Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20201110' into staging

target-arm queue:
 * hw/arm/Kconfig: ARM_V7M depends on PTIMER
 * Minor coding style fixes
 * docs: add some notes on the sbsa-ref machine
 * hw/arm/virt: Remove dependency on Cortex-A15 MPCore peripherals
 * target/arm: Fix neon VTBL/VTBX for len > 1
 * hw/arm/armsse: Correct expansion MPC interrupt lines
 * hw/misc/stm32f2xx_syscfg: Remove extraneous IRQ
 * hw/arm/nseries: Remove invalid/unnecessary n8x0_uart_setup()
 * hw/arm/musicpal: Don't connect two qemu_irqs directly to the same input
 * hw/arm/musicpal: Only use qdev_get_gpio_in() when necessary
 * hw/arm/nseries: Check return value from load_image_targphys()
 * tests/qtest/npcm7xx_rng-test: count runs properly
 * target/arm/translate-neon.c: Handle VTBL UNDEF case before VFP access check

# gpg: Signature made Tue 10 Nov 2020 11:17:45 GMT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20201110:
  target/arm/translate-neon.c: Handle VTBL UNDEF case before VFP access check
  tests/qtest/npcm7xx_rng-test: count runs properly
  hw/arm/nseries: Check return value from load_image_targphys()
  hw/arm/musicpal: Only use qdev_get_gpio_in() when necessary
  hw/arm/musicpal: Don't connect two qemu_irqs directly to the same input
  hw/arm/nseries: Remove invalid/unnecessary n8x0_uart_setup()
  hw/misc/stm32f2xx_syscfg: Remove extraneous IRQ
  hw/arm/armsse: Correct expansion MPC interrupt lines
  target/arm: Fix neon VTBL/VTBX for len > 1
  hw/arm/virt: Remove dependency on Cortex-A15 MPCore peripherals
  docs: add some notes on the sbsa-ref machine
  target/arm: add space before the open parenthesis '('
  target/arm: Don't use '#' flag of printf format
  target/arm: add spaces around operator
  ssi: Fix bad printf format specifiers
  hw/arm/Kconfig: ARM_V7M depends on PTIMER

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 18 insertions, 32 deletions

diff --git a/target/arm/translate-neon.c.inc b/target/arm/translate-neon.c.inc
index 59368cb243..2403825d15 100644
--- a/target/arm/translate-neon.c.inc
+++ b/target/arm/translate-neon.c.inc
@@ -2861,9 +2861,8 @@ static bool trans_VEXT(DisasContext *s, arg_VEXT *a)
 
 static bool trans_VTBL(DisasContext *s, arg_VTBL *a)
 {
-    int n;
-    TCGv_i32 tmp, tmp2, tmp3, tmp4;
-    TCGv_ptr ptr1;
+    TCGv_i64 val, def;
+    TCGv_i32 desc;
 
     if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
         return false;
@@ -2875,47 +2874,34 @@ static bool trans_VTBL(DisasContext *s, arg_VTBL *a)
         return false;
     }
 
-    if (!vfp_access_check(s)) {
-        return true;
-    }
-
-    n = a->len + 1;
-    if ((a->vn + n) > 32) {
+    if ((a->vn + a->len + 1) > 32) {
         /*
          * This is UNPREDICTABLE; we choose to UNDEF to avoid the
          * helper function running off the end of the register file.
          */
         return false;
     }
-    n <<= 3;
-    tmp = tcg_temp_new_i32();
-    if (a->op) {
-        read_neon_element32(tmp, a->vd, 0, MO_32);
-    } else {
-        tcg_gen_movi_i32(tmp, 0);
+
+    if (!vfp_access_check(s)) {
+        return true;
     }
-    tmp2 = tcg_temp_new_i32();
-    read_neon_element32(tmp2, a->vm, 0, MO_32);
-    ptr1 = vfp_reg_ptr(true, a->vn);
-    tmp4 = tcg_const_i32(n);
-    gen_helper_neon_tbl(tmp2, tmp2, tmp, ptr1, tmp4);
 
+    desc = tcg_const_i32((a->vn << 2) | a->len);
+    def = tcg_temp_new_i64();
     if (a->op) {
-        read_neon_element32(tmp, a->vd, 1, MO_32);
+        read_neon_element64(def, a->vd, 0, MO_64);
     } else {
-        tcg_gen_movi_i32(tmp, 0);
+        tcg_gen_movi_i64(def, 0);
     }
-    tmp3 = tcg_temp_new_i32();
-    read_neon_element32(tmp3, a->vm, 1, MO_32);
-    gen_helper_neon_tbl(tmp3, tmp3, tmp, ptr1, tmp4);
-    tcg_temp_free_i32(tmp);
-    tcg_temp_free_i32(tmp4);
-    tcg_temp_free_ptr(ptr1);
+    val = tcg_temp_new_i64();
+    read_neon_element64(val, a->vm, 0, MO_64);
 
-    write_neon_element32(tmp2, a->vd, 0, MO_32);
-    write_neon_element32(tmp3, a->vd, 1, MO_32);
-    tcg_temp_free_i32(tmp2);
-    tcg_temp_free_i32(tmp3);
+    gen_helper_neon_tbl(val, cpu_env, desc, val, def);
+    write_neon_element64(val, a->vd, 0, MO_64);
+
+    tcg_temp_free_i64(def);
+    tcg_temp_free_i64(val);
+    tcg_temp_free_i32(desc);
     return true;
 }