/* Motorola m68k native support for GNU/Linux.
- Copyright 1996, 1998, 2000, 2001, 2002 Free Software Foundation,
- Inc.
+ Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "frame.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "regcache.h"
+#include "target.h"
+#include "linux-nat.h"
#include "m68k-tdep.h"
#include "floatformat.h"
#include "target.h"
+
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
\f
/* This table must line up with REGISTER_NAME in "m68k-tdep.c". */
static const int regmap[] =
\f
-/* BLOCKEND is the value of u.u_ar0, and points to the place where GS
- is stored. */
-
-int
-m68k_linux_register_u_addr (int blockend, int regnum)
-{
- return (blockend + 4 * regmap[regnum]);
-}
-\f
-
/* Fetching registers directly from the U area, one at a time. */
/* FIXME: This duplicates code from `inptrace.c'. The problem is that we
#define PT_WRITE_U PTRACE_POKEUSR
#endif
-/* Default the type of the ptrace transfer to int. */
-#ifndef PTRACE_XFER_TYPE
-#define PTRACE_XFER_TYPE int
-#endif
-
/* Fetch one register. */
static void
-fetch_register (int regno)
+fetch_register (struct regcache *regcache, int regno)
{
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
int i;
- unsigned int offset; /* Offset of registers within the u area. */
char buf[MAX_REGISTER_SIZE];
int tid;
if (CANNOT_FETCH_REGISTER (regno))
{
memset (buf, '\0', register_size (current_gdbarch, regno)); /* Supply zeroes */
- regcache_raw_supply (current_regcache, regno, buf);
+ regcache_raw_supply (regcache, regno, buf);
return;
}
if (tid == 0)
tid = PIDGET (inferior_ptid); /* no thread id, just use process id */
- offset = U_REGS_OFFSET;
-
- regaddr = register_addr (regno, offset);
+ regaddr = 4 * regmap[regno];
for (i = 0; i < register_size (current_gdbarch, regno);
- i += sizeof (PTRACE_XFER_TYPE))
+ i += sizeof (PTRACE_TYPE_RET))
{
errno = 0;
- *(PTRACE_XFER_TYPE *) &buf[i] = ptrace (PT_READ_U, tid,
- (PTRACE_ARG3_TYPE) regaddr, 0);
- regaddr += sizeof (PTRACE_XFER_TYPE);
+ *(PTRACE_TYPE_RET *) &buf[i] = ptrace (PT_READ_U, tid,
+ (PTRACE_TYPE_ARG3) regaddr, 0);
+ regaddr += sizeof (PTRACE_TYPE_RET);
if (errno != 0)
{
sprintf (mess, "reading register %s (#%d)",
perror_with_name (mess);
}
}
- regcache_raw_supply (current_regcache, regno, buf);
+ 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). */
-void
-old_fetch_inferior_registers (int regno)
+static void
+old_fetch_inferior_registers (struct regcache *regcache, int regno)
{
if (regno >= 0)
{
- fetch_register (regno);
+ fetch_register (regcache, regno);
}
else
{
for (regno = 0; regno < NUM_REGS; regno++)
{
- fetch_register (regno);
+ fetch_register (regcache, regno);
}
}
}
/* Store one register. */
static void
-store_register (int regno)
+store_register (const struct regcache *regcache, int regno)
{
/* This isn't really an address. But ptrace thinks of it as one. */
CORE_ADDR regaddr;
char mess[128]; /* For messages */
int i;
- unsigned int offset; /* Offset of registers within the u area. */
int tid;
char buf[MAX_REGISTER_SIZE];
if (tid == 0)
tid = PIDGET (inferior_ptid); /* no thread id, just use process id */
- offset = U_REGS_OFFSET;
-
- regaddr = register_addr (regno, offset);
+ regaddr = 4 * regmap[regno];
/* Put the contents of regno into a local buffer */
- regcache_raw_collect (current_regcache, regno, buf);
+ regcache_raw_collect (regcache, regno, buf);
/* Store the local buffer into the inferior a chunk at the time. */
for (i = 0; i < register_size (current_gdbarch, regno);
- i += sizeof (PTRACE_XFER_TYPE))
+ i += sizeof (PTRACE_TYPE_RET))
{
errno = 0;
- ptrace (PT_WRITE_U, tid, (PTRACE_ARG3_TYPE) regaddr,
- *(PTRACE_XFER_TYPE *) (buf + i));
- regaddr += sizeof (PTRACE_XFER_TYPE);
+ ptrace (PT_WRITE_U, tid, (PTRACE_TYPE_ARG3) regaddr,
+ *(PTRACE_TYPE_RET *) (buf + i));
+ regaddr += sizeof (PTRACE_TYPE_RET);
if (errno != 0)
{
sprintf (mess, "writing register %s (#%d)",
If REGNO is negative, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
-void
-old_store_inferior_registers (int regno)
+static void
+old_store_inferior_registers (const struct regcache *regcache, int regno)
{
if (regno >= 0)
{
- store_register (regno);
+ store_register (regcache, regno);
}
else
{
for (regno = 0; regno < NUM_REGS; regno++)
{
- store_register (regno);
+ store_register (regcache, regno);
}
}
}
(elf_gregset_t *), unpack the register contents and supply
them as gdb's idea of the current register values. */
-
-/* Note both m68k-tdep.c and m68klinux-nat.c contain definitions
- for supply_gregset and supply_fpregset. The definitions
- in m68k-tdep.c are valid if USE_PROC_FS is defined. Otherwise,
- the definitions in m68klinux-nat.c will be used. This is a
- bit of a hack. The supply_* routines do not belong in
- *_tdep.c files. But, there are several lynx ports that currently
- depend on these definitions. */
-
-#ifndef USE_PROC_FS
-
-/* Prototypes for supply_gregset etc. */
-#include "gregset.h"
-
void
-supply_gregset (elf_gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp)
{
- elf_greg_t *regp = (elf_greg_t *) gregsetp;
+ const elf_greg_t *regp = (const elf_greg_t *) gregsetp;
int regi;
for (regi = M68K_D0_REGNUM; regi <= SP_REGNUM; regi++)
- regcache_raw_supply (current_regcache, regi, (char *) ®p[regmap[regi]]);
- regcache_raw_supply (current_regcache, PS_REGNUM, (char *) ®p[PT_SR]);
- regcache_raw_supply (current_regcache, PC_REGNUM, (char *) ®p[PT_PC]);
+ regcache_raw_supply (regcache, regi, ®p[regmap[regi]]);
+ regcache_raw_supply (regcache, PS_REGNUM, ®p[PT_SR]);
+ regcache_raw_supply (regcache, PC_REGNUM, ®p[PT_PC]);
}
/* Fill register REGNO (if it is a general-purpose register) in
*GREGSETPS with the value in GDB's register array. If REGNO is -1,
do this for all registers. */
void
-fill_gregset (elf_gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache,
+ elf_gregset_t *gregsetp, int regno)
{
elf_greg_t *regp = (elf_greg_t *) gregsetp;
int i;
for (i = 0; i < NUM_GREGS; i++)
if (regno == -1 || regno == i)
- regcache_raw_collect (current_regcache, i, regp + regmap[i]);
+ regcache_raw_collect (regcache, i, regp + regmap[i]);
}
#ifdef HAVE_PTRACE_GETREGS
store their values in GDB's register array. */
static void
-fetch_regs (int tid)
+fetch_regs (struct regcache *regcache, int tid)
{
elf_gregset_t regs;
perror_with_name (_("Couldn't get registers"));
}
- supply_gregset (®s);
+ supply_gregset (regcache, (const elf_gregset_t *) ®s);
}
/* Store all valid general-purpose registers in GDB's register array
into the process/thread specified by TID. */
static void
-store_regs (int tid, int regno)
+store_regs (const struct regcache *regcache, int tid, int regno)
{
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (int) ®s) < 0)
perror_with_name (_("Couldn't get registers"));
- fill_gregset (®s, regno);
+ fill_gregset (regcache, ®s, regno);
if (ptrace (PTRACE_SETREGS, tid, 0, (int) ®s) < 0)
perror_with_name (_("Couldn't write registers"));
#else
-static void fetch_regs (int tid) {}
-static void store_regs (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
/* Transfering floating-point registers between GDB, inferiors and cores. */
/* What is the address of fpN within the floating-point register set F? */
-#define FPREG_ADDR(f, n) ((char *) &(f)->fpregs[(n) * 3])
+#define FPREG_ADDR(f, n) (&(f)->fpregs[(n) * 3])
/* Fill GDB's register array with the floating-point register values in
*FPREGSETP. */
void
-supply_fpregset (elf_fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp)
{
int regi;
for (regi = FP0_REGNUM; regi < FP0_REGNUM + 8; regi++)
- regcache_raw_supply (current_regcache, regi,
+ regcache_raw_supply (regcache, regi,
FPREG_ADDR (fpregsetp, regi - FP0_REGNUM));
- regcache_raw_supply (current_regcache, M68K_FPC_REGNUM,
- (char *) &fpregsetp->fpcntl[0]);
- regcache_raw_supply (current_regcache, M68K_FPS_REGNUM,
- (char *) &fpregsetp->fpcntl[1]);
- regcache_raw_supply (current_regcache, M68K_FPI_REGNUM,
- (char *) &fpregsetp->fpcntl[2]);
+ regcache_raw_supply (regcache, M68K_FPC_REGNUM, &fpregsetp->fpcntl[0]);
+ regcache_raw_supply (regcache, M68K_FPS_REGNUM, &fpregsetp->fpcntl[1]);
+ regcache_raw_supply (regcache, M68K_FPI_REGNUM, &fpregsetp->fpcntl[2]);
}
/* Fill register REGNO (if it is a floating-point register) in
do this for all registers. */
void
-fill_fpregset (elf_fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache,
+ elf_fpregset_t *fpregsetp, int regno)
{
int i;
/* Fill in the floating-point registers. */
for (i = FP0_REGNUM; i < FP0_REGNUM + 8; i++)
if (regno == -1 || regno == i)
- regcache_raw_collect (current_regcache, i,
+ regcache_raw_collect (regcache, i,
FPREG_ADDR (fpregsetp, i - FP0_REGNUM));
/* Fill in the floating-point control registers. */
for (i = M68K_FPC_REGNUM; i <= M68K_FPI_REGNUM; i++)
if (regno == -1 || regno == i)
- regcache_raw_collect (current_regcache, i,
- (char *) &fpregsetp->fpcntl[i - M68K_FPC_REGNUM]);
+ regcache_raw_collect (regcache, i,
+ &fpregsetp->fpcntl[i - M68K_FPC_REGNUM]);
}
#ifdef HAVE_PTRACE_GETREGS
thier values in GDB's register array. */
static void
-fetch_fpregs (int tid)
+fetch_fpregs (struct regcache *regcache, int tid)
{
elf_fpregset_t fpregs;
if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0)
perror_with_name (_("Couldn't get floating point status"));
- supply_fpregset (&fpregs);
+ supply_fpregset (regcache, (const elf_fpregset_t *) &fpregs);
}
/* Store all valid floating-point registers in GDB's register array
into the process/thread specified by TID. */
static void
-store_fpregs (int tid, int regno)
+store_fpregs (const struct regcache *regcache, int tid, int regno)
{
elf_fpregset_t fpregs;
if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0)
perror_with_name (_("Couldn't get floating point status"));
- fill_fpregset (&fpregs, regno);
+ fill_fpregset (regcache, &fpregs, regno);
if (ptrace (PTRACE_SETFPREGS, tid, 0, (int) &fpregs) < 0)
perror_with_name (_("Couldn't write floating point status"));
#else
-static void fetch_fpregs (int tid) {}
-static void store_fpregs (int tid, int regno) {}
-
-#endif
+static void fetch_fpregs (struct regcache *regcache, int tid) {}
+static void store_fpregs (const struct regcache *regcache, int tid, int regno) {}
#endif
\f
this for all registers (including the floating point and SSE
registers). */
-void
-fetch_inferior_registers (int regno)
+static void
+m68k_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
{
int tid;
GETREGS request isn't available. */
if (! have_ptrace_getregs)
{
- old_fetch_inferior_registers (regno);
+ old_fetch_inferior_registers (regcache, regno);
return;
}
zero. */
if (regno == -1)
{
- fetch_regs (tid);
+ fetch_regs (regcache, tid);
/* The call above might reset `have_ptrace_getregs'. */
if (! have_ptrace_getregs)
{
- old_fetch_inferior_registers (-1);
+ old_fetch_inferior_registers (regcache, -1);
return;
}
- fetch_fpregs (tid);
+ fetch_fpregs (regcache, tid);
return;
}
if (getregs_supplies (regno))
{
- fetch_regs (tid);
+ fetch_regs (regcache, tid);
return;
}
if (getfpregs_supplies (regno))
{
- fetch_fpregs (tid);
+ fetch_fpregs (regcache, tid);
return;
}
/* Store register REGNO back into the child process. If REGNO is -1,
do this for all registers (including the floating point and SSE
registers). */
-void
-store_inferior_registers (int regno)
+static void
+m68k_linux_store_inferior_registers (struct regcache *regcache, int regno)
{
int tid;
SETREGS request isn't available. */
if (! have_ptrace_getregs)
{
- old_store_inferior_registers (regno);
+ old_store_inferior_registers (regcache, regno);
return;
}
store_fpregs can fail, and return zero. */
if (regno == -1)
{
- store_regs (tid, regno);
- store_fpregs (tid, regno);
+ store_regs (regcache, tid, regno);
+ store_fpregs (regcache, tid, regno);
return;
}
if (getregs_supplies (regno))
{
- store_regs (tid, regno);
+ store_regs (regcache, tid, regno);
return;
}
if (getfpregs_supplies (regno))
{
- store_fpregs (tid, regno);
+ store_fpregs (regcache, tid, regno);
return;
}
REG_ADDR isn't used on GNU/Linux. */
static void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
+fetch_core_registers (struct regcache *regcache,
+ char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
elf_gregset_t gregset;
else
{
memcpy (&gregset, core_reg_sect, sizeof (gregset));
- supply_gregset (&gregset);
+ supply_gregset (regcache, (const elf_gregset_t *) &gregset);
}
break;
else
{
memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
- supply_fpregset (&fpregset);
+ supply_fpregset (regcache, (const elf_fpregset_t *) &fpregset);
}
break;
}
\f
-int
-kernel_u_size (void)
-{
- return (sizeof (struct user));
-}
-\f
/* Register that we are able to handle GNU/Linux ELF core file
formats. */
NULL /* next */
};
+void _initialize_m68k_linux_nat (void);
+
void
_initialize_m68k_linux_nat (void)
{
+ struct target_ops *t;
+
+ /* Fill in the generic GNU/Linux methods. */
+ t = linux_target ();
+
+ /* Add our register access methods. */
+ t->to_fetch_registers = m68k_linux_fetch_inferior_registers;
+ t->to_store_registers = m68k_linux_store_inferior_registers;
+
+ /* Register the target. */
+ linux_nat_add_target (t);
+
deprecated_add_core_fns (&linux_elf_core_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff