diff options
Diffstat (limited to 'model/riscv_sys_regs.sail')
| -rw-r--r-- | model/riscv_sys_regs.sail | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/model/riscv_sys_regs.sail b/model/riscv_sys_regs.sail index 4774469..cb44664 100644 --- a/model/riscv_sys_regs.sail +++ b/model/riscv_sys_regs.sail @@ -164,10 +164,10 @@ function legalize_misa(m : Misa, v : xlenbits) -> Misa = { else { /* Suppress enabling C if C was disabled at boot (i.e. not supported) */ let m = if not(sys_enable_rvc()) then m else update_C(m, v.C()); - /* Handle updates for F/D. */ - if not(sys_enable_fdext()) | (v.D() == 0b1 & v.F() == 0b0) + /* Suppress updates to misa.{f,d} if disabled at boot */ + if not(sys_enable_fdext()) then m - else update_D(update_F(m, v.F()), v.D()) + else update_D(update_F(m, v.F()), v.D() & v.F()) } } |