diff options
Diffstat (limited to 'driver/Driver.ml')
-rw-r--r-- | driver/Driver.ml | 449 |
1 files changed, 106 insertions, 343 deletions
diff --git a/driver/Driver.ml b/driver/Driver.ml index 567ff018..b8c92d6c 100644 --- a/driver/Driver.ml +++ b/driver/Driver.ml @@ -12,155 +12,16 @@ open Printf open Commandline -open Camlcoq open Clflags open Timing - -(* Location of the compatibility library *) - -let stdlib_path = ref Configuration.stdlib_path - -(* Use standard headers *) -let use_standard_headers = ref Configuration.has_standard_headers +open Driveraux +open Frontend let dump_options = ref false (* Optional sdump suffix *) let sdump_suffix = ref ".json" -(* Invocation of external tools *) - -let rec waitpid_no_intr pid = - try Unix.waitpid [] pid - with Unix.Unix_error (Unix.EINTR, _, _) -> waitpid_no_intr pid - -let command ?stdout args = - if !option_v then begin - eprintf "+ %s" (String.concat " " args); - begin match stdout with - | None -> () - | Some f -> eprintf " > %s" f - end; - prerr_endline "" - end; - let argv = Array.of_list args in - assert (Array.length argv > 0); - try - let fd_out = - match stdout with - | None -> Unix.stdout - | Some f -> - Unix.openfile f [Unix.O_WRONLY; Unix.O_CREAT; Unix.O_TRUNC] 0o666 in - let pid = - Unix.create_process argv.(0) argv Unix.stdin fd_out Unix.stderr in - let (_, status) = - waitpid_no_intr pid in - if stdout <> None then Unix.close fd_out; - match status with - | Unix.WEXITED rc -> rc - | Unix.WSIGNALED n | Unix.WSTOPPED n -> - eprintf "Command '%s' killed on a signal.\n" argv.(0); -1 - with Unix.Unix_error(err, fn, param) -> - eprintf "Error executing '%s': %s: %s %s\n" - argv.(0) fn (Unix.error_message err) param; - -1 - -let command_error n exc = - eprintf "Error: %s command failed with exit code %d (use -v to see invocation)\n" n exc - -let safe_remove file = - try Sys.remove file with Sys_error _ -> () - -(* Printing of error messages *) - -let print_error oc msg = - let print_one_error = function - | Errors.MSG s -> output_string oc (camlstring_of_coqstring s) - | Errors.CTX i -> output_string oc (extern_atom i) - | Errors.POS i -> fprintf oc "%ld" (P.to_int32 i) - in - List.iter print_one_error msg; - output_char oc '\n' - -(* Determine names for output files. We use -o option if specified - and if this is the final destination file (not a dump file). - Otherwise, we generate a file in the current directory. *) - -let output_filename ?(final = false) source_file source_suffix output_suffix = - match !option_o with - | Some file when final -> file - | _ -> - Filename.basename (Filename.chop_suffix source_file source_suffix) - ^ output_suffix - -(* A variant of [output_filename] where the default output name is fixed *) - -let output_filename_default default_file = - match !option_o with - | Some file -> file - | None -> default_file - -(* From C to preprocessed C *) - -let preprocess ifile ofile = - let output = - if ofile = "-" then None else Some ofile in - let cmd = List.concat [ - Configuration.prepro; - ["-D__COMPCERT__"]; - (if !use_standard_headers - then ["-I" ^ Filename.concat !stdlib_path "include" ] - else []); - List.rev !prepro_options; - [ifile] - ] in - let exc = command ?stdout:output cmd in - if exc <> 0 then begin - if ofile <> "-" then safe_remove ofile; - command_error "preprocessor" exc; - eprintf "Error during preprocessing.\n"; - exit 2 - end - -(* From preprocessed C to Csyntax *) - -let parse_c_file sourcename ifile = - Debug.init_compile_unit sourcename; - Sections.initialize(); - (* Simplification options *) - let simplifs = - "b" (* blocks: mandatory *) - ^ (if !option_fstruct_passing then "s" else "") - ^ (if !option_fbitfields then "f" else "") - ^ (if !option_fpacked_structs then "p" else "") - in - (* Parsing and production of a simplified C AST *) - let ast = - match Parse.preprocessed_file simplifs sourcename ifile with - | None -> exit 2 - | Some p -> p in - (* Save C AST if requested *) - if !option_dparse then begin - let ofile = output_filename sourcename ".c" ".parsed.c" in - let oc = open_out ofile in - Cprint.program (Format.formatter_of_out_channel oc) ast; - close_out oc - end; - (* Conversion to Csyntax *) - let csyntax = - match Timing.time "CompCert C generation" C2C.convertProgram ast with - | None -> exit 2 - | Some p -> p in - flush stderr; - (* Save CompCert C AST if requested *) - if !option_dcmedium then begin - let ofile = output_filename sourcename ".c" ".compcert.c" in - let oc = open_out ofile in - PrintCsyntax.print_program (Format.formatter_of_out_channel oc) csyntax; - close_out oc - end; - csyntax - (* Dump Asm code in asm format for the validator *) let jdump_magic_number = "CompCertJDUMP" ^ Version.version @@ -280,13 +141,6 @@ let linker exe_name files = exit 2 end -(* All input files should exist *) - -let ensure_inputfile_exists name = - if not (Sys.file_exists name) then begin - eprintf "error: no such file or directory: '%s'\n" name; - exit 2 - end (* Processing of a .c file *) @@ -433,152 +287,113 @@ let perform_actions () = | (fn, arg) :: rem -> let res = fn arg in res :: perform rem in perform (List.rev !actions) -(* Command-line parsing *) - -let explode_comma_option s = - match Str.split (Str.regexp ",") s with - | [] -> assert false - | _ :: tl -> tl - let version_string = if Version.buildnr <> "" && Version.tag <> "" then - sprintf "The CompCert verified compiler, %s, Build: %s, Tag: %s\n" Version.version Version.buildnr Version.tag + sprintf "The CompCert C verified compiler, %s, Build: %s, Tag: %s\n" Version.version Version.buildnr Version.tag else "The CompCert C verified compiler, version "^ Version.version ^ "\n" let usage_string = version_string ^ - "Usage: ccomp [options] <source files> -Recognized source files: - .c C source file - .i or .p C source file that should not be preprocessed - .cm Cminor source file - .s Assembly file - .S Assembly file that must be preprocessed - .o Object file - .a Library file -Processing options: - -c Compile to object file only (no linking), result in <file>.o - -E Preprocess only, send result to standard output - -S Compile to assembler only, save result in <file>.s - -o <file> Generate output in <file> -Preprocessing options: - -I<dir> Add <dir> to search path for #include files - -include <file> Process <file> as if #include \"<file>\" appears at the first - line of the primary source file. - -D<symb>=<val> Define preprocessor symbol - -U<symb> Undefine preprocessor symbol - -Wp,<opt> Pass option <opt> to the preprocessor - -Xpreprocessor <opt> Pass option <opt> to the preprocessor - -M (GCC only) Ouput a rule suitable for make describing the - dependencies of the main source file - -MM (GCC only) Like -M but do not mention system header files - -MF <file> (GCC only) Specifies file <file> as output file for -M or -MM - -MG (GCC only) Assumes missing header files are generated for -M - -MP (GCC only) Add a phony target for each dependency other than - the main file - -MT <target> (GCC only) Change the target of the rule emitted by dependency - generation - -MQ <target> (GCC only) Like -MT but quotes <target> - -nostdinc (GCC only) Do not search the standard system directories for - header files - -imacros <file> (GCC only) Like -include but throws output produced by - preprocessing of <file> away - -idirafter <dir> (GCC only) Search <dir> for header files after all directories - specified with -I and the standard system directories - -isystem <dir> (GCC only) Search <dir> for header files after all directories - specified by -I but before the standard system directories - -iquote <dir> (GCC only) Like -isystem but only for headers included with - quotes - -P (GCC only) Do not generate linemarkers - -C (GCC only) Do not discard comments - -CC (GCC only) Do not discard comments, including during macro - expansion -Language support options (use -fno-<opt> to turn off -f<opt>) : - -fbitfields Emulate bit fields in structs [off] - -flongdouble Treat 'long double' as 'double' [off] - -fstruct-passing Support passing structs and unions by value as function - results or function arguments [off] - -fstruct-return Like -fstruct-passing (deprecated) - -fvararg-calls Support calls to variable-argument functions [on] - -funprototyped Support calls to old-style functions without prototypes [on] - -fpacked-structs Emulate packed structs [off] - -finline-asm Support inline 'asm' statements [off] - -fall Activate all language support options above - -fnone Turn off all language support options above -Debugging options: - -g Generate debugging information - -gdwarf- (GCC only) Generate debug information in DWARF v2 or DWARF v3 - -gdepth <n> Control generation of debugging information - (<n>=0: none, <n>=1: only-globals, <n>=2: globals + locals - without locations, <n>=3: full;) - -frename-static Rename static functions and declarations -Optimization options: (use -fno-<opt> to turn off -f<opt>) - -O Optimize the compiled code [on by default] - -O0 Do not optimize the compiled code - -O1 -O2 -O3 Synonymous for -O - -Os Optimize for code size in preference to code speed - -ftailcalls Optimize function calls in tail position [on] - -fconst-prop Perform global constant propagation [on] - -ffloat-const-prop <n> Control constant propagation of floats - (<n>=0: none, <n>=1: limited, <n>=2: full; default is full) - -fcse Perform common subexpression elimination [on] - -fredundancy Perform redundancy elimination [on] -Code generation options: (use -fno-<opt> to turn off -f<opt>) - -ffpu Use FP registers for some integer operations [on] - -fsmall-data <n> Set maximal size <n> for allocation in small data area - -fsmall-const <n> Set maximal size <n> for allocation in small constant area - -falign-functions <n> Set alignment (in bytes) of function entry points - -falign-branch-targets <n> Set alignment (in bytes) of branch targets - -falign-cond-branches <n> Set alignment (in bytes) of conditional branches -Target processor options: - -mthumb (ARM only) Use Thumb2 instruction encoding - -marm (ARM only) Use classic ARM instruction encoding -Assembling options: - -Wa,<opt> Pass option <opt> to the assembler - -Xassembler <opt> Pass <opt> as an option to the assembler -Linking options: - -l<lib> Link library <lib> - -L<dir> Add <dir> to search path for libraries - -nostartfiles (GCC only) Do not use the standard system startup files when - linking - -nodefaultlibs (GCC only) Do not use the standard system libraries when - linking - -nostdlib (GCC only) Do not use the standard system startup files or - libraries when linking - -s Remove all symbol table and relocation information from the - executable - -static Prevent linking with the shared libraries - -T <file> Use <file> as linker command file - -Wl,<opt> Pass option <opt> to the linker - -WUl,<opt> (GCC only) Pass option <opt> to the gcc used for linking - -Xlinker <opt> Pass <opt> as an option to the linker - -u <symb> Pretend the symbol <symb> is undefined to force linking of - library modules to define it. -Tracing options: - -dprepro Save C file after preprocessing in <file>.i - -dparse Save C file after parsing and elaboration in <file>.parsed.c - -dc Save generated Compcert C in <file>.compcert.c - -dclight Save generated Clight in <file>.light.c - -dcminor Save generated Cminor in <file>.cm - -drtl Save RTL at various optimization points in <file>.rtl.<n> - -dltl Save LTL after register allocation in <file>.ltl - -dmach Save generated Mach code in <file>.mach - -dasm Save generated assembly in <file>.s - -sdump Save info for post-linking validation in <file>.json - -doptions Save the compiler configurations in <file>.opt.json -General options: - -stdlib <dir> Set the path of the Compcert run-time library - -v Print external commands before invoking them - -timings Show the time spent in various compiler passes - -version Print the version string and exit -Interpreter mode: - -interp Execute given .c files using the reference interpreter - -quiet Suppress diagnostic messages for the interpreter - -trace Have the interpreter produce a detailed trace of reductions - -random Randomize execution order - -all Simulate all possible execution orders -" + "Usage: ccomp [options] <source files>\n\ +Recognized source files:\n\ +\ .c C source file\n\ +\ .i or .p C source file that should not be preprocessed\n\ +\ .cm Cminor source file\n\ +\ .s Assembly file\n\ +\ .S Assembly file that must be preprocessed\n\ +\ .o Object file\n\ +\ .a Library file\n\ +Processing options:\n\ +\ -c Compile to object file only (no linking), result in <file>.o\n\ +\ -E Preprocess only, send result to standard output\n\ +\ -S Compile to assembler only, save result in <file>.s\n\ +\ -o <file> Generate output in <file>\n" ^ + prepro_help ^ +"Language support options (use -fno-<opt> to turn off -f<opt>) :\n\ +\ -fbitfields Emulate bit fields in structs [off]\n\ +\ -flongdouble Treat 'long double' as 'double' [off]\n\ +\ -fstruct-passing Support passing structs and unions by value as function\n\ +\ results or function arguments [off]\n\ +\ -fstruct-return Like -fstruct-passing (deprecated)\n\ +\ -fvararg-calls Support calls to variable-argument functions [on]\n\ +\ -funprototyped Support calls to old-style functions without prototypes [on]\n\ +\ -fpacked-structs Emulate packed structs [off]\n\ +\ -finline-asm Support inline 'asm' statements [off]\n\ +\ -fall Activate all language support options above\n\ +\ -fnone Turn off all language support options above\n\ +Debugging options:\n\ +\ -g Generate debugging information\n\ +\ -gdwarf- (GCC only) Generate debug information in DWARF v2 or DWARF v3\n\ +\ -gdepth <n> Control generation of debugging information\n\ +\ (<n>=0: none, <n>=1: only-globals, <n>=2: globals + locals\n\ +\ without locations, <n>=3: full;)\n\ +\ -frename-static Rename static functions and declarations\n\ +Optimization options: (use -fno-<opt> to turn off -f<opt>)\n\ +\ -O Optimize the compiled code [on by default]\n\ +\ -O0 Do not optimize the compiled code\n\ +\ -O1 -O2 -O3 Synonymous for -O\n\ +\ -Os Optimize for code size in preference to code speed\n\ +\ -ftailcalls Optimize function calls in tail position [on]\n\ +\ -fconst-prop Perform global constant propagation [on]\n\ +\ -ffloat-const-prop <n> Control constant propagation of floats\n\ +\ (<n>=0: none, <n>=1: limited, <n>=2: full; default is full)\n\ +\ -fcse Perform common subexpression elimination [on]\n\ +\ -fredundancy Perform redundancy elimination [on]\n\ +Code generation options: (use -fno-<opt> to turn off -f<opt>)\n\ +\ -ffpu Use FP registers for some integer operations [on]\n\ +\ -fsmall-data <n> Set maximal size <n> for allocation in small data area\n\ +\ -fsmall-const <n> Set maximal size <n> for allocation in small constant area\n\ +\ -falign-functions <n> Set alignment (in bytes) of function entry points\n\ +\ -falign-branch-targets <n> Set alignment (in bytes) of branch targets\n\ +\ -falign-cond-branches <n> Set alignment (in bytes) of conditional branches\n\ +Target processor options:\n\ +\ -mthumb (ARM only) Use Thumb2 instruction encoding\n\ +\ -marm (ARM only) Use classic ARM instruction encoding\n\ +Assembling options:\n\ +\ -Wa,<opt> Pass option <opt> to the assembler\n\ +\ -Xassembler <opt> Pass <opt> as an option to the assembler\n\ +Linking options:\n\ +\ -l<lib> Link library <lib>\n\ +\ -L<dir> Add <dir> to search path for libraries\n\ +\ -nostartfiles (GCC only) Do not use the standard system startup files when\n\ +\ linking\n\ +\ -nodefaultlibs (GCC only) Do not use the standard system libraries when\n\ +\ linking\n\ +\ -nostdlib (GCC only) Do not use the standard system startup files or\n\ +\ libraries when linking\n\ +\ -s Remove all symbol table and relocation information from the\n\ +\ executable\n\ +\ -static Prevent linking with the shared libraries\n\ +\ -T <file> Use <file> as linker command file\n\ +\ -Wl,<opt> Pass option <opt> to the linker\n\ +\ -WUl,<opt> (GCC only) Pass option <opt> to the gcc used for linking\n\ +\ -Xlinker <opt> Pass <opt> as an option to the linker\n\ +\ -u <symb> Pretend the symbol <symb> is undefined to force linking of\n\ +\ library modules to define it.\n\ +Tracing options:\n\ +\ -dprepro Save C file after preprocessing in <file>.i\n\ +\ -dparse Save C file after parsing and elaboration in <file>.parsed.c\n\ +\ -dc Save generated Compcert C in <file>.compcert.c\n\ +\ -dclight Save generated Clight in <file>.light.c\n\ +\ -dcminor Save generated Cminor in <file>.cm\n\ +\ -drtl Save RTL at various optimization points in <file>.rtl.<n>\n\ +\ -dltl Save LTL after register allocation in <file>.ltl\n\ +\ -dmach Save generated Mach code in <file>.mach\n\ +\ -dasm Save generated assembly in <file>.s\n\ +\ -sdump Save info for post-linking validation in <file>.json\n\ +\ -doptions Save the compiler configurations in <file>.opt.json\n\ +General options:\n\ +\ -stdlib <dir> Set the path of the Compcert run-time library\n\ +\ -v Print external commands before invoking them\n\ +\ -timings Show the time spent in various compiler passes\n\ +\ -version Print the version string and exit\n\ +Interpreter mode:\n\ +\ -interp Execute given .c files using the reference interpreter\n\ +\ -quiet Suppress diagnostic messages for the interpreter\n\ +\ -trace Have the interpreter produce a detailed trace of reductions\n\ +\ -random Randomize execution order\n\ +\ -all Simulate all possible execution orders\n" let print_usage_and_exit _ = printf "%s" usage_string; exit 0 @@ -599,35 +414,10 @@ let optimization_options = [ let set_all opts = List.iter (fun r -> r := true) opts let unset_all opts = List.iter (fun r -> r := false) opts -let gnu_option s = - if Configuration.system <> "diab" then - true - else begin - eprintf "ccomp: warning: option %s only supported for gcc backend\n" s; - false - end - let gnu_linker_opt s = if gnu_option s then push_linker_arg s -(* Add gnu preprocessor list *) -let gnu_prepro_opt_key key s = - if gnu_option s then - prepro_options := s::key::!prepro_options - -(* Add gnu preprocessor option *) -let gnu_prepro_opt s = - if gnu_option s then - prepro_options := s::!prepro_options - -(* Add gnu preprocessor option s and the implict -E *) -let gnu_prepro_opt_e s = - if gnu_option s then begin - prepro_options := s :: !prepro_options; - option_E := true - end - let num_source_files = ref 0 let num_input_files = ref 0 @@ -648,38 +438,11 @@ let cmdline_actions = Exact "-S", Set option_S; Exact "-o", String(fun s -> option_o := Some s); Prefix "-o", Self (fun s -> let s = String.sub s 2 ((String.length s) - 2) in - option_o := Some s); -(* Preprocessing options *) - Exact "-I", String(fun s -> prepro_options := s :: "-I" :: !prepro_options; - assembler_options := s :: "-I" :: !assembler_options); - Prefix "-I", Self(fun s -> prepro_options := s :: !prepro_options; - assembler_options := s :: !assembler_options); - Exact "-D", String(fun s -> prepro_options := s :: "-D" :: !prepro_options); - Prefix "-D", Self(fun s -> prepro_options := s :: !prepro_options); - Exact "-U", String(fun s -> prepro_options := s :: "-U" :: !prepro_options); - Prefix "-U", Self(fun s -> prepro_options := s :: !prepro_options); - Prefix "-Wp,", Self (fun s -> - prepro_options := List.rev_append (explode_comma_option s) !prepro_options); - Exact "-Xpreprocessor", String (fun s -> - prepro_options := s :: !prepro_options); - Exact "-include", String (fun s -> prepro_options := s :: "-include" :: !prepro_options); - Exact "-M", Self gnu_prepro_opt_e; - Exact "-MM", Self gnu_prepro_opt_e; - Exact "-MF", String (gnu_prepro_opt_key "-MF"); - Exact "-MG", Self gnu_prepro_opt; - Exact "-MP", Self gnu_prepro_opt; - Exact "-MT", String (gnu_prepro_opt_key "-MT"); - Exact "-MQ", String (gnu_prepro_opt_key "-MQ"); - Exact "-nostdinc", Self (fun s -> gnu_prepro_opt s; use_standard_headers := false); - Exact "-imacros", String (gnu_prepro_opt_key "-imacros"); - Exact "-idirafter", String (gnu_prepro_opt_key "-idirafter"); - Exact "-isystem", String (gnu_prepro_opt_key "-isystem"); - Exact "-iquote", String (gnu_prepro_opt_key "-iquore"); - Exact "-P", Self gnu_prepro_opt; - Exact "-C", Self gnu_prepro_opt; - Exact "-CC", Self gnu_prepro_opt; + option_o := Some s);] + (* Preprocessing options *) + @ prepro_actions @ (* Language support options -- more below *) - Exact "-fall", Self (fun _ -> set_all language_support_options); + [ Exact "-fall", Self (fun _ -> set_all language_support_options); Exact "-fnone", Self (fun _ -> unset_all language_support_options); (* Debugging options *) Exact "-g", Self (fun s -> option_g := true; |