complier.h: add __noreturn and use it in code base

Add a __noreturn macro that wraps __attribute__((noreturn)) and replace
current users with the macro.

Change-Id: Iddd0728cf79678c3d1c1f7e7946c27375a644a7d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/28505
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/console/die.c

@@ -20,7 +20,6 @@
 #include <halt.h>
 
 #ifndef __ROMCC__
-#define NORETURN __attribute__((noreturn))
 
 /*
  * The method should be overwritten in mainboard directory to signal that a
@@ -33,7 +32,7 @@ __weak void die_notify(void)
 }
 
 /* Report a fatal error */
-void NORETURN die(const char *msg)
+void __noreturn die(const char *msg)
 {
 	printk(BIOS_EMERG, "%s", msg);
 	die_notify();

src/drivers/intel/fsp1_0/fsp_util.c

@@ -15,6 +15,7 @@
 
 #include <types.h>
 #include <string.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <bootstate.h>
 #include <cbmem.h>
@@ -66,7 +67,7 @@ void FspNotify (u32 Phase)
  * Call the FSP to do memory init. The FSP doesn't return to this function.
  * The FSP returns to the romstage_main_continue().
  */
-void __attribute__((noreturn)) fsp_early_init (FSP_INFO_HEADER *fsp_ptr)
+void __noreturn fsp_early_init (FSP_INFO_HEADER *fsp_ptr)
 {
 	FSP_FSP_INIT FspInitApi;
 	FSP_INIT_PARAMS FspInitParams;

src/include/compiler.h

@@ -26,5 +26,6 @@
 #define __always_unused __attribute__((unused))
 #define __must_check __attribute__((warn_unused_result))
 #define __weak __attribute__((weak))
+#define __noreturn __attribute__((noreturn))
 
 #endif

src/include/console/console.h

@@ -19,6 +19,7 @@
 #include <stdint.h>
 #include <rules.h>
 #include <arch/cpu.h>
+#include <compiler.h>
 #include <console/post_codes.h>
 #include <commonlib/loglevel.h>
 
@@ -40,7 +41,7 @@ void post_log_clear(void);
 #endif
 /* this function is weak and can be overridden by a mainboard function. */
 void mainboard_post(u8 value);
-void __attribute__((noreturn)) die(const char *msg);
+void __noreturn die(const char *msg);
 
 /*
  * This function is weak and can be overridden to provide additional

src/include/halt.h

@@ -20,10 +20,11 @@
 #ifdef __ROMCC__
 #include <lib/halt.c>
 #else
+#include <compiler.h>
 /**
  * halt the system reliably
  */
-void __attribute__((noreturn)) halt(void);
+void __noreturn halt(void);
 #endif /* __ROMCC__ */
 
 /* Power off the system. */

src/include/reset.h

@@ -1,14 +1,16 @@
 #ifndef RESET_H
 #define RESET_H
 
+#include <compiler.h>
+
 /* Generic reset functions. Call from code that wants to trigger a reset. */
 
 /* Super-hard reset specific to some Intel SoCs. */
-__attribute__((noreturn)) void global_reset(void);
+__noreturn void global_reset(void);
 /* Full board reset. Resets SoC and most/all board components (e.g. DRAM). */
-__attribute__((noreturn)) void hard_reset(void);
+__noreturn void hard_reset(void);
 /* Board reset. Resets SoC some board components (e.g. TPM but not DRAM). */
-__attribute__((noreturn)) void soft_reset(void);
+__noreturn void soft_reset(void);
 
 /* Reset implementations. Implement these in SoC or mainboard code. Implement
    at least hard_reset() if possible, others fall back to it if necessary. */

src/lib/reset.c

@@ -19,7 +19,7 @@
 #include <halt.h>
 #include <reset.h>
 
-__attribute__((noreturn)) static void __hard_reset(void) {
+__noreturn static void __hard_reset(void) {
 	if (IS_ENABLED(CONFIG_HAVE_HARD_RESET))
 		do_hard_reset();
 	else

src/lib/ubsan.c

@@ -43,8 +43,7 @@ typedef uintptr_t ubsan_value_handle_t;
 */
 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
 
-__attribute__((noreturn))
-static void ubsan_abort(const struct ubsan_source_location *location,
+static void __noreturn ubsan_abort(const struct ubsan_source_location *location,
 			const char *violation) {
 	static const struct ubsan_source_location unknown_location = {
 		"<unknown file>",
@@ -61,8 +60,8 @@ static void ubsan_abort(const struct ubsan_source_location *location,
 }
 
 #define ABORT_VARIANT(name, params, call) \
-	__attribute__((noreturn)) void __ubsan_handle_##name##_abort params; \
-	__attribute__((noreturn)) void __ubsan_handle_##name##_abort params { \
+	__noreturn void __ubsan_handle_##name##_abort params; \
+	__noreturn void __ubsan_handle_##name##_abort params { \
 		__ubsan_handle_##name call; \
 		__builtin_unreachable(); \
 	}
@@ -212,16 +211,14 @@ struct ubsan_unreachable_data {
 	struct ubsan_source_location location;
 };
 
-__attribute__((noreturn))
-void __ubsan_handle_builtin_unreachable(void *data_raw)
+void __noreturn __ubsan_handle_builtin_unreachable(void *data_raw)
 {
 	struct ubsan_unreachable_data *data =
 		(struct ubsan_unreachable_data *)data_raw;
 	ubsan_abort(&data->location, "reached unreachable");
 }
 
-__attribute__((noreturn))
-void __ubsan_handle_missing_return(void *data_raw)
+void __noreturn __ubsan_handle_missing_return(void *data_raw)
 {
 	const struct ubsan_unreachable_data *data =
 		(struct ubsan_unreachable_data *)data_raw;

src/northbridge/amd/lx/raminit.c

@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/msr.h>
 #include <cpu/amd/lxdef.h>
@@ -33,7 +34,7 @@ static void banner(const char *s)
 	printk(BIOS_DEBUG, " * %s\n", s);
 }
 
-static void __attribute__((noreturn)) hcf(void)
+static void __noreturn hcf(void)
 {
 	printk(BIOS_EMERG, "DIE\n");
 	/* this guarantees we flush the UART fifos (if any) and also

src/soc/nvidia/tegra124/lp0/tegra_lp0_resume.c

@@ -265,7 +265,7 @@ static uint32_t *sysctr_cntfid0_ptr = (void *)(SYSCTR_CTLR_BASE + 0x20);
 /* Utility functions. */
 
 static inline void __attribute__((always_inline))
-		   __attribute__((noreturn)) halt(void)
+		   __noreturn halt(void)
 {
 	for (;;);
 }
@@ -290,7 +290,7 @@ static inline void clrbits32(uint32_t bits, void *addr)
 	write32(addr, read32(addr) & ~bits);
 }
 
-static void __attribute__((noreturn)) reset(void)
+static void __noreturn reset(void)
 {
 	write32(clk_rst_rst_devices_l_ptr, SWR_TRIG_SYS_RST);
 	halt();

src/soc/nvidia/tegra210/lp0/tegra_lp0_resume.c

@@ -429,7 +429,7 @@ enum {
 /* Utility functions. */
 
 static inline void __attribute__((always_inline))
-		   __attribute__((noreturn)) halt(void)
+		   __noreturn halt(void)
 {
 	for (;;);
 }
@@ -454,7 +454,7 @@ static inline void clrbits32(uint32_t bits, void *addr)
 	write32(addr, read32(addr) & ~bits);
 }
 
-static void __attribute__((noreturn)) reset(void)
+static void __noreturn reset(void)
 {
 	write32(clk_rst_rst_devices_l_ptr, SWR_TRIG_SYS_RST);
 	halt();