From 57b9f53afa5660152a77b7f3b7affb39f5b0e176 Mon Sep 17 00:00:00 2001
From: Steve Reinhardt <steve.reinhardt@amd.com>
Date: Tue, 6 Oct 2015 17:26:50 -0700
Subject: x86: implement fild, fucomi, and fucomip x87 insts

fild loads an integer value into the x87 top of stack register.
fucomi/fucomip compare two x87 register values (the latter
also doing a stack pop).
These instructions are used by some versions of GNU libstdc++.
---
 .../floating_point_unordered_compare.py                 | 16 ++++++++++++++--
 .../convert_and_load_or_store_integer.py                | 17 ++++++++++++++++-
 2 files changed, 30 insertions(+), 3 deletions(-)

(limited to 'src/arch/x86/isa/insts')

diff --git a/src/arch/x86/isa/insts/x87/compare_and_test/floating_point_unordered_compare.py b/src/arch/x86/isa/insts/x87/compare_and_test/floating_point_unordered_compare.py
index 8cca0582b..7007c2d74 100644
--- a/src/arch/x86/isa/insts/x87/compare_and_test/floating_point_unordered_compare.py
+++ b/src/arch/x86/isa/insts/x87/compare_and_test/floating_point_unordered_compare.py
@@ -1,4 +1,6 @@
 # Copyright (c) 2007 The Hewlett-Packard Development Company
+# Copyright (c) 2015 Advanced Micro Devices, Inc.
+#
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -34,11 +36,21 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 # Authors: Gabe Black
+#          Steve Reinhardt
 
 microcode = '''
 # FUCOM
 # FUCOMP
 # FUCOMPP
-# FUCOMI
-# FUCOMIP
+
+# fucomi
+def macroop FUCOMI_R {
+    compfp st(0), sti
+};
+
+# fucomi with stack pop (caused by spm=1)
+def macroop FUCOMIP_R {
+    compfp st(0), sti, spm=1
+};
+
 '''
diff --git a/src/arch/x86/isa/insts/x87/data_transfer_and_conversion/convert_and_load_or_store_integer.py b/src/arch/x86/isa/insts/x87/data_transfer_and_conversion/convert_and_load_or_store_integer.py
index 38f179d74..9bf4ec614 100644
--- a/src/arch/x86/isa/insts/x87/data_transfer_and_conversion/convert_and_load_or_store_integer.py
+++ b/src/arch/x86/isa/insts/x87/data_transfer_and_conversion/convert_and_load_or_store_integer.py
@@ -1,4 +1,6 @@
 # Copyright (c) 2007 The Hewlett-Packard Development Company
+# Copyright (c) 2015 Advanced Micro Devices, Inc.
+#
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -34,9 +36,22 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 # Authors: Gabe Black
+#          Steve Reinhardt
 
 microcode = '''
-# FILD
+# fild common case
+def macroop FILD_M {
+    ldifp87 ufp1, seg, sib, disp
+    movfp st(-1), ufp1, spm=-1
+};
+
+# fild with RIP-relative addressing
+def macroop FILD_P {
+    rdip t7
+    ldifp87 ufp1, seg, riprel, disp
+    movfp st(-1), ufp1, spm=-1
+};
+
 # FIST
 # FISTP
 # FISTTP
-- 
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