/* Target-dependent code for GNU/Linux i386.
- Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GDB.
#include "i386-tdep.h"
#include "i386-linux-tdep.h"
+#include "linux-tdep.h"
#include "glibc-tdep.h"
#include "solib-svr4.h"
#include "symtab.h"
+#include "arch-utils.h"
+#include "regset.h"
+
+#include "record.h"
+#include "linux-record.h"
+#include <stdint.h>
+
+/* Supported register note sections. */
+static struct core_regset_section i386_linux_regset_sections[] =
+{
+ { ".reg", 144 },
+ { ".reg2", 108 },
+ { ".reg-xfp", 512 },
+ { NULL, 0 }
+};
/* Return the name of register REG. */
#define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code)
-/* If NEXT_FRAME unwinds into a sigtramp routine, return the address
- of the start of the routine. Otherwise, return 0. */
+/* If THIS_FRAME is a sigtramp routine, return the address of the
+ start of the routine. Otherwise, return 0. */
static CORE_ADDR
-i386_linux_sigtramp_start (struct frame_info *next_frame)
+i386_linux_sigtramp_start (struct frame_info *this_frame)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
gdb_byte buf[LINUX_SIGTRAMP_LEN];
/* We only recognize a signal trampoline if PC is at the start of
PC is not at the start of the instruction sequence, there will be
a few trailing readable bytes on the stack. */
- if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_SIGTRAMP_LEN))
+ if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_SIGTRAMP_LEN))
return 0;
if (buf[0] != LINUX_SIGTRAMP_INSN0)
pc -= adjust;
- if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_SIGTRAMP_LEN))
+ if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_SIGTRAMP_LEN))
return 0;
}
#define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code)
-/* If NEXT_FRAME unwinds into an RT sigtramp routine, return the
- address of the start of the routine. Otherwise, return 0. */
+/* If THIS_FRAME is an RT sigtramp routine, return the address of the
+ start of the routine. Otherwise, return 0. */
static CORE_ADDR
-i386_linux_rt_sigtramp_start (struct frame_info *next_frame)
+i386_linux_rt_sigtramp_start (struct frame_info *this_frame)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
gdb_byte buf[LINUX_RT_SIGTRAMP_LEN];
/* We only recognize a signal trampoline if PC is at the start of
PC is not at the start of the instruction sequence, there will be
a few trailing readable bytes on the stack. */
- if (!safe_frame_unwind_memory (next_frame, pc, buf, LINUX_RT_SIGTRAMP_LEN))
+ if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_RT_SIGTRAMP_LEN))
return 0;
if (buf[0] != LINUX_RT_SIGTRAMP_INSN0)
pc -= LINUX_RT_SIGTRAMP_OFFSET1;
- if (!safe_frame_unwind_memory (next_frame, pc, buf,
+ if (!safe_frame_unwind_memory (this_frame, pc, buf,
LINUX_RT_SIGTRAMP_LEN))
return 0;
}
return pc;
}
-/* Return whether the frame preceding NEXT_FRAME corresponds to a
- GNU/Linux sigtramp routine. */
+/* Return whether THIS_FRAME corresponds to a GNU/Linux sigtramp
+ routine. */
static int
-i386_linux_sigtramp_p (struct frame_info *next_frame)
+i386_linux_sigtramp_p (struct frame_info *this_frame)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
be part of the preceding function. This should always be sigaction,
__sigaction, or __libc_sigaction (all aliases to the same function). */
if (name == NULL || strstr (name, "sigaction") != NULL)
- return (i386_linux_sigtramp_start (next_frame) != 0
- || i386_linux_rt_sigtramp_start (next_frame) != 0);
+ return (i386_linux_sigtramp_start (this_frame) != 0
+ || i386_linux_rt_sigtramp_start (this_frame) != 0);
return (strcmp ("__restore", name) == 0
|| strcmp ("__restore_rt", name) == 0);
}
-/* Return one if the unwound PC from NEXT_FRAME is in a signal trampoline
- which may have DWARF-2 CFI. */
+/* Return one if the PC of THIS_FRAME is in a signal trampoline which
+ may have DWARF-2 CFI. */
static int
i386_linux_dwarf_signal_frame_p (struct gdbarch *gdbarch,
- struct frame_info *next_frame)
+ struct frame_info *this_frame)
{
- CORE_ADDR pc = frame_pc_unwind (next_frame);
+ CORE_ADDR pc = get_frame_pc (this_frame);
char *name;
find_pc_partial_function (pc, &name, NULL, NULL);
/* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */
#define I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 20
-/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp
- routine, return the address of the associated sigcontext structure. */
+/* Assuming THIS_FRAME is a GNU/Linux sigtramp routine, return the
+ address of the associated sigcontext structure. */
static CORE_ADDR
-i386_linux_sigcontext_addr (struct frame_info *next_frame)
+i386_linux_sigcontext_addr (struct frame_info *this_frame)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR pc;
CORE_ADDR sp;
gdb_byte buf[4];
- frame_unwind_register (next_frame, I386_ESP_REGNUM, buf);
- sp = extract_unsigned_integer (buf, 4);
+ get_frame_register (this_frame, I386_ESP_REGNUM, buf);
+ sp = extract_unsigned_integer (buf, 4, byte_order);
- pc = i386_linux_sigtramp_start (next_frame);
+ pc = i386_linux_sigtramp_start (this_frame);
if (pc)
{
/* The sigcontext structure lives on the stack, right after
pointer. Keep in mind that the first instruction of the
sigtramp code is "pop %eax". If the PC is after this
instruction, adjust the returned value accordingly. */
- if (pc == frame_pc_unwind (next_frame))
+ if (pc == get_frame_pc (this_frame))
return sp + 4;
return sp;
}
- pc = i386_linux_rt_sigtramp_start (next_frame);
+ pc = i386_linux_rt_sigtramp_start (this_frame);
if (pc)
{
CORE_ADDR ucontext_addr;
pointer to the user context is passed as the third argument
to the signal handler. */
read_memory (sp + 8, buf, 4);
- ucontext_addr = extract_unsigned_integer (buf, 4);
+ ucontext_addr = extract_unsigned_integer (buf, 4, byte_order);
return ucontext_addr + I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
}
restarted. */
regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
}
+
+/* Parse the arguments of current system call instruction and record
+ the values of the registers and memory that will be changed into
+ "record_arch_list". This instruction is "int 0x80" (Linux
+ Kernel2.4) or "sysenter" (Linux Kernel 2.6).
+
+ Return -1 if something wrong. */
+
+static struct linux_record_tdep i386_linux_record_tdep;
+
+static int
+i386_linux_intx80_sysenter_record (struct regcache *regcache)
+{
+ int ret;
+ uint32_t tmpu32;
+
+ regcache_raw_read (regcache, I386_EAX_REGNUM, (gdb_byte *) &tmpu32);
+
+ if (tmpu32 > 499)
+ {
+ printf_unfiltered (_("Process record and replay target doesn't "
+ "support syscall number %u\n"), tmpu32);
+ return -1;
+ }
+
+ ret = record_linux_system_call (tmpu32, regcache,
+ &i386_linux_record_tdep);
+ if (ret)
+ return ret;
+
+ /* Record the return value of the system call. */
+ if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
+ return -1;
+
+ return 0;
+}
\f
/* The register sets used in GNU/Linux ELF core-dumps are identical to
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. */
+ /* These values are the size of the type that will be used in a system
+ call. They are obtained from Linux Kernel source. */
+ i386_linux_record_tdep.size_pointer
+ = gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT;
+ i386_linux_record_tdep.size__old_kernel_stat = 32;
+ i386_linux_record_tdep.size_tms = 16;
+ i386_linux_record_tdep.size_loff_t = 8;
+ i386_linux_record_tdep.size_flock = 16;
+ i386_linux_record_tdep.size_oldold_utsname = 45;
+ i386_linux_record_tdep.size_ustat = 20;
+ i386_linux_record_tdep.size_old_sigaction = 140;
+ i386_linux_record_tdep.size_old_sigset_t = 128;
+ i386_linux_record_tdep.size_rlimit = 8;
+ i386_linux_record_tdep.size_rusage = 72;
+ i386_linux_record_tdep.size_timeval = 8;
+ i386_linux_record_tdep.size_timezone = 8;
+ i386_linux_record_tdep.size_old_gid_t = 2;
+ i386_linux_record_tdep.size_old_uid_t = 2;
+ i386_linux_record_tdep.size_fd_set = 128;
+ i386_linux_record_tdep.size_dirent = 268;
+ i386_linux_record_tdep.size_dirent64 = 276;
+ i386_linux_record_tdep.size_statfs = 64;
+ i386_linux_record_tdep.size_statfs64 = 84;
+ i386_linux_record_tdep.size_sockaddr = 16;
+ i386_linux_record_tdep.size_int
+ = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT;
+ i386_linux_record_tdep.size_long
+ = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT;
+ i386_linux_record_tdep.size_ulong
+ = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT;
+ i386_linux_record_tdep.size_msghdr = 28;
+ i386_linux_record_tdep.size_itimerval = 16;
+ i386_linux_record_tdep.size_stat = 88;
+ i386_linux_record_tdep.size_old_utsname = 325;
+ i386_linux_record_tdep.size_sysinfo = 64;
+ i386_linux_record_tdep.size_msqid_ds = 88;
+ i386_linux_record_tdep.size_shmid_ds = 84;
+ i386_linux_record_tdep.size_new_utsname = 390;
+ i386_linux_record_tdep.size_timex = 128;
+ i386_linux_record_tdep.size_mem_dqinfo = 24;
+ i386_linux_record_tdep.size_if_dqblk = 68;
+ i386_linux_record_tdep.size_fs_quota_stat = 68;
+ i386_linux_record_tdep.size_timespec = 8;
+ i386_linux_record_tdep.size_pollfd = 8;
+ i386_linux_record_tdep.size_NFS_FHSIZE = 32;
+ i386_linux_record_tdep.size_knfsd_fh = 132;
+ i386_linux_record_tdep.size_TASK_COMM_LEN = 16;
+ i386_linux_record_tdep.size_sigaction = 140;
+ i386_linux_record_tdep.size_sigset_t = 8;
+ i386_linux_record_tdep.size_siginfo_t = 128;
+ i386_linux_record_tdep.size_cap_user_data_t = 12;
+ i386_linux_record_tdep.size_stack_t = 12;
+ i386_linux_record_tdep.size_off_t = i386_linux_record_tdep.size_long;
+ i386_linux_record_tdep.size_stat64 = 96;
+ i386_linux_record_tdep.size_gid_t = 2;
+ i386_linux_record_tdep.size_uid_t = 2;
+ i386_linux_record_tdep.size_PAGE_SIZE = 4096;
+ i386_linux_record_tdep.size_flock64 = 24;
+ i386_linux_record_tdep.size_user_desc = 16;
+ i386_linux_record_tdep.size_io_event = 32;
+ i386_linux_record_tdep.size_iocb = 64;
+ i386_linux_record_tdep.size_epoll_event = 12;
+ i386_linux_record_tdep.size_itimerspec
+ = i386_linux_record_tdep.size_timespec * 2;
+ i386_linux_record_tdep.size_mq_attr = 32;
+ i386_linux_record_tdep.size_siginfo = 128;
+ i386_linux_record_tdep.size_termios = 36;
+ i386_linux_record_tdep.size_termios2 = 44;
+ i386_linux_record_tdep.size_pid_t = 4;
+ i386_linux_record_tdep.size_winsize = 8;
+ i386_linux_record_tdep.size_serial_struct = 60;
+ i386_linux_record_tdep.size_serial_icounter_struct = 80;
+ i386_linux_record_tdep.size_hayes_esp_config = 12;
+ i386_linux_record_tdep.size_size_t = 4;
+ i386_linux_record_tdep.size_iovec = 8;
+
+ /* These values are the second argument of system call "sys_ioctl".
+ They are obtained from Linux Kernel source. */
+ i386_linux_record_tdep.ioctl_TCGETS = 0x5401;
+ i386_linux_record_tdep.ioctl_TCSETS = 0x5402;
+ i386_linux_record_tdep.ioctl_TCSETSW = 0x5403;
+ i386_linux_record_tdep.ioctl_TCSETSF = 0x5404;
+ i386_linux_record_tdep.ioctl_TCGETA = 0x5405;
+ i386_linux_record_tdep.ioctl_TCSETA = 0x5406;
+ i386_linux_record_tdep.ioctl_TCSETAW = 0x5407;
+ i386_linux_record_tdep.ioctl_TCSETAF = 0x5408;
+ i386_linux_record_tdep.ioctl_TCSBRK = 0x5409;
+ i386_linux_record_tdep.ioctl_TCXONC = 0x540A;
+ i386_linux_record_tdep.ioctl_TCFLSH = 0x540B;
+ i386_linux_record_tdep.ioctl_TIOCEXCL = 0x540C;
+ i386_linux_record_tdep.ioctl_TIOCNXCL = 0x540D;
+ i386_linux_record_tdep.ioctl_TIOCSCTTY = 0x540E;
+ i386_linux_record_tdep.ioctl_TIOCGPGRP = 0x540F;
+ i386_linux_record_tdep.ioctl_TIOCSPGRP = 0x5410;
+ i386_linux_record_tdep.ioctl_TIOCOUTQ = 0x5411;
+ i386_linux_record_tdep.ioctl_TIOCSTI = 0x5412;
+ i386_linux_record_tdep.ioctl_TIOCGWINSZ = 0x5413;
+ i386_linux_record_tdep.ioctl_TIOCSWINSZ = 0x5414;
+ i386_linux_record_tdep.ioctl_TIOCMGET = 0x5415;
+ i386_linux_record_tdep.ioctl_TIOCMBIS = 0x5416;
+ i386_linux_record_tdep.ioctl_TIOCMBIC = 0x5417;
+ i386_linux_record_tdep.ioctl_TIOCMSET = 0x5418;
+ i386_linux_record_tdep.ioctl_TIOCGSOFTCAR = 0x5419;
+ i386_linux_record_tdep.ioctl_TIOCSSOFTCAR = 0x541A;
+ i386_linux_record_tdep.ioctl_FIONREAD = 0x541B;
+ i386_linux_record_tdep.ioctl_TIOCINQ = i386_linux_record_tdep.ioctl_FIONREAD;
+ i386_linux_record_tdep.ioctl_TIOCLINUX = 0x541C;
+ i386_linux_record_tdep.ioctl_TIOCCONS = 0x541D;
+ i386_linux_record_tdep.ioctl_TIOCGSERIAL = 0x541E;
+ i386_linux_record_tdep.ioctl_TIOCSSERIAL = 0x541F;
+ i386_linux_record_tdep.ioctl_TIOCPKT = 0x5420;
+ i386_linux_record_tdep.ioctl_FIONBIO = 0x5421;
+ i386_linux_record_tdep.ioctl_TIOCNOTTY = 0x5422;
+ i386_linux_record_tdep.ioctl_TIOCSETD = 0x5423;
+ i386_linux_record_tdep.ioctl_TIOCGETD = 0x5424;
+ i386_linux_record_tdep.ioctl_TCSBRKP = 0x5425;
+ i386_linux_record_tdep.ioctl_TIOCTTYGSTRUCT = 0x5426;
+ i386_linux_record_tdep.ioctl_TIOCSBRK = 0x5427;
+ i386_linux_record_tdep.ioctl_TIOCCBRK = 0x5428;
+ i386_linux_record_tdep.ioctl_TIOCGSID = 0x5429;
+ i386_linux_record_tdep.ioctl_TCGETS2 = 0x802c542a;
+ i386_linux_record_tdep.ioctl_TCSETS2 = 0x402c542b;
+ i386_linux_record_tdep.ioctl_TCSETSW2 = 0x402c542c;
+ i386_linux_record_tdep.ioctl_TCSETSF2 = 0x402c542d;
+ i386_linux_record_tdep.ioctl_TIOCGPTN = 0x80045430;
+ i386_linux_record_tdep.ioctl_TIOCSPTLCK = 0x40045431;
+ i386_linux_record_tdep.ioctl_FIONCLEX = 0x5450;
+ i386_linux_record_tdep.ioctl_FIOCLEX = 0x5451;
+ i386_linux_record_tdep.ioctl_FIOASYNC = 0x5452;
+ i386_linux_record_tdep.ioctl_TIOCSERCONFIG = 0x5453;
+ i386_linux_record_tdep.ioctl_TIOCSERGWILD = 0x5454;
+ i386_linux_record_tdep.ioctl_TIOCSERSWILD = 0x5455;
+ i386_linux_record_tdep.ioctl_TIOCGLCKTRMIOS = 0x5456;
+ i386_linux_record_tdep.ioctl_TIOCSLCKTRMIOS = 0x5457;
+ i386_linux_record_tdep.ioctl_TIOCSERGSTRUCT = 0x5458;
+ i386_linux_record_tdep.ioctl_TIOCSERGETLSR = 0x5459;
+ i386_linux_record_tdep.ioctl_TIOCSERGETMULTI = 0x545A;
+ i386_linux_record_tdep.ioctl_TIOCSERSETMULTI = 0x545B;
+ i386_linux_record_tdep.ioctl_TIOCMIWAIT = 0x545C;
+ i386_linux_record_tdep.ioctl_TIOCGICOUNT = 0x545D;
+ i386_linux_record_tdep.ioctl_TIOCGHAYESESP = 0x545E;
+ i386_linux_record_tdep.ioctl_TIOCSHAYESESP = 0x545F;
+ i386_linux_record_tdep.ioctl_FIOQSIZE = 0x5460;
+
+ /* These values are the second argument of system call "sys_fcntl"
+ and "sys_fcntl64". They are obtained from Linux Kernel source. */
+ i386_linux_record_tdep.fcntl_F_GETLK = 5;
+ i386_linux_record_tdep.fcntl_F_GETLK64 = 12;
+ i386_linux_record_tdep.fcntl_F_SETLK64 = 13;
+ i386_linux_record_tdep.fcntl_F_SETLKW64 = 14;
+
+ 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;
+ i386_linux_record_tdep.arg6 = I386_EBP_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);
/* 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. */
projects / deliverable / binutils-gdb.git / blobdiff