| /* Target-dependent code for the i386. |
| |
| Copyright (C) 2001, 2002, 2003, 2004, 2006, 2007, 2008 |
| 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 |
| |
| 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. */ |
| struct regset *gregset; |
| int *gregset_reg_offset; |
| int gregset_num_regs; |
| size_t sizeof_gregset; |
| |
| /* Floating-point registers. */ |
| struct regset *fpregset; |
| 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; |
| |
| /* Register number for %mm0. Set this to -1 to indicate the absence |
| of MMX support. */ |
| int mm0_regnum; |
| |
| /* Number of SSE registers. */ |
| int num_xmm_regs; |
| |
| /* 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_sse_type; |
| }; |
| |
| /* Floating-point registers. */ |
| |
| /* All FPU control regusters (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 (int regnum); |
| extern int i386_fpc_regnum_p (int regnum); |
| |
| /* 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) */ |
| }; |
| |
| #define I386_NUM_GREGS 16 |
| #define I386_NUM_FREGS 16 |
| #define I386_NUM_XREGS 9 |
| |
| #define I386_SSE_NUM_REGS (I386_NUM_GREGS + I386_NUM_FREGS \ |
| + I386_NUM_XREGS) |
| |
| /* Size of the largest register. */ |
| #define I386_MAX_REGISTER_SIZE 16 |
| |
| /* Types for i386-specific registers. */ |
| extern struct type *i386_eflags_type; |
| extern struct type *i386_mxcsr_type; |
| |
| extern struct type *i386_mmx_type (struct gdbarch *gdbarch); |
| extern struct type *i386_sse_type (struct gdbarch *gdbarch); |
| |
| /* 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. */ |
| |
| /* Functions exported from i386-tdep.c. */ |
| extern CORE_ADDR i386_pe_skip_trampoline_code (CORE_ADDR pc, char *name); |
| |
| /* Return the name of register REGNUM. */ |
| extern char const *i386_register_name (struct gdbarch * gdbarch, int regnum); |
| |
| /* 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); |
| |
| /* Collect register REGNUM from the register cache REGCACHE and store |
| it in the buffer specified by GREGS and LEN as described by the |
| general-purpose register set REGSET. If REGNUM is -1, do this for |
| all registers in REGSET. */ |
| extern void i386_collect_gregset (const struct regset *regset, |
| const struct regcache *regcache, |
| int regnum, void *gregs, size_t len); |
| |
| /* Return the appropriate register set for the core section identified |
| by SECT_NAME and SECT_SIZE. */ |
| extern const struct regset * |
| i386_regset_from_core_section (struct gdbarch *gdbarch, |
| const char *sect_name, size_t sect_size); |
| |
| /* 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 *); |
| |
| |
| /* Functions and variables exported from i386bsd-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 i386nbsd_sc_reg_offset[]; |
| extern int i386obsd_sc_reg_offset[]; |
| extern int i386bsd_sc_reg_offset[]; |
| |
| #endif /* i386-tdep.h */ |