Remove register keyword from public header files

The following code

  void f(void)
  {
    register int i;
  }

gives a warning with GCC and -std=c++17

  test.cc: In function ‘void f()’:
  test.cc:3:15: warning: ISO C++1z does not allow ‘register’ storage class
  specifier [-Wregister]
    register int i;
		       ^

and clang with -std=c++14

  test.cc:3:3: warning: 'register' storage class specifier is deprecated
  and incompatible with C++1z [-Wdeprecated-register]
    register int i;
    ^~~~~~~~~
  1 warning generated.

Remove the use of the register keyword at least in the public header
files for C++ compatibility.

Close #3397.

1 files changed, 8 insertions, 8 deletions

diff --git a/cpukit/score/cpu/mips/include/rtems/score/mips.h b/cpukit/score/cpu/mips/include/rtems/score/mips.h
index 4c2c53fa6d..3b6115e9b6 100644
--- a/cpukit/score/cpu/mips/include/rtems/score/mips.h
+++ b/cpukit/score/cpu/mips/include/rtems/score/mips.h
@@ -136,7 +136,7 @@ extern "C" {
 
 #define mips_set_sr( _x ) \
   do { \
-    register unsigned int __x = (_x); \
+    unsigned int __x = (_x); \
     __asm__ volatile( "mtc0 %0, $12; nop" : : "r" (__x) ); \
   } while (0)
 
@@ -153,7 +153,7 @@ extern "C" {
 
 #define mips_set_cause( _x ) \
   do { \
-    register unsigned int __x = (_x); \
+    unsigned int __x = (_x); \
     __asm__ volatile( "mtc0 %0, $13; nop" : : "r" (__x) ); \
   } while (0)
 
@@ -172,7 +172,7 @@ extern "C" {
 
 #define mips_set_dcic( _x ) \
   do { \
-    register unsigned int __x = (_x); \
+    unsigned int __x = (_x); \
     __asm__ volatile( "mtc0 %0, $7; nop" : : "r" (__x) ); \
   } while (0)
 
@@ -193,8 +193,8 @@ extern "C" {
 
 #define mips_set_bpcrm( _x, _y ) \
   do { \
-    register unsigned int __x = (_x); \
-    register unsigned int __y = (_y); \
+    unsigned int __x = (_x); \
+    unsigned int __y = (_y); \
     __asm__ volatile( "mtc0 %0, $11; nop" : : "r" (__y) ); \
     __asm__ volatile( "mtc0 %0, $3; nop" : : "r" (__x) ); \
   } while (0)
@@ -218,8 +218,8 @@ extern "C" {
 
 #define mips_set_bdarm( _x, _y ) \
   do { \
-    register unsigned int __x = (_x); \
-    register unsigned int __y = (_y); \
+    unsigned int __x = (_x); \
+    unsigned int __y = (_y); \
     __asm__ volatile( "mtc0 %0, $9; nop" : : "r" (__y) ); \
     __asm__ volatile( "mtc0 %0, $5; nop" : : "r" (__x) ); \
   } while (0)
@@ -244,7 +244,7 @@ extern "C" {
 
 #define mips_set_fcr31( _x ) \
   do { \
-    register unsigned int __x = (_x); \
+    unsigned int __x = (_x); \
     __asm__ volatile( "ctc1 %0, $31; nop" : : "r" (__x) ); \
   } while(0)