From 4ac2a5a5bad99733852e0d52f60b24df238ebcdc Mon Sep 17 00:00:00 2001 From: anjiahao Date: Tue, 8 Oct 2024 11:24:37 +0800 Subject: [PATCH] compiler:add visibility & constructor keywords in compiler.h Signed-off-by: anjiahao --- include/nuttx/compiler.h | 46 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/include/nuttx/compiler.h b/include/nuttx/compiler.h index 07ff6130baa50..d09be5d1fb751 100644 --- a/include/nuttx/compiler.h +++ b/include/nuttx/compiler.h @@ -307,6 +307,27 @@ # endif # endif +/* The constructor attribute causes the function to be called + * automatically before execution enters main (). + * Similarly, the destructor attribute causes the function to + * be called automatically after main () has completed or + * exit () has been called. Functions with these attributes are + * useful for initializing data that will be used implicitly + * during the execution of the program. + * See https://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Function-Attributes.html + */ + +# define constructor_fuction __attribute__((constructor)) +# define destructor_function __attribute__((destructor)) + +/* Use visibility_hidden to hide symbols by default + * Use visibility_default to make symbols visible + * See https://gcc.gnu.org/wiki/Visibility + */ + +# define visibility_hidden __attribute__((visibility("hidden"))) +# define visibility_default __attribute__((visibility("default"))) + /* The unused code or data */ # define unused_code __attribute__((unused)) @@ -597,6 +618,11 @@ # define nosanitize_address # define nosanitize_undefined # define nostackprotect_function +# define constructor_fuction +# define destructor_function + +# define visibility_hidden +# define visibility_default # define unused_code # define unused_data @@ -744,6 +770,10 @@ # define nosanitize_address # define nosanitize_undefined # define nostackprotect_function +# define constructor_fuction +# define destructor_function +# define visibility_hidden +# define visibility_default # define unused_code # define unused_data # define used_code @@ -859,6 +889,10 @@ # define nosanitize_address # define nosanitize_undefined # define nostackprotect_function +# define constructor_fuction +# define destructor_function +# define visibility_hidden +# define visibility_default # define unused_code # define unused_data # define used_code @@ -953,6 +987,10 @@ # define nosanitize_address # define nosanitize_undefined # define nostackprotect_function +# define constructor_fuction +# define destructor_function +# define visibility_hidden +# define visibility_default # define unused_code # define unused_data # define used_code @@ -1037,6 +1075,10 @@ # define nosanitize_address # define nosanitize_undefined # define nostackprotect_function +# define constructor_fuction +# define destructor_function +# define visibility_hidden +# define visibility_default # define unused_code __attribute__((unused)) # define unused_data __attribute__((unused)) # define used_code __attribute__((used)) @@ -1106,6 +1148,10 @@ # define nosanitize_address # define nosanitize_undefined # define nostackprotect_function +# define constructor_fuction +# define destructor_function +# define visibility_hidden +# define visibility_default # define unused_code # define unused_data # define used_code