soc/arm/silabs_exx32: clean up use of extern "C"

Remove extern "C" support from files that don't declare symbols subject
to language linkage effects.

Consistently place C++ use of extern "C" after all include directives,
within the negative branch of _ASMLANGUAGE if used.

Background from issue #17997:

Declarations that use C linkage should be placed within extern "C"
so the language linkage is correct when the header is included by
a C++ compiler.

Similarly #include directives should be outside the extern "C" to
ensure the language-specific default linkage is applied to any
declarations provided by the included header.

See: https://en.cppreference.com/w/cpp/language/language_linkage
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This commit is contained in:
Peter Bigot 2019-08-12 12:55:44 -05:00 committed by Ioannis Glaropoulos
commit 0ddcf49b85
6 changed files with 8 additions and 40 deletions

View file

@ -14,6 +14,10 @@
#include <soc.h>
#include <em_gpio.h>
#ifdef __cplusplus
extern "C" {
#endif
struct soc_gpio_pin {
GPIO_Port_TypeDef port; /** GPIO port */
unsigned int pin; /** GPIO pin on the port */
@ -27,4 +31,8 @@ struct soc_gpio_pin {
*/
void soc_gpio_configure(const struct soc_gpio_pin *pin);
#ifdef __cplusplus
}
#endif
#endif /* _SILABS_EXX32_SOC_GPIO_H_ */

View file

@ -15,10 +15,6 @@
#include <sys/util.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASMLANGUAGE
#include <em_common.h>
@ -29,8 +25,4 @@ extern "C" {
#endif /* !_ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SOC__H_ */

View file

@ -15,10 +15,6 @@
#include <sys/util.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASMLANGUAGE
#include <em_bus.h>
@ -30,8 +26,4 @@ extern "C" {
#endif /* !_ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SOC__H_ */

View file

@ -15,10 +15,6 @@
#include <sys/util.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASMLANGUAGE
#include <em_bus.h>
@ -30,8 +26,4 @@ extern "C" {
#endif /* !_ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SOC__H_ */

View file

@ -15,10 +15,6 @@
#include <sys/util.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASMLANGUAGE
#include <em_bus.h>
@ -30,8 +26,4 @@ extern "C" {
#endif /* !_ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SOC__H_ */

View file

@ -15,10 +15,6 @@
#include <sys/util.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ASMLANGUAGE
#include <em_common.h>
@ -29,8 +25,4 @@ extern "C" {
#endif /* !_ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _SOC__H_ */