Merge pull request #75 from spaceinventor/const-vmem

Added const vmem_t * vmem for vmem init, read, write functions

Author: johandc

include/vmem/vmem_file.h

@@ -32,9 +32,9 @@ typedef struct {
 	FILE * stream;
 } vmem_file_driver_t;
 
-void vmem_file_init(vmem_t * vmem);
-void vmem_file_read(vmem_t * vmem, uint64_t addr, void * dataout, uint32_t len);
-void vmem_file_write(vmem_t * vmem, uint64_t addr, const void * datain, uint32_t len);
+void vmem_file_init(const vmem_t * vmem);
+void vmem_file_read(const vmem_t * vmem, uint64_t addr, void * dataout, uint32_t len);
+void vmem_file_write(const vmem_t * vmem, uint64_t addr, const void * datain, uint32_t len);
 
 #define VMEM_DEFINE_FILE(name_in, strname, filename_in, size_in) \
 	uint8_t vmem_##name_in##_buf[size_in] = {}; \

src/vmem/vmem_file.c

@@ -13,7 +13,7 @@
 #include <vmem/vmem.h>
 #include <vmem/vmem_file.h>
 
-void vmem_file_init(vmem_t * vmem) {
+void vmem_file_init(const vmem_t * vmem) {
 	vmem_file_driver_t *driver = (vmem_file_driver_t *) vmem->driver;
 	if(driver->stream == NULL) {
 		/* Open file for reading/writing, creating it if it doesn't exist */
@@ -30,13 +30,13 @@ void vmem_file_init(vmem_t * vmem) {
 	}
 }
 
-void vmem_file_read(vmem_t * vmem, uint64_t addr, void * dataout, uint32_t len) {
+void vmem_file_read(const vmem_t * vmem, uint64_t addr, void * dataout, uint32_t len) {
 	vmem_file_driver_t *driver = (vmem_file_driver_t *) vmem->driver;
 	vmem_file_init(vmem);
 	memcpy(dataout, (void*)((intptr_t)driver->physaddr + addr), len);
 }
 
-void vmem_file_write(vmem_t * vmem, uint64_t addr, const void * datain, uint32_t len) {
+void vmem_file_write(const vmem_t * vmem, uint64_t addr, const void * datain, uint32_t len) {
 	vmem_file_driver_t *driver = (vmem_file_driver_t *) vmem->driver;
 	memcpy((void *)((intptr_t)driver->physaddr + addr), datain, len);
 	vmem_file_init(vmem);