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/tmp/gdb-8.1/gdb/target-float.c File Reference
#include "defs.h"
#include "gdbtypes.h"
#include "floatformat.h"
#include "target-float.h"
#include <cmath>
#include <limits>
#include <mpfr.h>
#include "dpd/decimal128.h"
#include "dpd/decimal64.h"
#include "dpd/decimal32.h"

Go to the source code of this file.

Classes

class  target_float_ops
 
class  host_float_ops< T >
 
struct  printf_length_modifier< T >
 
struct  printf_length_modifier< long double >
 
struct  scanf_length_modifier< T >
 
struct  scanf_length_modifier< double >
 
struct  scanf_length_modifier< long double >
 
class  mpfr_float_ops
 
class  mpfr_float_ops::gdb_mpfr
 
class  decimal_float_ops
 

Macros

#define FLOATFORMAT_CHAR_BIT   8
 
#define FLOATFORMAT_LARGEST_BYTES   16
 
#define MPFR_USE_INTMAX_T
 
#define MAX_DECIMAL_STRING   43
 
#define OPPOSITE_BYTE_ORDER   BFD_ENDIAN_BIG
 

Enumerations

enum  float_kind {
  float_nan, float_infinite, float_zero, float_normal,
  float_subnormal
}
 
enum  target_float_ops_kind {
  host_float = 0, host_double, host_long_double, binary,
  decimal
}
 

Functions

static size_t floatformat_totalsize_bytes (const struct floatformat *fmt)
 
static int floatformat_precision (const struct floatformat *fmt)
 
static enum floatformat_byteorders floatformat_normalize_byteorder (const struct floatformat *fmt, const void *from, void *to)
 
static unsigned long get_field (const bfd_byte *data, enum floatformat_byteorders order, unsigned int total_len, unsigned int start, unsigned int len)
 
static void put_field (unsigned char *data, enum floatformat_byteorders order, unsigned int total_len, unsigned int start, unsigned int len, unsigned long stuff_to_put)
 
static int floatformat_is_negative (const struct floatformat *fmt, const bfd_byte *uval)
 
static enum float_kind floatformat_classify (const struct floatformat *fmt, const bfd_byte *uval)
 
static const char * floatformat_mantissa (const struct floatformat *fmt, const bfd_byte *val)
 
static std::string floatformat_printf_format (const struct floatformat *fmt, const char *format, char length)
 
static void match_endianness (const gdb_byte *from, const struct type *type, gdb_byte *to)
 
static void set_decnumber_context (decContext *ctx, const struct type *type)
 
static void decimal_check_errors (decContext *ctx)
 
static void decimal_from_number (const decNumber *from, gdb_byte *to, const struct type *type)
 
static void decimal_to_number (const gdb_byte *addr, const struct type *type, decNumber *to)
 
static bool decimal_is_zero (const gdb_byte *addr, const struct type *type)
 
static bool target_float_same_category_p (const struct type *type1, const struct type *type2)
 
static bool target_float_same_format_p (const struct type *type1, const struct type *type2)
 
static int target_float_format_length (const struct type *type)
 
static enum target_float_ops_kind get_target_float_ops_kind (const struct type *type)
 
static const target_float_ops * get_target_float_ops (enum target_float_ops_kind kind)
 
static const target_float_ops * get_target_float_ops (const struct type *type)
 
static const target_float_ops * get_target_float_ops (const struct type *type1, const struct type *type2)
 
bool target_float_is_valid (const gdb_byte *addr, const struct type *type)
 
bool target_float_is_zero (const gdb_byte *addr, const struct type *type)
 
std::string target_float_to_string (const gdb_byte *addr, const struct type *type, const char *format)
 
bool target_float_from_string (gdb_byte *addr, const struct type *type, const std::string &string)
 
LONGEST target_float_to_longest (const gdb_byte *addr, const struct type *type)
 
void target_float_from_longest (gdb_byte *addr, const struct type *type, LONGEST val)
 
void target_float_from_ulongest (gdb_byte *addr, const struct type *type, ULONGEST val)
 
double target_float_to_host_double (const gdb_byte *addr, const struct type *type)
 
void target_float_from_host_double (gdb_byte *addr, const struct type *type, double val)
 
void target_float_convert (const gdb_byte *from, const struct type *from_type, gdb_byte *to, const struct type *to_type)
 
void target_float_binop (enum exp_opcode opcode, const gdb_byte *x, const struct type *type_x, const gdb_byte *y, const struct type *type_y, gdb_byte *res, const struct type *type_res)
 
int target_float_compare (const gdb_byte *x, const struct type *type_x, const gdb_byte *y, const struct type *type_y)
 

Variables

static const struct floatformat * host_float_format = GDB_HOST_FLOAT_FORMAT
 
static const struct floatformat * host_double_format = GDB_HOST_DOUBLE_FORMAT
 
static const struct floatformat * host_long_double_format = GDB_HOST_LONG_DOUBLE_FORMAT
 

Macro Definition Documentation

◆ FLOATFORMAT_CHAR_BIT

#define FLOATFORMAT_CHAR_BIT   8

Definition at line 83 of file target-float.c.

Referenced by floatformat_classify(), floatformat_is_negative(), floatformat_mantissa(), floatformat_normalize_byteorder(), floatformat_totalsize_bytes(), host_float_ops< T >::from_target(), mpfr_float_ops::from_target(), get_field(), put_field(), host_float_ops< T >::to_target(), and mpfr_float_ops::to_target().

◆ FLOATFORMAT_LARGEST_BYTES

#define FLOATFORMAT_LARGEST_BYTES   16

Definition at line 87 of file target-float.c.

Referenced by floatformat_classify(), floatformat_is_negative(), floatformat_mantissa(), host_float_ops< T >::from_target(), mpfr_float_ops::from_target(), host_float_ops< T >::to_target(), and mpfr_float_ops::to_target().

◆ MAX_DECIMAL_STRING

#define MAX_DECIMAL_STRING   43

Definition at line 1726 of file target-float.c.

Referenced by decimal_float_ops::to_string().

◆ MPFR_USE_INTMAX_T

#define MPFR_USE_INTMAX_T

Definition at line 1150 of file target-float.c.

◆ OPPOSITE_BYTE_ORDER

#define OPPOSITE_BYTE_ORDER   BFD_ENDIAN_BIG

Referenced by match_endianness().

Enumeration Type Documentation

◆ float_kind

enum float_kind
Enumerator
float_nan 
float_infinite 
float_zero 
float_normal 
float_subnormal 

Definition at line 72 of file target-float.c.

◆ target_float_ops_kind

enum target_float_ops_kind
Enumerator
host_float 
host_double 
host_long_double 
binary 
decimal 

Definition at line 2180 of file target-float.c.

Function Documentation

◆ decimal_check_errors()

static void decimal_check_errors ( decContext *  ctx)
static

Definition at line 1780 of file target-float.c.

References _, and error().

Referenced by decimal_float_ops::binop(), decimal_float_ops::compare(), and decimal_float_ops::from_string().

◆ decimal_from_number()

static void decimal_from_number ( const decNumber *  from,
gdb_byte *  to,
const struct type *  type 
)
static

Definition at line 1799 of file target-float.c.

References _, error(), match_endianness(), set_decnumber_context(), and TYPE_LENGTH.

Referenced by decimal_float_ops::binop(), decimal_float_ops::convert(), decimal_float_ops::from_longest(), and decimal_float_ops::from_ulongest().

◆ decimal_is_zero()

static bool decimal_is_zero ( const gdb_byte *  addr,
const struct type *  type 
)
static

Definition at line 1855 of file target-float.c.

References decimal_to_number().

Referenced by target_float_is_zero().

◆ decimal_to_number()

static void decimal_to_number ( const gdb_byte *  addr,
const struct type *  type,
decNumber *  to 
)
static

Definition at line 1830 of file target-float.c.

References _, error(), match_endianness(), and TYPE_LENGTH.

Referenced by decimal_float_ops::binop(), decimal_float_ops::compare(), decimal_float_ops::convert(), and decimal_is_zero().

◆ floatformat_classify()

static enum float_kind floatformat_classify ( const struct floatformat *  fmt,
const bfd_byte *  uval 
)
static

Definition at line 325 of file target-float.c.

References float_infinite, float_nan, float_normal, float_subnormal, float_zero, FLOATFORMAT_CHAR_BIT, FLOATFORMAT_LARGEST_BYTES, floatformat_normalize_byteorder(), gdb_assert, and get_field().

Referenced by host_float_ops< T >::from_target(), mpfr_float_ops::from_target(), target_float_is_zero(), target_float_to_string(), and mpfr_float_ops::to_string().

◆ floatformat_is_negative()

static int floatformat_is_negative ( const struct floatformat *  fmt,
const bfd_byte *  uval 
)
static

Definition at line 300 of file target-float.c.

References FLOATFORMAT_CHAR_BIT, FLOATFORMAT_LARGEST_BYTES, floatformat_normalize_byteorder(), gdb_assert, and get_field().

Referenced by mpfr_float_ops::from_target(), target_float_to_string(), and mpfr_float_ops::to_string().

◆ floatformat_mantissa()

static const char* floatformat_mantissa ( const struct floatformat *  fmt,
const bfd_byte *  val 
)
static

Definition at line 413 of file target-float.c.

References FLOATFORMAT_CHAR_BIT, FLOATFORMAT_LARGEST_BYTES, floatformat_normalize_byteorder(), gdb_assert, get_field(), and xsnprintf().

Referenced by target_float_to_string(), and mpfr_float_ops::to_string().

◆ floatformat_normalize_byteorder()

static enum floatformat_byteorders floatformat_normalize_byteorder ( const struct floatformat *  fmt,
const void *  from,
void *  to 
)
static

Definition at line 119 of file target-float.c.

References FLOATFORMAT_CHAR_BIT, and gdb_assert.

Referenced by floatformat_classify(), floatformat_is_negative(), floatformat_mantissa(), host_float_ops< T >::from_target(), mpfr_float_ops::from_target(), host_float_ops< T >::to_target(), and mpfr_float_ops::to_target().

◆ floatformat_precision()

static int floatformat_precision ( const struct floatformat *  fmt)
static

Definition at line 99 of file target-float.c.

Referenced by floatformat_printf_format(), and mpfr_float_ops::gdb_mpfr::gdb_mpfr().

◆ floatformat_printf_format()

static std::string floatformat_printf_format ( const struct floatformat *  fmt,
const char *  format,
char  length 
)
static

Definition at line 483 of file target-float.c.

References floatformat_precision(), gdb_assert, string, and string_printf().

Referenced by host_float_ops< T >::to_string(), and mpfr_float_ops::to_string().

◆ floatformat_totalsize_bytes()

static size_t floatformat_totalsize_bytes ( const struct floatformat *  fmt)
static

Definition at line 91 of file target-float.c.

References FLOATFORMAT_CHAR_BIT.

Referenced by host_float_ops< T >::from_target(), target_float_format_length(), host_float_ops< T >::to_target(), and mpfr_float_ops::to_target().

◆ get_field()

static unsigned long get_field ( const bfd_byte *  data,
enum floatformat_byteorders  order,
unsigned int  total_len,
unsigned int  start,
unsigned int  len 
)
static

Definition at line 169 of file target-float.c.

References FLOATFORMAT_CHAR_BIT, gdb_assert, and gdb.printer.bound_registers::long.

Referenced by floatformat_classify(), floatformat_is_negative(), floatformat_mantissa(), host_float_ops< T >::from_target(), and mpfr_float_ops::from_target().

◆ get_target_float_ops() [1/3]

static const target_float_ops* get_target_float_ops ( enum target_float_ops_kind  kind)
static

Definition at line 2228 of file target-float.c.

References binary, decimal, gdb_assert_not_reached, host_double, host_float, and host_long_double.

Referenced by get_target_float_ops(), target_float_binop(), target_float_compare(), target_float_convert(), target_float_from_host_double(), target_float_from_longest(), target_float_from_string(), target_float_from_ulongest(), target_float_to_host_double(), target_float_to_longest(), and target_float_to_string().

◆ get_target_float_ops() [2/3]

static const target_float_ops* get_target_float_ops ( const struct type *  type)
static

Definition at line 2282 of file target-float.c.

References get_target_float_ops(), and get_target_float_ops_kind().

◆ get_target_float_ops() [3/3]

static const target_float_ops* get_target_float_ops ( const struct type *  type1,
const struct type *  type2 
)
static

Definition at line 2290 of file target-float.c.

References gdb_assert, get_target_float_ops(), get_target_float_ops_kind(), and TYPE_CODE.

◆ get_target_float_ops_kind()

static enum target_float_ops_kind get_target_float_ops_kind ( const struct type *  type)
static

Definition at line 2195 of file target-float.c.

References binary, decimal, floatformat_from_type(), gdb_assert_not_reached, host_double, host_double_format, host_float, host_float_format, host_long_double, host_long_double_format, TYPE_CODE, TYPE_CODE_DECFLOAT, and TYPE_CODE_FLT.

Referenced by get_target_float_ops().

◆ match_endianness()

static void match_endianness ( const gdb_byte *  from,
const struct type *  type,
gdb_byte *  to 
)
static

Definition at line 1732 of file target-float.c.

References gdb_assert, gdbarch_byte_order(), get_type_arch(), OPPOSITE_BYTE_ORDER, TYPE_CODE, TYPE_CODE_DECFLOAT, and TYPE_LENGTH.

Referenced by decimal_from_number(), decimal_to_number(), decimal_float_ops::from_string(), and decimal_float_ops::to_string().

◆ put_field()

static void put_field ( unsigned char *  data,
enum floatformat_byteorders  order,
unsigned int  total_len,
unsigned int  start,
unsigned int  len,
unsigned long  stuff_to_put 
)
static

Definition at line 236 of file target-float.c.

References FLOATFORMAT_CHAR_BIT, and gdb_assert.

Referenced by host_float_ops< T >::to_target(), and mpfr_float_ops::to_target().

◆ set_decnumber_context()

static void set_decnumber_context ( decContext *  ctx,
const struct type *  type 
)
static

Definition at line 1758 of file target-float.c.

References gdb_assert, TYPE_CODE, TYPE_CODE_DECFLOAT, and TYPE_LENGTH.

Referenced by decimal_float_ops::binop(), decimal_float_ops::compare(), decimal_from_number(), and decimal_float_ops::from_string().

◆ target_float_binop()

void target_float_binop ( enum exp_opcode  opcode,
const gdb_byte *  x,
const struct type *  type_x,
const gdb_byte *  y,
const struct type *  type_y,
gdb_byte *  res,
const struct type *  type_res 
)

Definition at line 2464 of file target-float.c.

References target_float_ops::binop(), gdb_assert, get_target_float_ops(), and target_float_same_category_p().

Referenced by scalar_binop().

◆ target_float_compare()

int target_float_compare ( const gdb_byte *  x,
const struct type *  type_x,
const gdb_byte *  y,
const struct type *  type_y 
)

Definition at line 2484 of file target-float.c.

References target_float_ops::compare(), gdb_assert, get_target_float_ops(), and target_float_same_category_p().

Referenced by value_equal(), and value_less().

◆ target_float_convert()

void target_float_convert ( const gdb_byte *  from,
const struct type *  from_type,
gdb_byte *  to,
const struct type *  to_type 
)

Definition at line 2429 of file target-float.c.

References target_float_ops::convert(), get_target_float_ops(), memset(), string, target_float_format_length(), target_float_from_string(), target_float_same_category_p(), target_float_same_format_p(), target_float_to_string(), and TYPE_LENGTH.

Referenced by arm_extract_return_value(), arm_store_return_value(), do_ppc_sysv_return_value(), i386_extract_return_value(), i386_store_return_value(), i387_register_to_value(), i387_value_to_register(), ia64_extract_return_value(), ia64_push_dummy_call(), ia64_register_to_value(), ia64_store_return_value(), ia64_value_to_register(), m68k_register_to_value(), m68k_svr4_extract_return_value(), m68k_svr4_store_return_value(), m68k_value_to_register(), ppc64_sysv_abi_push_freg(), ppc64_sysv_abi_return_value_base(), ppc_sysv_abi_push_dummy_call(), rs6000_lynx178_push_dummy_call(), rs6000_lynx178_return_value(), rs6000_push_dummy_call(), rs6000_register_to_value(), rs6000_return_value(), rs6000_value_to_register(), sh64_extract_return_value(), sh64_register_convert_to_raw(), sh64_register_convert_to_virtual(), sh_register_convert_to_raw(), sh_register_convert_to_virtual(), and value_cast().

◆ target_float_format_length()

static int target_float_format_length ( const struct type *  type)
static

Definition at line 2163 of file target-float.c.

References floatformat_from_type(), floatformat_totalsize_bytes(), gdb_assert_not_reached, TYPE_CODE, TYPE_CODE_DECFLOAT, TYPE_CODE_FLT, and TYPE_LENGTH.

Referenced by target_float_convert().

◆ target_float_from_host_double()

void target_float_from_host_double ( gdb_byte *  addr,
const struct type *  type,
double  val 
)

Definition at line 2418 of file target-float.c.

References target_float_ops::from_host_double(), and get_target_float_ops().

Referenced by convert_value_from_python(), gdbscm_value_to_real(), vlscm_convert_number(), and vlscm_convert_typed_number().

◆ target_float_from_longest()

void target_float_from_longest ( gdb_byte *  addr,
const struct type *  type,
LONGEST  val 
)

Definition at line 2388 of file target-float.c.

References target_float_ops::from_longest(), and get_target_float_ops().

Referenced by pack_long(), and value_args_as_target_float().

◆ target_float_from_string()

bool target_float_from_string ( gdb_byte *  addr,
const struct type *  type,
const std::string &  string 
)

Definition at line 2369 of file target-float.c.

References target_float_ops::from_string(), and get_target_float_ops().

Referenced by define_symbol(), parse_float(), and target_float_convert().

◆ target_float_from_ulongest()

void target_float_from_ulongest ( gdb_byte *  addr,
const struct type *  type,
ULONGEST  val 
)

Definition at line 2398 of file target-float.c.

References target_float_ops::from_ulongest(), and get_target_float_ops().

Referenced by pack_unsigned_long(), and value_args_as_target_float().

◆ target_float_is_valid()

bool target_float_is_valid ( const gdb_byte *  addr,
const struct type *  type 
)

Definition at line 2305 of file target-float.c.

References floatformat_from_type(), gdb_assert_not_reached, TYPE_CODE, TYPE_CODE_DECFLOAT, and TYPE_CODE_FLT.

Referenced by is_floating_value().

◆ target_float_is_zero()

bool target_float_is_zero ( const gdb_byte *  addr,
const struct type *  type 
)

Definition at line 2319 of file target-float.c.

References decimal_is_zero(), float_zero, floatformat_classify(), floatformat_from_type(), gdb_assert_not_reached, TYPE_CODE, TYPE_CODE_DECFLOAT, and TYPE_CODE_FLT.

Referenced by valpy_nonzero(), and value_logical_not().

◆ target_float_same_category_p()

static bool target_float_same_category_p ( const struct type *  type1,
const struct type *  type2 
)
static

Definition at line 2131 of file target-float.c.

References TYPE_CODE.

Referenced by target_float_binop(), target_float_compare(), target_float_convert(), and target_float_same_format_p().

◆ target_float_same_format_p()

static bool target_float_same_format_p ( const struct type *  type1,
const struct type *  type2 
)
static

Definition at line 2139 of file target-float.c.

References floatformat_from_type(), gdb_assert_not_reached, gdbarch_byte_order(), get_type_arch(), target_float_same_category_p(), TYPE_CODE, TYPE_CODE_DECFLOAT, TYPE_CODE_FLT, and TYPE_LENGTH.

Referenced by target_float_convert().

◆ target_float_to_host_double()

double target_float_to_host_double ( const gdb_byte *  addr,
const struct type *  type 
)

Definition at line 2408 of file target-float.c.

References get_target_float_ops(), and target_float_ops::to_host_double().

Referenced by gdbscm_value_to_real(), and valpy_float().

◆ target_float_to_longest()

LONGEST target_float_to_longest ( const gdb_byte *  addr,
const struct type *  type 
)

Definition at line 2379 of file target-float.c.

References get_target_float_ops(), and target_float_ops::to_longest().

Referenced by unpack_long().

◆ target_float_to_string()

std::string target_float_to_string ( const gdb_byte *  addr,
const struct type *  type,
const char *  format 
)

Definition at line 2334 of file target-float.c.

References float_infinite, float_nan, floatformat_classify(), floatformat_from_type(), floatformat_is_negative(), floatformat_mantissa(), get_target_float_ops(), string_printf(), target_float_ops::to_string(), TYPE_CODE, and TYPE_CODE_FLT.

Referenced by ada_val_print_num(), mips_print_fp_register(), print_fixed_point_type(), print_floating(), print_i387_value(), printf_floating(), sh64_do_fp_register(), and target_float_convert().

Variable Documentation

◆ host_double_format

const struct floatformat* host_double_format = GDB_HOST_DOUBLE_FORMAT
static

Definition at line 592 of file target-float.c.

Referenced by host_float_ops< T >::from_target(), get_target_float_ops_kind(), and host_float_ops< T >::to_target().

◆ host_float_format

const struct floatformat* host_float_format = GDB_HOST_FLOAT_FORMAT
static

Definition at line 591 of file target-float.c.

Referenced by host_float_ops< T >::from_target(), get_target_float_ops_kind(), and host_float_ops< T >::to_target().

◆ host_long_double_format

const struct floatformat* host_long_double_format = GDB_HOST_LONG_DOUBLE_FORMAT
static

Definition at line 594 of file target-float.c.

Referenced by host_float_ops< T >::from_target(), get_target_float_ops_kind(), and host_float_ops< T >::to_target().

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