Update release making notes.

[deliverable/binutils-gdb.git] / gdb / gdbserver / linux-crisv32-low.c

diff --git a/gdb/gdbserver/linux-crisv32-low.c b/gdb/gdbserver/linux-crisv32-low.c
index aaefe50f8d291b6388ae7b546530c0c60e2955fd..facb5c5c274be16e091ea16ff6d154472dfa89f9 100644 (file)
--- a/gdb/gdbserver/linux-crisv32-low.c
+++ b/gdb/gdbserver/linux-crisv32-low.c
@@ -1,5 +1,5 @@
 /* GNU/Linux/CRIS specific low level interface, for the remote server for GDB.
-   Copyright (C) 1995-2014 Free Software Foundation, Inc.
+   Copyright (C) 1995-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -18,7 +18,7 @@
 
 #include "server.h"
 #include "linux-low.h"
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
 
 /* Defined in auto-generated file reg-crisv32.c.  */
 void init_registers_crisv32 (void);
@@ -55,28 +55,18 @@ static int cris_regmap[] = {
 
 };
 
-extern int debug_threads;
+static const unsigned short cris_breakpoint = 0xe938;
+#define cris_breakpoint_len 2
 
-static CORE_ADDR
-cris_get_pc (struct regcache *regcache)
-{
-  unsigned long pc;
-  collect_register_by_name (regcache, "pc", &pc);
-  if (debug_threads)
-    debug_printf ("stop pc is %08lx\n", pc);
-  return pc;
-}
+/* Implementation of linux_target_ops method "sw_breakpoint_from_kind".  */
 
-static void
-cris_set_pc (struct regcache *regcache, CORE_ADDR pc)
+static const gdb_byte *
+cris_sw_breakpoint_from_kind (int kind, int *size)
 {
-  unsigned long newpc = pc;
-  supply_register_by_name (regcache, "pc", &newpc);
+  *size = cris_breakpoint_len;
+  return (const gdb_byte *) &cris_breakpoint;
 }
 
-static const unsigned short cris_breakpoint = 0xe938;
-#define cris_breakpoint_len 2
-
 static int
 cris_breakpoint_at (CORE_ADDR where)
 {
@@ -92,23 +82,6 @@ cris_breakpoint_at (CORE_ADDR where)
   return 0;
 }
 
-/* We only place breakpoints in empty marker functions, and thread locking
-   is outside of the function.  So rather than importing software single-step,
-   we can just run until exit.  */
-
-/* FIXME: This function should not be needed, since we have PTRACE_SINGLESTEP
-   for CRISv32.  Without it, td_ta_event_getmsg in thread_db_create_event
-   will fail when debugging multi-threaded applications.  */
-
-static CORE_ADDR
-cris_reinsert_addr (void)
-{
-  struct regcache *regcache = get_thread_regcache (current_thread, 1);
-  unsigned long pc;
-  collect_register_by_name (regcache, "srp", &pc);
-  return pc;
-}
-
 static void
 cris_write_data_breakpoint (struct regcache *regcache,
                            int bp, unsigned long start, unsigned long end)
@@ -336,7 +309,7 @@ cris_stopped_data_address (void)
 }
 
 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)
@@ -379,10 +352,18 @@ cris_arch_setup (void)
   current_process ()->tdesc = tdesc_crisv32;
 }
 
+/* Support for hardware single step.  */
+
+static int
+cris_supports_hardware_single_step (void)
+{
+  return 1;
+}
+
 static struct regset_info cris_regsets[] = {
   { PTRACE_GETREGS, PTRACE_SETREGS, 0, cris_num_regs * 4,
     GENERAL_REGS, cris_fill_gregset, cris_store_gregset },
-  { 0, 0, 0, -1, -1, NULL, NULL }
+  NULL_REGSET
 };
 
 
@@ -418,11 +399,11 @@ struct linux_target_ops the_low_target = {
   NULL,
   NULL,
   NULL, /* fetch_register */
-  cris_get_pc,
-  cris_set_pc,
-  (const unsigned char *) &cris_breakpoint,
-  cris_breakpoint_len,
-  cris_reinsert_addr,
+  linux_get_pc_32bit,
+  linux_set_pc_32bit,
+  NULL, /* breakpoint_kind_from_pc */
+  cris_sw_breakpoint_from_kind,
+  NULL, /* get_next_pcs */
   0,
   cris_breakpoint_at,
   cris_supports_z_point_type,
@@ -430,6 +411,24 @@ struct linux_target_ops the_low_target = {
   cris_remove_point,
   cris_stopped_by_watchpoint,
   cris_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 */
+  cris_supports_hardware_single_step,
 };
 
 void