From 208e52d998378776d5dd365e3e9d7b058325516b Mon Sep 17 00:00:00 2001 From: Jason Merrill Date: Mon, 27 Mar 2000 00:58:16 -0500 Subject: [PATCH] tweak ARG_POINTER_CFA_OFFSET docs From-SVN: r32760 --- gcc/tm.texi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/gcc/tm.texi b/gcc/tm.texi index 1a1396f91a8..803e014dc3d 100644 --- a/gcc/tm.texi +++ b/gcc/tm.texi @@ -2316,9 +2316,11 @@ during virtual register instantiation. The default value for this macro is @code{FIRST_PARM_OFFSET (fundecl)}, which is correct for most machines; in general, the arguments are found -immediately before the stack frame. See @file{function.c} for details. +immediately before the stack frame. Note that this is not the case on +some targets that save registers into the caller's frame, such as SPARC +and rs6000, and so such targets need to define this macro. -You only need to define this macro if this default is incorrect, and you +You only need to define this macro if the default is incorrect, and you want to support call frame debugging information like that provided by DWARF 2.