/* statement.h Internal statements Copyright (C) 2011 Bill Currie Author: Bill Currie Date: 2011/01/18 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ #ifndef statement_h #define statement_h #include "QF/progs/pr_comp.h" typedef enum { op_def, op_value, op_label, op_temp, op_alias, op_nil, op_pseudo, } op_type_e; struct expr_s; typedef struct tempop_s { struct def_s *def; int offset; struct type_s *type; struct flowvar_s *flowvar; struct daglabel_s *daglabel; struct operand_s *alias; struct operand_s *alias_ops; int users; int flowaddr; ///< "address" of temp in flow analysis, != 0 } tempop_t; typedef struct pseudoop_s { struct pseudoop_s *next; const char *name; struct flowvar_s *flowvar; void (*uninitialized) (struct expr_s *expr, struct pseudoop_s *op); } pseudoop_t; typedef struct operand_s { struct operand_s *next; op_type_e op_type; struct type_s *type; ///< possibly override def's/nil's type int size; ///< for structures int width; ///< for SIMD selection struct expr_s *expr; ///< expression generating this operand void *return_addr; ///< who created this operand union { struct def_s *def; struct ex_value_s *value; struct ex_label_s *label; tempop_t tempop; struct operand_s *alias; pseudoop_t *pseudoop; }; } operand_t; /** Overall type of statement. Statement types are broken down into expressions (binary and unary, includes address and pointer dereferencing (read)), assignment, pointer assignment (write to dereference pointer), move (special case of assignment), pointer move (special case of pointer assignment), state, function related (call, rcall, return and done), and flow control (conditional branches, goto, jump (single pointer and jump table)). */ typedef enum { st_none, ///< not a (valid) statement. Used in dags. st_expr, ///< c = a op b; or c = op a; st_assign, ///< b = a st_ptrassign, ///< *b = a; or *(b + c) = a; st_move, ///< memcpy (c, a, b); c and a are direct def references st_ptrmove, ///< memcpy (c, a, b); c and a are pointers st_memset, ///< memset (c, a, b); c is direct def reference st_ptrmemset, ///< memset (c, a, b); c is pointer st_state, ///< state (a, b); or state (a, b, c) st_func, ///< call, rcall or return/done st_flow, ///< if/ifa/ifae/ifb/ifbe/ifnot or goto or jump/jumpb st_address, ///< lea } st_type_t; typedef struct statement_s { struct statement_s *next; st_type_t type; const char *opcode; operand_t *opa; operand_t *opb; operand_t *opc; struct expr_s *expr; ///< source expression for this statement int number; ///< number of this statement in function operand_t *use; ///< list of auxiliary operands used operand_t *def; ///< list of auxiliary operands defined operand_t *kill; ///< list of auxiliary operands killed } statement_t; typedef struct sblock_s { struct sblock_s *next; struct reloc_s *relocs; struct ex_label_s *labels; struct flownode_s *flownode;///< flow node for this block int offset; ///< offset of first statement of block int reachable; int number; ///< number of this block in flow graph statement_t *statements; statement_t **tail; } sblock_t; struct expr_s; struct type_s; struct dstring_s; extern const char * const op_type_names[]; extern const char * const st_type_names[]; const char *optype_str (op_type_e type) __attribute__((const)); operand_t *nil_operand (struct type_s *type, struct expr_s *expr); operand_t *def_operand (struct def_s *def, struct type_s *type, struct expr_s *expr); operand_t *return_operand (struct type_s *type, struct expr_s *expr); operand_t *value_operand (struct ex_value_s *value, struct expr_s *expr); int tempop_overlap (tempop_t *t1, tempop_t *t2) __attribute__((pure)); operand_t *temp_operand (struct type_s *type, struct expr_s *expr); int tempop_visit_all (tempop_t *tempop, int overlap, int (*visit) (tempop_t *, void *), void *data); operand_t *alias_operand (struct type_s *type, operand_t *op, struct expr_s *expr); operand_t *label_operand (struct expr_s *label); void free_operand (operand_t *op); sblock_t *new_sblock (void); statement_t *new_statement (st_type_t type, const char *opcode, struct expr_s *expr); int statement_is_cond (statement_t *s) __attribute__((pure)); int statement_is_goto (statement_t *s) __attribute__((pure)); int statement_is_jumpb (statement_t *s) __attribute__((pure)); int statement_is_call (statement_t *s) __attribute__((pure)); int statement_is_return (statement_t *s) __attribute__((pure)); sblock_t *statement_get_target (statement_t *s) __attribute__((pure)); sblock_t **statement_get_targetlist (statement_t *s); void sblock_add_statement (sblock_t *sblock, statement_t *statement); sblock_t *make_statements (struct expr_s *expr); void statements_count_temps (sblock_t *sblock); void print_operand (operand_t *op); void print_statement (statement_t *s); void dump_dot_sblock (void *data, const char *fname); void dot_sblock (struct dstring_s *dstr, sblock_t *sblock, int blockno); void print_sblock (sblock_t *sblock, const char *filename); const char *operand_string (operand_t *op); #endif//statement_h