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aarch64, Darwin, libgcc: Add support for aarch64 darwin.
1. libgcc, aarch64, Darwin: Initial libgcc boiler-plate changes. Initial changes to build libgcc for aarch64 Darwin (declare the port, handle Mach-O assembler syntax and arrange for building the main extra pieces). 2. libgcc, aarch64, Darwin: Do not build legacy EH shim. Darwin aarch64 does not exist for macOS 10.6, so there is no need to build a shim to target it. Signed-off-by: Iain Sandoe <iain@sandoe.co.uk> libgcc/ * config.host: Omit the Darwin10 unwinder shim for aarch64 Darwin. 3. libgcc, aarch64, Darwin: Darwin should use an OS call to clear caches. The sys_icache_invalidate() function is the right one to use. The fixes issue #17 4. libgcc, aarch64, Darwin: Enable heap trampolines.
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# FIXME: decide what we need here, or delete this file. | ||
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HOST_LIBGCC2_CFLAGS += -mmacosx-version-min=11.0 | ||
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LIB2_SIDITI_CONV_FUNCS = yes | ||
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BUILD_LIBGCCS1 = |