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Diffstat (limited to 'gdb/doc/gdbint.texinfo')
| -rw-r--r-- | gdb/doc/gdbint.texinfo | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gdb/doc/gdbint.texinfo b/gdb/doc/gdbint.texinfo index 00c6283..30f3018 100644 --- a/gdb/doc/gdbint.texinfo +++ b/gdb/doc/gdbint.texinfo @@ -3229,6 +3229,24 @@ the direction of stack growth. By default, no frame based stack alignment is performed. +@item int frame_red_zone_size + +The number of bytes, beyond the innermost-stack-address, reserved by the +@sc{abi}. A function is permitted to use this scratch area (instead of +allocating extra stack space). + +When performing an inferior function call, to ensure that it does not +modify this area, @value{GDBN} adjusts the innermost-stack-address by +@var{frame_red_zone_size} bytes before pushing parameters onto the +stack. + +By default, zero bytes are allocated. The value must be aligned +(@pxref{frame_align}). + +The @sc{amd64} (nee x86-64) @sc{abi} documentation refers to the +@emph{red zone} when describing this scratch area. +@cindex red zone + @item DEPRECATED_FRAME_CHAIN(@var{frame}) @findex DEPRECATED_FRAME_CHAIN Given @var{frame}, return a pointer to the calling frame. |