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Add an option to disable use of tagged pointers

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This commit is contained in:
Jonathan G Rennison
2024-02-27 20:17:18 +00:00
parent 7e0acd686e
commit cd40eba453
2 changed files with 5 additions and 1 deletions
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4
CMakeLists.txt
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@@ -536,6 +536,10 @@ if(CMAKE_SIZEOF_VOID_P EQUAL 8)
add_definitions(-DPOINTER_IS_64BIT) add_definitions(-DPOINTER_IS_64BIT)
endif() endif()
if(OPTION_NO_TAGGED_PTRS)
add_definitions(-DNO_TAGGED_PTRS)
endif()
enable_testing() enable_testing()
add_subdirectory(regression) add_subdirectory(regression)

2
src/core/endian_type.hpp
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@@ -27,7 +27,7 @@
# error "TTD_ENDIAN is not defined; please set it to either TTD_LITTLE_ENDIAN or TTD_BIG_ENDIAN" # error "TTD_ENDIAN is not defined; please set it to either TTD_LITTLE_ENDIAN or TTD_BIG_ENDIAN"
#endif /* !TTD_ENDIAN */ #endif /* !TTD_ENDIAN */
#if defined(__x86_64__) || defined(_M_X64) || defined(__aarch64__) || defined(_M_ARM64) #if !defined(NO_TAGGED_PTRS) && (defined(__x86_64__) || defined(_M_X64) || defined(__aarch64__) || defined(_M_ARM64))
/** Tagged pointers (upper bits) may be used on this architecture */ /** Tagged pointers (upper bits) may be used on this architecture */
# define OTTD_UPPER_TAGGED_PTR 1 # define OTTD_UPPER_TAGGED_PTR 1
#else #else