Support the fcmXX zero instructions.

	sim/aarch64/
	* simulator.c (do_scalar_FCMGE_zero): New.
	(do_scalar_FCMLE_zero, do_scalar_FCMGT_zero, do_scalar_FCMEQ_zero)
	(do_scalar_FCMLT_zero): Likewise.
	(do_scalar_vec): Add calls to new functions.

	sim/testsuite/sim/aarch64/
	* fcmXX.s: New.

diff --git a/sim/aarch64/ChangeLog b/sim/aarch64/ChangeLog
index 1d97291..0b3d21d 100644 (file)
--- a/sim/aarch64/ChangeLog
+++ b/sim/aarch64/ChangeLog
@@ -1,3 +1,9 @@
+2017-04-08  Jim Wilson  <jim.wilson@linaro.org>
+
+       * simulator.c (do_scalar_FCMGE_zero, do_scalar_FCMLE_zero,
+       do_scalar_FCMGT_zero, do_scalar_FCMEQ_zero, do_scalar_FCMLT_zero): New.
+       (do_scalar_vec): Add calls to new functions.
+
 2017-03-25  Jim Wilson  <jim.wilson@linaro.org>
 
        * simulator.c (set_flags_for_add32): Cast result to uint32_t in carry

diff --git a/sim/aarch64/simulator.c b/sim/aarch64/simulator.c
index f0668ad..c2e02b1 100644 (file)
--- a/sim/aarch64/simulator.c
+++ b/sim/aarch64/simulator.c
@@ -8926,6 +8926,146 @@ do_scalar_SSHL (sim_cpu *cpu)
                         aarch64_get_vec_s64 (cpu, rn, 0) >> - shift);
 }
 
+/* Floating point scalar compare greater than or equal to 0.  */
+static void
+do_scalar_FCMGE_zero (sim_cpu *cpu)
+{
+  /* instr [31,23] = 0111 1110 1
+     instr [22,22] = size
+     instr [21,16] = 1000 00
+     instr [15,10] = 1100 10
+     instr [9, 5]  = Rn
+     instr [4, 0]  = Rd.  */
+
+  unsigned size = INSTR (22, 22);
+  unsigned rn = INSTR (9, 5);
+  unsigned rd = INSTR (4, 0);
+
+  NYI_assert (31, 23, 0x0FD);
+  NYI_assert (21, 16, 0x20);
+  NYI_assert (15, 10, 0x32);
+
+  TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
+  if (size)
+    aarch64_set_vec_u64 (cpu, rd, 0,
+                        aarch64_get_vec_double (cpu, rn, 0) >= 0.0 ? -1 : 0);
+  else
+    aarch64_set_vec_u32 (cpu, rd, 0,
+                        aarch64_get_vec_float (cpu, rn, 0) >= 0.0 ? -1 : 0);
+}
+
+/* Floating point scalar compare less than or equal to 0.  */
+static void
+do_scalar_FCMLE_zero (sim_cpu *cpu)
+{
+  /* instr [31,23] = 0111 1110 1
+     instr [22,22] = size
+     instr [21,16] = 1000 00
+     instr [15,10] = 1101 10
+     instr [9, 5]  = Rn
+     instr [4, 0]  = Rd.  */
+
+  unsigned size = INSTR (22, 22);
+  unsigned rn = INSTR (9, 5);
+  unsigned rd = INSTR (4, 0);
+
+  NYI_assert (31, 23, 0x0FD);
+  NYI_assert (21, 16, 0x20);
+  NYI_assert (15, 10, 0x36);
+
+  TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
+  if (size)
+    aarch64_set_vec_u64 (cpu, rd, 0,
+                        aarch64_get_vec_double (cpu, rn, 0) <= 0.0 ? -1 : 0);
+  else
+    aarch64_set_vec_u32 (cpu, rd, 0,
+                        aarch64_get_vec_float (cpu, rn, 0) <= 0.0 ? -1 : 0);
+}
+
+/* Floating point scalar compare greater than 0.  */
+static void
+do_scalar_FCMGT_zero (sim_cpu *cpu)
+{
+  /* instr [31,23] = 0101 1110 1
+     instr [22,22] = size
+     instr [21,16] = 1000 00
+     instr [15,10] = 1100 10
+     instr [9, 5]  = Rn
+     instr [4, 0]  = Rd.  */
+
+  unsigned size = INSTR (22, 22);
+  unsigned rn = INSTR (9, 5);
+  unsigned rd = INSTR (4, 0);
+
+  NYI_assert (31, 23, 0x0BD);
+  NYI_assert (21, 16, 0x20);
+  NYI_assert (15, 10, 0x32);
+
+  TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
+  if (size)
+    aarch64_set_vec_u64 (cpu, rd, 0,
+                        aarch64_get_vec_double (cpu, rn, 0) > 0.0 ? -1 : 0);
+  else
+    aarch64_set_vec_u32 (cpu, rd, 0,
+                        aarch64_get_vec_float (cpu, rn, 0) > 0.0 ? -1 : 0);
+}
+
+/* Floating point scalar compare equal to 0.  */
+static void
+do_scalar_FCMEQ_zero (sim_cpu *cpu)
+{
+  /* instr [31,23] = 0101 1110 1
+     instr [22,22] = size
+     instr [21,16] = 1000 00
+     instr [15,10] = 1101 10
+     instr [9, 5]  = Rn
+     instr [4, 0]  = Rd.  */
+
+  unsigned size = INSTR (22, 22);
+  unsigned rn = INSTR (9, 5);
+  unsigned rd = INSTR (4, 0);
+
+  NYI_assert (31, 23, 0x0BD);
+  NYI_assert (21, 16, 0x20);
+  NYI_assert (15, 10, 0x36);
+
+  TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
+  if (size)
+    aarch64_set_vec_u64 (cpu, rd, 0,
+                        aarch64_get_vec_double (cpu, rn, 0) == 0.0 ? -1 : 0);
+  else
+    aarch64_set_vec_u32 (cpu, rd, 0,
+                        aarch64_get_vec_float (cpu, rn, 0) == 0.0 ? -1 : 0);
+}
+
+/* Floating point scalar compare less than 0.  */
+static void
+do_scalar_FCMLT_zero (sim_cpu *cpu)
+{
+  /* instr [31,23] = 0101 1110 1
+     instr [22,22] = size
+     instr [21,16] = 1000 00
+     instr [15,10] = 1110 10
+     instr [9, 5]  = Rn
+     instr [4, 0]  = Rd.  */
+
+  unsigned size = INSTR (22, 22);
+  unsigned rn = INSTR (9, 5);
+  unsigned rd = INSTR (4, 0);
+
+  NYI_assert (31, 23, 0x0BD);
+  NYI_assert (21, 16, 0x20);
+  NYI_assert (15, 10, 0x3A);
+
+  TRACE_DECODE (cpu, "emulated at line %d", __LINE__);
+  if (size)
+    aarch64_set_vec_u64 (cpu, rd, 0,
+                        aarch64_get_vec_double (cpu, rn, 0) < 0.0 ? -1 : 0);
+  else
+    aarch64_set_vec_u32 (cpu, rd, 0,
+                        aarch64_get_vec_float (cpu, rn, 0) < 0.0 ? -1 : 0);
+}
+
 static void
 do_scalar_shift (sim_cpu *cpu)
 {
@@ -9249,7 +9389,9 @@ do_scalar_vec (sim_cpu *cpu)
        case 0x0D: do_scalar_CMGT (cpu); return;
        case 0x11: do_scalar_USHL (cpu); return;
        case 0x2E: do_scalar_NEG (cpu); return;
+       case 0x32: do_scalar_FCMGE_zero (cpu); return;
        case 0x35: do_scalar_FABD (cpu); return;
+       case 0x36: do_scalar_FCMLE_zero (cpu); return;
        case 0x39: do_scalar_FCM (cpu); return;
        case 0x3B: do_scalar_FCM (cpu); return;
        default:
@@ -9263,6 +9405,9 @@ do_scalar_vec (sim_cpu *cpu)
        {
        case 0x21: do_double_add (cpu); return;
        case 0x11: do_scalar_SSHL (cpu); return;
+       case 0x32: do_scalar_FCMGT_zero (cpu); return;
+       case 0x36: do_scalar_FCMEQ_zero (cpu); return;
+       case 0x3A: do_scalar_FCMLT_zero (cpu); return;
        default:
          HALT_NYI;
        }

diff --git a/sim/testsuite/sim/aarch64/ChangeLog b/sim/testsuite/sim/aarch64/ChangeLog
index 0941446..5aaa67f 100644 (file)
--- a/sim/testsuite/sim/aarch64/ChangeLog
+++ b/sim/testsuite/sim/aarch64/ChangeLog
@@ -1,3 +1,7 @@
+2017-04-08  Jim Wilson  <jim.wilson@linaro.org>
+
+       * fcmXX.s: New.
+
 2017-03-25  Jim Wilson  <jim.wilson@linaro.org>
 
        * adds.s: Add checks for values -2 and 1, where C is not set.

diff --git a/sim/testsuite/sim/aarch64/fcmXX.s b/sim/testsuite/sim/aarch64/fcmXX.s
new file mode 100644 (file)
index 0000000..cc1a2a9
--- /dev/null
+++ b/sim/testsuite/sim/aarch64/fcmXX.s
@@ -0,0 +1,77 @@
+# mach: aarch64
+
+# Check the FP scalar compare zero instructions: fcmeq, fcmle, fcmlt, fcmge,
+# fcmgt.
+# Check values -1, 0, and 1.
+
+.include "testutils.inc"
+
+       start
+       fmov s0, wzr
+       fcmeq s1, s0, #0.0
+       mov w0, v1.s[0]
+       cmp w0, #-1
+       bne .Lfailure
+       fmov s0, #-1.0
+       fcmeq s1, s0, #0.0
+       mov w0, v1.s[0]
+       cmp w0, #0
+       bne .Lfailure
+       fmov d0, xzr
+       fcmeq d1, d0, #0.0
+       mov x0, v1.d[0]
+       cmp x0, #-1
+       bne .Lfailure
+       fmov d0, #1.0
+       fcmeq d1, d0, #0.0
+       mov x0, v1.d[0]
+       cmp x0, #0
+       bne .Lfailure
+
+       fmov s0, #-1.0
+       fcmle s1, s0, #0.0
+       mov w0, v1.s[0]
+       cmp w0, #-1
+       bne .Lfailure
+       fmov d0, #-1.0
+       fcmle d1, d0, #0.0
+       mov x0, v1.d[0]
+       cmp x0, #-1
+       bne .Lfailure
+
+       fmov s0, #-1.0
+       fcmlt s1, s0, #0.0
+       mov w0, v1.s[0]
+       cmp w0, #-1
+       bne .Lfailure
+       fmov d0, #-1.0
+       fcmlt d1, d0, #0.0
+       mov x0, v1.d[0]
+       cmp x0, #-1
+       bne .Lfailure
+
+       fmov s0, #1.0
+       fcmge s1, s0, #0.0
+       mov w0, v1.s[0]
+       cmp w0, #-1
+       bne .Lfailure
+       fmov d0, #1.0
+       fcmge d1, d0, #0.0
+       mov x0, v1.d[0]
+       cmp x0, #-1
+       bne .Lfailure
+
+       fmov s0, #1.0
+       fcmgt s1, s0, #0.0
+       mov w0, v1.s[0]
+       cmp w0, #-1
+       bne .Lfailure
+       fmov d0, #1.0
+       fcmgt d1, d0, #0.0
+       mov x0, v1.d[0]
+       cmp x0, #-1
+       bne .Lfailure
+
+       pass
+.Lfailure:
+       fail