X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=d1f84e55215d276876b79cd8924ac02286b8e389;hb=39e27d1fe336c1238bfe4a7b614d103762e39ba2;hp=568d90c79905bb4c1635d530a61f55e03992e4cc;hpb=0b7c02c299246820d8ccdea4e9b4e21774fc90fc;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index 568d90c79..d1f84e552 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -1,46 +1,52 @@ - #ifndef _FIRM_BEARCH_H #define _FIRM_BEARCH_H #include "firm_config.h" -#include "irop_t.h" -#include "irnode_t.h" -#include "irmode_t.h" +#ifdef WITH_LIBCORE +#include +#endif -#include "hashptr.h" -#include "fourcc.h" -#include "set.h" -#include "list.h" -#include "ident.h" +#include "firm_types.h" -#include "bearch.h" +#include "bitset.h" -#define ARCH_OBJ(name,x) typedef struct _arch_ ## name ## _t arch_ ## name ## _t; -#include "bearch_obj.def" -#undef ARCH_OBJ +#include "belistsched.h" +#include "beabi_t.h" +#include "bearch_t.h" +#include "be_t.h" -struct _bitset_t; +struct _be_node_factory_t; typedef enum _arch_register_type_t { - arch_register_type_none = 0, - arch_register_type_write_invariant, - arch_register_type_caller_saved, /**< The register must be saved by the caller - upon a function call. It thus can be overwritten - in the called function. */ - arch_register_type_callee_saved, /**< The register must be saved by the called function, - it thus survives a function call. */ - arch_register_type_ignore /**< Do not consider this register when allocating. */ + arch_register_type_none = 0, + arch_register_type_caller_save = 1, /**< The register must be saved by the caller + upon a function call. It thus can be overwritten + in the called function. */ + arch_register_type_callee_save = 2, /**< The register must be saved by the caller + upon a function call. It thus can be overwritten + in the called function. */ + arch_register_type_ignore = 4, /**< Do not consider this register when allocating. */ } arch_register_type_t; +/** + * Convenience macro to check for register type. + * @param req A pointer to register. + * @param kind The kind of type to check for (see arch_register_type_t). + * @return 1, If register is of given kind, 0 if not. + */ +#define arch_register_type_is(reg, kind) \ + (((reg)->type & arch_register_type_ ## kind) != 0) + /** * A register. */ struct _arch_register_t { const char *name; /**< The name of the register. */ - const arch_register_class_t *reg_class; /**< The class the register belongs to. */ - int index; /**< The index of the register in the class. */ - arch_register_type_t type; /**< The type of the register. */ + const arch_register_class_t *reg_class; /**< The class the register belongs to. */ + int index; /**< The index of the register in the class. */ + arch_register_type_t type; /**< The type of the register. */ + void *data; /**< Custom data. */ }; static INLINE const arch_register_class_t * @@ -56,141 +62,547 @@ static INLINE int _arch_register_get_index(const arch_register_t *reg) #define arch_register_get_class(reg) _arch_register_get_class(reg) #define arch_register_get_index(reg) _arch_register_get_index(reg) - -/** - * A (sub-) set of registers. - */ -struct _arch_register_set_t { - const struct _arch_register_class_t *reg_class; /**< The register class for this set. */ - int *regs; /**< An array containing 0/1 at place i - whether the register with index i is - in the set or not. */ -}; - -static INLINE int _arch_register_in_set(const arch_register_set_t *set, - const arch_register_t *reg) -{ - if(reg->reg_class != set->reg_class) - return 0; - - return set->regs[reg->index]; -} - +#define arch_register_get_name(reg) ((reg)->name) /** * A class of registers. * Like general purpose or floating point. */ struct _arch_register_class_t { - const char *name; /**< The name of the register. */ - arch_register_set_t *set; /**< A register set containing all registers - in this class. */ - int n_regs; /**< Number of registers in this class. */ - const arch_register_t *regs; /**< The array of registers. */ + const char *name; /**< The name of the register class. */ + int n_regs; /**< Number of registers in this class. */ + ir_mode *mode; /**< The mode of the register class. */ + const arch_register_t *regs; /**< The array of registers. */ }; +/** return the number of registers in this register class */ #define arch_register_class_n_regs(cls) ((cls)->n_regs) +/** return the largest mode of this register class */ +#define arch_register_class_mode(cls) ((cls)->mode) + +/** + * Put all registers in a class into a bitset. + * @param cls The class. + * @param bs The bitset. May be NULL. + * @return The number of registers in the class. + */ +extern int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs); + static INLINE const arch_register_t * _arch_register_for_index(const arch_register_class_t *cls, int idx) { - assert(0 <= idx && idx < cls->n_regs); - return &cls->regs[idx]; + assert(0 <= idx && idx < cls->n_regs); + return &cls->regs[idx]; } #define arch_register_for_index(cls, idx) \ _arch_register_for_index(cls, idx) +typedef enum _arch_operand_type_t { + arch_operand_type_invalid, + arch_operand_type_memory, + arch_operand_type_register, + arch_operand_type_immediate, + arch_operand_type_symconst, + arch_operand_type_last +} arch_operand_type_t; + /** - * Get the register set for a register class. - * @param cls The register class. - * @return The set containing all registers in the class. + * Different types of register allocation requirements. */ -#define arch_get_register_set_for_class(cls) ((cls)->set) +typedef enum _arch_register_req_type_t { + arch_register_req_type_none = 0, /**< No register requirement. */ + + arch_register_req_type_normal = 1, /**< All registers in the class + are allowed. */ + + arch_register_req_type_limited = 2, /**< Only a real subset of + the class is allowed. */ + + arch_register_req_type_should_be_same = 4, /**< The register should be equal + another one at the node. */ + + arch_register_req_type_should_be_different = 8, /**< The register must be unequal + to some other at the node. */ + + arch_register_req_type_should_be_different_from_all = 16, /**< The register must be different from + all in's at the node */ +} arch_register_req_type_t; /** - * An immediate. + * Convenience macro to check for set constraints. + * @param req A pointer to register requirements. + * @param kind The kind of constraint to check for (see arch_register_req_type_t). + * @return 1, If the kind of constraint is present, 0 if not. */ -struct _arch_immediate_t { - const char *name; /**< The name of the immediate. */ - ir_mode *mode; /**< The mode of the immediate. */ -}; +#define arch_register_req_is(req, kind) \ + (((req)->type & (arch_register_req_type_ ## kind)) != 0) + +/** + * Expresses requirements to register allocation for an operand. + */ +typedef struct _arch_register_req_t { + arch_register_req_type_t type; /**< The type of the constraint. */ + const arch_register_class_t *cls; /**< The register class this constraint belongs to. */ + + void (*limited)(void *limited_env, bitset_t *bs); + /**< In case of the 'limited' + constraint, this function + must put all allowable + registers in the bitset and + return the number of registers + in the bitset. */ + + void *limited_env; /**< This must passed to limited. */ + + ir_node *other_same; /**< The other which shall have the same reg + as this one. (for case should_be_same). */ + + ir_node *other_different; /**< The other node from which this one's register + must be different (case must_be_different). */ +} arch_register_req_t; + +/** + * Format a register requirements information into a string. + * @param buf The string where to put it to. + * @param len The size of @p buf. + * @param req The requirements structure to format. + * @return A pointer to buf. + */ +extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req); + + +/** + * Certain node classes which are relevant for the register allocator. + */ +typedef enum _arch_irn_class_t { + arch_irn_class_normal = 1 << 0, + arch_irn_class_spill = 1 << 1, + arch_irn_class_reload = 1 << 2, + arch_irn_class_copy = 1 << 3, + arch_irn_class_perm = 1 << 4, + arch_irn_class_branch = 1 << 5, + arch_irn_class_call = 1 << 6, + arch_irn_class_const = 1 << 7, + arch_irn_class_load = 1 << 8, + arch_irn_class_store = 1 << 9, + arch_irn_class_stackparam = 1 << 10, +} arch_irn_class_t; + +/** + * An inverse operation returned by the backend + */ +typedef struct _arch_inverse_t { + int n; /**< count of nodes returned in nodes array */ + int costs; /**< costs of this remat */ + + /**< nodes for this inverse operation. shall be in + * schedule order. last element is the target value + */ + ir_node **nodes; +} arch_inverse_t; + +/** + * Some flags describing a node in more detail. + */ +typedef enum _arch_irn_flags_t { + arch_irn_flags_none = 0, /**< Node flags. */ + arch_irn_flags_dont_spill = 1, /**< This must not be spilled. */ + arch_irn_flags_rematerializable = 2, /**< This should be replicated instead of spilled/reloaded. */ + arch_irn_flags_ignore = 4, /**< Ignore node during register allocation. */ + arch_irn_flags_modify_sp = 8, /**< I modify the stack pointer. */ + arch_irn_flags_last = arch_irn_flags_modify_sp +} arch_irn_flags_t; /** - * The member of an enum. + * Get the string representation of a flag. + * This functions does not handle or'ed bitmasks of flags. + * @param flag The flag. + * @return The flag as a string. */ -struct _arch_enum_member_t { - arch_enum_t *enm; /**< The enum, this member belongs to. */ +extern const char *arch_irn_flag_str(arch_irn_flags_t flag); + +struct _arch_irn_ops_if_t { + + /** + * Get the register requirements for a given operand. + * @param self The self pointer. + * @param irn The node. + * @param pos The operand's position + * (-1 for the result of the node, 0..n for the input + * operands). + * @return The register requirements for the selected operand. + * The pointer returned is never NULL. + */ + const arch_register_req_t *(*get_irn_reg_req)(const void *self, + arch_register_req_t *req, const ir_node *irn, int pos); + + /** + * Set the register for an output operand. + * @param irn The node. + * @param reg The register allocated to that operand. + * @note If the operand is not a register operand, + * the call is ignored. + */ + void (*set_irn_reg)(const void *self, ir_node *irn, const arch_register_t *reg); + + /** + * Get the register allocated for an output operand. + * @param irn The node. + * @return The register allocated at that operand. NULL, if + * the operand was no register operand or + * @c arch_register_invalid, if no register has yet been + * allocated for this node. + */ + const arch_register_t *(*get_irn_reg)(const void *self, const ir_node *irn); + + /** + * Classify the node. + * @param irn The node. + * @return A classification. + */ + arch_irn_class_t (*classify)(const void *self, const ir_node *irn); + + /** + * Get the flags of a node. + * @param self The irn ops themselves. + * @param irn The node. + * @return A set of flags. + */ + arch_irn_flags_t (*get_flags)(const void *self, const ir_node *irn); + + /** + * Get the entity on the stack frame this node depends on. + * @param self The this pointer. + * @param irn The node in question. + * @return The entity on the stack frame or NULL, if the node does not has a stack frame entity. + */ + entity *(*get_frame_entity)(const void *self, const ir_node *irn); + + /** + * Set the entity on the stack frame this node depends on. + * @param self The this pointer. + * @param irn The node in question. + * @param ent The entity to set + */ + void (*set_frame_entity)(const void *self, ir_node *irn, entity *ent); + + /** + * Set the offset of a node carrying an entity on the stack frame. + * @param self The this pointer. + * @param irn The node. + * @param offset The offset of the node's stack frame entity. + */ + void (*set_frame_offset)(const void *self, ir_node *irn, int offset); + + /** + * Returns the delta of the stackpointer for nodes that increment or + * decrement the stackpointer with a constant value. (push, pop + * nodes on most architectures). + * A positive value stands for an expanding stack area, a negative value for + * a shrinking one. + * + * @param self The this pointer + * @param irn The node + * @return 0 if the stackpointer is not modified with a constant + * value, otherwise the increment/decrement value + */ + int (*get_sp_bias)(const void *self, const ir_node *irn); + + /** + * Returns an inverse operation which yields the i-th argument + * of the given node as result. + * + * @param self The this pointer. + * @param irn The original operation + * @param i Index of the argument we want the inverse operation to yield + * @param inverse struct to be filled with the resulting inverse op + * @param obstack The obstack to use for allocation of the returned nodes array + * @return The inverse operation or NULL if operation invertible + */ + arch_inverse_t *(*get_inverse)(const void *self, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack); + + /** + * Get the estimated cycle count for @p irn. + * + * @param self The this pointer. + * @param irn The node. + * + * @return The estimated cycle count for this operation + */ + int (*get_op_estimated_cost)(const void *self, const ir_node *irn); + + /** + * Asks the backend whether operand @p i of @p irn can be loaded form memory internally + * + * @param self The this pointer. + * @param irn The node. + * @param i Index of the argument we would like to know whether @p irn can load it form memory internally + * + * @return nonzero if argument can be loaded or zero otherwise + */ + int (*possible_memory_operand)(const void *self, const ir_node *irn, unsigned int i); + + /** + * Ask the backend to assimilate @p reload of operand @p i into @p irn. + * + * @param self The this pointer. + * @param irn The node. + * @param spill The spill. + * @param i The position of the reload. + */ + void (*perform_memory_operand)(const void *self, ir_node *irn, ir_node *spill, unsigned int i); }; /** - * An enumeration operand type. - * - * Enumeration operand types can be used to describe the variants - * of an instruction, like giving the cases for a compare (gt, lt, - * eq, ...) some other special attributes of an instruction. + * irn_ops base class. */ -struct _arch_enum_t { - int n_members; /**< The number of members in this enum. */ - arch_enum_member_t *members[1]; /**< The array of members. */ +struct _arch_irn_ops_t { + const arch_irn_ops_if_t *impl; }; -typedef enum _arch_operand_type_t { -#define ARCH_OPERAND_TYPE(name,size_in_irn) arch_operand_type_ ## name, -#include "bearch_operand_types.def" -#undef ARCH_OPERAND_TYPE - arch_operand_type_last -} arch_operand_type_t; +extern const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn); + +extern void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int bias); + +extern entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn); +extern void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, entity *ent); +extern int arch_get_sp_bias(const arch_env_t *env, ir_node *irn); +extern int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn); +extern arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack); +extern int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i); +extern void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *spill, unsigned int i); + +/** + * Get the register requirements for a node. + * @param env The architecture environment. + * @param req A pointer to a requirements structure, where the data can + * be put into. + * @param irn The node. + * @param pos The position of the operand you're interested in. + * @return A pointer to the register requirements which may not + * neccessarily be equal to @p req. If NULL is returned, the + * operand was no register operand. + */ +extern const arch_register_req_t * +arch_get_register_req(const arch_env_t *env, arch_register_req_t *req, + const ir_node *irn, int pos); + +/** + * Check if an operand is a register operand. + * @param env The environment. + * @param irn The node. + * @param pos The position of the operand. + * @return 1, if the operand is significant for register allocation, 0 + * if not. + */ +extern int arch_is_register_operand(const arch_env_t *env, + const ir_node *irn, int pos); + +/** + * Get the number of allocatable registers concerning + * a register class for an operand of a node. + * @param env The environment. + * @param irn The node. + * @param pos The postition of the node's operand. + * @param bs The bitset all allocatable registers shall be put into. + * Note, that you can also pass NULL here. If you don't, + * make sure, the bitset is as large as the register class + * has registers. + * @return The amount of registers allocatable for that operand. + */ +extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs); + +/** + * Put all registers which shall not be ignored by the register + * allocator in a bit set. + * @param env The arch env. + * @param cls The register class to consider. + * @param bs The bit set to put the registers to. + */ +extern void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs); + +/** + * Return the number of registers in a register class which should not be + * ignored by the register allocator. + * @param env The architecture environment. + * @param cls The register class to consider + * @return The number of non-ignore registers in the register class + */ +extern int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls); + +/** + * Check, if a register is assignable to an operand of a node. + * @param env The architecture environment. + * @param irn The node. + * @param pos The position of the operand. + * @param reg The register. + * @return 1, if the register might be allocated to the operand 0 if not. + */ +extern int arch_reg_is_allocatable(const arch_env_t *env, + const ir_node *irn, int pos, const arch_register_t *reg); + +/** + * Get the register class of an operand of a node. + * @param env The architecture environment. + * @param irn The node. + * @param pos The position of the operand, -1 for the output. + * @return The register class of the operand or NULL, if + * operand is a non-register operand. + */ +extern const arch_register_class_t * +arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos); + +/** + * Get the register allocated at a certain output operand of a node. + * @param env The arch environment. + * @param irn The node. + * @return The register allocated for this operand + */ +extern const arch_register_t * +arch_get_irn_register(const arch_env_t *env, const ir_node *irn); + +/** + * Set the register for a certain output operand. + * @param env The architecture environment. + * @param irn The node. + * @param idx The index of the output operand. + * @param reg The register. + */ +extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn, + const arch_register_t *reg); + +/** + * Classify a node. + * @param env The architecture environment. + * @param irn The node. + * @return A classification of the node. + */ +extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn); +#define arch_irn_class_is(env, irn, irn_class) ((arch_irn_classify(env, irn) & arch_irn_class_ ## irn_class) != 0) /** - * The data for the different flavours of operand types. + * Get the flags of a node. + * @param env The architecture environment. + * @param irn The node. + * @return The flags. */ -typedef union _arch_operand_data_t { - const arch_register_set_t *set; /**< The set of valid registers is directly - given. Note, that if an insn has no constraints, - the set comprises all registers in the - register class. */ +extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn); + +#define arch_irn_is(env, irn, flag) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ ## flag) != 0) - const arch_immediate_t *imm; /**< If the operand is an immediate - operand, this describes the kind of - immediate. */ +#define arch_irn_has_reg_class(env, irn, pos, cls) \ + ((cls) == arch_get_irn_reg_class(env, irn, pos)) - const arch_enum_t *enm; /**< Some enumeration value. */ +#define arch_irn_consider_in_reg_alloc(env, cls, irn) \ + (arch_irn_has_reg_class(env, irn, -1, cls) && !arch_irn_is(env, irn, ignore)) + +/** + * Somebody who can be asked about IR nodes. + */ +struct _arch_irn_handler_t { - int same_as_pos; /**< 'Same as' position for equals. */ -} arch_operand_data_t; + /** + * Get the operations of an irn. + * @param self The handler from which the method is invoked. + * @param irn Some node. + * @return Operations for that irn. + */ + const void *(*get_irn_ops)(const arch_irn_handler_t *handler, + const ir_node *irn); +}; /** - * An operand to an instruction. + * The code generator interface. */ -struct _arch_operand_t { - arch_operand_type_t type; /**< The type of the operand. */ - arch_operand_data_t data; /**< The payload. */ +struct _arch_code_generator_if_t { + /** + * Initialize the code generator. + * @param birg A backend IRG session. + * @return A newly created code generator. + */ + void *(*init)(const be_irg_t *birg); + + /** + * Called before abi introduce. + */ + void (*before_abi)(void *self); + + /** + * Called, when the graph is being normalized. + */ + void (*prepare_graph)(void *self); + + /** + * Called before scheduling. + */ + void (*before_sched)(void *self); + + /** + * Called before register allocation. + */ + void (*before_ra)(void *self); + + /** + * Called after register allocation. + */ + void (*after_ra)(void *self); + + /** + * Called directly before done is called. This should be the last place + * where the irg is modified. + */ + void (*finish)(void *self); + + /** + * Called after everything happened. This call should emit the final + * assembly code but avoid changing the irg. + * The code generator must also be de-allocated here. + */ + void (*done)(void *self); }; /** - * An instruction format. + * helper macro: call function func from the code generator + * if it's implemented. */ -struct _arch_insn_format_t { - int n_in; /**< Number of in operands. */ - int n_out; /**< Number of out operands. */ +#define _arch_cg_call(cg, func) \ +do { \ + if((cg)->impl->func) \ + (cg)->impl->func(cg); \ +} while(0) + +#define arch_code_generator_before_abi(cg) _arch_cg_call(cg, before_abi) +#define arch_code_generator_prepare_graph(cg) _arch_cg_call(cg, prepare_graph) +#define arch_code_generator_before_sched(cg) _arch_cg_call(cg, before_sched) +#define arch_code_generator_before_ra(cg) _arch_cg_call(cg, before_ra) +#define arch_code_generator_after_ra(cg) _arch_cg_call(cg, after_ra) +#define arch_code_generator_finish(cg) _arch_cg_call(cg, finish) +#define arch_code_generator_done(cg) _arch_cg_call(cg, done) - arch_operand_t * const *in_operands; /**< In operands. */ - arch_operand_t * const *out_operands; /**< Out operands. */ +/** + * Code generator base class. + */ +struct _arch_code_generator_t { + const arch_code_generator_if_t *impl; }; /** - * An instruction. + * ISA base class. */ -struct _arch_insn_t { - const arch_insn_format_t *format; /**< The format of the instruction. */ - ir_op *op; /**< The firm opcode for this insn. */ +struct _arch_isa_t { + const arch_isa_if_t *impl; + const arch_register_t *sp; /** The stack pointer register. */ + const arch_register_t *bp; /** The base pointer register. */ + const int stack_dir; /** -1 for decreasing, 1 for increasing. */ }; -#define arch_insn_is_allocatable(insn,reg) \ - ((irn)->get_allocatable_regs(irn, cls, NULL) != 0) +#define arch_isa_stack_dir(isa) ((isa)->stack_dir) +#define arch_isa_sp(isa) ((isa)->sp) +#define arch_isa_bp(isa) ((isa)->bp) /** * Architecture interface. @@ -199,76 +611,144 @@ struct _arch_isa_if_t { /** * Initialize the isa interface. + * @param file_handle the file handle to write the output to + * @return a new isa instance */ - void (*init)(void); + void *(*init)(FILE *file_handle); + + /** + * Free the isa instance. + */ + void (*done)(void *self); /** * Get the the number of register classes in the isa. * @return The number of register classes. */ - int (*get_n_reg_class)(void); + int (*get_n_reg_class)(const void *self); /** * Get the i-th register class. * @param i The number of the register class. * @return The register class. */ - const arch_register_class_t *(*get_reg_class)(int i); + const arch_register_class_t *(*get_reg_class)(const void *self, int i); /** - * Put all registers of a given class which are allocatable to a - * certain node into a bitset. - * The bitset contains the indices of the registers concerning - * the register class @p cls. - * @param irn The node. - * @param cls The register class. - * @param bs The bitset. Can be NULL. - * @return The number of registers which are allocatable at this node. + * Get the register class which shall be used to store a value of a given mode. + * @param self The this pointer. + * @param mode The mode in question. + * @return A register class which can hold values of the given mode. */ - int (*get_allocatable_regs)(const ir_node *irn, - const arch_register_class_t *cls, struct _bitset_t *bs); + const arch_register_class_t *(*get_reg_class_for_mode)(const void *self, const ir_mode *mode); - int (*is_reg_allocatable)(const ir_node *irn, const arch_register_t *reg); + /** + * Get the ABI restrictions for procedure calls. + * @param self The this pointer. + * @param method_type The type of the method (procedure) in question. + * @param p The array of parameter locations to be filled. + */ + void (*get_call_abi)(const void *self, ir_type *method_type, be_abi_call_t *abi); /** - * Get the register class, the value of a node belongs to. - * @param irn The node. - * @return The register class of the registers which can hold the - * value of irn. If the node does not return a value, or possesses no - * suitable register class, NULL is returned. + * The irn handler for this architecture. + * The irn handler is registered by the Firm back end + * when the architecture is initialized. + * (May be NULL). */ - const arch_register_class_t *(*get_irn_reg_class)(const ir_node *irn); + const arch_irn_handler_t *(*get_irn_handler)(const void *self); + /** + * Get the code generator interface. + * @param self The this pointer. + * @return Some code generator interface. + */ + const arch_code_generator_if_t *(*get_code_generator_if)(void *self); + /** + * Get the list scheduler to use. + * @param self The isa object. + * @return The list scheduler selector. + */ + const list_sched_selector_t *(*get_list_sched_selector)(const void *self); /** - * Get an op for a name. - * @note This method may not be implemented. - * @param name The name of the op. - * @return The op with that name. + * Get the necessary alignment for storing a register of given class. + * @param self The isa object. + * @param cls The register class. + * @return The alignment in bytes. */ - ir_op *(*get_op_by_name)(const char *name); + int (*get_reg_class_alignment)(const void *self, const arch_register_class_t *cls); + + /** + * A "static" function, returns the frontend settings + * needed for this backend. + */ + const backend_params *(*get_params)(void); + +#ifdef WITH_LIBCORE + /** + * Register command line options for this backend. + * @param grp The root group. + */ + void (*register_options)(lc_opt_entry_t *grp); +#endif }; +#define arch_isa_get_n_reg_class(isa) ((isa)->impl->get_n_reg_class(isa)) +#define arch_isa_get_reg_class(isa,i) ((isa)->impl->get_reg_class(isa, i)) +#define arch_isa_get_irn_handler(isa) ((isa)->impl->get_irn_handler(isa)) +#define arch_isa_get_call_abi(isa,tp,abi) ((isa)->impl->get_call_abi((isa), (tp), (abi))) +#define arch_isa_get_reg_class_for_mode(isa,mode) ((isa)->impl->get_reg_class_for_mode((isa), (mode))) +#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator((isa), (irg))) +#define arch_isa_get_reg_class_alignment(isa, cls) ((isa)->impl->get_reg_class_alignment((isa), (cls))) + +#define ARCH_MAX_HANDLERS 8 + /** - * Check, if the value of a node can be stored in a - * specific register class. - * @param isa The isa. - * @param irn The node. - * @param cls The register class. - * @return 1, if the value can be stored in the register class, 0 if - * not. + * Environment for the architecture infrastructure. + * Keep this everywhere you're going. */ -#define arch_isa_irn_has_reg_class(isa, irn, cls) \ - ((isa)->get_irn_reg_class(irn) == (cls)) +struct _arch_env_t { + const struct _be_node_factory_t *node_factory; /**< The node factory for be nodes. */ + arch_isa_t *isa; /**< The isa about which everything is. */ + + arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS]; /**< The handlers are organized as + a stack. */ + + int handlers_tos; /**< The stack pointer of the handler + stack. */ +}; /** - * Check, if a register is allocatable for an irn. - * @param irn The node. - * @param reg The register. - * @return 1, if the register can be allocated to this node, 0 if not. + * Get the isa of an arch environment. + * @param env The environment. + * @return The isa with which the env was initialized with. + */ +#define arch_env_get_isa(env) ((env)->isa) + +/** + * Initialize the architecture environment struct. + * @param isa The isa which shall be put into the environment. + * @param file_handle The file handle + * @return The environment. */ -#define arch_isa_reg_is_allocatable(irn, reg) \ - ((isa)->is_reg_allocatable(irn, reg)) +extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa, FILE *file_handle); + +/** + * Add a node handler to the environment. + * @param env The environment. + * @param handler A node handler. + * @return The environment itself. + */ +extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler); + +/** + * Remove a node handler from the handler stack. + * @param env The architecture environment. + * @return The popped handler. + */ +extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env); + #endif /* _FIRM_BEARCH_H */