[RFC PATCH v3 59/78] hw/intc: add fallthrough pseudo-keyword

[Emmanouil Pitsidianakis]

In preparation of raising -Wimplicit-fallthrough to 5, replace all
fall-through comments with the fallthrough attribute pseudo-keyword.

Signed-off-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
---
 hw/intc/apic.c          |  2 +-
 hw/intc/arm_gicv3_kvm.c | 16 ++++++++--------
 hw/intc/armv7m_nvic.c   | 12 ++++++------
 hw/intc/xilinx_intc.c   |  2 +-
 4 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index ac3d47d231..30f341c722 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -183,7 +183,7 @@ void apic_deliver_pic_intr(DeviceState *dev, int level)
             if (!(lvt & APIC_LVT_LEVEL_TRIGGER))
                 break;
             apic_reset_bit(s->irr, lvt & 0xff);
-            /* fall through */
+            fallthrough;
         case APIC_DM_EXTINT:
             apic_update_irq(s);
             break;
diff --git a/hw/intc/arm_gicv3_kvm.c b/hw/intc/arm_gicv3_kvm.c
index 72ad916d3d..782cef3390 100644
--- a/hw/intc/arm_gicv3_kvm.c
+++ b/hw/intc/arm_gicv3_kvm.c
@@ -479,11 +479,11 @@ static void kvm_arm_gicv3_put(GICv3State *s)
             kvm_gicc_access(s, ICC_AP0R_EL1(3), ncpu, &reg64, true);
             reg64 = c->icc_apr[GICV3_G0][2];
             kvm_gicc_access(s, ICC_AP0R_EL1(2), ncpu, &reg64, true);
-            /* fall through */
+            fallthrough;
         case 6:
             reg64 = c->icc_apr[GICV3_G0][1];
             kvm_gicc_access(s, ICC_AP0R_EL1(1), ncpu, &reg64, true);
-            /* fall through */
+            fallthrough;
         default:
             reg64 = c->icc_apr[GICV3_G0][0];
             kvm_gicc_access(s, ICC_AP0R_EL1(0), ncpu, &reg64, true);
@@ -495,11 +495,11 @@ static void kvm_arm_gicv3_put(GICv3State *s)
             kvm_gicc_access(s, ICC_AP1R_EL1(3), ncpu, &reg64, true);
             reg64 = c->icc_apr[GICV3_G1NS][2];
             kvm_gicc_access(s, ICC_AP1R_EL1(2), ncpu, &reg64, true);
-            /* fall through */
+            fallthrough;
         case 6:
             reg64 = c->icc_apr[GICV3_G1NS][1];
             kvm_gicc_access(s, ICC_AP1R_EL1(1), ncpu, &reg64, true);
-            /* fall through */
+            fallthrough;
         default:
             reg64 = c->icc_apr[GICV3_G1NS][0];
             kvm_gicc_access(s, ICC_AP1R_EL1(0), ncpu, &reg64, true);
@@ -636,11 +636,11 @@ static void kvm_arm_gicv3_get(GICv3State *s)
             c->icc_apr[GICV3_G0][3] = reg64;
             kvm_gicc_access(s, ICC_AP0R_EL1(2), ncpu, &reg64, false);
             c->icc_apr[GICV3_G0][2] = reg64;
-            /* fall through */
+            fallthrough;
         case 6:
             kvm_gicc_access(s, ICC_AP0R_EL1(1), ncpu, &reg64, false);
             c->icc_apr[GICV3_G0][1] = reg64;
-            /* fall through */
+            fallthrough;
         default:
             kvm_gicc_access(s, ICC_AP0R_EL1(0), ncpu, &reg64, false);
             c->icc_apr[GICV3_G0][0] = reg64;
@@ -652,11 +652,11 @@ static void kvm_arm_gicv3_get(GICv3State *s)
             c->icc_apr[GICV3_G1NS][3] = reg64;
             kvm_gicc_access(s, ICC_AP1R_EL1(2), ncpu, &reg64, false);
             c->icc_apr[GICV3_G1NS][2] = reg64;
-            /* fall through */
+            fallthrough;
         case 6:
             kvm_gicc_access(s, ICC_AP1R_EL1(1), ncpu, &reg64, false);
             c->icc_apr[GICV3_G1NS][1] = reg64;
-            /* fall through */
+            fallthrough;
         default:
             kvm_gicc_access(s, ICC_AP1R_EL1(0), ncpu, &reg64, false);
             c->icc_apr[GICV3_G1NS][0] = reg64;
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c
index 03b6b8c986..72d3ae985e 100644
--- a/hw/intc/armv7m_nvic.c
+++ b/hw/intc/armv7m_nvic.c
@@ -2224,7 +2224,7 @@ static MemTxResult nvic_sysreg_read(void *opaque, hwaddr 
addr,
     /* reads of set and clear both return the status */
     case 0x100 ... 0x13f: /* NVIC Set enable */
         offset += 0x80;
-        /* fall through */
+        fallthrough;
     case 0x180 ... 0x1bf: /* NVIC Clear enable */
         val = 0;
         startvec = 8 * (offset - 0x180) + NVIC_FIRST_IRQ; /* vector # */
@@ -2238,7 +2238,7 @@ static MemTxResult nvic_sysreg_read(void *opaque, hwaddr 
addr,
         break;
     case 0x200 ... 0x23f: /* NVIC Set pend */
         offset += 0x80;
-        /* fall through */
+        fallthrough;
     case 0x280 ... 0x2bf: /* NVIC Clear pend */
         val = 0;
         startvec = 8 * (offset - 0x280) + NVIC_FIRST_IRQ; /* vector # */
@@ -2280,7 +2280,7 @@ static MemTxResult nvic_sysreg_read(void *opaque, hwaddr 
addr,
             val = 0;
             break;
         }
-        /* fall through */
+        fallthrough;
     case 0xd1c ... 0xd23: /* System Handler Priority (SHPR2, SHPR3) */
         val = 0;
         for (i = 0; i < size; i++) {
@@ -2355,7 +2355,7 @@ static MemTxResult nvic_sysreg_write(void *opaque, hwaddr 
addr,
     case 0x100 ... 0x13f: /* NVIC Set enable */
         offset += 0x80;
         setval = 1;
-        /* fall through */
+        fallthrough;
     case 0x180 ... 0x1bf: /* NVIC Clear enable */
         startvec = 8 * (offset - 0x180) + NVIC_FIRST_IRQ;
 
@@ -2373,7 +2373,7 @@ static MemTxResult nvic_sysreg_write(void *opaque, hwaddr 
addr,
          */
         offset += 0x80;
         setval = 1;
-        /* fall through */
+        fallthrough;
     case 0x280 ... 0x2bf: /* NVIC Clear pend */
         startvec = 8 * (offset - 0x280) + NVIC_FIRST_IRQ; /* vector # */
 
@@ -2408,7 +2408,7 @@ static MemTxResult nvic_sysreg_write(void *opaque, hwaddr 
addr,
         if (!arm_feature(&s->cpu->env, ARM_FEATURE_M_MAIN)) {
             goto exit_ok;
         }
-        /* fall through */
+        fallthrough;
     case 0xd1c ... 0xd23: /* System Handler Priority (SHPR2, SHPR3) */
         for (i = 0; i < size; i++) {
             unsigned hdlidx = (offset - 0xd14) + i;
diff --git a/hw/intc/xilinx_intc.c b/hw/intc/xilinx_intc.c
index 6e5012e66e..245f452898 100644
--- a/hw/intc/xilinx_intc.c
+++ b/hw/intc/xilinx_intc.c
@@ -131,7 +131,7 @@ static void pic_write(void *opaque, hwaddr addr,
             if ((p->regs[R_MER] & 2)) {
                 break;
             }
-            /* fallthrough */
+            fallthrough;
         default:
             if (addr < ARRAY_SIZE(p->regs))
                 p->regs[addr] = value;
-- 
2.39.2