/* GNU/Linux/m68k specific low level interface, for the remote server for GDB.
- Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1995-2019 Free Software Foundation, Inc.
This file is part of GDB.
/* Defined in auto-generated file reg-m68k.c. */
void init_registers_m68k (void);
+extern const struct target_desc *tdesc_m68k;
#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#ifdef HAVE_PTRACE_GETREGS
#include <sys/procfs.h>
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
static void
-m68k_fill_gregset (void *buf)
+m68k_fill_gregset (struct regcache *regcache, void *buf)
{
int i;
for (i = 0; i < m68k_num_gregs; i++)
- collect_register (i, (char *) buf + m68k_regmap[i]);
+ collect_register (regcache, i, (char *) buf + m68k_regmap[i]);
}
static void
-m68k_store_gregset (const void *buf)
+m68k_store_gregset (struct regcache *regcache, const void *buf)
{
int i;
for (i = 0; i < m68k_num_gregs; i++)
- supply_register (i, (const char *) buf + m68k_regmap[i]);
+ supply_register (regcache, i, (const char *) buf + m68k_regmap[i]);
}
static void
-m68k_fill_fpregset (void *buf)
+m68k_fill_fpregset (struct regcache *regcache, void *buf)
{
int i;
for (i = m68k_num_gregs; i < m68k_num_regs; i++)
- collect_register (i, ((char *) buf
- + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
+ collect_register (regcache, i, ((char *) buf
+ + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
}
static void
-m68k_store_fpregset (const void *buf)
+m68k_store_fpregset (struct regcache *regcache, const void *buf)
{
int i;
for (i = m68k_num_gregs; i < m68k_num_regs; i++)
- supply_register (i, ((const char *) buf
+ supply_register (regcache, i, ((const char *) buf
+ (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
}
#endif /* HAVE_PTRACE_GETREGS */
-struct regset_info target_regsets[] = {
+static struct regset_info m68k_regsets[] = {
#ifdef HAVE_PTRACE_GETREGS
- { PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
+ { PTRACE_GETREGS, PTRACE_SETREGS, 0, sizeof (elf_gregset_t),
GENERAL_REGS,
m68k_fill_gregset, m68k_store_gregset },
- { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
+ { PTRACE_GETFPREGS, PTRACE_SETFPREGS, 0, sizeof (elf_fpregset_t),
FP_REGS,
m68k_fill_fpregset, m68k_store_fpregset },
#endif /* HAVE_PTRACE_GETREGS */
- { 0, 0, -1, -1, NULL, NULL }
+ NULL_REGSET
};
-static const unsigned char m68k_breakpoint[] = { 0x4E, 0x4F };
+static const gdb_byte m68k_breakpoint[] = { 0x4E, 0x4F };
#define m68k_breakpoint_len 2
-static CORE_ADDR
-m68k_get_pc ()
-{
- unsigned long pc;
-
- collect_register_by_name ("pc", &pc);
- return pc;
-}
+/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
-static void
-m68k_set_pc (CORE_ADDR value)
+static const gdb_byte *
+m68k_sw_breakpoint_from_kind (int kind, int *size)
{
- unsigned long newpc = value;
-
- supply_register_by_name ("pc", &newpc);
+ *size = m68k_breakpoint_len;
+ return m68k_breakpoint;
}
static int
return 0;
}
+#include <asm/ptrace.h>
+
+#ifdef PTRACE_GET_THREAD_AREA
+/* Fetch the thread-local storage pointer for libthread_db. */
+
+ps_err_e
+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_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;
+}
+#endif /* PTRACE_GET_THREAD_AREA */
+
+static struct regsets_info m68k_regsets_info =
+ {
+ m68k_regsets, /* regsets */
+ 0, /* num_regsets */
+ NULL, /* disabled_regsets */
+ };
+
+static struct usrregs_info m68k_usrregs_info =
+ {
+ m68k_num_regs,
+ m68k_regmap,
+ };
+
+static struct regs_info regs_info =
+ {
+ NULL, /* regset_bitmap */
+ &m68k_usrregs_info,
+ &m68k_regsets_info
+ };
+
+static const struct regs_info *
+m68k_regs_info (void)
+{
+ return ®s_info;
+}
+
+static void
+m68k_arch_setup (void)
+{
+ current_process ()->tdesc = tdesc_m68k;
+}
+
+/* Support for hardware single step. */
+
+static int
+m68k_supports_hardware_single_step (void)
+{
+ return 1;
+}
+
struct linux_target_ops the_low_target = {
- init_registers_m68k,
- m68k_num_regs,
- m68k_regmap,
+ m68k_arch_setup,
+ m68k_regs_info,
m68k_cannot_fetch_register,
m68k_cannot_store_register,
- m68k_get_pc,
- m68k_set_pc,
- m68k_breakpoint,
- m68k_breakpoint_len,
+ NULL, /* fetch_register */
+ linux_get_pc_32bit,
+ linux_set_pc_32bit,
+ NULL, /* breakpoint_kind_from_pc */
+ m68k_sw_breakpoint_from_kind,
NULL,
2,
m68k_breakpoint_at,
+ NULL, /* supports_z_point_type */
+ NULL, /* insert_point */
+ NULL, /* remove_point */
+ NULL, /* stopped_by_watchpoint */
+ NULL, /* stopped_data_address */
+ NULL, /* collect_ptrace_register */
+ NULL, /* supply_ptrace_register */
+ NULL, /* siginfo_fixup */
+ NULL, /* new_process */
+ NULL, /* delete_process */
+ NULL, /* new_thread */
+ NULL, /* delete_thread */
+ NULL, /* new_fork */
+ NULL, /* prepare_to_resume */
+ NULL, /* process_qsupported */
+ NULL, /* supports_tracepoints */
+ NULL, /* get_thread_area */
+ NULL, /* install_fast_tracepoint_jump_pad */
+ NULL, /* emit_ops */
+ NULL, /* get_min_fast_tracepoint_insn_len */
+ NULL, /* supports_range_stepping */
+ NULL, /* breakpoint_kind_from_current_state */
+ m68k_supports_hardware_single_step,
};
+
+void
+initialize_low_arch (void)
+{
+ /* Initialize the Linux target descriptions. */
+ init_registers_m68k ();
+
+ initialize_regsets_info (&m68k_regsets_info);
+}
projects / deliverable / binutils-gdb.git / blobdiff