diff mbox series

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

Message ID 20220621094400.122800-15-danielhb413@gmail.com (mailing list archive)
State New, archived
Headers show
Series [PULL,01/15] target/ppc: Implemented vector divide instructions | expand

Commit Message

Daniel Henrique Barboza June 21, 2022, 9:43 a.m. UTC 
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 mbox series

Patch

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,