/* GNU/Linux on ARM native support.
- Copyright (C) 1999-2016 Free Software Foundation, Inc.
+ Copyright (C) 1999-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "linux-nat.h"
#include "target-descriptions.h"
#include "auxv.h"
-#include "observer.h"
+#include "observable.h"
#include "gdbthread.h"
#include "arm-tdep.h"
extern int arm_apcs_32;
+class arm_linux_nat_target final : public linux_nat_target
+{
+public:
+ /* Add our register access methods. */
+ void fetch_registers (struct regcache *, int) override;
+ void store_registers (struct regcache *, int) override;
+
+ /* Add our hardware breakpoint and watchpoint implementation. */
+ int can_use_hw_breakpoint (enum bptype, int, int) override;
+
+ int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override;
+
+ int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override;
+
+ int region_ok_for_hw_watchpoint (CORE_ADDR, int) override;
+
+ int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
+ struct expression *) override;
+
+ int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
+ struct expression *) override;
+ bool stopped_by_watchpoint () override;
+
+ bool stopped_data_address (CORE_ADDR *) override;
+
+ bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override;
+
+ const struct target_desc *read_description () override;
+
+ /* Override linux_nat_target low methods. */
+
+ /* Handle thread creation and exit. */
+ void low_new_thread (struct lwp_info *lp) override;
+ void low_delete_thread (struct arch_lwp_info *lp) override;
+ void low_prepare_to_resume (struct lwp_info *lp) override;
+
+ /* Handle process creation and exit. */
+ void low_new_fork (struct lwp_info *parent, pid_t child_pid) override;
+ void low_forget_process (pid_t pid) override;
+};
+
+static arm_linux_nat_target the_arm_linux_nat_target;
+
/* Get the whole floating point state of the process and store it
into regcache. */
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
/* Read the floating point state. */
if (have_ptrace_getregset == TRIBOOL_TRUE)
ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
- {
- warning (_("Unable to fetch the floating point registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch the floating point registers."));
/* Fetch fpsr. */
regcache_raw_supply (regcache, ARM_FPS_REGNUM,
gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE];
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
/* Read the floating point state. */
if (have_ptrace_getregset == TRIBOOL_TRUE)
ret = ptrace (PT_GETFPREGS, tid, 0, fp);
if (ret < 0)
- {
- warning (_("Unable to fetch the floating point registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch the floating point registers."));
/* Store fpsr. */
if (REG_VALID == regcache_register_status (regcache, ARM_FPS_REGNUM))
ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp);
if (ret < 0)
- {
- warning (_("Unable to store floating point registers."));
- return;
- }
+ perror_with_name (_("Unable to store floating point registers."));
}
/* Fetch all general registers of the process and store into
elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
if (have_ptrace_getregset == TRIBOOL_TRUE)
{
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
if (ret < 0)
- {
- warning (_("Unable to fetch general registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch general registers."));
aarch32_gp_regcache_supply (regcache, (uint32_t *) regs, arm_apcs_32);
}
elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
/* Fetch the general registers. */
if (have_ptrace_getregset == TRIBOOL_TRUE)
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
if (ret < 0)
- {
- warning (_("Unable to fetch general registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch general registers."));
aarch32_gp_regcache_collect (regcache, (uint32_t *) regs, arm_apcs_32);
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
if (ret < 0)
- {
- warning (_("Unable to store general registers."));
- return;
- }
+ perror_with_name (_("Unable to store general registers."));
}
/* Fetch all WMMX registers of the process and store into
int ret, regno, tid;
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
- {
- warning (_("Unable to fetch WMMX registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch WMMX registers."));
for (regno = 0; regno < 16; regno++)
regcache_raw_supply (regcache, regno + ARM_WR0_REGNUM,
int ret, regno, tid;
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
- {
- warning (_("Unable to fetch WMMX registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch WMMX registers."));
for (regno = 0; regno < 16; regno++)
if (REG_VALID == regcache_register_status (regcache,
ret = ptrace (PTRACE_SETWMMXREGS, tid, 0, regbuf);
if (ret < 0)
- {
- warning (_("Unable to store WMMX registers."));
- return;
- }
+ perror_with_name (_("Unable to store WMMX registers."));
}
static void
{
gdb_byte regbuf[VFP_REGS_SIZE];
int ret, regno, tid;
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
if (have_ptrace_getregset == TRIBOOL_TRUE)
{
ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf);
if (ret < 0)
- {
- warning (_("Unable to fetch VFP registers."));
- return;
- }
+ perror_with_name (_("Unable to fetch VFP registers."));
aarch32_vfp_regcache_supply (regcache, regbuf,
tdep->vfp_register_count);
{
gdb_byte regbuf[VFP_REGS_SIZE];
int ret, regno, tid;
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Get the thread id for the ptrace call. */
- tid = ptid_get_lwp (inferior_ptid);
+ tid = ptid_get_lwp (regcache_get_ptid (regcache));
if (have_ptrace_getregset == TRIBOOL_TRUE)
{
ret = ptrace (PTRACE_GETVFPREGS, tid, 0, regbuf);
if (ret < 0)
- {
- warning (_("Unable to fetch VFP registers (for update)."));
- return;
- }
+ perror_with_name (_("Unable to fetch VFP registers (for update)."));
aarch32_vfp_regcache_collect (regcache, regbuf,
tdep->vfp_register_count);
ret = ptrace (PTRACE_SETVFPREGS, tid, 0, regbuf);
if (ret < 0)
- {
- warning (_("Unable to store VFP registers."));
- return;
- }
+ perror_with_name (_("Unable to store VFP 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. */
-static void
-arm_linux_fetch_inferior_registers (struct target_ops *ops,
- struct regcache *regcache, int regno)
+void
+arm_linux_nat_target::fetch_registers (struct regcache *regcache, int regno)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (-1 == regno)
{
fetch_regs (regcache);
- fetch_fpregs (regcache);
if (tdep->have_wmmx_registers)
fetch_wmmx_regs (regcache);
if (tdep->vfp_register_count > 0)
fetch_vfp_regs (regcache);
+ if (tdep->have_fpa_registers)
+ fetch_fpregs (regcache);
}
- else
+ else
{
if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM)
fetch_regs (regcache);
fetch_wmmx_regs (regcache);
else if (tdep->vfp_register_count > 0
&& regno >= ARM_D0_REGNUM
- && regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
+ && (regno < ARM_D0_REGNUM + tdep->vfp_register_count
+ || regno == ARM_FPSCR_REGNUM))
fetch_vfp_regs (regcache);
}
}
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 target_ops *ops,
- struct regcache *regcache, int regno)
+void
+arm_linux_nat_target::store_registers (struct regcache *regcache, int regno)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (-1 == regno)
{
store_regs (regcache);
- store_fpregs (regcache);
if (tdep->have_wmmx_registers)
store_wmmx_regs (regcache);
if (tdep->vfp_register_count > 0)
store_vfp_regs (regcache);
+ if (tdep->have_fpa_registers)
+ store_fpregs (regcache);
}
else
{
store_wmmx_regs (regcache);
else if (tdep->vfp_register_count > 0
&& regno >= ARM_D0_REGNUM
- && regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
+ && (regno < ARM_D0_REGNUM + tdep->vfp_register_count
+ || regno == ARM_FPSCR_REGNUM))
store_vfp_regs (regcache);
}
}
/* Fetch the thread-local storage pointer for libthread_db. */
ps_err_e
-ps_get_thread_area (const struct ps_prochandle *ph,
+ps_get_thread_area (struct ps_prochandle *ph,
lwpid_t lwpid, int idx, void **base)
{
if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
return PS_OK;
}
-static const struct target_desc *
-arm_linux_read_description (struct target_ops *ops)
+const struct target_desc *
+arm_linux_nat_target::read_description ()
{
CORE_ADDR arm_hwcap = 0;
have_ptrace_getregset = TRIBOOL_TRUE;
}
- if (target_auxv_search (ops, AT_HWCAP, &arm_hwcap) != 1)
+ if (target_auxv_search (this, AT_HWCAP, &arm_hwcap) != 1)
{
- return ops->beneath->to_read_description (ops->beneath);
+ return this->beneath->read_description ();
}
if (arm_hwcap & HWCAP_IWMMXT)
return result;
}
- return ops->beneath->to_read_description (ops->beneath);
+ return this->beneath->read_description ();
}
/* Information describing the hardware breakpoint capabilities. */
/* Have we got a free break-/watch-point available for use? Returns -1 if
there is not an appropriate resource available, otherwise returns 1. */
-static int
-arm_linux_can_use_hw_breakpoint (struct target_ops *self,
- enum bptype type,
- int cnt, int ot)
+int
+arm_linux_nat_target::can_use_hw_breakpoint (enum bptype type,
+ int cnt, int ot)
{
if (type == bp_hardware_watchpoint || type == bp_read_watchpoint
|| type == bp_access_watchpoint || type == bp_watchpoint)
/* Called whenever GDB is no longer debugging process PID. It deletes
data structures that keep track of debug register state. */
-static void
-arm_linux_forget_process (pid_t pid)
+void
+arm_linux_nat_target::low_forget_process (pid_t pid)
{
struct arm_linux_process_info *proc, **proc_link;
}
/* Insert a Hardware breakpoint. */
-static int
-arm_linux_insert_hw_breakpoint (struct target_ops *self,
- struct gdbarch *gdbarch,
- struct bp_target_info *bp_tgt)
+int
+arm_linux_nat_target::insert_hw_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
struct lwp_info *lp;
struct arm_linux_hw_breakpoint p;
}
/* Remove a hardware breakpoint. */
-static int
-arm_linux_remove_hw_breakpoint (struct target_ops *self,
- struct gdbarch *gdbarch,
- struct bp_target_info *bp_tgt)
+int
+arm_linux_nat_target::remove_hw_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
struct lwp_info *lp;
struct arm_linux_hw_breakpoint p;
/* Are we able to use a hardware watchpoint for the LEN bytes starting at
ADDR? */
-static int
-arm_linux_region_ok_for_hw_watchpoint (struct target_ops *self,
- CORE_ADDR addr, int len)
+int
+arm_linux_nat_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
{
const struct arm_linux_hwbp_cap *cap = arm_linux_get_hwbp_cap ();
CORE_ADDR max_wp_length, aligned_addr;
}
/* Insert a Hardware breakpoint. */
-static int
-arm_linux_insert_watchpoint (struct target_ops *self,
- CORE_ADDR addr, int len,
- enum target_hw_bp_type rw,
- struct expression *cond)
+int
+arm_linux_nat_target::insert_watchpoint (CORE_ADDR addr, int len,
+ enum target_hw_bp_type rw,
+ struct expression *cond)
{
struct lwp_info *lp;
struct arm_linux_hw_breakpoint p;
}
/* Remove a hardware breakpoint. */
-static int
-arm_linux_remove_watchpoint (struct target_ops *self, CORE_ADDR addr,
- int len, enum target_hw_bp_type rw,
- struct expression *cond)
+int
+arm_linux_nat_target::remove_watchpoint (CORE_ADDR addr,
+ int len, enum target_hw_bp_type rw,
+ struct expression *cond)
{
struct lwp_info *lp;
struct arm_linux_hw_breakpoint p;
}
/* What was the data address the target was stopped on accessing. */
-static int
-arm_linux_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p)
+bool
+arm_linux_nat_target::stopped_data_address (CORE_ADDR *addr_p)
{
siginfo_t siginfo;
int slot;
if (!linux_nat_get_siginfo (inferior_ptid, &siginfo))
- return 0;
+ return false;
/* This must be a hardware breakpoint. */
if (siginfo.si_signo != SIGTRAP
|| (siginfo.si_code & 0xffff) != 0x0004 /* TRAP_HWBKPT */)
- return 0;
+ return false;
/* We must be able to set hardware watchpoints. */
if (arm_linux_get_hw_watchpoint_count () == 0)
/* If we are in a positive slot then we're looking at a breakpoint and not
a watchpoint. */
if (slot >= 0)
- return 0;
+ return false;
*addr_p = (CORE_ADDR) (uintptr_t) siginfo.si_addr;
- return 1;
+ return true;
}
/* Has the target been stopped by hitting a watchpoint? */
-static int
-arm_linux_stopped_by_watchpoint (struct target_ops *ops)
+bool
+arm_linux_nat_target::stopped_by_watchpoint ()
{
CORE_ADDR addr;
- return arm_linux_stopped_data_address (ops, &addr);
+ return stopped_data_address (&addr);
}
-static int
-arm_linux_watchpoint_addr_within_range (struct target_ops *target,
- CORE_ADDR addr,
- CORE_ADDR start, int length)
+bool
+arm_linux_nat_target::watchpoint_addr_within_range (CORE_ADDR addr,
+ CORE_ADDR start,
+ int length)
{
return start <= addr && start + length - 1 >= addr;
}
/* Handle thread creation. We need to copy the breakpoints and watchpoints
in the parent thread to the child thread. */
-static void
-arm_linux_new_thread (struct lwp_info *lp)
+void
+arm_linux_nat_target::low_new_thread (struct lwp_info *lp)
{
int i;
struct arch_lwp_info *info = XCNEW (struct arch_lwp_info);
lp->arch_private = info;
}
+/* Function to call when a thread is being deleted. */
+
+void
+arm_linux_nat_target::low_delete_thread (struct arch_lwp_info *arch_lwp)
+{
+ xfree (arch_lwp);
+}
+
/* Called when resuming a thread.
The hardware debug registers are updated when there is any change. */
-static void
-arm_linux_prepare_to_resume (struct lwp_info *lwp)
+void
+arm_linux_nat_target::low_prepare_to_resume (struct lwp_info *lwp)
{
int pid, i;
struct arm_linux_hw_breakpoint *bpts, *wpts;
/* linux_nat_new_fork hook. */
-static void
-arm_linux_new_fork (struct lwp_info *parent, pid_t child_pid)
+void
+arm_linux_nat_target::low_new_fork (struct lwp_info *parent, pid_t child_pid)
{
pid_t parent_pid;
struct arm_linux_debug_reg_state *parent_state;
*child_state = *parent_state;
}
-void _initialize_arm_linux_nat (void);
-
void
_initialize_arm_linux_nat (void)
{
- struct target_ops *t;
-
- /* 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;
-
- /* Add our hardware breakpoint and watchpoint implementation. */
- t->to_can_use_hw_breakpoint = arm_linux_can_use_hw_breakpoint;
- t->to_insert_hw_breakpoint = arm_linux_insert_hw_breakpoint;
- t->to_remove_hw_breakpoint = arm_linux_remove_hw_breakpoint;
- t->to_region_ok_for_hw_watchpoint = arm_linux_region_ok_for_hw_watchpoint;
- t->to_insert_watchpoint = arm_linux_insert_watchpoint;
- t->to_remove_watchpoint = arm_linux_remove_watchpoint;
- t->to_stopped_by_watchpoint = arm_linux_stopped_by_watchpoint;
- t->to_stopped_data_address = arm_linux_stopped_data_address;
- t->to_watchpoint_addr_within_range = arm_linux_watchpoint_addr_within_range;
-
- t->to_read_description = arm_linux_read_description;
-
/* Register the target. */
- linux_nat_add_target (t);
-
- /* Handle thread creation and exit. */
- linux_nat_set_new_thread (t, arm_linux_new_thread);
- linux_nat_set_prepare_to_resume (t, arm_linux_prepare_to_resume);
-
- /* Handle process creation and exit. */
- linux_nat_set_new_fork (t, arm_linux_new_fork);
- linux_nat_set_forget_process (t, arm_linux_forget_process);
+ linux_target = &the_arm_linux_nat_target;
+ add_inf_child_target (&the_arm_linux_nat_target);
}
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