Added be arch reflection/backend support infrastructure.

ir/be/Makefile.in

@@ -23,7 +23,7 @@ SOURCES += 	Makefile.in besched.h belistsched.h belistsched.c \
 	beutil.h bemain.c besched.c bemain.c belive.c belive.h benumb.h \
 	benumb_t.h benumb.c bechordal.c bera.c beutil.c phistat.c \
 	bephiopt.c bephicoal.c bera.h bechordalspill.c \
-	beasm_dump_globals.c beasm_asm_gnu.c
+	beasm_dump_globals.c beasm_asm_gnu.c bearch.h bearch.c
 
 include $(topdir)/MakeRules
 

ir/be/bearch.c

+/**
+ * Processor architecture specification.
+ * @author Sebastian Hack
+ * @date 11.2.2005
+ *
+ * $Id$
+ */
+
+#include "bearch_t.h"
+
+#include "firm_config.h"
+#include "set.h"
+
+#include "entity.h"
+#include "ircons_t.h"
+
+#if 1 /* HAVE_ALLOCA_H */
+#include <alloca.h>
+#endif /* HAVE_ALLOCA_H */
+
+#define INIT_HEADER(tgt, kind_suffix, a_isa, str) \
+	do { \
+		arch_header_t *h = (arch_header_t *) (tgt); \
+		memset(tgt, 0, sizeof(*(tgt))); \
+		h->kind = arch_kind_ ## kind_suffix; \
+		h->name = new_id_from_str(str); \
+		h->isa = a_isa; \
+	} while(0)
+
+static INLINE int hash_header(const arch_header_t *header)
+{
+	int res = HASH_PTR(header->isa);
+	res = 37 * res + HASH_STR(header->name, strlen(header->name));
+	res = 37 * res + header->kind;
+	return res;
+}
+
+static int cmp_header(const void *a, const void *b, size_t size)
+{
+	const arch_header_t *h1 = a;
+	const arch_header_t *h2 = b;
+
+	return !(h1->kind == h2->kind && strcmp(h1->name, h2->name) == 0);
+}
+
+static set *arch_data = NULL;
+
+static set *get_arch_data(void)
+{
+	if(!arch_data)
+		arch_data = new_set(cmp_header, 256);
+
+	return arch_data;
+}
+
+typedef struct _obj_info_t {
+	const char *name;
+	int listed_in_isa;
+	size_t size;
+} obj_info_t;
+
+static const obj_info_t obj_info[] = {
+#define ARCH_OBJ(name,listed_in_isa)		{ #name, listed_in_isa, sizeof(arch_ ## name ## _t) },
+#include "bearch_obj.def"
+#undef ARCH_OBJ
+	{ 0 }
+};
+
+/**
+ * Insert an arch object to the global arch obj storage.
+ *
+ * If the object has already been created there, nothing is done and
+ * the old object is created.
+ *
+ * @param kind The kind of the arch object.
+ * @param isa The isa the object belongs to or NULL if it is the isa
+ * itself.
+ * @param name The name of the object.
+ * @param was_new A pointer to an int where 1/0 is stored if the
+ * object was created or already present. If NULL, it is simply ignored.
+ * @return A pointer to the object.
+ */
+static INLINE void *_arch_data_insert(arch_kind_t kind, arch_isa_t *isa,
+		const char *name, size_t size, int *was_new)
+{
+	const obj_info_t *info = &obj_info[kind];
+	arch_header_t *data = alloca(size);
+	arch_header_t *res = NULL;
+
+	memset(data, 0, size);
+	data->kind = kind;
+	data->isa = isa;
+	data->name = get_id_str(new_id_from_str(name));
+	data->is_new = 1;
+
+	res = set_insert(get_arch_data(), data, size, hash_header(data));
+
+	/* If the object is newly created and thus not yet present
+	 * in the set, add it to the isa */
+	if(res->is_new) {
+
+		/*
+		 * The inserted object was no isa, list it in the isa if this is
+		 * desired.
+		 */
+		if(isa && info->listed_in_isa)
+			list_add(&res->list, &isa->heads[kind]);
+
+		/* The inserted object is an isa, so initialize all its list heads. */
+		else {
+			int i;
+			arch_isa_t *isa = (arch_isa_t *) res;
+
+			for(i = 0; i < arch_kind_last; ++i)
+				INIT_LIST_HEAD(&isa->heads[i]);
+		}
+	}
+
+	/*
+	 * If the caller wants to know, of the object was newly created,
+	 * give it to him.
+	 */
+	if(was_new)
+		*was_new = res->is_new;
+
+	/* Mark the object as NOT new. */
+	res->is_new = 0;
+
+	return res;
+}
+
+#define arch_data_insert(type_suffix, isa, name, was_new) \
+	_arch_data_insert(arch_kind_ ## type_suffix, isa, name, sizeof(arch_ ## type_suffix ## _t), was_new)
+
+static INLINE void *_arch_data_find(arch_kind_t kind, const arch_isa_t *isa, const char *name)
+{
+	arch_header_t header;
+
+	memset(&header, 0, sizeof(header));
+	header.kind = kind;
+	header.isa = (arch_isa_t *) isa;
+	header.name = name;
+
+	return set_find(get_arch_data(), &header, sizeof(header), hash_header(&header));
+}
+
+#define arch_data_find(type_suffix, isa, name) \
+	_arch_data_find(arch_kind_ ## type_suffix, isa, name)
+
+arch_isa_t *arch_add_isa(const char *name)
+{
+	return arch_data_insert(isa, NULL, name, NULL);
+}
+
+arch_register_class_t *arch_add_register_class(arch_isa_t *isa, const char *name, int n_regs)
+{
+	arch_register_class_t *cls =
+		_arch_data_insert(arch_kind_register_class, isa, name,
+				sizeof(arch_register_class_t) + n_regs * sizeof(arch_register_t *), NULL);
+
+	cls->n_regs = n_regs;
+
+	return cls;
+}
+
+arch_register_t *arch_add_register(arch_register_class_t *cls, int index, const char *name)
+{
+	arch_register_t *reg = NULL;
+
+	assert(index >= 0 && index < cls->n_regs);
+	reg = _arch_data_insert(arch_kind_register, arch_obj_get_isa(cls), name,
+			sizeof(arch_register_t), NULL);
+	cls->regs[index] = reg;
+
+	reg->index = index;
+	reg->reg_class = cls;
+	reg->flags = arch_register_flag_none;
+
+	return reg;
+}
+
+arch_immediate_t *arch_add_immediate(arch_isa_t *isa, const char *name, ir_mode *mode)
+{
+	arch_immediate_t *imm = arch_data_insert(immediate, isa, name, NULL);
+	imm->mode = mode;
+	return imm;
+}
+
+static const size_t operand_sizes[] = {
+	0,
+	0,
+	sizeof(entity *),
+	sizeof(arch_register_t *),
+	sizeof(tarval *)
+};
+
+arch_insn_format_t *arch_add_insn_format(arch_isa_t *isa, const char *name, int n_in, int n_out)
+{
+	int i;
+
+	arch_insn_format_t *fmt =
+		_arch_data_insert(arch_kind_insn_format, isa, name,
+				sizeof(arch_insn_format_t) + (n_in + n_out) * sizeof(arch_operand_type_t), NULL);
+
+	fmt->n_in = n_in;
+	fmt->n_out = n_out;
+	fmt->irn_data_size = 0;
+
+	/*
+	 * Compute the number of bytes which must be extra allocated if this
+	 * opcode is instantiated.
+	 */
+	for(i = 0; i < fmt->n_in; ++i) {
+		arch_operand_t *op = arch_get_in_operand(fmt, i);
+		op->offset_in_irn_data = fmt->irn_data_size;
+		fmt->irn_data_size += operand_sizes[op->type];
+	}
+
+	if(fmt->n_out == 1) {
+		arch_operand_t *op = arch_get_in_operand(fmt, i);
+		op->offset_in_irn_data = fmt->irn_data_size;
+		fmt->irn_data_size += operand_sizes[op->type];
+	}
+
+	return fmt;
+}
+
+arch_insn_t *arch_add_insn(arch_insn_format_t *fmt, const char *name)
+{
+	/* Insert the insn into the isa. */
+	arch_insn_t *insn = arch_data_insert(insn, arch_obj_get_isa(fmt), name, NULL);
+
+	insn->format = fmt;
+	insn->op = new_ir_op(get_next_ir_opcode(), name, op_pin_state_pinned, 0,
+			oparity_dynamic, 0, sizeof(arch_irn_data_t) + fmt->irn_data_size);
+
+	return insn;
+}
+
+arch_insn_format_t *arch_find_insn_format(arch_isa_t *isa, const char *name)
+{
+	return arch_data_find(insn_format, isa, name);
+}
+
+arch_isa_t *arch_find_isa(const char *name)
+{
+	return arch_data_find(isa, NULL, name);
+}
+
+arch_register_class_t *arch_find_register_class_t(arch_isa_t *isa, const char *name)
+{
+	return arch_data_find(register_class, isa, name);
+}
+
+arch_register_set_t *arch_get_register_set_for_class(arch_register_class_t *cls)
+{
+	return _arch_get_register_set_for_class(cls);
+}
+
+ir_node *arch_new_node(const arch_insn_t *insn, ir_graph *irg, ir_node *block,
+		ir_mode *mode, int arity, ir_node **in)
+{
+	ir_node *irn = new_ir_node(NULL, irg, block, insn->op, mode, arity, in);
+	arch_irn_data_t *data = (void *) &irn->attr;
+
+	data->magic = ARCH_IRN_FOURCC;
+	data->insn = insn;
+
+	return irn;
+}
+
+ir_node *arch_new_node_bare(const arch_insn_t *insn, ir_graph *irg, int arity)
+{
+	int i;
+	ir_node **in = alloca(sizeof(in[0]) * arity);
+
+	for(i = 0; i < arity; ++i)
+		in[i] = new_Unknown(mode_Is);
+
+	return arch_new_node(insn, irg, new_Unknown(mode_BB), mode_Is, arity, in);
+}

ir/be/bearch.h

+
+#ifndef _FIRM_BEARCH_H
+#define _FIRM_BEARCH_H
+
+#include "bitset.h"
+
+/*
+ * Define the types of the arch facility.
+ * All arch object names are stored in bearch_obj.def
+ */
+#define ARCH_OBJ(x,list) typedef struct _arch_ ## x ## _t arch_ ## x ## _t;
+#include "bearch_obj.def"
+#undef ARCH_OBJ
+
+/**
+ * A callback to determine the set of valid registers.
+ *
+ * @param irn 				The node which represents an instance of the instruction.
+ * @param pos 				The number of the insn's operand to consider.
+ * @param valid_regs 	A bitset where all valid registers are put.
+ */
+typedef void (arch_register_callback_t)(ir_node *irn, int pos, bitset_t *valid_regs);
+
+
+/**
+ * Add a new instruction set architecture.
+ * @param name The name of the isa.
+ * @return The isa object.
+ */
+arch_isa_t *arch_add_isa(const char *name);
+
+/**
+ * Add a register class to the isa.
+ * @param isa The isa to add the reg class to.
+ * @param name The name of the register class.
+ * @param n_regs The number of registers in that class.
+ * @param mode The mode of the registers in that class.
+ */
+arch_register_class_t *arch_add_register_class(arch_isa_t *isa, const char *name, int n_regs);
+
+/**
+ * Add a register to a register class.
+ * @param cls The register class.
+ * @param index The index of the register (its number within the
+ * class).
+ * @param name The name of the register.
+ * @return The register.
+ */
+arch_register_t *arch_add_register(arch_register_class_t *cls, int index, const char *name);
+
+/**
+ * Add an immediate to the instruction set architecture.
+ * @param isa The isa.
+ * @param name The name of the immediate.
+ * @param mode The mode of the immediate.
+ * @return The immediate.
+ */
+arch_immediate_t *arch_add_immediate(arch_isa_t *isa, const char *name, ir_mode *mode);
+
+/**
+ * Add an instruction format to an isa.
+ * @param isa The isa.
+ * @param name The name of the instruction format.
+ * @param n_in The number of in operands.
+ * @param n_out The number of out operands.
+ * @return The format.
+ */
+arch_insn_format_t *arch_add_insn_format(arch_isa_t *isa, const char *name, int n_in, int n_out);
+
+/**
+ * Add a register set as an operand type.
+ * @param fmt The instruction format whose operand is to be set.
+ * @param pos The position of the operand. Note that input operands are
+ * numbered from 0 to n and output operands from -1 to -m.
+ * @param set The register set.
+ * @return The corresponding operand type.
+ */
+arch_operand_t *arch_add_operand_register_set(arch_insn_format_t *fmt,
+		int pos, const arch_register_set_t *set);
+
+arch_operand_t *arch_add_operand_callback(arch_insn_format_t *fmt,
+		int pos, arch_register_callback_t *cb);
+
+arch_operand_t *arch_add_operand_immediate(arch_insn_format_t *fmt,
+		int pos, const arch_immediate_t *imm);
+
+/**
+ * Add an instruction to the isa.
+ * @param fmt The instructon format.
+ * @param name The name of the instruction.
+ */
+arch_insn_t *arch_add_insn(arch_insn_format_t *fmt, const char *name);
+
+
+/**
+ * Find an instruction format.
+ * @param isa The isa.
+ * @param name The name of the instruction format.
+ * @return The instruction format, if it was added before, or NULL if it
+ * is unknown.
+ */
+arch_insn_format_t *arch_find_insn_format(arch_isa_t *isa, const char *name);
+
+/**
+ * Find an isa.
+ * @param name The name of the isa.
+ * @return The isa if it has been added, or NULl if it is unknwon.
+ */
+arch_isa_t *arch_find_isa(const char *name);
+
+/**
+ * Find a register class of an isa.
+ * @param isa The isa.
+ * @param name The name of the register class.
+ * @return The register class, if it has been added, NULL if it is
+ * unknown.
+ */
+arch_register_class_t *arch_find_register_class(arch_isa_t *isa, const char *name);
+
+/**
+ * Get the register set for a register class.
+ * Each register class possesses a set containing all registers known in
+ * the class.
+ * @param cls The class.
+ * @return The register set for the register class.
+ */
+arch_register_set_t *arch_get_register_set_for_class(arch_register_class_t *cls);
+
+
+#endif

ir/be/bearch_obj.def

+/*
+	 The fields have following meaning:
+
+	 1) Name of the object. This used to ## it to some pre- or suffix.
+	 2) Boolean flag. If 1, the object shall be listed in a list whose
+	 		head is in the isa. This is useful, since we can generically
+			create lists of register classes, formats and so on.
+
+*/
+
+ARCH_OBJ(enum,						1)
+ARCH_OBJ(enum_member,			0)
+ARCH_OBJ(register,				0)
+ARCH_OBJ(register_class,	1)
+ARCH_OBJ(register_set,		1)
+ARCH_OBJ(immediate,				0)
+ARCH_OBJ(operand,					0)
+ARCH_OBJ(insn_format,			1)
+ARCH_OBJ(insn,						0)
+ARCH_OBJ(isa,							0)

ir/be/bearch_t.h

+
+#ifndef _FIRM_BEARCH_T_H
+#define _FIRM_BEARCH_T_H
+
+#include "firm_config.h"
+
+#include "irop_t.h"
+#include "irnode_t.h"
+#include "irmode_t.h"
+
+#include "hashptr.h"
+#include "fourcc.h"
+#include "set.h"
+#include "list.h"
+#include "ident.h"
+
+#include "bearch.h"
+
+#define ARCH_IRN_FOURCC		FOURCC('A', 'R', 'C', 'H')
+
+/**
+ * Flags for registers.
+ */
+enum {
+
+	/**
+	 * The register is invariant concerning writes.
+	 * Examples are the 0 registers in RISC architectures.
+	 */
+	REG_WRITE_INVARIAT 				= 1
+
+} arch_register_flags_t;
+
+typedef enum {
+#define ARCH_OBJ(x,list) 	arch_kind_##x,
+#include "bearch_obj.def"
+#undef ARCH_OBJ
+	arch_kind_last
+} arch_kind_t;
+
+/**
+ * A header which each of the arch structs should posess.
+ */
+typedef struct {
+	arch_kind_t kind;
+	arch_isa_t *isa;
+	const char *name;
+	struct list_head list;
+	unsigned is_new : 1;
+} arch_header_t;
+
+
+/**
+ * Get the architecture an arch object belongs to.
+ * @param obj The object.
+ * @return The architecture it belongs to.
+ */
+static INLINE arch_isa_t *arch_obj_get_isa(const void *obj)
+{
+	return ((const arch_header_t *) obj)->isa;
+}
+
+typedef enum _arch_register_flag_t {
+	arch_register_flag_none,
+	arch_register_flag_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_flag_callee_saved,						/**< The register must be saved by the called function,
+																								it thus survives a function call. */
+	arch_register_flag_ignore										/**< Do not consider this register when allocating. */
+} arch_register_flag_t;
+
+/**
+ * A register.
+ */
+struct _arch_register_t {
+	arch_header_t header;
+	int index;																/**< The index of the register in the class. */
+	const arch_register_class_t *reg_class;		/**< The class the register belongs to. */
+	arch_register_flag_t flags;								/**< Flags describing several properties of
+																							the register. */
+};
+
+/**
+ * A (sub-) set of registers.
+ */
+struct _arch_register_set_t {
+	arch_header_t header;
+	const struct _arch_register_class_t *reg_class;		/**< The register class for this set. */
+	unsigned comprises_full_class : 1;								/**< True, if all registers of the class
+																											are contained in this set. */
+	int regs[1];																			/**< 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];
+}
+
+
+/**
+ * A class of registers.
+ * Like general purpose or floating point.
+ */
+struct _arch_register_class_t {
+	arch_header_t header;
+	struct list_head list;		/**< list head to list up in the list of all
+															register classes in an isa. */
+	arch_register_set_t *set; /**< A register set containing all registers
+															in this class. */
+	int n_regs;								/**< Number of registers in this class. */
+	arch_register_t *regs[1]; /**< The array of registers. */
+};
+
+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];
+}
+
+/**
+ * Get the register set for a register class.
+ * @param cls The register class.
+ * @return The set containing all registers in the class.
+ */
+static INLINE arch_register_set_t *_arch_get_register_set_for_class(const arch_register_class_t *cls)
+{
+	return cls->set;
+}
+
+/**
+ * An immediate.
+ */
+struct _arch_immediate_t {
+	arch_header_t header;
+	ir_mode *mode;						/**< The mode of the immediate. */
+};
+
+/**
+ * The member of an enum.
+ */
+struct _arch_enum_member_t {
+	arch_header_t header;			/**< The omnipresent header. */
+	arch_enum_t *enm;					/**< The enum, this member belongs to. */
+};
+
+/**
+ * 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.
+ */
+struct _arch_enum_t {
+	arch_header_t header;
+	int n_members;										/**< The number of members in this enum. */
+	arch_enum_member_t *members[1];		/**< The array of members. */
+};
+
+typedef enum _arch_operand_type_t {
+	arch_operand_type_ir = 0,
+	arch_operand_type_variadic,
+	arch_operand_type_symconst,
+	arch_operand_type_register_set,
+	arch_operand_type_immediate
+} arch_operand_type_t;
+
+
+
+/**
+ * The data for the different flavours of operand types.
+ */
+typedef union _arch_operand_data_t {
+	arch_register_callback_t *callback;				/**< The set of valid registers is determined
+																							by a callback function. */
+
+	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. */
+
+	const arch_immediate_t *imm;							/**< If the operand is an immediate
+																							operand, this describes the kind of
+																							immediate. */
+
+	const arch_enum_t *enm;										/**< Some enumeration value. */
+} arch_operand_data_t;