trans.h

gcc-fortran,linux使用fortran的编译软件。很好用的。

/* Initialize a statement block.  */
void gfc_init_block (stmtblock_t *);
/* Start a new statement block.  Like gfc_init_block but also starts a new
   variable scope.  */
void gfc_start_block (stmtblock_t *);
/* Finish a statement block.  Also closes the scope if the block was created
   with gfc_start_block.  */
tree gfc_finish_block (stmtblock_t *);
/* Merge the scope of a block with its parent.  */
void gfc_merge_block_scope (stmtblock_t * block);

/* Return the backend label decl.  */
tree gfc_get_label_decl (gfc_st_label *);

/* Return the decl for an external function.  */
tree gfc_get_extern_function_decl (gfc_symbol *);

/* Return the decl for a function.  */
tree gfc_get_function_decl (gfc_symbol *);

/* Build a CALL_EXPR.  */
tree gfc_build_function_call (tree, tree);

/* Build an ADDR_EXPR.  */
tree gfc_build_addr_expr (tree, tree);

/* Build an INDIRECT_REF.  */
tree gfc_build_indirect_ref (tree);

/* Build an ARRAY_REF.  */
tree gfc_build_array_ref (tree, tree);

/* Creates a label.  Decl is artificial if label_id == NULL_TREE.  */
tree gfc_build_label_decl (tree);

/* Return the decl used to hold the function return value.
   Do not use if the function has an explicit result variable.  */
tree gfc_get_fake_result_decl (gfc_symbol *);

/* Get the return label for the current function.  */
tree gfc_get_return_label (void);

/* Add a decl to the binding level for the current function.  */
void gfc_add_decl_to_function (tree);

/* Make prototypes for runtime library functions.  */
void gfc_build_builtin_function_decls (void);

/* Set the backend source location of a decl.  */
void gfc_set_decl_location (tree, locus *);

/* Return the variable decl for a symbol.  */
tree gfc_get_symbol_decl (gfc_symbol *);

/* Build a static initializer.  */
tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool);

/* Substitute a temporary variable in place of the real one.  */
void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *);

/* Restore the original variable.  */
void gfc_restore_sym (gfc_symbol *, gfc_saved_var *);

/* Returns true if a variable of specified size should go on the stack.  */
int gfc_can_put_var_on_stack (tree);

/* Allocate the lang-specific part of a decl node.  */
void gfc_allocate_lang_decl (tree);

/* Advance along a TREE_CHAIN.  */
tree gfc_advance_chain (tree, int);

/* Create a decl for a function.  */
void gfc_create_function_decl (gfc_namespace *);
/* Generate the code for a function.  */
void gfc_generate_function_code (gfc_namespace *);
/* Output a BLOCK DATA program unit.  */
void gfc_generate_block_data (gfc_namespace *);
/* Output a decl for a module variable.  */
void gfc_generate_module_vars (gfc_namespace *);

/* Get and set the current location.  */
void gfc_set_backend_locus (locus *);
void gfc_get_backend_locus (locus *);

/* Handle static constructor functions.  */
extern GTY(()) tree gfc_static_ctors;
void gfc_generate_constructors (void);

/* Generate a runtime error check.  */
void gfc_trans_runtime_check (tree, tree, stmtblock_t *);

/* Generate code for an assignment, includes scalarization.  */
tree gfc_trans_assignment (gfc_expr *, gfc_expr *);

/* Generate code for a pointer assignment.  */
tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *);

/* Initialize function decls for library functions.  */
void gfc_build_intrinsic_lib_fndecls (void);
/* Create function decls for IO library functions.  */
void gfc_build_io_library_fndecls (void);
/* Build a function decl for a library function.  */
tree gfc_build_library_function_decl (tree, tree, int, ...);

/* somewhere! */
tree pushdecl (tree);
tree pushdecl_top_level (tree);
void pushlevel (int);
tree poplevel (int, int, int);
tree getdecls (void);
tree gfc_truthvalue_conversion (tree);
tree builtin_function (const char *, tree, int, enum built_in_class,
		       const char *, tree);

/* Runtime library function decls.  */
extern GTY(()) tree gfor_fndecl_internal_malloc;
extern GTY(()) tree gfor_fndecl_internal_malloc64;
extern GTY(()) tree gfor_fndecl_internal_realloc;
extern GTY(()) tree gfor_fndecl_internal_realloc64;
extern GTY(()) tree gfor_fndecl_internal_free;
extern GTY(()) tree gfor_fndecl_allocate;
extern GTY(()) tree gfor_fndecl_allocate64;
extern GTY(()) tree gfor_fndecl_deallocate;
extern GTY(()) tree gfor_fndecl_pause_numeric;
extern GTY(()) tree gfor_fndecl_pause_string;
extern GTY(()) tree gfor_fndecl_stop_numeric;
extern GTY(()) tree gfor_fndecl_stop_string;
extern GTY(()) tree gfor_fndecl_select_string;
extern GTY(()) tree gfor_fndecl_runtime_error;
extern GTY(()) tree gfor_fndecl_set_fpe;
extern GTY(()) tree gfor_fndecl_set_std;
extern GTY(()) tree gfor_fndecl_ttynam;
extern GTY(()) tree gfor_fndecl_ctime;
extern GTY(()) tree gfor_fndecl_fdate;
extern GTY(()) tree gfor_fndecl_in_pack;
extern GTY(()) tree gfor_fndecl_in_unpack;
extern GTY(()) tree gfor_fndecl_associated;

/* Math functions.  Many other math functions are handled in
   trans-intrinsic.c.  */

typedef struct gfc_powdecl_list GTY(())
{
  tree integer;
  tree real;
  tree cmplx;
}
gfc_powdecl_list;

extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3];
extern GTY(()) tree gfor_fndecl_math_cpowf;
extern GTY(()) tree gfor_fndecl_math_cpow;
extern GTY(()) tree gfor_fndecl_math_cpowl10;
extern GTY(()) tree gfor_fndecl_math_cpowl16;
extern GTY(()) tree gfor_fndecl_math_ishftc4;
extern GTY(()) tree gfor_fndecl_math_ishftc8;
extern GTY(()) tree gfor_fndecl_math_ishftc16;
extern GTY(()) tree gfor_fndecl_math_exponent4;
extern GTY(()) tree gfor_fndecl_math_exponent8;
extern GTY(()) tree gfor_fndecl_math_exponent10;
extern GTY(()) tree gfor_fndecl_math_exponent16;

/* String functions.  */
extern GTY(()) tree gfor_fndecl_copy_string;
extern GTY(()) tree gfor_fndecl_compare_string;
extern GTY(()) tree gfor_fndecl_concat_string;
extern GTY(()) tree gfor_fndecl_string_len_trim;
extern GTY(()) tree gfor_fndecl_string_index;
extern GTY(()) tree gfor_fndecl_string_scan;
extern GTY(()) tree gfor_fndecl_string_verify;
extern GTY(()) tree gfor_fndecl_string_trim;
extern GTY(()) tree gfor_fndecl_string_repeat;
extern GTY(()) tree gfor_fndecl_adjustl;
extern GTY(()) tree gfor_fndecl_adjustr;

/* Other misc. runtime library functions.  */
extern GTY(()) tree gfor_fndecl_size0;
extern GTY(()) tree gfor_fndecl_size1;
extern GTY(()) tree gfor_fndecl_iargc;

/* Implemented in FORTRAN.  */
extern GTY(()) tree gfor_fndecl_si_kind;
extern GTY(()) tree gfor_fndecl_sr_kind;


/* True if node is an integer constant.  */
#define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST)

/* G95-specific declaration information.  */

/* Array types only.  */
struct lang_type		GTY(())
{
  int rank;
  tree lbound[GFC_MAX_DIMENSIONS];
  tree ubound[GFC_MAX_DIMENSIONS];
  tree stride[GFC_MAX_DIMENSIONS];
  tree size;
  tree offset;
  tree dtype;
  tree dataptr_type;
};

struct lang_decl		GTY(())
{
  /* Dummy variables.  */
  tree saved_descriptor;
  /* Assigned integer nodes.  Stringlength is the IO format string's length.
     Addr is the address of the string or the target label. Stringlength is
     initialized to -2 and assigned to -1 when addr is assigned to the
     address of target label.  */
  tree stringlen;
  tree addr;
};


#define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr
#define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen
#define GFC_DECL_SAVED_DESCRIPTOR(node) \
  (DECL_LANG_SPECIFIC(node)->saved_descriptor)
#define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node)
#define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node)
#define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node)

/* An array descriptor.  */
#define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node)
/* An array without a descriptor.  */
#define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node)
/* The GFC_TYPE_ARRAY_* members are present in both descriptor and
   descriptorless array types.  */
#define GFC_TYPE_ARRAY_LBOUND(node, dim) \
  (TYPE_LANG_SPECIFIC(node)->lbound[dim])
#define GFC_TYPE_ARRAY_UBOUND(node, dim) \
  (TYPE_LANG_SPECIFIC(node)->ubound[dim])
#define GFC_TYPE_ARRAY_STRIDE(node, dim) \
  (TYPE_LANG_SPECIFIC(node)->stride[dim])
#define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank)
#define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size)
#define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset)
/* Code should use gfc_get_dtype instead of accesig this directly.  It may
   not be known when the type is created.  */
#define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype)
#define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \
  (TYPE_LANG_SPECIFIC(node)->dataptr_type)

/* I changed this from sorry(...) because it should not return.  */
/* TODO: Remove gfc_todo_error before releasing version 1.0.  */
#define gfc_todo_error(args...) fatal_error("gfc_todo: Not Implemented: " args)

/* Build an expression with void type.  */
#define build1_v(code, arg) build(code, void_type_node, arg)
#define build2_v(code, arg1, arg2) build2(code, void_type_node, \
                                          arg1, arg2)
#define build3_v(code, arg1, arg2, arg3) build3(code, void_type_node, \
                                                arg1, arg2, arg3)

/* This group of functions allows a caller to evaluate an expression from
   the callee's interface.  It establishes a mapping between the interface's
   dummy arguments and the caller's actual arguments, then applies that
   mapping to a given gfc_expr.

   You can initialize a mapping structure like so:

       gfc_interface_mapping mapping;
       ...
       gfc_init_interface_mapping (&mapping);

   You should then evaluate each actual argument into a temporary
   gfc_se structure, here called "se", and map the result to the
   dummy argument's symbol, here called "sym":

       gfc_add_interface_mapping (&mapping, sym, &se);

   After adding all mappings, you should call:

       gfc_finish_interface_mapping (&mapping, pre, post);

   where "pre" and "post" are statement blocks for initialization
   and finalization code respectively.  You can then evaluate an
   interface expression "expr" as follows:

       gfc_apply_interface_mapping (&mapping, se, expr);

   Once you've evaluated all expressions, you should free
   the mapping structure with:

       gfc_free_interface_mapping (&mapping); */


/* This structure represents a mapping from OLD to NEW, where OLD is a
   dummy argument symbol and NEW is a symbol that represents the value
   of an actual argument.  Mappings are linked together using NEXT
   (in no particular order).  */
typedef struct gfc_interface_sym_mapping
{
  struct gfc_interface_sym_mapping *next;
  gfc_symbol *old;
  gfc_symtree *new;
}
gfc_interface_sym_mapping;


/* This structure is used by callers to evaluate an expression from
   a callee's interface.  */
typedef struct gfc_interface_mapping
{
  /* Maps the interface's dummy arguments to the values that the caller
     is passing.  The whole list is owned by this gfc_interface_mapping.  */
  gfc_interface_sym_mapping *syms;

  /* A list of gfc_charlens that were needed when creating copies of
     expressions.  The whole list is owned by this gfc_interface_mapping.  */
  gfc_charlen *charlens;
}
gfc_interface_mapping;

void gfc_init_interface_mapping (gfc_interface_mapping *);
void gfc_free_interface_mapping (gfc_interface_mapping *);
void gfc_add_interface_mapping (gfc_interface_mapping *,
				gfc_symbol *, gfc_se *);
void gfc_finish_interface_mapping (gfc_interface_mapping *,
				   stmtblock_t *, stmtblock_t *);
void gfc_apply_interface_mapping (gfc_interface_mapping *,
				  gfc_se *, gfc_expr *);

#endif /* GFC_TRANS_H */