(name)
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#define EXPORT_SYMBOL(name)
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#define HIDDEN_SYMBOL(name) .private_extern name
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#define NO_EXEC_STACK_DIRECTIVE
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#elif defined(__ELF__)
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#if defined(__arm__)
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#define SYMBOL_IS_FUNC(name) .type name,%function
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#else
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#define SYMBOL_IS_FUNC(name) .type name,@function
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#endif
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#define EXPORT_SYMBOL(name)
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#define HIDDEN_SYMBOL(name) .hidden name
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#if defined(__GNU__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \
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defined(__linux__)
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#define NO_EXEC_STACK_DIRECTIVE .section .note.GNU-stack,"",%progbits
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#else
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#define NO_EXEC_STACK_DIRECTIVE
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#endif
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#elif defined(_WIN32)
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#define SYMBOL_IS_FUNC(name) \
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.def name SEPARATOR \
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.scl 2 SEPARATOR \
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.type 32 SEPARATOR \
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.endef
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#define EXPORT_SYMBOL2(name) \
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.section .drectve,"yn" SEPARATOR \
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.ascii "-export:", #name, "\0" SEPARATOR \
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.text
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#if defined(_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS)
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#define EXPORT_SYMBOL(name)
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#else
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#define EXPORT_SYMBOL(name) EXPORT_SYMBOL2(name)
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#endif
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#define HIDDEN_SYMBOL(name)
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#define NO_EXEC_STACK_DIRECTIVE
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#elif defined(__sparc__)
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#else
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#error Unsupported target
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#endif
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#define DEFINE_LIBUNWIND_FUNCTION(name) \
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.globl SYMBOL_NAME(name) SEPARATOR \
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EXPORT_SYMBOL(name) SEPARATOR \
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SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \
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SYMBOL_NAME(name):
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#define DEFINE_LIBUNWIND_PRIVATE_FUNCTION(name) \
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.globl SYMBOL_NAME(name) SEPARATOR \
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HIDDEN_SYMBOL(SYMBOL_NAME(name)) SEPARATOR \
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SYMBOL_IS_FUNC(SYMBOL_NAME(name)) SEPARATOR \
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SYMBOL_NAME(name):
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#if defined(__arm__)
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#if !defined(__ARM_ARCH)
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#define __ARM_ARCH 4
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#endif
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#if defined(__ARM_ARCH_4T__) || __ARM_ARCH >= 5
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#define ARM_HAS_BX
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#endif
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#ifdef ARM_HAS_BX
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#define JMP(r) bx r
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#else
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#define JMP(r) mov pc, r
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#endif
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#endif /* __arm__ */
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#endif /* UNWIND_ASSEMBLY_H */
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