From: Helge Deller <del...@gmx.de>
The system mask is a restricted subset of the psw, with only
a couple of reserved bits. It is better to handle this up
front in the translator than require helper_swap_system_mask
to use cpu_hppa_get_psw and cpu_hppa_put_psw.
Signed-off-by: Helge Deller <del...@gmx.de>
[rth: Handle this in expand_sm_imm not helper_swap_system_mask.]
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
target/hppa/translate.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index bcce65d587..f3b17ba16d 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -77,11 +77,14 @@ typedef struct DisasContext {
/* Note that ssm/rsm instructions number PSW_W and PSW_E differently. */
static int expand_sm_imm(DisasContext *ctx, int val)
{
- if (val & PSW_SM_E) {
- val = (val & ~PSW_SM_E) | PSW_E;
- }
- if (val & PSW_SM_W) {
- val = (val & ~PSW_SM_W) | PSW_W;
+ /* Keep unimplemented bits disabled -- see cpu_hppa_put_psw. */
+ if (ctx->is_pa20) {
+ if (val & PSW_SM_W) {
+ val |= PSW_W;
+ }
+ val &= ~(PSW_SM_W | PSW_SM_E | PSW_G);
+ } else {
+ val &= ~(PSW_SM_W | PSW_SM_E | PSW_O);
}
return val;
}
--
2.34.1
