compiler.h: add __weak macro

Instead of writing out '__attribute__((weak))' use a shorter form.

Change-Id: If418a1d55052780077febd2d8f2089021f414b91
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25767
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Justin TerAvest <teravest@chromium.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c
index 25b47737b1..54646c9595 100644
--- a/src/soc/intel/common/block/systemagent/systemagent.c
+++ b/src/soc/intel/common/block/systemagent/systemagent.c
@@ -15,6 +15,7 @@
 
 #include <arch/io.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
@@ -25,25 +26,25 @@
 #include "systemagent_def.h"
 
 /* SoC override function */
-__attribute__((weak)) void soc_systemagent_init(struct device *dev)
+__weak void soc_systemagent_init(struct device *dev)
 {
 	/* no-op */
 }
 
-__attribute__((weak)) void soc_add_fixed_mmio_resources(struct device *dev,
+__weak void soc_add_fixed_mmio_resources(struct device *dev,
 		int *resource_cnt)
 {
 	/* no-op */
 }
 
-__attribute__((weak)) int soc_get_uncore_prmmr_base_and_mask(uint64_t *base,
+__weak int soc_get_uncore_prmmr_base_and_mask(uint64_t *base,
 		uint64_t *mask)
 {
 	/* return failure for this dummy API */
 	return -1;
 }
 
-__attribute__((weak)) size_t soc_reserved_mmio_size(void)
+__weak size_t soc_reserved_mmio_size(void)
 {
 	return 0;
 }