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| author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2009-11-10 12:50:57 +0000 |
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| committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2009-11-10 12:50:57 +0000 |
| commit | 74487f079dd56663f97f9731cea328931857495c (patch) | |
| tree | 9de10b895da39adffaf66bff983d6ed573898068 /powerpc/PrintAsm.ml | |
| parent | 0486654fac91947fec93d18a0738dd7aa10bcf96 (diff) | |
| download | compcert-74487f079dd56663f97f9731cea328931857495c.tar.gz compcert-74487f079dd56663f97f9731cea328931857495c.zip | |
Added support for jump tables in back end.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1171 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'powerpc/PrintAsm.ml')
| -rw-r--r-- | powerpc/PrintAsm.ml | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/powerpc/PrintAsm.ml b/powerpc/PrintAsm.ml index 539d9894..df1b0629 100644 --- a/powerpc/PrintAsm.ml +++ b/powerpc/PrintAsm.ml @@ -261,6 +261,17 @@ let print_instruction oc labels = function fprintf oc " blr\n" | Pbt(bit, lbl) -> fprintf oc " bt %a, %a\n" crbit bit label (transl_label lbl) + | Pbtbl(r, tbl) -> + let lbl = new_label() in + fprintf oc " rlwinm %a, %a, 2, 0, 29\n" ireg GPR12 ireg r; + fprintf oc " addis %a, %a, %a\n" ireg GPR12 ireg GPR12 label_high lbl; + fprintf oc " lwz %a, %a(%a)\n" ireg GPR12 label_low lbl ireg GPR12; + fprintf oc " mtctr %a\n" ireg GPR12; + fprintf oc " bctr\n"; + fprintf oc "%a:" label lbl; + List.iter + (fun l -> fprintf oc " .long %a\n" label (transl_label l)) + tbl | Pcmplw(r1, r2) -> fprintf oc " cmplw %a, %a, %a\n" creg 0 ireg r1 ireg r2 | Pcmplwi(r1, c) -> @@ -472,11 +483,15 @@ let print_instruction oc labels = function if Labelset.mem lbl labels then fprintf oc "%a:\n" label (transl_label lbl) -let rec labels_of_code = function - | [] -> Labelset.empty +let rec labels_of_code accu = function + | [] -> + accu | (Pb lbl | Pbf(_, lbl) | Pbt(_, lbl)) :: c -> - Labelset.add lbl (labels_of_code c) - | _ :: c -> labels_of_code c + labels_of_code (Labelset.add lbl accu) c + | Pbtbl(_, tbl) :: c -> + labels_of_code (List.fold_right Labelset.add tbl accu) c + | _ :: c -> + labels_of_code accu c let print_function oc name code = Hashtbl.clear current_function_labels; @@ -488,7 +503,7 @@ let print_function oc name code = if not (Cil2Csyntax.atom_is_static name) then fprintf oc " .globl %a\n" symbol name; fprintf oc "%a:\n" symbol name; - List.iter (print_instruction oc (labels_of_code code)) code + List.iter (print_instruction oc (labels_of_code Labelset.empty code)) code (* Generation of stub functions *) |