[12/14] disas/riscv: Add rv_codec_vror_vi for vror.vi

Commit Message

Max Chou Oct. 25, 2023, 3:13 p.m. UTC

Add rv_codec_vror_vi for the vector crypto instruction - vror.vi.
The rotate amount of vror.vi is defined by combining seperated bits.

Signed-off-by: Max Chou <[e-mail]>
---
 disas/riscv.c | 11 +++++++++++
 disas/riscv.h |  1 +
 2 files changed, 12 insertions(+)

Patch

diff --git a/disas/riscv.c b/disas/riscv.c
index 8e89e1d1157..6d60033abab 100644
--- a/disas/riscv.c
+++ b/disas/riscv.c
@@ -4011,6 +4011,12 @@  static uint32_t operand_vzimm10(rv_inst inst)
     return (inst << 34) >> 54;
 }
 
+static uint32_t operand_vzimm6(rv_inst inst)
+{
+    return ((inst << 37) >> 63) << 5 |
+        ((inst << 44) >> 59);
+}
+
 static uint32_t operand_bs(rv_inst inst)
 {
     return (inst << 32) >> 62;
@@ -4393,6 +4399,11 @@  static void decode_inst_operands(rv_decode *dec, rv_isa isa)
         dec->imm = operand_vimm(inst);
         dec->vm = operand_vm(inst);
         break;
+    case rv_codec_vror_vi:
+        dec->rd = operand_rd(inst);
+        dec->rs2 = operand_rs2(inst);
+        dec->imm = operand_vzimm6(inst);
+        break;
     case rv_codec_vsetvli:
         dec->rd = operand_rd(inst);
         dec->rs1 = operand_rs1(inst);
diff --git a/disas/riscv.h b/disas/riscv.h
index b242d73b25e..19e5ed2ce63 100644
--- a/disas/riscv.h
+++ b/disas/riscv.h
@@ -152,6 +152,7 @@  typedef enum {
     rv_codec_v_i,
     rv_codec_vsetvli,
     rv_codec_vsetivli,
+    rv_codec_vror_vi,
     rv_codec_zcb_ext,
     rv_codec_zcb_mul,
     rv_codec_zcb_lb,