X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=include%2Flibfirm%2Fbe.h;h=4f4400391bf86fa7a242d75cd83b5846c2fa17f5;hb=b9a1bfdbce56c76bd4d5ff772963628523ecfc41;hp=103a626a29f1d8e1b857d63f6440922413ea70eb;hpb=6f37b3f5178996ef665bae4df2efac5aa5446c4a;p=libfirm diff --git a/include/libfirm/be.h b/include/libfirm/be.h index 103a626a2..4f4400391 100644 --- a/include/libfirm/be.h +++ b/include/libfirm/be.h @@ -21,7 +21,6 @@ * @file * @brief Generic backend types and interfaces. * @author Sebastian Hack - * @version $Id$ */ #ifndef FIRM_BE_MAIN_H #define FIRM_BE_MAIN_H @@ -32,19 +31,68 @@ #include "iroptimize.h" #include "begin.h" -typedef enum { - ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER = 0x0001, - ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP = 0x0002, - ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE = 0x0004, - ASM_CONSTRAINT_FLAG_NO_SUPPORT = 0x0008, - ASM_CONSTRAINT_FLAG_MODIFIER_WRITE = 0x0010, - ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE = 0x0020, - ASM_CONSTRAINT_FLAG_MODIFIER_READ = 0x0040, - ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ = 0x0080, - ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER = 0x0100, - ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE = 0x0200, - ASM_CONSTRAINT_FLAG_INVALID = 0x8000 +/** + * @defgroup be Code Generation + * + * Code Generation (backend) produces machine-code. + * @{ + */ + +/** + * flags categorizing assembler constraint specifications + */ +typedef enum asm_constraint_flags_t { + ASM_CONSTRAINT_FLAG_NONE = 0, /**< no constraints */ + /** input/output can be in a register */ + ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER = 1u << 0, + /** input/output can be read/written to/from a memory address */ + ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP = 1u << 1, + /** input can be encoded as an immediate number */ + ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE = 1u << 2, + /** the constraint is not supported yet by libFirm */ + ASM_CONSTRAINT_FLAG_NO_SUPPORT = 1u << 3, + /** The input is also written to */ + ASM_CONSTRAINT_FLAG_MODIFIER_WRITE = 1u << 4, + /** the input is not written to */ + ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE = 1u << 5, + /** the input is read */ + ASM_CONSTRAINT_FLAG_MODIFIER_READ = 1u << 6, + /** the input is not read */ + ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ = 1u << 7, + /** the value is modified before all inputs to the asm block + * are handled. */ + ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER = 1u << 8, + /** This operand and the following operand are commutative */ + ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE = 1u << 9, + /** invalid constraint (due to parse error) */ + ASM_CONSTRAINT_FLAG_INVALID = 1u << 10 } asm_constraint_flags_t; +ENUM_BITSET(asm_constraint_flags_t) + +/** Dwarf source language codes. */ +typedef enum { + DW_LANG_C89 = 0x0001, + DW_LANG_C = 0x0002, + DW_LANG_Ada83 = 0x0003, + DW_LANG_C_plus_plus = 0x0004, + DW_LANG_Cobol74 = 0x0005, + DW_LANG_Cobol85 = 0x0006, + DW_LANG_Fortran77 = 0x0007, + DW_LANG_Fortran90 = 0x0008, + DW_LANG_Pascal83 = 0x0009, + DW_LANG_Modula2 = 0x000a, + DW_LANG_Java = 0x000b, + DW_LANG_C99 = 0x000c, + DW_LANG_Ada95 = 0x000d, + DW_LANG_Fortran95 = 0x000e, + DW_LANG_PLI = 0x000f, + DW_LANG_ObjC = 0x0010, + DW_LANG_ObjC_plus_plus = 0x0011, + DW_LANG_UPC = 0x0012, + DW_LANG_D = 0x0013, + DW_LANG_Python = 0x0014, + DW_LANG_Go = 0x0016, +} dwarf_source_language; /** * Build a Trampoline for the closure. @@ -58,14 +106,6 @@ typedef enum { */ typedef ir_node *(create_trampoline_fkt)(ir_node *block, ir_node *mem, ir_node *trampoline, ir_node *env, ir_node *callee); -/** callback where the backend performs required lowering for the target - * architecture. Typical examples are transforming doubleword operations into - * sequences of word operations. The callback should be invoked before the - * frontend, because it is usually a good idea to perform other optimisations - * after the lowering - */ -typedef void (*lower_for_target_func)(void); - /** * This structure contains parameters that should be * propagated to the libFirm parameter set. @@ -75,9 +115,18 @@ typedef struct backend_params { unsigned support_inline_asm:1; /** If set, the backend supports Rotl nodes */ unsigned support_rotl:1; - - /** callback that performs lowerings required for target architecture */ - lower_for_target_func lower_for_target; + /** the backend uses big-endian byte ordering if set, else little endian */ + unsigned byte_order_big_endian:1; + /** whether the architecure can natively handle modulo shift modes. + * If this is true, then you can assume that shifting in modes with + * module_shift==machine_size (if mode size is <= machine_size) is efficient + */ + unsigned modulo_shift_efficient:1; + /** whether the architecure can natively handle modulo shift modes. + * If this is true, then you can assume that shifting without modulo shift + * is efficient + */ + unsigned non_modulo_shift_efficient:1; /** Settings for architecture dependent optimizations. */ const ir_settings_arch_dep_t *dep_param; @@ -85,12 +134,31 @@ typedef struct backend_params { /** Backend settings for if-conversion. */ arch_allow_ifconv_func allow_ifconv; + /** size of machine word in bits. This is usually the size of the general + * purpose integer/address registers. */ + unsigned machine_size; + /** * some backends like x87 can only do arithmetic in a specific float - * mode (but convert to/from other float modes). + * mode (load/store are still done in the "normal" float/double modes). */ ir_mode *mode_float_arithmetic; + /** + * type used for long long or NULL if none available. + */ + ir_type *type_long_long; + + /** + * type used for unsigned long long or NULL if none available + */ + ir_type *type_unsigned_long_long; + + /** + * type used for long double or NULL if none available. + */ + ir_type *type_long_double; + /** Size of the trampoline code. */ unsigned trampoline_size; @@ -105,23 +173,58 @@ typedef struct backend_params { } backend_params; /** - * Register the Firm backend command line options. + * Parse one backend argument. */ -FIRM_API void be_opt_register(void); +FIRM_API int be_parse_arg(const char *arg); /** - * Parse one backend argument. + * Returns 1 if the backend uses big-endian byte ordering + * and 0 for little-endian. */ -FIRM_API int be_parse_arg(const char *arg); +FIRM_API int be_is_big_endian(void); + +/** + * Returns size of machine words. This is usually the size + * of the general purpose integer registers. + */ +FIRM_API unsigned be_get_machine_size(void); /** - * Return the backend configuration parameter. + * Returns supported float arithmetic mode or NULL if mode_D and mode_F + * are supported natively. + * Some backends like x87 can only do arithmetic in a specific float + * mode (load/store are still done in the "normal" float/double modes). + */ +FIRM_API ir_mode *be_get_mode_float_arithmetic(void); + +/** Returns type used for long long or NULL if none available. */ +FIRM_API ir_type *be_get_type_long_long(void); + +/** Returns type used for unsigned long long or NULL if none available. */ +FIRM_API ir_type *be_get_type_unsigned_long_long(void); + +/** Returns type used for long double or NULL if none available. */ +FIRM_API ir_type *be_get_type_long_double(void); + +/** + * Returns the backend configuration parameter. * * @return libFirm configuration parameters for the selected * backend */ FIRM_API const backend_params *be_get_backend_param(void); +/** + * Lowers current program for the target architecture. + * This must be run once before using be_main. The idea here is that the backend + * can perform lowerings like doubleword-lowering, ABI adjustments or + * implementation of boolean values, if-conversion, with target specific + * settings. + * The resulting graph is still a "normal" firm-graph on which you can and + * should perform further architecture-neutral optimisations before be_main. + */ +FIRM_API void be_lower_for_target(void); + /** * Creates an ir_prog pass which performs lowerings necessary for the target * architecture. (Calling backend_params->lower_for_target) @@ -144,8 +247,18 @@ FIRM_API asm_constraint_flags_t be_parse_asm_constraints(const char *constraints */ FIRM_API int be_is_valid_clobber(const char *clobber); -typedef struct be_main_env_t be_main_env_t; -typedef struct be_options_t be_options_t; +/** + * Sets source language for dwarf debug information. + */ +FIRM_API void be_dwarf_set_source_language(dwarf_source_language language); + +/** + * Sets working directory of the compiler (or directory where the compiler + * searched for sources) for dwarf debug information. + */ +FIRM_API void be_dwarf_set_compilation_directory(const char *directory); + +/** @} */ #include "end.h"