#define PTRACE_GET_THREAD_AREA 25
#endif
+/* Linux target op definitions for the NIOS II architecture. */
+
+class nios2_target : public linux_process_target
+{
+public:
+
+ const regs_info *get_regs_info () override;
+
+ const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
+
+protected:
+
+ void low_arch_setup () override;
+
+ bool low_cannot_fetch_register (int regno) override;
+
+ bool low_cannot_store_register (int regno) override;
+
+ bool low_supports_breakpoints () override;
+
+ CORE_ADDR low_get_pc (regcache *regcache) override;
+
+ void low_set_pc (regcache *regcache, CORE_ADDR newpc) override;
+
+ bool low_breakpoint_at (CORE_ADDR pc) override;
+};
+
+/* The singleton target ops object. */
+
+static nios2_target the_nios2_target;
+
+bool
+nios2_target::low_supports_breakpoints ()
+{
+ return true;
+}
+
+CORE_ADDR
+nios2_target::low_get_pc (regcache *regcache)
+{
+ return linux_get_pc_32bit (regcache);
+}
+
+void
+nios2_target::low_set_pc (regcache *regcache, CORE_ADDR pc)
+{
+ linux_set_pc_32bit (regcache, pc);
+}
+
/* The following definition must agree with the number of registers
defined in "struct user_regs" in GLIBC
(sysdeps/unix/sysv/linux/nios2/sys/user.h), and also with
0
};
-/* Implement the arch_setup linux_target_ops method. */
+/* Implement the low_arch_setup linux target ops method. */
-static void
-nios2_arch_setup (void)
+void
+nios2_target::low_arch_setup ()
{
current_process ()->tdesc = tdesc_nios2_linux;
}
-/* Implement the cannot_fetch_register linux_target_ops method. */
+/* Implement the low_cannot_fetch_register linux target ops method. */
-static int
-nios2_cannot_fetch_register (int regno)
+bool
+nios2_target::low_cannot_fetch_register (int regno)
{
- if (nios2_regmap[regno] == -1)
- return 1;
-
- return 0;
+ return (nios2_regmap[regno] == -1);
}
-/* Implement the cannot_store_register linux_target_ops method. */
+/* Implement the low_cannot_store_register linux target ops method. */
-static int
-nios2_cannot_store_register (int regno)
+bool
+nios2_target::low_cannot_store_register (int regno)
{
- if (nios2_regmap[regno] == -1)
- return 1;
-
- return 0;
+ return (nios2_regmap[regno] == -1);
}
/* Breakpoint support. Also see comments on nios2_breakpoint_from_pc
static const unsigned int nios2_breakpoint = NIOS2_BREAKPOINT;
#define nios2_breakpoint_len 4
-/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
+/* Implementation of target ops method "sw_breakpoint_from_kind". */
-static const gdb_byte *
-nios2_sw_breakpoint_from_kind (int kind, int *size)
+const gdb_byte *
+nios2_target::sw_breakpoint_from_kind (int kind, int *size)
{
*size = nios2_breakpoint_len;
return (const gdb_byte *) &nios2_breakpoint;
}
-/* Implement the breakpoint_at linux_target_ops method. */
+/* Implement the low_breakpoint_at linux target ops method. */
-static int
-nios2_breakpoint_at (CORE_ADDR where)
+bool
+nios2_target::low_breakpoint_at (CORE_ADDR where)
{
unsigned int insn;
/* For R2, first check for the 2-byte CDX trap.n breakpoint encoding. */
#if defined(__nios2_arch__) && __nios2_arch__ == 2
- (*the_target->read_memory) (where, (unsigned char *) &insn, 2);
+ read_memory (where, (unsigned char *) &insn, 2);
if (insn == CDX_BREAKPOINT)
- return 1;
+ return true;
#endif
- (*the_target->read_memory) (where, (unsigned char *) &insn, 4);
+ read_memory (where, (unsigned char *) &insn, 4);
if (insn == nios2_breakpoint)
- return 1;
- return 0;
+ return true;
+ return false;
}
/* Fetch the thread-local storage pointer for libthread_db. */
nios2_regmap,
};
-static struct regs_info regs_info =
+static struct regs_info myregs_info =
{
NULL, /* regset_bitmap */
&nios2_usrregs_info,
&nios2_regsets_info
};
-static const struct regs_info *
-nios2_regs_info (void)
+const regs_info *
+nios2_target::get_regs_info ()
{
- return ®s_info;
+ return &myregs_info;
}
-struct linux_target_ops the_low_target =
-{
- nios2_arch_setup,
- nios2_regs_info,
- nios2_cannot_fetch_register,
- nios2_cannot_store_register,
- NULL,
- linux_get_pc_32bit,
- linux_set_pc_32bit,
- NULL, /* breakpoint_kind_from_pc */
- nios2_sw_breakpoint_from_kind,
- NULL, /* get_next_pcs */
- 0,
- nios2_breakpoint_at,
-};
+/* The linux target ops object. */
+
+linux_process_target *the_linux_target = &the_nios2_target;
void
initialize_low_arch (void)