[dev] move the device/driver class api to __start __stop style symbols

dev/devices.ld

@@ -1,8 +0,0 @@
-SECTIONS {
-    .devices : {
-        __devices = .;
-        KEEP (*(.devices))
-        __devices_end = .;
-    }
-}
-INSERT AFTER .data;

dev/driver.c

@@ -12,14 +12,13 @@
 #include <lk/trace.h>
 
 /* static list of devices constructed with DEVICE_INSTANCE macros */
-extern struct device __devices[];
-extern struct device __devices_end[];
+extern struct device __start_devices __WEAK;
+extern struct device __stop_devices __WEAK;
 
 status_t device_init_all(void) {
     status_t res = NO_ERROR;
 
-    struct device *dev = __devices;
-    while (dev != __devices_end) {
+    for (struct device *dev = &__start_devices; dev != &__stop_devices; dev++) {
         if (dev->flags & DEVICE_FLAG_AUTOINIT) {
             status_t code = device_init(dev);
 
@@ -30,8 +29,6 @@ status_t device_init_all(void) {
                 res = code;
             }
         }
-
-        dev++;
     }
 
     return res;
@@ -40,8 +37,7 @@ status_t device_init_all(void) {
 status_t device_fini_all(void) {
     status_t res = NO_ERROR;
 
-    struct device *dev = __devices;
-    while (dev != __devices_end) {
+    for (struct device *dev = &__start_devices; dev != &__stop_devices; dev++) {
         status_t code = device_fini(dev);
 
         if (code < 0) {
@@ -50,8 +46,6 @@ status_t device_fini_all(void) {
 
             res = code;
         }
-
-        dev++;
     }
 
     return res;

dev/drivers.ld

@@ -1,8 +0,0 @@
-SECTIONS {
-    .drivers : {
-        __drivers = .;
-        KEEP (*(.drivers))
-        __drivers_end = .;
-    }
-}
-INSERT AFTER .rodata;

dev/include/dev/driver.h

@@ -70,7 +70,7 @@ struct driver {
 
 #define DRIVER_EXPORT(type_, ops_) \
     const struct driver concat(__driver_, type_) \
-        __ALIGNED(sizeof(void *)) __SECTION(".drivers") = { \
+        __ALIGNED(sizeof(void *)) __SECTION("drivers") = { \
         .type = #type_, \
         .ops = ops_, \
     }
@@ -78,7 +78,7 @@ struct driver {
 #define DEVICE_INSTANCE(type_, name_, config_, flags_) \
     extern struct driver concat(__driver_, type_); \
     struct device concat(__device_, concat(type_, concat(_, name_))) \
-        __ALIGNED(sizeof(void *)) __SECTION(".devices") = { \
+        __ALIGNED(sizeof(void *)) __SECTION("devices") = { \
         .name = #name_, \
         .driver = &concat(__driver_, type_), \
         .flags = flags_, \

dev/rules.mk

@@ -12,6 +12,4 @@ MODULE_SRCS += \
 	$(LOCAL_DIR)/class/fb_api.c \
 	$(LOCAL_DIR)/class/netif_api.c \
 
-EXTRA_LINKER_SCRIPTS += $(LOCAL_DIR)/devices.ld $(LOCAL_DIR)/drivers.ld
-
 include make/module.mk