match: Check the number of elements in broadcasting operands

The broadcasting decorator {1to##} must describe exactly how many times
the memory element is repeated in order to clearly match the correct
instruction format.

For example,
    vaddpd zmm30,zmm29,QWORD [rdx+0x3f8]{1to8}   ; good
    vaddpd zmm30,zmm29,QWORD [rdx+0x3f8]{1to16}  ; fail qword * 16 = 1024b

    vaddps zmm30,zmm29,DWORD [rcx]{1to16}	 ; good
    vaddps zmm30,zmm29,DWORD [rcx]{1to8}	 ; fail dword * 8 = 256b

Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/nasm.h b/nasm.h
index 34adc69..b68a8ba 100644
--- a/nasm.h
+++ b/nasm.h
@@ -1048,6 +1048,7 @@ enum decorator_tokens {
  * .........................1...... static rounding
  * ........................1....... SAE
  * ......................11........ broadcast element size
+ * ....................11.......... number of broadcast elements
  */
 #define OP_GENVAL(val, bits, shift)     (((val) & ((UINT64_C(1) << (bits)) - 1)) << (shift))
 
@@ -1119,6 +1120,19 @@ enum decorator_tokens {
 #define BR_BITS32               GEN_BRSIZE(0)
 #define BR_BITS64               GEN_BRSIZE(1)
 
+/*
+ * Number of broadcasting elements
+ *
+ * Bits: 10 - 11
+ */
+#define BRNUM_SHIFT             (10)
+#define BRNUM_BITS              (2)
+#define BRNUM_MASK              OP_GENMASK(BRNUM_BITS, BRNUM_SHIFT)
+#define VAL_BRNUM(val)          OP_GENVAL(val, BRNUM_BITS, BRNUM_SHIFT)
+
+#define BR_1TO8                 VAL_BRNUM(0)
+#define BR_1TO16                VAL_BRNUM(1)
+
 #define MASK                    OPMASK_MASK             /* Opmask (k1 ~ 7) can be used */
 #define Z                       Z_MASK
 #define B32                     (BRDCAST_MASK|BR_BITS32) /* {1to16} : broadcast 32b * 16 to zmm(512b) */