diff options
Diffstat (limited to 'x86/TargetPrinter.ml')
| -rw-r--r-- | x86/TargetPrinter.ml | 93 |
1 files changed, 82 insertions, 11 deletions
diff --git a/x86/TargetPrinter.ml b/x86/TargetPrinter.ml index 4a576df3..c19359fa 100644 --- a/x86/TargetPrinter.ml +++ b/x86/TargetPrinter.ml @@ -66,6 +66,11 @@ let preg oc = function | FR r -> freg oc r | _ -> assert false +let preg_annot = function + | IR r -> if Archi.ptr64 then int64_reg_name r else int32_reg_name r + | FR r -> float_reg_name r + | _ -> assert false + let z oc n = output_string oc (Z.to_string n) (* 32/64 bit dependencies *) @@ -75,6 +80,11 @@ let data_pointer = if Archi.ptr64 then ".quad" else ".long" (* The comment deliminiter *) let comment = "#" +(* Base-2 log of a Caml integer *) +let rec log2 n = + assert (n > 0); + if n = 1 then 0 else 1 + log2 (n lsr 1) + (* System dependend printer functions *) module type SYSTEM = sig @@ -121,6 +131,7 @@ module ELF_System : SYSTEM = | Section_debug_abbrev -> ".section .debug_abbrev,\"\",@progbits" | Section_debug_ranges -> ".section .debug_ranges,\"\",@progbits" | Section_debug_str -> ".section .debug_str,\"MS\",@progbits,1" + | Section_ais_annotation -> sprintf ".section \"__compcert_ais_annotations\",\"\",@note" let stack_alignment = 16 @@ -179,15 +190,11 @@ module MacOS_System : SYSTEM = | Section_debug_str -> ".section __DWARF,__debug_str,regular,debug" | Section_debug_ranges -> ".section __DWARF,__debug_ranges,regular,debug" | Section_debug_abbrev -> ".section __DWARF,__debug_abbrev,regular,debug" + | Section_ais_annotation -> assert false (* Not supported under MacOS *) let stack_alignment = 16 (* mandatory *) - (* Base-2 log of a Caml integer *) - let rec log2 n = - assert (n > 0); - if n = 1 then 0 else 1 + log2 (n lsr 1) - let print_align oc n = fprintf oc " .align %d\n" (log2 n) @@ -228,6 +235,63 @@ module MacOS_System : SYSTEM = end +(* Printer functions for Cygwin *) +module Cygwin_System : SYSTEM = + struct + + let raw_symbol oc s = + fprintf oc "_%s" s + + let symbol oc symb = + raw_symbol oc (extern_atom symb) + + let label oc lbl = + fprintf oc "L%d" lbl + + let name_of_section = function + | Section_text -> ".text" + | Section_data i | Section_small_data i -> + if i then ".data" else "COMM" + | Section_const i | Section_small_const i -> + if i then ".section .rdata,\"dr\"" else "COMM" + | Section_string -> ".section .rdata,\"dr\"" + | Section_literal -> ".section .rdata,\"dr\"" + | Section_jumptable -> ".text" + | Section_user(s, wr, ex) -> + sprintf ".section %s, \"%s\"\n" + s (if ex then "xr" else if wr then "d" else "dr") + | Section_debug_info _ -> ".section .debug_info,\"dr\"" + | Section_debug_loc -> ".section .debug_loc,\"dr\"" + | Section_debug_line _ -> ".section .debug_line,\"dr\"" + | Section_debug_abbrev -> ".section .debug_abbrev,\"dr\"" + | Section_debug_ranges -> ".section .debug_ranges,\"dr\"" + | Section_debug_str-> assert false (* Should not be used *) + | Section_ais_annotation -> assert false (* Not supported for coff binaries *) + + let stack_alignment = 8 (* minimum is 4, 8 is better for perfs *) + + let print_align oc n = + fprintf oc " .balign %d\n" n + + let print_mov_rs oc rd id = + fprintf oc " movl $%a, %a\n" symbol id ireg rd + + let print_fun_info _ _ = () + + let print_var_info _ _ = () + + let print_epilogue _ = () + + let print_comm_decl oc name sz al = + fprintf oc " .comm %a, %s, %d\n" + symbol name (Z.to_string sz) (log2 al) + + let print_lcomm_decl oc name sz al = + fprintf oc " .lcomm %a, %s, %d\n" + symbol name (Z.to_string sz) (log2 al) + + end + module Target(System: SYSTEM):TARGET = struct @@ -735,11 +799,18 @@ module Target(System: SYSTEM):TARGET = assert false | Pbuiltin(ef, args, res) -> begin match ef with - | EF_annot(txt, targs) -> - fprintf oc "%s annotation: " comment; - print_annot_text preg "%esp" oc (camlstring_of_coqstring txt) args + | EF_annot(kind,txt, targs) -> + let annot = + begin match (P.to_int kind) with + | 1 -> annot_text preg_annot "sp" (camlstring_of_coqstring txt) args + | 2 -> let lbl = new_label () in + fprintf oc "%a: " label lbl; + ais_annot_text lbl preg_annot "r1" (camlstring_of_coqstring txt) args + | _ -> assert false + end in + fprintf oc "%s annotation: %S\n" comment annot | EF_debug(kind, txt, targs) -> - print_debug_info comment print_file_line preg "%esp" oc + print_debug_info comment print_file_line preg_annot "%esp" oc (P.to_int kind) (extern_atom txt) args | EF_inline_asm(txt, sg, clob) -> fprintf oc "%s begin inline assembly\n\t" comment; @@ -875,8 +946,8 @@ end let sel_target () = let module S = (val (match Configuration.system with + | "linux" | "bsd" -> (module ELF_System:SYSTEM) | "macosx" -> (module MacOS_System:SYSTEM) - | "linux" - | "bsd" -> (module ELF_System:SYSTEM) + | "cygwin" -> (module Cygwin_System:SYSTEM) | _ -> invalid_arg ("System " ^ Configuration.system ^ " not supported") ):SYSTEM) in (module Target(S):TARGET) |