1 files changed, 32 insertions, 0 deletions
diff --git a/src/cuda-sim/instructions.cc b/src/cuda-sim/instructions.cc
index 4792efc..2314bef 100644
--- a/src/cuda-sim/instructions.cc
+++ b/src/cuda-sim/instructions.cc
@@ -5441,6 +5441,38 @@ void shfl_impl(const ptx_instruction *pI, core_t *core, warp_inst_t inst) {
   }
 }
 
+void shf_impl(const ptx_instruction *pI, ptx_thread_info *thread) {
+  ptx_reg_t a,b,c,d;
+  const operand_info &dst = pI->dst();
+  const operand_info &src1 = pI->src1();
+  const operand_info &src2 = pI->src2();
+  const operand_info &src3 = pI->src3();
+
+  // Only b32 is allowed  
+  unsigned i_type = pI->get_type();
+  a = thread->get_operand_value(src1, dst, i_type, thread, 1);
+  b = thread->get_operand_value(src2, dst, i_type, thread, 1);
+  c = thread->get_operand_value(src3, dst, i_type, thread, 1);
+
+  if(i_type != B32_TYPE)
+    printf("Only the b32 data_type is allowed per the ISA\n");
+
+  unsigned clamp_mode = pI->clamp_mode();
+  unsigned n = c.u32 & 0x1f;
+  if(clamp_mode) {
+    if(c.u32 < 32)
+      n = c;
+    else
+      n = 32;
+  }
+  if(pI->left_mode())
+    d.u32 = (b.u32 << n) | (a.u32 >> (32-n));
+  else
+    d.u32 = (b.u32 << (32-n)) | (a.u32 >> n);
+
+  thread->set_operand_value(dst, d, i_type, thread, pI);
+}
+
 void shl_impl(const ptx_instruction *pI, ptx_thread_info *thread) {
   ptx_reg_t a, b, d;
   const operand_info &dst = pI->dst();