/* Target description support for GDB.
- Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2006-2013 Free Software Foundation, Inc.
Contributed by CodeSourcery.
#include "vec.h"
#include "xml-support.h"
#include "xml-tdesc.h"
+#include "osabi.h"
#include "gdb_assert.h"
#include "gdb_obstack.h"
#include "hashtab.h"
+#include "inferior.h"
/* Types. */
char *type;
/* The target-described type corresponding to TYPE, if found. */
- struct type *gdb_type;
+ struct tdesc_type *tdesc_type;
} *tdesc_reg_p;
DEF_VEC_P(tdesc_reg_p);
/* A named type from a target description. */
-typedef struct type *type_p;
-DEF_VEC_P(type_p);
+
+typedef struct tdesc_type_field
+{
+ char *name;
+ struct tdesc_type *type;
+ int start, end;
+} tdesc_type_field;
+DEF_VEC_O(tdesc_type_field);
+
+typedef struct tdesc_type_flag
+{
+ char *name;
+ int start;
+} tdesc_type_flag;
+DEF_VEC_O(tdesc_type_flag);
+
+typedef struct tdesc_type
+{
+ /* The name of this type. */
+ char *name;
+
+ /* Identify the kind of this type. */
+ enum
+ {
+ /* Predefined types. */
+ TDESC_TYPE_INT8,
+ TDESC_TYPE_INT16,
+ TDESC_TYPE_INT32,
+ TDESC_TYPE_INT64,
+ TDESC_TYPE_INT128,
+ TDESC_TYPE_UINT8,
+ TDESC_TYPE_UINT16,
+ TDESC_TYPE_UINT32,
+ TDESC_TYPE_UINT64,
+ TDESC_TYPE_UINT128,
+ TDESC_TYPE_CODE_PTR,
+ TDESC_TYPE_DATA_PTR,
+ TDESC_TYPE_IEEE_SINGLE,
+ TDESC_TYPE_IEEE_DOUBLE,
+ TDESC_TYPE_ARM_FPA_EXT,
+ TDESC_TYPE_I387_EXT,
+
+ /* Types defined by a target feature. */
+ TDESC_TYPE_VECTOR,
+ TDESC_TYPE_STRUCT,
+ TDESC_TYPE_UNION,
+ TDESC_TYPE_FLAGS
+ } kind;
+
+ /* Kind-specific data. */
+ union
+ {
+ /* Vector type. */
+ struct
+ {
+ struct tdesc_type *type;
+ int count;
+ } v;
+
+ /* Struct or union type. */
+ struct
+ {
+ VEC(tdesc_type_field) *fields;
+ LONGEST size;
+ } u;
+
+ /* Flags type. */
+ struct
+ {
+ VEC(tdesc_type_flag) *flags;
+ LONGEST size;
+ } f;
+ } u;
+} *tdesc_type_p;
+DEF_VEC_P(tdesc_type_p);
/* A feature from a target description. Each feature is a collection
of other elements, e.g. registers and types. */
VEC(tdesc_reg_p) *registers;
/* The types associated with this feature. */
- VEC(type_p) *types;
+ VEC(tdesc_type_p) *types;
} *tdesc_feature_p;
DEF_VEC_P(tdesc_feature_p);
+/* A compatible architecture from a target description. */
+typedef const struct bfd_arch_info *arch_p;
+DEF_VEC_P(arch_p);
+
/* A target description. */
struct target_desc
/* The architecture reported by the target, if any. */
const struct bfd_arch_info *arch;
+ /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN
+ otherwise. */
+ enum gdb_osabi osabi;
+
+ /* The list of compatible architectures reported by the target. */
+ VEC(arch_p) *compatible;
+
/* Any architecture-specific properties specified by the target. */
VEC(property_s) *properties;
target description may be shared by multiple architectures, but
this data is private to one gdbarch. */
+typedef struct tdesc_arch_reg
+{
+ struct tdesc_reg *reg;
+ struct type *type;
+} tdesc_arch_reg;
+DEF_VEC_O(tdesc_arch_reg);
+
struct tdesc_arch_data
{
- /* A list of registers, indexed by GDB's internal register number.
+ /* A list of register/type pairs, indexed by GDB's internal register number.
During initialization of the gdbarch this list is used to store
registers which the architecture assigns a fixed register number.
Registers which are NULL in this array, or off the end, are
treated as zero-sized and nameless (i.e. placeholders in the
numbering). */
- VEC(tdesc_reg_p) *registers;
+ VEC(tdesc_arch_reg) *arch_regs;
/* Functions which report the register name, type, and reggroups for
pseudo-registers. */
gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p;
};
-/* Global state. These variables are associated with the current
- target; if GDB adds support for multiple simultaneous targets, then
- these variables should become target-specific data. */
+/* Info about an inferior's target description. There's one of these
+ for each inferior. */
-/* A flag indicating that a description has already been fetched from
- the current target, so it should not be queried again. */
+struct target_desc_info
+{
+ /* A flag indicating that a description has already been fetched
+ from the target, so it should not be queried again. */
-static int target_desc_fetched;
+ int fetched;
-/* The description fetched from the current target, or NULL if the
- current target did not supply any description. Only valid when
- target_desc_fetched is set. Only the description initialization
- code should access this; normally, the description should be
- accessed through the gdbarch object. */
+ /* The description fetched from the target, or NULL if the target
+ did not supply any description. Only valid when
+ target_desc_fetched is set. Only the description initialization
+ code should access this; normally, the description should be
+ accessed through the gdbarch object. */
-static const struct target_desc *current_target_desc;
+ const struct target_desc *tdesc;
-/* Other global variables. */
+ /* The filename to read a target description from, as set by "set
+ tdesc filename ..." */
-/* The filename to read a target description from. */
+ char *filename;
+};
-static char *target_description_filename;
+/* Get the inferior INF's target description info, allocating one on
+ the stop if necessary. */
+
+static struct target_desc_info *
+get_tdesc_info (struct inferior *inf)
+{
+ if (inf->tdesc_info == NULL)
+ inf->tdesc_info = XCNEW (struct target_desc_info);
+ return inf->tdesc_info;
+}
/* A handle for architecture-specific data associated with the
target description (see struct tdesc_arch_data). */
static struct gdbarch_data *tdesc_data;
+/* See target-descriptions.h. */
+
+int
+target_desc_info_from_user_p (struct target_desc_info *info)
+{
+ return info != NULL && info->filename != NULL;
+}
+
+/* See target-descriptions.h. */
+
+void
+copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf)
+{
+ struct target_desc_info *src = get_tdesc_info (srcinf);
+ struct target_desc_info *dest = get_tdesc_info (destinf);
+
+ dest->fetched = src->fetched;
+ dest->tdesc = src->tdesc;
+ dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL;
+}
+
+/* See target-descriptions.h. */
+
+void
+target_desc_info_free (struct target_desc_info *tdesc_info)
+{
+ if (tdesc_info != NULL)
+ {
+ xfree (tdesc_info->filename);
+ xfree (tdesc_info);
+ }
+}
+
+/* Convenience helper macros. */
+
+#define target_desc_fetched \
+ get_tdesc_info (current_inferior ())->fetched
+#define current_target_desc \
+ get_tdesc_info (current_inferior ())->tdesc
+#define target_description_filename \
+ get_tdesc_info (current_inferior ())->filename
+
+/* The string manipulated by the "set tdesc filename ..." command. */
+
+static char *tdesc_filename_cmd_string;
+
/* Fetch the current target's description, and switch the current
architecture to one which incorporates that description. */
/* The current architecture should not have any target description
specified. It should have been cleared, e.g. when we
disconnected from the previous target. */
- gdb_assert (gdbarch_target_desc (current_gdbarch) == NULL);
+ gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL);
/* First try to fetch an XML description from the user-specified
file. */
{
struct tdesc_arch_data *data;
- data = gdbarch_data (current_gdbarch, tdesc_data);
+ data = gdbarch_data (target_gdbarch (), tdesc_data);
if (tdesc_has_registers (current_target_desc)
- && data->registers == NULL)
+ && data->arch_regs == NULL)
warning (_("Target-supplied registers are not supported "
"by the current architecture"));
}
return NULL;
}
+
+/* Return non-zero if this target description is compatible
+ with the given BFD architecture. */
+
+int
+tdesc_compatible_p (const struct target_desc *target_desc,
+ const struct bfd_arch_info *arch)
+{
+ const struct bfd_arch_info *compat;
+ int ix;
+
+ for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat);
+ ix++)
+ {
+ if (compat == arch
+ || arch->compatible (arch, compat)
+ || compat->compatible (compat, arch))
+ return 1;
+ }
+
+ return 0;
+}
\f
/* Direct accessors for target descriptions. */
{
return target_desc->arch;
}
+
+/* Return the OSABI associated with this target description, or
+ GDB_OSABI_UNKNOWN if no osabi was specified. */
+
+enum gdb_osabi
+tdesc_osabi (const struct target_desc *target_desc)
+{
+ return target_desc->osabi;
+}
+
\f
/* Return 1 if this target description includes any registers. */
return feature->name;
}
-/* Predefined types. Note that none of these types depend on the
- current architecture; some of the builtin_type_foo variables are
- swapped based on the architecture. */
-static struct
+/* Predefined types. */
+static struct tdesc_type tdesc_predefined_types[] =
{
- const char *name;
- struct type **type;
-} tdesc_predefined_types[] =
- {
- { "int8", &builtin_type_int8 },
- { "int16", &builtin_type_int16 },
- { "int32", &builtin_type_int32 },
- { "int64", &builtin_type_int64 },
- { "int128", &builtin_type_int128 },
- { "uint8", &builtin_type_uint8 },
- { "uint16", &builtin_type_uint16 },
- { "uint32", &builtin_type_uint32 },
- { "uint64", &builtin_type_uint64 },
- { "uint128", &builtin_type_uint128 },
- { "ieee_single", &builtin_type_ieee_single },
- { "ieee_double", &builtin_type_ieee_double },
- { "arm_fpa_ext", &builtin_type_arm_ext }
- };
+ { "int8", TDESC_TYPE_INT8 },
+ { "int16", TDESC_TYPE_INT16 },
+ { "int32", TDESC_TYPE_INT32 },
+ { "int64", TDESC_TYPE_INT64 },
+ { "int128", TDESC_TYPE_INT128 },
+ { "uint8", TDESC_TYPE_UINT8 },
+ { "uint16", TDESC_TYPE_UINT16 },
+ { "uint32", TDESC_TYPE_UINT32 },
+ { "uint64", TDESC_TYPE_UINT64 },
+ { "uint128", TDESC_TYPE_UINT128 },
+ { "code_ptr", TDESC_TYPE_CODE_PTR },
+ { "data_ptr", TDESC_TYPE_DATA_PTR },
+ { "ieee_single", TDESC_TYPE_IEEE_SINGLE },
+ { "ieee_double", TDESC_TYPE_IEEE_DOUBLE },
+ { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT },
+ { "i387_ext", TDESC_TYPE_I387_EXT }
+};
/* Return the type associated with ID in the context of FEATURE, or
NULL if none. */
-struct type *
+struct tdesc_type *
tdesc_named_type (const struct tdesc_feature *feature, const char *id)
{
int ix;
- struct type *gdb_type;
+ struct tdesc_type *type;
/* First try target-defined types. */
- for (ix = 0; VEC_iterate (type_p, feature->types, ix, gdb_type); ix++)
- if (strcmp (TYPE_NAME (gdb_type), id) == 0)
- return gdb_type;
+ for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++)
+ if (strcmp (type->name, id) == 0)
+ return type;
/* Next try the predefined types. */
for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++)
if (strcmp (tdesc_predefined_types[ix].name, id) == 0)
- return *tdesc_predefined_types[ix].type;
+ return &tdesc_predefined_types[ix];
return NULL;
}
+
+/* Lookup type associated with ID. */
+
+struct type *
+tdesc_find_type (struct gdbarch *gdbarch, const char *id)
+{
+ struct tdesc_arch_reg *reg;
+ struct tdesc_arch_data *data;
+ int i, num_regs;
+
+ data = gdbarch_data (gdbarch, tdesc_data);
+ num_regs = VEC_length (tdesc_arch_reg, data->arch_regs);
+ for (i = 0; i < num_regs; i++)
+ {
+ reg = VEC_index (tdesc_arch_reg, data->arch_regs, i);
+ if (reg->reg
+ && reg->reg->tdesc_type
+ && reg->type
+ && strcmp (id, reg->reg->tdesc_type->name) == 0)
+ return reg->type;
+ }
+
+ return NULL;
+}
+
+/* Construct, if necessary, and return the GDB type implementing target
+ type TDESC_TYPE for architecture GDBARCH. */
+
+static struct type *
+tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type)
+{
+ struct type *type;
+
+ switch (tdesc_type->kind)
+ {
+ /* Predefined types. */
+ case TDESC_TYPE_INT8:
+ return builtin_type (gdbarch)->builtin_int8;
+
+ case TDESC_TYPE_INT16:
+ return builtin_type (gdbarch)->builtin_int16;
+
+ case TDESC_TYPE_INT32:
+ return builtin_type (gdbarch)->builtin_int32;
+
+ case TDESC_TYPE_INT64:
+ return builtin_type (gdbarch)->builtin_int64;
+
+ case TDESC_TYPE_INT128:
+ return builtin_type (gdbarch)->builtin_int128;
+
+ case TDESC_TYPE_UINT8:
+ return builtin_type (gdbarch)->builtin_uint8;
+
+ case TDESC_TYPE_UINT16:
+ return builtin_type (gdbarch)->builtin_uint16;
+
+ case TDESC_TYPE_UINT32:
+ return builtin_type (gdbarch)->builtin_uint32;
+
+ case TDESC_TYPE_UINT64:
+ return builtin_type (gdbarch)->builtin_uint64;
+
+ case TDESC_TYPE_UINT128:
+ return builtin_type (gdbarch)->builtin_uint128;
+
+ case TDESC_TYPE_CODE_PTR:
+ return builtin_type (gdbarch)->builtin_func_ptr;
+
+ case TDESC_TYPE_DATA_PTR:
+ return builtin_type (gdbarch)->builtin_data_ptr;
+
+ default:
+ break;
+ }
+
+ type = tdesc_find_type (gdbarch, tdesc_type->name);
+ if (type)
+ return type;
+
+ switch (tdesc_type->kind)
+ {
+ case TDESC_TYPE_IEEE_SINGLE:
+ return arch_float_type (gdbarch, -1, "builtin_type_ieee_single",
+ floatformats_ieee_single);
+
+ case TDESC_TYPE_IEEE_DOUBLE:
+ return arch_float_type (gdbarch, -1, "builtin_type_ieee_double",
+ floatformats_ieee_double);
+
+ case TDESC_TYPE_ARM_FPA_EXT:
+ return arch_float_type (gdbarch, -1, "builtin_type_arm_ext",
+ floatformats_arm_ext);
+
+ case TDESC_TYPE_I387_EXT:
+ return arch_float_type (gdbarch, -1, "builtin_type_i387_ext",
+ floatformats_i387_ext);
+
+ /* Types defined by a target feature. */
+ case TDESC_TYPE_VECTOR:
+ {
+ struct type *type, *field_type;
+
+ field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type);
+ type = init_vector_type (field_type, tdesc_type->u.v.count);
+ TYPE_NAME (type) = xstrdup (tdesc_type->name);
+
+ return type;
+ }
+
+ case TDESC_TYPE_STRUCT:
+ {
+ struct type *type, *field_type;
+ struct tdesc_type_field *f;
+ int ix;
+
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ TYPE_NAME (type) = xstrdup (tdesc_type->name);
+ TYPE_TAG_NAME (type) = TYPE_NAME (type);
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f);
+ ix++)
+ {
+ if (f->type == NULL)
+ {
+ /* Bitfield. */
+ struct field *fld;
+ struct type *field_type;
+ int bitsize, total_size;
+
+ /* This invariant should be preserved while creating
+ types. */
+ gdb_assert (tdesc_type->u.u.size != 0);
+ if (tdesc_type->u.u.size > 4)
+ field_type = builtin_type (gdbarch)->builtin_uint64;
+ else
+ field_type = builtin_type (gdbarch)->builtin_uint32;
+
+ fld = append_composite_type_field_raw (type, xstrdup (f->name),
+ field_type);
+
+ /* For little-endian, BITPOS counts from the LSB of
+ the structure and marks the LSB of the field. For
+ big-endian, BITPOS counts from the MSB of the
+ structure and marks the MSB of the field. Either
+ way, it is the number of bits to the "left" of the
+ field. To calculate this in big-endian, we need
+ the total size of the structure. */
+ bitsize = f->end - f->start + 1;
+ total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT;
+ if (gdbarch_bits_big_endian (gdbarch))
+ SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize);
+ else
+ SET_FIELD_BITPOS (fld[0], f->start);
+ FIELD_BITSIZE (fld[0]) = bitsize;
+ }
+ else
+ {
+ field_type = tdesc_gdb_type (gdbarch, f->type);
+ append_composite_type_field (type, xstrdup (f->name),
+ field_type);
+ }
+ }
+
+ if (tdesc_type->u.u.size != 0)
+ TYPE_LENGTH (type) = tdesc_type->u.u.size;
+ return type;
+ }
+
+ case TDESC_TYPE_UNION:
+ {
+ struct type *type, *field_type;
+ struct tdesc_type_field *f;
+ int ix;
+
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+ TYPE_NAME (type) = xstrdup (tdesc_type->name);
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f);
+ ix++)
+ {
+ field_type = tdesc_gdb_type (gdbarch, f->type);
+ append_composite_type_field (type, xstrdup (f->name), field_type);
+
+ /* If any of the children of a union are vectors, flag the
+ union as a vector also. This allows e.g. a union of two
+ vector types to show up automatically in "info vector". */
+ if (TYPE_VECTOR (field_type))
+ TYPE_VECTOR (type) = 1;
+ }
+ return type;
+ }
+
+ case TDESC_TYPE_FLAGS:
+ {
+ struct tdesc_type_flag *f;
+ int ix;
+
+ type = arch_flags_type (gdbarch, tdesc_type->name,
+ tdesc_type->u.f.size);
+ for (ix = 0;
+ VEC_iterate (tdesc_type_flag, tdesc_type->u.f.flags, ix, f);
+ ix++)
+ /* Note that contrary to the function name, this call will
+ just set the properties of an already-allocated
+ field. */
+ append_flags_type_flag (type, f->start,
+ *f->name ? f->name : NULL);
+
+ return type;
+ }
+ }
+
+ internal_error (__FILE__, __LINE__,
+ "Type \"%s\" has an unknown kind %d",
+ tdesc_type->name, tdesc_type->kind);
+}
\f
/* Support for registers from target descriptions. */
{
struct tdesc_arch_data *data = data_untyped;
- VEC_free (tdesc_reg_p, data->registers);
+ VEC_free (tdesc_arch_reg, data->arch_regs);
xfree (data);
}
struct tdesc_arch_data *data,
int regno, const char *name)
{
+ struct tdesc_arch_reg arch_reg = { 0 };
struct tdesc_reg *reg = tdesc_find_register_early (feature, name);
if (reg == NULL)
return 0;
/* Make sure the vector includes a REGNO'th element. */
- while (regno >= VEC_length (tdesc_reg_p, data->registers))
- VEC_safe_push (tdesc_reg_p, data->registers, NULL);
- VEC_replace (tdesc_reg_p, data->registers, regno, reg);
+ while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs))
+ VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg);
+
+ arch_reg.reg = reg;
+ VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg);
+ return 1;
+}
+
+/* Search FEATURE for a register named NAME, but do not assign a fixed
+ register number to it. */
+
+int
+tdesc_unnumbered_register (const struct tdesc_feature *feature,
+ const char *name)
+{
+ struct tdesc_reg *reg = tdesc_find_register_early (feature, name);
+
+ if (reg == NULL)
+ return 0;
+
return 1;
}
/* Look up a register by its GDB internal register number. */
-static struct tdesc_reg *
-tdesc_find_register (struct gdbarch *gdbarch, int regno)
+static struct tdesc_arch_reg *
+tdesc_find_arch_register (struct gdbarch *gdbarch, int regno)
{
- struct tdesc_reg *reg;
struct tdesc_arch_data *data;
data = gdbarch_data (gdbarch, tdesc_data);
- if (regno < VEC_length (tdesc_reg_p, data->registers))
- return VEC_index (tdesc_reg_p, data->registers, regno);
+ if (regno < VEC_length (tdesc_arch_reg, data->arch_regs))
+ return VEC_index (tdesc_arch_reg, data->arch_regs, regno);
else
return NULL;
}
+static struct tdesc_reg *
+tdesc_find_register (struct gdbarch *gdbarch, int regno)
+{
+ struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno);
+
+ return reg? reg->reg : NULL;
+}
+
/* Return the name of register REGNO, from the target description or
from an architecture-provided pseudo_register_name method. */
if (regno >= num_regs && regno < num_regs + num_pseudo_regs)
{
struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
gdb_assert (data->pseudo_register_name != NULL);
return data->pseudo_register_name (gdbarch, regno);
}
return "";
}
-static struct type *
+struct type *
tdesc_register_type (struct gdbarch *gdbarch, int regno)
{
- struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno);
+ struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno);
+ struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL;
int num_regs = gdbarch_num_regs (gdbarch);
int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch);
if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs)
{
struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
+
gdb_assert (data->pseudo_register_type != NULL);
return data->pseudo_register_type (gdbarch, regno);
}
if (reg == NULL)
/* Return "int0_t", since "void" has a misleading size of one. */
- return builtin_type_int0;
-
- /* First check for a predefined or target defined type. */
- if (reg->gdb_type)
- return reg->gdb_type;
+ return builtin_type (gdbarch)->builtin_int0;
- /* Next try size-sensitive type shortcuts. */
- if (strcmp (reg->type, "float") == 0)
+ if (arch_reg->type == NULL)
{
- if (reg->bitsize == gdbarch_float_bit (gdbarch))
- return builtin_type_float;
- else if (reg->bitsize == gdbarch_double_bit (gdbarch))
- return builtin_type_double;
- else if (reg->bitsize == gdbarch_long_double_bit (gdbarch))
- return builtin_type_long_double;
- }
- else if (strcmp (reg->type, "int") == 0)
- {
- if (reg->bitsize == gdbarch_long_bit (gdbarch))
- return builtin_type_long;
- else if (reg->bitsize == TARGET_CHAR_BIT)
- return builtin_type_char;
- else if (reg->bitsize == gdbarch_short_bit (gdbarch))
- return builtin_type_short;
- else if (reg->bitsize == gdbarch_int_bit (gdbarch))
- return builtin_type_int;
- else if (reg->bitsize == gdbarch_long_long_bit (gdbarch))
- return builtin_type_long_long;
- else if (reg->bitsize == gdbarch_ptr_bit (gdbarch))
- /* A bit desperate by this point... */
- return builtin_type_void_data_ptr;
+ /* First check for a predefined or target defined type. */
+ if (reg->tdesc_type)
+ arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type);
+
+ /* Next try size-sensitive type shortcuts. */
+ else if (strcmp (reg->type, "float") == 0)
+ {
+ if (reg->bitsize == gdbarch_float_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_float;
+ else if (reg->bitsize == gdbarch_double_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_double;
+ else if (reg->bitsize == gdbarch_long_double_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_long_double;
+ else
+ {
+ warning (_("Register \"%s\" has an unsupported size (%d bits)"),
+ reg->name, reg->bitsize);
+ arch_reg->type = builtin_type (gdbarch)->builtin_double;
+ }
+ }
+ else if (strcmp (reg->type, "int") == 0)
+ {
+ if (reg->bitsize == gdbarch_long_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_long;
+ else if (reg->bitsize == TARGET_CHAR_BIT)
+ arch_reg->type = builtin_type (gdbarch)->builtin_char;
+ else if (reg->bitsize == gdbarch_short_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_short;
+ else if (reg->bitsize == gdbarch_int_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_int;
+ else if (reg->bitsize == gdbarch_long_long_bit (gdbarch))
+ arch_reg->type = builtin_type (gdbarch)->builtin_long_long;
+ else if (reg->bitsize == gdbarch_ptr_bit (gdbarch))
+ /* A bit desperate by this point... */
+ arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr;
+ else
+ {
+ warning (_("Register \"%s\" has an unsupported size (%d bits)"),
+ reg->name, reg->bitsize);
+ arch_reg->type = builtin_type (gdbarch)->builtin_long;
+ }
+ }
+
+ if (arch_reg->type == NULL)
+ internal_error (__FILE__, __LINE__,
+ "Register \"%s\" has an unknown type \"%s\"",
+ reg->name, reg->type);
}
- else if (strcmp (reg->type, "code_ptr") == 0)
- return builtin_type_void_func_ptr;
- else if (strcmp (reg->type, "data_ptr") == 0)
- return builtin_type_void_data_ptr;
- else
- internal_error (__FILE__, __LINE__,
- "Register \"%s\" has an unknown type \"%s\"",
- reg->name, reg->type);
- warning (_("Register \"%s\" has an unsupported size (%d bits)"),
- reg->name, reg->bitsize);
- return builtin_type_long;
+ return arch_reg->type;
}
static int
if (regno >= num_regs && regno < num_regs + num_pseudo_regs)
{
struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data);
- gdb_assert (data->pseudo_register_reggroup_p != NULL);
- return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup);
+
+ if (data->pseudo_register_reggroup_p != NULL)
+ return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup);
+ /* Otherwise fall through to the default reggroup_p. */
}
ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup);
struct tdesc_arch_data *early_data)
{
int num_regs = gdbarch_num_regs (gdbarch);
- int i, ixf, ixr;
+ int ixf, ixr;
struct tdesc_feature *feature;
struct tdesc_reg *reg;
struct tdesc_arch_data *data;
+ struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 };
htab_t reg_hash;
/* We can't use the description for registers if it doesn't describe
gdb_assert (tdesc_has_registers (target_desc));
data = gdbarch_data (gdbarch, tdesc_data);
- data->registers = early_data->registers;
+ data->arch_regs = early_data->arch_regs;
xfree (early_data);
/* Build up a set of all registers, so that we can assign register
/* Remove any registers which were assigned numbers by the
architecture. */
- for (ixr = 0; VEC_iterate (tdesc_reg_p, data->registers, ixr, reg); ixr++)
- if (reg)
- htab_remove_elt (reg_hash, reg);
+ for (ixr = 0;
+ VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg);
+ ixr++)
+ if (arch_reg->reg)
+ htab_remove_elt (reg_hash, arch_reg->reg);
/* Assign numbers to the remaining registers and add them to the
list of registers. The new numbers are always above gdbarch_num_regs.
Iterate over the features, not the hash table, so that the order
matches that in the target description. */
- gdb_assert (VEC_length (tdesc_reg_p, data->registers) <= num_regs);
- while (VEC_length (tdesc_reg_p, data->registers) < num_regs)
- VEC_safe_push (tdesc_reg_p, data->registers, NULL);
+ gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs);
+ while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs)
+ VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg);
for (ixf = 0;
VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature);
ixf++)
ixr++)
if (htab_find (reg_hash, reg) != NULL)
{
- VEC_safe_push (tdesc_reg_p, data->registers, reg);
+ new_arch_reg.reg = reg;
+ VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg);
num_regs++;
}
/* If the register's type is target-defined, look it up now. We may not
have easy access to the containing feature when we want it later. */
- reg->gdb_type = tdesc_named_type (feature, reg->type);
+ reg->tdesc_type = tdesc_named_type (feature, reg->type);
VEC_safe_push (tdesc_reg_p, feature->registers, reg);
}
static void
+tdesc_free_type (struct tdesc_type *type)
+{
+ switch (type->kind)
+ {
+ case TDESC_TYPE_STRUCT:
+ case TDESC_TYPE_UNION:
+ {
+ struct tdesc_type_field *f;
+ int ix;
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f);
+ ix++)
+ xfree (f->name);
+
+ VEC_free (tdesc_type_field, type->u.u.fields);
+ }
+ break;
+
+ case TDESC_TYPE_FLAGS:
+ {
+ struct tdesc_type_flag *f;
+ int ix;
+
+ for (ix = 0;
+ VEC_iterate (tdesc_type_flag, type->u.f.flags, ix, f);
+ ix++)
+ xfree (f->name);
+
+ VEC_free (tdesc_type_flag, type->u.f.flags);
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ xfree (type->name);
+ xfree (type);
+}
+
+struct tdesc_type *
+tdesc_create_vector (struct tdesc_feature *feature, const char *name,
+ struct tdesc_type *field_type, int count)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_VECTOR;
+ type->u.v.type = field_type;
+ type->u.v.count = count;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+struct tdesc_type *
+tdesc_create_struct (struct tdesc_feature *feature, const char *name)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_STRUCT;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+/* Set the total length of TYPE. Structs which contain bitfields may
+ omit the reserved bits, so the end of the last field may not
+ suffice. */
+
+void
+tdesc_set_struct_size (struct tdesc_type *type, LONGEST size)
+{
+ gdb_assert (type->kind == TDESC_TYPE_STRUCT);
+ type->u.u.size = size;
+}
+
+struct tdesc_type *
+tdesc_create_union (struct tdesc_feature *feature, const char *name)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_UNION;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+struct tdesc_type *
+tdesc_create_flags (struct tdesc_feature *feature, const char *name,
+ LONGEST size)
+{
+ struct tdesc_type *type = XZALLOC (struct tdesc_type);
+
+ type->name = xstrdup (name);
+ type->kind = TDESC_TYPE_FLAGS;
+ type->u.f.size = size;
+
+ VEC_safe_push (tdesc_type_p, feature->types, type);
+ return type;
+}
+
+/* Add a new field. Return a temporary pointer to the field, which
+ is only valid until the next call to tdesc_add_field (the vector
+ might be reallocated). */
+
+void
+tdesc_add_field (struct tdesc_type *type, const char *field_name,
+ struct tdesc_type *field_type)
+{
+ struct tdesc_type_field f = { 0 };
+
+ gdb_assert (type->kind == TDESC_TYPE_UNION
+ || type->kind == TDESC_TYPE_STRUCT);
+
+ f.name = xstrdup (field_name);
+ f.type = field_type;
+
+ VEC_safe_push (tdesc_type_field, type->u.u.fields, &f);
+}
+
+/* Add a new bitfield. */
+
+void
+tdesc_add_bitfield (struct tdesc_type *type, const char *field_name,
+ int start, int end)
+{
+ struct tdesc_type_field f = { 0 };
+
+ gdb_assert (type->kind == TDESC_TYPE_STRUCT);
+
+ f.name = xstrdup (field_name);
+ f.start = start;
+ f.end = end;
+
+ VEC_safe_push (tdesc_type_field, type->u.u.fields, &f);
+}
+
+void
+tdesc_add_flag (struct tdesc_type *type, int start,
+ const char *flag_name)
+{
+ struct tdesc_type_flag f = { 0 };
+
+ gdb_assert (type->kind == TDESC_TYPE_FLAGS);
+
+ f.name = xstrdup (flag_name);
+ f.start = start;
+
+ VEC_safe_push (tdesc_type_flag, type->u.f.flags, &f);
+}
+
+static void
tdesc_free_feature (struct tdesc_feature *feature)
{
struct tdesc_reg *reg;
+ struct tdesc_type *type;
int ix;
for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++)
tdesc_free_reg (reg);
VEC_free (tdesc_reg_p, feature->registers);
- /* There is no easy way to free xmalloc-allocated types, nor is
- there a way to allocate types on an obstack not associated with
- an objfile. Therefore we never free types. Since we only ever
- parse an identical XML document once, this memory leak is mostly
- contained. */
- VEC_free (type_p, feature->types);
+ for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++)
+ tdesc_free_type (type);
+ VEC_free (tdesc_type_p, feature->types);
xfree (feature->name);
xfree (feature);
return new_feature;
}
-void
-tdesc_record_type (struct tdesc_feature *feature, struct type *type)
-{
- /* The type's ID should be used as its TYPE_NAME. */
- gdb_assert (TYPE_NAME (type) != NULL);
-
- VEC_safe_push (type_p, feature->types, type);
-}
-
struct target_desc *
allocate_target_description (void)
{
}
VEC_free (property_s, target_desc->properties);
+ VEC_free (arch_p, target_desc->compatible);
+
xfree (target_desc);
}
}
void
+tdesc_add_compatible (struct target_desc *target_desc,
+ const struct bfd_arch_info *compatible)
+{
+ const struct bfd_arch_info *compat;
+ int ix;
+
+ /* If this instance of GDB is compiled without BFD support for the
+ compatible architecture, simply ignore it -- we would not be able
+ to handle it anyway. */
+ if (compatible == NULL)
+ return;
+
+ for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat);
+ ix++)
+ if (compat == compatible)
+ internal_error (__FILE__, __LINE__,
+ _("Attempted to add duplicate "
+ "compatible architecture \"%s\""),
+ compatible->printable_name);
+
+ VEC_safe_push (arch_p, target_desc->compatible, compatible);
+}
+
+void
set_tdesc_property (struct target_desc *target_desc,
const char *key, const char *value)
{
{
target_desc->arch = arch;
}
+
+void
+set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi)
+{
+ target_desc->osabi = osabi;
+}
\f
static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist;
set_tdesc_filename_cmd (char *args, int from_tty,
struct cmd_list_element *c)
{
+ xfree (target_description_filename);
+ target_description_filename = xstrdup (tdesc_filename_cmd_string);
+
target_clear_description ();
target_find_description ();
}
struct cmd_list_element *c,
const char *value)
{
+ value = target_description_filename;
+
if (value != NULL && *value != '\0')
- printf_filtered (_("\
-The target description will be read from \"%s\".\n"),
+ printf_filtered (_("The target description will be read from \"%s\".\n"),
value);
else
- printf_filtered (_("\
-The target description will be read from the target.\n"));
+ printf_filtered (_("The target description will be "
+ "read from the target.\n"));
}
static void
target_find_description ();
}
-static const char *
-tdesc_type_id (struct type *type)
-{
- int ix;
-
- for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++)
- if (TYPE_MAIN_TYPE (*tdesc_predefined_types[ix].type)
- == TYPE_MAIN_TYPE (type))
- return tdesc_predefined_types[ix].name;
-
- return TYPE_NAME (type);
-}
-
static void
maint_print_c_tdesc_cmd (char *args, int from_tty)
{
const struct target_desc *tdesc;
+ const struct bfd_arch_info *compatible;
const char *filename, *inp;
char *function, *outp;
struct property *prop;
struct tdesc_feature *feature;
struct tdesc_reg *reg;
- struct type *type;
+ struct tdesc_type *type;
+ struct tdesc_type_field *f;
+ struct tdesc_type_flag *flag;
int ix, ix2, ix3;
+ int printed_field_type = 0;
/* Use the global target-supplied description, not the current
architecture's. This lets a GDB for one architecture generate C
error (_("The current target description did not come from an XML file."));
filename = lbasename (target_description_filename);
- function = xmalloc (strlen (filename) + 1);
+ function = alloca (strlen (filename) + 1);
for (inp = filename, outp = function; *inp != '\0'; inp++)
if (*inp == '.')
break;
*outp = '\0';
/* Standard boilerplate. */
- printf_unfiltered ("/* THIS FILE IS GENERATED. Original: %s */\n\n",
- filename);
+ printf_unfiltered ("/* THIS FILE IS GENERATED. "
+ "-*- buffer-read-only: t -*- vi"
+ ":set ro:\n");
+ printf_unfiltered (" Original: %s */\n\n", filename);
printf_unfiltered ("#include \"defs.h\"\n");
- printf_unfiltered ("#include \"gdbtypes.h\"\n");
+ printf_unfiltered ("#include \"osabi.h\"\n");
printf_unfiltered ("#include \"target-descriptions.h\"\n");
printf_unfiltered ("\n");
printf_unfiltered
(" struct target_desc *result = allocate_target_description ();\n");
printf_unfiltered (" struct tdesc_feature *feature;\n");
- printf_unfiltered (" struct type *field_type, *type;\n");
+
+ /* Now we do some "filtering" in order to know which variables to
+ declare. This is needed because otherwise we would declare unused
+ variables `field_type' and `type'. */
+ for (ix = 0;
+ VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature);
+ ix++)
+ {
+ int printed_desc_type = 0;
+
+ for (ix2 = 0;
+ VEC_iterate (tdesc_type_p, feature->types, ix2, type);
+ ix2++)
+ {
+ if (!printed_field_type)
+ {
+ printf_unfiltered (" struct tdesc_type *field_type;\n");
+ printed_field_type = 1;
+ }
+
+ if (type->kind == TDESC_TYPE_UNION
+ && VEC_length (tdesc_type_field, type->u.u.fields) > 0)
+ {
+ printf_unfiltered (" struct tdesc_type *type;\n");
+ printed_desc_type = 1;
+ break;
+ }
+ }
+
+ if (printed_desc_type)
+ break;
+ }
+
printf_unfiltered ("\n");
if (tdesc_architecture (tdesc) != NULL)
printf_unfiltered ("\n");
}
+ if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN
+ && tdesc_osabi (tdesc) < GDB_OSABI_INVALID)
+ {
+ printf_unfiltered
+ (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n",
+ gdbarch_osabi_name (tdesc_osabi (tdesc)));
+ printf_unfiltered ("\n");
+ }
+
+ for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible);
+ ix++)
+ {
+ printf_unfiltered
+ (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n",
+ compatible->printable_name);
+ }
+ if (ix)
+ printf_unfiltered ("\n");
+
for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop);
ix++)
{
VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature);
ix++)
{
- printf_unfiltered (" feature = tdesc_create_feature (result, \"%s\");\n",
+ printf_unfiltered (" \
+feature = tdesc_create_feature (result, \"%s\");\n",
feature->name);
for (ix2 = 0;
- VEC_iterate (type_p, feature->types, ix2, type);
+ VEC_iterate (tdesc_type_p, feature->types, ix2, type);
ix2++)
{
- switch (TYPE_CODE (type))
+ switch (type->kind)
{
- case TYPE_CODE_ARRAY:
+ case TDESC_TYPE_VECTOR:
printf_unfiltered
(" field_type = tdesc_named_type (feature, \"%s\");\n",
- tdesc_type_id (TYPE_TARGET_TYPE (type)));
- printf_unfiltered
- (" type = init_vector_type (field_type, %d);\n",
- TYPE_LENGTH (type) / TYPE_LENGTH (TYPE_TARGET_TYPE (type)));
+ type->u.v.type->name);
printf_unfiltered
- (" TYPE_NAME (type) = xstrdup (\"%s\");\n", TYPE_NAME (type));
+ (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n",
+ type->name, type->u.v.count);
break;
- case TYPE_CODE_UNION:
+ case TDESC_TYPE_UNION:
printf_unfiltered
- (" type = init_composite_type (NULL, TYPE_CODE_UNION);\n");
- printf_unfiltered
- (" TYPE_NAME (type) = xstrdup (\"%s\");\n", TYPE_NAME (type));
- for (ix3 = 0; ix3 < TYPE_NFIELDS (type); ix3++)
+ (" type = tdesc_create_union (feature, \"%s\");\n",
+ type->name);
+ for (ix3 = 0;
+ VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f);
+ ix3++)
{
printf_unfiltered
(" field_type = tdesc_named_type (feature, \"%s\");\n",
- tdesc_type_id (TYPE_FIELD_TYPE (type, ix3)));
+ f->type->name);
printf_unfiltered
- (" append_composite_type_field (type, "
- "xstrdup (\"%s\"), field_type);\n",
- TYPE_FIELD_NAME (type, ix3));
+ (" tdesc_add_field (type, \"%s\", field_type);\n",
+ f->name);
}
- if (TYPE_VECTOR (type))
+ break;
+ case TDESC_TYPE_FLAGS:
+ printf_unfiltered
+ (" field_type = tdesc_create_flags (feature, \"%s\", %d);\n",
+ type->name, (int) type->u.f.size);
+ for (ix3 = 0;
+ VEC_iterate (tdesc_type_flag, type->u.f.flags, ix3,
+ flag);
+ ix3++)
printf_unfiltered
- (" TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;\n");
+ (" tdesc_add_flag (field_type, %d, \"%s\");\n",
+ flag->start, flag->name);
break;
default:
- error (_("C output is not supported type \"%s\"."), TYPE_NAME (type));
+ error (_("C output is not supported type \"%s\"."), type->name);
}
- printf_unfiltered (" tdesc_record_type (feature, type);\n");
printf_unfiltered ("\n");
}
printf_unfiltered ("}\n");
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_target_descriptions;
+
void
_initialize_target_descriptions (void)
{
0 /* allow-unknown */, &unsetlist);
add_setshow_filename_cmd ("filename", class_obscure,
- &target_description_filename,
+ &tdesc_filename_cmd_string,
_("\
Set the file to read for an XML target description"), _("\
Show the file to read for an XML target description"), _("\
projects / external / binutils.git / blobdiff