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/* Target-dependent code for the i387.
Copyright (C) 2000-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef I387_TDEP_H
#define I387_TDEP_H
struct gdbarch;
class frame_info_ptr;
struct regcache;
struct type;
struct ui_file;
struct x86_xsave_layout;
/* Number of i387 floating point registers. */
#define I387_NUM_REGS 16
#define I387_ST0_REGNUM(tdep) ((tdep)->st0_regnum)
#define I387_NUM_XMM_REGS(tdep) ((tdep)->num_xmm_regs)
#define I387_NUM_XMM_AVX512_REGS(tdep) ((tdep)->num_xmm_avx512_regs)
#define I387_MM0_REGNUM(tdep) ((tdep)->mm0_regnum)
#define I387_NUM_YMM_REGS(tdep) ((tdep)->num_ymm_regs)
#define I387_YMM0H_REGNUM(tdep) ((tdep)->ymm0h_regnum)
#define I387_BND0R_REGNUM(tdep) ((tdep)->bnd0r_regnum)
#define I387_BNDCFGU_REGNUM(tdep) ((tdep)->bndcfgu_regnum)
/* Set of constants used for 32 and 64-bit. */
#define I387_NUM_MPX_REGS 6
#define I387_NUM_BND_REGS 4
#define I387_NUM_MPX_CTRL_REGS 2
#define I387_NUM_K_REGS 8
#define I387_NUM_PKEYS_REGS 1
#define I387_PKRU_REGNUM(tdep) ((tdep)->pkru_regnum)
#define I387_K0_REGNUM(tdep) ((tdep)->k0_regnum)
#define I387_NUM_ZMMH_REGS(tdep) ((tdep)->num_zmm_regs)
#define I387_ZMM0H_REGNUM(tdep) ((tdep)->zmm0h_regnum)
#define I387_ZMM16H_REGNUM(tdep) ((tdep)->zmm0h_regnum + 16)
#define I387_NUM_YMM_AVX512_REGS(tdep) ((tdep)->num_ymm_avx512_regs)
#define I387_YMM16H_REGNUM(tdep) ((tdep)->ymm16h_regnum)
#define I387_FCTRL_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 8)
#define I387_FSTAT_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 1)
#define I387_FTAG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 2)
#define I387_FISEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 3)
#define I387_FIOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 4)
#define I387_FOSEG_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 5)
#define I387_FOOFF_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 6)
#define I387_FOP_REGNUM(tdep) (I387_FCTRL_REGNUM (tdep) + 7)
#define I387_XMM0_REGNUM(tdep) (I387_ST0_REGNUM (tdep) + 16)
#define I387_XMM16_REGNUM(tdep) ((tdep)->xmm16_regnum)
#define I387_MXCSR_REGNUM(tdep) \
(I387_XMM0_REGNUM (tdep) + I387_NUM_XMM_REGS (tdep))
#define I387_YMM0_REGNUM(tdep) (I387_MXCSR_REGNUM(tdep) + 1)
#define I387_YMMENDH_REGNUM(tdep) \
(I387_YMM0H_REGNUM (tdep) + I387_NUM_YMM_REGS (tdep))
#define I387_MPXEND_REGNUM(tdep) \
(I387_BND0R_REGNUM (tdep) + I387_NUM_MPX_REGS)
#define I387_KEND_REGNUM(tdep) \
(I387_K0_REGNUM (tdep) + I387_NUM_K_REGS)
#define I387_ZMMENDH_REGNUM(tdep) \
(I387_ZMM0H_REGNUM (tdep) + I387_NUM_ZMMH_REGS (tdep))
#define I387_YMMH_AVX512_END_REGNUM(tdep) \
(I387_YMM16H_REGNUM (tdep) + I387_NUM_YMM_AVX512_REGS (tdep))
#define I387_XMM_AVX512_END_REGNUM(tdep) \
(I387_XMM16_REGNUM (tdep) + I387_NUM_XMM_AVX512_REGS (tdep))
#define I387_PKEYSEND_REGNUM(tdep) \
(I387_PKRU_REGNUM (tdep) + I387_NUM_PKEYS_REGS)
/* Print out the i387 floating point state. */
extern void i387_print_float_info (struct gdbarch *gdbarch,
struct ui_file *file,
frame_info_ptr frame,
const char *args);
/* Return nonzero if a value of type TYPE stored in register REGNUM
needs any special handling. */
extern int i387_convert_register_p (struct gdbarch *gdbarch, int regnum,
struct type *type);
/* Read a value of type TYPE from register REGNUM in frame FRAME, and
return its contents in TO. */
extern int i387_register_to_value (frame_info_ptr frame, int regnum,
struct type *type, gdb_byte *to,
int *optimizedp, int *unavailablep);
/* Write the contents FROM of a value of type TYPE into register
REGNUM in frame FRAME. */
extern void i387_value_to_register (frame_info_ptr frame, int regnum,
struct type *type, const gdb_byte *from);
/* Size of the memory area use by the 'fsave' and 'fxsave'
instructions. */
#define I387_SIZEOF_FSAVE 108
#define I387_SIZEOF_FXSAVE 512
/* Fill register REGNUM in REGCACHE with the appropriate value from
*FSAVE. This function masks off any of the reserved bits in
*FSAVE. */
extern void i387_supply_fsave (struct regcache *regcache, int regnum,
const void *fsave);
/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
with the value from REGCACHE. If REGNUM is -1, do this for all
registers. This function doesn't touch any of the reserved bits in
*FSAVE. */
extern void i387_collect_fsave (const struct regcache *regcache, int regnum,
void *fsave);
/* Fill register REGNUM in REGCACHE with the appropriate
floating-point or SSE register value from *FXSAVE. This function
masks off any of the reserved bits in *FXSAVE. */
extern void i387_supply_fxsave (struct regcache *regcache, int regnum,
const void *fxsave);
/* Select an XSAVE layout based on the XCR0 bitmask and total XSAVE
extended state size. Returns true if the bitmask and size matched
a known layout. */
extern bool i387_guess_xsave_layout (uint64_t xcr0, size_t xsave_size,
x86_xsave_layout &layout);
/* Similar to i387_supply_fxsave, but use XSAVE extended state. */
extern void i387_supply_xsave (struct regcache *regcache, int regnum,
const void *xsave);
/* Fill register REGNUM (if it is a floating-point or SSE register) in
*FXSAVE with the value from REGCACHE. If REGNUM is -1, do this for
all registers. This function doesn't touch any of the reserved
bits in *FXSAVE. */
extern void i387_collect_fxsave (const struct regcache *regcache, int regnum,
void *fxsave);
/* Similar to i387_collect_fxsave, but use XSAVE extended state. */
extern void i387_collect_xsave (const struct regcache *regcache,
int regnum, void *xsave, int gcore);
/* Extract a bitset from XSAVE indicating which features are available in
the inferior, but not yet initialised. */
extern ULONGEST i387_xsave_get_clear_bv (struct gdbarch *gdbarch,
const void *xsave);
/* Prepare the FPU stack in REGCACHE for a function return. */
extern void i387_return_value (struct gdbarch *gdbarch,
struct regcache *regcache);
/* Set all bnd registers to the INIT state. INIT state means
all memory range can be accessed. */
extern void i387_reset_bnd_regs (struct gdbarch *gdbarch,
struct regcache *regcache);
#endif /* i387-tdep.h */
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