From: Gabe Black <gblack@eecs.umich.edu>
Date: Mon, 12 Nov 2007 01:23:22 +0000 (-0800)
Subject: SPARC: Force %g1 to be zero on process startup even though it normally already should be.
X-Git-Tag: m5_2.0_beta5~84^2~19
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ada071db53208bf02afee79390d1169130ce99ed;p=gem5.git

SPARC: Force %g1 to be zero on process startup even though it normally already should be.

--HG--
extra : convert_revision : 9feb63109e8c955b49c7e96acad1ad7c29a4349f
---

diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc
index 1f5d0b077..0c40fe58d 100644
--- a/src/arch/sparc/process.cc
+++ b/src/arch/sparc/process.cc
@@ -429,6 +429,10 @@ Sparc64LiveProcess::argsInit(int intSize, int pageSize)
     threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base);
     threadContexts[0]->setIntReg(StackPointerReg, stack_min - StackBias);
 
+    // %g1 is a pointer to a function that should be run at exit. Since we
+    // don't have anything like that, it should be set to 0.
+    threadContexts[0]->setIntReg(1, 0);
+
     Addr prog_entry = objFile->entryPoint();
     threadContexts[0]->setPC(prog_entry);
     threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));
@@ -658,6 +662,10 @@ Sparc32LiveProcess::argsInit(int intSize, int pageSize)
     //threadContexts[0]->setIntReg(ArgumentReg[1], argv_array_base);
     threadContexts[0]->setIntReg(StackPointerReg, stack_min);
 
+    // %g1 is a pointer to a function that should be run at exit. Since we
+    // don't have anything like that, it should be set to 0.
+    threadContexts[0]->setIntReg(1, 0);
+
     uint32_t prog_entry = objFile->entryPoint();
     threadContexts[0]->setPC(prog_entry);
     threadContexts[0]->setNextPC(prog_entry + sizeof(MachInst));