target_ops: Use bool throughout

After the previous target_ops/C++ patches are all squashed and merged,
this one can go in separately.

This patch adjusts all the target methods to return bool instead of int
when they're returning a boolean.

gdb/ChangeLog:
2018-05-02  Pedro Alves  <palves@redhat.com>

	* target.h (target_ops)
	<stopped_by_sw_breakpoint, supports_stopped_by_sw_breakpoint,
	stopped_by_hw_breakpoint, supports_stopped_by_hw_breakpoint,
	stopped_by_watchpoint, have_continuable_watchpoint,
	stopped_data_address, watchpoint_addr_within_range,
	can_accel_watchpoint_condition, can_run, thread_alive,
	has_all_memory, has_memory, has_stack, has_registers,
	has_execution, can_async_p, is_async_p, supports_non_stop,
	always_non_stop_p, can_execute_reverse, supports_multi_process,
	supports_enable_disable_tracepoint,
	supports_disable_randomization, supports_string_tracing,
	supports_evaluation_of_breakpoint_conditions,
	can_run_breakpoint_commands, filesystem_is_local,
	can_download_tracepoint, get_trace_state_variable_value,
	set_trace_notes, get_tib_address, use_agent, can_use_agent,
	record_is_replaying, record_will_replay,
	augmented_libraries_svr4_read>: Adjust to return bool.
	* aarch64-linux-nat.c: All implementations adjusted.
	* aix-thread.c: All implementations adjusted.
	* arm-linux-nat.c: All implementations adjusted.
	* breakpoint.c: All implementations adjusted.
	* bsd-kvm.c: All implementations adjusted.
	* bsd-uthread.c: All implementations adjusted.
	* corelow.c: All implementations adjusted.
	* ctf.c: All implementations adjusted.
	* darwin-nat.c: All implementations adjusted.
	* darwin-nat.h: All implementations adjusted.
	* exec.c: All implementations adjusted.
	* fbsd-nat.c: All implementations adjusted.
	* fbsd-nat.h: All implementations adjusted.
	* gnu-nat.c: All implementations adjusted.
	* gnu-nat.h: All implementations adjusted.
	* go32-nat.c: All implementations adjusted.
	* ia64-linux-nat.c: All implementations adjusted.
	* inf-child.c: All implementations adjusted.
	* inf-child.h: All implementations adjusted.
	* inf-ptrace.c: All implementations adjusted.
	* inf-ptrace.h: All implementations adjusted.
	* linux-nat.c: All implementations adjusted.
	* linux-nat.h: All implementations adjusted.
	* mips-linux-nat.c: All implementations adjusted.
	* nto-procfs.c: All implementations adjusted.
	* ppc-linux-nat.c: All implementations adjusted.
	* procfs.c: All implementations adjusted.
	* ravenscar-thread.c: All implementations adjusted.
	* record-btrace.c: All implementations adjusted.
	* record-full.c: All implementations adjusted.
	* remote-sim.c: All implementations adjusted.
	* remote.c: All implementations adjusted.
	* s390-linux-nat.c: All implementations adjusted.
	* sol-thread.c: All implementations adjusted.
	* spu-multiarch.c: All implementations adjusted.
	* target-delegates.c: All implementations adjusted.
	* target.c: All implementations adjusted.
	* target.h: All implementations adjusted.
	* tracefile-tfile.c: All implementations adjusted.
	* tracefile.c: All implementations adjusted.
	* tracefile.h: All implementations adjusted.
	* windows-nat.c: All implementations adjusted.
	* x86-linux-nat.h: All implementations adjusted.
	* x86-nat.h: All implementations adjusted.

1 files changed, 10 insertions, 10 deletions

diff --git a/gdb/aarch64-linux-nat.c b/gdb/aarch64-linux-nat.c
index 63276ec..86b4cf1 100644
--- a/gdb/aarch64-linux-nat.c
+++ b/gdb/aarch64-linux-nat.c
@@ -67,9 +67,9 @@ public:
 			 struct expression *) override;
   int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
 			 struct expression *) override;
-  int stopped_by_watchpoint () override;
-  int stopped_data_address (CORE_ADDR *) override;
-  int watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override;
+  bool stopped_by_watchpoint () override;
+  bool stopped_data_address (CORE_ADDR *) override;
+  bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override;
 
   int can_do_single_step () override;
 
@@ -733,7 +733,7 @@ aarch64_linux_nat_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
 
 /* Implement the "stopped_data_address" target_ops method.  */
 
-int
+bool
 aarch64_linux_nat_target::stopped_data_address (CORE_ADDR *addr_p)
 {
   siginfo_t siginfo;
@@ -741,12 +741,12 @@ aarch64_linux_nat_target::stopped_data_address (CORE_ADDR *addr_p)
   struct aarch64_debug_reg_state *state;
 
   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) != TRAP_HWBKPT)
-    return 0;
+    return false;
 
   /* Check if the address matches any watched address.  */
   state = aarch64_get_debug_reg_state (ptid_get_pid (inferior_ptid));
@@ -762,16 +762,16 @@ aarch64_linux_nat_target::stopped_data_address (CORE_ADDR *addr_p)
 	  && addr_trap < addr_watch + len)
 	{
 	  *addr_p = addr_trap;
-	  return 1;
+	  return true;
 	}
     }
 
-  return 0;
+  return false;
 }
 
 /* Implement the "stopped_by_watchpoint" target_ops method.  */
 
-int
+bool
 aarch64_linux_nat_target::stopped_by_watchpoint ()
 {
   CORE_ADDR addr;
@@ -781,7 +781,7 @@ aarch64_linux_nat_target::stopped_by_watchpoint ()
 
 /* Implement the "watchpoint_addr_within_range" target_ops method.  */
 
-int
+bool
 aarch64_linux_nat_target::watchpoint_addr_within_range (CORE_ADDR addr,
 							CORE_ADDR start, int length)
 {