From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 8 Nov 2006 05:32:04 +0000 (-0500)
Subject: Replaced getArg with a SPARC implementation.
X-Git-Tag: m5_2.0_beta2~53^2~18
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=746ceb93fdb13f74ea2e18f980d122f8bfb5cd0a;p=gem5.git

Replaced getArg with a SPARC implementation.

--HG--
extra : convert_revision : ba31171a81b6c46de2997de2701d35fcf8c614b7
---

diff --git a/src/arch/sparc/arguments.cc b/src/arch/sparc/arguments.cc
index a0a31567e..44adf4a15 100644
--- a/src/arch/sparc/arguments.cc
+++ b/src/arch/sparc/arguments.cc
@@ -54,16 +54,18 @@ Arguments::Data::alloc(size_t size)
 uint64_t
 Arguments::getArg(bool fp)
 {
-    //XXX This needs to be replaced with the sparc version
+    //The caller uses %o0-%05 for the first 6 arguments even if their floating
+    //point. Double precision floating point values take two registers/args.
+    //Quads, structs, and unions are passed as pointers. All arguments beyond
+    //the sixth are passed on the stack past the 16 word window save area,
+    //space for the struct/union return pointer, and space reserved for the
+    //first 6 arguments which the caller may use but doesn't have to.
     if (number < 6) {
-        if (fp)
-            return tc->readFloatRegBits(16 + number);
-        else
-            return tc->readIntReg(16 + number);
+        return tc->readIntReg(8 + number);
     } else {
-        Addr sp = tc->readIntReg(30);
+        Addr sp = tc->readIntReg(14);
         VirtualPort *vp = tc->getVirtPort(tc);
-        uint64_t arg = vp->read<uint64_t>(sp + (number-6) * sizeof(uint64_t));
+        uint64_t arg = vp->read<uint64_t>(sp + 92 + (number-6) * sizeof(uint64_t));
         tc->delVirtPort(vp);
         return arg;
     }
diff --git a/src/arch/sparc/arguments.hh b/src/arch/sparc/arguments.hh
index 0d059a564..8f925dd25 100644
--- a/src/arch/sparc/arguments.hh
+++ b/src/arch/sparc/arguments.hh
@@ -144,6 +144,6 @@ class Arguments
     }
 };
 
-}; // namespace AlphaISA
+}; // namespace SparcISA
 
-#endif // __ARCH_ALPHA_ARGUMENTS_HH__
+#endif // __ARCH_SPARC_ARGUMENTS_HH__