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Diffstat (limited to 'llvm/docs/ExceptionHandling.rst')
| -rw-r--r-- | llvm/docs/ExceptionHandling.rst | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/llvm/docs/ExceptionHandling.rst b/llvm/docs/ExceptionHandling.rst index c2afb25c6ccd..bb72e5a71a77 100644 --- a/llvm/docs/ExceptionHandling.rst +++ b/llvm/docs/ExceptionHandling.rst @@ -374,10 +374,12 @@ overall functioning of this intrinsic is compatible with the GCC to interoperate. The single parameter is a pointer to a five word buffer in which the calling -context is saved. The front end places the frame pointer in the first word, and -the target implementation of this intrinsic should place the destination address -for a `llvm.eh.sjlj.longjmp`_ in the second word. The following three words are -available for use in a target-specific manner. +context is saved. The format and contents of the buffer are target-specific. +On certain targets (ARM, PowerPC, VE, X86), the front end places the +frame pointer in the first word and the stack pointer in the third word, +while the target implementation of this intrinsic fills in the remaining +words. On other targets (SystemZ), saving the calling context to the buffer +is left completely to the target implementation. .. _llvm.eh.sjlj.longjmp: |