[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[PULL 14/15] target/ppc: fix unreachable code in fpu_helper.c

From: Daniel Henrique Barboza
Subject: [PULL 14/15] target/ppc: fix unreachable code in fpu_helper.c
Date: Tue, 21 Jun 2022 06:43:59 -0300

Commit c29018cc7395 added an env->fpscr OR operation using a ternary
that checks if 'error' is not zero:

    env->fpscr |= error ? FP_FEX : 0;

However, in the current body of do_fpscr_check_status(), 'error' is
granted to be always non-zero at that point. The result is that Coverity
is less than pleased:

  Control flow issues  (DEADCODE)
Execution cannot reach the expression "0ULL" inside this statement:
"env->fpscr |= (error ? 1073...".

Remove the ternary and always make env->fpscr |= FP_FEX.

Cc: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Cc: Richard Henderson <richard.henderson@linaro.org>
Fixes: Coverity CID 1489442
Fixes: c29018cc7395 ("target/ppc: Implemented xvf*ger*")
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Message-Id: <20220602191048.137511-1-danielhb413@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
 target/ppc/fpu_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
index fed0ce420a..7ab6beadad 100644
--- a/target/ppc/fpu_helper.c
+++ b/target/ppc/fpu_helper.c
@@ -464,7 +464,7 @@ static void do_fpscr_check_status(CPUPPCState *env, 
uintptr_t raddr)
     cs->exception_index = POWERPC_EXCP_PROGRAM;
     env->error_code = error | POWERPC_EXCP_FP;
-    env->fpscr |= error ? FP_FEX : 0;
+    env->fpscr |= FP_FEX;
     /* Deferred floating-point exception after target FPSCR update */
     if (fp_exceptions_enabled(env)) {
         raise_exception_err_ra(env, cs->exception_index,

reply via email to

[Prev in Thread] Current Thread [Next in Thread]