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-rw-r--r--src/arch/x86/isa/decoder/one_byte_opcodes.isa2
-rw-r--r--src/arch/x86/isa/insts/arithmetic/add_and_subtract.py23
2 files changed, 24 insertions, 1 deletions
diff --git a/src/arch/x86/isa/decoder/one_byte_opcodes.isa b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
index 6c54f77bc..82e50e745 100644
--- a/src/arch/x86/isa/decoder/one_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
@@ -297,7 +297,7 @@
}
//0x3: group1_Ev_Ib();
0x3: decode MODRM_REG {
- 0x0: add_Ev_Ib();
+ 0x0: Inst::ADD(Ev,Ib);
0x1: or_Ev_Ib();
0x2: adc_Ev_Ib();
0x3: sbb_Ev_Ib();
diff --git a/src/arch/x86/isa/insts/arithmetic/add_and_subtract.py b/src/arch/x86/isa/insts/arithmetic/add_and_subtract.py
index fbfe4be7e..4d6e40c74 100644
--- a/src/arch/x86/isa/insts/arithmetic/add_and_subtract.py
+++ b/src/arch/x86/isa/insts/arithmetic/add_and_subtract.py
@@ -54,6 +54,29 @@
# Authors: Gabe Black
microcode = '''
+def macroop ADD_R_I
+{
+ limm t1, imm
+ add reg, reg, t1
+};
+
+def macroop ADD_M_I
+{
+ limm t2, imm
+ ld t1, ds, [scale, index, base], disp
+ add t1, t1, t2
+ st t1, ds, [scale, index, base], disp
+};
+
+def macroop ADD_P_I
+{
+ rdip t7
+ limm t2, imm
+ ld t1, ds, [scale, index, base], disp
+ add t1, t1, t2
+ st t1, ds, [scale, index, base], disp
+};
+
def macroop SUB_R_I
{
limm t1, imm