/* GNU/Linux on ARM native support.
- Copyright 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009,
+ 2010 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 "auxv.h"
+#include "arm-tdep.h"
+#include "arm-linux-tdep.h"
+
+#include <elf/common.h>
#include <sys/user.h>
#include <sys/ptrace.h>
#include <sys/utsname.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
-extern int arm_apcs_32;
+/* Defines ps_err_e, struct ps_prochandle. */
+#include "gdb_proc_service.h"
+
+#include "features/arm-with-iwmmxt.c"
+#include "features/arm-with-vfpv2.c"
+#include "features/arm-with-vfpv3.c"
+#include "features/arm-with-neon.c"
+
+#ifndef PTRACE_GET_THREAD_AREA
+#define PTRACE_GET_THREAD_AREA 22
+#endif
+
+#ifndef PTRACE_GETWMMXREGS
+#define PTRACE_GETWMMXREGS 18
+#define PTRACE_SETWMMXREGS 19
+#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_GETVFPREGS
+#define PTRACE_GETVFPREGS 27
+#define PTRACE_SETVFPREGS 28
+#endif
+
+/* These are in <asm/elf.h> in current kernels. */
+#define HWCAP_VFP 64
+#define HWCAP_IWMMXT 512
+#define HWCAP_NEON 4096
+#define HWCAP_VFPv3 8192
+#define HWCAP_VFPv3D16 16384
+
+/* A flag for whether the WMMX registers are available. */
+static int arm_linux_has_wmmx_registers;
+
+/* The number of 64-bit VFP registers we have (expect this to be 0,
+ 16, or 32). */
+static int arm_linux_vfp_register_count;
+
+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;
-/* On Linux, threads are implemented as pseudo-processes, in which
+/* 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_pid will contain the main process ID and the
- individual thread (process) ID mashed together. These macros are
- used to separate them out. These definitions should be overridden
- if thread support is included. */
-
-#if !defined (PIDGET) /* Default definition for PIDGET/TIDGET. */
-#define PIDGET(PID) PID
-#define TIDGET(PID) 0
-#endif
+ 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. */
int
-get_thread_id (int inferior_pid)
+get_thread_id (ptid_t ptid)
{
- int tid = TIDGET (inferior_pid);
- if (0 == tid) tid = inferior_pid;
+ int tid = TIDGET (ptid);
+ if (0 == tid)
+ tid = PIDGET (ptid);
return tid;
}
-#define GET_THREAD_ID(PID) get_thread_id ((PID));
-
-static void
-fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- mem[0] = fpa11->fpreg[fn].fSingle;
- mem[1] = 0;
- mem[2] = 0;
- supply_register (F0_REGNUM + fn, (char *) &mem[0]);
-}
-
-static void
-fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- 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]);
-}
-
-static void
-fetch_nwfpe_none (unsigned int fn)
-{
- unsigned int mem[3] =
- {0, 0, 0};
-
- supply_register (F0_REGNUM + fn, (char *) &mem[0]);
-}
-
-static void
-fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- 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]);
-}
-
-static void
-fetch_nwfpe_register (int regno, FPA11 * fpa11)
-{
- int fn = regno - F0_REGNUM;
-
- switch (fpa11->fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, fpa11);
- break;
-
- case typeDouble:
- fetch_nwfpe_double (fn, fpa11);
- break;
-
- case typeExtended:
- fetch_nwfpe_extended (fn, fpa11);
- break;
-
- default:
- fetch_nwfpe_none (fn);
- }
-}
-
-static void
-store_nwfpe_single (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
- fpa11->fpreg[fn].fSingle = mem[0];
- fpa11->fType[fn] = typeSingle;
-}
-
-static void
-store_nwfpe_double (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- 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;
-}
-
-void
-store_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
-{
- unsigned int mem[3];
-
- 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;
-}
-
-void
-store_nwfpe_register (int regno, FPA11 * fpa11)
-{
- if (register_valid[regno])
- {
- unsigned int fn = regno - F0_REGNUM;
- switch (fpa11->fType[fn])
- {
- case typeSingle:
- store_nwfpe_single (fn, fpa11);
- break;
-
- case typeDouble:
- store_nwfpe_double (fn, fpa11);
- break;
-
- case typeExtended:
- store_nwfpe_extended (fn, fpa11);
- break;
- }
- }
-}
+#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 registers[]. */
+ state of the process and store it into regcache. */
static void
-fetch_fpregister (int regno)
+fetch_fpregister (struct regcache *regcache, int regno)
{
int ret, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
- warning ("Unable to fetch floating point register.");
+ warning (_("Unable to fetch floating point register."));
return;
}
/* Fetch fpsr. */
- if (FPS_REGNUM == regno)
- supply_register (FPS_REGNUM, (char *) &fp.fpsr);
+ if (ARM_FPS_REGNUM == regno)
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
/* Fetch the floating point register. */
- if (regno >= F0_REGNUM && regno <= F7_REGNUM)
- {
- int fn = regno - F0_REGNUM;
-
- switch (fp.fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, &fp);
- break;
-
- case typeDouble:
- fetch_nwfpe_double (fn, &fp);
- break;
-
- case typeExtended:
- fetch_nwfpe_extended (fn, &fp);
- break;
-
- default:
- fetch_nwfpe_none (fn);
- }
- }
+ 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 registers[]. */
+ into regcache. */
static void
-fetch_fpregs (void)
+fetch_fpregs (struct regcache *regcache)
{
int ret, regno, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
- warning ("Unable to fetch the floating point registers.");
+ warning (_("Unable to fetch the floating point registers."));
return;
}
/* Fetch fpsr. */
- supply_register (FPS_REGNUM, (char *) &fp.fpsr);
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM,
+ fp + NWFPE_FPSR_OFFSET);
/* Fetch the floating point registers. */
- for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
- {
- int fn = regno - F0_REGNUM;
-
- switch (fp.fType[fn])
- {
- case typeSingle:
- fetch_nwfpe_single (fn, &fp);
- break;
-
- case typeDouble:
- fetch_nwfpe_double (fn, &fp);
- break;
-
- case typeExtended:
- fetch_nwfpe_extended (fn, &fp);
- break;
-
- default:
- fetch_nwfpe_none (fn);
- }
- }
+ 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 registers[]. */
+ process using the contents from regcache. */
static void
-store_fpregister (int regno)
+store_fpregister (const struct regcache *regcache, int regno)
{
int ret, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
- warning ("Unable to fetch the floating point registers.");
+ warning (_("Unable to fetch the floating point registers."));
return;
}
/* Store fpsr. */
- if (FPS_REGNUM == regno && register_valid[FPS_REGNUM])
- read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);
+ if (ARM_FPS_REGNUM == regno && regcache_valid_p (regcache, ARM_FPS_REGNUM))
+ regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
/* Store the floating point register. */
- if (regno >= F0_REGNUM && regno <= F7_REGNUM)
- {
- store_nwfpe_register (regno, &fp);
- }
+ if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
+ collect_nwfpe_register (regcache, regno, fp);
- ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
+ ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
{
- warning ("Unable to store floating point register.");
+ warning (_("Unable to store floating point register."));
return;
}
}
/* Save the whole floating point state of the process using
- the contents from registers[]. */
+ the contents from regcache. */
static void
-store_fpregs (void)
+store_fpregs (const struct regcache *regcache)
{
int ret, regno, tid;
- FPA11 fp;
+ gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
- ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
+ ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
{
- warning ("Unable to fetch the floating point registers.");
+ warning (_("Unable to fetch the floating point registers."));
return;
}
/* Store fpsr. */
- if (register_valid[FPS_REGNUM])
- read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);
+ if (regcache_valid_p (regcache, ARM_FPS_REGNUM))
+ regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET);
/* Store the floating point registers. */
- for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
- {
- fetch_nwfpe_register (regno, &fp);
- }
+ 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);
+ ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
{
- warning ("Unable to store floating point registers.");
+ warning (_("Unable to store floating point registers."));
return;
}
}
/* Fetch a general register of the process and store into
- registers[]. */
+ regcache. */
static void
-fetch_register (int regno)
+fetch_register (struct regcache *regcache, int regno)
{
int ret, tid;
- struct pt_regs regs;
+ elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ tid = GET_THREAD_ID (inferior_ptid);
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
if (ret < 0)
{
- warning ("Unable to fetch general register.");
+ warning (_("Unable to fetch general register."));
return;
}
- if (regno >= A1_REGNUM && regno < PC_REGNUM)
- supply_register (regno, (char *) ®s.uregs[regno]);
+ if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM)
+ regcache_raw_supply (regcache, regno, (char *) ®s[regno]);
- if (PS_REGNUM == regno)
+ if (ARM_PS_REGNUM == regno)
{
if (arm_apcs_32)
- supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_CPSR_GREGNUM]);
else
- supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
}
- if (PC_REGNUM == regno)
+ if (ARM_PC_REGNUM == regno)
{
- regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);
- supply_register (PC_REGNUM, (char *) ®s.uregs[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]);
}
}
/* Fetch all general registers of the process and store into
- registers[]. */
+ regcache. */
static void
-fetch_regs (void)
+fetch_regs (struct regcache *regcache)
{
int ret, regno, tid;
- struct pt_regs regs;
+ elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ tid = GET_THREAD_ID (inferior_ptid);
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
if (ret < 0)
{
- warning ("Unable to fetch general registers.");
+ warning (_("Unable to fetch general registers."));
return;
}
- for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)
- supply_register (regno, (char *) ®s.uregs[regno]);
+ for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
+ regcache_raw_supply (regcache, regno, (char *) ®s[regno]);
if (arm_apcs_32)
- supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_CPSR_GREGNUM]);
else
- supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
- regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);
- supply_register (PC_REGNUM, (char *) ®s.uregs[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]);
}
/* Store all general registers of the process from the values in
- registers[]. */
+ regcache. */
static void
-store_register (int regno)
+store_register (const struct regcache *regcache, int regno)
{
int ret, tid;
- struct pt_regs regs;
+ elf_gregset_t regs;
- if (!register_valid[regno])
+ if (!regcache_valid_p (regcache, regno))
return;
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ 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.");
+ warning (_("Unable to fetch general registers."));
return;
}
- if (regno >= A1_REGNUM && regno <= PC_REGNUM)
- read_register_gen (regno, (char *) ®s.uregs[regno]);
+ 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_GREGNUM]);
+ else if (!arm_apcs_32 && regno == ARM_PS_REGNUM)
+ regcache_raw_collect (regcache, ARM_PC_REGNUM,
+ (char *) ®s[ARM_PC_REGNUM]);
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
if (ret < 0)
{
- warning ("Unable to store general register.");
+ warning (_("Unable to store general register."));
return;
}
}
static void
-store_regs (void)
+store_regs (const struct regcache *regcache)
{
int ret, regno, tid;
- struct pt_regs regs;
+ elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
- tid = GET_THREAD_ID (inferior_pid);
+ 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.");
+ warning (_("Unable to fetch general registers."));
return;
}
- for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++)
+ for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
{
- if (register_valid[regno])
- read_register_gen (regno, (char *) ®s.uregs[regno]);
+ if (regcache_valid_p (regcache, regno))
+ regcache_raw_collect (regcache, regno, (char *) ®s[regno]);
}
+ if (arm_apcs_32 && regcache_valid_p (regcache, ARM_PS_REGNUM))
+ regcache_raw_collect (regcache, ARM_PS_REGNUM,
+ (char *) ®s[ARM_CPSR_GREGNUM]);
+
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
if (ret < 0)
{
- warning ("Unable to store general registers.");
+ warning (_("Unable to store general registers."));
return;
}
}
-/* Fetch registers from the child process. Fetch all registers if
- regno == -1, otherwise fetch all general registers or all floating
- point registers depending upon the value of regno. */
+/* Fetch all WMMX registers of the process and store into
+ regcache. */
-void
-fetch_inferior_registers (int regno)
+#define IWMMXT_REGS_SIZE (16 * 8 + 6 * 4)
+
+static void
+fetch_wmmx_regs (struct regcache *regcache)
{
- if (-1 == regno)
+ 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_GETWMMXREGS, tid, 0, regbuf);
+ if (ret < 0)
{
- fetch_regs ();
- fetch_fpregs ();
+ warning (_("Unable to fetch WMMX registers."));
+ return;
}
- else
+
+ for (regno = 0; regno < 16; regno++)
+ regcache_raw_supply (regcache, regno + ARM_WR0_REGNUM,
+ ®buf[regno * 8]);
+
+ for (regno = 0; regno < 2; regno++)
+ regcache_raw_supply (regcache, regno + ARM_WCSSF_REGNUM,
+ ®buf[16 * 8 + regno * 4]);
+
+ for (regno = 0; regno < 4; regno++)
+ regcache_raw_supply (regcache, regno + ARM_WCGR0_REGNUM,
+ ®buf[16 * 8 + 2 * 4 + regno * 4]);
+}
+
+static void
+store_wmmx_regs (const struct regcache *regcache)
+{
+ 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_GETWMMXREGS, tid, 0, regbuf);
+ if (ret < 0)
{
- if (regno < F0_REGNUM || regno > FPS_REGNUM)
- fetch_register (regno);
+ warning (_("Unable to fetch WMMX registers."));
+ return;
+ }
+
+ 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]);
- if (regno >= F0_REGNUM && regno <= FPS_REGNUM)
- fetch_fpregister (regno);
+ 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]);
+
+ 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 WMMX registers."));
+ return;
}
}
-/* 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. */
+/* Fetch and store VFP Registers. The kernel object has space for 32
+ 64-bit registers, and the FPSCR. This is even when on a VFPv2 or
+ VFPv3D16 target. */
+#define VFP_REGS_SIZE (32 * 8 + 4)
-void
-store_inferior_registers (int regno)
+static void
+fetch_vfp_regs (struct regcache *regcache)
{
- if (-1 == regno)
+ char regbuf[VFP_REGS_SIZE];
+ int ret, regno, tid;
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf);
+ if (ret < 0)
{
- store_regs ();
- store_fpregs ();
+ warning (_("Unable to fetch VFP registers."));
+ return;
}
- else
+
+ for (regno = 0; regno < arm_linux_vfp_register_count; regno++)
+ regcache_raw_supply (regcache, regno + ARM_D0_REGNUM,
+ (char *) regbuf + regno * 8);
+
+ regcache_raw_supply (regcache, ARM_FPSCR_REGNUM,
+ (char *) regbuf + 32 * 8);
+}
+
+static void
+store_vfp_regs (const struct regcache *regcache)
+{
+ char regbuf[VFP_REGS_SIZE];
+ int ret, regno, tid;
+
+ /* Get the thread id for the ptrace call. */
+ tid = GET_THREAD_ID (inferior_ptid);
+
+ ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf);
+ if (ret < 0)
{
- if ((regno < F0_REGNUM) || (regno > FPS_REGNUM))
- store_register (regno);
+ warning (_("Unable to fetch VFP registers (for update)."));
+ return;
+ }
+
+ for (regno = 0; regno < arm_linux_vfp_register_count; regno++)
+ regcache_raw_collect (regcache, regno + ARM_D0_REGNUM,
+ (char *) regbuf + regno * 8);
+
+ regcache_raw_collect (regcache, ARM_FPSCR_REGNUM,
+ (char *) regbuf + 32 * 8);
+
+ ret = ptrace (PTRACE_SETVFPREGS, tid, 0, regbuf);
- if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM))
- store_fpregister (regno);
+ if (ret < 0)
+ {
+ warning (_("Unable to store VFP registers."));
+ return;
}
}
-/* Fill register regno (if it is a general-purpose register) in
- *gregsetp with the appropriate value from GDB's register array.
- If regno is -1, do this for all registers. */
+/* Fetch registers from the child process. Fetch all registers if
+ regno == -1, otherwise fetch all general registers or all floating
+ point registers depending upon the value of regno. */
-void
-fill_gregset (gregset_t *gregsetp, int regno)
+static void
+arm_linux_fetch_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
if (-1 == regno)
{
- int regnum;
- for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++)
- if (register_valid[regnum])
- read_register_gen (regnum, (char *) &(*gregsetp)[regnum]);
+ fetch_regs (regcache);
+ fetch_fpregs (regcache);
+ if (arm_linux_has_wmmx_registers)
+ fetch_wmmx_regs (regcache);
+ if (arm_linux_vfp_register_count > 0)
+ fetch_vfp_regs (regcache);
}
- else if (regno >= A1_REGNUM && regno <= PC_REGNUM)
+ else
{
- if (register_valid[regno])
- read_register_gen (regno, (char *) &(*gregsetp)[regno]);
+ 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);
+ else if (arm_linux_vfp_register_count > 0
+ && regno >= ARM_D0_REGNUM
+ && regno <= ARM_D0_REGNUM + arm_linux_vfp_register_count)
+ fetch_vfp_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. */
- if (PS_REGNUM == regno || -1 == regno)
+static void
+arm_linux_store_inferior_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
+{
+ if (-1 == regno)
{
- if (register_valid[regno] || -1 == regno)
- {
- if (arm_apcs_32)
- read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]);
- else
- read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]);
- }
+ store_regs (regcache);
+ store_fpregs (regcache);
+ if (arm_linux_has_wmmx_registers)
+ store_wmmx_regs (regcache);
+ if (arm_linux_vfp_register_count > 0)
+ store_vfp_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);
+ else if (arm_linux_vfp_register_count > 0
+ && regno >= ARM_D0_REGNUM
+ && regno <= ARM_D0_REGNUM + arm_linux_vfp_register_count)
+ store_vfp_regs (regcache);
}
-
}
-/* Fill GDB's register array with the general-purpose register values
- in *gregsetp. */
+/* Wrapper functions for the standard regset handling, used by
+ thread debugging. */
void
-supply_gregset (gregset_t *gregsetp)
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
{
- int regno, reg_pc;
-
- for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)
- supply_register (regno, (char *) &(*gregsetp)[regno]);
-
- if (arm_apcs_32)
- supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]);
- else
- supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]);
-
- reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]);
- supply_register (PC_REGNUM, (char *) ®_pc);
+ arm_linux_collect_gregset (NULL, regcache, regno, gregsetp, 0);
}
-/* Fill register regno (if it is a floating-point register) in
- *fpregsetp with the appropriate value from GDB's register array.
- If regno is -1, do this for all registers. */
-
void
-fill_fpregset (fpregset_t *fpregsetp, int regno)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
{
- FPA11 *fp = (FPA11 *) fpregsetp;
-
- if (-1 == regno)
- {
- int regnum;
- for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++)
- store_nwfpe_register (regnum, fp);
- }
- else if (regno >= F0_REGNUM && regno <= F7_REGNUM)
- {
- store_nwfpe_register (regno, fp);
- return;
- }
+ arm_linux_supply_gregset (NULL, regcache, -1, gregsetp, 0);
+}
- /* Store fpsr. */
- if (register_valid[FPS_REGNUM])
- if (FPS_REGNUM == regno || -1 == regno)
- read_register_gen (FPS_REGNUM, (char *) &fp->fpsr);
+void
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
+{
+ arm_linux_collect_nwfpe (NULL, regcache, regno, fpregsetp, 0);
}
/* Fill GDB's register array with the floating-point register values
in *fpregsetp. */
void
-supply_fpregset (fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
{
- int regno;
- FPA11 *fp = (FPA11 *) fpregsetp;
-
- /* Fetch fpsr. */
- supply_register (FPS_REGNUM, (char *) &fp->fpsr);
-
- /* Fetch the floating point registers. */
- for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
- {
- fetch_nwfpe_register (regno, fp);
- }
+ arm_linux_supply_nwfpe (NULL, regcache, -1, fpregsetp, 0);
}
-int
-arm_linux_kernel_u_size (void)
+/* 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)
+{
+ CORE_ADDR arm_hwcap = 0;
+ arm_linux_has_wmmx_registers = 0;
+ arm_linux_vfp_register_count = 0;
+
+ if (target_auxv_search (ops, AT_HWCAP, &arm_hwcap) != 1)
+ {
+ return NULL;
+ }
+
+ if (arm_hwcap & HWCAP_IWMMXT)
+ {
+ arm_linux_has_wmmx_registers = 1;
+ if (tdesc_arm_with_iwmmxt == NULL)
+ initialize_tdesc_arm_with_iwmmxt ();
+ return tdesc_arm_with_iwmmxt;
+ }
+
+ if (arm_hwcap & HWCAP_VFP)
+ {
+ int pid;
+ char *buf;
+ const struct target_desc * result = NULL;
+
+ /* NEON implies VFPv3-D32 or no-VFP unit. Say that we only support
+ Neon with VFPv3-D32. */
+ if (arm_hwcap & HWCAP_NEON)
+ {
+ arm_linux_vfp_register_count = 32;
+ if (tdesc_arm_with_neon == NULL)
+ initialize_tdesc_arm_with_neon ();
+ result = tdesc_arm_with_neon;
+ }
+ else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3)
+ {
+ arm_linux_vfp_register_count = 32;
+ if (tdesc_arm_with_vfpv3 == NULL)
+ initialize_tdesc_arm_with_vfpv3 ();
+ result = tdesc_arm_with_vfpv3;
+ }
+ else
+ {
+ arm_linux_vfp_register_count = 16;
+ if (tdesc_arm_with_vfpv2 == NULL)
+ initialize_tdesc_arm_with_vfpv2 ();
+ result = tdesc_arm_with_vfpv2;
+ }
+
+ /* Now make sure that the kernel supports reading these
+ registers. Support was added in 2.6.30. */
+ pid = GET_LWP (inferior_ptid);
+ errno = 0;
+ buf = alloca (VFP_REGS_SIZE);
+ if (ptrace (PTRACE_GETVFPREGS, pid, 0, buf) < 0
+ && errno == EIO)
+ result = NULL;
+
+ return result;
+ }
+
+ 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);
}
projects / deliverable / binutils-gdb.git / blobdiff