From 518b5e5b1c71259ce0badc29f98db46a73c59442 Mon Sep 17 00:00:00 2001
From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Fri, 1 Oct 2010 16:02:46 -0500
Subject: Debug: Implement getArgument() and function skipping for ARM.

In the process make add skipFuction() to handle isa specific function skipping
instead of ifdefs and other ugliness. For almost all ABIs, 64 bit arguments can
only start in even registers.  Size is now passed to getArgument() so that 32
bit systems can make decisions about register selection for 64 bit arguments.
The number argument is now passed by reference because getArgument() will need
to change it based on the size of the argument and the current argument number.

For ARM, if the argument number is odd and a 64-bit register is requested the
number must first be incremented to because all 64 bit arguments are passed
in an even argument register. Then the number will be incremented again to
access both halves of the argument.
---
 src/arch/alpha/utility.cc | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'src/arch/alpha/utility.cc')

diff --git a/src/arch/alpha/utility.cc b/src/arch/alpha/utility.cc
index 0d865e520..80ec360b7 100644
--- a/src/arch/alpha/utility.cc
+++ b/src/arch/alpha/utility.cc
@@ -40,7 +40,7 @@
 namespace AlphaISA {
 
 uint64_t
-getArgument(ThreadContext *tc, int number, bool fp)
+getArgument(ThreadContext *tc, int &number, uint8_t size, bool fp)
 {
 #if FULL_SYSTEM
     const int NumArgumentRegs = 6;
@@ -96,5 +96,14 @@ copyMiscRegs(ThreadContext *src, ThreadContext *dest)
     copyIprs(src, dest);
 }
 
+void
+skipFunction(ThreadContext *tc)
+{
+    Addr newpc = tc->readIntReg(ReturnAddressReg);
+    tc->setPC(newpc);
+    tc->setNextPC(tc->readPC() + sizeof(TheISA::MachInst));
+}
+
+
 } // namespace AlphaISA
 
-- 
cgit v1.2.3