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| author | David Majnemer <david.majnemer@gmail.com> | 2015-01-29 09:29:21 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-01-29 09:29:21 +0000 |
| commit | 0aaadda8e18ef6cf8fd65fad649f5a21b4070c3c (patch) | |
| tree | 6c440f0b6f08c26b77a750cf0eeb2f80ad198cdb /lib/Format/WhitespaceManager.cpp | |
| parent | 346f5236b2f1b85c05b4e6ef15d460a564ef2fee (diff) | |
MS ABI: Implement proper support for setjmp
On targets which use the MSVCRT, setjmp is a macro which expands to
_setjmp or _setjmpex.
_setjmp and _setjmpex have a secret, hidden argument which is not listed
in the function prototype on X64 and WoA. This hidden argument always
seems to be the frame pointer.
_setjmpex isn't used on X86, _setjmp is magically replaced with a call
to _setjmp3. The second argument is zero for 'normal' setjmp/longjmp
pairs, otherwise it is a count of additional variadic arguments. This
is used when setjmp appears inside of a try or __try.
It is not safe to use a pointer to setjmp because _setjmp, _setjmpex and
_setmp3 are not compatible with setjmp.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@227426 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Format/WhitespaceManager.cpp')
0 files changed, 0 insertions, 0 deletions