/* 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
+ 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 "inferior.h"
#include "language.h"
#include "gdbcore.h"
+#include "gdb_string.h"
#include "regcache.h"
+#include "target.h"
+#include "linux-nat.h"
-#ifdef USG
-#include <sys/types.h>
-#endif
+#include "m68k-tdep.h"
#include <sys/param.h>
#include <sys/dir.h>
#include "target.h"
\f
-
-/* This table must line up with REGISTER_NAMES in tm-m68k.h */
+/* This table must line up with 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 <= FPI_REGNUM;
+ return FP0_REGNUM <= regno && regno <= M68K_FPI_REGNUM;
}
/* Does the current host support the GETREGS request? */
/* 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[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);
+ memset (buf, '\0', register_size (current_gdbarch, regno)); /* Supply zeroes */
+ regcache_raw_supply (current_regcache, regno, buf);
return;
}
/* Overload thread id onto process id */
- if ((tid = TIDGET (inferior_ptid)) == 0)
+ 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);
- 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_XFER_TYPE *) &buf[i] = ptrace (PT_READ_U, tid,
+ (PTRACE_ARG3_TYPE) 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);
}
/* 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
+static void
old_fetch_inferior_registers (int regno)
{
if (regno >= 0)
/* 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))
{
}
/* Overload thread id onto process id */
- if ((tid = TIDGET (inferior_ptid)) == 0)
+ 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);
/* 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,
If REGNO is negative, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
-void
+static void
old_store_inferior_registers (int regno)
{
if (regno >= 0)
elf_greg_t *regp = (elf_greg_t *) gregsetp;
int regi;
- for (regi = D0_REGNUM; regi <= SP_REGNUM; regi++)
- supply_register (regi, (char *) ®p[regmap[regi]]);
- supply_register (PS_REGNUM, (char *) ®p[PT_SR]);
- supply_register (PC_REGNUM, (char *) ®p[PT_PC]);
+ 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]);
}
/* Fill register REGNO (if it is a general-purpose register) in
int i;
for (i = 0; i < NUM_GREGS; i++)
- if ((regno == -1 || regno == i))
- regcache_collect (i, regp + regmap[i]);
+ if (regno == -1 || regno == i)
+ regcache_raw_collect (current_regcache, i, regp + regmap[i]);
}
#ifdef HAVE_PTRACE_GETREGS
return;
}
- perror_with_name ("Couldn't get registers");
+ perror_with_name (_("Couldn't get registers"));
}
supply_gregset (®s);
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (int) ®s) < 0)
- perror_with_name ("Couldn't get registers");
+ perror_with_name (_("Couldn't get registers"));
fill_gregset (®s, regno);
if (ptrace (PTRACE_SETREGS, tid, 0, (int) ®s) < 0)
- perror_with_name ("Couldn't write registers");
+ perror_with_name (_("Couldn't write registers"));
}
#else
{
int regi;
- for (regi = FP0_REGNUM; regi < FPC_REGNUM; regi++)
- supply_register (regi, FPREG_ADDR (fpregsetp, regi - FP0_REGNUM));
- supply_register (FPC_REGNUM, (char *) &fpregsetp->fpcntl[0]);
- supply_register (FPS_REGNUM, (char *) &fpregsetp->fpcntl[1]);
- supply_register (FPI_REGNUM, (char *) &fpregsetp->fpcntl[2]);
+ 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]);
}
/* Fill register REGNO (if it is a floating-point register) in
/* Fill in the floating-point registers. */
for (i = FP0_REGNUM; i < FP0_REGNUM + 8; i++)
if (regno == -1 || regno == i)
- regcache_collect (regno, FPREG_ADDR (fpregsetp, regno - FP0_REGNUM));
+ regcache_raw_collect (current_regcache, i,
+ FPREG_ADDR (fpregsetp, i - FP0_REGNUM));
/* Fill in the floating-point control registers. */
- for (i = FPC_REGNUM; i <= FPI_REGNUM; i++)
+ for (i = M68K_FPC_REGNUM; i <= M68K_FPI_REGNUM; i++)
if (regno == -1 || regno == i)
- regcache_collect (regno, (char *) &fpregsetp->fpcntl[regno - FPC_REGNUM]);
+ regcache_raw_collect (current_regcache, i,
+ (char *) &fpregsetp->fpcntl[i - M68K_FPC_REGNUM]);
}
#ifdef HAVE_PTRACE_GETREGS
elf_fpregset_t fpregs;
if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0)
- perror_with_name ("Couldn't get floating point status");
+ perror_with_name (_("Couldn't get floating point status"));
supply_fpregset (&fpregs);
}
elf_fpregset_t fpregs;
if (ptrace (PTRACE_GETFPREGS, tid, 0, (int) &fpregs) < 0)
- perror_with_name ("Couldn't get floating point status");
+ perror_with_name (_("Couldn't get floating point status"));
fill_fpregset (&fpregs, regno);
if (ptrace (PTRACE_SETFPREGS, tid, 0, (int) &fpregs) < 0)
- perror_with_name ("Couldn't write floating point status");
+ perror_with_name (_("Couldn't write floating point status"));
}
#else
this for all registers (including the floating point and SSE
registers). */
-void
-fetch_inferior_registers (int regno)
+static void
+m68k_linux_fetch_inferior_registers (int regno)
{
int tid;
}
/* GNU/Linux LWP ID's are process ID's. */
- if ((tid = TIDGET (inferior_ptid)) == 0)
+ tid = TIDGET (inferior_ptid);
+ if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_GETFPXREGS request whenever possible, since it
}
internal_error (__FILE__, __LINE__,
- "Got request for bad register number %d.", regno);
+ _("Got request for bad register number %d."), regno);
}
/* 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 (int regno)
{
int tid;
}
/* GNU/Linux LWP ID's are process ID's. */
- if ((tid = TIDGET (inferior_ptid)) == 0)
+ tid = TIDGET (inferior_ptid);
+ if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_SETFPREGS requests whenever possible, since it
}
internal_error (__FILE__, __LINE__,
- "Got request to store bad register number %d.", regno);
+ _("Got request to store bad register number %d."), regno);
}
\f
/* Interpreting register set info found in core files. */
{
case 0:
if (core_reg_size != sizeof (gregset))
- warning ("Wrong size gregset in core file.");
+ warning (_("Wrong size gregset in core file."));
else
{
memcpy (&gregset, core_reg_sect, sizeof (gregset));
case 2:
if (core_reg_size != sizeof (fpregset))
- warning ("Wrong size fpregset in core file.");
+ warning (_("Wrong size fpregset in core file."));
else
{
memcpy (&fpregset, core_reg_sect, sizeof (fpregset));
return (sizeof (struct user));
}
\f
-/* Check whether insn1 and insn2 are parts of a signal trampoline. */
-
-#define IS_SIGTRAMP(insn1, insn2) \
- (/* addaw #20,sp; moveq #119,d0; trap #0 */ \
- (insn1 == 0xdefc0014 && insn2 == 0x70774e40) \
- /* moveq #119,d0; trap #0 */ \
- || insn1 == 0x70774e40)
-
-#define IS_RT_SIGTRAMP(insn1, insn2) \
- (/* movel #173,d0; trap #0 */ \
- (insn1 == 0x203c0000 && insn2 == 0x00ad4e40) \
- /* moveq #82,d0; notb d0; trap #0 */ \
- || (insn1 == 0x70524600 && (insn2 >> 16) == 0x4e40))
-
-/* Return non-zero if PC points into the signal trampoline. For the sake
- of m68k_linux_frame_saved_pc we also distinguish between non-RT and RT
- signal trampolines. */
-
-int
-m68k_linux_in_sigtramp (CORE_ADDR pc)
-{
- CORE_ADDR sp;
- char buf[12];
- unsigned long insn0, insn1, insn2;
-
- if (read_memory_nobpt (pc - 4, buf, sizeof (buf)))
- return 0;
- insn1 = extract_unsigned_integer (buf + 4, 4);
- insn2 = extract_unsigned_integer (buf + 8, 4);
- if (IS_SIGTRAMP (insn1, insn2))
- return 1;
- if (IS_RT_SIGTRAMP (insn1, insn2))
- return 2;
-
- insn0 = extract_unsigned_integer (buf, 4);
- if (IS_SIGTRAMP (insn0, insn1))
- return 1;
- if (IS_RT_SIGTRAMP (insn0, insn1))
- return 2;
-
- insn0 = (insn0 << 16) | (insn1 >> 16);
- insn1 = (insn1 << 16) | (insn2 >> 16);
- if (IS_SIGTRAMP (insn0, insn1))
- return 1;
- if (IS_RT_SIGTRAMP (insn0, insn1))
- return 2;
-
- return 0;
-}
-
-/* Offset to saved PC in sigcontext, from <asm/sigcontext.h>. */
-#define SIGCONTEXT_PC_OFFSET 26
-
-/* Offset to saved PC in ucontext, from <asm/ucontext.h>. */
-#define UCONTEXT_PC_OFFSET 88
-
-/* Get saved user PC for sigtramp from sigcontext or ucontext. */
-
-static CORE_ADDR
-m68k_linux_sigtramp_saved_pc (struct frame_info *frame)
-{
- CORE_ADDR sigcontext_addr;
- char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
- int ptrbytes = TARGET_PTR_BIT / TARGET_CHAR_BIT;
- int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT;
-
- /* Get sigcontext address, it is the third parameter on the stack. */
- if (frame->next)
- sigcontext_addr = read_memory_integer (FRAME_ARGS_ADDRESS (frame->next)
- + FRAME_ARGS_SKIP
- + sigcontext_offs,
- ptrbytes);
- else
- sigcontext_addr = read_memory_integer (read_register (SP_REGNUM)
- + sigcontext_offs,
- ptrbytes);
-
- /* Don't cause a memory_error when accessing sigcontext in case the
- stack layout has changed or the stack is corrupt. */
- if (m68k_linux_in_sigtramp (frame->pc) == 2)
- target_read_memory (sigcontext_addr + UCONTEXT_PC_OFFSET, buf, ptrbytes);
- else
- target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes);
- return extract_unsigned_integer (buf, ptrbytes);
-}
-
-/* Return the saved program counter for FRAME. */
-
-CORE_ADDR
-m68k_linux_frame_saved_pc (struct frame_info *frame)
-{
- if (frame->signal_handler_caller)
- return m68k_linux_sigtramp_saved_pc (frame);
-
- return read_memory_integer (frame->frame + 4, 4);
-}
-\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 ()
+_initialize_m68k_linux_nat (void)
{
- add_core_fns (&linux_elf_core_fns);
+ 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