Revert "gdbserver: convert have_ptrace_getregset to a tribool"

This reverts commit 5920765d75.

gdbserver/linux-arm-low.cc

@@ -1007,9 +1007,9 @@ arm_target::low_arch_setup ()
 
   /* Check if PTRACE_GETREGSET works.  */
   if (ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iov) == 0)
-    have_ptrace_getregset = TRIBOOL_TRUE;
+    have_ptrace_getregset = 1;
   else
-    have_ptrace_getregset = TRIBOOL_FALSE;
+    have_ptrace_getregset = 0;
 }
 
 bool
@@ -1122,7 +1122,7 @@ arm_target::get_regs_info ()
 {
   const struct target_desc *tdesc = current_process ()->tdesc;
 
-  if (have_ptrace_getregset == TRIBOOL_TRUE
+  if (have_ptrace_getregset == 1
       && (is_aarch32_linux_description (tdesc)
 	  || arm_linux_get_tdesc_fp_type (tdesc) == ARM_FP_TYPE_VFPV3))
     return &regs_info_aarch32;

gdbserver/linux-low.cc

@@ -135,7 +135,7 @@ typedef struct
 #endif
 
 /* Does the current host support PTRACE_GETREGSET?  */
-enum tribool have_ptrace_getregset = TRIBOOL_UNKNOWN;
+int have_ptrace_getregset = -1;
 
 /* Return TRUE if THREAD is the leader thread of the process.  */
 

gdbserver/linux-low.h

@@ -951,7 +951,7 @@ void thread_db_notice_clone (struct thread_info *parent_thr, ptid_t child_ptid);
 
 bool thread_db_thread_handle (ptid_t ptid, gdb_byte **handle, int *handle_len);
 
-extern enum tribool have_ptrace_getregset;
+extern int have_ptrace_getregset;
 
 /* Search for the value with type MATCH in the auxv vector, with entries of
    length WORDSIZE bytes, of process with pid PID.  If found, store the

gdbserver/linux-x86-low.cc

@@ -899,7 +899,7 @@ x86_linux_read_description (void)
       if (ptrace (PTRACE_GETFPXREGS, tid, 0, (long) &fpxregs) < 0)
 	{
 	  have_ptrace_getfpxregs = 0;
-	  have_ptrace_getregset = TRIBOOL_FALSE;
+	  have_ptrace_getregset = 0;
 	  return i386_linux_read_description (X86_XSTATE_X87);
 	}
       else
@@ -918,7 +918,7 @@ x86_linux_read_description (void)
 	return tdesc_i386_linux_no_xml.get ();
     }
 
-  if (have_ptrace_getregset == TRIBOOL_UNKNOWN)
+  if (have_ptrace_getregset == -1)
     {
       uint64_t xstateregs[(X86_XSTATE_SSE_SIZE / sizeof (uint64_t))];
       struct iovec iov;
@@ -929,10 +929,10 @@ x86_linux_read_description (void)
       /* Check if PTRACE_GETREGSET works.  */
       if (ptrace (PTRACE_GETREGSET, tid,
 		  (unsigned int) NT_X86_XSTATE, (long) &iov) < 0)
-	have_ptrace_getregset = TRIBOOL_FALSE;
+	have_ptrace_getregset = 0;
       else
 	{
-	  have_ptrace_getregset = TRIBOOL_TRUE;
+	  have_ptrace_getregset = 1;
 
 	  /* Get XCR0 from XSAVE extended state.  */
 	  xcr0 = xstateregs[(I386_LINUX_XSAVE_XCR0_OFFSET
@@ -955,7 +955,7 @@ x86_linux_read_description (void)
     }
 
   /* Check the native XCR0 only if PTRACE_GETREGSET is available.  */
-  xcr0_features = (have_ptrace_getregset == TRIBOOL_TRUE
+  xcr0_features = (have_ptrace_getregset
 		   && (xcr0 & X86_XSTATE_ALL_MASK));
 
   if (xcr0_features)