mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
a9762ec78a
Switch the license of all .h files to GPLv3.
Switch the license of all .cc files to GPLv3.
219 lines
6.9 KiB
C
219 lines
6.9 KiB
C
/* Target-dependent code for the i386.
|
||
|
||
Copyright (C) 2001, 2002, 2003, 2004, 2006, 2007
|
||
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 (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 */
|