| /* IO Code translation/library interface |
| Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
| Contributed by Paul Brook |
| |
| This file is part of GCC. |
| |
| GCC 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, or (at your option) any later |
| version. |
| |
| GCC 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 GCC; see the file COPYING. If not, write to the Free |
| Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301, USA. */ |
| |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tree.h" |
| #include "tree-gimple.h" |
| #include "ggc.h" |
| #include "toplev.h" |
| #include "real.h" |
| #include "gfortran.h" |
| #include "trans.h" |
| #include "trans-stmt.h" |
| #include "trans-array.h" |
| #include "trans-types.h" |
| #include "trans-const.h" |
| |
| /* Members of the ioparm structure. */ |
| |
| enum ioparam_type |
| { |
| IOPARM_ptype_common, |
| IOPARM_ptype_open, |
| IOPARM_ptype_close, |
| IOPARM_ptype_filepos, |
| IOPARM_ptype_inquire, |
| IOPARM_ptype_dt, |
| IOPARM_ptype_num |
| }; |
| |
| enum iofield_type |
| { |
| IOPARM_type_int4, |
| IOPARM_type_intio, |
| IOPARM_type_pint4, |
| IOPARM_type_pintio, |
| IOPARM_type_pchar, |
| IOPARM_type_parray, |
| IOPARM_type_pad, |
| IOPARM_type_char1, |
| IOPARM_type_char2, |
| IOPARM_type_common, |
| IOPARM_type_num |
| }; |
| |
| typedef struct gfc_st_parameter_field GTY(()) |
| { |
| const char *name; |
| unsigned int mask; |
| enum ioparam_type param_type; |
| enum iofield_type type; |
| tree field; |
| tree field_len; |
| } |
| gfc_st_parameter_field; |
| |
| typedef struct gfc_st_parameter GTY(()) |
| { |
| const char *name; |
| tree type; |
| } |
| gfc_st_parameter; |
| |
| enum iofield |
| { |
| #define IOPARM(param_type, name, mask, type) IOPARM_##param_type##_##name, |
| #include "ioparm.def" |
| #undef IOPARM |
| IOPARM_field_num |
| }; |
| |
| static GTY(()) gfc_st_parameter st_parameter[] = |
| { |
| { "common", NULL }, |
| { "open", NULL }, |
| { "close", NULL }, |
| { "filepos", NULL }, |
| { "inquire", NULL }, |
| { "dt", NULL } |
| }; |
| |
| static GTY(()) gfc_st_parameter_field st_parameter_field[] = |
| { |
| #define IOPARM(param_type, name, mask, type) \ |
| { #name, mask, IOPARM_ptype_##param_type, IOPARM_type_##type, NULL, NULL }, |
| #include "ioparm.def" |
| #undef IOPARM |
| { NULL, 0, 0, 0, NULL, NULL } |
| }; |
| |
| /* Library I/O subroutines */ |
| |
| enum iocall |
| { |
| IOCALL_READ, |
| IOCALL_READ_DONE, |
| IOCALL_WRITE, |
| IOCALL_WRITE_DONE, |
| IOCALL_X_INTEGER, |
| IOCALL_X_LOGICAL, |
| IOCALL_X_CHARACTER, |
| IOCALL_X_REAL, |
| IOCALL_X_COMPLEX, |
| IOCALL_X_ARRAY, |
| IOCALL_OPEN, |
| IOCALL_CLOSE, |
| IOCALL_INQUIRE, |
| IOCALL_IOLENGTH, |
| IOCALL_IOLENGTH_DONE, |
| IOCALL_REWIND, |
| IOCALL_BACKSPACE, |
| IOCALL_ENDFILE, |
| IOCALL_FLUSH, |
| IOCALL_SET_NML_VAL, |
| IOCALL_SET_NML_VAL_DIM, |
| IOCALL_NUM |
| }; |
| |
| static GTY(()) tree iocall[IOCALL_NUM]; |
| |
| /* Variable for keeping track of what the last data transfer statement |
| was. Used for deciding which subroutine to call when the data |
| transfer is complete. */ |
| static enum { READ, WRITE, IOLENGTH } last_dt; |
| |
| /* The data transfer parameter block that should be shared by all |
| data transfer calls belonging to the same read/write/iolength. */ |
| static GTY(()) tree dt_parm; |
| static stmtblock_t *dt_post_end_block; |
| |
| static void |
| gfc_build_st_parameter (enum ioparam_type ptype, tree *types) |
| { |
| enum iofield type; |
| gfc_st_parameter_field *p; |
| char name[64]; |
| size_t len; |
| tree t = make_node (RECORD_TYPE); |
| |
| len = strlen (st_parameter[ptype].name); |
| gcc_assert (len <= sizeof (name) - sizeof ("__st_parameter_")); |
| memcpy (name, "__st_parameter_", sizeof ("__st_parameter_")); |
| memcpy (name + sizeof ("__st_parameter_") - 1, st_parameter[ptype].name, |
| len + 1); |
| TYPE_NAME (t) = get_identifier (name); |
| |
| for (type = 0, p = st_parameter_field; type < IOPARM_field_num; type++, p++) |
| if (p->param_type == ptype) |
| switch (p->type) |
| { |
| case IOPARM_type_int4: |
| case IOPARM_type_intio: |
| case IOPARM_type_pint4: |
| case IOPARM_type_pintio: |
| case IOPARM_type_parray: |
| case IOPARM_type_pchar: |
| case IOPARM_type_pad: |
| p->field = gfc_add_field_to_struct (&TYPE_FIELDS (t), t, |
| get_identifier (p->name), |
| types[p->type]); |
| break; |
| case IOPARM_type_char1: |
| p->field = gfc_add_field_to_struct (&TYPE_FIELDS (t), t, |
| get_identifier (p->name), |
| pchar_type_node); |
| /* FALLTHROUGH */ |
| case IOPARM_type_char2: |
| len = strlen (p->name); |
| gcc_assert (len <= sizeof (name) - sizeof ("_len")); |
| memcpy (name, p->name, len); |
| memcpy (name + len, "_len", sizeof ("_len")); |
| p->field_len = gfc_add_field_to_struct (&TYPE_FIELDS (t), t, |
| get_identifier (name), |
| gfc_charlen_type_node); |
| if (p->type == IOPARM_type_char2) |
| p->field = gfc_add_field_to_struct (&TYPE_FIELDS (t), t, |
| get_identifier (p->name), |
| pchar_type_node); |
| break; |
| case IOPARM_type_common: |
| p->field |
| = gfc_add_field_to_struct (&TYPE_FIELDS (t), t, |
| get_identifier (p->name), |
| st_parameter[IOPARM_ptype_common].type); |
| break; |
| case IOPARM_type_num: |
| gcc_unreachable (); |
| } |
| |
| gfc_finish_type (t); |
| st_parameter[ptype].type = t; |
| } |
| |
| /* Create function decls for IO library functions. */ |
| |
| void |
| gfc_build_io_library_fndecls (void) |
| { |
| tree types[IOPARM_type_num], pad_idx, gfc_int4_type_node; |
| tree gfc_intio_type_node; |
| tree parm_type, dt_parm_type; |
| tree gfc_c_int_type_node; |
| HOST_WIDE_INT pad_size; |
| enum ioparam_type ptype; |
| |
| types[IOPARM_type_int4] = gfc_int4_type_node = gfc_get_int_type (4); |
| types[IOPARM_type_intio] = gfc_intio_type_node |
| = gfc_get_int_type (gfc_intio_kind); |
| types[IOPARM_type_pint4] = build_pointer_type (gfc_int4_type_node); |
| types[IOPARM_type_pintio] |
| = build_pointer_type (gfc_intio_type_node); |
| types[IOPARM_type_parray] = pchar_type_node; |
| types[IOPARM_type_pchar] = pchar_type_node; |
| pad_size = 16 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (pchar_type_node)); |
| pad_size += 32 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (integer_type_node)); |
| pad_idx = build_index_type (build_int_cst (NULL_TREE, pad_size)); |
| types[IOPARM_type_pad] = build_array_type (char_type_node, pad_idx); |
| |
| /* pad actually contains pointers and integers so it needs to have an |
| alignment that is at least as large as the needed alignment for those |
| types. See the st_parameter_dt structure in libgfortran/io/io.h for |
| what really goes into this space. */ |
| TYPE_ALIGN (types[IOPARM_type_pad]) = MAX (TYPE_ALIGN (pchar_type_node), |
| TYPE_ALIGN (gfc_get_int_type (gfc_max_integer_kind))); |
| |
| gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind); |
| |
| for (ptype = IOPARM_ptype_common; ptype < IOPARM_ptype_num; ptype++) |
| gfc_build_st_parameter (ptype, types); |
| |
| /* Define the transfer functions. */ |
| |
| dt_parm_type = build_pointer_type (st_parameter[IOPARM_ptype_dt].type); |
| |
| iocall[IOCALL_X_INTEGER] = |
| gfc_build_library_function_decl (get_identifier |
| (PREFIX("transfer_integer")), |
| void_type_node, 3, dt_parm_type, |
| pvoid_type_node, gfc_int4_type_node); |
| |
| iocall[IOCALL_X_LOGICAL] = |
| gfc_build_library_function_decl (get_identifier |
| (PREFIX("transfer_logical")), |
| void_type_node, 3, dt_parm_type, |
| pvoid_type_node, gfc_int4_type_node); |
| |
| iocall[IOCALL_X_CHARACTER] = |
| gfc_build_library_function_decl (get_identifier |
| (PREFIX("transfer_character")), |
| void_type_node, 3, dt_parm_type, |
| pvoid_type_node, gfc_int4_type_node); |
| |
| iocall[IOCALL_X_REAL] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("transfer_real")), |
| void_type_node, 3, dt_parm_type, |
| pvoid_type_node, gfc_int4_type_node); |
| |
| iocall[IOCALL_X_COMPLEX] = |
| gfc_build_library_function_decl (get_identifier |
| (PREFIX("transfer_complex")), |
| void_type_node, 3, dt_parm_type, |
| pvoid_type_node, gfc_int4_type_node); |
| |
| iocall[IOCALL_X_ARRAY] = |
| gfc_build_library_function_decl (get_identifier |
| (PREFIX("transfer_array")), |
| void_type_node, 4, dt_parm_type, |
| pvoid_type_node, gfc_c_int_type_node, |
| gfc_charlen_type_node); |
| |
| /* Library entry points */ |
| |
| iocall[IOCALL_READ] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_read")), |
| void_type_node, 1, dt_parm_type); |
| |
| iocall[IOCALL_WRITE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_write")), |
| void_type_node, 1, dt_parm_type); |
| |
| parm_type = build_pointer_type (st_parameter[IOPARM_ptype_open].type); |
| iocall[IOCALL_OPEN] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_open")), |
| void_type_node, 1, parm_type); |
| |
| |
| parm_type = build_pointer_type (st_parameter[IOPARM_ptype_close].type); |
| iocall[IOCALL_CLOSE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_close")), |
| void_type_node, 1, parm_type); |
| |
| parm_type = build_pointer_type (st_parameter[IOPARM_ptype_inquire].type); |
| iocall[IOCALL_INQUIRE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_inquire")), |
| gfc_int4_type_node, 1, parm_type); |
| |
| iocall[IOCALL_IOLENGTH] = |
| gfc_build_library_function_decl(get_identifier (PREFIX("st_iolength")), |
| void_type_node, 1, dt_parm_type); |
| |
| parm_type = build_pointer_type (st_parameter[IOPARM_ptype_filepos].type); |
| iocall[IOCALL_REWIND] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_rewind")), |
| gfc_int4_type_node, 1, parm_type); |
| |
| iocall[IOCALL_BACKSPACE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_backspace")), |
| gfc_int4_type_node, 1, parm_type); |
| |
| iocall[IOCALL_ENDFILE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_endfile")), |
| gfc_int4_type_node, 1, parm_type); |
| |
| iocall[IOCALL_FLUSH] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_flush")), |
| gfc_int4_type_node, 1, parm_type); |
| |
| /* Library helpers */ |
| |
| iocall[IOCALL_READ_DONE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_read_done")), |
| gfc_int4_type_node, 1, dt_parm_type); |
| |
| iocall[IOCALL_WRITE_DONE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_write_done")), |
| gfc_int4_type_node, 1, dt_parm_type); |
| |
| iocall[IOCALL_IOLENGTH_DONE] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_iolength_done")), |
| gfc_int4_type_node, 1, dt_parm_type); |
| |
| |
| iocall[IOCALL_SET_NML_VAL] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var")), |
| void_type_node, 6, dt_parm_type, |
| pvoid_type_node, pvoid_type_node, |
| gfc_int4_type_node, gfc_charlen_type_node, |
| gfc_int4_type_node); |
| |
| iocall[IOCALL_SET_NML_VAL_DIM] = |
| gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_dim")), |
| void_type_node, 5, dt_parm_type, |
| gfc_int4_type_node, gfc_int4_type_node, |
| gfc_int4_type_node, gfc_int4_type_node); |
| } |
| |
| |
| /* Generate code to store an integer constant into the |
| st_parameter_XXX structure. */ |
| |
| static unsigned int |
| set_parameter_const (stmtblock_t *block, tree var, enum iofield type, |
| unsigned int val) |
| { |
| tree tmp; |
| gfc_st_parameter_field *p = &st_parameter_field[type]; |
| |
| if (p->param_type == IOPARM_ptype_common) |
| var = build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type, |
| var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE); |
| tmp = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| gfc_add_modify_expr (block, tmp, build_int_cst (TREE_TYPE (p->field), val)); |
| return p->mask; |
| } |
| |
| |
| /* Generate code to store a non-string I/O parameter into the |
| st_parameter_XXX structure. This is a pass by value. */ |
| |
| static unsigned int |
| set_parameter_value (stmtblock_t *block, tree var, enum iofield type, |
| gfc_expr *e) |
| { |
| gfc_se se; |
| tree tmp; |
| gfc_st_parameter_field *p = &st_parameter_field[type]; |
| |
| gfc_init_se (&se, NULL); |
| gfc_conv_expr_type (&se, e, TREE_TYPE (p->field)); |
| gfc_add_block_to_block (block, &se.pre); |
| |
| if (p->param_type == IOPARM_ptype_common) |
| var = build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type, |
| var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE); |
| tmp = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| gfc_add_modify_expr (block, tmp, se.expr); |
| return p->mask; |
| } |
| |
| |
| /* Generate code to store a non-string I/O parameter into the |
| st_parameter_XXX structure. This is pass by reference. */ |
| |
| static unsigned int |
| set_parameter_ref (stmtblock_t *block, stmtblock_t *postblock, |
| tree var, enum iofield type, gfc_expr *e) |
| { |
| gfc_se se; |
| tree tmp, addr; |
| gfc_st_parameter_field *p = &st_parameter_field[type]; |
| |
| gcc_assert (e->ts.type == BT_INTEGER || e->ts.type == BT_LOGICAL); |
| gfc_init_se (&se, NULL); |
| gfc_conv_expr_lhs (&se, e); |
| |
| gfc_add_block_to_block (block, &se.pre); |
| |
| if (TYPE_MODE (TREE_TYPE (se.expr)) |
| == TYPE_MODE (TREE_TYPE (TREE_TYPE (p->field)))) |
| addr = convert (TREE_TYPE (p->field), |
| build_fold_addr_expr (se.expr)); |
| else |
| { |
| /* The type used by the library has different size |
| from the type of the variable supplied by the user. |
| Need to use a temporary. */ |
| tree tmpvar |
| = gfc_create_var (TREE_TYPE (TREE_TYPE (p->field)), |
| st_parameter_field[type].name); |
| addr = build_fold_addr_expr (tmpvar); |
| tmp = convert (TREE_TYPE (se.expr), tmpvar); |
| gfc_add_modify_expr (postblock, se.expr, tmp); |
| } |
| |
| if (p->param_type == IOPARM_ptype_common) |
| var = build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type, |
| var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE); |
| tmp = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| gfc_add_modify_expr (block, tmp, addr); |
| return p->mask; |
| } |
| |
| /* Given an array expr, find its address and length to get a string. If the |
| array is full, the string's address is the address of array's first element |
| and the length is the size of the whole array. If it is an element, the |
| string's address is the element's address and the length is the rest size of |
| the array. |
| */ |
| |
| static void |
| gfc_convert_array_to_string (gfc_se * se, gfc_expr * e) |
| { |
| tree tmp; |
| tree array; |
| tree type; |
| tree size; |
| int rank; |
| gfc_symbol *sym; |
| |
| sym = e->symtree->n.sym; |
| rank = sym->as->rank - 1; |
| |
| if (e->ref->u.ar.type == AR_FULL) |
| { |
| se->expr = gfc_get_symbol_decl (sym); |
| se->expr = gfc_conv_array_data (se->expr); |
| } |
| else |
| { |
| gfc_conv_expr (se, e); |
| } |
| |
| array = sym->backend_decl; |
| type = TREE_TYPE (array); |
| |
| if (GFC_ARRAY_TYPE_P (type)) |
| size = GFC_TYPE_ARRAY_SIZE (type); |
| else |
| { |
| gcc_assert (GFC_DESCRIPTOR_TYPE_P (type)); |
| size = gfc_conv_array_stride (array, rank); |
| tmp = fold_build2 (MINUS_EXPR, gfc_array_index_type, |
| gfc_conv_array_ubound (array, rank), |
| gfc_conv_array_lbound (array, rank)); |
| tmp = fold_build2 (PLUS_EXPR, gfc_array_index_type, tmp, |
| gfc_index_one_node); |
| size = fold_build2 (MULT_EXPR, gfc_array_index_type, tmp, size); |
| } |
| |
| gcc_assert (size); |
| |
| /* If it is an element, we need the its address and size of the rest. */ |
| if (e->ref->u.ar.type == AR_ELEMENT) |
| { |
| size = fold_build2 (MINUS_EXPR, gfc_array_index_type, size, |
| TREE_OPERAND (se->expr, 1)); |
| se->expr = build_fold_addr_expr (se->expr); |
| } |
| |
| tmp = TYPE_SIZE_UNIT (gfc_get_element_type (type)); |
| size = fold_build2 (MULT_EXPR, gfc_array_index_type, size, tmp); |
| |
| se->string_length = fold_convert (gfc_charlen_type_node, size); |
| } |
| |
| |
| /* Generate code to store a string and its length into the |
| st_parameter_XXX structure. */ |
| |
| static unsigned int |
| set_string (stmtblock_t * block, stmtblock_t * postblock, tree var, |
| enum iofield type, gfc_expr * e) |
| { |
| gfc_se se; |
| tree tmp; |
| tree io; |
| tree len; |
| gfc_st_parameter_field *p = &st_parameter_field[type]; |
| |
| gfc_init_se (&se, NULL); |
| |
| if (p->param_type == IOPARM_ptype_common) |
| var = build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type, |
| var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE); |
| io = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| len = build3 (COMPONENT_REF, TREE_TYPE (p->field_len), var, p->field_len, |
| NULL_TREE); |
| |
| /* Integer variable assigned a format label. */ |
| if (e->ts.type == BT_INTEGER && e->symtree->n.sym->attr.assign == 1) |
| { |
| char * msg; |
| |
| gfc_conv_label_variable (&se, e); |
| tmp = GFC_DECL_STRING_LEN (se.expr); |
| tmp = fold_build2 (LT_EXPR, boolean_type_node, |
| tmp, build_int_cst (TREE_TYPE (tmp), 0)); |
| |
| asprintf(&msg, "Label assigned to variable '%s' is not a format label", |
| e->symtree->name); |
| gfc_trans_runtime_check (tmp, msg, &se.pre, &e->where); |
| gfc_free (msg); |
| |
| gfc_add_modify_expr (&se.pre, io, |
| fold_convert (TREE_TYPE (io), GFC_DECL_ASSIGN_ADDR (se.expr))); |
| gfc_add_modify_expr (&se.pre, len, GFC_DECL_STRING_LEN (se.expr)); |
| } |
| else |
| { |
| /* General character. */ |
| if (e->ts.type == BT_CHARACTER && e->rank == 0) |
| gfc_conv_expr (&se, e); |
| /* Array assigned Hollerith constant or character array. */ |
| else if (e->symtree && (e->symtree->n.sym->as->rank > 0)) |
| gfc_convert_array_to_string (&se, e); |
| else |
| gcc_unreachable (); |
| |
| gfc_conv_string_parameter (&se); |
| gfc_add_modify_expr (&se.pre, io, fold_convert (TREE_TYPE (io), se.expr)); |
| gfc_add_modify_expr (&se.pre, len, se.string_length); |
| } |
| |
| gfc_add_block_to_block (block, &se.pre); |
| gfc_add_block_to_block (postblock, &se.post); |
| return p->mask; |
| } |
| |
| |
| /* Generate code to store the character (array) and the character length |
| for an internal unit. */ |
| |
| static unsigned int |
| set_internal_unit (stmtblock_t * block, stmtblock_t * post_block, |
| tree var, gfc_expr * e) |
| { |
| gfc_se se; |
| tree io; |
| tree len; |
| tree desc; |
| tree tmp; |
| gfc_st_parameter_field *p; |
| unsigned int mask; |
| |
| gfc_init_se (&se, NULL); |
| |
| p = &st_parameter_field[IOPARM_dt_internal_unit]; |
| mask = p->mask; |
| io = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| len = build3 (COMPONENT_REF, TREE_TYPE (p->field_len), var, p->field_len, |
| NULL_TREE); |
| p = &st_parameter_field[IOPARM_dt_internal_unit_desc]; |
| desc = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| |
| gcc_assert (e->ts.type == BT_CHARACTER); |
| |
| /* Character scalars. */ |
| if (e->rank == 0) |
| { |
| gfc_conv_expr (&se, e); |
| gfc_conv_string_parameter (&se); |
| tmp = se.expr; |
| se.expr = build_int_cst (pchar_type_node, 0); |
| } |
| |
| /* Character array. */ |
| else if (e->rank > 0) |
| { |
| se.ss = gfc_walk_expr (e); |
| |
| if (is_aliased_array (e)) |
| { |
| /* Use a temporary for components of arrays of derived types |
| or substring array references. */ |
| gfc_conv_aliased_arg (&se, e, 0, |
| last_dt == READ ? INTENT_IN : INTENT_OUT); |
| tmp = build_fold_indirect_ref (se.expr); |
| se.expr = gfc_build_addr_expr (pchar_type_node, tmp); |
| tmp = gfc_conv_descriptor_data_get (tmp); |
| } |
| else |
| { |
| /* Return the data pointer and rank from the descriptor. */ |
| gfc_conv_expr_descriptor (&se, e, se.ss); |
| tmp = gfc_conv_descriptor_data_get (se.expr); |
| se.expr = gfc_build_addr_expr (pchar_type_node, se.expr); |
| } |
| } |
| else |
| gcc_unreachable (); |
| |
| /* The cast is needed for character substrings and the descriptor |
| data. */ |
| gfc_add_modify_expr (&se.pre, io, fold_convert (TREE_TYPE (io), tmp)); |
| gfc_add_modify_expr (&se.pre, len, |
| fold_convert (TREE_TYPE (len), se.string_length)); |
| gfc_add_modify_expr (&se.pre, desc, se.expr); |
| |
| gfc_add_block_to_block (block, &se.pre); |
| gfc_add_block_to_block (post_block, &se.post); |
| return mask; |
| } |
| |
| /* Add a case to a IO-result switch. */ |
| |
| static void |
| add_case (int label_value, gfc_st_label * label, stmtblock_t * body) |
| { |
| tree tmp, value; |
| |
| if (label == NULL) |
| return; /* No label, no case */ |
| |
| value = build_int_cst (NULL_TREE, label_value); |
| |
| /* Make a backend label for this case. */ |
| tmp = gfc_build_label_decl (NULL_TREE); |
| |
| /* And the case itself. */ |
| tmp = build3_v (CASE_LABEL_EXPR, value, NULL_TREE, tmp); |
| gfc_add_expr_to_block (body, tmp); |
| |
| /* Jump to the label. */ |
| tmp = build1_v (GOTO_EXPR, gfc_get_label_decl (label)); |
| gfc_add_expr_to_block (body, tmp); |
| } |
| |
| |
| /* Generate a switch statement that branches to the correct I/O |
| result label. The last statement of an I/O call stores the |
| result into a variable because there is often cleanup that |
| must be done before the switch, so a temporary would have to |
| be created anyway. */ |
| |
| static void |
| io_result (stmtblock_t * block, tree var, gfc_st_label * err_label, |
| gfc_st_label * end_label, gfc_st_label * eor_label) |
| { |
| stmtblock_t body; |
| tree tmp, rc; |
| gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_flags]; |
| |
| /* If no labels are specified, ignore the result instead |
| of building an empty switch. */ |
| if (err_label == NULL |
| && end_label == NULL |
| && eor_label == NULL) |
| return; |
| |
| /* Build a switch statement. */ |
| gfc_start_block (&body); |
| |
| /* The label values here must be the same as the values |
| in the library_return enum in the runtime library */ |
| add_case (1, err_label, &body); |
| add_case (2, end_label, &body); |
| add_case (3, eor_label, &body); |
| |
| tmp = gfc_finish_block (&body); |
| |
| var = build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type, |
| var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE); |
| rc = build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field, |
| NULL_TREE); |
| rc = build2 (BIT_AND_EXPR, TREE_TYPE (rc), rc, |
| build_int_cst (TREE_TYPE (rc), IOPARM_common_libreturn_mask)); |
| |
| tmp = build3_v (SWITCH_EXPR, rc, tmp, NULL_TREE); |
| |
| gfc_add_expr_to_block (block, tmp); |
| } |
| |
| |
| /* Store the current file and line number to variables so that if a |
| library call goes awry, we can tell the user where the problem is. */ |
| |
| static void |
| set_error_locus (stmtblock_t * block, tree var, locus * where) |
| { |
| gfc_file *f; |
| tree str, locus_file; |
| int line; |
| gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_filename]; |
| |
| locus_file = build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type, |
| var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE); |
| locus_file = build3 (COMPONENT_REF, TREE_TYPE (p->field), locus_file, |
| p->field, NULL_TREE); |
| f = where->lb->file; |
| str = gfc_build_cstring_const (f->filename); |
| |
| str = gfc_build_addr_expr (pchar_type_node, str); |
| gfc_add_modify_expr (block, locus_file, str); |
| |
| #ifdef USE_MAPPED_LOCATION |
| line = LOCATION_LINE (where->lb->location); |
| #else |
| line = where->lb->linenum; |
| #endif |
| set_parameter_const (block, var, IOPARM_common_line, line); |
| } |
| |
| |
| /* Translate an OPEN statement. */ |
| |
| tree |
| gfc_trans_open (gfc_code * code) |
| { |
| stmtblock_t block, post_block; |
| gfc_open *p; |
| tree tmp, var; |
| unsigned int mask = 0; |
| |
| gfc_start_block (&block); |
| gfc_init_block (&post_block); |
| |
| var = gfc_create_var (st_parameter[IOPARM_ptype_open].type, "open_parm"); |
| |
| set_error_locus (&block, var, &code->loc); |
| p = code->ext.open; |
| |
| if (p->unit) |
| set_parameter_value (&block, var, IOPARM_common_unit, p->unit); |
| else |
| set_parameter_const (&block, var, IOPARM_common_unit, 0); |
| |
| if (p->file) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_file, p->file); |
| |
| if (p->status) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_status, |
| p->status); |
| |
| if (p->access) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_access, |
| p->access); |
| |
| if (p->form) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_form, p->form); |
| |
| if (p->recl) |
| mask |= set_parameter_value (&block, var, IOPARM_open_recl_in, p->recl); |
| |
| if (p->blank) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_blank, |
| p->blank); |
| |
| if (p->position) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_position, |
| p->position); |
| |
| if (p->action) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_action, |
| p->action); |
| |
| if (p->delim) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_delim, |
| p->delim); |
| |
| if (p->pad) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_pad, p->pad); |
| |
| if (p->iomsg) |
| mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg, |
| p->iomsg); |
| |
| if (p->iostat) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat, |
| p->iostat); |
| |
| if (p->err) |
| mask |= IOPARM_common_err; |
| |
| if (p->convert) |
| mask |= set_string (&block, &post_block, var, IOPARM_open_convert, |
| p->convert); |
| |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| |
| tmp = build_fold_addr_expr (var); |
| tmp = gfc_chainon_list (NULL_TREE, tmp); |
| tmp = build_function_call_expr (iocall[IOCALL_OPEN], tmp); |
| gfc_add_expr_to_block (&block, tmp); |
| |
| gfc_add_block_to_block (&block, &post_block); |
| |
| io_result (&block, var, p->err, NULL, NULL); |
| |
| return gfc_finish_block (&block); |
| } |
| |
| |
| /* Translate a CLOSE statement. */ |
| |
| tree |
| gfc_trans_close (gfc_code * code) |
| { |
| stmtblock_t block, post_block; |
| gfc_close *p; |
| tree tmp, var; |
| unsigned int mask = 0; |
| |
| gfc_start_block (&block); |
| gfc_init_block (&post_block); |
| |
| var = gfc_create_var (st_parameter[IOPARM_ptype_close].type, "close_parm"); |
| |
| set_error_locus (&block, var, &code->loc); |
| p = code->ext.close; |
| |
| if (p->unit) |
| set_parameter_value (&block, var, IOPARM_common_unit, p->unit); |
| else |
| set_parameter_const (&block, var, IOPARM_common_unit, 0); |
| |
| if (p->status) |
| mask |= set_string (&block, &post_block, var, IOPARM_close_status, |
| p->status); |
| |
| if (p->iomsg) |
| mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg, |
| p->iomsg); |
| |
| if (p->iostat) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat, |
| p->iostat); |
| |
| if (p->err) |
| mask |= IOPARM_common_err; |
| |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| |
| tmp = build_fold_addr_expr (var); |
| tmp = gfc_chainon_list (NULL_TREE, tmp); |
| tmp = build_function_call_expr (iocall[IOCALL_CLOSE], tmp); |
| gfc_add_expr_to_block (&block, tmp); |
| |
| gfc_add_block_to_block (&block, &post_block); |
| |
| io_result (&block, var, p->err, NULL, NULL); |
| |
| return gfc_finish_block (&block); |
| } |
| |
| |
| /* Common subroutine for building a file positioning statement. */ |
| |
| static tree |
| build_filepos (tree function, gfc_code * code) |
| { |
| stmtblock_t block, post_block; |
| gfc_filepos *p; |
| tree tmp, var; |
| unsigned int mask = 0; |
| |
| p = code->ext.filepos; |
| |
| gfc_start_block (&block); |
| gfc_init_block (&post_block); |
| |
| var = gfc_create_var (st_parameter[IOPARM_ptype_filepos].type, |
| "filepos_parm"); |
| |
| set_error_locus (&block, var, &code->loc); |
| |
| if (p->unit) |
| set_parameter_value (&block, var, IOPARM_common_unit, p->unit); |
| else |
| set_parameter_const (&block, var, IOPARM_common_unit, 0); |
| |
| if (p->iomsg) |
| mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg, |
| p->iomsg); |
| |
| if (p->iostat) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat, |
| p->iostat); |
| |
| if (p->err) |
| mask |= IOPARM_common_err; |
| |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| |
| tmp = build_fold_addr_expr (var); |
| tmp = gfc_chainon_list (NULL_TREE, tmp); |
| tmp = build_function_call_expr (function, tmp); |
| gfc_add_expr_to_block (&block, tmp); |
| |
| gfc_add_block_to_block (&block, &post_block); |
| |
| io_result (&block, var, p->err, NULL, NULL); |
| |
| return gfc_finish_block (&block); |
| } |
| |
| |
| /* Translate a BACKSPACE statement. */ |
| |
| tree |
| gfc_trans_backspace (gfc_code * code) |
| { |
| return build_filepos (iocall[IOCALL_BACKSPACE], code); |
| } |
| |
| |
| /* Translate an ENDFILE statement. */ |
| |
| tree |
| gfc_trans_endfile (gfc_code * code) |
| { |
| return build_filepos (iocall[IOCALL_ENDFILE], code); |
| } |
| |
| |
| /* Translate a REWIND statement. */ |
| |
| tree |
| gfc_trans_rewind (gfc_code * code) |
| { |
| return build_filepos (iocall[IOCALL_REWIND], code); |
| } |
| |
| |
| /* Translate a FLUSH statement. */ |
| |
| tree |
| gfc_trans_flush (gfc_code * code) |
| { |
| return build_filepos (iocall[IOCALL_FLUSH], code); |
| } |
| |
| |
| /* Translate the non-IOLENGTH form of an INQUIRE statement. */ |
| |
| tree |
| gfc_trans_inquire (gfc_code * code) |
| { |
| stmtblock_t block, post_block; |
| gfc_inquire *p; |
| tree tmp, var; |
| unsigned int mask = 0; |
| |
| gfc_start_block (&block); |
| gfc_init_block (&post_block); |
| |
| var = gfc_create_var (st_parameter[IOPARM_ptype_inquire].type, |
| "inquire_parm"); |
| |
| set_error_locus (&block, var, &code->loc); |
| p = code->ext.inquire; |
| |
| /* Sanity check. */ |
| if (p->unit && p->file) |
| gfc_error ("INQUIRE statement at %L cannot contain both FILE and UNIT specifiers.", &code->loc); |
| |
| if (p->unit) |
| set_parameter_value (&block, var, IOPARM_common_unit, p->unit); |
| else |
| set_parameter_const (&block, var, IOPARM_common_unit, 0); |
| |
| if (p->file) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_file, |
| p->file); |
| |
| if (p->iomsg) |
| mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg, |
| p->iomsg); |
| |
| if (p->iostat) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat, |
| p->iostat); |
| |
| if (p->exist) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_exist, |
| p->exist); |
| |
| if (p->opened) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_opened, |
| p->opened); |
| |
| if (p->number) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_number, |
| p->number); |
| |
| if (p->named) |
| mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_named, |
| p->named); |
| |
| if (p->name) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_name, |
| p->name); |
| |
| if (p->access) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_access, |
| p->access); |
| |
| if (p->sequential) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_sequential, |
| p->sequential); |
| |
| if (p->direct) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_direct, |
| p->direct); |
| |
| if (p->form) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_form, |
| p->form); |
| |
| if (p->formatted) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_formatted, |
| p->formatted); |
| |
| if (p->unformatted) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_unformatted, |
| p->unformatted); |
| |
| if (p->recl) |
| mask |= set_parameter_ref (&block, &post_block, var, |
| IOPARM_inquire_recl_out, p->recl); |
| |
| if (p->nextrec) |
| mask |= set_parameter_ref (&block, &post_block, var, |
| IOPARM_inquire_nextrec, p->nextrec); |
| |
| if (p->blank) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_blank, |
| p->blank); |
| |
| if (p->position) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_position, |
| p->position); |
| |
| if (p->action) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_action, |
| p->action); |
| |
| if (p->read) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_read, |
| p->read); |
| |
| if (p->write) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_write, |
| p->write); |
| |
| if (p->readwrite) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_readwrite, |
| p->readwrite); |
| |
| if (p->delim) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_delim, |
| p->delim); |
| |
| if (p->pad) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_pad, |
| p->pad); |
| |
| if (p->err) |
| mask |= IOPARM_common_err; |
| |
| if (p->convert) |
| mask |= set_string (&block, &post_block, var, IOPARM_inquire_convert, |
| p->convert); |
| |
| if (p->strm_pos) |
| mask |= set_parameter_ref (&block, &post_block, var, |
| IOPARM_inquire_strm_pos_out, p->strm_pos); |
| |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| |
| tmp = build_fold_addr_expr (var); |
| tmp = gfc_chainon_list (NULL_TREE, tmp); |
| tmp = build_function_call_expr (iocall[IOCALL_INQUIRE], tmp); |
| gfc_add_expr_to_block (&block, tmp); |
| |
| gfc_add_block_to_block (&block, &post_block); |
| |
| io_result (&block, var, p->err, NULL, NULL); |
| |
| return gfc_finish_block (&block); |
| } |
| |
| static gfc_expr * |
| gfc_new_nml_name_expr (const char * name) |
| { |
| gfc_expr * nml_name; |
| |
| nml_name = gfc_get_expr(); |
| nml_name->ref = NULL; |
| nml_name->expr_type = EXPR_CONSTANT; |
| nml_name->ts.kind = gfc_default_character_kind; |
| nml_name->ts.type = BT_CHARACTER; |
| nml_name->value.character.length = strlen(name); |
| nml_name->value.character.string = gfc_getmem (strlen (name) + 1); |
| strcpy (nml_name->value.character.string, name); |
| |
| return nml_name; |
| } |
| |
| /* nml_full_name builds up the fully qualified name of a |
| derived type component. */ |
| |
| static char* |
| nml_full_name (const char* var_name, const char* cmp_name) |
| { |
| int full_name_length; |
| char * full_name; |
| |
| full_name_length = strlen (var_name) + strlen (cmp_name) + 1; |
| full_name = (char*)gfc_getmem (full_name_length + 1); |
| strcpy (full_name, var_name); |
| full_name = strcat (full_name, "%"); |
| full_name = strcat (full_name, cmp_name); |
| return full_name; |
| } |
| |
| /* nml_get_addr_expr builds an address expression from the |
| gfc_symbol or gfc_component backend_decl's. An offset is |
| provided so that the address of an element of an array of |
| derived types is returned. This is used in the runtime to |
| determine that span of the derived type. */ |
| |
| static tree |
| nml_get_addr_expr (gfc_symbol * sym, gfc_component * c, |
| tree base_addr) |
| { |
| tree decl = NULL_TREE; |
| tree tmp; |
| tree itmp; |
| int array_flagged; |
| int dummy_arg_flagged; |
| |
| if (sym) |
| { |
| sym->attr.referenced = 1; |
| decl = gfc_get_symbol_decl (sym); |
| } |
| else |
| decl = c->backend_decl; |
| |
| gcc_assert (decl && ((TREE_CODE (decl) == FIELD_DECL |
| || TREE_CODE (decl) == VAR_DECL |
| || TREE_CODE (decl) == PARM_DECL) |
| || TREE_CODE (decl) == COMPONENT_REF)); |
| |
| tmp = decl; |
| |
| /* Build indirect reference, if dummy argument. */ |
| |
| dummy_arg_flagged = POINTER_TYPE_P (TREE_TYPE(tmp)); |
| |
| itmp = (dummy_arg_flagged) ? build_fold_indirect_ref (tmp) : tmp; |
| |
| /* If an array, set flag and use indirect ref. if built. */ |
| |
| array_flagged = (TREE_CODE (TREE_TYPE (itmp)) == ARRAY_TYPE |
| && !TYPE_STRING_FLAG (TREE_TYPE (itmp))); |
| |
| if (array_flagged) |
| tmp = itmp; |
| |
| /* Treat the component of a derived type, using base_addr for |
| the derived type. */ |
| |
| if (TREE_CODE (decl) == FIELD_DECL) |
| tmp = build3 (COMPONENT_REF, TREE_TYPE (tmp), |
| base_addr, tmp, NULL_TREE); |
| |
| /* If we have a derived type component, a reference to the first |
| element of the array is built. This is done so that base_addr, |
| used in the build of the component reference, always points to |
| a RECORD_TYPE. */ |
| |
| if (array_flagged) |
| tmp = gfc_build_array_ref (tmp, gfc_index_zero_node); |
| |
| /* Now build the address expression. */ |
| |
| tmp = build_fold_addr_expr (tmp); |
| |
| /* If scalar dummy, resolve indirect reference now. */ |
| |
| if (dummy_arg_flagged && !array_flagged) |
| tmp = build_fold_indirect_ref (tmp); |
| |
| gcc_assert (tmp && POINTER_TYPE_P (TREE_TYPE (tmp))); |
| |
| return tmp; |
| } |
| |
| /* For an object VAR_NAME whose base address is BASE_ADDR, generate a |
| call to iocall[IOCALL_SET_NML_VAL]. For derived type variable, recursively |
| generate calls to iocall[IOCALL_SET_NML_VAL] for each component. */ |
| |
| #define NML_FIRST_ARG(a) args = gfc_chainon_list (NULL_TREE, a) |
| #define NML_ADD_ARG(a) args = gfc_chainon_list (args, a) |
| #define IARG(i) build_int_cst (gfc_array_index_type, i) |
| |
| static void |
| transfer_namelist_element (stmtblock_t * block, const char * var_name, |
| gfc_symbol * sym, gfc_component * c, |
| tree base_addr) |
| { |
| gfc_typespec * ts = NULL; |
| gfc_array_spec * as = NULL; |
| tree addr_expr = NULL; |
| tree dt = NULL; |
| tree string; |
| tree tmp; |
| tree args; |
| tree dtype; |
| tree dt_parm_addr; |
| int n_dim; |
| int itype; |
| int rank = 0; |
| |
| gcc_assert (sym || c); |
| |
| /* Build the namelist object name. */ |
| |
| string = gfc_build_cstring_const (var_name); |
| string = gfc_build_addr_expr (pchar_type_node, string); |
| |
| /* Build ts, as and data address using symbol or component. */ |
| |
| ts = (sym) ? &sym->ts : &c->ts; |
| as = (sym) ? sym->as : c->as; |
| |
| addr_expr = nml_get_addr_expr (sym, c, base_addr); |
| |
| if (as) |
| rank = as->rank; |
| |
| if (rank) |
| { |
| dt = TREE_TYPE ((sym) ? sym->backend_decl : c->backend_decl); |
| dtype = gfc_get_dtype (dt); |
| } |
| else |
| { |
| itype = GFC_DTYPE_UNKNOWN; |
| |
| switch (ts->type) |
| |
| { |
| case BT_INTEGER: |
| itype = GFC_DTYPE_INTEGER; |
| break; |
| case BT_LOGICAL: |
| itype = GFC_DTYPE_LOGICAL; |
| break; |
| case BT_REAL: |
| itype = GFC_DTYPE_REAL; |
| break; |
| case BT_COMPLEX: |
| itype = GFC_DTYPE_COMPLEX; |
| break; |
| case BT_DERIVED: |
| itype = GFC_DTYPE_DERIVED; |
| break; |
| case BT_CHARACTER: |
| itype = GFC_DTYPE_CHARACTER; |
| break; |
| default: |
| gcc_unreachable (); |
| } |
| |
| dtype = IARG (itype << GFC_DTYPE_TYPE_SHIFT); |
| } |
| |
| /* Build up the arguments for the transfer call. |
| The call for the scalar part transfers: |
| (address, name, type, kind or string_length, dtype) */ |
| |
| dt_parm_addr = build_fold_addr_expr (dt_parm); |
| NML_FIRST_ARG (dt_parm_addr); |
| NML_ADD_ARG (addr_expr); |
| NML_ADD_ARG (string); |
| NML_ADD_ARG (IARG (ts->kind)); |
| |
| if (ts->type == BT_CHARACTER) |
| NML_ADD_ARG (ts->cl->backend_decl); |
| else |
| NML_ADD_ARG (build_int_cst (gfc_charlen_type_node, 0)); |
| |
| NML_ADD_ARG (dtype); |
| tmp = build_function_call_expr (iocall[IOCALL_SET_NML_VAL], args); |
| gfc_add_expr_to_block (block, tmp); |
| |
| /* If the object is an array, transfer rank times: |
| (null pointer, name, stride, lbound, ubound) */ |
| |
| for ( n_dim = 0 ; n_dim < rank ; n_dim++ ) |
| { |
| NML_FIRST_ARG (dt_parm_addr); |
| NML_ADD_ARG (IARG (n_dim)); |
| NML_ADD_ARG (GFC_TYPE_ARRAY_STRIDE (dt, n_dim)); |
| NML_ADD_ARG (GFC_TYPE_ARRAY_LBOUND (dt, n_dim)); |
| NML_ADD_ARG (GFC_TYPE_ARRAY_UBOUND (dt, n_dim)); |
| tmp = build_function_call_expr (iocall[IOCALL_SET_NML_VAL_DIM], args); |
| gfc_add_expr_to_block (block, tmp); |
| } |
| |
| if (ts->type == BT_DERIVED) |
| { |
| gfc_component *cmp; |
| |
| /* Provide the RECORD_TYPE to build component references. */ |
| |
| tree expr = build_fold_indirect_ref (addr_expr); |
| |
| for (cmp = ts->derived->components; cmp; cmp = cmp->next) |
| { |
| char *full_name = nml_full_name (var_name, cmp->name); |
| transfer_namelist_element (block, |
| full_name, |
| NULL, cmp, expr); |
| gfc_free (full_name); |
| } |
| } |
| } |
| |
| #undef IARG |
| #undef NML_ADD_ARG |
| #undef NML_FIRST_ARG |
| |
| /* Create a data transfer statement. Not all of the fields are valid |
| for both reading and writing, but improper use has been filtered |
| out by now. */ |
| |
| static tree |
| build_dt (tree function, gfc_code * code) |
| { |
| stmtblock_t block, post_block, post_end_block, post_iu_block; |
| gfc_dt *dt; |
| tree tmp, var; |
| gfc_expr *nmlname; |
| gfc_namelist *nml; |
| unsigned int mask = 0; |
| |
| gfc_start_block (&block); |
| gfc_init_block (&post_block); |
| gfc_init_block (&post_end_block); |
| gfc_init_block (&post_iu_block); |
| |
| var = gfc_create_var (st_parameter[IOPARM_ptype_dt].type, "dt_parm"); |
| |
| set_error_locus (&block, var, &code->loc); |
| |
| if (last_dt == IOLENGTH) |
| { |
| gfc_inquire *inq; |
| |
| inq = code->ext.inquire; |
| |
| /* First check that preconditions are met. */ |
| gcc_assert (inq != NULL); |
| gcc_assert (inq->iolength != NULL); |
| |
| /* Connect to the iolength variable. */ |
| mask |= set_parameter_ref (&block, &post_end_block, var, |
| IOPARM_dt_iolength, inq->iolength); |
| dt = NULL; |
| } |
| else |
| { |
| dt = code->ext.dt; |
| gcc_assert (dt != NULL); |
| } |
| |
| if (dt && dt->io_unit) |
| { |
| if (dt->io_unit->ts.type == BT_CHARACTER) |
| { |
| mask |= set_internal_unit (&block, &post_iu_block, |
| var, dt->io_unit); |
| set_parameter_const (&block, var, IOPARM_common_unit, 0); |
| } |
| else |
| set_parameter_value (&block, var, IOPARM_common_unit, dt->io_unit); |
| } |
| else |
| set_parameter_const (&block, var, IOPARM_common_unit, 0); |
| |
| if (dt) |
| { |
| if (dt->rec) |
| mask |= set_parameter_value (&block, var, IOPARM_dt_rec, dt->rec); |
| |
| if (dt->advance) |
| mask |= set_string (&block, &post_block, var, IOPARM_dt_advance, |
| dt->advance); |
| |
| if (dt->format_expr) |
| mask |= set_string (&block, &post_end_block, var, IOPARM_dt_format, |
| dt->format_expr); |
| |
| if (dt->format_label) |
| { |
| if (dt->format_label == &format_asterisk) |
| mask |= IOPARM_dt_list_format; |
| else |
| mask |= set_string (&block, &post_block, var, IOPARM_dt_format, |
| dt->format_label->format); |
| } |
| |
| if (dt->iomsg) |
| mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg, |
| dt->iomsg); |
| |
| if (dt->iostat) |
| mask |= set_parameter_ref (&block, &post_end_block, var, |
| IOPARM_common_iostat, dt->iostat); |
| |
| if (dt->size) |
| mask |= set_parameter_ref (&block, &post_end_block, var, |
| IOPARM_dt_size, dt->size); |
| |
| if (dt->err) |
| mask |= IOPARM_common_err; |
| |
| if (dt->eor) |
| mask |= IOPARM_common_eor; |
| |
| if (dt->end) |
| mask |= IOPARM_common_end; |
| |
| if (dt->namelist) |
| { |
| if (dt->format_expr || dt->format_label) |
| gfc_internal_error ("build_dt: format with namelist"); |
| |
| nmlname = gfc_new_nml_name_expr (dt->namelist->name); |
| |
| mask |= set_string (&block, &post_block, var, IOPARM_dt_namelist_name, |
| nmlname); |
| |
| if (last_dt == READ) |
| mask |= IOPARM_dt_namelist_read_mode; |
| |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| |
| dt_parm = var; |
| |
| for (nml = dt->namelist->namelist; nml; nml = nml->next) |
| transfer_namelist_element (&block, nml->sym->name, nml->sym, |
| NULL, NULL); |
| } |
| else |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| } |
| else |
| set_parameter_const (&block, var, IOPARM_common_flags, mask); |
| |
| tmp = build_fold_addr_expr (var); |
| tmp = gfc_chainon_list (NULL_TREE, tmp); |
| tmp = build_function_call_expr (function, tmp); |
| gfc_add_expr_to_block (&block, tmp); |
| |
| gfc_add_block_to_block (&block, &post_block); |
| |
| dt_parm = var; |
| dt_post_end_block = &post_end_block; |
| |
| gfc_add_expr_to_block (&block, gfc_trans_code (code->block->next)); |
| |
| gfc_add_block_to_block (&block, &post_iu_block); |
| |
| dt_parm = NULL; |
| dt_post_end_block = NULL; |
| |
| return gfc_finish_block (&block); |
| } |
| |
| |
| /* Translate the IOLENGTH form of an INQUIRE statement. We treat |
| this as a third sort of data transfer statement, except that |
| lengths are summed instead of actually transferring any data. */ |
| |
| tree |
| gfc_trans_iolength (gfc_code * code) |
| { |
| last_dt = IOLENGTH; |
| return build_dt (iocall[IOCALL_IOLENGTH], code); |
| } |
| |
| |
| /* Translate a READ statement. */ |
| |
| tree |
| gfc_trans_read (gfc_code * code) |
| { |
| last_dt = READ; |
| return build_dt (iocall[IOCALL_READ], code); |
| } |
| |
| |
| /* Translate a WRITE statement */ |
| |
| tree |
| gfc_trans_write (gfc_code * code) |
| { |
| last_dt = WRITE; |
| return build_dt (iocall[IOCALL_WRITE], code); |
| } |
| |
| |
| /* Finish a data transfer statement. */ |
| |
| tree |
| gfc_trans_dt_end (gfc_code * code) |
| { |
| tree function, tmp; |
| stmtblock_t block; |
| |
| gfc_init_block (&block); |
| |
| switch (last_dt) |
| { |
| case READ: |
| function = iocall[IOCALL_READ_DONE]; |
| break; |
| |
| case WRITE: |
| function = iocall[IOCALL_WRITE_DONE]; |
| break; |
| |
| case IOLENGTH: |
| function = iocall[IOCALL_IOLENGTH_DONE]; |
| break; |
| |
| default: |
| gcc_unreachable (); |
| } |
| |
| tmp = build_fold_addr_expr (dt_parm); |
| tmp = gfc_chainon_list (NULL_TREE, tmp); |
| tmp = build_function_call_expr (function, tmp); |
| gfc_add_expr_to_block (&block, tmp); |
| gfc_add_block_to_block (&block, dt_post_end_block); |
| gfc_init_block (dt_post_end_block); |
| |
| if (last_dt != IOLENGTH) |
| { |
| gcc_assert (code->ext.dt != NULL); |
| io_result (&block, dt_parm, code->ext.dt->err, |
| code->ext.dt->end, code->ext.dt->eor); |
| } |
| |
| return gfc_finish_block (&block); |
| } |
| |
| static void |
| transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr); |
| |
| /* Given an array field in a derived type variable, generate the code |
| for the loop that iterates over array elements, and the code that |
| accesses those array elements. Use transfer_expr to generate code |
| for transferring that element. Because elements may also be |
| derived types, transfer_expr and transfer_array_component are mutually |
| recursive. */ |
| |
| static tree |
| transfer_array_component (tree expr, gfc_component * cm) |
| { |
| tree tmp; |
| stmtblock_t body; |
| stmtblock_t block; |
| gfc_loopinfo loop; |
| int n; |
| gfc_ss *ss; |
| gfc_se se; |
| |
| gfc_start_block (&block); |
| gfc_init_se (&se, NULL); |
| |
| /* Create and initialize Scalarization Status. Unlike in |
| gfc_trans_transfer, we can't simply use gfc_walk_expr to take |
| care of this task, because we don't have a gfc_expr at hand. |
| Build one manually, as in gfc_trans_subarray_assign. */ |
| |
| ss = gfc_get_ss (); |
| ss->type = GFC_SS_COMPONENT; |
| ss->expr = NULL; |
| ss->shape = gfc_get_shape (cm->as->rank); |
| ss->next = gfc_ss_terminator; |
| ss->data.info.dimen = cm->as->rank; |
| ss->data.info.descriptor = expr; |
| ss->data.info.data = gfc_conv_array_data (expr); |
| ss->data.info.offset = gfc_conv_array_offset (expr); |
| for (n = 0; n < cm->as->rank; n++) |
| { |
| ss->data.info.dim[n] = n; |
| ss->data.info.start[n] = gfc_conv_array_lbound (expr, n); |
| ss->data.info.stride[n] = gfc_index_one_node; |
| |
| mpz_init (ss->shape[n]); |
| mpz_sub (ss->shape[n], cm->as->upper[n]->value.integer, |
| cm->as->lower[n]->value.integer); |
| mpz_add_ui (ss->shape[n], ss->shape[n], 1); |
| } |
| |
| /* Once we got ss, we use scalarizer to create the loop. */ |
| |
| gfc_init_loopinfo (&loop); |
| gfc_add_ss_to_loop (&loop, ss); |
| gfc_conv_ss_startstride (&loop); |
| gfc_conv_loop_setup (&loop); |
| gfc_mark_ss_chain_used (ss, 1); |
| gfc_start_scalarized_body (&loop, &body); |
| |
| gfc_copy_loopinfo_to_se (&se, &loop); |
| se.ss = ss; |
| |
| /* gfc_conv_tmp_array_ref assumes that se.expr contains the array. */ |
| se.expr = expr; |
| gfc_conv_tmp_array_ref (&se); |
| |
| /* Now se.expr contains an element of the array. Take the address and pass |
| it to the IO routines. */ |
| tmp = build_fold_addr_expr (se.expr); |
| transfer_expr (&se, &cm->ts, tmp); |
| |
| /* We are done now with the loop body. Wrap up the scalarizer and |
| return. */ |
| |
| gfc_add_block_to_block (&body, &se.pre); |
| gfc_add_block_to_block (&body, &se.post); |
| |
| gfc_trans_scalarizing_loops (&loop, &body); |
| |
| gfc_add_block_to_block (&block, &loop.pre); |
| gfc_add_block_to_block (&block, &loop.post); |
| |
| for (n = 0; n < cm->as->rank; n++) |
| mpz_clear (ss->shape[n]); |
| gfc_free (ss->shape); |
| |
| gfc_cleanup_loop (&loop); |
| |
| return gfc_finish_block (&block); |
| } |
| |
| /* Generate the call for a scalar transfer node. */ |
| |
| static void |
| transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr) |
| { |
| tree args, tmp, function, arg2, field, expr; |
| gfc_component *c; |
| int kind; |
| |
| kind = ts->kind; |
| function = NULL; |
| arg2 = NULL; |
| |
| switch (ts->type) |
| { |
| case BT_INTEGER: |
| arg2 = build_int_cst (NULL_TREE, kind); |
| function = iocall[IOCALL_X_INTEGER]; |
| break; |
| |
| case BT_REAL: |
| arg2 = build_int_cst (NULL_TREE, kind); |
| function = iocall[IOCALL_X_REAL]; |
| break; |
| |
| case BT_COMPLEX: |
| arg2 = build_int_cst (NULL_TREE, kind); |
| function = iocall[IOCALL_X_COMPLEX]; |
| break; |
| |
| case BT_LOGICAL: |
| arg2 = build_int_cst (NULL_TREE, kind); |
| function = iocall[IOCALL_X_LOGICAL]; |
| break; |
| |
| case BT_CHARACTER: |
| case BT_HOLLERITH: |
| if (se->string_length) |
| arg2 = se->string_length; |
| else |
| { |
| tmp = build_fold_indirect_ref (addr_expr); |
| gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE); |
| arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp))); |
| } |
| function = iocall[IOCALL_X_CHARACTER]; |
| break; |
| |
| case BT_DERIVED: |
| /* Recurse into the elements of the derived type. */ |
| expr = gfc_evaluate_now (addr_expr, &se->pre); |
| expr = build_fold_indirect_ref (expr); |
| |
| for (c = ts->derived->components; c; c = c->next) |
| { |
| field = c->backend_decl; |
| gcc_assert (field && TREE_CODE (field) == FIELD_DECL); |
| |
| tmp = build3 (COMPONENT_REF, TREE_TYPE (field), expr, field, |
| NULL_TREE); |
| |
| if (c->dimension) |
| { |
| tmp = transfer_array_component (tmp, c); |
| gfc_add_expr_to_block (&se->pre, tmp); |
| } |
| else |
| { |
| if (!c->pointer) |
| tmp = build_fold_addr_expr (tmp); |
| transfer_expr (se, &c->ts, tmp); |
| } |
| } |
| return; |
| |
| default: |
| internal_error ("Bad IO basetype (%d)", ts->type); |
| } |
| |
| tmp = build_fold_addr_expr (dt_parm); |
| args = gfc_chainon_list (NULL_TREE, tmp); |
| args = gfc_chainon_list (args, addr_expr); |
| args = gfc_chainon_list (args, arg2); |
| |
| tmp = build_function_call_expr (function, args); |
| gfc_add_expr_to_block (&se->pre, tmp); |
| gfc_add_block_to_block (&se->pre, &se->post); |
| |
| } |
| |
| |
| /* Generate a call to pass an array descriptor to the IO library. The |
| array should be of one of the intrinsic types. */ |
| |
| static void |
| transfer_array_desc (gfc_se * se, gfc_typespec * ts, tree addr_expr) |
| { |
| tree args, tmp, charlen_arg, kind_arg; |
| |
| if (ts->type == BT_CHARACTER) |
| charlen_arg = se->string_length; |
| else |
| charlen_arg = build_int_cstu (NULL_TREE, 0); |
| |
| kind_arg = build_int_cst (NULL_TREE, ts->kind); |
| |
| tmp = build_fold_addr_expr (dt_parm); |
| args = gfc_chainon_list (NULL_TREE, tmp); |
| args = gfc_chainon_list (args, addr_expr); |
| args = gfc_chainon_list (args, kind_arg); |
| args = gfc_chainon_list (args, charlen_arg); |
| tmp = build_function_call_expr (iocall[IOCALL_X_ARRAY], args); |
| gfc_add_expr_to_block (&se->pre, tmp); |
| gfc_add_block_to_block (&se->pre, &se->post); |
| } |
| |
| |
| /* gfc_trans_transfer()-- Translate a TRANSFER code node */ |
| |
| tree |
| gfc_trans_transfer (gfc_code * code) |
| { |
| stmtblock_t block, body; |
| gfc_loopinfo loop; |
| gfc_expr *expr; |
| gfc_ref *ref; |
| gfc_ss *ss; |
| gfc_se se; |
| tree tmp; |
| |
| gfc_start_block (&block); |
| gfc_init_block (&body); |
| |
| expr = code->expr; |
| ss = gfc_walk_expr (expr); |
| |
| ref = NULL; |
| gfc_init_se (&se, NULL); |
| |
| if (ss == gfc_ss_terminator) |
| { |
| /* Transfer a scalar value. */ |
| gfc_conv_expr_reference (&se, expr); |
| transfer_expr (&se, &expr->ts, se.expr); |
| } |
| else |
| { |
| /* Transfer an array. If it is an array of an intrinsic |
| type, pass the descriptor to the library. Otherwise |
| scalarize the transfer. */ |
| if (expr->ref) |
| { |
| for (ref = expr->ref; ref && ref->type != REF_ARRAY; |
| ref = ref->next); |
| gcc_assert (ref->type == REF_ARRAY); |
| } |
| |
| if (expr->ts.type != BT_DERIVED && ref && ref->next == NULL) |
| { |
| /* Get the descriptor. */ |
| gfc_conv_expr_descriptor (&se, expr, ss); |
| tmp = build_fold_addr_expr (se.expr); |
| transfer_array_desc (&se, &expr->ts, tmp); |
| goto finish_block_label; |
| } |
| |
| /* Initialize the scalarizer. */ |
| gfc_init_loopinfo (&loop); |
| gfc_add_ss_to_loop (&loop, ss); |
| |
| /* Initialize the loop. */ |
| gfc_conv_ss_startstride (&loop); |
| gfc_conv_loop_setup (&loop); |
| |
| /* The main loop body. */ |
| gfc_mark_ss_chain_used (ss, 1); |
| gfc_start_scalarized_body (&loop, &body); |
| |
| gfc_copy_loopinfo_to_se (&se, &loop); |
| se.ss = ss; |
| |
| gfc_conv_expr_reference (&se, expr); |
| transfer_expr (&se, &expr->ts, se.expr); |
| } |
| |
| finish_block_label: |
| |
| gfc_add_block_to_block (&body, &se.pre); |
| gfc_add_block_to_block (&body, &se.post); |
| |
| if (se.ss == NULL) |
| tmp = gfc_finish_block (&body); |
| else |
| { |
| gcc_assert (se.ss == gfc_ss_terminator); |
| gfc_trans_scalarizing_loops (&loop, &body); |
| |
| gfc_add_block_to_block (&loop.pre, &loop.post); |
| tmp = gfc_finish_block (&loop.pre); |
| gfc_cleanup_loop (&loop); |
| } |
| |
| gfc_add_expr_to_block (&block, tmp); |
| |
| return gfc_finish_block (&block); |
| } |
| |
| #include "gt-fortran-trans-io.h" |
| |