discover dldi allocated space

DS-Homebrew · Oct 17, 2016 · ffa565f · ffa565f
1 parent be26934
commit ffa565f
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/dldi/source/dldi_header.s b/dldi/source/dldi_header.s
@@ -6,6 +6,7 @@
 	.global word_params
 	.global words_msg
 	.global tmp_buf_addr
+	.global allocated_space
 	.align	4
 	.arm
 
@@ -28,6 +29,7 @@
 	.byte	0x01			@ Version number
 	.byte	0x0d		@ 8KiB	@ Log [base-2] of the size of this driver in bytes.
 	.byte	FIX_GOT | FIX_BSS | FIX_GLUE | FIX_ALL	@ Sections to fix
+	allocated_space:
 	.byte 	0x00			@ Space allocated in the application, not important here.
 
 @---------------------------------------------------------------------------------

diff --git a/dldi/source/iointerface.c b/dldi/source/iointerface.c
@@ -46,6 +46,7 @@ extern vu32 words_msg;
 
  // Use the dldi remaining space as temporary buffer : 28k usually available
 extern vu32* tmp_buf_addr;
+extern vu8 allocated_space;
 
 void sendValue32(u32 value32) {
 	nocashMessage("sendValue32");
@@ -137,8 +138,7 @@ bool sd_ReadSectors(sec_t sector, sec_t numSectors,void* buffer) {
 
 	//__custom_mpu_setup();
 
-	//int max_reads = ((2 ^ io_dldi_data->allocatedSize) / 512) - 11;
-	int max_reads = MAX_READ;
+	int max_reads = ((1 << allocated_space) / 512) - 11;
 
 	for(int numreads =0; numreads<numSectors; numreads+=max_reads) {
 		startsector = sector+numreads;
@@ -177,8 +177,7 @@ bool sd_WriteSectors(sec_t sector, sec_t numSectors,const void* buffer) {
 
 	//__custom_mpu_setup();
 
-	//int max_reads = ((2 ^ io_dldi_data->allocatedSize) / 512) - 11;
-	int max_reads = MAX_READ;
+	int max_reads = ((1 << allocated_space) / 512) - 11;
 
 	for(int numreads =0; numreads<numSectors; numreads+=max_reads) {
 		startsector = sector+numreads;