From: Mikulas Patocka <mpatocka@xxxxxxxxxx> Date: Thu, 19 Jun 2008 01:17:39 -0400 (EDT) > I see ... the callee writes arguments into caller's stack frame, if it has > variable number of arguments. That it misdesign, the callee should write > registers arguments into it's own frame like on AMD64 (then this space > would be allocated only if needed). The callee can do this even for non-variable argument lists. It's like a set of pre-allocated stack slots for those incoming argument registers when reloading under register pressure. In my opinion it is better to put this onus on the callee because only the callee knows if it needs to pop these values onto the stack to alleviate register pressure. I think it might be possible for the compiler to only use 176 bytes. I'll take a look at the gcc sparc backend and the ABI specification to see if this is the case. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
