#define PPC_LI(insn) (PPC_SEXT (PPC_FIELD (insn, 6, 24), 24) << 2)
#define PPC_BD(insn) (PPC_SEXT (PPC_FIELD (insn, 16, 14), 14) << 2)
+/* Linux target op definitions for the PowerPC architecture. */
+
+class ppc_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;
+
+ bool supports_z_point_type (char z_type) 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 ppc_target the_ppc_target;
+
/* Holds the AT_HWCAP auxv entry. */
static unsigned long ppc_hwcap;
return 0;
}
-static int
-ppc_cannot_store_register (int regno)
+bool
+ppc_target::low_cannot_store_register (int regno)
{
const struct target_desc *tdesc = current_process ()->tdesc;
/* Some kernels do not allow us to store fpscr. */
if (!(ppc_hwcap & PPC_FEATURE_HAS_SPE)
&& regno == find_regno (tdesc, "fpscr"))
- return 2;
+ return true;
#endif
/* Some kernels do not allow us to store orig_r3 or trap. */
if (regno == find_regno (tdesc, "orig_r3")
|| regno == find_regno (tdesc, "trap"))
- return 2;
+ return true;
- return 0;
+ return false;
}
-static int
-ppc_cannot_fetch_register (int regno)
+bool
+ppc_target::low_cannot_fetch_register (int regno)
{
- return 0;
+ return false;
}
static void
perror_with_name ("Unexpected byte order");
}
-static CORE_ADDR
-ppc_get_pc (struct regcache *regcache)
+bool
+ppc_target::low_supports_breakpoints ()
+{
+ return true;
+}
+
+CORE_ADDR
+ppc_target::low_get_pc (regcache *regcache)
{
if (register_size (regcache->tdesc, 0) == 4)
{
}
}
-static void
-ppc_set_pc (struct regcache *regcache, CORE_ADDR pc)
+void
+ppc_target::low_set_pc (regcache *regcache, CORE_ADDR pc)
{
if (register_size (regcache->tdesc, 0) == 4)
{
static const unsigned int ppc_breakpoint = 0x7d821008;
#define ppc_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 *
-ppc_sw_breakpoint_from_kind (int kind, int *size)
+const gdb_byte *
+ppc_target::sw_breakpoint_from_kind (int kind, int *size)
{
*size = ppc_breakpoint_len;
return (const gdb_byte *) &ppc_breakpoint;
}
-static int
-ppc_breakpoint_at (CORE_ADDR where)
+bool
+ppc_target::low_breakpoint_at (CORE_ADDR where)
{
unsigned int insn;
- the_target->pt->read_memory (where, (unsigned char *) &insn, 4);
+ read_memory (where, (unsigned char *) &insn, 4);
if (insn == ppc_breakpoint)
- return 1;
+ return true;
/* If necessary, recognize more trap instructions here. GDB only uses
the one. */
- return 0;
+ return false;
}
/* Implement supports_z_point_type target-ops.
Handling software breakpoint at server side, so tracepoints
and breakpoints can be inserted at the same location. */
-static int
-ppc_supports_z_point_type (char z_type)
+bool
+ppc_target::supports_z_point_type (char z_type)
{
switch (z_type)
{
case Z_PACKET_SW_BP:
- return 1;
+ return true;
case Z_PACKET_HW_BP:
case Z_PACKET_WRITE_WP:
case Z_PACKET_ACCESS_WP:
default:
- return 0;
+ return false;
}
}
NULL, /* disabled_regsets */
};
-static struct regs_info regs_info =
+static struct regs_info myregs_info =
{
NULL, /* regset_bitmap */
&ppc_usrregs_info,
&ppc_regsets_info
};
-static const struct regs_info *
-ppc_regs_info (void)
+const regs_info *
+ppc_target::get_regs_info ()
{
- return ®s_info;
+ return &myregs_info;
}
-static void
-ppc_arch_setup (void)
+void
+ppc_target::low_arch_setup ()
{
const struct target_desc *tdesc;
struct regset_info *regset;
}
struct linux_target_ops the_low_target = {
- ppc_arch_setup,
- ppc_regs_info,
- ppc_cannot_fetch_register,
- ppc_cannot_store_register,
- NULL, /* fetch_register */
- ppc_get_pc,
- ppc_set_pc,
- NULL, /* breakpoint_kind_from_pc */
- ppc_sw_breakpoint_from_kind,
- NULL,
- 0,
- ppc_breakpoint_at,
- ppc_supports_z_point_type,
ppc_insert_point,
ppc_remove_point,
NULL,
ppc_emit_ops,
ppc_get_min_fast_tracepoint_insn_len,
NULL, /* supports_range_stepping */
- NULL, /* breakpoint_kind_from_current_state */
ppc_supports_hardware_single_step,
NULL, /* get_syscall_trapinfo */
ppc_get_ipa_tdesc_idx,
};
+/* The linux target ops object. */
+
+linux_process_target *the_linux_target = &the_ppc_target;
+
void
initialize_low_arch (void)
{