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[v1,3/3] target/riscv: Regen floating point rounding mode in dynamic mode

Message ID ea4f280e6f77e734c8e555e3c98d10085ce9f5b6.1593547870.git.alistair.francis@wdc.com
State New
Headers show
Series [v1,1/3] hw/char: Convert the Ibex UART to use the qdev Clock model | expand

Commit Message

Alistair Francis June 30, 2020, 8:12 p.m. UTC 
When a guest specificies the the rounding mode should be dynamic 0b111
then we want to re-caclulate the rounding mode on each instruction. The
gen_helper_set_rounding_mode() function will correctly check the
rounding mode and handle a dynamic rounding, we just need to make sure
it's always called if dynamic rounding is selected.

Fixes: 1885350 ("RISCV dynamic rounding mode is not behaving correctly")
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/translate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index ce71ca7a92..a39eba679a 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -490,7 +490,7 @@  static void gen_set_rm(DisasContext *ctx, int rm)
 {
     TCGv_i32 t0;
 
-    if (ctx->frm == rm) {
+    if (ctx->frm == rm && rm != 7) {
         return;
     }
     ctx->frm = rm;