mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
3666a04883
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
492 lines
15 KiB
C
492 lines
15 KiB
C
/* Target-dependent code for the i386.
|
||
|
||
Copyright (C) 2001-2021 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 I386_TDEP_H
|
||
#define I386_TDEP_H
|
||
|
||
#include "gdbarch.h"
|
||
#include "infrun.h"
|
||
|
||
struct frame_info;
|
||
struct gdbarch;
|
||
struct reggroup;
|
||
struct regset;
|
||
struct regcache;
|
||
|
||
/* GDB's i386 target supports both the 32-bit Intel Architecture
|
||
(IA-32) and the 64-bit AMD x86-64 architecture. Internally it uses
|
||
a similar register layout for both.
|
||
|
||
- General purpose registers
|
||
- FPU data registers
|
||
- FPU control registers
|
||
- SSE data registers
|
||
- SSE control register
|
||
|
||
The general purpose registers for the x86-64 architecture are quite
|
||
different from IA-32. Therefore, gdbarch_fp0_regnum
|
||
determines the register number at which the FPU data registers
|
||
start. The number of FPU data and control registers is the same
|
||
for both architectures. The number of SSE registers however,
|
||
differs and is determined by the num_xmm_regs member of `struct
|
||
gdbarch_tdep'. */
|
||
|
||
/* Convention for returning structures. */
|
||
|
||
enum struct_return
|
||
{
|
||
pcc_struct_return, /* Return "short" structures in memory. */
|
||
reg_struct_return /* Return "short" structures in registers. */
|
||
};
|
||
|
||
/* i386 architecture specific information. */
|
||
struct gdbarch_tdep
|
||
{
|
||
/* General-purpose registers. */
|
||
int *gregset_reg_offset;
|
||
int gregset_num_regs;
|
||
size_t sizeof_gregset;
|
||
|
||
/* Floating-point registers. */
|
||
size_t sizeof_fpregset;
|
||
|
||
/* Register number for %st(0). The register numbers for the other
|
||
registers follow from this one. Set this to -1 to indicate the
|
||
absence of an FPU. */
|
||
int st0_regnum;
|
||
|
||
/* Number of MMX registers. */
|
||
int num_mmx_regs;
|
||
|
||
/* Register number for %mm0. Set this to -1 to indicate the absence
|
||
of MMX support. */
|
||
int mm0_regnum;
|
||
|
||
/* Number of pseudo YMM registers. */
|
||
int num_ymm_regs;
|
||
|
||
/* Register number for %ymm0. Set this to -1 to indicate the absence
|
||
of pseudo YMM register support. */
|
||
int ymm0_regnum;
|
||
|
||
/* Number of AVX512 OpMask registers (K-registers) */
|
||
int num_k_regs;
|
||
|
||
/* Register number for %k0. Set this to -1 to indicate the absence
|
||
of AVX512 OpMask register support. */
|
||
int k0_regnum;
|
||
|
||
/* Number of pseudo ZMM registers ($zmm0-$zmm31). */
|
||
int num_zmm_regs;
|
||
|
||
/* Register number for %zmm0. Set this to -1 to indicate the absence
|
||
of pseudo ZMM register support. */
|
||
int zmm0_regnum;
|
||
|
||
/* Number of byte registers. */
|
||
int num_byte_regs;
|
||
|
||
/* Register pseudo number for %al. */
|
||
int al_regnum;
|
||
|
||
/* Number of pseudo word registers. */
|
||
int num_word_regs;
|
||
|
||
/* Register number for %ax. */
|
||
int ax_regnum;
|
||
|
||
/* Number of pseudo dword registers. */
|
||
int num_dword_regs;
|
||
|
||
/* Register number for %eax. Set this to -1 to indicate the absence
|
||
of pseudo dword register support. */
|
||
int eax_regnum;
|
||
|
||
/* Number of core registers. */
|
||
int num_core_regs;
|
||
|
||
/* Number of SSE registers. */
|
||
int num_xmm_regs;
|
||
|
||
/* Number of SSE registers added in AVX512. */
|
||
int num_xmm_avx512_regs;
|
||
|
||
/* Register number of XMM16, the first XMM register added in AVX512. */
|
||
int xmm16_regnum;
|
||
|
||
/* Number of YMM registers added in AVX512. */
|
||
int num_ymm_avx512_regs;
|
||
|
||
/* Register number of YMM16, the first YMM register added in AVX512. */
|
||
int ymm16_regnum;
|
||
|
||
/* Bits of the extended control register 0 (the XFEATURE_ENABLED_MASK
|
||
register), excluding the x87 bit, which are supported by this GDB. */
|
||
|
||
uint64_t xcr0;
|
||
|
||
/* Offset of XCR0 in XSAVE extended state. */
|
||
int xsave_xcr0_offset;
|
||
|
||
/* Register names. */
|
||
const char * const *register_names;
|
||
|
||
/* Register number for %ymm0h. Set this to -1 to indicate the absence
|
||
of upper YMM register support. */
|
||
int ymm0h_regnum;
|
||
|
||
/* Upper YMM register names. Only used for tdesc_numbered_register. */
|
||
const char * const *ymmh_register_names;
|
||
|
||
/* Register number for %ymm16h. Set this to -1 to indicate the absence
|
||
of support for YMM16-31. */
|
||
int ymm16h_regnum;
|
||
|
||
/* YMM16-31 register names. Only used for tdesc_numbered_register. */
|
||
const char * const *ymm16h_register_names;
|
||
|
||
/* Register number for %bnd0r. Set this to -1 to indicate the absence
|
||
bound registers. */
|
||
int bnd0r_regnum;
|
||
|
||
/* Register number for pseudo register %bnd0. Set this to -1 to indicate the absence
|
||
bound registers. */
|
||
int bnd0_regnum;
|
||
|
||
/* Register number for %bndcfgu. Set this to -1 to indicate the absence
|
||
bound control registers. */
|
||
int bndcfgu_regnum;
|
||
|
||
/* MPX register names. Only used for tdesc_numbered_register. */
|
||
const char * const *mpx_register_names;
|
||
|
||
/* Register number for %zmm0h. Set this to -1 to indicate the absence
|
||
of ZMM_HI256 register support. */
|
||
int zmm0h_regnum;
|
||
|
||
/* OpMask register names. */
|
||
const char * const *k_register_names;
|
||
|
||
/* ZMM register names. Only used for tdesc_numbered_register. */
|
||
const char * const *zmmh_register_names;
|
||
|
||
/* XMM16-31 register names. Only used for tdesc_numbered_register. */
|
||
const char * const *xmm_avx512_register_names;
|
||
|
||
/* YMM16-31 register names. Only used for tdesc_numbered_register. */
|
||
const char * const *ymm_avx512_register_names;
|
||
|
||
/* Number of PKEYS registers. */
|
||
int num_pkeys_regs;
|
||
|
||
/* Register number for PKRU register. */
|
||
int pkru_regnum;
|
||
|
||
/* PKEYS register names. */
|
||
const char * const *pkeys_register_names;
|
||
|
||
/* Register number for %fsbase. Set this to -1 to indicate the
|
||
absence of segment base registers. */
|
||
int fsbase_regnum;
|
||
|
||
/* Target description. */
|
||
const struct target_desc *tdesc;
|
||
|
||
/* Register group function. */
|
||
gdbarch_register_reggroup_p_ftype *register_reggroup_p;
|
||
|
||
/* Offset of saved PC in jmp_buf. */
|
||
int jb_pc_offset;
|
||
|
||
/* Convention for returning structures. */
|
||
enum struct_return struct_return;
|
||
|
||
/* Address range where sigtramp lives. */
|
||
CORE_ADDR sigtramp_start;
|
||
CORE_ADDR sigtramp_end;
|
||
|
||
/* Detect sigtramp. */
|
||
int (*sigtramp_p) (struct frame_info *);
|
||
|
||
/* Get address of sigcontext for sigtramp. */
|
||
CORE_ADDR (*sigcontext_addr) (struct frame_info *);
|
||
|
||
/* Offset of registers in `struct sigcontext'. */
|
||
int *sc_reg_offset;
|
||
int sc_num_regs;
|
||
|
||
/* Offset of saved PC and SP in `struct sigcontext'. Usage of these
|
||
is deprecated, please use `sc_reg_offset' instead. */
|
||
int sc_pc_offset;
|
||
int sc_sp_offset;
|
||
|
||
/* ISA-specific data types. */
|
||
struct type *i386_mmx_type;
|
||
struct type *i386_ymm_type;
|
||
struct type *i386_zmm_type;
|
||
struct type *i387_ext_type;
|
||
struct type *i386_bnd_type;
|
||
|
||
/* Process record/replay target. */
|
||
/* The map for registers because the AMD64's registers order
|
||
in GDB is not same as I386 instructions. */
|
||
const int *record_regmap;
|
||
/* Parse intx80 args. */
|
||
int (*i386_intx80_record) (struct regcache *regcache);
|
||
/* Parse sysenter args. */
|
||
int (*i386_sysenter_record) (struct regcache *regcache);
|
||
/* Parse syscall args. */
|
||
int (*i386_syscall_record) (struct regcache *regcache);
|
||
|
||
/* Regsets. */
|
||
const struct regset *fpregset;
|
||
};
|
||
|
||
/* Floating-point registers. */
|
||
|
||
/* All FPU control registers (except for FIOFF and FOOFF) are 16-bit
|
||
(at most) in the FPU, but are zero-extended to 32 bits in GDB's
|
||
register cache. */
|
||
|
||
/* Return non-zero if REGNUM matches the FP register and the FP
|
||
register set is active. */
|
||
extern int i386_fp_regnum_p (struct gdbarch *, int);
|
||
extern int i386_fpc_regnum_p (struct gdbarch *, int);
|
||
|
||
/* Register numbers of various important registers. */
|
||
|
||
enum i386_regnum
|
||
{
|
||
I386_EAX_REGNUM, /* %eax */
|
||
I386_ECX_REGNUM, /* %ecx */
|
||
I386_EDX_REGNUM, /* %edx */
|
||
I386_EBX_REGNUM, /* %ebx */
|
||
I386_ESP_REGNUM, /* %esp */
|
||
I386_EBP_REGNUM, /* %ebp */
|
||
I386_ESI_REGNUM, /* %esi */
|
||
I386_EDI_REGNUM, /* %edi */
|
||
I386_EIP_REGNUM, /* %eip */
|
||
I386_EFLAGS_REGNUM, /* %eflags */
|
||
I386_CS_REGNUM, /* %cs */
|
||
I386_SS_REGNUM, /* %ss */
|
||
I386_DS_REGNUM, /* %ds */
|
||
I386_ES_REGNUM, /* %es */
|
||
I386_FS_REGNUM, /* %fs */
|
||
I386_GS_REGNUM, /* %gs */
|
||
I386_ST0_REGNUM, /* %st(0) */
|
||
I386_MXCSR_REGNUM = 40, /* %mxcsr */
|
||
I386_YMM0H_REGNUM, /* %ymm0h */
|
||
I386_YMM7H_REGNUM = I386_YMM0H_REGNUM + 7,
|
||
I386_BND0R_REGNUM,
|
||
I386_BND3R_REGNUM = I386_BND0R_REGNUM + 3,
|
||
I386_BNDCFGU_REGNUM,
|
||
I386_BNDSTATUS_REGNUM,
|
||
I386_K0_REGNUM, /* %k0 */
|
||
I386_K7_REGNUM = I386_K0_REGNUM + 7,
|
||
I386_ZMM0H_REGNUM, /* %zmm0h */
|
||
I386_ZMM7H_REGNUM = I386_ZMM0H_REGNUM + 7,
|
||
I386_PKRU_REGNUM,
|
||
I386_FSBASE_REGNUM,
|
||
I386_GSBASE_REGNUM
|
||
};
|
||
|
||
/* Register numbers of RECORD_REGMAP. */
|
||
|
||
enum record_i386_regnum
|
||
{
|
||
X86_RECORD_REAX_REGNUM,
|
||
X86_RECORD_RECX_REGNUM,
|
||
X86_RECORD_REDX_REGNUM,
|
||
X86_RECORD_REBX_REGNUM,
|
||
X86_RECORD_RESP_REGNUM,
|
||
X86_RECORD_REBP_REGNUM,
|
||
X86_RECORD_RESI_REGNUM,
|
||
X86_RECORD_REDI_REGNUM,
|
||
X86_RECORD_R8_REGNUM,
|
||
X86_RECORD_R9_REGNUM,
|
||
X86_RECORD_R10_REGNUM,
|
||
X86_RECORD_R11_REGNUM,
|
||
X86_RECORD_R12_REGNUM,
|
||
X86_RECORD_R13_REGNUM,
|
||
X86_RECORD_R14_REGNUM,
|
||
X86_RECORD_R15_REGNUM,
|
||
X86_RECORD_REIP_REGNUM,
|
||
X86_RECORD_EFLAGS_REGNUM,
|
||
X86_RECORD_CS_REGNUM,
|
||
X86_RECORD_SS_REGNUM,
|
||
X86_RECORD_DS_REGNUM,
|
||
X86_RECORD_ES_REGNUM,
|
||
X86_RECORD_FS_REGNUM,
|
||
X86_RECORD_GS_REGNUM,
|
||
};
|
||
|
||
#define I386_NUM_GREGS 16
|
||
#define I386_NUM_XREGS 9
|
||
|
||
#define I386_SSE_NUM_REGS (I386_MXCSR_REGNUM + 1)
|
||
#define I386_AVX_NUM_REGS (I386_YMM7H_REGNUM + 1)
|
||
#define I386_MPX_NUM_REGS (I386_BNDSTATUS_REGNUM + 1)
|
||
#define I386_AVX512_NUM_REGS (I386_ZMM7H_REGNUM + 1)
|
||
#define I386_PKEYS_NUM_REGS (I386_PKRU_REGNUM + 1)
|
||
#define I386_NUM_REGS (I386_GSBASE_REGNUM + 1)
|
||
|
||
/* Size of the largest register. */
|
||
#define I386_MAX_REGISTER_SIZE 64
|
||
|
||
/* Types for i386-specific registers. */
|
||
extern struct type *i387_ext_type (struct gdbarch *gdbarch);
|
||
|
||
/* Checks of different pseudo-registers. */
|
||
extern int i386_byte_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_word_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_dword_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_xmm_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_xmm_avx512_regnum_p (struct gdbarch * gdbarch, int regnum);
|
||
extern int i386_ymm_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_ymm_avx512_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_bnd_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_k_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_zmm_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern int i386_zmmh_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
extern bool i386_pkru_regnum_p (struct gdbarch *gdbarch, int regnum);
|
||
|
||
extern const char *i386_pseudo_register_name (struct gdbarch *gdbarch,
|
||
int regnum);
|
||
extern struct type *i386_pseudo_register_type (struct gdbarch *gdbarch,
|
||
int regnum);
|
||
|
||
extern void i386_pseudo_register_read_into_value (struct gdbarch *gdbarch,
|
||
readable_regcache *regcache,
|
||
int regnum,
|
||
struct value *result);
|
||
|
||
extern void i386_pseudo_register_write (struct gdbarch *gdbarch,
|
||
struct regcache *regcache,
|
||
int regnum, const gdb_byte *buf);
|
||
|
||
extern int i386_ax_pseudo_register_collect (struct gdbarch *gdbarch,
|
||
struct agent_expr *ax,
|
||
int regnum);
|
||
|
||
/* Segment selectors. */
|
||
#define I386_SEL_RPL 0x0003 /* Requester's Privilege Level mask. */
|
||
#define I386_SEL_UPL 0x0003 /* User Privilige Level. */
|
||
#define I386_SEL_KPL 0x0000 /* Kernel Privilige Level. */
|
||
|
||
/* The length of the longest i386 instruction (according to
|
||
include/asm-i386/kprobes.h in Linux 2.6. */
|
||
#define I386_MAX_INSN_LEN (16)
|
||
|
||
/* Functions exported from i386-tdep.c. */
|
||
extern CORE_ADDR i386_pe_skip_trampoline_code (struct frame_info *frame,
|
||
CORE_ADDR pc, char *name);
|
||
extern CORE_ADDR i386_skip_main_prologue (struct gdbarch *gdbarch,
|
||
CORE_ADDR pc);
|
||
|
||
/* The "push_dummy_call" gdbarch method, optionally with the thiscall
|
||
calling convention. */
|
||
extern CORE_ADDR i386_thiscall_push_dummy_call (struct gdbarch *gdbarch,
|
||
struct value *function,
|
||
struct regcache *regcache,
|
||
CORE_ADDR bp_addr,
|
||
int nargs, struct value **args,
|
||
CORE_ADDR sp,
|
||
function_call_return_method
|
||
return_method,
|
||
CORE_ADDR struct_addr,
|
||
bool thiscall);
|
||
|
||
/* Return whether the THIS_FRAME corresponds to a sigtramp routine. */
|
||
extern int i386_sigtramp_p (struct frame_info *this_frame);
|
||
|
||
/* Return non-zero if REGNUM is a member of the specified group. */
|
||
extern int i386_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
|
||
struct reggroup *group);
|
||
|
||
/* Supply register REGNUM from the general-purpose register set REGSET
|
||
to register cache REGCACHE. If REGNUM is -1, do this for all
|
||
registers in REGSET. */
|
||
extern void i386_supply_gregset (const struct regset *regset,
|
||
struct regcache *regcache, int regnum,
|
||
const void *gregs, size_t len);
|
||
|
||
/* General-purpose register set. */
|
||
extern const struct regset i386_gregset;
|
||
|
||
/* Floating-point register set. */
|
||
extern const struct regset i386_fpregset;
|
||
|
||
/* Default iterator over core file register note sections. */
|
||
extern void
|
||
i386_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
||
iterate_over_regset_sections_cb *cb,
|
||
void *cb_data,
|
||
const struct regcache *regcache);
|
||
|
||
typedef buf_displaced_step_copy_insn_closure
|
||
i386_displaced_step_copy_insn_closure;
|
||
|
||
extern displaced_step_copy_insn_closure_up i386_displaced_step_copy_insn
|
||
(struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to,
|
||
struct regcache *regs);
|
||
extern void i386_displaced_step_fixup
|
||
(struct gdbarch *gdbarch, displaced_step_copy_insn_closure *closure,
|
||
CORE_ADDR from, CORE_ADDR to, regcache *regs);
|
||
|
||
/* Initialize a basic ELF architecture variant. */
|
||
extern void i386_elf_init_abi (struct gdbarch_info, struct gdbarch *);
|
||
|
||
/* Initialize a SVR4 architecture variant. */
|
||
extern void i386_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
|
||
|
||
/* Convert SVR4 register number REG to the appropriate register number
|
||
used by GDB. */
|
||
extern int i386_svr4_reg_to_regnum (struct gdbarch *gdbarch, int reg);
|
||
|
||
extern int i386_process_record (struct gdbarch *gdbarch,
|
||
struct regcache *regcache, CORE_ADDR addr);
|
||
extern const struct target_desc *i386_target_description (uint64_t xcr0,
|
||
bool segments);
|
||
|
||
/* Return true iff the current target is MPX enabled. */
|
||
extern int i386_mpx_enabled (void);
|
||
|
||
|
||
/* Functions and variables exported from i386-bsd-tdep.c. */
|
||
|
||
extern void i386bsd_init_abi (struct gdbarch_info, struct gdbarch *);
|
||
extern CORE_ADDR i386fbsd_sigtramp_start_addr;
|
||
extern CORE_ADDR i386fbsd_sigtramp_end_addr;
|
||
extern CORE_ADDR i386obsd_sigtramp_start_addr;
|
||
extern CORE_ADDR i386obsd_sigtramp_end_addr;
|
||
extern int i386fbsd4_sc_reg_offset[];
|
||
extern int i386fbsd_sc_reg_offset[];
|
||
extern int i386obsd_sc_reg_offset[];
|
||
extern int i386bsd_sc_reg_offset[];
|
||
|
||
/* SystemTap related functions. */
|
||
|
||
extern int i386_stap_is_single_operand (struct gdbarch *gdbarch,
|
||
const char *s);
|
||
|
||
extern int i386_stap_parse_special_token (struct gdbarch *gdbarch,
|
||
struct stap_parse_info *p);
|
||
|
||
#endif /* i386-tdep.h */
|