changeset de112a8ac3d8 in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=de112a8ac3d8
description:
X86: Fix the decoding for and fill out FST and FSTP.
diffstat:
2 files changed, 10 insertions(+), 2 deletions(-)
src/arch/x86/isa/decoder/x87.isa
| 4 ++--
src/arch/x86/isa/insts/x87/data_transfer_and_conversion/load_or_store_floating_point.py
| 8 ++++++++
diffs (39 lines):
diff -r 2cd3ce4fa03f -r de112a8ac3d8 src/arch/x86/isa/decoder/x87.isa
--- a/src/arch/x86/isa/decoder/x87.isa Thu Aug 20 00:41:27 2009 -0700
+++ b/src/arch/x86/isa/decoder/x87.isa Thu Aug 20 00:42:14 2009 -0700
@@ -249,8 +249,8 @@
0x3: Inst::UD2();
default: fisttp();
}
- 0x2: Inst::FST(Mq);
- 0x3: Inst::FSTP(Mq);
+ 0x2: Inst::FST(Eq);
+ 0x3: Inst::FSTP(Eq);
0x4: decode MODRM_MOD {
0x3: fucom();
default: frstor();
diff -r 2cd3ce4fa03f -r de112a8ac3d8
src/arch/x86/isa/insts/x87/data_transfer_and_conversion/load_or_store_floating_point.py
---
a/src/arch/x86/isa/insts/x87/data_transfer_and_conversion/load_or_store_floating_point.py
Thu Aug 20 00:41:27 2009 -0700
+++
b/src/arch/x86/isa/insts/x87/data_transfer_and_conversion/load_or_store_floating_point.py
Thu Aug 20 00:42:14 2009 -0700
@@ -65,6 +65,10 @@
movfp st(-1), ufp1, spm=-1
};
+def macroop FST_R {
+ movfp sti, st(0)
+};
+
def macroop FST_M {
stfp st(0), seg, sib, disp
};
@@ -74,6 +78,10 @@
stfp st(0), seg, riprel, disp
};
+def macroop FSTP_R {
+ movfp sti, st(0), spm=1
+};
+
def macroop FSTP_M {
movfp ufp1, st(0), spm=1
stfp ufp1, seg, sib, disp
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