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target/ppc/excp_helper: Add a fallthrough for fix compiler warning 

When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
../target/ppc/excp_helper.c: In function ‘powerpc_excp’:
../target/ppc/excp_helper.c:529:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
  529 |         msr |= env->error_code;
      |         ~~~~^~~~~~~~~~~~~~~~~~
../target/ppc/excp_helper.c:530:5: note: here
  530 |     case POWERPC_EXCP_HDECR:     /* Hypervisor decrementer exception         */
      |     ^~~~

Add the corresponding "fall through" comment to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Message-Id: <20201028055107.2170401-1-kuhn.chenqun@huawei.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Chen Qun 2020-10-28 13:51:07 +08:00 committed by David Gibson
parent 3c8c36c908
commit 295397f53c
1 changed files with 1 additions and 0 deletions
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target/ppc/excp_helper.c
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@ -527,6 +527,7 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
break;
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
msr |= env->error_code;
/* fall through */
case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */