Save/restore registers to host during memory operations. Cache ROM data.

[fw/altos] / lib / ccdbg.h

diff --git a/lib/ccdbg.h b/lib/ccdbg.h
index 203b5aebb8c723b043f0654c95838afcfa7dcfac..241c4eecf311b717ee4f216cd9b84edf7c492a20 100644 (file)
--- a/lib/ccdbg.h
+++ b/lib/ccdbg.h
@@ -39,6 +39,7 @@
 
 /* 8051 instructions
  */
+#define NOP                    0x00
 #define MOV_direct_data                0x75
 #define LJMP                   0x02
 #define MOV_Rn_data(n)         (0x78 | (n))
@@ -99,6 +100,9 @@
 /* Bit-addressable accumulator */
 #define ACC(bit)               (0xE0 | (bit))
 
+/* Bit-addressable status word */
+#define PSW(bit)               (0xD0 | (bit))
+
 #define CP_USB_ASYNC
 
 struct ccdbg {
@@ -107,6 +111,7 @@ struct ccdbg {
 #else
        struct cp_usb *cp;
 #endif
+       struct hex_image *rom;
 };
 
 /* Intel hex file format data
@@ -130,6 +135,18 @@ struct hex_image {
        uint8_t         data[0];
 };
 
+#define CC_STATE_ACC   0x1
+#define CC_STATE_PSW   0x2
+#define CC_STATE_DP    0x4
+
+#define CC_STATE_NSFR  5
+
+struct ccstate {
+       uint16_t        mask;
+       uint8_t         acc;
+       uint8_t         sfr[CC_STATE_NSFR];
+};
+
 #define HEX_RECORD_NORMAL              0x00
 #define HEX_RECORD_EOF                 0x01
 #define HEX_RECORD_EXTENDED_ADDRESS    0x02
@@ -337,4 +354,30 @@ ccdbg_read_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes);
 uint8_t
 ccdbg_write_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes);
 
+/* ccdbg-rom.c */
+uint8_t
+ccdbg_set_rom(struct ccdbg *dbg, struct hex_image *rom);
+
+uint8_t
+ccdbg_rom_contains(struct ccdbg *dbg, uint16_t addr, int nbytes);
+
+uint8_t
+ccdbg_rom_replace_xmem(struct ccdbg *dbg,
+                      uint16_t addrp, uint8_t *bytesp, int nbytes);
+
+/* ccdbg-state.c */
+uint8_t
+ccdbg_state_save(struct ccdbg *dbg, struct ccstate *state, unsigned int mask);
+
+uint8_t
+ccdbg_state_restore(struct ccdbg *dbg, struct ccstate *state);
+
+void
+ccdbg_state_replace_xmem(struct ccdbg *dbg, struct ccstate *state,
+                        uint16_t addr, uint8_t *bytes, int nbytes);
+
+void
+ccdbg_state_replace_sfr(struct ccdbg *dbg, struct ccstate *state,
+                       uint8_t addr, uint8_t *bytes, int nbytes);
+
 #endif /* _CCDBG_H_ */