/* Low level Unix child interface to ptrace, for GDB when running under Unix.
Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1998, 1999, 2000, 2001, 2002
+ 1998, 1999, 2000, 2001, 2002, 2004
Free Software Foundation, Inc.
This file is part of GDB.
#include <signal.h>
#include <sys/ioctl.h>
-#ifdef HAVE_PTRACE_H
-#include <ptrace.h>
-#else
-#ifdef HAVE_SYS_PTRACE_H
-#include <sys/ptrace.h>
-#endif
-#endif
-
-#if !defined (PT_READ_I)
-#define PT_READ_I 1 /* Read word from text space */
-#endif
-#if !defined (PT_READ_D)
-#define PT_READ_D 2 /* Read word from data space */
-#endif
-#if !defined (PT_READ_U)
-#define PT_READ_U 3 /* Read word from kernel user struct */
-#endif
-#if !defined (PT_WRITE_I)
-#define PT_WRITE_I 4 /* Write word to text space */
-#endif
-#if !defined (PT_WRITE_D)
-#define PT_WRITE_D 5 /* Write word to data space */
-#endif
-#if !defined (PT_WRITE_U)
-#define PT_WRITE_U 6 /* Write word to kernel user struct */
-#endif
-#if !defined (PT_CONTINUE)
-#define PT_CONTINUE 7 /* Continue after signal */
-#endif
-#if !defined (PT_STEP)
-#define PT_STEP 9 /* Set flag for single stepping */
-#endif
-#if !defined (PT_KILL)
-#define PT_KILL 8 /* Send child a SIGKILL signal */
-#endif
-
-#ifndef PT_ATTACH
-#define PT_ATTACH PTRACE_ATTACH
-#endif
-#ifndef PT_DETACH
-#define PT_DETACH PTRACE_DETACH
-#endif
+#include "gdb_ptrace.h"
#include "gdbcore.h"
-#ifndef NO_SYS_FILE
+#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
#if 0
#if !defined (FETCH_INFERIOR_REGISTERS)
#include <sys/user.h> /* Probably need to poke the user structure */
-#if defined (KERNEL_U_ADDR_BSD)
-#include <a.out.h> /* For struct nlist */
-#endif /* KERNEL_U_ADDR_BSD. */
#endif /* !FETCH_INFERIOR_REGISTERS */
#if !defined (CHILD_XFER_MEMORY)
static void store_register (int);
#endif
-void _initialize_kernel_u_addr (void);
void _initialize_infptrace (void);
\f
if (request == PT_SETTRC)
{
errno = 0;
-#if !defined (FIVE_ARG_PTRACE)
+#ifndef PTRACE_TYPE_ARG5
pt_status = ptrace (PT_SETTRC, pid, addr, data);
#else
/* Deal with HPUX 8.0 braindamage. We never use the
saved_errno = errno;
errno = 0;
#endif
-#if !defined (FIVE_ARG_PTRACE)
+#ifndef PTRACE_TYPE_ARG5
pt_status = ptrace (request, pid, addr, data);
#else
/* Deal with HPUX 8.0 braindamage. We never use the
}
-#if defined (DEBUG_PTRACE) || defined (FIVE_ARG_PTRACE)
+#if defined (DEBUG_PTRACE) || defined (PTRACE_TYPE_ARG5)
/* For the rest of the file, use an extra level of indirection */
/* This lets us breakpoint usefully on call_ptrace. */
#define ptrace call_ptrace
return wstate;
}
+#ifndef KILL_INFERIOR
void
kill_inferior (void)
{
The kill call causes problems under hpux10, so it's been removed;
if this causes problems we'll deal with them as they arise. */
- ptrace (PT_KILL, pid, (PTRACE_ARG3_TYPE) 0, 0);
+ ptrace (PT_KILL, pid, (PTRACE_TYPE_ARG3) 0, 0);
ptrace_wait (null_ptid, &status);
target_mourn_inferior ();
}
+#endif /* KILL_INFERIOR */
#ifndef CHILD_RESUME
all threads" and "resume inferior_ptid" are the same. */
pid = PIDGET (inferior_ptid);
- /* An address of (PTRACE_ARG3_TYPE)1 tells ptrace to continue from where
+ /* An address of (PTRACE_TYPE_ARG3)1 tells ptrace to continue from where
it was. (If GDB wanted it to start some other way, we have already
written a new PC value to the child.)
if (SOFTWARE_SINGLE_STEP_P ())
internal_error (__FILE__, __LINE__, "failed internal consistency check"); /* Make sure this doesn't happen. */
else
- ptrace (PT_STEP, pid, (PTRACE_ARG3_TYPE) 1,
+ ptrace (PT_STEP, pid, (PTRACE_TYPE_ARG3) 1,
target_signal_to_host (signal));
}
else
- ptrace (PT_CONTINUE, pid, (PTRACE_ARG3_TYPE) 1,
+ ptrace (PT_CONTINUE, pid, (PTRACE_TYPE_ARG3) 1,
target_signal_to_host (signal));
if (errno)
}
#endif /* CHILD_RESUME */
\f
-
-#ifdef ATTACH_DETACH
/* Start debugging the process whose number is PID. */
int
attach (int pid)
{
+#ifdef PT_ATTACH
errno = 0;
- ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0);
+ ptrace (PT_ATTACH, pid, (PTRACE_TYPE_ARG3) 0, 0);
if (errno)
perror_with_name ("ptrace");
attach_flag = 1;
return pid;
+#else
+ error ("This system does not support attaching to a process");
+#endif
}
/* Stop debugging the process whose number is PID
void
detach (int signal)
{
+#ifdef PT_DETACH
errno = 0;
- ptrace (PT_DETACH, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) 1,
+ ptrace (PT_DETACH, PIDGET (inferior_ptid), (PTRACE_TYPE_ARG3) 1,
signal);
- if (errno && errno != ESRCH)
- perror_with_name ("ptrace");
+ if (errno)
+ print_sys_errmsg ("ptrace", errno);
attach_flag = 0;
+#else
+ error ("This system does not support detaching from a process");
+#endif
}
-#endif /* ATTACH_DETACH */
\f
/* Default the type of the ptrace transfer to int. */
#ifndef PTRACE_XFER_TYPE
#define PTRACE_XFER_TYPE int
#endif
-/* KERNEL_U_ADDR is the amount to subtract from u.u_ar0
- to get the offset in the core file of the register values. */
-#if defined (KERNEL_U_ADDR_BSD) && !defined (FETCH_INFERIOR_REGISTERS)
-/* Get kernel_u_addr using BSD-style nlist(). */
-CORE_ADDR kernel_u_addr;
-#endif /* KERNEL_U_ADDR_BSD. */
-
-void
-_initialize_kernel_u_addr (void)
-{
-#if defined (KERNEL_U_ADDR_BSD) && !defined (FETCH_INFERIOR_REGISTERS)
- struct nlist names[2];
-
- names[0].n_un.n_name = "_u";
- names[1].n_un.n_name = NULL;
- if (nlist ("/vmunix", names) == 0)
- kernel_u_addr = names[0].n_value;
- else
- internal_error (__FILE__, __LINE__,
- "Unable to get kernel u area address.");
-#endif /* KERNEL_U_ADDR_BSD. */
-}
-
#if !defined (FETCH_INFERIOR_REGISTERS)
#if !defined (offsetof)
#if !defined (U_REGS_OFFSET)
#define U_REGS_OFFSET \
ptrace (PT_READ_U, PIDGET (inferior_ptid), \
- (PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \
+ (PTRACE_TYPE_ARG3) (offsetof (struct user, u_ar0)), 0) \
- KERNEL_U_ADDR
#endif
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
- register int i;
+ int i;
unsigned int offset; /* Offset of registers within the u area. */
- char *buf = alloca (MAX_REGISTER_RAW_SIZE);
+ char buf[MAX_REGISTER_SIZE];
int tid;
if (CANNOT_FETCH_REGISTER (regno))
{
- memset (buf, '\0', REGISTER_RAW_SIZE (regno)); /* Supply zeroes */
- supply_register (regno, buf);
+ regcache_raw_supply (current_regcache, regno, NULL);
return;
}
offset = U_REGS_OFFSET;
regaddr = register_addr (regno, offset);
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))
+ for (i = 0; i < register_size (current_gdbarch, regno); i += sizeof (PTRACE_XFER_TYPE))
{
errno = 0;
*(PTRACE_XFER_TYPE *) & buf[i] = ptrace (PT_READ_U, tid,
- (PTRACE_ARG3_TYPE) regaddr, 0);
+ (PTRACE_TYPE_ARG3) regaddr, 0);
regaddr += sizeof (PTRACE_XFER_TYPE);
if (errno != 0)
{
perror_with_name (mess);
}
}
- supply_register (regno, buf);
+ regcache_raw_supply (current_regcache, regno, buf);
}
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
- register int i;
+ int i;
unsigned int offset; /* Offset of registers within the u area. */
int tid;
- char *buf = alloca (MAX_REGISTER_RAW_SIZE);
+ char buf[MAX_REGISTER_SIZE];
if (CANNOT_STORE_REGISTER (regno))
{
regaddr = register_addr (regno, offset);
/* Put the contents of regno into a local buffer */
- regcache_collect (regno, buf);
+ regcache_raw_collect (current_regcache, regno, buf);
/* Store the local buffer into the inferior a chunk at the time. */
- for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (PTRACE_XFER_TYPE))
+ for (i = 0; i < register_size (current_gdbarch, regno); i += sizeof (PTRACE_XFER_TYPE))
{
errno = 0;
- ptrace (PT_WRITE_U, tid, (PTRACE_ARG3_TYPE) regaddr,
+ ptrace (PT_WRITE_U, tid, (PTRACE_TYPE_ARG3) regaddr,
*(PTRACE_XFER_TYPE *) (buf + i));
regaddr += sizeof (PTRACE_XFER_TYPE);
if (errno != 0)
{
int i;
/* Round starting address down to longword boundary. */
- CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_XFER_TYPE);
+ CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_TYPE_RET);
/* Round ending address up; get number of longwords that makes. */
- int count = ((((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1)
- / sizeof (PTRACE_XFER_TYPE));
- int alloc = count * sizeof (PTRACE_XFER_TYPE);
- PTRACE_XFER_TYPE *buffer;
+ int count = ((((memaddr + len) - addr) + sizeof (PTRACE_TYPE_RET) - 1)
+ / sizeof (PTRACE_TYPE_RET));
+ int alloc = count * sizeof (PTRACE_TYPE_RET);
+ PTRACE_TYPE_RET *buffer;
struct cleanup *old_chain = NULL;
#ifdef PT_IO
/* Allocate buffer of that many longwords. */
if (len < GDB_MAX_ALLOCA)
{
- buffer = (PTRACE_XFER_TYPE *) alloca (alloc);
+ buffer = (PTRACE_TYPE_RET *) alloca (alloc);
}
else
{
- buffer = (PTRACE_XFER_TYPE *) xmalloc (alloc);
+ buffer = (PTRACE_TYPE_RET *) xmalloc (alloc);
old_chain = make_cleanup (xfree, buffer);
}
{
/* Fill start and end extra bytes of buffer with existing memory
data. */
- if (addr != memaddr || len < (int) sizeof (PTRACE_XFER_TYPE))
+ if (addr != memaddr || len < (int) sizeof (PTRACE_TYPE_RET))
{
/* Need part of initial word -- fetch it. */
buffer[0] = ptrace (PT_READ_I, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr, 0);
+ (PTRACE_TYPE_ARG3) addr, 0);
}
if (count > 1) /* FIXME, avoid if even boundary. */
{
buffer[count - 1] =
ptrace (PT_READ_I, PIDGET (inferior_ptid),
- ((PTRACE_ARG3_TYPE)
- (addr + (count - 1) * sizeof (PTRACE_XFER_TYPE))), 0);
+ ((PTRACE_TYPE_ARG3)
+ (addr + (count - 1) * sizeof (PTRACE_TYPE_RET))), 0);
}
/* Copy data to be written over corresponding part of buffer. */
- memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)),
+ memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)),
myaddr, len);
/* Write the entire buffer. */
- for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
+ for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET))
{
errno = 0;
ptrace (PT_WRITE_D, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr, buffer[i]);
+ (PTRACE_TYPE_ARG3) addr, buffer[i]);
if (errno)
{
/* Using the appropriate one (I or D) is necessary for
Gould NP1, at least. */
errno = 0;
ptrace (PT_WRITE_I, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr, buffer[i]);
+ (PTRACE_TYPE_ARG3) addr, buffer[i]);
}
if (errno)
return 0;
}
-#ifdef CLEAR_INSN_CACHE
- CLEAR_INSN_CACHE ();
-#endif
}
else
{
/* Read all the longwords. */
- for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
+ for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET))
{
errno = 0;
buffer[i] = ptrace (PT_READ_I, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) addr, 0);
+ (PTRACE_TYPE_ARG3) addr, 0);
if (errno)
return 0;
QUIT;
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr,
- (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)),
+ (char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)),
len);
}
}
printf_filtered ("%s:", paddr (udot_off));
}
- udot_val = ptrace (PT_READ_U, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) udot_off, 0);
+ udot_val = ptrace (PT_READ_U, PIDGET (inferior_ptid), (PTRACE_TYPE_ARG3) udot_off, 0);
if (errno != 0)
{
sprintf (mess, "\nreading user struct at offset 0x%s",
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