be0d295484
2010-04-22 H.J. Lu <hongjiu.lu@intel.com> * i386-linux-nat.c (regmap): Removed. (fetch_register): Replace regmap with i386_linux_gregset_reg_offset. (store_register): Likewise. (supply_gregset): Likewise. (fill_gregset): Likewise. * i386-linux-tdep.c (i386_linux_gregset_reg_offset): Make it global. * i386-linux-tdep.h (i386_linux_gregset_reg_offset): New.
71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/* Target-dependent code for GNU/Linux x86.
|
|
|
|
Copyright (C) 2002, 2003, 2007, 2008, 2009, 2010
|
|
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_LINUX_TDEP_H
|
|
#define I386_LINUX_TDEP_H
|
|
|
|
/* The Linux kernel pretends there is an additional "orig_eax"
|
|
register. Since GDB needs access to that register to be able to
|
|
properly restart system calls when necessary (see
|
|
i386-linux-tdep.c) we need our own versions of a number of
|
|
functions that deal with GDB's register cache. */
|
|
|
|
/* Register number for the "orig_eax" pseudo-register. If this
|
|
pseudo-register contains a value >= 0 it is interpreted as the
|
|
system call number that the kernel is supposed to restart. */
|
|
#define I386_LINUX_ORIG_EAX_REGNUM I386_AVX_NUM_REGS
|
|
|
|
/* Total number of registers for GNU/Linux. */
|
|
#define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1)
|
|
|
|
/* Get XSAVE extended state xcr0 from core dump. */
|
|
extern uint64_t i386_linux_core_read_xcr0
|
|
(struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
|
|
|
|
/* Linux target description. */
|
|
extern struct target_desc *tdesc_i386_linux;
|
|
extern struct target_desc *tdesc_i386_mmx_linux;
|
|
extern struct target_desc *tdesc_i386_avx_linux;
|
|
|
|
/* Format of XSAVE extended state is:
|
|
struct
|
|
{
|
|
fxsave_bytes[0..463]
|
|
sw_usable_bytes[464..511]
|
|
xstate_hdr_bytes[512..575]
|
|
avx_bytes[576..831]
|
|
future_state etc
|
|
};
|
|
|
|
Same memory layout will be used for the coredump NT_X86_XSTATE
|
|
representing the XSAVE extended state registers.
|
|
|
|
The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled
|
|
extended state mask, which is the same as the extended control register
|
|
0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask
|
|
together with the mask saved in the xstate_hdr_bytes to determine what
|
|
states the processor/OS supports and what state, used or initialized,
|
|
the process/thread is in. */
|
|
#define I386_LINUX_XSAVE_XCR0_OFFSET 464
|
|
|
|
extern int i386_linux_gregset_reg_offset[];
|
|
|
|
#endif /* i386-linux-tdep.h */
|