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-rw-r--r--src/arch/x86/isa/insts/system/segmentation.py57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/arch/x86/isa/insts/system/segmentation.py b/src/arch/x86/isa/insts/system/segmentation.py
index 6067f64a0..e46941e53 100644
--- a/src/arch/x86/isa/insts/system/segmentation.py
+++ b/src/arch/x86/isa/insts/system/segmentation.py
@@ -110,4 +110,61 @@ def macroop LGDT_16_P
wrbase gdtr, t2
wrlimit gdtr, t1
};
+
+def macroop LIDT_M
+{
+ .adjust_env oszForPseudoDesc
+
+ # Get the limit
+ ld t1, seg, sib, disp, dataSize=2
+ # Get the base
+ ld t2, seg, sib, 'adjustedDisp + 2'
+ wrbase idtr, t2
+ wrlimit idtr, t1
+};
+
+def macroop LIDT_P
+{
+ .adjust_env oszForPseudoDesc
+
+ rdip t7
+ # Get the limit
+ ld t1, seg, riprel, disp, dataSize=2
+ # Get the base
+ ld t2, seg, riprel, 'adjustedDisp + 2'
+ wrbase idtr, t2
+ wrlimit idtr, t1
+};
+
+#
+# These versions are for when the original data size was 16 bits. The base is
+# still 32 bits, but the top byte is zeroed before being used.
+#
+
+def macroop LIDT_16_M
+{
+ .adjust_env oszForPseudoDesc
+
+ # Get the limit
+ ld t1, seg, sib, disp, dataSize=2
+ # Get the base
+ ld t2, seg, sib, 'adjustedDisp + 2', dataSize=4
+ zexti t2, t2, 23
+ wrbase idtr, t2
+ wrlimit idtr, t1
+};
+
+def macroop LIDT_16_P
+{
+ .adjust_env oszForPseudoDesc
+
+ rdip t7
+ # Get the limit
+ ld t1, seg, riprel, disp, dataSize=2
+ # Get the base
+ ld t2, seg, riprel, 'adjustedDisp + 2', dataSize=4
+ zexti t2, t2, 23
+ wrbase idtr, t2
+ wrlimit idtr, t1
+};
'''