[Qemu-devel] [PATCH 1/1] target/ppc: Fix do_float_check_status vs inexact

[Richard Henderson <richard.henderson@linaro.org>]

The underflow and inexact exceptions are not mutually exclusive.
Check for both of them.  Tidy the reset of FPSCR[FI].

Fixes: https://bugs.launchpad.net/bugs/1841442
Reported-by: Paul Clarke <pc@us.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/ppc/fpu_helper.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c
index 07bc9051b0..2e023c5204 100644
--- a/target/ppc/fpu_helper.c
+++ b/target/ppc/fpu_helper.c
@@ -630,19 +630,15 @@ static void do_float_check_status(CPUPPCState *env, uintptr_t raddr)
 {
     CPUState *cs = env_cpu(env);
     int status = get_float_exception_flags(&env->fp_status);
-    bool inexact_happened = false;
 
     if (status & float_flag_overflow) {
         float_overflow_excp(env);
     } else if (status & float_flag_underflow) {
         float_underflow_excp(env);
-    } else if (status & float_flag_inexact) {
-        float_inexact_excp(env);
-        inexact_happened = true;
     }
-
-    /* if the inexact flag was not set */
-    if (inexact_happened == false) {
+    if (status & float_flag_inexact) {
+        float_inexact_excp(env);
+    } else {
         env->fpscr &= ~(1 << FPSCR_FI); /* clear the FPSCR[FI] bit */
     }
 
-- 
2.17.1