/* dwarf2out.h - Various declarations for functions found in dwarf2out.c
- Copyright (C) 1998, 1999, 2000, 2003, 2007, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1998-2020 Free Software Foundation, Inc.
This file is part of GCC.
typedef struct die_struct *dw_die_ref;
typedef const struct die_struct *const_dw_die_ref;
-typedef struct dw_val_struct *dw_val_ref;
-typedef struct dw_cfi_struct *dw_cfi_ref;
-typedef struct dw_loc_descr_struct *dw_loc_descr_ref;
+typedef struct dw_val_node *dw_val_ref;
+typedef struct dw_cfi_node *dw_cfi_ref;
+typedef struct dw_loc_descr_node *dw_loc_descr_ref;
typedef struct dw_loc_list_struct *dw_loc_list_ref;
+typedef struct dw_discr_list_node *dw_discr_list_ref;
+typedef wide_int *wide_int_ptr;
/* Call frames are described using a sequence of Call Frame
dw_cfi_oprnd_reg_num,
dw_cfi_oprnd_offset,
dw_cfi_oprnd_addr,
- dw_cfi_oprnd_loc
+ dw_cfi_oprnd_loc,
+ dw_cfi_oprnd_cfa_loc
};
-typedef union GTY(()) dw_cfi_oprnd_struct {
+typedef union GTY(()) {
unsigned int GTY ((tag ("dw_cfi_oprnd_reg_num"))) dw_cfi_reg_num;
HOST_WIDE_INT GTY ((tag ("dw_cfi_oprnd_offset"))) dw_cfi_offset;
const char * GTY ((tag ("dw_cfi_oprnd_addr"))) dw_cfi_addr;
- struct dw_loc_descr_struct * GTY ((tag ("dw_cfi_oprnd_loc"))) dw_cfi_loc;
-}
-dw_cfi_oprnd;
+ struct dw_loc_descr_node * GTY ((tag ("dw_cfi_oprnd_loc"))) dw_cfi_loc;
+ struct dw_cfa_location * GTY ((tag ("dw_cfi_oprnd_cfa_loc")))
+ dw_cfi_cfa_loc;
+} dw_cfi_oprnd;
-typedef struct GTY(()) dw_cfi_struct {
+struct GTY(()) dw_cfi_node {
enum dwarf_call_frame_info dw_cfi_opc;
dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd1_desc (%1.dw_cfi_opc)")))
dw_cfi_oprnd1;
dw_cfi_oprnd GTY ((desc ("dw_cfi_oprnd2_desc (%1.dw_cfi_opc)")))
dw_cfi_oprnd2;
-}
-dw_cfi_node;
+};
-DEF_VEC_P (dw_cfi_ref);
-DEF_VEC_ALLOC_P (dw_cfi_ref, heap);
-DEF_VEC_ALLOC_P (dw_cfi_ref, gc);
-typedef VEC(dw_cfi_ref, gc) *cfi_vec;
+typedef vec<dw_cfi_ref, va_gc> *cfi_vec;
-typedef struct dw_fde_struct *dw_fde_ref;
+typedef struct dw_fde_node *dw_fde_ref;
/* All call frame descriptions (FDE's) in the GCC generated DWARF
refer to a single Common Information Entry (CIE), defined at
CIE obviates the need to keep track of multiple CIE's
in the DWARF generation routines below. */
-typedef struct GTY(()) dw_fde_struct {
+struct GTY(()) dw_fde_node {
tree decl;
const char *dw_fde_begin;
const char *dw_fde_current_label;
/* True iff dw_fde_second_begin label is in text_section or
cold_text_section. */
unsigned second_in_std_section : 1;
-}
-dw_fde_node;
+};
/* This is how we define the location of the CFA. We use to handle it
It can now be either REG + CFA_OFFSET or *(REG + BASE_OFFSET) + CFA_OFFSET.
Instead of passing around REG and OFFSET, we pass a copy
of this structure. */
-typedef struct cfa_loc {
- HOST_WIDE_INT offset;
- HOST_WIDE_INT base_offset;
+struct GTY(()) dw_cfa_location {
+ poly_int64_pod offset;
+ poly_int64_pod base_offset;
+ /* REG is in DWARF_FRAME_REGNUM space, *not* normal REGNO space. */
unsigned int reg;
BOOL_BITFIELD indirect : 1; /* 1 if CFA is accessed via a dereference. */
BOOL_BITFIELD in_use : 1; /* 1 if a saved cfa is stored here. */
-} dw_cfa_location;
+};
/* Each DIE may have a series of attribute/value pairs. Values
enum dw_val_class
{
+ dw_val_class_none,
dw_val_class_addr,
dw_val_class_offset,
dw_val_class_loc,
dw_val_class_const,
dw_val_class_unsigned_const,
dw_val_class_const_double,
+ dw_val_class_wide_int,
dw_val_class_vec,
dw_val_class_flag,
dw_val_class_die_ref,
dw_val_class_lineptr,
dw_val_class_str,
dw_val_class_macptr,
+ dw_val_class_loclistsptr,
dw_val_class_file,
dw_val_class_data8,
dw_val_class_decl_ref,
- dw_val_class_vms_delta
+ dw_val_class_vms_delta,
+ dw_val_class_high_pc,
+ dw_val_class_discr_value,
+ dw_val_class_discr_list,
+ dw_val_class_const_implicit,
+ dw_val_class_unsigned_const_implicit,
+ dw_val_class_file_implicit,
+ dw_val_class_view_list,
+ dw_val_class_symview
};
/* Describe a floating point constant value, or a vector constant value. */
-typedef struct GTY(()) dw_vec_struct {
- unsigned char * GTY((length ("%h.length"))) array;
+struct GTY(()) dw_vec_const {
+ void * GTY((atomic)) array;
unsigned length;
unsigned elt_size;
-}
-dw_vec_const;
+};
+
+/* Describe a single value that a discriminant can match.
+
+ Discriminants (in the "record variant part" meaning) are scalars.
+ dw_discr_list_ref and dw_discr_value are a mean to describe a set of
+ discriminant values that are matched by a particular variant.
+
+ Discriminants can be signed or unsigned scalars, and can be discriminants
+ values. Both have to be consistent, though. */
+
+struct GTY(()) dw_discr_value {
+ int pos; /* Whether the discriminant value is positive (unsigned). */
+ union
+ {
+ HOST_WIDE_INT GTY ((tag ("0"))) sval;
+ unsigned HOST_WIDE_INT GTY ((tag ("1"))) uval;
+ }
+ GTY ((desc ("%1.pos"))) v;
+};
+
+struct addr_table_entry;
/* The dw_val_node describes an attribute's value, as it is
represented internally. */
-typedef struct GTY(()) dw_val_struct {
+struct GTY(()) dw_val_node {
enum dw_val_class val_class;
+ struct addr_table_entry * GTY(()) val_entry;
union dw_val_struct_union
{
rtx GTY ((tag ("dw_val_class_addr"))) val_addr;
unsigned HOST_WIDE_INT GTY ((tag ("dw_val_class_offset"))) val_offset;
dw_loc_list_ref GTY ((tag ("dw_val_class_loc_list"))) val_loc_list;
+ dw_die_ref GTY ((tag ("dw_val_class_view_list"))) val_view_list;
dw_loc_descr_ref GTY ((tag ("dw_val_class_loc"))) val_loc;
HOST_WIDE_INT GTY ((default)) val_int;
- unsigned HOST_WIDE_INT GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned;
+ unsigned HOST_WIDE_INT
+ GTY ((tag ("dw_val_class_unsigned_const"))) val_unsigned;
double_int GTY ((tag ("dw_val_class_const_double"))) val_double;
+ wide_int_ptr GTY ((tag ("dw_val_class_wide_int"))) val_wide;
dw_vec_const GTY ((tag ("dw_val_class_vec"))) val_vec;
struct dw_val_die_union
{
char * GTY ((tag ("dw_val_class_lbl_id"))) val_lbl_id;
unsigned char GTY ((tag ("dw_val_class_flag"))) val_flag;
struct dwarf_file_data * GTY ((tag ("dw_val_class_file"))) val_file;
+ struct dwarf_file_data *
+ GTY ((tag ("dw_val_class_file_implicit"))) val_file_implicit;
unsigned char GTY ((tag ("dw_val_class_data8"))) val_data8[8];
tree GTY ((tag ("dw_val_class_decl_ref"))) val_decl_ref;
struct dw_val_vms_delta_union
char * lbl1;
char * lbl2;
} GTY ((tag ("dw_val_class_vms_delta"))) val_vms_delta;
+ dw_discr_value GTY ((tag ("dw_val_class_discr_value"))) val_discr_value;
+ dw_discr_list_ref GTY ((tag ("dw_val_class_discr_list"))) val_discr_list;
+ char * GTY ((tag ("dw_val_class_symview"))) val_symbolic_view;
}
GTY ((desc ("%1.val_class"))) v;
-}
-dw_val_node;
+};
/* Locations in memory are described using a sequence of stack machine
operations. */
-typedef struct GTY(()) dw_loc_descr_struct {
+struct GTY((chain_next ("%h.dw_loc_next"))) dw_loc_descr_node {
dw_loc_descr_ref dw_loc_next;
ENUM_BITFIELD (dwarf_location_atom) dw_loc_opc : 8;
/* Used to distinguish DW_OP_addr with a direct symbol relocation
from DW_OP_addr with a dtp-relative symbol relocation. */
unsigned int dtprel : 1;
+ /* For DW_OP_pick, DW_OP_dup and DW_OP_over operations: true iff.
+ it targets a DWARF prodecure argument. In this case, it needs to be
+ relocated according to the current frame offset. */
+ unsigned int frame_offset_rel : 1;
int dw_loc_addr;
dw_val_node dw_loc_oprnd1;
dw_val_node dw_loc_oprnd2;
-}
-dw_loc_descr_node;
+};
+/* A variant (inside a record variant part) is selected when the corresponding
+ discriminant matches its set of values (see the comment for dw_discr_value).
+ The following datastructure holds such matching information. */
+
+struct GTY(()) dw_discr_list_node {
+ dw_discr_list_ref dw_discr_next;
+
+ dw_discr_value dw_discr_lower_bound;
+ dw_discr_value dw_discr_upper_bound;
+ /* This node represents only the value in dw_discr_lower_bound when it's
+ zero. It represents the range between the two fields (bounds included)
+ otherwise. */
+ int dw_discr_range;
+};
/* Interface from dwarf2out.c to dwarf2cfi.c. */
-extern struct dw_loc_descr_struct *build_cfa_loc
- (dw_cfa_location *, HOST_WIDE_INT);
-extern struct dw_loc_descr_struct *build_cfa_aligned_loc
- (dw_cfa_location *, HOST_WIDE_INT offset, HOST_WIDE_INT alignment);
-extern struct dw_loc_descr_struct *mem_loc_descriptor
- (rtx, enum machine_mode mode, enum machine_mode mem_mode,
+extern struct dw_loc_descr_node *build_cfa_loc
+ (dw_cfa_location *, poly_int64);
+extern struct dw_loc_descr_node *build_cfa_aligned_loc
+ (dw_cfa_location *, poly_int64, HOST_WIDE_INT);
+extern struct dw_loc_descr_node *mem_loc_descriptor
+ (rtx, machine_mode mode, machine_mode mem_mode,
enum var_init_status);
-extern enum machine_mode get_address_mode (rtx mem);
+extern bool loc_descr_equal_p (dw_loc_descr_ref, dw_loc_descr_ref);
extern dw_fde_ref dwarf2out_alloc_current_fde (void);
extern unsigned long size_of_locs (dw_loc_descr_ref);
extern bool cfa_equal_p (const dw_cfa_location *, const dw_cfa_location *);
extern void output_cfi (dw_cfi_ref, dw_fde_ref, int);
-extern void output_cfis (cfi_vec, int, bool, dw_fde_ref, bool);
extern GTY(()) cfi_vec cie_cfi_vec;
extern enum dw_cfi_oprnd_type dw_cfi_oprnd2_desc
(enum dwarf_call_frame_info cfi);
-extern void output_cfi_directive (FILE *f, struct dw_cfi_struct *cfi);
+extern void output_cfi_directive (FILE *f, struct dw_cfi_node *cfi);
-extern void dwarf2out_decl (tree);
extern void dwarf2out_emit_cfi (dw_cfi_ref cfi);
extern void debug_dwarf (void);
struct die_struct;
extern void debug_dwarf_die (struct die_struct *);
+extern void debug_dwarf_loc_descr (dw_loc_descr_ref);
+extern void debug (die_struct &ref);
+extern void debug (die_struct *ptr);
extern void dwarf2out_set_demangle_name_func (const char *(*) (const char *));
#ifdef VMS_DEBUGGING_INFO
extern void dwarf2out_vms_debug_main_pointer (void);
#endif
+enum array_descr_ordering
+{
+ array_descr_ordering_default,
+ array_descr_ordering_row_major,
+ array_descr_ordering_column_major
+};
+
+#define DWARF2OUT_ARRAY_DESCR_INFO_MAX_DIMEN 16
+
struct array_descr_info
{
int ndimensions;
+ enum array_descr_ordering ordering;
tree element_type;
tree base_decl;
tree data_location;
tree allocated;
tree associated;
+ tree stride;
+ tree rank;
+ bool stride_in_bits;
struct array_descr_dimen
{
+ /* GCC uses sizetype for array indices, so lower_bound and upper_bound
+ will likely be "sizetype" values. However, bounds may have another
+ type in the original source code. */
+ tree bounds_type;
tree lower_bound;
tree upper_bound;
+
+ /* Only Fortran uses more than one dimension for array types. For other
+ languages, the stride can be rather specified for the whole array. */
tree stride;
- } dimen[10];
+ } dimen[DWARF2OUT_ARRAY_DESCR_INFO_MAX_DIMEN];
};
+enum fixed_point_scale_factor
+{
+ fixed_point_scale_factor_binary,
+ fixed_point_scale_factor_decimal,
+ fixed_point_scale_factor_arbitrary
+};
+
+struct fixed_point_type_info
+{
+ /* A scale factor is the value one has to multiply with physical data in
+ order to get the fixed point logical data. The DWARF standard enables one
+ to encode it in three ways. */
+ enum fixed_point_scale_factor scale_factor_kind;
+ union
+ {
+ /* For binary scale factor, the scale factor is: 2 ** binary. */
+ int binary;
+ /* For decimal scale factor, the scale factor is: 10 ** binary. */
+ int decimal;
+ /* For arbitrary scale factor, the scale factor is:
+ numerator / denominator. */
+ struct
+ {
+ unsigned HOST_WIDE_INT numerator;
+ HOST_WIDE_INT denominator;
+ } arbitrary;
+ } scale_factor;
+};
+
+void dwarf2out_c_finalize (void);
+
#endif /* GCC_DWARF2OUT_H */
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