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authorStafford Horne <shorne@gmail.com>2023-03-17 04:18:36 +0900
committerStafford Horne <shorne@gmail.com>2023-05-11 15:40:28 +0100
commit874c52991e1fbe020812b4b15440b6875369aacf (patch)
treea489ae60bad94c10cb4fedba418c42028d94d478
parent9156ca76cb39ff1d72e701dec4a907f73592d88f (diff)
downloadfocaccia-qemu-874c52991e1fbe020812b4b15440b6875369aacf.tar.gz
focaccia-qemu-874c52991e1fbe020812b4b15440b6875369aacf.zip
target/openrisc: Setup FPU for detecting tininess before rounding
OpenRISC defines tininess to be detected before rounding.  Setup qemu to
obey this.

Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-rw-r--r--target/openrisc/cpu.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index 0ce4f796fa..61d748cfdc 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -22,6 +22,7 @@
 #include "qemu/qemu-print.h"
 #include "cpu.h"
 #include "exec/exec-all.h"
+#include "fpu/softfloat-helpers.h"
 #include "tcg/tcg.h"
 
 static void openrisc_cpu_set_pc(CPUState *cs, vaddr value)
@@ -90,6 +91,9 @@ static void openrisc_cpu_reset_hold(Object *obj)
     s->exception_index = -1;
     cpu_set_fpcsr(&cpu->env, 0);
 
+    set_float_detect_tininess(float_tininess_before_rounding,
+                              &cpu->env.fp_status);
+
 #ifndef CONFIG_USER_ONLY
     cpu->env.picmr = 0x00000000;
     cpu->env.picsr = 0x00000000;