#include "regcache.h"
#include "target.h"
#include "linux-nat.h"
+#include "target-descriptions.h"
+#include "xml-support.h"
#include "arm-tdep.h"
#include "arm-linux-tdep.h"
#define PTRACE_GET_THREAD_AREA 22
#endif
+#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
tid = PIDGET (ptid);
return tid;
}
-#define GET_THREAD_ID(PTID) get_thread_id ((PTID));
+#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_fpregister (int regno)
+fetch_fpregister (struct regcache *regcache, int regno)
{
int ret, tid;
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Fetch fpsr. */
if (ARM_FPS_REGNUM == regno)
- regcache_raw_supply (current_regcache, ARM_FPS_REGNUM,
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM,
fp + NWFPE_FPSR_OFFSET);
/* Fetch the floating point register. */
if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
- supply_nwfpe_register (current_regcache, regno, fp);
+ supply_nwfpe_register (regcache, regno, fp);
}
/* Get the whole floating point state of the process and store it
into regcache. */
static void
-fetch_fpregs (void)
+fetch_fpregs (struct regcache *regcache)
{
int ret, regno, tid;
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
}
/* Fetch fpsr. */
- regcache_raw_supply (current_regcache, ARM_FPS_REGNUM,
+ regcache_raw_supply (regcache, ARM_FPS_REGNUM,
fp + NWFPE_FPSR_OFFSET);
/* Fetch the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
- supply_nwfpe_register (current_regcache, regno, fp);
+ 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
-store_fpregister (int regno)
+store_fpregister (const struct regcache *regcache, int regno)
{
int ret, tid;
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
}
/* Store fpsr. */
- if (ARM_FPS_REGNUM == regno && register_cached (ARM_FPS_REGNUM))
- regcache_raw_collect (current_regcache, ARM_FPS_REGNUM,
- fp + NWFPE_FPSR_OFFSET);
+ 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 >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
- collect_nwfpe_register (current_regcache, regno, fp);
+ collect_nwfpe_register (regcache, regno, fp);
ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
the contents from regcache. */
static void
-store_fpregs (void)
+store_fpregs (const struct regcache *regcache)
{
int ret, regno, tid;
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
}
/* Store fpsr. */
- if (register_cached (ARM_FPS_REGNUM))
- regcache_raw_collect (current_regcache, ARM_FPS_REGNUM,
- fp + NWFPE_FPSR_OFFSET);
+ 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 = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
- if (register_cached (regno))
- collect_nwfpe_register (current_regcache, regno, fp);
+ if (regcache_valid_p (regcache, regno))
+ collect_nwfpe_register (regcache, regno, fp);
ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
regcache. */
static void
-fetch_register (int regno)
+fetch_register (struct regcache *regcache, int regno)
{
int ret, tid;
elf_gregset_t regs;
}
if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM)
- regcache_raw_supply (current_regcache, regno, (char *) ®s[regno]);
+ regcache_raw_supply (regcache, regno, (char *) ®s[regno]);
if (ARM_PS_REGNUM == regno)
{
if (arm_apcs_32)
- regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
(char *) ®s[ARM_CPSR_REGNUM]);
else
- regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
(char *) ®s[ARM_PC_REGNUM]);
}
if (ARM_PC_REGNUM == regno)
{
- regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]);
- regcache_raw_supply (current_regcache, ARM_PC_REGNUM,
+ regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove
+ (current_gdbarch, regs[ARM_PC_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PC_REGNUM,
(char *) ®s[ARM_PC_REGNUM]);
}
}
regcache. */
static void
-fetch_regs (void)
+fetch_regs (struct regcache *regcache)
{
int ret, regno, tid;
elf_gregset_t regs;
}
for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
- regcache_raw_supply (current_regcache, regno, (char *) ®s[regno]);
+ regcache_raw_supply (regcache, regno, (char *) ®s[regno]);
if (arm_apcs_32)
- regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
(char *) ®s[ARM_CPSR_REGNUM]);
else
- regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
+ regcache_raw_supply (regcache, ARM_PS_REGNUM,
(char *) ®s[ARM_PC_REGNUM]);
- regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]);
- regcache_raw_supply (current_regcache, ARM_PC_REGNUM,
+ regs[ARM_PC_REGNUM] = gdbarch_addr_bits_remove
+ (current_gdbarch, regs[ARM_PC_REGNUM]);
+ regcache_raw_supply (regcache, ARM_PC_REGNUM,
(char *) ®s[ARM_PC_REGNUM]);
}
regcache. */
static void
-store_register (int regno)
+store_register (const struct regcache *regcache, int regno)
{
int ret, tid;
elf_gregset_t regs;
- if (!register_cached (regno))
+ if (!regcache_valid_p (regcache, regno))
return;
/* Get the thread id for the ptrace call. */
}
if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
- regcache_raw_collect (current_regcache, regno, (char *) ®s[regno]);
+ regcache_raw_collect (regcache, regno, (char *) ®s[regno]);
else if (arm_apcs_32 && regno == ARM_PS_REGNUM)
- regcache_raw_collect (current_regcache, regno,
+ regcache_raw_collect (regcache, regno,
(char *) ®s[ARM_CPSR_REGNUM]);
else if (!arm_apcs_32 && regno == ARM_PS_REGNUM)
- regcache_raw_collect (current_regcache, ARM_PC_REGNUM,
+ regcache_raw_collect (regcache, ARM_PC_REGNUM,
(char *) ®s[ARM_PC_REGNUM]);
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
}
static void
-store_regs (void)
+store_regs (const struct regcache *regcache)
{
int ret, regno, tid;
elf_gregset_t regs;
for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
{
- if (register_cached (regno))
- regcache_raw_collect (current_regcache, regno, (char *) ®s[regno]);
+ if (regcache_valid_p (regcache, regno))
+ regcache_raw_collect (regcache, regno, (char *) ®s[regno]);
}
- if (arm_apcs_32 && register_cached (ARM_PS_REGNUM))
- regcache_raw_collect (current_regcache, ARM_PS_REGNUM,
+ 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);
}
}
+/* Fetch all WMMX registers of the process and store into
+ regcache. */
+
+#define IWMMXT_REGS_SIZE (16 * 8 + 6 * 4)
+
+static void
+fetch_wmmx_regs (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)
+ {
+ warning (_("Unable to fetch WMMX registers."));
+ return;
+ }
+
+ 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)
+ {
+ 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]);
+
+ 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;
+ }
+}
+
/* 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. */
static void
-arm_linux_fetch_inferior_registers (int regno)
+arm_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
{
if (-1 == regno)
{
- fetch_regs ();
- fetch_fpregs ();
+ fetch_regs (regcache);
+ fetch_fpregs (regcache);
+ if (arm_linux_has_wmmx_registers)
+ fetch_wmmx_regs (regcache);
}
else
{
- if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
- fetch_register (regno);
-
- if (regno >= ARM_F0_REGNUM && regno <= ARM_FPS_REGNUM)
- fetch_fpregister (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);
}
}
point registers depending upon the value of regno. */
static void
-arm_linux_store_inferior_registers (int regno)
+arm_linux_store_inferior_registers (struct regcache *regcache, int regno)
{
if (-1 == regno)
{
- store_regs ();
- store_fpregs ();
+ store_regs (regcache);
+ store_fpregs (regcache);
+ if (arm_linux_has_wmmx_registers)
+ store_wmmx_regs (regcache);
}
else
{
- if ((regno < ARM_F0_REGNUM) || (regno > ARM_FPS_REGNUM))
- store_register (regno);
-
- if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_FPS_REGNUM))
- store_fpregister (regno);
+ 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);
}
}
thread debugging. */
void
-fill_gregset (gdb_gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
{
- arm_linux_collect_gregset (NULL, current_regcache, regno, gregsetp, 0);
+ arm_linux_collect_gregset (NULL, regcache, regno, gregsetp, 0);
}
void
-supply_gregset (gdb_gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
{
- arm_linux_supply_gregset (NULL, current_regcache, -1, gregsetp, 0);
+ arm_linux_supply_gregset (NULL, regcache, -1, gregsetp, 0);
}
void
-fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
{
- arm_linux_collect_nwfpe (NULL, current_regcache, regno, fpregsetp, 0);
+ 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 (gdb_fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
{
- arm_linux_supply_nwfpe (NULL, current_regcache, -1, fpregsetp, 0);
-}
-
-int
-arm_linux_kernel_u_size (void)
-{
- return (sizeof (struct user));
+ arm_linux_supply_nwfpe (NULL, regcache, -1, fpregsetp, 0);
}
/* Fetch the thread-local storage pointer for libthread_db. */
return ((*vmajor << 16) | (*vminor << 8) | *vrelease);
}
+static LONGEST (*super_xfer_partial) (struct target_ops *, enum target_object,
+ const char *, gdb_byte *, const gdb_byte *,
+ ULONGEST, LONGEST);
+
+static LONGEST
+arm_linux_xfer_partial (struct target_ops *ops,
+ enum target_object object,
+ const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len)
+{
+ if (object == TARGET_OBJECT_AVAILABLE_FEATURES)
+ {
+ if (annex != NULL && strcmp (annex, "target.xml") == 0)
+ {
+ 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)
+ annex = "arm-with-iwmmxt.xml";
+ else
+ return -1;
+ }
+
+ return xml_builtin_xfer_partial (annex, readbuf, writebuf, offset, len);
+ }
+
+ return super_xfer_partial (ops, object, annex, readbuf, writebuf,
+ offset, len);
+}
+
void _initialize_arm_linux_nat (void);
void
t->to_fetch_registers = arm_linux_fetch_inferior_registers;
t->to_store_registers = arm_linux_store_inferior_registers;
+ /* Override the default to_xfer_partial. */
+ super_xfer_partial = t->to_xfer_partial;
+ t->to_xfer_partial = arm_linux_xfer_partial;
+
/* Register the target. */
linux_nat_add_target (t);
}