Xiaoyu Lu 0a957ae73a Add uefi arch x86 probestack support ... 1. In UEFI x86 arch, probestack need triple underscore. 2. In UEFI, probestack function do things like _chkstk(in MSVC). MSVC x32's _chkstk and cygwin/mingw's _alloca adjust %esp themselves MSVC x64's __chkstk and cygwin/mingw's ___chkstk_ms do not adjust %rsp themselves. But current probestack doesn't adjust esp. And LLVM doesn't generate sub %eax, %esp after probestack. So we adjust esp in probestack like MSVC x32's _chkstk.		2020-08-14 16:26:37 +08:00
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compiler-builtins	Add uefi arch x86 probestack support	2020-08-14 16:26:37 +08:00