| /* 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" |
| #include "expression.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 expr::operation_up i386_stap_parse_special_token |
| (struct gdbarch *gdbarch, struct stap_parse_info *p); |
| |
| #endif /* i386-tdep.h */ |
