kernel: syscalls: Change handlers namespace

According C99 the first 31 characters of an identifier must be unique.
Shortening the namespace of the generated objects to achieve it.

C99 - 5.2.4.1
MISRA-C rule 5.1

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>

kernel/include/syscall_handler.h

@@ -496,7 +496,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
  */
 
 #define __SYSCALL_HANDLER0(name_) \
-	u32_t _handler_ ## name_(u32_t arg1 __unused, \
+	u32_t hdlr_ ## name_(u32_t arg1 __unused, \
 				 u32_t arg2 __unused, \
 				 u32_t arg3 __unused, \
 				 u32_t arg4 __unused, \
@@ -505,7 +505,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
 				 void *ssf)
 
 #define __SYSCALL_HANDLER1(name_, arg1_) \
-	u32_t _handler_ ## name_(u32_t arg1_, \
+	u32_t hdlr_ ## name_(u32_t arg1_, \
 				 u32_t arg2 __unused, \
 				 u32_t arg3 __unused, \
 				 u32_t arg4 __unused, \
@@ -514,7 +514,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
 				 void *ssf)
 
 #define __SYSCALL_HANDLER2(name_, arg1_, arg2_) \
-	u32_t _handler_ ## name_(u32_t arg1_, \
+	u32_t hdlr_ ## name_(u32_t arg1_, \
 				 u32_t arg2_, \
 				 u32_t arg3 __unused, \
 				 u32_t arg4 __unused, \
@@ -523,7 +523,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
 				 void *ssf)
 
 #define __SYSCALL_HANDLER3(name_, arg1_, arg2_, arg3_) \
-	u32_t _handler_ ## name_(u32_t arg1_, \
+	u32_t hdlr_ ## name_(u32_t arg1_, \
 				 u32_t arg2_, \
 				 u32_t arg3_, \
 				 u32_t arg4 __unused, \
@@ -532,7 +532,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
 				 void *ssf)
 
 #define __SYSCALL_HANDLER4(name_, arg1_, arg2_, arg3_, arg4_) \
-	u32_t _handler_ ## name_(u32_t arg1_, \
+	u32_t hdlr_ ## name_(u32_t arg1_, \
 				 u32_t arg2_, \
 				 u32_t arg3_, \
 				 u32_t arg4_, \
@@ -541,7 +541,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
 				 void *ssf)
 
 #define __SYSCALL_HANDLER5(name_, arg1_, arg2_, arg3_, arg4_, arg5_) \
-	u32_t _handler_ ## name_(u32_t arg1_, \
+	u32_t hdlr_ ## name_(u32_t arg1_, \
 				 u32_t arg2_, \
 				 u32_t arg3_, \
 				 u32_t arg4_, \
@@ -550,7 +550,7 @@ static inline int _obj_validation_check(struct _k_object *ko,
 				 void *ssf)
 
 #define __SYSCALL_HANDLER6(name_, arg1_, arg2_, arg3_, arg4_, arg5_, arg6_) \
-	u32_t _handler_ ## name_(u32_t arg1_, \
+	u32_t hdlr_ ## name_(u32_t arg1_, \
 				 u32_t arg2_, \
 				 u32_t arg3_, \
 				 u32_t arg4_, \

scripts/gen_syscall_header.py

@@ -70,7 +70,7 @@ def gen_make_syscall(ret, argc, tabcount):
     # from gc-sections; these references will not consume space.
 
     sys.stdout.write(
-        "static _GENERIC_SECTION(hndlr_ref) __used void *href = (void *)&_handler_##name; \\\n")
+        "static _GENERIC_SECTION(hndlr_ref) __used void *href = (void *)&hdlr_##name; \\\n")
     tabs(tabcount)
     if (ret != Retval.VOID):
         sys.stdout.write("return (ret)")

scripts/gen_syscalls.py

@@ -149,7 +149,7 @@ def analyze_fn(match_group):
 
     invocation = "%s(%s)" % (macro, argslist)
 
-    handler = "_handler_" + func_name
+    handler = "hdlr_" + func_name
 
     # Entry in _k_syscall_table
     table_entry = "[%s] = %s" % (sys_id, handler)