LVGL 库提交

Lib/lvgl/src/stdlib/uefi/lv_mem_core_uefi.c

@@ -0,0 +1,116 @@
+/**
+ * @file lv_mem_core_uefi.c
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_mem.h"
+#if LV_USE_UEFI
+#if LV_UEFI_USE_MEMORY_SERVICES && LV_USE_STDLIB_MALLOC == LV_STDLIB_CUSTOM
+#include "../drivers/uefi/lv_uefi_private.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+typedef struct _mem_header_t {
+    size_t size;
+    uint8_t data[0];
+} mem_header_t;
+
+void lv_mem_init(void)
+{
+    LV_ASSERT_NULL(gLvEfiBS);
+
+    return; /*Nothing to init*/
+}
+
+void lv_mem_deinit(void)
+{
+    return; /*Nothing to deinit*/
+}
+
+void * lv_malloc_core(size_t size)
+{
+    size_t size_with_header = size + sizeof(mem_header_t);
+    mem_header_t * ptr = NULL;
+
+    if(gLvEfiBS->AllocatePool(EfiBootServicesData, size_with_header, (void **)&ptr) != EFI_SUCCESS) return NULL;
+
+    ptr->size = size;
+
+    return ptr->data;
+}
+
+void * lv_realloc_core(void * p, size_t new_size)
+{
+    mem_header_t * p_header = NULL;
+    uintptr_t p_address = (uintptr_t)p;
+    void * p_new = NULL;
+
+    if(p == NULL) return lv_malloc_core(new_size);
+    // Check for invalid pointers
+    if(p_address < sizeof(mem_header_t)) return NULL;
+
+    p_address -= sizeof(mem_header_t);
+    p_header = (mem_header_t *) p_address;
+
+    // UEFI supportes no realloc, if the size grows a new memory block has to be allocated
+    if(p_header->size > new_size) return p;
+
+    p_new = lv_malloc_core(new_size);
+    lv_memcpy(p_new, p, p_header->size);
+    lv_free_core(p);
+
+    return p_new;
+}
+
+void lv_free_core(void * p)
+{
+    uintptr_t p_address = (uintptr_t)p;
+    if(p_address < sizeof(mem_header_t)) return;
+
+    p_address -= sizeof(mem_header_t);
+
+    gLvEfiBS->FreePool((void *)p_address);
+}
+
+void lv_mem_monitor_core(lv_mem_monitor_t * mon_p)
+{
+    /*Not supported*/
+    LV_UNUSED(mon_p);
+    return;
+}
+
+lv_result_t lv_mem_test_core(void)
+{
+    /*Not supported*/
+    return LV_RESULT_OK;
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif
+#endif