target/arm: Initialize ARMMMUFaultInfo in v7m_stack_read/write

The get_phys_addr() functions take a pointer to an ARMMMUFaultInfo
struct, which they fill in only if a fault occurs. This means that
the caller must always zero-initialize the struct before passing
it in. We forgot to do this in v7m_stack_read() and v7m_stack_write().
Correct the error.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181011172057.9466-1-peter.maydell@linaro.org

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 7a53098888dc0e72613e1c29785e0104f359582d..e3946562aa17a037cfd86ff1f27c5db49a10536c 100644 (file)
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -6472,7 +6472,7 @@ static bool v7m_stack_write(ARMCPU *cpu, uint32_t addr, uint32_t value,
     target_ulong page_size;
     hwaddr physaddr;
     int prot;
-    ARMMMUFaultInfo fi;
+    ARMMMUFaultInfo fi = {};
     bool secure = mmu_idx & ARM_MMU_IDX_M_S;
     int exc;
     bool exc_secure;
@@ -6534,7 +6534,7 @@ static bool v7m_stack_read(ARMCPU *cpu, uint32_t *dest, uint32_t addr,
     target_ulong page_size;
     hwaddr physaddr;
     int prot;
-    ARMMMUFaultInfo fi;
+    ARMMMUFaultInfo fi = {};
     bool secure = mmu_idx & ARM_MMU_IDX_M_S;
     int exc;
     bool exc_secure;