diff options
Diffstat (limited to 'ia32/Asm.v')
| -rw-r--r-- | ia32/Asm.v | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -145,6 +145,8 @@ Inductive instruction: Type := | Psub_rr (rd: ireg) (r1: ireg) | Pimul_rr (rd: ireg) (r1: ireg) | Pimul_ri (rd: ireg) (n: int) + | Pimul_r (r1: ireg) + | Pmul_r (r1: ireg) | Pdiv (r1: ireg) | Pidiv (r1: ireg) | Pand_rr (rd: ireg) (r1: ireg) @@ -540,6 +542,12 @@ Definition exec_instr (c: code) (i: instruction) (rs: regset) (m: mem) : outcome Next (nextinstr_nf (rs#rd <- (Val.mul rs#rd rs#r1))) m | Pimul_ri rd n => Next (nextinstr_nf (rs#rd <- (Val.mul rs#rd (Vint n)))) m + | Pimul_r r1 => + Next (nextinstr_nf (rs#EAX <- (Val.mul rs#EAX rs#r1) + #EDX <- (Val.mulhs rs#EAX rs#r1))) m + | Pmul_r r1 => + Next (nextinstr_nf (rs#EAX <- (Val.mul rs#EAX rs#r1) + #EDX <- (Val.mulhu rs#EAX rs#r1))) m | Pdiv r1 => let vn := rs#EAX in let vd := (rs#EDX <- Vundef)#r1 in match Val.divu vn vd, Val.modu vn vd with |