3cac699e88
$(i386_tdep_h), and nbsd-tdep.h to dependency list. * i386-tdep.h (i386bsd_init_abi): New prototype. * i386bsd-tdep.c (i386bsd_init_abi): Remove "static" from function declaration. (_initialize_i386bsd_tdep): Don't register OS ABI handlers for NetBSD-a.out or NetBSD-ELF. (i386nbsd_sigtramp_start, i386nbsd_sigtramp_end) (i386nbsd_sc_pc_offset, i386nbsd_sc_sp_offset) (i386nbsd_init_abi, i386nbsdelf_init_abi): Move to... * i386nbsd-tdep.c: ...here. Include arch-utils.h, i386-tdep.h, and nbsd-tdep.h. (i386nbsd_pc_in_sigtramp): New function. (i386nbsd_init_abi): Set gdbarch_pc_in_sigtramp to i386nbsd_pc_in_sigtramp. (_initialize_i386nbsd_tdep): Register i386nbsd_init_abi and i386nbsdelf_init_abi OS ABI handlers. * config/i386/nbsdaout.mt (TDEPFILES): Add nbsd-tdep.o. * config/i386/nbsdelf.mt (TDEPFILES): Likewise.
181 lines
5.5 KiB
C
181 lines
5.5 KiB
C
/* Target-dependent code for GDB, the GNU debugger.
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Copyright 2001, 2002
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef I386_TDEP_H
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#define I386_TDEP_H
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#include "osabi.h"
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/* GDB's i386 target supports both the 32-bit Intel Architecture
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(IA-32) and the 64-bit AMD x86-64 architecture. Internally it uses
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a similar register layout for both.
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- General purpose registers
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- FPU data registers
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- FPU control registers
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- SSE data registers
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- SSE control register
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The general purpose registers for the x86-64 architecture are quite
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different from IA-32. Therefore, the FP0_REGNUM target macro
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determines the register number at which the FPU data registers
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start. The number of FPU data and control registers is the same
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for both architectures. The number of SSE registers however,
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differs and is determined by the num_xmm_regs member of `struct
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gdbarch_tdep'. */
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/* Convention for returning structures. */
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enum struct_return
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{
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pcc_struct_return, /* Return "short" structures in memory. */
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reg_struct_return /* Return "short" structures in registers. */
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};
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/* i386 architecture specific information. */
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struct gdbarch_tdep
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{
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/* ABI. */
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enum gdb_osabi osabi;
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/* Number of SSE registers. */
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int num_xmm_regs;
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/* Offset of saved PC in jmp_buf. */
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int jb_pc_offset;
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/* Convention for returning structures. */
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enum struct_return struct_return;
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/* Address range where sigtramp lives. */
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CORE_ADDR sigtramp_start;
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CORE_ADDR sigtramp_end;
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/* Get address of sigcontext for sigtramp. */
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CORE_ADDR (*sigcontext_addr) (struct frame_info *);
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/* Offset of saved PC and SP in `struct sigcontext'. */
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int sc_pc_offset;
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int sc_sp_offset;
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};
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/* Floating-point registers. */
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#define FPU_REG_RAW_SIZE 10
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/* All FPU control regusters (except for FIOFF and FOOFF) are 16-bit
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(at most) in the FPU, but are zero-extended to 32 bits in GDB's
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register cache. */
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/* "Generic" floating point control register. */
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#define FPC_REGNUM (FP0_REGNUM + 8)
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/* FPU control word. */
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#define FCTRL_REGNUM FPC_REGNUM
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/* FPU status word. */
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#define FSTAT_REGNUM (FPC_REGNUM + 1)
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/* FPU register tag word. */
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#define FTAG_REGNUM (FPC_REGNUM + 2)
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/* FPU instruction's code segment selector, called "FPU Instruction
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Pointer Selector" in the IA-32 manuals. */
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#define FISEG_REGNUM (FPC_REGNUM + 3)
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/* FPU instruction's offset within segment. */
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#define FIOFF_REGNUM (FPC_REGNUM + 4)
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/* FPU operand's data segment. */
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#define FOSEG_REGNUM (FPC_REGNUM + 5)
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/* FPU operand's offset within segment */
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#define FOOFF_REGNUM (FPC_REGNUM + 6)
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/* FPU opcode, bottom eleven bits. */
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#define FOP_REGNUM (FPC_REGNUM + 7)
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/* Return non-zero if N corresponds to a FPU data registers. */
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#define FP_REGNUM_P(n) (FP0_REGNUM && FP0_REGNUM <= (n) && (n) < FPC_REGNUM)
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/* Return non-zero if N corresponds to a FPU control register. */
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#define FPC_REGNUM_P(n) (FPC_REGNUM <= (n) && (n) < XMM0_REGNUM)
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/* SSE registers. */
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/* First SSE data register. */
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#define XMM0_REGNUM (FPC_REGNUM + 8)
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/* SSE control/status register. */
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#define MXCSR_REGNUM \
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(XMM0_REGNUM + gdbarch_tdep (current_gdbarch)->num_xmm_regs)
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/* Return non-zero if N corresponds to a SSE data register. */
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#define SSE_REGNUM_P(n) (XMM0_REGNUM <= (n) && (n) < MXCSR_REGNUM)
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/* FIXME: kettenis/2001-11-24: Obsolete macro's. */
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#define FCS_REGNUM FISEG_REGNUM
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#define FCOFF_REGNUM FIOFF_REGNUM
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#define FDS_REGNUM FOSEG_REGNUM
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#define FDOFF_REGNUM FOOFF_REGNUM
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#define IS_FP_REGNUM(n) FP_REGNUM_P (n)
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#define IS_FPU_CTRL_REGNUM(n) FPC_REGNUM_P (n)
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#define IS_SSE_REGNUM(n) SSE_REGNUM_P (n)
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#define I386_NUM_GREGS 16
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#define I386_NUM_FREGS 16
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#define I386_NUM_XREGS 9
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#define I386_SSE_NUM_REGS (I386_NUM_GREGS + I386_NUM_FREGS \
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+ I386_NUM_XREGS)
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/* Sizes of individual register sets. These cover the entire register
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file, so summing up the sizes of those portions actually present
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yields REGISTER_BYTES. */
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#define I386_SIZEOF_GREGS (I386_NUM_GREGS * 4)
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#define I386_SIZEOF_FREGS (8 * 10 + 8 * 4)
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#define I386_SIZEOF_XREGS (8 * 16 + 4)
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#define I386_SSE_SIZEOF_REGS (I386_SIZEOF_GREGS + I386_SIZEOF_FREGS \
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+ I386_SIZEOF_XREGS)
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/* Size of the largest register. */
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#define I386_MAX_REGISTER_SIZE 16
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/* Functions exported from i386-tdep.c. */
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extern CORE_ADDR i386_pe_skip_trampoline_code (CORE_ADDR pc, char *name);
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/* Return the name of register REG. */
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extern char const *i386_register_name (int reg);
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/* Initialize a basic ELF architecture variant. */
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extern void i386_elf_init_abi (struct gdbarch_info, struct gdbarch *);
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/* Initialize a SVR4 architecture variant. */
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extern void i386_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
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/* Functions exported from i386bsd-tdep.c. */
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extern CORE_ADDR i386bsd_sigcontext_addr (struct frame_info *frame);
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extern void i386bsd_init_abi (struct gdbarch_info, struct gdbarch *);
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#endif /* i386-tdep.h */
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