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simplifcation of encoding table, properly define compositionaly various encoding definitions.

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ed
2026-09-09 14:03:30 -04:00
parent 588fa20778
commit 95e67a8c1a
6 changed files with 397 additions and 827 deletions
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code/8086/decoder.h
+8
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@@ -71,6 +71,8 @@ typedef Struct_(X8616_DecodedInstruction) {
X8616_OpcodePrefix opcode;
X8616_Direction d;
X8616_Width w;
X8616_ALU alu;
X8616_Condition cc;
B1 has_mod_rm;
U1 size;
U1 size_required;
@@ -89,6 +91,9 @@ typedef Enum_(U2, X8616_DecodePlanFlags) {
Bit_(x8616_plan_has_sr, 9),
Bit_(x8616_plan_uses_rm, 10),
Bit_(x8616_plan_is_prefix, 11),
Bit_(x8616_plan_has_alu, 12),
Bit_(x8616_plan_has_cc, 13),
Bit_(x8616_plan_alu_modrm, 14),
};
typedef Enum_(U1, X8616_DecodePayload) {
@@ -132,6 +137,9 @@ typedef Struct_(X8616_DecodePlan) {
X8616_BytePattern mod_rm;
X8616_BytePattern post_opcode;
U1 alu_shift;
U1 cc_shift;
};
enum {