/* Motorola m68k native support for GNU/Linux.
- Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+ 2008 Free Software Foundation, Inc.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "frame.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". */
+/* This table must line up with gdbarch_register_name in "m68k-tdep.c". */
static const int regmap[] =
{
PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7,
int
getfpregs_supplies (int regno)
{
- return FP0_REGNUM <= regno && regno <= M68K_FPI_REGNUM;
+ return M68K_FP0_REGNUM <= regno && regno <= M68K_FPI_REGNUM;
}
/* Does the current host support the GETREGS request? */
\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
/* Fetch one register. */
static void
-fetch_register (int regno)
+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 */
int i;
- unsigned int offset; /* Offset of registers within the u area. */
char buf[MAX_REGISTER_SIZE];
int tid;
- if (CANNOT_FETCH_REGISTER (regno))
+ if (gdbarch_cannot_fetch_register (gdbarch, regno))
{
- memset (buf, '\0', register_size (current_gdbarch, regno)); /* Supply zeroes */
- regcache_raw_supply (current_regcache, regno, buf);
+ memset (buf, '\0', register_size (gdbarch, regno)); /* Supply zeroes */
+ 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);
- for (i = 0; i < register_size (current_gdbarch, regno);
+ regaddr = 4 * regmap[regno];
+ for (i = 0; i < register_size (gdbarch, regno);
i += sizeof (PTRACE_TYPE_RET))
{
errno = 0;
if (errno != 0)
{
sprintf (mess, "reading register %s (#%d)",
- REGISTER_NAME (regno), regno);
+ gdbarch_register_name (gdbarch, regno), regno);
perror_with_name (mess);
}
}
- regcache_raw_supply (current_regcache, regno, buf);
+ regcache_raw_supply (regcache, regno, buf);
}
/* Fetch register values from the inferior.
Otherwise, REGNO specifies which register (so we can save time). */
static void
-old_fetch_inferior_registers (int regno)
+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++)
+ for (regno = 0;
+ regno < gdbarch_num_regs (get_regcache_arch (regcache));
+ 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)
{
+ 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 */
int i;
- unsigned int offset; /* Offset of registers within the u area. */
int tid;
char buf[MAX_REGISTER_SIZE];
- if (CANNOT_STORE_REGISTER (regno))
- {
- return;
- }
+ if (gdbarch_cannot_store_register (gdbarch, regno))
+ return;
/* Overload thread id onto process id */
tid = TIDGET (inferior_ptid);
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);
+ for (i = 0; i < register_size (gdbarch, regno);
i += sizeof (PTRACE_TYPE_RET))
{
errno = 0;
if (errno != 0)
{
sprintf (mess, "writing register %s (#%d)",
- REGISTER_NAME (regno), regno);
+ gdbarch_register_name (gdbarch, regno), regno);
perror_with_name (mess);
}
}
Otherwise, REGNO specifies which register (so we can save time). */
static void
-old_store_inferior_registers (int regno)
+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++)
+ for (regno = 0;
+ regno < gdbarch_num_regs (get_regcache_arch (regcache));
+ 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;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ 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]);
+ for (regi = M68K_D0_REGNUM;
+ regi <= gdbarch_sp_regnum (gdbarch);
+ regi++)
+ regcache_raw_supply (regcache, regi, ®p[regmap[regi]]);
+ regcache_raw_supply (regcache, gdbarch_ps_regnum (gdbarch),
+ ®p[PT_SR]);
+ regcache_raw_supply (regcache,
+ gdbarch_pc_regnum (gdbarch), ®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)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int regi;
- for (regi = FP0_REGNUM; regi < FP0_REGNUM + 8; regi++)
- regcache_raw_supply (current_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]);
+ for (regi = gdbarch_fp0_regnum (gdbarch);
+ regi < gdbarch_fp0_regnum (gdbarch) + 8; regi++)
+ regcache_raw_supply (regcache, regi,
+ FPREG_ADDR (fpregsetp,
+ regi - gdbarch_fp0_regnum (gdbarch)));
+ 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)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int i;
/* Fill in the floating-point registers. */
- for (i = FP0_REGNUM; i < FP0_REGNUM + 8; i++)
+ for (i = gdbarch_fp0_regnum (gdbarch);
+ i < gdbarch_fp0_regnum (gdbarch) + 8; i++)
if (regno == -1 || regno == i)
- regcache_raw_collect (current_regcache, i,
- FPREG_ADDR (fpregsetp, i - FP0_REGNUM));
+ regcache_raw_collect (regcache, i,
+ FPREG_ADDR (fpregsetp,
+ i - gdbarch_fp0_regnum (gdbarch)));
/* 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
registers). */
static void
-m68k_linux_fetch_inferior_registers (int regno)
+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;
}
do this for all registers (including the floating point and SSE
registers). */
static void
-m68k_linux_store_inferior_registers (int regno)
+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. */