From a6b6bf31121d975c915c01f501618d97df7879fb Mon Sep 17 00:00:00 2001 From: Xavier Leroy Date: Sat, 9 May 2015 09:00:51 +0200 Subject: Extended inline asm: revised treatment of clobbered registers. - Treat clobbered registers as being destroyed by EF_inline_asm builtins (which is the truth, semantically). - To enable the above, represent clobbers as Coq strings rather than idents and move register_by_name from Machregsaux.ml to Machregs.v. - Side benefit: more efficient implementation of Machregsaux.name_of_register. -# Please enter the commit message for your changes. Lines starting --- ia32/Machregsaux.ml | 31 +++++++++---------------------- 1 file changed, 9 insertions(+), 22 deletions(-) (limited to 'ia32/Machregsaux.ml') diff --git a/ia32/Machregsaux.ml b/ia32/Machregsaux.ml index 5e98b58b..6485e752 100644 --- a/ia32/Machregsaux.ml +++ b/ia32/Machregsaux.ml @@ -12,38 +12,25 @@ (** Auxiliary functions on machine registers *) +open Camlcoq open Machregs -let register_names = [ - ("EAX", AX); ("EBX", BX); ("ECX", CX); ("EDX", DX); - ("ESI", SI); ("EDI", DI); ("EBP", BP); - ("XMM0", X0); ("XMM1", X1); ("XMM2", X2); ("XMM3", X3); - ("XMM4", X4); ("XMM5", X5); ("XMM6", X6); ("XMM7", X7); - ("ST0", FP0) -] +let register_names : (mreg, string) Hashtbl.t = Hashtbl.create 31 + +let _ = + List.iter + (fun (s, r) -> Hashtbl.add register_names r (camlstring_of_coqstring s)) + Machregs.register_names let scratch_register_names = [] let name_of_register r = - let rec rev_assoc = function - | [] -> None - | (a, b) :: rem -> if b = r then Some a else rev_assoc rem - in rev_assoc register_names + try Some (Hashtbl.find register_names r) with Not_found -> None let register_by_name s = - try - Some(List.assoc (String.uppercase s) register_names) - with Not_found -> - None + Machregs.register_by_name (coqstring_of_camlstring (String.uppercase s)) let can_reserve_register r = List.mem r Conventions1.int_callee_save_regs || List.mem r Conventions1.float_callee_save_regs -let mregs_of_clobber idl = - List.fold_left - (fun l c -> - match register_by_name (Camlcoq.extern_atom c) with - | Some r -> r :: l - | None -> l) - [] idl -- cgit