X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fmips-linux-nat.c;h=2db2969c5fee7190d1257e43cab1c448b8850550;hb=2bd7c093f663139ad9e57ddc748ade12f6bfbe01;hp=7796146ddc8ed287a9aeee026e8fb07058666513;hpb=f973ed9c9fe95754a838acaf31312265b6d9320f;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/mips-linux-nat.c b/gdb/mips-linux-nat.c
index 7796146ddc..2db2969c5f 100644
--- a/gdb/mips-linux-nat.c
+++ b/gdb/mips-linux-nat.c
@@ -1,13 +1,13 @@
/* Native-dependent code for GNU/Linux on MIPS processors.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006
+ Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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,
@@ -16,21 +16,26 @@
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 . */
#include "defs.h"
#include "inferior.h"
#include "mips-tdep.h"
#include "target.h"
+#include "regcache.h"
#include "linux-nat.h"
#include "mips-linux-tdep.h"
+#include "target-descriptions.h"
#include "gdb_proc_service.h"
+#include "gregset.h"
+#include
#include
+#include "features/mips-linux.c"
+#include "features/mips64-linux.c"
+
#ifndef PTRACE_GET_THREAD_AREA
#define PTRACE_GET_THREAD_AREA 25
#endif
@@ -42,48 +47,84 @@ static int have_ptrace_regsets = 1;
/* Saved function pointers to fetch and store a single register using
PTRACE_PEEKUSER and PTRACE_POKEUSER. */
-void (*super_fetch_registers) (int);
-void (*super_store_registers) (int);
+void (*super_fetch_registers) (struct target_ops *, struct regcache *, int);
+void (*super_store_registers) (struct target_ops *, struct regcache *, int);
+
+/* Map gdb internal register number to ptrace ``address''.
+ These ``addresses'' are normally defined in .
-/* Pseudo registers can not be read. ptrace does not provide a way to
- read (or set) MIPS_PS_REGNUM, and there's no point in reading or
- setting MIPS_ZERO_REGNUM. We also can not set BADVADDR, CAUSE, or
- FCRIR via ptrace(). */
+ ptrace does not provide a way to read (or set) MIPS_PS_REGNUM,
+ and there's no point in reading or setting MIPS_ZERO_REGNUM.
+ We also can not set BADVADDR, CAUSE, or FCRIR via ptrace(). */
-int
-mips_linux_cannot_fetch_register (int regno)
+static CORE_ADDR
+mips_linux_register_addr (struct gdbarch *gdbarch, int regno, int store)
{
+ CORE_ADDR regaddr;
+
+ if (regno < 0 || regno >= gdbarch_num_regs (gdbarch))
+ error (_("Bogon register number %d."), regno);
+
if (regno > MIPS_ZERO_REGNUM && regno < MIPS_ZERO_REGNUM + 32)
- return 0;
- else if (regno >= mips_regnum (current_gdbarch)->fp0
- && regno <= mips_regnum (current_gdbarch)->fp0 + 32)
- return 0;
- else if (regno == mips_regnum (current_gdbarch)->lo
- || regno == mips_regnum (current_gdbarch)->hi
- || regno == mips_regnum (current_gdbarch)->badvaddr
- || regno == mips_regnum (current_gdbarch)->cause
- || regno == mips_regnum (current_gdbarch)->pc
- || regno == mips_regnum (current_gdbarch)->fp_control_status
- || regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
- return 0;
+ regaddr = regno;
+ else if ((regno >= mips_regnum (gdbarch)->fp0)
+ && (regno < mips_regnum (gdbarch)->fp0 + 32))
+ regaddr = FPR_BASE + (regno - mips_regnum (gdbarch)->fp0);
+ else if (regno == mips_regnum (gdbarch)->pc)
+ regaddr = PC;
+ else if (regno == mips_regnum (gdbarch)->cause)
+ regaddr = store? (CORE_ADDR) -1 : CAUSE;
+ else if (regno == mips_regnum (gdbarch)->badvaddr)
+ regaddr = store? (CORE_ADDR) -1 : BADVADDR;
+ else if (regno == mips_regnum (gdbarch)->lo)
+ regaddr = MMLO;
+ else if (regno == mips_regnum (gdbarch)->hi)
+ regaddr = MMHI;
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
+ regaddr = FPC_CSR;
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
+ regaddr = store? (CORE_ADDR) -1 : FPC_EIR;
+ else if (mips_linux_restart_reg_p (gdbarch) && regno == MIPS_RESTART_REGNUM)
+ regaddr = 0;
else
- return 1;
+ regaddr = (CORE_ADDR) -1;
+
+ return regaddr;
}
-int
-mips_linux_cannot_store_register (int regno)
+static CORE_ADDR
+mips64_linux_register_addr (struct gdbarch *gdbarch, int regno, int store)
{
+ CORE_ADDR regaddr;
+
+ if (regno < 0 || regno >= gdbarch_num_regs (gdbarch))
+ error (_("Bogon register number %d."), regno);
+
if (regno > MIPS_ZERO_REGNUM && regno < MIPS_ZERO_REGNUM + 32)
- return 0;
- else if (regno >= FP0_REGNUM && regno <= FP0_REGNUM + 32)
- return 0;
- else if (regno == mips_regnum (current_gdbarch)->lo
- || regno == mips_regnum (current_gdbarch)->hi
- || regno == mips_regnum (current_gdbarch)->pc
- || regno == mips_regnum (current_gdbarch)->fp_control_status)
- return 0;
+ regaddr = regno;
+ else if ((regno >= mips_regnum (gdbarch)->fp0)
+ && (regno < mips_regnum (gdbarch)->fp0 + 32))
+ regaddr = MIPS64_FPR_BASE + (regno - gdbarch_fp0_regnum (gdbarch));
+ else if (regno == mips_regnum (gdbarch)->pc)
+ regaddr = MIPS64_PC;
+ else if (regno == mips_regnum (gdbarch)->cause)
+ regaddr = store? (CORE_ADDR) -1 : MIPS64_CAUSE;
+ else if (regno == mips_regnum (gdbarch)->badvaddr)
+ regaddr = store? (CORE_ADDR) -1 : MIPS64_BADVADDR;
+ else if (regno == mips_regnum (gdbarch)->lo)
+ regaddr = MIPS64_MMLO;
+ else if (regno == mips_regnum (gdbarch)->hi)
+ regaddr = MIPS64_MMHI;
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
+ regaddr = MIPS64_FPC_CSR;
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
+ regaddr = store? (CORE_ADDR) -1 : MIPS64_FPC_EIR;
+ else if (mips_linux_restart_reg_p (gdbarch) && regno == MIPS_RESTART_REGNUM)
+ regaddr = 0;
else
- return 1;
+ regaddr = (CORE_ADDR) -1;
+
+ return regaddr;
}
/* Fetch the thread-local storage pointer for libthread_db. */
@@ -103,21 +144,63 @@ ps_get_thread_area (const struct ps_prochandle *ph,
return PS_OK;
}
+/* Wrapper functions. These are only used by libthread_db. */
+
+void
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
+{
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
+ mips_supply_gregset (regcache, (const mips_elf_gregset_t *) gregsetp);
+ else
+ mips64_supply_gregset (regcache, (const mips64_elf_gregset_t *) gregsetp);
+}
+
+void
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
+{
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
+ mips_fill_gregset (regcache, (mips_elf_gregset_t *) gregsetp, regno);
+ else
+ mips64_fill_gregset (regcache, (mips64_elf_gregset_t *) gregsetp, regno);
+}
+
+void
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
+{
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
+ mips_supply_fpregset (regcache, (const mips_elf_fpregset_t *) fpregsetp);
+ else
+ mips64_supply_fpregset (regcache, (const mips64_elf_fpregset_t *) fpregsetp);
+}
+
+void
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
+{
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
+ mips_fill_fpregset (regcache, (mips_elf_fpregset_t *) fpregsetp, regno);
+ else
+ mips64_fill_fpregset (regcache, (mips64_elf_fpregset_t *) fpregsetp, regno);
+}
+
+
/* Fetch REGNO (or all registers if REGNO == -1) from the target
using PTRACE_GETREGS et al. */
static void
-mips64_linux_regsets_fetch_registers (int regno)
+mips64_linux_regsets_fetch_registers (struct regcache *regcache, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int is_fp;
int tid;
- if (regno >= mips_regnum (current_gdbarch)->fp0
- && regno <= mips_regnum (current_gdbarch)->fp0 + 32)
+ if (regno >= mips_regnum (gdbarch)->fp0
+ && regno <= mips_regnum (gdbarch)->fp0 + 32)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
is_fp = 1;
else
is_fp = 0;
@@ -140,7 +223,8 @@ mips64_linux_regsets_fetch_registers (int regno)
perror_with_name (_("Couldn't get registers"));
}
- mips64_supply_gregset (®s);
+ mips64_supply_gregset (regcache,
+ (const mips64_elf_gregset_t *) ®s);
}
if (regno == -1 || is_fp)
@@ -158,7 +242,8 @@ mips64_linux_regsets_fetch_registers (int regno)
perror_with_name (_("Couldn't get FP registers"));
}
- mips64_supply_fpregset (&fp_regs);
+ mips64_supply_fpregset (regcache,
+ (const mips64_elf_fpregset_t *) &fp_regs);
}
}
@@ -166,17 +251,18 @@ mips64_linux_regsets_fetch_registers (int regno)
using PTRACE_SETREGS et al. */
static void
-mips64_linux_regsets_store_registers (int regno)
+mips64_linux_regsets_store_registers (const struct regcache *regcache, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
int is_fp;
int tid;
- if (regno >= mips_regnum (current_gdbarch)->fp0
- && regno <= mips_regnum (current_gdbarch)->fp0 + 32)
+ if (regno >= mips_regnum (gdbarch)->fp0
+ && regno <= mips_regnum (gdbarch)->fp0 + 32)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
is_fp = 1;
else
is_fp = 0;
@@ -192,7 +278,7 @@ mips64_linux_regsets_store_registers (int regno)
if (ptrace (PTRACE_GETREGS, tid, 0L, (PTRACE_TYPE_ARG3) ®s) == -1)
perror_with_name (_("Couldn't get registers"));
- mips64_fill_gregset (®s, regno);
+ mips64_fill_gregset (regcache, ®s, regno);
if (ptrace (PTRACE_SETREGS, tid, 0L, (PTRACE_TYPE_ARG3) ®s) == -1)
perror_with_name (_("Couldn't set registers"));
@@ -206,7 +292,7 @@ mips64_linux_regsets_store_registers (int regno)
(PTRACE_TYPE_ARG3) &fp_regs) == -1)
perror_with_name (_("Couldn't get FP registers"));
- mips64_fill_fpregset (&fp_regs, regno);
+ mips64_fill_fpregset (regcache, &fp_regs, regno);
if (ptrace (PTRACE_SETFPREGS, tid, 0L,
(PTRACE_TYPE_ARG3) &fp_regs) == -1)
@@ -218,32 +304,57 @@ mips64_linux_regsets_store_registers (int regno)
using any working method. */
static void
-mips64_linux_fetch_registers (int regnum)
+mips64_linux_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
/* Unless we already know that PTRACE_GETREGS does not work, try it. */
if (have_ptrace_regsets)
- mips64_linux_regsets_fetch_registers (regnum);
+ mips64_linux_regsets_fetch_registers (regcache, regnum);
/* If we know, or just found out, that PTRACE_GETREGS does not work, fall
back to PTRACE_PEEKUSER. */
if (!have_ptrace_regsets)
- super_fetch_registers (regnum);
+ super_fetch_registers (ops, regcache, regnum);
}
/* Store REGNO (or all registers if REGNO == -1) to the target
using any working method. */
static void
-mips64_linux_store_registers (int regnum)
+mips64_linux_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
/* Unless we already know that PTRACE_GETREGS does not work, try it. */
if (have_ptrace_regsets)
- mips64_linux_regsets_store_registers (regnum);
+ mips64_linux_regsets_store_registers (regcache, regnum);
/* If we know, or just found out, that PTRACE_GETREGS does not work, fall
back to PTRACE_PEEKUSER. */
if (!have_ptrace_regsets)
- super_store_registers (regnum);
+ super_store_registers (ops, regcache, regnum);
+}
+
+/* Return the address in the core dump or inferior of register
+ REGNO. */
+
+static CORE_ADDR
+mips_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p)
+{
+ if (mips_abi_regsize (gdbarch) == 8)
+ return mips64_linux_register_addr (gdbarch, regno, store_p);
+ else
+ return mips_linux_register_addr (gdbarch, regno, store_p);
+}
+
+static const struct target_desc *
+mips_linux_read_description (struct target_ops *ops)
+{
+ /* Report that target registers are a size we know for sure
+ that we can get from ptrace. */
+ if (_MIPS_SIM == _ABIO32)
+ return tdesc_mips_linux;
+ else
+ return tdesc_mips64_linux;
}
void _initialize_mips_linux_nat (void);
@@ -251,7 +362,7 @@ void _initialize_mips_linux_nat (void);
void
_initialize_mips_linux_nat (void)
{
- struct target_ops *t = linux_target ();
+ struct target_ops *t = linux_trad_target (mips_linux_register_u_offset);
super_fetch_registers = t->to_fetch_registers;
super_store_registers = t->to_store_registers;
@@ -259,5 +370,11 @@ _initialize_mips_linux_nat (void)
t->to_fetch_registers = mips64_linux_fetch_registers;
t->to_store_registers = mips64_linux_store_registers;
+ t->to_read_description = mips_linux_read_description;
+
linux_nat_add_target (t);
+
+ /* Initialize the standard target descriptions. */
+ initialize_tdesc_mips_linux ();
+ initialize_tdesc_mips64_linux ();
}