/* GNU/Linux on ARM native support.
- Copyright 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007
+ 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "gdb_string.h"
+#include "regcache.h"
+#include "target.h"
+#include "linux-nat.h"
+#include "target-descriptions.h"
+
+#include "arm-tdep.h"
+#include "arm-linux-tdep.h"
#include <sys/user.h>
#include <sys/ptrace.h>
#include <sys/utsname.h>
+#include <sys/procfs.h>
-extern int arm_apcs_32;
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
+/* Defines ps_err_e, struct ps_prochandle. */
+#include "gdb_proc_service.h"
+
+#include "features/arm-with-iwmmxt.c"
+
+#ifndef PTRACE_GET_THREAD_AREA
+#define PTRACE_GET_THREAD_AREA 22
+#endif
-#define typeNone 0x00
-#define typeSingle 0x01
-#define typeDouble 0x02
-#define typeExtended 0x03
-#define FPWORDS 28
-#define CPSR_REGNUM 16
-
-typedef union tagFPREG
- {
- unsigned int fSingle;
- unsigned int fDouble[2];
- unsigned int fExtended[3];
- }
-FPREG;
-
-typedef struct tagFPA11
- {
- FPREG fpreg[8]; /* 8 floating point registers */
- unsigned int fpsr; /* floating point status register */
- unsigned int fpcr; /* floating point control register */
- unsigned char fType[8]; /* type of floating point value held in
- floating point registers. */
- int initflag; /* NWFPE initialization flag. */
- }
-FPA11;
+#ifndef PTRACE_GETWMMXREGS
+#define PTRACE_GETWMMXREGS 18
+#define PTRACE_SETWMMXREGS 19
+#endif
+
+/* A flag for whether the WMMX registers are available. */
+static int arm_linux_has_wmmx_registers;
+
+extern int arm_apcs_32;
/* The following variables are used to determine the version of the
- underlying Linux operating system. Examples:
+ underlying GNU/Linux operating system. Examples:
- Linux 2.0.35 Linux 2.2.12
+ GNU/Linux 2.0.35 GNU/Linux 2.2.12
os_version = 0x00020023 os_version = 0x0002020c
os_major = 2 os_major = 2
os_minor = 0 os_minor = 2
static unsigned int os_version, os_major, os_minor, os_release;
-static void
-fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
+/* On GNU/Linux, threads are implemented as pseudo-processes, in which
+ case we may be tracing more than one process at a time. In that
+ case, inferior_ptid will contain the main process ID and the
+ individual thread (process) ID. get_thread_id () is used to get
+ the thread id if it's available, and the process id otherwise. */
- mem[0] = fpa11->fpreg[fn].fSingle;
- mem[1] = 0;
- mem[2] = 0;
- supply_register (F0_REGNUM + fn, (char *) &mem[0]);
+int
+get_thread_id (ptid_t ptid)
+{
+ int tid = TIDGET (ptid);
+ if (0 == tid)
+ tid = PIDGET (ptid);
+ return tid;
}
+#define GET_THREAD_ID(PTID) get_thread_id (PTID)
+
+/* Get the value of a particular register from the floating point
+ state of the process and store it into regcache. */
static void
-fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11)
+fetch_fpregister (struct regcache *regcache, int regno)
{
- unsigned int mem[3];
+ int ret, tid;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ /* Read the floating point state. */
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch floating point register."));
+ return;
+ }
+
+ /* Fetch fpsr. */
+ if (ARM_FPS_REGNUM == regno)
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
- mem[0] = fpa11->fpreg[fn].fDouble[1];
- mem[1] = fpa11->fpreg[fn].fDouble[0];
- mem[2] = 0;
- supply_register (F0_REGNUM + fn, (char *) &mem[0]);
+ /* Fetch the floating point register. */
+ if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
+ supply_nwfpe_register (regcache, regno, fp);
}
+/* Get the whole floating point state of the process and store it
+ into regcache. */
+
static void
-fetch_nwfpe_none (unsigned int fn)
+fetch_fpregs (struct regcache *regcache)
{
- unsigned int mem[3] =
- {0, 0, 0};
+ int ret, regno, tid;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ /* Read the floating point state. */
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch the floating point registers."));
+ return;
+ }
+
+ /* Fetch fpsr. */
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
- supply_register (F0_REGNUM + fn, (char *) &mem[0]);
+ /* Fetch the floating point registers. */
+ for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
+ supply_nwfpe_register (regcache, regno, fp);
}
+/* Save a particular register into the floating point state of the
+ process using the contents from regcache. */
+
static void
-fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
+store_fpregister (const struct regcache *regcache, int regno)
{
- unsigned int mem[3];
+ int ret, tid;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ /* Read the floating point state. */
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch the floating point registers."));
+ return;
+ }
+
+ /* Store fpsr. */
+ if (ARM_FPS_REGNUM == regno && regcache_valid_p (regcache, ARM_FPS_REGNUM))
+ regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
- mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */
- mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */
- mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */
- supply_register (F0_REGNUM + fn, (char *) &mem[0]);
+ /* Store the floating point register. */
+ if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
+ collect_nwfpe_register (regcache, regno, fp);
+
+ ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
+ if (ret < 0)
+ {
+ warning (_("Unable to store floating point register."));
+ return;
+ }
}
+/* Save the whole floating point state of the process using
+ the contents from regcache. */
+
static void
-store_nwfpe_single (unsigned int fn, FPA11 * fpa11)
+store_fpregs (const struct regcache *regcache)
{
- unsigned int mem[3];
+ int ret, regno, tid;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ /* Read the floating point state. */
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch the floating point registers."));
+ return;
+ }
+
+ /* Store fpsr. */
+ if (regcache_valid_p (regcache, ARM_FPS_REGNUM))
+ regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
- read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
- fpa11->fpreg[fn].fSingle = mem[0];
- fpa11->fType[fn] = typeSingle;
+ /* Store the floating point registers. */
+ for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
+ if (regcache_valid_p (regcache, regno))
+ collect_nwfpe_register (regcache, regno, fp);
+
+ ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
+ if (ret < 0)
+ {
+ warning (_("Unable to store floating point registers."));
+ return;
+ }
}
+/* Fetch a general register of the process and store into
+ regcache. */
+
static void
-store_nwfpe_double (unsigned int fn, FPA11 * fpa11)
+fetch_register (struct regcache *regcache, int regno)
{
- unsigned int mem[3];
+ int ret, tid;
+ elf_gregset_t regs;
- read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
- fpa11->fpreg[fn].fDouble[1] = mem[0];
- fpa11->fpreg[fn].fDouble[0] = mem[1];
- fpa11->fType[fn] = typeDouble;
-}
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch general register."));
+ return;
+ }
-void
-store_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
+ if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM)
+ regcache_raw_supply (regcache, regno, (char *) ®s[regno]);
- read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
- fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */
- fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */
- fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */
- fpa11->fType[fn] = typeDouble;
+ if (ARM_PS_REGNUM == regno)
+ {
+ if (arm_apcs_32)
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_CPSR_REGNUM]);
+ else
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
+ }
+
+ if (ARM_PC_REGNUM == regno)
+ {
+ regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove
+ (get_regcache_arch (regcache),
+ regs[ARM_PC_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PC_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
+ }
}
-/* Get the whole floating point state of the process and store the
- floating point stack into registers[]. */
+/* Fetch all general registers of the process and store into
+ regcache. */
static void
-fetch_fpregs (void)
+fetch_regs (struct regcache *regcache)
{
- int ret, regno;
- FPA11 fp;
+ int ret, regno, tid;
+ elf_gregset_t regs;
- /* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, inferior_pid, 0, &fp);
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
if (ret < 0)
{
- warning ("Unable to fetch the floating point state.");
+ warning (_("Unable to fetch general registers."));
return;
}
- /* Fetch fpsr. */
- supply_register (FPS_REGNUM, (char *) &fp.fpsr);
+ for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
+ regcache_raw_supply (regcache, regno, (char *) ®s[regno]);
- /* Fetch the floating point registers. */
- for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
- {
- int fn = regno - F0_REGNUM;
+ if (arm_apcs_32)
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_CPSR_REGNUM]);
+ else
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
+
+ regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove
+ (get_regcache_arch (regcache), regs[ARM_PC_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PC_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
+}
- switch (fp.fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, &fp);
- break;
+/* Store all general registers of the process from the values in
+ regcache. */
- case typeDouble:
- fetch_nwfpe_double (fn, &fp);
- break;
+static void
+store_register (const struct regcache *regcache, int regno)
+{
+ int ret, tid;
+ elf_gregset_t regs;
+
+ if (!regcache_valid_p (regcache, regno))
+ return;
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ /* Get the general registers from the process. */
+ ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch general registers."));
+ return;
+ }
- case typeExtended:
- fetch_nwfpe_extended (fn, &fp);
- break;
+ if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
+ regcache_raw_collect (regcache, regno, (char *) ®s[regno]);
+ else if (arm_apcs_32 && regno == ARM_PS_REGNUM)
+ regcache_raw_collect (regcache, regno,
+ (char *) ®s[ARM_CPSR_REGNUM]);
+ else if (!arm_apcs_32 && regno == ARM_PS_REGNUM)
+ regcache_raw_collect (regcache, ARM_PC_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
- default:
- fetch_nwfpe_none (fn);
- }
+ ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
+ if (ret < 0)
+ {
+ warning (_("Unable to store general register."));
+ return;
}
}
-/* Save the whole floating point state of the process using
- the contents from registers[]. */
-
static void
-store_fpregs (void)
+store_regs (const struct regcache *regcache)
{
- int ret, regno;
- FPA11 fp;
-
- /* Store fpsr. */
- if (register_valid[FPS_REGNUM])
- read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);
+ int ret, regno, tid;
+ elf_gregset_t regs;
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ /* Fetch the general registers. */
+ ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
+ if (ret < 0)
+ {
+ warning (_("Unable to fetch general registers."));
+ return;
+ }
- /* Store the floating point registers. */
- for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
+ for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
{
- if (register_valid[regno])
- {
- unsigned int fn = regno - F0_REGNUM;
- switch (fp.fType[fn])
- {
- case typeSingle:
- store_nwfpe_single (fn, &fp);
- break;
-
- case typeDouble:
- store_nwfpe_double (fn, &fp);
- break;
-
- case typeExtended:
- store_nwfpe_extended (fn, &fp);
- break;
- }
- }
+ if (regcache_valid_p (regcache, regno))
+ regcache_raw_collect (regcache, regno, (char *) ®s[regno]);
}
- ret = ptrace (PTRACE_SETFPREGS, inferior_pid, 0, &fp);
+ if (arm_apcs_32 && regcache_valid_p (regcache, ARM_PS_REGNUM))
+ regcache_raw_collect (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_CPSR_REGNUM]);
+
+ ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
+
if (ret < 0)
{
- warning ("Unable to store floating point state.");
+ warning (_("Unable to store general registers."));
return;
}
}
-/* Fetch all general registers of the process and store into
- registers[]. */
+/* Fetch all WMMX registers of the process and store into
+ regcache. */
+
+#define IWMMXT_REGS_SIZE (16 * 8 + 6 * 4)
static void
-fetch_regs (void)
+fetch_wmmx_regs (struct regcache *regcache)
{
- int ret, regno;
- struct pt_regs regs;
+ char regbuf[IWMMXT_REGS_SIZE];
+ int ret, regno, tid;
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
- ret = ptrace (PTRACE_GETREGS, inferior_pid, 0, ®s);
+ ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
{
- warning ("Unable to fetch general registers.");
+ warning (_("Unable to fetch WMMX registers."));
return;
}
- for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)
- supply_register (regno, (char *) ®s.uregs[regno]);
+ for (regno = 0; regno < 16; regno++)
+ regcache_raw_supply (regcache, regno + ARM_WR0_REGNUM,
+ ®buf[regno * 8]);
- if (arm_apcs_32)
- supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]);
- else
- supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]);
+ for (regno = 0; regno < 2; regno++)
+ regcache_raw_supply (regcache, regno + ARM_WCSSF_REGNUM,
+ ®buf[16 * 8 + regno * 4]);
- regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);
- supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]);
+ for (regno = 0; regno < 4; regno++)
+ regcache_raw_supply (regcache, regno + ARM_WCGR0_REGNUM,
+ ®buf[16 * 8 + 2 * 4 + regno * 4]);
}
-/* Store all general registers of the process from the values in
- registers[]. */
-
static void
-store_regs (void)
+store_wmmx_regs (const struct regcache *regcache)
{
- int ret, regno;
- struct pt_regs regs;
+ char regbuf[IWMMXT_REGS_SIZE];
+ int ret, regno, tid;
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
- ret = ptrace (PTRACE_GETREGS, inferior_pid, 0, ®s);
+ ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
{
- warning ("Unable to fetch general registers.");
+ warning (_("Unable to fetch WMMX registers."));
return;
}
- for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++)
- {
- if (register_valid[regno])
- read_register_gen (regno, (char *) ®s.uregs[regno]);
- }
+ for (regno = 0; regno < 16; regno++)
+ if (regcache_valid_p (regcache, regno + ARM_WR0_REGNUM))
+ regcache_raw_collect (regcache, regno + ARM_WR0_REGNUM,
+ ®buf[regno * 8]);
+
+ for (regno = 0; regno < 2; regno++)
+ if (regcache_valid_p (regcache, regno + ARM_WCSSF_REGNUM))
+ regcache_raw_collect (regcache, regno + ARM_WCSSF_REGNUM,
+ ®buf[16 * 8 + regno * 4]);
- ret = ptrace (PTRACE_SETREGS, inferior_pid, 0, ®s);
+ for (regno = 0; regno < 4; regno++)
+ if (regcache_valid_p (regcache, regno + ARM_WCGR0_REGNUM))
+ regcache_raw_collect (regcache, regno + ARM_WCGR0_REGNUM,
+ ®buf[16 * 8 + 2 * 4 + regno * 4]);
+
+ ret = ptrace (PTRACE_SETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
{
- warning ("Unable to store general registers.");
+ warning (_("Unable to store WMMX registers."));
return;
}
}
regno == -1, otherwise fetch all general registers or all floating
point registers depending upon the value of regno. */
-void
-fetch_inferior_registers (int regno)
+static void
+arm_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
{
- if ((regno < F0_REGNUM) || (regno > FPS_REGNUM))
- fetch_regs ();
-
- if (((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) || (regno == -1))
- fetch_fpregs ();
+ if (-1 == regno)
+ {
+ fetch_regs (regcache);
+ fetch_fpregs (regcache);
+ if (arm_linux_has_wmmx_registers)
+ fetch_wmmx_regs (regcache);
+ }
+ else
+ {
+ if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM)
+ fetch_register (regcache, regno);
+ else if (regno >= ARM_F0_REGNUM && regno <= ARM_FPS_REGNUM)
+ fetch_fpregister (regcache, regno);
+ else if (arm_linux_has_wmmx_registers
+ && regno >= ARM_WR0_REGNUM && regno <= ARM_WCGR7_REGNUM)
+ fetch_wmmx_regs (regcache);
+ }
}
/* Store registers back into the inferior. Store all registers if
regno == -1, otherwise store all general registers or all floating
point registers depending upon the value of regno. */
+static void
+arm_linux_store_inferior_registers (struct regcache *regcache, int regno)
+{
+ if (-1 == regno)
+ {
+ store_regs (regcache);
+ store_fpregs (regcache);
+ if (arm_linux_has_wmmx_registers)
+ store_wmmx_regs (regcache);
+ }
+ else
+ {
+ if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM)
+ store_register (regcache, regno);
+ else if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_FPS_REGNUM))
+ store_fpregister (regcache, regno);
+ else if (arm_linux_has_wmmx_registers
+ && regno >= ARM_WR0_REGNUM && regno <= ARM_WCGR7_REGNUM)
+ store_wmmx_regs (regcache);
+ }
+}
+
+/* Wrapper functions for the standard regset handling, used by
+ thread debugging. */
+
void
-store_inferior_registers (int regno)
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
{
- if ((regno < F0_REGNUM) || (regno > FPS_REGNUM))
- store_regs ();
+ arm_linux_collect_gregset (NULL, regcache, regno, gregsetp, 0);
+}
- if (((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) || (regno == -1))
- store_fpregs ();
+void
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
+{
+ arm_linux_supply_gregset (NULL, regcache, -1, gregsetp, 0);
}
-int
-arm_linux_register_u_addr (int blockend, int regnum)
+void
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
{
- return blockend + REGISTER_BYTE (regnum);
+ arm_linux_collect_nwfpe (NULL, regcache, regno, fpregsetp, 0);
}
-int
-arm_linux_kernel_u_size (void)
+/* Fill GDB's register array with the floating-point register values
+ in *fpregsetp. */
+
+void
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
+{
+ arm_linux_supply_nwfpe (NULL, regcache, -1, fpregsetp, 0);
+}
+
+/* Fetch the thread-local storage pointer for libthread_db. */
+
+ps_err_e
+ps_get_thread_area (const struct ps_prochandle *ph,
+ lwpid_t lwpid, int idx, void **base)
{
- return (sizeof (struct user));
+ if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
+ return PS_ERR;
+
+ /* IDX is the bias from the thread pointer to the beginning of the
+ thread descriptor. It has to be subtracted due to implementation
+ quirks in libthread_db. */
+ *base = (void *) ((char *)*base - idx);
+
+ return PS_OK;
}
static unsigned int
if (-1 == uname (&info))
{
- warning ("Unable to determine Linux version.");
+ warning (_("Unable to determine GNU/Linux version."));
return -1;
}
return ((*vmajor << 16) | (*vminor << 8) | *vrelease);
}
+static const struct target_desc *
+arm_linux_read_description (struct target_ops *ops)
+{
+ int ret;
+ char regbuf[IWMMXT_REGS_SIZE];
+
+ ret = ptrace (PTRACE_GETWMMXREGS, GET_THREAD_ID (inferior_ptid),
+ 0, regbuf);
+ if (ret < 0)
+ arm_linux_has_wmmx_registers = 0;
+ else
+ arm_linux_has_wmmx_registers = 1;
+
+ if (arm_linux_has_wmmx_registers)
+ return tdesc_arm_with_iwmmxt;
+ else
+ return NULL;
+}
+
+void _initialize_arm_linux_nat (void);
+
void
_initialize_arm_linux_nat (void)
{
+ struct target_ops *t;
+
os_version = get_linux_version (&os_major, &os_minor, &os_release);
+
+ /* Fill in the generic GNU/Linux methods. */
+ t = linux_target ();
+
+ /* Add our register access methods. */
+ t->to_fetch_registers = arm_linux_fetch_inferior_registers;
+ t->to_store_registers = arm_linux_store_inferior_registers;
+
+ t->to_read_description = arm_linux_read_description;
+
+ /* Register the target. */
+ linux_nat_add_target (t);
+
+ /* Initialize the standard target descriptions. */
+ initialize_tdesc_arm_with_iwmmxt ();
}
projects / deliverable / binutils-gdb.git / blobdiff