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target/openrisc: Setup FPU for detecting tininess before rounding

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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>
This commit is contained in:
Stafford Horne 2023-03-17 04:18:36 +09:00
parent 9156ca76cb
commit 874c52991e
1 changed files with 4 additions and 0 deletions
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4
target/openrisc/cpu.c
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@ -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;