riscv
/
binutils-gdb
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

My last commit introduced a bunch of mysterious whitespace changes; I 

don't know where they came from.  They weren't intentional, so this
change reverts them.
binutils-2_11-branch
Jim Blandy 27 years ago
parent
8f0a00f878
commit
77d2aaae45
1 changed files with 126 additions and 42 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 168
      gdb/i386v-nat.c

168
gdb/i386v-nat.c
View File

@ -1,31 +1,30 @@
/* Intel 386 native support for SYSV systems (pre-SVR4).
Copyright (C) 1988, 89, 91, 92, 94, 96, 1998 Free Software Foundation, Inc.
This file is part of GDB.
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 2 of the License, or
(at your option) any later version.
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 2 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.
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#ifdef HAVE_PTRACE_H
#include <ptrace.h>
# include <ptrace.h>
#else
#ifdef HAVE_SYS_PTRACE_H
#include <sys/ptrace.h>
#endif
# ifdef HAVE_SYS_PTRACE_H
# include <sys/ptrace.h>
# endif
#endif
#include "frame.h"
@ -53,11 +52,11 @@
*/
#ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
#ifdef HAVE_ASM_DEBUGREG_H
#include <asm/debugreg.h>
#else
#include <sys/debugreg.h>
#endif
# ifdef HAVE_ASM_DEBUGREG_H
# include <asm/debugreg.h>
# else
# include <sys/debugreg.h>
# endif
#endif
#include <sys/file.h>
@ -70,11 +69,11 @@
#include "floatformat.h"
#include "target.h"
/* this table must line up with REGISTER_NAMES in tm-i386v.h */
/* symbols like 'EAX' come from <sys/reg.h> */
static int regmap[] =
static int regmap[] =
{
EAX, ECX, EDX, EBX,
UESP, EBP, ESI, EDI,
@ -97,22 +96,22 @@ i386_register_u_addr (blockend, regnum)
ubase = blockend;
/* FIXME: Should have better way to test floating point range */
if (regnum >= FP0_REGNUM && regnum <= (FP0_REGNUM + 7))
if (regnum >= FP0_REGNUM && regnum <= (FP0_REGNUM + 7))
{
#ifdef KSTKSZ /* SCO, and others? */
#ifdef KSTKSZ /* SCO, and others? */
ubase += 4 * (SS + 1) - KSTKSZ;
fpstate = ubase + ((char *) &u.u_fps.u_fpstate - (char *) &u);
fpstate = ubase + ((char *)&u.u_fps.u_fpstate - (char *)&u);
return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
#else
fpstate = ubase + ((char *) &u.i387.st_space - (char *) &u);
fpstate = ubase + ((char *)&u.i387.st_space - (char *)&u);
return (fpstate + 10 * (regnum - FP0_REGNUM));
#endif
}
}
else
{
return (ubase + 4 * regmap[regnum]);
}
}
int
@ -135,7 +134,7 @@ static CORE_ADDR address_lookup[DR_LASTADDR - DR_FIRSTADDR + 1];
static int
i386_insert_aligned_watchpoint PARAMS ((int, CORE_ADDR, CORE_ADDR, int,
int));
int));
static int
i386_insert_nonaligned_watchpoint PARAMS ((int, CORE_ADDR, CORE_ADDR, int,
@ -165,7 +164,7 @@ i386_insert_aligned_watchpoint (pid, waddr, addr, len, rw)
int read_write_bits, len_bits;
int free_debug_register;
int register_number;
/* Look for a free debug register. */
for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++)
{
@ -196,7 +195,7 @@ i386_insert_aligned_watchpoint (pid, waddr, addr, len, rw)
}
else
return i386_insert_nonaligned_watchpoint (pid, waddr, addr, len, rw);
free_debug_register = i;
register_number = free_debug_register - DR_FIRSTADDR;
debug_control_mirror |=
@ -206,7 +205,7 @@ i386_insert_aligned_watchpoint (pid, waddr, addr, len, rw)
(1 << (DR_LOCAL_ENABLE_SHIFT + DR_ENABLE_SIZE * register_number));
debug_control_mirror |= DR_LOCAL_SLOWDOWN;
debug_control_mirror &= ~DR_CONTROL_RESERVED;
ptrace (6, pid, offsetof (struct user, u_debugreg[DR_CONTROL]),
debug_control_mirror);
ptrace (6, pid, offsetof (struct user, u_debugreg[free_debug_register]),
@ -229,12 +228,11 @@ i386_insert_nonaligned_watchpoint (pid, waddr, addr, len, rw)
int size;
int rv;
static int size_try_array[4][4] =
{
{ 1, 1, 1, 1 }, /* trying size one */
{ 2, 1, 2, 1 }, /* trying size two */
{ 2, 1, 2, 1 }, /* trying size three */
{ 4, 1, 2, 1 } /* trying size four */
static int size_try_array[16] = {
1, 1, 1, 1, /* trying size one */
2, 1, 2, 1, /* trying size two */
2, 1, 2, 1, /* trying size three */
4, 1, 2, 1 /* trying size four */
};
rv = 0;
@ -242,7 +240,8 @@ i386_insert_nonaligned_watchpoint (pid, waddr, addr, len, rw)
{
align = addr % 4;
/* Four is the maximum length for 386. */
size = size_try_array[len > 4 ? 3 : len - 1][align];
size = (len > 4) ? 3 : len - 1;
size = size_try_array[size * 4 + align];
rv = i386_insert_aligned_watchpoint (pid, waddr, addr, size, rw);
if (rv)
@ -288,7 +287,7 @@ i386_remove_watchpoint (pid, addr, len)
CORE_ADDR
i386_stopped_by_watchpoint (pid)
int pid;
int pid;
{
int i;
int status;
@ -306,3 +305,88 @@ i386_stopped_by_watchpoint (pid)
}
#endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */
#if 0
/* using FLOAT_INFO as is would be a problem. FLOAT_INFO is called
via a command xxx and eventually calls ptrace without ever having
traversed the target vector. This would be terribly impolite
behaviour for a sun4 hosted remote gdb.
A fix might be to move this code into the "info registers" command.
rich@cygnus.com 15 Sept 92. */
i386_float_info ()
{
struct user u; /* just for address computations */
int i;
/* fpstate defined in <sys/user.h> */
struct fpstate *fpstatep;
char buf[sizeof (struct fpstate) + 2 * sizeof (int)];
unsigned int uaddr;
char fpvalid = 0;
unsigned int rounded_addr;
unsigned int rounded_size;
extern int corechan;
int skip;
uaddr = (char *)&u.u_fpvalid - (char *)&u;
if (target_has_execution)
{
unsigned int data;
unsigned int mask;
rounded_addr = uaddr & -sizeof (int);
data = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) rounded_addr, 0);
mask = 0xff << ((uaddr - rounded_addr) * 8);
fpvalid = ((data & mask) != 0);
}
#if 0
else
{
if (lseek (corechan, uaddr, 0) < 0)
perror ("seek on core file");
if (myread (corechan, &fpvalid, 1) < 0)
perror ("read on core file");
}
#endif /* no core support yet */
if (fpvalid == 0)
{
printf_unfiltered ("no floating point status saved\n");
return;
}
uaddr = (char *)&U_FPSTATE(u) - (char *)&u;
if (target_has_execution)
{
int *ip;
rounded_addr = uaddr & -sizeof (int);
rounded_size = (((uaddr + sizeof (struct fpstate)) - uaddr) +
sizeof (int) - 1) / sizeof (int);
skip = uaddr - rounded_addr;
ip = (int *)buf;
for (i = 0; i < rounded_size; i++)
{
*ip++ = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) rounded_addr, 0);
rounded_addr += sizeof (int);
}
}
#if 0
else
{
if (lseek (corechan, uaddr, 0) < 0)
perror_with_name ("seek on core file");
if (myread (corechan, buf, sizeof (struct fpstate)) < 0)
perror_with_name ("read from core file");
skip = 0;
}
#endif /* 0 */
fpstatep = (struct fpstate *)(buf + skip);
print_387_status (fpstatep->status, (struct env387 *)fpstatep->state);
}
#endif /* never */

Write Preview
Loading…
Cancel
Save