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Diffstat (limited to 'gas/doc/as.texinfo')
| -rw-r--r-- | gas/doc/as.texinfo | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index 92b4cde..c0aef5c 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -4230,6 +4230,17 @@ Allows the user to add arbitrary bytes to the unwind info. One might use this to add OS-specific CFI opcodes, or generic CFI opcodes that GAS does not yet support. +@section @code{.cfi_val_encoded_addr @var{register}, @var{encoding}, @var{label}} +The current value of @var{register} is @var{label}. The value of @var{label} +will be encoded in the output file according to @var{encoding}; see the +description of @code{.cfi_personality} for details on this encoding. + +The usefulness of equating a register to a fixed label is probably +limited to the return address register. Here, it can be useful to +mark a code segment that has only one return address which is reached +by a direct branch and no copy of the return address exists in memory +or another register. + @node LNS directives @section @code{.file @var{fileno} @var{filename}} @cindex @code{file} directive |