diff options
Diffstat (limited to 'ia32/Asm.v')
| -rw-r--r-- | ia32/Asm.v | 38 |
1 files changed, 16 insertions, 22 deletions
@@ -211,8 +211,7 @@ Inductive instruction: Type := | Plabel(l: label) | Pallocframe(sz: Z)(ofs_ra ofs_link: int) | Pfreeframe(sz: Z)(ofs_ra ofs_link: int) - | Pbuiltin(ef: external_function)(args: list preg)(res: list preg) - | Pannot(ef: external_function)(args: list (annot_arg preg)) + | Pbuiltin(ef: external_function)(args: list (builtin_arg preg))(res: builtin_res preg) | Padcl_ir (n: int) (r: ireg) | Padcl_rr (r1: ireg) (r2: ireg) | Paddl (r1: ireg) (r2: ireg) @@ -288,6 +287,15 @@ Fixpoint set_regs (rl: list preg) (vl: list val) (rs: regset) : regset := | _, _ => rs end. +(** Assigning the result of a builtin *) + +Fixpoint set_res (res: builtin_res preg) (v: val) (rs: regset) : regset := + match res with + | BR r => rs#r <- v + | BR_none => rs + | BR_longofwords hi lo => set_res lo (Val.loword v) (set_res hi (Val.hiword v) rs) + end. + Section RELSEM. (** Looking up instructions in a code sequence by position. *) @@ -782,8 +790,6 @@ Definition exec_instr (f: function) (i: instruction) (rs: regset) (m: mem) : out end | Pbuiltin ef args res => Stuck (**r treated specially below *) - | Pannot ef args => - Stuck (**r treated specially below *) (** The following instructions and directives are not generated directly by Asmgen, so we do not model them. *) | Padcl_ir _ _ @@ -880,24 +886,16 @@ Inductive step: state -> trace -> state -> Prop := exec_instr f i rs m = Next rs' m' -> step (State rs m) E0 (State rs' m') | exec_step_builtin: - forall b ofs f ef args res rs m t vl rs' m', + forall b ofs f ef args res rs m vargs t vres rs' m', rs PC = Vptr b ofs -> Genv.find_funct_ptr ge b = Some (Internal f) -> find_instr (Int.unsigned ofs) f.(fn_code) = Some (Pbuiltin ef args res) -> - external_call' ef ge (map rs args) m t vl m' -> + eval_builtin_args ge rs (rs ESP) m args vargs -> + external_call ef ge vargs m t vres m' -> rs' = nextinstr_nf - (set_regs res vl + (set_res res vres (undef_regs (map preg_of (destroyed_by_builtin ef)) rs)) -> step (State rs m) t (State rs' m') - | exec_step_annot: - forall b ofs f ef args rs m vargs t v m', - rs PC = Vptr b ofs -> - Genv.find_funct_ptr ge b = Some (Internal f) -> - find_instr (Int.unsigned ofs) f.(fn_code) = Some (Pannot ef args) -> - eval_annot_args ge rs (rs ESP) m args vargs -> - external_call ef ge vargs m t v m' -> - step (State rs m) t - (State (nextinstr rs) m') | exec_step_external: forall b ef args res rs m t rs' m', rs PC = Vptr b Int.zero -> @@ -961,12 +959,8 @@ Ltac Equalities := + split. constructor. auto. + discriminate. + discriminate. -+ inv H11. -+ exploit external_call_determ'. eexact H4. eexact H9. intros [A B]. - split. auto. intros. destruct B; auto. subst. auto. -+ inv H12. -+ assert (vargs0 = vargs) by (eapply eval_annot_args_determ; eauto). subst vargs0. - exploit external_call_determ. eexact H5. eexact H13. intros [A B]. ++ assert (vargs0 = vargs) by (eapply eval_builtin_args_determ; eauto). subst vargs0. + exploit external_call_determ. eexact H5. eexact H11. intros [A B]. split. auto. intros. destruct B; auto. subst. auto. + assert (args0 = args) by (eapply extcall_arguments_determ; eauto). subst args0. exploit external_call_determ'. eexact H4. eexact H9. intros [A B]. |