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a6b808b408
(i386_gdbarch_init): Don't call set_gdbarch_process_record here. * i386-tdep.c (i386_process_record): Declare. * i386-linux-tdep.c (i386_linux_init_abi): Call set_gdbarch_process_record.
837 lines
33 KiB
C
837 lines
33 KiB
C
/* Target-dependent code for GNU/Linux i386.
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Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "frame.h"
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#include "value.h"
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#include "regcache.h"
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#include "inferior.h"
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#include "osabi.h"
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#include "reggroups.h"
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#include "dwarf2-frame.h"
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#include "gdb_string.h"
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#include "i386-tdep.h"
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#include "i386-linux-tdep.h"
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#include "linux-tdep.h"
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#include "glibc-tdep.h"
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#include "solib-svr4.h"
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#include "symtab.h"
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#include "arch-utils.h"
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#include "regset.h"
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#include "record.h"
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#include "linux-record.h"
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#include <stdint.h>
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/* Supported register note sections. */
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static struct core_regset_section i386_linux_regset_sections[] =
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{
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{ ".reg", 144 },
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{ ".reg2", 108 },
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{ ".reg-xfp", 512 },
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{ NULL, 0 }
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};
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/* Return the name of register REG. */
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static const char *
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i386_linux_register_name (struct gdbarch *gdbarch, int reg)
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{
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/* Deal with the extra "orig_eax" pseudo register. */
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if (reg == I386_LINUX_ORIG_EAX_REGNUM)
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return "orig_eax";
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return i386_register_name (gdbarch, reg);
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}
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/* Return non-zero, when the register is in the corresponding register
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group. Put the LINUX_ORIG_EAX register in the system group. */
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static int
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i386_linux_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
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struct reggroup *group)
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{
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if (regnum == I386_LINUX_ORIG_EAX_REGNUM)
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return (group == system_reggroup
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|| group == save_reggroup
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|| group == restore_reggroup);
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return i386_register_reggroup_p (gdbarch, regnum, group);
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}
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/* Recognizing signal handler frames. */
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/* GNU/Linux has two flavors of signals. Normal signal handlers, and
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"realtime" (RT) signals. The RT signals can provide additional
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information to the signal handler if the SA_SIGINFO flag is set
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when establishing a signal handler using `sigaction'. It is not
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unlikely that future versions of GNU/Linux will support SA_SIGINFO
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for normal signals too. */
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/* When the i386 Linux kernel calls a signal handler and the
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SA_RESTORER flag isn't set, the return address points to a bit of
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code on the stack. This function returns whether the PC appears to
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be within this bit of code.
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The instruction sequence for normal signals is
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pop %eax
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mov $0x77, %eax
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int $0x80
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or 0x58 0xb8 0x77 0x00 0x00 0x00 0xcd 0x80.
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Checking for the code sequence should be somewhat reliable, because
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the effect is to call the system call sigreturn. This is unlikely
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to occur anywhere other than in a signal trampoline.
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It kind of sucks that we have to read memory from the process in
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order to identify a signal trampoline, but there doesn't seem to be
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any other way. Therefore we only do the memory reads if no
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function name could be identified, which should be the case since
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the code is on the stack.
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Detection of signal trampolines for handlers that set the
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SA_RESTORER flag is in general not possible. Unfortunately this is
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what the GNU C Library has been doing for quite some time now.
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However, as of version 2.1.2, the GNU C Library uses signal
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trampolines (named __restore and __restore_rt) that are identical
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to the ones used by the kernel. Therefore, these trampolines are
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supported too. */
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#define LINUX_SIGTRAMP_INSN0 0x58 /* pop %eax */
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#define LINUX_SIGTRAMP_OFFSET0 0
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#define LINUX_SIGTRAMP_INSN1 0xb8 /* mov $NNNN, %eax */
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#define LINUX_SIGTRAMP_OFFSET1 1
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#define LINUX_SIGTRAMP_INSN2 0xcd /* int */
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#define LINUX_SIGTRAMP_OFFSET2 6
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static const gdb_byte linux_sigtramp_code[] =
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{
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LINUX_SIGTRAMP_INSN0, /* pop %eax */
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LINUX_SIGTRAMP_INSN1, 0x77, 0x00, 0x00, 0x00, /* mov $0x77, %eax */
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LINUX_SIGTRAMP_INSN2, 0x80 /* int $0x80 */
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};
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#define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code)
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/* If THIS_FRAME is a sigtramp routine, return the address of the
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start of the routine. Otherwise, return 0. */
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static CORE_ADDR
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i386_linux_sigtramp_start (struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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gdb_byte buf[LINUX_SIGTRAMP_LEN];
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/* We only recognize a signal trampoline if PC is at the start of
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one of the three instructions. We optimize for finding the PC at
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the start, as will be the case when the trampoline is not the
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first frame on the stack. We assume that in the case where the
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PC is not at the start of the instruction sequence, there will be
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a few trailing readable bytes on the stack. */
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if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_SIGTRAMP_LEN))
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return 0;
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if (buf[0] != LINUX_SIGTRAMP_INSN0)
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{
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int adjust;
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switch (buf[0])
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{
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case LINUX_SIGTRAMP_INSN1:
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adjust = LINUX_SIGTRAMP_OFFSET1;
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break;
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case LINUX_SIGTRAMP_INSN2:
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adjust = LINUX_SIGTRAMP_OFFSET2;
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break;
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default:
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return 0;
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}
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pc -= adjust;
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if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_SIGTRAMP_LEN))
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return 0;
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}
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if (memcmp (buf, linux_sigtramp_code, LINUX_SIGTRAMP_LEN) != 0)
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return 0;
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return pc;
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}
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/* This function does the same for RT signals. Here the instruction
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sequence is
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mov $0xad, %eax
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int $0x80
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or 0xb8 0xad 0x00 0x00 0x00 0xcd 0x80.
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The effect is to call the system call rt_sigreturn. */
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#define LINUX_RT_SIGTRAMP_INSN0 0xb8 /* mov $NNNN, %eax */
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#define LINUX_RT_SIGTRAMP_OFFSET0 0
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#define LINUX_RT_SIGTRAMP_INSN1 0xcd /* int */
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#define LINUX_RT_SIGTRAMP_OFFSET1 5
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static const gdb_byte linux_rt_sigtramp_code[] =
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{
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LINUX_RT_SIGTRAMP_INSN0, 0xad, 0x00, 0x00, 0x00, /* mov $0xad, %eax */
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LINUX_RT_SIGTRAMP_INSN1, 0x80 /* int $0x80 */
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};
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#define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code)
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/* If THIS_FRAME is an RT sigtramp routine, return the address of the
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start of the routine. Otherwise, return 0. */
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static CORE_ADDR
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i386_linux_rt_sigtramp_start (struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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gdb_byte buf[LINUX_RT_SIGTRAMP_LEN];
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/* We only recognize a signal trampoline if PC is at the start of
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one of the two instructions. We optimize for finding the PC at
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the start, as will be the case when the trampoline is not the
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first frame on the stack. We assume that in the case where the
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PC is not at the start of the instruction sequence, there will be
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a few trailing readable bytes on the stack. */
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if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_RT_SIGTRAMP_LEN))
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return 0;
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if (buf[0] != LINUX_RT_SIGTRAMP_INSN0)
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{
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if (buf[0] != LINUX_RT_SIGTRAMP_INSN1)
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return 0;
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pc -= LINUX_RT_SIGTRAMP_OFFSET1;
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if (!safe_frame_unwind_memory (this_frame, pc, buf,
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LINUX_RT_SIGTRAMP_LEN))
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return 0;
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}
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if (memcmp (buf, linux_rt_sigtramp_code, LINUX_RT_SIGTRAMP_LEN) != 0)
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return 0;
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return pc;
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}
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/* Return whether THIS_FRAME corresponds to a GNU/Linux sigtramp
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routine. */
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static int
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i386_linux_sigtramp_p (struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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char *name;
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find_pc_partial_function (pc, &name, NULL, NULL);
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/* If we have NAME, we can optimize the search. The trampolines are
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named __restore and __restore_rt. However, they aren't dynamically
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exported from the shared C library, so the trampoline may appear to
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be part of the preceding function. This should always be sigaction,
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__sigaction, or __libc_sigaction (all aliases to the same function). */
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if (name == NULL || strstr (name, "sigaction") != NULL)
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return (i386_linux_sigtramp_start (this_frame) != 0
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|| i386_linux_rt_sigtramp_start (this_frame) != 0);
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return (strcmp ("__restore", name) == 0
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|| strcmp ("__restore_rt", name) == 0);
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}
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/* Return one if the PC of THIS_FRAME is in a signal trampoline which
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may have DWARF-2 CFI. */
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static int
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i386_linux_dwarf_signal_frame_p (struct gdbarch *gdbarch,
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struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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char *name;
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find_pc_partial_function (pc, &name, NULL, NULL);
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/* If a vsyscall DSO is in use, the signal trampolines may have these
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names. */
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if (name && (strcmp (name, "__kernel_sigreturn") == 0
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|| strcmp (name, "__kernel_rt_sigreturn") == 0))
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return 1;
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return 0;
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}
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/* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
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#define I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 20
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/* Assuming THIS_FRAME is a GNU/Linux sigtramp routine, return the
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address of the associated sigcontext structure. */
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static CORE_ADDR
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i386_linux_sigcontext_addr (struct frame_info *this_frame)
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{
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CORE_ADDR pc;
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CORE_ADDR sp;
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gdb_byte buf[4];
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get_frame_register (this_frame, I386_ESP_REGNUM, buf);
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sp = extract_unsigned_integer (buf, 4);
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pc = i386_linux_sigtramp_start (this_frame);
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if (pc)
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{
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/* The sigcontext structure lives on the stack, right after
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the signum argument. We determine the address of the
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sigcontext structure by looking at the frame's stack
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pointer. Keep in mind that the first instruction of the
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sigtramp code is "pop %eax". If the PC is after this
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instruction, adjust the returned value accordingly. */
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if (pc == get_frame_pc (this_frame))
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return sp + 4;
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return sp;
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}
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pc = i386_linux_rt_sigtramp_start (this_frame);
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if (pc)
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{
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CORE_ADDR ucontext_addr;
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/* The sigcontext structure is part of the user context. A
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pointer to the user context is passed as the third argument
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to the signal handler. */
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read_memory (sp + 8, buf, 4);
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ucontext_addr = extract_unsigned_integer (buf, 4);
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return ucontext_addr + I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
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}
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error (_("Couldn't recognize signal trampoline."));
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return 0;
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}
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/* Set the program counter for process PTID to PC. */
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static void
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i386_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
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{
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regcache_cooked_write_unsigned (regcache, I386_EIP_REGNUM, pc);
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/* We must be careful with modifying the program counter. If we
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just interrupted a system call, the kernel might try to restart
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it when we resume the inferior. On restarting the system call,
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the kernel will try backing up the program counter even though it
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no longer points at the system call. This typically results in a
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SIGSEGV or SIGILL. We can prevent this by writing `-1' in the
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"orig_eax" pseudo-register.
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Note that "orig_eax" is saved when setting up a dummy call frame.
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This means that it is properly restored when that frame is
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popped, and that the interrupted system call will be restarted
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when we resume the inferior on return from a function call from
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within GDB. In all other cases the system call will not be
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restarted. */
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regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
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}
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/* Parse the arguments of current system call instruction and record
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the values of the registers and memory that will be changed into
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"record_arch_list". This instruction is "int 0x80" (Linux
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Kernel2.4) or "sysenter" (Linux Kernel 2.6).
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Return -1 if something wrong. */
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static struct linux_record_tdep i386_linux_record_tdep;
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static int
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i386_linux_intx80_sysenter_record (struct regcache *regcache)
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{
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int ret;
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uint32_t tmpu32;
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regcache_raw_read (regcache, I386_EAX_REGNUM, (gdb_byte *)&tmpu32);
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ret = record_linux_system_call (tmpu32, regcache,
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&i386_linux_record_tdep);
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if (ret)
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return ret;
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/* Record the return value of the system call. */
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if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
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return -1;
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return 0;
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}
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/* The register sets used in GNU/Linux ELF core-dumps are identical to
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the register sets in `struct user' that are used for a.out
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core-dumps. These are also used by ptrace(2). The corresponding
|
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types are `elf_gregset_t' for the general-purpose registers (with
|
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`elf_greg_t' the type of a single GP register) and `elf_fpregset_t'
|
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for the floating-point registers.
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Those types used to be available under the names `gregset_t' and
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`fpregset_t' too, and GDB used those names in the past. But those
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names are now used for the register sets used in the `mcontext_t'
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type, which have a different size and layout. */
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/* Mapping between the general-purpose registers in `struct user'
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format and GDB's register cache layout. */
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/* From <sys/reg.h>. */
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static int i386_linux_gregset_reg_offset[] =
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{
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6 * 4, /* %eax */
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1 * 4, /* %ecx */
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2 * 4, /* %edx */
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0 * 4, /* %ebx */
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15 * 4, /* %esp */
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5 * 4, /* %ebp */
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3 * 4, /* %esi */
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4 * 4, /* %edi */
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12 * 4, /* %eip */
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14 * 4, /* %eflags */
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13 * 4, /* %cs */
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16 * 4, /* %ss */
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7 * 4, /* %ds */
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8 * 4, /* %es */
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9 * 4, /* %fs */
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10 * 4, /* %gs */
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1,
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11 * 4 /* "orig_eax" */
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};
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|
||
/* Mapping between the general-purpose registers in `struct
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sigcontext' format and GDB's register cache layout. */
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|
||
/* From <asm/sigcontext.h>. */
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static int i386_linux_sc_reg_offset[] =
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{
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11 * 4, /* %eax */
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10 * 4, /* %ecx */
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9 * 4, /* %edx */
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8 * 4, /* %ebx */
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7 * 4, /* %esp */
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6 * 4, /* %ebp */
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5 * 4, /* %esi */
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4 * 4, /* %edi */
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14 * 4, /* %eip */
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16 * 4, /* %eflags */
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15 * 4, /* %cs */
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18 * 4, /* %ss */
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3 * 4, /* %ds */
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2 * 4, /* %es */
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1 * 4, /* %fs */
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0 * 4 /* %gs */
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};
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/* These macros are the size of the type that will be used in a system
|
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call. The values of these macros were obtained from Linux Kernel
|
||
source. */
|
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#define I386_LINUX_RECORD_SIZE__old_kernel_stat 32
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#define I386_LINUX_RECORD_SIZE_tms 16
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#define I386_LINUX_RECORD_SIZE_loff_t 8
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#define I386_LINUX_RECORD_SIZE_flock 16
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#define I386_LINUX_RECORD_SIZE_oldold_utsname 45
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#define I386_LINUX_RECORD_SIZE_ustat 20
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#define I386_LINUX_RECORD_SIZE_old_sigaction 140
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#define I386_LINUX_RECORD_SIZE_old_sigset_t 128
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#define I386_LINUX_RECORD_SIZE_rlimit 8
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#define I386_LINUX_RECORD_SIZE_rusage 72
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#define I386_LINUX_RECORD_SIZE_timeval 8
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||
#define I386_LINUX_RECORD_SIZE_timezone 8
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||
#define I386_LINUX_RECORD_SIZE_old_gid_t 2
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||
#define I386_LINUX_RECORD_SIZE_old_uid_t 2
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||
#define I386_LINUX_RECORD_SIZE_fd_set 128
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||
#define I386_LINUX_RECORD_SIZE_dirent 268
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||
#define I386_LINUX_RECORD_SIZE_dirent64 276
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||
#define I386_LINUX_RECORD_SIZE_statfs 64
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||
#define I386_LINUX_RECORD_SIZE_statfs64 84
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||
#define I386_LINUX_RECORD_SIZE_sockaddr 16
|
||
#define I386_LINUX_RECORD_SIZE_int 4
|
||
#define I386_LINUX_RECORD_SIZE_long 4
|
||
#define I386_LINUX_RECORD_SIZE_ulong 4
|
||
#define I386_LINUX_RECORD_SIZE_msghdr 28
|
||
#define I386_LINUX_RECORD_SIZE_itimerval 16
|
||
#define I386_LINUX_RECORD_SIZE_stat 88
|
||
#define I386_LINUX_RECORD_SIZE_old_utsname 325
|
||
#define I386_LINUX_RECORD_SIZE_sysinfo 64
|
||
#define I386_LINUX_RECORD_SIZE_msqid_ds 88
|
||
#define I386_LINUX_RECORD_SIZE_shmid_ds 84
|
||
#define I386_LINUX_RECORD_SIZE_new_utsname 390
|
||
#define I386_LINUX_RECORD_SIZE_timex 128
|
||
#define I386_LINUX_RECORD_SIZE_mem_dqinfo 24
|
||
#define I386_LINUX_RECORD_SIZE_if_dqblk 68
|
||
#define I386_LINUX_RECORD_SIZE_fs_quota_stat 68
|
||
#define I386_LINUX_RECORD_SIZE_timespec 8
|
||
#define I386_LINUX_RECORD_SIZE_pollfd 8
|
||
#define I386_LINUX_RECORD_SIZE_NFS_FHSIZE 32
|
||
#define I386_LINUX_RECORD_SIZE_knfsd_fh 132
|
||
#define I386_LINUX_RECORD_SIZE_TASK_COMM_LEN 16
|
||
#define I386_LINUX_RECORD_SIZE_sigaction 140
|
||
#define I386_LINUX_RECORD_SIZE_sigset_t 8
|
||
#define I386_LINUX_RECORD_SIZE_siginfo_t 128
|
||
#define I386_LINUX_RECORD_SIZE_cap_user_data_t 12
|
||
#define I386_LINUX_RECORD_SIZE_stack_t 12
|
||
#define I386_LINUX_RECORD_SIZE_off_t I386_LINUX_RECORD_SIZE_long
|
||
#define I386_LINUX_RECORD_SIZE_stat64 96
|
||
#define I386_LINUX_RECORD_SIZE_gid_t 2
|
||
#define I386_LINUX_RECORD_SIZE_uid_t 2
|
||
#define I386_LINUX_RECORD_SIZE_PAGE_SIZE 4096
|
||
#define I386_LINUX_RECORD_SIZE_flock64 24
|
||
#define I386_LINUX_RECORD_SIZE_user_desc 16
|
||
#define I386_LINUX_RECORD_SIZE_io_event 32
|
||
#define I386_LINUX_RECORD_SIZE_iocb 64
|
||
#define I386_LINUX_RECORD_SIZE_epoll_event 12
|
||
#define I386_LINUX_RECORD_SIZE_itimerspec (I386_LINUX_RECORD_SIZE_timespec * 2)
|
||
#define I386_LINUX_RECORD_SIZE_mq_attr 32
|
||
#define I386_LINUX_RECORD_SIZE_siginfo 128
|
||
#define I386_LINUX_RECORD_SIZE_termios 36
|
||
#define I386_LINUX_RECORD_SIZE_termios2 44
|
||
#define I386_LINUX_RECORD_SIZE_pid_t 4
|
||
#define I386_LINUX_RECORD_SIZE_winsize 8
|
||
#define I386_LINUX_RECORD_SIZE_char 8
|
||
#define I386_LINUX_RECORD_SIZE_serial_struct 60
|
||
#define I386_LINUX_RECORD_SIZE_serial_icounter_struct 80
|
||
#define I386_LINUX_RECORD_SIZE_hayes_esp_config 12
|
||
|
||
/* These macros are the values of the second argument of system call
|
||
"sys_ioctl". The values of these macros were obtained from Linux
|
||
Kernel source. */
|
||
#define I386_LINUX_RECORD_IOCTL_TCGETS 0x5401
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETS 0x5402
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETSW 0x5403
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETSF 0x5404
|
||
#define I386_LINUX_RECORD_IOCTL_TCGETA 0x5405
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETA 0x5406
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETAW 0x5407
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETAF 0x5408
|
||
#define I386_LINUX_RECORD_IOCTL_TCSBRK 0x5409
|
||
#define I386_LINUX_RECORD_IOCTL_TCXONC 0x540A
|
||
#define I386_LINUX_RECORD_IOCTL_TCFLSH 0x540B
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCEXCL 0x540C
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCNXCL 0x540D
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSCTTY 0x540E
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGPGRP 0x540F
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSPGRP 0x5410
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCOUTQ 0x5411
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSTI 0x5412
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGWINSZ 0x5413
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSWINSZ 0x5414
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCMGET 0x5415
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCMBIS 0x5416
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCMBIC 0x5417
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCMSET 0x5418
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGSOFTCAR 0x5419
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSSOFTCAR 0x541A
|
||
#define I386_LINUX_RECORD_IOCTL_FIONREAD 0x541B
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCINQ I386_LINUX_RECORD_IOCTL_FIONREAD
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCLINUX 0x541C
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCCONS 0x541D
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGSERIAL 0x541E
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSSERIAL 0x541F
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCPKT 0x5420
|
||
#define I386_LINUX_RECORD_IOCTL_FIONBIO 0x5421
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCNOTTY 0x5422
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSETD 0x5423
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGETD 0x5424
|
||
#define I386_LINUX_RECORD_IOCTL_TCSBRKP 0x5425
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCTTYGSTRUCT 0x5426
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSBRK 0x5427
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCCBRK 0x5428
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGSID 0x5429
|
||
#define I386_LINUX_RECORD_IOCTL_TCGETS2 0x802c542a
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETS2 0x402c542b
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETSW2 0x402c542c
|
||
#define I386_LINUX_RECORD_IOCTL_TCSETSF2 0x402c542d
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGPTN 0x80045430
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSPTLCK 0x40045431
|
||
#define I386_LINUX_RECORD_IOCTL_FIONCLEX 0x5450
|
||
#define I386_LINUX_RECORD_IOCTL_FIOCLEX 0x5451
|
||
#define I386_LINUX_RECORD_IOCTL_FIOASYNC 0x5452
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERCONFIG 0x5453
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERGWILD 0x5454
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERSWILD 0x5455
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGLCKTRMIOS 0x5456
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSLCKTRMIOS 0x5457
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERGSTRUCT 0x5458
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERGETLSR 0x5459
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERGETMULTI 0x545A
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSERSETMULTI 0x545B
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCMIWAIT 0x545C
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGICOUNT 0x545D
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCGHAYESESP 0x545E
|
||
#define I386_LINUX_RECORD_IOCTL_TIOCSHAYESESP 0x545F
|
||
#define I386_LINUX_RECORD_IOCTL_FIOQSIZE 0x5460
|
||
|
||
static void
|
||
i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||
{
|
||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||
|
||
/* GNU/Linux uses ELF. */
|
||
i386_elf_init_abi (info, gdbarch);
|
||
|
||
/* Since we have the extra "orig_eax" register on GNU/Linux, we have
|
||
to adjust a few things. */
|
||
|
||
set_gdbarch_write_pc (gdbarch, i386_linux_write_pc);
|
||
set_gdbarch_num_regs (gdbarch, I386_LINUX_NUM_REGS);
|
||
set_gdbarch_register_name (gdbarch, i386_linux_register_name);
|
||
set_gdbarch_register_reggroup_p (gdbarch, i386_linux_register_reggroup_p);
|
||
|
||
tdep->gregset_reg_offset = i386_linux_gregset_reg_offset;
|
||
tdep->gregset_num_regs = ARRAY_SIZE (i386_linux_gregset_reg_offset);
|
||
tdep->sizeof_gregset = 17 * 4;
|
||
|
||
tdep->jb_pc_offset = 20; /* From <bits/setjmp.h>. */
|
||
|
||
tdep->sigtramp_p = i386_linux_sigtramp_p;
|
||
tdep->sigcontext_addr = i386_linux_sigcontext_addr;
|
||
tdep->sc_reg_offset = i386_linux_sc_reg_offset;
|
||
tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
|
||
|
||
set_gdbarch_process_record (gdbarch, i386_process_record);
|
||
|
||
/* Initialize the i386_linux_record_tdep. */
|
||
i386_linux_record_tdep.size__old_kernel_stat =
|
||
I386_LINUX_RECORD_SIZE__old_kernel_stat;
|
||
i386_linux_record_tdep.size_tms = I386_LINUX_RECORD_SIZE_tms;
|
||
i386_linux_record_tdep.size_loff_t = I386_LINUX_RECORD_SIZE_loff_t;
|
||
i386_linux_record_tdep.size_flock = I386_LINUX_RECORD_SIZE_flock;
|
||
i386_linux_record_tdep.size_oldold_utsname =
|
||
I386_LINUX_RECORD_SIZE_oldold_utsname;
|
||
i386_linux_record_tdep.size_ustat = I386_LINUX_RECORD_SIZE_ustat;
|
||
i386_linux_record_tdep.size_old_sigaction =
|
||
I386_LINUX_RECORD_SIZE_old_sigaction;
|
||
i386_linux_record_tdep.size_old_sigset_t =
|
||
I386_LINUX_RECORD_SIZE_old_sigset_t;
|
||
i386_linux_record_tdep.size_rlimit = I386_LINUX_RECORD_SIZE_rlimit;
|
||
i386_linux_record_tdep.size_rusage = I386_LINUX_RECORD_SIZE_rusage;
|
||
i386_linux_record_tdep.size_timeval = I386_LINUX_RECORD_SIZE_timeval;
|
||
i386_linux_record_tdep.size_timezone = I386_LINUX_RECORD_SIZE_timezone;
|
||
i386_linux_record_tdep.size_old_gid_t = I386_LINUX_RECORD_SIZE_old_gid_t;
|
||
i386_linux_record_tdep.size_old_uid_t = I386_LINUX_RECORD_SIZE_old_uid_t;
|
||
i386_linux_record_tdep.size_fd_set = I386_LINUX_RECORD_SIZE_fd_set;
|
||
i386_linux_record_tdep.size_dirent = I386_LINUX_RECORD_SIZE_dirent;
|
||
i386_linux_record_tdep.size_dirent64 = I386_LINUX_RECORD_SIZE_dirent64;
|
||
i386_linux_record_tdep.size_statfs = I386_LINUX_RECORD_SIZE_statfs;
|
||
i386_linux_record_tdep.size_statfs64 = I386_LINUX_RECORD_SIZE_statfs64;
|
||
i386_linux_record_tdep.size_sockaddr = I386_LINUX_RECORD_SIZE_sockaddr;
|
||
i386_linux_record_tdep.size_int = I386_LINUX_RECORD_SIZE_int;
|
||
i386_linux_record_tdep.size_long = I386_LINUX_RECORD_SIZE_long;
|
||
i386_linux_record_tdep.size_ulong = I386_LINUX_RECORD_SIZE_ulong;
|
||
i386_linux_record_tdep.size_msghdr = I386_LINUX_RECORD_SIZE_msghdr;
|
||
i386_linux_record_tdep.size_itimerval = I386_LINUX_RECORD_SIZE_itimerval;
|
||
i386_linux_record_tdep.size_stat = I386_LINUX_RECORD_SIZE_stat;
|
||
i386_linux_record_tdep.size_old_utsname =
|
||
I386_LINUX_RECORD_SIZE_old_utsname;
|
||
i386_linux_record_tdep.size_sysinfo = I386_LINUX_RECORD_SIZE_sysinfo;
|
||
i386_linux_record_tdep.size_msqid_ds = I386_LINUX_RECORD_SIZE_msqid_ds;
|
||
i386_linux_record_tdep.size_shmid_ds = I386_LINUX_RECORD_SIZE_shmid_ds;
|
||
i386_linux_record_tdep.size_new_utsname =
|
||
I386_LINUX_RECORD_SIZE_new_utsname;
|
||
i386_linux_record_tdep.size_timex = I386_LINUX_RECORD_SIZE_timex;
|
||
i386_linux_record_tdep.size_mem_dqinfo = I386_LINUX_RECORD_SIZE_mem_dqinfo;
|
||
i386_linux_record_tdep.size_if_dqblk = I386_LINUX_RECORD_SIZE_if_dqblk;
|
||
i386_linux_record_tdep.size_fs_quota_stat =
|
||
I386_LINUX_RECORD_SIZE_fs_quota_stat;
|
||
i386_linux_record_tdep.size_timespec = I386_LINUX_RECORD_SIZE_timespec;
|
||
i386_linux_record_tdep.size_pollfd = I386_LINUX_RECORD_SIZE_pollfd;
|
||
i386_linux_record_tdep.size_NFS_FHSIZE = I386_LINUX_RECORD_SIZE_NFS_FHSIZE;
|
||
i386_linux_record_tdep.size_knfsd_fh = I386_LINUX_RECORD_SIZE_knfsd_fh;
|
||
i386_linux_record_tdep.size_TASK_COMM_LEN =
|
||
I386_LINUX_RECORD_SIZE_TASK_COMM_LEN;
|
||
i386_linux_record_tdep.size_sigaction = I386_LINUX_RECORD_SIZE_sigaction;
|
||
i386_linux_record_tdep.size_sigset_t = I386_LINUX_RECORD_SIZE_sigset_t;
|
||
i386_linux_record_tdep.size_siginfo_t = I386_LINUX_RECORD_SIZE_siginfo_t;
|
||
i386_linux_record_tdep.size_cap_user_data_t =
|
||
I386_LINUX_RECORD_SIZE_cap_user_data_t;
|
||
i386_linux_record_tdep.size_stack_t = I386_LINUX_RECORD_SIZE_stack_t;
|
||
i386_linux_record_tdep.size_off_t = I386_LINUX_RECORD_SIZE_off_t;
|
||
i386_linux_record_tdep.size_stat64 = I386_LINUX_RECORD_SIZE_stat64;
|
||
i386_linux_record_tdep.size_gid_t = I386_LINUX_RECORD_SIZE_gid_t;
|
||
i386_linux_record_tdep.size_uid_t = I386_LINUX_RECORD_SIZE_uid_t;
|
||
i386_linux_record_tdep.size_PAGE_SIZE = I386_LINUX_RECORD_SIZE_PAGE_SIZE;
|
||
i386_linux_record_tdep.size_flock64 = I386_LINUX_RECORD_SIZE_flock64;
|
||
i386_linux_record_tdep.size_user_desc = I386_LINUX_RECORD_SIZE_user_desc;
|
||
i386_linux_record_tdep.size_io_event = I386_LINUX_RECORD_SIZE_io_event;
|
||
i386_linux_record_tdep.size_iocb = I386_LINUX_RECORD_SIZE_iocb;
|
||
i386_linux_record_tdep.size_epoll_event =
|
||
I386_LINUX_RECORD_SIZE_epoll_event;
|
||
i386_linux_record_tdep.size_itimerspec = I386_LINUX_RECORD_SIZE_itimerspec;
|
||
i386_linux_record_tdep.size_mq_attr = I386_LINUX_RECORD_SIZE_mq_attr;
|
||
i386_linux_record_tdep.size_siginfo = I386_LINUX_RECORD_SIZE_siginfo;
|
||
i386_linux_record_tdep.size_termios = I386_LINUX_RECORD_SIZE_termios;
|
||
i386_linux_record_tdep.size_termios2 = I386_LINUX_RECORD_SIZE_termios2;
|
||
i386_linux_record_tdep.size_pid_t = I386_LINUX_RECORD_SIZE_pid_t;
|
||
i386_linux_record_tdep.size_winsize = I386_LINUX_RECORD_SIZE_winsize;
|
||
i386_linux_record_tdep.size_char = I386_LINUX_RECORD_SIZE_char;
|
||
i386_linux_record_tdep.size_serial_struct =
|
||
I386_LINUX_RECORD_SIZE_serial_struct;
|
||
i386_linux_record_tdep.size_serial_icounter_struct =
|
||
I386_LINUX_RECORD_SIZE_serial_icounter_struct;
|
||
i386_linux_record_tdep.size_hayes_esp_config =
|
||
I386_LINUX_RECORD_SIZE_hayes_esp_config;
|
||
|
||
i386_linux_record_tdep.ioctl_TCGETS = I386_LINUX_RECORD_IOCTL_TCGETS;
|
||
i386_linux_record_tdep.ioctl_TCSETS = I386_LINUX_RECORD_IOCTL_TCSETS;
|
||
i386_linux_record_tdep.ioctl_TCSETSW = I386_LINUX_RECORD_IOCTL_TCSETSW;
|
||
i386_linux_record_tdep.ioctl_TCSETSF = I386_LINUX_RECORD_IOCTL_TCSETSF;
|
||
i386_linux_record_tdep.ioctl_TCGETA = I386_LINUX_RECORD_IOCTL_TCGETA;
|
||
i386_linux_record_tdep.ioctl_TCSETA = I386_LINUX_RECORD_IOCTL_TCSETA;
|
||
i386_linux_record_tdep.ioctl_TCSETAW = I386_LINUX_RECORD_IOCTL_TCSETAW;
|
||
i386_linux_record_tdep.ioctl_TCSETAF = I386_LINUX_RECORD_IOCTL_TCSETAF;
|
||
i386_linux_record_tdep.ioctl_TCSBRK = I386_LINUX_RECORD_IOCTL_TCSBRK;
|
||
i386_linux_record_tdep.ioctl_TCXONC = I386_LINUX_RECORD_IOCTL_TCXONC;
|
||
i386_linux_record_tdep.ioctl_TCFLSH = I386_LINUX_RECORD_IOCTL_TCFLSH;
|
||
i386_linux_record_tdep.ioctl_TIOCEXCL = I386_LINUX_RECORD_IOCTL_TIOCEXCL;
|
||
i386_linux_record_tdep.ioctl_TIOCNXCL = I386_LINUX_RECORD_IOCTL_TIOCNXCL;
|
||
i386_linux_record_tdep.ioctl_TIOCSCTTY = I386_LINUX_RECORD_IOCTL_TIOCSCTTY;
|
||
i386_linux_record_tdep.ioctl_TIOCGPGRP = I386_LINUX_RECORD_IOCTL_TIOCGPGRP;
|
||
i386_linux_record_tdep.ioctl_TIOCSPGRP = I386_LINUX_RECORD_IOCTL_TIOCSPGRP;
|
||
i386_linux_record_tdep.ioctl_TIOCOUTQ = I386_LINUX_RECORD_IOCTL_TIOCOUTQ;
|
||
i386_linux_record_tdep.ioctl_TIOCSTI = I386_LINUX_RECORD_IOCTL_TIOCSTI;
|
||
i386_linux_record_tdep.ioctl_TIOCGWINSZ =
|
||
I386_LINUX_RECORD_IOCTL_TIOCGWINSZ;
|
||
i386_linux_record_tdep.ioctl_TIOCSWINSZ =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSWINSZ;
|
||
i386_linux_record_tdep.ioctl_TIOCMGET = I386_LINUX_RECORD_IOCTL_TIOCMGET;
|
||
i386_linux_record_tdep.ioctl_TIOCMBIS = I386_LINUX_RECORD_IOCTL_TIOCMBIS;
|
||
i386_linux_record_tdep.ioctl_TIOCMBIC = I386_LINUX_RECORD_IOCTL_TIOCMBIC;
|
||
i386_linux_record_tdep.ioctl_TIOCMSET = I386_LINUX_RECORD_IOCTL_TIOCMSET;
|
||
i386_linux_record_tdep.ioctl_TIOCGSOFTCAR =
|
||
I386_LINUX_RECORD_IOCTL_TIOCGSOFTCAR;
|
||
i386_linux_record_tdep.ioctl_TIOCSSOFTCAR =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSSOFTCAR;
|
||
i386_linux_record_tdep.ioctl_FIONREAD = I386_LINUX_RECORD_IOCTL_FIONREAD;
|
||
i386_linux_record_tdep.ioctl_TIOCINQ = I386_LINUX_RECORD_IOCTL_TIOCINQ;
|
||
i386_linux_record_tdep.ioctl_TIOCLINUX = I386_LINUX_RECORD_IOCTL_TIOCLINUX;
|
||
i386_linux_record_tdep.ioctl_TIOCCONS = I386_LINUX_RECORD_IOCTL_TIOCCONS;
|
||
i386_linux_record_tdep.ioctl_TIOCGSERIAL =
|
||
I386_LINUX_RECORD_IOCTL_TIOCGSERIAL;
|
||
i386_linux_record_tdep.ioctl_TIOCSSERIAL =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSSERIAL;
|
||
i386_linux_record_tdep.ioctl_TIOCPKT = I386_LINUX_RECORD_IOCTL_TIOCPKT;
|
||
i386_linux_record_tdep.ioctl_FIONBIO = I386_LINUX_RECORD_IOCTL_FIONBIO;
|
||
i386_linux_record_tdep.ioctl_TIOCNOTTY = I386_LINUX_RECORD_IOCTL_TIOCNOTTY;
|
||
i386_linux_record_tdep.ioctl_TIOCSETD = I386_LINUX_RECORD_IOCTL_TIOCSETD;
|
||
i386_linux_record_tdep.ioctl_TIOCGETD = I386_LINUX_RECORD_IOCTL_TIOCGETD;
|
||
i386_linux_record_tdep.ioctl_TCSBRKP = I386_LINUX_RECORD_IOCTL_TCSBRKP;
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||
i386_linux_record_tdep.ioctl_TIOCTTYGSTRUCT =
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I386_LINUX_RECORD_IOCTL_TIOCTTYGSTRUCT;
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||
i386_linux_record_tdep.ioctl_TIOCSBRK = I386_LINUX_RECORD_IOCTL_TIOCSBRK;
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||
i386_linux_record_tdep.ioctl_TIOCCBRK = I386_LINUX_RECORD_IOCTL_TIOCCBRK;
|
||
i386_linux_record_tdep.ioctl_TIOCGSID = I386_LINUX_RECORD_IOCTL_TIOCGSID;
|
||
i386_linux_record_tdep.ioctl_TCGETS2 = I386_LINUX_RECORD_IOCTL_TCGETS2;
|
||
i386_linux_record_tdep.ioctl_TCSETS2 = I386_LINUX_RECORD_IOCTL_TCSETS2;
|
||
i386_linux_record_tdep.ioctl_TCSETSW2 = I386_LINUX_RECORD_IOCTL_TCSETSW2;
|
||
i386_linux_record_tdep.ioctl_TCSETSF2 = I386_LINUX_RECORD_IOCTL_TCSETSF2;
|
||
i386_linux_record_tdep.ioctl_TIOCGPTN = I386_LINUX_RECORD_IOCTL_TIOCGPTN;
|
||
i386_linux_record_tdep.ioctl_TIOCSPTLCK =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSPTLCK;
|
||
i386_linux_record_tdep.ioctl_FIONCLEX = I386_LINUX_RECORD_IOCTL_FIONCLEX;
|
||
i386_linux_record_tdep.ioctl_FIOCLEX = I386_LINUX_RECORD_IOCTL_FIOCLEX;
|
||
i386_linux_record_tdep.ioctl_FIOASYNC = I386_LINUX_RECORD_IOCTL_FIOASYNC;
|
||
i386_linux_record_tdep.ioctl_TIOCSERCONFIG =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERCONFIG;
|
||
i386_linux_record_tdep.ioctl_TIOCSERGWILD =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERGWILD;
|
||
i386_linux_record_tdep.ioctl_TIOCSERSWILD =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERSWILD;
|
||
i386_linux_record_tdep.ioctl_TIOCGLCKTRMIOS =
|
||
I386_LINUX_RECORD_IOCTL_TIOCGLCKTRMIOS;
|
||
i386_linux_record_tdep.ioctl_TIOCSLCKTRMIOS =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSLCKTRMIOS;
|
||
i386_linux_record_tdep.ioctl_TIOCSERGSTRUCT =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERGSTRUCT;
|
||
i386_linux_record_tdep.ioctl_TIOCSERGETLSR =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERGETLSR;
|
||
i386_linux_record_tdep.ioctl_TIOCSERGETMULTI =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERGETMULTI;
|
||
i386_linux_record_tdep.ioctl_TIOCSERSETMULTI =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSERSETMULTI;
|
||
i386_linux_record_tdep.ioctl_TIOCMIWAIT =
|
||
I386_LINUX_RECORD_IOCTL_TIOCMIWAIT;
|
||
i386_linux_record_tdep.ioctl_TIOCGICOUNT =
|
||
I386_LINUX_RECORD_IOCTL_TIOCGICOUNT;
|
||
i386_linux_record_tdep.ioctl_TIOCGHAYESESP =
|
||
I386_LINUX_RECORD_IOCTL_TIOCGHAYESESP;
|
||
i386_linux_record_tdep.ioctl_TIOCSHAYESESP =
|
||
I386_LINUX_RECORD_IOCTL_TIOCSHAYESESP;
|
||
i386_linux_record_tdep.ioctl_FIOQSIZE = I386_LINUX_RECORD_IOCTL_FIOQSIZE;
|
||
|
||
i386_linux_record_tdep.arg1 = I386_EBX_REGNUM;
|
||
i386_linux_record_tdep.arg2 = I386_ECX_REGNUM;
|
||
i386_linux_record_tdep.arg3 = I386_EDX_REGNUM;
|
||
i386_linux_record_tdep.arg4 = I386_ESI_REGNUM;
|
||
i386_linux_record_tdep.arg5 = I386_EDI_REGNUM;
|
||
|
||
tdep->i386_intx80_record = i386_linux_intx80_sysenter_record;
|
||
tdep->i386_sysenter_record = i386_linux_intx80_sysenter_record;
|
||
|
||
/* N_FUN symbols in shared libaries have 0 for their values and need
|
||
to be relocated. */
|
||
set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
|
||
|
||
/* GNU/Linux uses SVR4-style shared libraries. */
|
||
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
|
||
set_solib_svr4_fetch_link_map_offsets
|
||
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
||
|
||
/* GNU/Linux uses the dynamic linker included in the GNU C Library. */
|
||
set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
|
||
|
||
dwarf2_frame_set_signal_frame_p (gdbarch, i386_linux_dwarf_signal_frame_p);
|
||
|
||
/* Enable TLS support. */
|
||
set_gdbarch_fetch_tls_load_module_address (gdbarch,
|
||
svr4_fetch_objfile_link_map);
|
||
|
||
/* Install supported register note sections. */
|
||
set_gdbarch_core_regset_sections (gdbarch, i386_linux_regset_sections);
|
||
|
||
/* Displaced stepping. */
|
||
set_gdbarch_displaced_step_copy_insn (gdbarch,
|
||
simple_displaced_step_copy_insn);
|
||
set_gdbarch_displaced_step_fixup (gdbarch, i386_displaced_step_fixup);
|
||
set_gdbarch_displaced_step_free_closure (gdbarch,
|
||
simple_displaced_step_free_closure);
|
||
set_gdbarch_displaced_step_location (gdbarch,
|
||
displaced_step_at_entry_point);
|
||
|
||
set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
|
||
}
|
||
|
||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||
extern void _initialize_i386_linux_tdep (void);
|
||
|
||
void
|
||
_initialize_i386_linux_tdep (void)
|
||
{
|
||
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_LINUX,
|
||
i386_linux_init_abi);
|
||
}
|