1 files changed, 67 insertions, 2 deletions

diff --git a/lib/ccdbg-memory.c b/lib/ccdbg-memory.c
index 3406a1b1..d74726fb 100644
--- a/lib/ccdbg-memory.c
+++ b/lib/ccdbg-memory.c
@@ -23,9 +23,14 @@
  */
 
 static uint8_t	memory_init[] = {
+	2,	MOV_direct_A,		0x7f,
+	3,	MOV_direct1_direct2,	0x7e, SFR_DPL0,
+	3,	MOV_direct1_direct2,	0x7d, SFR_DPH0,
+	3,	MOV_direct1_direct2,	0x7c, SFR_DPL1,
+	3,	MOV_direct1_direct2,	0x7b, SFR_DPH1,
 	3,	MOV_DPTR_data16,	0,	0,
-#define HIGH_START	2
-#define LOW_START	3
+#define HIGH_START	21
+#define LOW_START	22
 	0,
 };
 
@@ -44,6 +49,15 @@ static uint8_t read8[] = {
 	0,
 };
 
+static uint8_t	memory_fini[] = {
+	2,	MOV_A_direct,		0x7f,
+	3,	MOV_direct1_direct2,	SFR_DPL0, 0x7e,
+	3,	MOV_direct1_direct2,	SFR_DPH0, 0x7d,
+	3,	MOV_direct1_direct2,	SFR_DPL1, 0x7c,
+	3,	MOV_direct1_direct2,	SFR_DPH1, 0x7b,
+	0,
+};
+
 uint8_t
 ccdbg_write_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
 {
@@ -64,6 +78,7 @@ ccdbg_write_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
 			nl = 0;
 		}
 	}
+	(void) ccdbg_execute(dbg, memory_fini);
 	if (nl)
 		ccdbg_debug(CC_DEBUG_MEMORY, "\n");
 	return 0;
@@ -88,6 +103,7 @@ ccdbg_read_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
 			nl = 0;
 		}
 	}
+	(void) ccdbg_execute(dbg, memory_fini);
 	if (nl)
 		ccdbg_debug(CC_DEBUG_MEMORY, "\n");
 	return 0;
@@ -118,3 +134,52 @@ ccdbg_read_hex_image(struct ccdbg *dbg, uint16_t address, uint16_t length)
 	ccdbg_read_memory(dbg, address, image->data, length);
 	return image;
 }
+
+static uint8_t sfr_init[] = {
+	2,	MOV_direct_A,		0x7f,
+	0,
+};
+
+static uint8_t sfr_fini[] = {
+	2,	MOV_A_direct,		0x7f,
+	0,
+};
+
+static uint8_t sfr_read[] = {
+	2,	MOV_A_direct,		0,
+#define SFR_READ_ADDR	2
+	0,
+};
+
+static uint8_t sfr_write[] = {
+	3,	MOV_direct_data,	0,	0,
+#define SFR_WRITE_ADDR	2
+#define SFR_WRITE_DATA	3
+	0,
+};
+
+uint8_t
+ccdbg_read_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
+{
+	int	i;
+	(void) ccdbg_execute(dbg, sfr_init);
+	for (i = 0; i < nbytes; i++) {
+		sfr_read[SFR_READ_ADDR] = addr + i;
+		*bytes++ = ccdbg_execute(dbg, sfr_read);
+	}
+	(void) ccdbg_execute(dbg, sfr_fini);
+	return 0;
+}
+
+uint8_t
+ccdbg_write_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
+{
+	int	i;
+	
+	for (i = 0; i < nbytes; i++) {
+		sfr_write[SFR_WRITE_ADDR] = addr + i;
+		sfr_write[SFR_WRITE_DATA] = *bytes++;
+		ccdbg_execute(dbg, sfr_write);
+	}
+	return 0;
+}