/* Motorola m68k native support for GNU/Linux.
- Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1998, 2000-2012 Free Software Foundation, Inc.
This file is part of GDB.
#include "target.h"
-/* Prototypes for supply_gregset etc. */
+/* Prototypes for supply_gregset etc. */
#include "gregset.h"
\f
/* This table must line up with gdbarch_register_name in "m68k-tdep.c". */
int
getfpregs_supplies (int regno)
{
- return gdbarch_fp0_regnum (current_gdbarch) <= regno
- && regno <= M68K_FPI_REGNUM;
+ return M68K_FP0_REGNUM <= regno && regno <= M68K_FPI_REGNUM;
}
/* Does the current host support the GETREGS request? */
/* Fetching registers directly from the U area, one at a time. */
-/* FIXME: This duplicates code from `inptrace.c'. The problem is that we
- define FETCH_INFERIOR_REGISTERS since we want to use our own versions
- of {fetch,store}_inferior_registers that use the GETREGS request. This
- means that the code in `infptrace.c' is #ifdef'd out. But we need to
- fall back on that code when GDB is running on top of a kernel that
- doesn't support the GETREGS request. */
-
-#ifndef PT_READ_U
-#define PT_READ_U PTRACE_PEEKUSR
-#endif
-#ifndef PT_WRITE_U
-#define PT_WRITE_U PTRACE_POKEUSR
-#endif
-
/* Fetch one register. */
static void
fetch_register (struct regcache *regcache, int regno)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- /* This isn't really an address. But ptrace thinks of it as one. */
- CORE_ADDR regaddr;
- char mess[128]; /* For messages */
+ long regaddr;
int i;
char buf[MAX_REGISTER_SIZE];
int tid;
- if (gdbarch_cannot_fetch_register (gdbarch, regno))
- {
- memset (buf, '\0', register_size (gdbarch, regno)); /* Supply zeroes */
- regcache_raw_supply (regcache, regno, buf);
- return;
- }
-
- /* Overload thread id onto process id */
+ /* Overload thread id onto process id. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
- tid = PIDGET (inferior_ptid); /* no thread id, just use process id */
+ tid = PIDGET (inferior_ptid); /* no thread id, just use
+ process id. */
regaddr = 4 * regmap[regno];
- for (i = 0; i < register_size (gdbarch, regno);
- i += sizeof (PTRACE_TYPE_RET))
+ for (i = 0; i < register_size (gdbarch, regno); i += sizeof (long))
{
errno = 0;
- *(PTRACE_TYPE_RET *) &buf[i] = ptrace (PT_READ_U, tid,
- (PTRACE_TYPE_ARG3) regaddr, 0);
- regaddr += sizeof (PTRACE_TYPE_RET);
+ *(long *) &buf[i] = ptrace (PTRACE_PEEKUSER, tid, regaddr, 0);
+ regaddr += sizeof (long);
if (errno != 0)
- {
- sprintf (mess, "reading register %s (#%d)",
- gdbarch_register_name (gdbarch, regno), regno);
- perror_with_name (mess);
- }
+ error (_("Couldn't read register %s (#%d): %s."),
+ gdbarch_register_name (gdbarch, regno),
+ regno, safe_strerror (errno));
}
regcache_raw_supply (regcache, regno, buf);
}
/* Fetch register values from the inferior.
If REGNO is negative, do this for all registers.
- Otherwise, REGNO specifies which register (so we can save time). */
+ Otherwise, REGNO specifies which register (so we can save time). */
static void
old_fetch_inferior_registers (struct regcache *regcache, int regno)
}
}
-/* Store one register. */
+/* Store one register. */
static void
store_register (const struct regcache *regcache, int regno)
{
- struct gdbarch *gdbarch = reg_regcache_arch (regcache);
- /* This isn't really an address. But ptrace thinks of it as one. */
- CORE_ADDR regaddr;
- char mess[128]; /* For messages */
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ long regaddr;
int i;
int tid;
char buf[MAX_REGISTER_SIZE];
- if (gdbarch_cannot_store_register (gdbarch, regno))
- return;
-
- /* Overload thread id onto process id */
+ /* Overload thread id onto process id. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
- tid = PIDGET (inferior_ptid); /* no thread id, just use process id */
+ tid = PIDGET (inferior_ptid); /* no thread id, just use
+ process id. */
regaddr = 4 * regmap[regno];
- /* Put the contents of regno into a local buffer */
+ /* Put the contents of regno into a local buffer. */
regcache_raw_collect (regcache, regno, buf);
- /* Store the local buffer into the inferior a chunk at the time. */
- for (i = 0; i < register_size (gdbarch, regno);
- i += sizeof (PTRACE_TYPE_RET))
+ /* Store the local buffer into the inferior a chunk at the time. */
+ for (i = 0; i < register_size (gdbarch, regno); i += sizeof (long))
{
errno = 0;
- ptrace (PT_WRITE_U, tid, (PTRACE_TYPE_ARG3) regaddr,
- *(PTRACE_TYPE_RET *) (buf + i));
- regaddr += sizeof (PTRACE_TYPE_RET);
+ ptrace (PTRACE_POKEUSER, tid, regaddr, *(long *) &buf[i]);
+ regaddr += sizeof (long);
if (errno != 0)
- {
- sprintf (mess, "writing register %s (#%d)",
- gdbarch_register_name (gdbarch, regno), regno);
- perror_with_name (mess);
- }
+ error (_("Couldn't write register %s (#%d): %s."),
+ gdbarch_register_name (gdbarch, regno),
+ regno, safe_strerror (errno));
}
}
\f
/* Given a pointer to a general register set in /proc format
(elf_gregset_t *), unpack the register contents and supply
- them as gdb's idea of the current register values. */
+ them as gdb's idea of the current register values. */
void
supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp)
#else
-static void fetch_regs (struct regcache *regcache, int tid) {}
-static void store_regs (const struct regcache *regcache, int tid, int regno) {}
+static void fetch_regs (struct regcache *regcache, int tid)
+{
+}
+
+static void store_regs (const struct regcache *regcache, int tid, int regno)
+{
+}
#endif
#else
-static void fetch_fpregs (struct regcache *regcache, int tid) {}
-static void store_fpregs (const struct regcache *regcache, int tid, int regno) {}
+static void fetch_fpregs (struct regcache *regcache, int tid)
+{
+}
+
+static void store_fpregs (const struct regcache *regcache, int tid, int regno)
+{
+}
#endif
\f
registers). */
static void
-m68k_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
+m68k_linux_fetch_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
int tid;
/* GNU/Linux LWP ID's are process ID's. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
- tid = PIDGET (inferior_ptid); /* Not a threaded program. */
+ tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_GETFPXREGS request whenever possible, since it
transfers more registers in one system call, and we'll cache the
do this for all registers (including the floating point and SSE
registers). */
static void
-m68k_linux_store_inferior_registers (struct regcache *regcache, int regno)
+m68k_linux_store_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
int tid;