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-rw-r--r--include/opcode/tic80.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/opcode/tic80.h b/include/opcode/tic80.h
index 4065528..f37d938 100644
--- a/include/opcode/tic80.h
+++ b/include/opcode/tic80.h
@@ -200,6 +200,15 @@ extern const struct tic80_operand tic80_operands[];
#define TIC80_OPERAND_BASEREL (1 << 11)
+/* This operand is an "endmask" field for a shift instruction.
+ It is treated special in that it can have values of 0-32,
+ where 0 and 32 result in the same instruction. The assembler
+ must be able to accept both endmask values. This disassembler
+ has no way of knowing from the instruction which value was
+ given at assembly time, so it just uses '0'. */
+
+#define TIC80_OPERAND_ENDMASK (1 << 12)
+
/* This operand is one of the 32 general purpose registers.
The disassembler prints these with a leading 'r'. */