]> git.sur5r.net Git - openocd/blobdiff - src/target/dsp563xx.c
Fix "unused variable" warnings (errors) detected with GCC 4.7.0 - trivial fixes
[openocd] / src / target / dsp563xx.c
index d3fa4c3bb65f07673a27b575b3c5acb49f7ab62c..5290b637751002ee7fdb694c74c9d4761938290b 100644 (file)
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2009 by Mathias Kuester                                 *
+ *   Copyright (C) 2009-2011 by Mathias Kuester                            *
  *   mkdorg@users.sourceforge.net                                          *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -21,7 +21,7 @@
 #include "config.h"
 #endif
 
-#include <helper/jim.h>
+#include <jim.h>
 
 #include "target.h"
 #include "target_type.h"
 #include "dsp563xx.h"
 #include "dsp563xx_once.h"
 
-#define DSP563XX_JTAG_INS_LEN          4
-
-#define JTAG_STATUS_NORMAL             0x01
-#define JTAG_STATUS_STOPWAIT           0x05
-#define JTAG_STATUS_BUSY               0x09
-#define JTAG_STATUS_DEBUG              0x0d
-
-#define JTAG_INSTR_EXTEST              0x00
-#define JTAG_INSTR_SAMPLE_PRELOAD      0x01
-#define JTAG_INSTR_IDCODE              0x02
-#define JTAG_INSTR_CLAMP               0x03
-#define JTAG_INSTR_HIZ                 0x04
-#define JTAG_INSTR_ENABLE_ONCE         0x06
-#define JTAG_INSTR_DEBUG_REQUEST       0x07
-#define JTAG_INSTR_BYPASS              0x0F
-
-/* forward declarations */
-int dsp563xx_target_create(struct target *target, Jim_Interp * interp);
-int dsp563xx_init_target(struct command_context *cmd_ctx, struct target *target);
-
-int dsp563xx_arch_state(struct target *target);
-int dsp563xx_poll(struct target *target);
-int dsp563xx_halt(struct target *target);
-int dsp563xx_resume(struct target *target, int current, uint32_t address,
-                   int handle_breakpoints, int debug_execution);
-int dsp563xx_step(struct target *target, int current, uint32_t address,
-                 int handle_breakpoints);
-
-int dsp563xx_assert_reset(struct target *target);
-int dsp563xx_deassert_reset(struct target *target);
-int dsp563xx_soft_reset_halt(struct target *target);
-
-/* IR and DR functions */
-int dsp563xx_jtag_sendinstr(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out);
-int dsp563xx_jtag_senddat(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out,
-                         int len);
-
-int dsp563xx_read_memory_p(struct target *target, uint32_t address, uint32_t size,
-                          uint32_t count, uint8_t * buffer);
-int dsp563xx_write_memory_p(struct target *target, uint32_t address, uint32_t size,
-                           uint32_t count, uint8_t * buffer);
-
-#define ASM_REG_R_R0   0x607000
-#define ASM_REG_R_R1   0x617000
-#define ASM_REG_R_R2   0x627000
-#define ASM_REG_R_R3   0x637000
-#define ASM_REG_R_R4   0x647000
-#define ASM_REG_R_R5   0x657000
-#define ASM_REG_R_R6   0x667000
-#define ASM_REG_R_R7   0x677000
-
 #define ASM_REG_W_R0   0x60F400
 #define ASM_REG_W_R1   0x61F400
 #define ASM_REG_W_R2   0x62F400
@@ -89,15 +38,6 @@ int dsp563xx_write_memory_p(struct target *target, uint32_t address, uint32_t si
 #define ASM_REG_W_R6   0x66F400
 #define ASM_REG_W_R7   0x67F400
 
-#define ASM_REG_R_N0   0x707000
-#define ASM_REG_R_N1   0x717000
-#define ASM_REG_R_N2   0x727000
-#define ASM_REG_R_N3   0x737000
-#define ASM_REG_R_N4   0x747000
-#define ASM_REG_R_N5   0x757000
-#define ASM_REG_R_N6   0x767000
-#define ASM_REG_R_N7   0x777000
-
 #define ASM_REG_W_N0   0x70F400
 #define ASM_REG_W_N1   0x71F400
 #define ASM_REG_W_N2   0x72F400
@@ -107,15 +47,6 @@ int dsp563xx_write_memory_p(struct target *target, uint32_t address, uint32_t si
 #define ASM_REG_W_N6   0x76F400
 #define ASM_REG_W_N7   0x77F400
 
-#define ASM_REG_R_M0   0x057020        /* control register m[0..7] */
-#define ASM_REG_R_M1   0x057021
-#define ASM_REG_R_M2   0x057022
-#define ASM_REG_R_M3   0x057023
-#define ASM_REG_R_M4   0x057024
-#define ASM_REG_R_M5   0x057025
-#define ASM_REG_R_M6   0x057026
-#define ASM_REG_R_M7   0x057027
-
 #define ASM_REG_W_M0   0x05F420
 #define ASM_REG_W_M1   0x05F421
 #define ASM_REG_W_M2   0x05F422
@@ -125,137 +56,304 @@ int dsp563xx_write_memory_p(struct target *target, uint32_t address, uint32_t si
 #define ASM_REG_W_M6   0x05F426
 #define ASM_REG_W_M7   0x05F427
 
-#define ASM_REG_R_X0   0x447000
-#define ASM_REG_R_X1   0x457000
-
 #define ASM_REG_W_X0   0x44F400
 #define ASM_REG_W_X1   0x45F400
 
-#define ASM_REG_R_Y0   0x467000
-#define ASM_REG_R_Y1   0x477000
-
 #define ASM_REG_W_Y0   0x46F400
 #define ASM_REG_W_Y1   0x47F400
 
-#define ASM_REG_R_A0   0x507000
-#define ASM_REG_R_A1   0x547000
-#define ASM_REG_R_A2   0x527000
-
 #define ASM_REG_W_A0   0x50F400
 #define ASM_REG_W_A1   0x54F400
 #define ASM_REG_W_A2   0x52F400
 
-#define ASM_REG_R_B0   0x517000
-#define ASM_REG_R_B1   0x557000
-#define ASM_REG_R_B2   0x537000
-
 #define ASM_REG_W_B0   0x51F400
 #define ASM_REG_W_B1   0x55F400
 #define ASM_REG_W_B2   0x53F400
 
-#define ASM_REG_R_VBA  0x057030        /* control register */
 #define ASM_REG_W_VBA  0x05F430
-
-#define ASM_REG_R_OMR  0x05703A        /* control register */
 #define ASM_REG_W_OMR  0x05F43A
-
-#define ASM_REG_R_EP   0x05702A
 #define ASM_REG_W_EP   0x05F42A
-
-#define ASM_REG_R_SC   0x057031        /* stack counter */
 #define ASM_REG_W_SC   0x05F431
-
-#define ASM_REG_R_SZ   0x057038        /* stack size */
 #define ASM_REG_W_SZ   0x05F438
-
-#define ASM_REG_R_SR   0x057039        /* control register, status register */
 #define ASM_REG_W_SR   0x05F439
-
-#define ASM_REG_R_SP   0x05703B        /* control register, stack pointer */
 #define ASM_REG_W_SP   0x05F43B
-
-#define ASM_REG_R_SSH  0x05703C        /* control register, system stack high */
-#define ASM_REG_W_SSH  0x05743C
-
-#define ASM_REG_R_SSL  0x05703D        /* control register, system stack low */
+#define ASM_REG_W_SSH  0x05F43C
 #define ASM_REG_W_SSL  0x05F43D
-
-#define ASM_REG_R_LA   0x05703E        /* control register, loop address */
 #define ASM_REG_W_LA   0x05F43E
-
-#define ASM_REG_R_LC   0x05703F        /* control register, loop count */
 #define ASM_REG_W_LC   0x05F43F
-
-#define ASM_REG_R_PC   0x000000
 #define ASM_REG_W_PC   0x000000
+#define ASM_REG_W_IPRC 0xFFFFFF
+#define ASM_REG_W_IPRP 0xFFFFFE
+
+#define ASM_REG_W_BCR  0xFFFFFB
+#define ASM_REG_W_DCR  0xFFFFFA
+#define ASM_REG_W_AAR0 0xFFFFF9
+#define ASM_REG_W_AAR1 0xFFFFF8
+#define ASM_REG_W_AAR2 0xFFFFF7
+#define ASM_REG_W_AAR3 0xFFFFF6
+
+enum once_reg_idx {
+       ONCE_REG_IDX_OSCR=0,
+       ONCE_REG_IDX_OMBC=1,
+       ONCE_REG_IDX_OBCR=2,
+       ONCE_REG_IDX_OMLR0=3,
+       ONCE_REG_IDX_OMLR1=4,
+       ONCE_REG_IDX_OGDBR=5,
+       ONCE_REG_IDX_OPDBR=6,
+       ONCE_REG_IDX_OPILR=7,
+       ONCE_REG_IDX_PDB=8,
+       ONCE_REG_IDX_OTC=9,
+       ONCE_REG_IDX_OPABFR=10,
+       ONCE_REG_IDX_OPABDR=11,
+       ONCE_REG_IDX_OPABEX=12,
+       ONCE_REG_IDX_OPABF0=13,
+       ONCE_REG_IDX_OPABF1=14,
+       ONCE_REG_IDX_OPABF2=15,
+       ONCE_REG_IDX_OPABF3=16,
+       ONCE_REG_IDX_OPABF4=17,
+       ONCE_REG_IDX_OPABF5=18,
+       ONCE_REG_IDX_OPABF6=19,
+       ONCE_REG_IDX_OPABF7=20,
+       ONCE_REG_IDX_OPABF8=21,
+       ONCE_REG_IDX_OPABF9=22,
+       ONCE_REG_IDX_OPABF10=23,
+       ONCE_REG_IDX_OPABF11=24,
+};
+
+static struct once_reg once_regs[] = {
+       {ONCE_REG_IDX_OSCR,    DSP563XX_ONCE_OSCR,    24, "OSCR",    0},
+       {ONCE_REG_IDX_OMBC,    DSP563XX_ONCE_OMBC,    24, "OMBC",    0},
+       {ONCE_REG_IDX_OBCR,    DSP563XX_ONCE_OBCR,    24, "OBCR",    0},
+       {ONCE_REG_IDX_OMLR0,   DSP563XX_ONCE_OMLR0,   24, "OMLR0",   0},
+       {ONCE_REG_IDX_OMLR1,   DSP563XX_ONCE_OMLR1,   24, "OMLR1",   0},
+       {ONCE_REG_IDX_OGDBR,   DSP563XX_ONCE_OGDBR,   24, "OGDBR",   0},
+       {ONCE_REG_IDX_OPDBR,   DSP563XX_ONCE_OPDBR,   24, "OPDBR",   0},
+       {ONCE_REG_IDX_OPILR,   DSP563XX_ONCE_OPILR,   24, "OPILR",   0},
+       {ONCE_REG_IDX_PDB,     DSP563XX_ONCE_PDBGOTO, 24, "PDB",     0},
+       {ONCE_REG_IDX_OTC,     DSP563XX_ONCE_OTC,     24, "OTC",     0},
+       {ONCE_REG_IDX_OPABFR,  DSP563XX_ONCE_OPABFR,  24, "OPABFR",  0},
+       {ONCE_REG_IDX_OPABDR,  DSP563XX_ONCE_OPABDR,  24, "OPABDR",  0},
+       {ONCE_REG_IDX_OPABEX,  DSP563XX_ONCE_OPABEX,  24, "OPABEX",  0},
+       {ONCE_REG_IDX_OPABF0,  DSP563XX_ONCE_OPABF11, 25, "OPABF0",  0},
+       {ONCE_REG_IDX_OPABF1,  DSP563XX_ONCE_OPABF11, 25, "OPABF1",  0},
+       {ONCE_REG_IDX_OPABF2,  DSP563XX_ONCE_OPABF11, 25, "OPABF2",  0},
+       {ONCE_REG_IDX_OPABF3,  DSP563XX_ONCE_OPABF11, 25, "OPABF3",  0},
+       {ONCE_REG_IDX_OPABF4,  DSP563XX_ONCE_OPABF11, 25, "OPABF4",  0},
+       {ONCE_REG_IDX_OPABF5,  DSP563XX_ONCE_OPABF11, 25, "OPABF5",  0},
+       {ONCE_REG_IDX_OPABF6,  DSP563XX_ONCE_OPABF11, 25, "OPABF6",  0},
+       {ONCE_REG_IDX_OPABF7,  DSP563XX_ONCE_OPABF11, 25, "OPABF7",  0},
+       {ONCE_REG_IDX_OPABF8,  DSP563XX_ONCE_OPABF11, 25, "OPABF8",  0},
+       {ONCE_REG_IDX_OPABF9,  DSP563XX_ONCE_OPABF11, 25, "OPABF9",  0},
+       {ONCE_REG_IDX_OPABF10, DSP563XX_ONCE_OPABF11, 25, "OPABF10", 0},
+       {ONCE_REG_IDX_OPABF11, DSP563XX_ONCE_OPABF11, 25, "OPABF11", 0},
+//      {25,0x1f,24,"NRSEL",0},
+};
+
+enum dsp563xx_reg_idx {
+       DSP563XX_REG_IDX_R0=0,
+       DSP563XX_REG_IDX_R1=1,
+       DSP563XX_REG_IDX_R2=2,
+       DSP563XX_REG_IDX_R3=3,
+       DSP563XX_REG_IDX_R4=4,
+       DSP563XX_REG_IDX_R5=5,
+       DSP563XX_REG_IDX_R6=6,
+       DSP563XX_REG_IDX_R7=7,
+       DSP563XX_REG_IDX_N0=8,
+       DSP563XX_REG_IDX_N1=9,
+       DSP563XX_REG_IDX_N2=10,
+       DSP563XX_REG_IDX_N3=11,
+       DSP563XX_REG_IDX_N4=12,
+       DSP563XX_REG_IDX_N5=13,
+       DSP563XX_REG_IDX_N6=14,
+       DSP563XX_REG_IDX_N7=15,
+       DSP563XX_REG_IDX_M0=16,
+       DSP563XX_REG_IDX_M1=17,
+       DSP563XX_REG_IDX_M2=18,
+       DSP563XX_REG_IDX_M3=19,
+       DSP563XX_REG_IDX_M4=20,
+       DSP563XX_REG_IDX_M5=21,
+       DSP563XX_REG_IDX_M6=22,
+       DSP563XX_REG_IDX_M7=23,
+       DSP563XX_REG_IDX_X0=24,
+       DSP563XX_REG_IDX_X1=25,
+       DSP563XX_REG_IDX_Y0=26,
+       DSP563XX_REG_IDX_Y1=27,
+       DSP563XX_REG_IDX_A0=28,
+       DSP563XX_REG_IDX_A1=29,
+       DSP563XX_REG_IDX_A2=30,
+       DSP563XX_REG_IDX_B0=31,
+       DSP563XX_REG_IDX_B1=32,
+       DSP563XX_REG_IDX_B2=33,
+       DSP563XX_REG_IDX_SSH=34,
+       DSP563XX_REG_IDX_SSL=35,
+       DSP563XX_REG_IDX_SP=36,
+       DSP563XX_REG_IDX_EP=37,
+       DSP563XX_REG_IDX_SZ=38,
+       DSP563XX_REG_IDX_SC=39,
+       DSP563XX_REG_IDX_PC=40,
+       DSP563XX_REG_IDX_SR=41,
+       DSP563XX_REG_IDX_OMR=42,
+       DSP563XX_REG_IDX_LA=43,
+       DSP563XX_REG_IDX_LC=44,
+       DSP563XX_REG_IDX_VBA=45,
+       DSP563XX_REG_IDX_IPRC=46,
+       DSP563XX_REG_IDX_IPRP=47,
+       DSP563XX_REG_IDX_BCR=48,
+       DSP563XX_REG_IDX_DCR=49,
+       DSP563XX_REG_IDX_AAR0=50,
+       DSP563XX_REG_IDX_AAR1=51,
+       DSP563XX_REG_IDX_AAR2=52,
+       DSP563XX_REG_IDX_AAR3=53,
+};
 
 static const struct
 {
        unsigned id;
-       char *name;
+       const char *name;
        unsigned bits;
-       uint32_t r_cmd;
-       uint32_t w_cmd;
+       /* effective addressing mode encoding */
+       uint8_t eame;
+       uint32_t instr_mask;
 } dsp563xx_regs[] =
 {
        /* *INDENT-OFF* */
-       {0, "r0", 24, ASM_REG_R_R0, ASM_REG_W_R0},
-       {1, "r1", 24, ASM_REG_R_R1, ASM_REG_W_R1},
-       {2, "r2", 24, ASM_REG_R_R2, ASM_REG_W_R2},
-       {3, "r3", 24, ASM_REG_R_R3, ASM_REG_W_R3},
-       {4, "r4", 24, ASM_REG_R_R4, ASM_REG_W_R4},
-       {5, "r5", 24, ASM_REG_R_R5, ASM_REG_W_R5},
-       {6, "r6", 24, ASM_REG_R_R6, ASM_REG_W_R6},
-       {7, "r7", 24, ASM_REG_R_R7, ASM_REG_W_R7},
-       {8, "n0", 24, ASM_REG_R_N0, ASM_REG_W_N0},
-       {9, "n1", 24, ASM_REG_R_N1, ASM_REG_W_N1},
-       {10, "n2", 24, ASM_REG_R_N2, ASM_REG_W_N2},
-       {11, "n3", 24, ASM_REG_R_N3, ASM_REG_W_N3},
-       {12, "n4", 24, ASM_REG_R_N4, ASM_REG_W_N4},
-       {13, "n5", 24, ASM_REG_R_N5, ASM_REG_W_N5},
-       {14, "n6", 24, ASM_REG_R_N6, ASM_REG_W_N6},
-       {15, "n7", 24, ASM_REG_R_N7, ASM_REG_W_N7},
-       {16, "m0", 24, ASM_REG_R_M0, ASM_REG_W_M0},
-       {17, "m1", 24, ASM_REG_R_M1, ASM_REG_W_M1},
-       {18, "m2", 24, ASM_REG_R_M2, ASM_REG_W_M2},
-       {19, "m3", 24, ASM_REG_R_M3, ASM_REG_W_M3},
-       {20, "m4", 24, ASM_REG_R_M4, ASM_REG_W_M4},
-       {21, "m5", 24, ASM_REG_R_M5, ASM_REG_W_M5},
-       {22, "m6", 24, ASM_REG_R_M6, ASM_REG_W_M6},
-       {23, "m7", 24, ASM_REG_R_M7, ASM_REG_W_M7},
-       {24, "x0", 24, ASM_REG_R_X0, ASM_REG_W_X0},
-       {25, "x1", 24, ASM_REG_R_X1, ASM_REG_W_X1},
-       {26, "y0", 24, ASM_REG_R_Y0, ASM_REG_W_Y0},
-       {27, "y1", 24, ASM_REG_R_Y1, ASM_REG_W_Y1},
-       {28, "a0", 24, ASM_REG_R_A0, ASM_REG_W_A0},
-       {29, "a1", 24, ASM_REG_R_A1, ASM_REG_W_A1},
-       {30, "a2", 8, ASM_REG_R_A2, ASM_REG_W_A2},
-       {31, "b0", 24, ASM_REG_R_B0, ASM_REG_W_B0},
-       {32, "b1", 24, ASM_REG_R_B1, ASM_REG_W_B1},
-       {33, "b2", 8, ASM_REG_R_B2, ASM_REG_W_B2},
-       {34, "omr", 24, ASM_REG_R_OMR, ASM_REG_W_OMR},
-       {35, "vba", 24, ASM_REG_R_VBA, ASM_REG_W_VBA},
-       {36, "ep", 24, ASM_REG_R_EP, ASM_REG_W_EP},
-       {37, "sc", 24, ASM_REG_R_SC, ASM_REG_W_SC},
-       {38, "sz", 24, ASM_REG_R_SZ, ASM_REG_W_SZ},
-       {39, "sr", 24, ASM_REG_R_SR, ASM_REG_W_SR},
-       {40, "sp", 24, ASM_REG_R_SP, ASM_REG_W_SP},
-       {41, "la", 24, ASM_REG_R_LA, ASM_REG_W_LA},
-       {42, "lc", 24, ASM_REG_R_LC, ASM_REG_W_LC},
-       {43, "pc", 24, ASM_REG_R_PC, ASM_REG_W_PC}
+       /* address registers */
+       {DSP563XX_REG_IDX_R0, "r0", 24, 0x10, ASM_REG_W_R0},
+       {DSP563XX_REG_IDX_R1, "r1", 24, 0x11, ASM_REG_W_R1},
+       {DSP563XX_REG_IDX_R2, "r2", 24, 0x12, ASM_REG_W_R2},
+       {DSP563XX_REG_IDX_R3, "r3", 24, 0x13, ASM_REG_W_R3},
+       {DSP563XX_REG_IDX_R4, "r4", 24, 0x14, ASM_REG_W_R4},
+       {DSP563XX_REG_IDX_R5, "r5", 24, 0x15, ASM_REG_W_R5},
+       {DSP563XX_REG_IDX_R6, "r6", 24, 0x16, ASM_REG_W_R6},
+       {DSP563XX_REG_IDX_R7, "r7", 24, 0x17, ASM_REG_W_R7},
+       /* offset registers */
+       {DSP563XX_REG_IDX_N0, "n0", 24, 0x18, ASM_REG_W_N0},
+       {DSP563XX_REG_IDX_N1, "n1", 24, 0x19, ASM_REG_W_N1},
+       {DSP563XX_REG_IDX_N2, "n2", 24, 0x1a, ASM_REG_W_N2},
+       {DSP563XX_REG_IDX_N3, "n3", 24, 0x1b, ASM_REG_W_N3},
+       {DSP563XX_REG_IDX_N4, "n4", 24, 0x1c, ASM_REG_W_N4},
+       {DSP563XX_REG_IDX_N5, "n5", 24, 0x1d, ASM_REG_W_N5},
+       {DSP563XX_REG_IDX_N6, "n6", 24, 0x1e, ASM_REG_W_N6},
+       {DSP563XX_REG_IDX_N7, "n7", 24, 0x1f, ASM_REG_W_N7},
+       /* modifier registers */
+       {DSP563XX_REG_IDX_M0, "m0", 24, 0x20, ASM_REG_W_M0},
+       {DSP563XX_REG_IDX_M1, "m1", 24, 0x21, ASM_REG_W_M1},
+       {DSP563XX_REG_IDX_M2, "m2", 24, 0x22, ASM_REG_W_M2},
+       {DSP563XX_REG_IDX_M3, "m3", 24, 0x23, ASM_REG_W_M3},
+       {DSP563XX_REG_IDX_M4, "m4", 24, 0x24, ASM_REG_W_M4},
+       {DSP563XX_REG_IDX_M5, "m5", 24, 0x25, ASM_REG_W_M5},
+       {DSP563XX_REG_IDX_M6, "m6", 24, 0x26, ASM_REG_W_M6},
+       {DSP563XX_REG_IDX_M7, "m7", 24, 0x27, ASM_REG_W_M7},
+       /* data alu input register */
+       {DSP563XX_REG_IDX_X0, "x0", 24, 0x04, ASM_REG_W_X0},
+       {DSP563XX_REG_IDX_X1, "x1", 24, 0x05, ASM_REG_W_X1},
+       {DSP563XX_REG_IDX_Y0, "y0", 24, 0x06, ASM_REG_W_Y0},
+       {DSP563XX_REG_IDX_Y1, "y1", 24, 0x07, ASM_REG_W_Y1},
+       /* data alu accumulator register */
+       {DSP563XX_REG_IDX_A0, "a0", 24, 0x08, ASM_REG_W_A0},
+       {DSP563XX_REG_IDX_A1, "a1", 24, 0x0c, ASM_REG_W_A1},
+       {DSP563XX_REG_IDX_A2, "a2",  8, 0x0a, ASM_REG_W_A2},
+       {DSP563XX_REG_IDX_B0, "b0", 24, 0x09, ASM_REG_W_B0},
+       {DSP563XX_REG_IDX_B1, "b1", 24, 0x0d, ASM_REG_W_B1},
+       {DSP563XX_REG_IDX_B2, "b2",  8, 0x0b, ASM_REG_W_B2},
+       /* stack */
+       {DSP563XX_REG_IDX_SSH, "ssh",24, 0x3c, ASM_REG_W_SSH},
+       {DSP563XX_REG_IDX_SSL, "ssl",24, 0x3d, ASM_REG_W_SSL},
+       {DSP563XX_REG_IDX_SP, "sp", 24, 0x3b, ASM_REG_W_SP},
+       {DSP563XX_REG_IDX_EP, "ep", 24, 0x2a, ASM_REG_W_EP},
+       {DSP563XX_REG_IDX_SZ, "sz", 24, 0x38, ASM_REG_W_SZ},
+       {DSP563XX_REG_IDX_SC, "sc", 24, 0x31, ASM_REG_W_SC},
+       /* system */
+       {DSP563XX_REG_IDX_PC, "pc", 24, 0x00, ASM_REG_W_PC},
+       {DSP563XX_REG_IDX_SR, "sr", 24, 0x39, ASM_REG_W_SR},
+       {DSP563XX_REG_IDX_OMR, "omr",24, 0x3a, ASM_REG_W_OMR},
+       {DSP563XX_REG_IDX_LA, "la", 24, 0x3e, ASM_REG_W_LA},
+       {DSP563XX_REG_IDX_LC, "lc", 24, 0x3f, ASM_REG_W_LC},
+       /* interrupt */
+       {DSP563XX_REG_IDX_VBA, "vba", 24, 0x30, ASM_REG_W_VBA},
+       {DSP563XX_REG_IDX_IPRC, "iprc",24, 0x00, ASM_REG_W_IPRC},
+       {DSP563XX_REG_IDX_IPRP, "iprp",24, 0x00, ASM_REG_W_IPRP},
+       /* port a */
+       {DSP563XX_REG_IDX_BCR, "bcr", 24, 0x00, ASM_REG_W_BCR},
+       {DSP563XX_REG_IDX_DCR, "dcr", 24, 0x00, ASM_REG_W_DCR},
+       {DSP563XX_REG_IDX_AAR0, "aar0",24, 0x00, ASM_REG_W_AAR0},
+       {DSP563XX_REG_IDX_AAR1, "aar1",24, 0x00, ASM_REG_W_AAR1},
+       {DSP563XX_REG_IDX_AAR2, "aar2",24, 0x00, ASM_REG_W_AAR2},
+       {DSP563XX_REG_IDX_AAR3, "aar3",24, 0x00, ASM_REG_W_AAR3},
        /* *INDENT-ON* */
 };
 
-int dsp563xx_read_core_reg(struct target *target, int num)
+enum memory_type
+{
+       MEM_X = 0,
+       MEM_Y = 1,
+       MEM_P = 2,
+       MEM_L = 3,
+};
+
+#define INSTR_JUMP     0x0AF080
+/* Effective Addressing Mode Encoding */
+#define EAME_R0                0x10
+/* instrcution encoder */
+/* movep
+ * s - peripheral space X/Y (X=0,Y=1)
+ * w - write/read
+ * d - source/destination register
+ * p - IO short address
+ */
+#define INSTR_MOVEP_REG_HIO(s,w,d,p)   (0x084000 | ((s & 1)<<16) | ((w&1)<<15) | ((d & 0x3f)<<8) | (p & 0x3f))
+
+/* the gdb register list is send in this order */
+uint8_t gdb_reg_list_idx[] = {
+       DSP563XX_REG_IDX_X1, DSP563XX_REG_IDX_X0, DSP563XX_REG_IDX_Y1, DSP563XX_REG_IDX_Y0,
+       DSP563XX_REG_IDX_A2, DSP563XX_REG_IDX_A1, DSP563XX_REG_IDX_A0, DSP563XX_REG_IDX_B2,
+       DSP563XX_REG_IDX_B1, DSP563XX_REG_IDX_B0, DSP563XX_REG_IDX_PC, DSP563XX_REG_IDX_SR,
+       DSP563XX_REG_IDX_OMR,DSP563XX_REG_IDX_LA, DSP563XX_REG_IDX_LC, DSP563XX_REG_IDX_SSH,
+       DSP563XX_REG_IDX_SSL,DSP563XX_REG_IDX_SP, DSP563XX_REG_IDX_EP, DSP563XX_REG_IDX_SZ,
+       DSP563XX_REG_IDX_SC, DSP563XX_REG_IDX_VBA,DSP563XX_REG_IDX_IPRC, DSP563XX_REG_IDX_IPRP,
+       DSP563XX_REG_IDX_BCR,DSP563XX_REG_IDX_DCR,DSP563XX_REG_IDX_AAR0,DSP563XX_REG_IDX_AAR1,
+       DSP563XX_REG_IDX_AAR2,DSP563XX_REG_IDX_AAR3,DSP563XX_REG_IDX_R0,DSP563XX_REG_IDX_R1,
+       DSP563XX_REG_IDX_R2, DSP563XX_REG_IDX_R3, DSP563XX_REG_IDX_R4, DSP563XX_REG_IDX_R5,
+       DSP563XX_REG_IDX_R6, DSP563XX_REG_IDX_R7, DSP563XX_REG_IDX_N0, DSP563XX_REG_IDX_N1,
+       DSP563XX_REG_IDX_N2, DSP563XX_REG_IDX_N3, DSP563XX_REG_IDX_N4, DSP563XX_REG_IDX_N5,
+       DSP563XX_REG_IDX_N6, DSP563XX_REG_IDX_N7, DSP563XX_REG_IDX_M0, DSP563XX_REG_IDX_M1,
+       DSP563XX_REG_IDX_M2, DSP563XX_REG_IDX_M3, DSP563XX_REG_IDX_M4, DSP563XX_REG_IDX_M5,
+       DSP563XX_REG_IDX_M6, DSP563XX_REG_IDX_M7,
+};
+
+static int dsp563xx_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size)
+{
+       int i;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+
+       if (target->state != TARGET_HALTED)
+       {
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       *reg_list_size = DSP563XX_NUMCOREREGS;
+       *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
+
+       if (!*reg_list)
+               return ERROR_INVALID_ARGUMENTS;
+
+       for (i = 0; i < DSP563XX_NUMCOREREGS; i++)
+       {
+               (*reg_list)[i] = &dsp563xx->core_cache->reg_list[gdb_reg_list_idx[i]];
+       }
+
+       return ERROR_OK;
+
+}
+
+static int dsp563xx_read_core_reg(struct target *target, int num)
 {
        uint32_t reg_value;
-       struct dsp563xx_core_reg *dsp563xx_core_reg;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
        if ((num < 0) || (num >= DSP563XX_NUMCOREREGS))
                return ERROR_INVALID_ARGUMENTS;
 
-       dsp563xx_core_reg = dsp563xx->core_cache->reg_list[num].arch_info;
        reg_value = dsp563xx->core_regs[num];
        buf_set_u32(dsp563xx->core_cache->reg_list[num].value, 0, 32, reg_value);
        dsp563xx->core_cache->reg_list[num].valid = 1;
@@ -264,17 +362,15 @@ int dsp563xx_read_core_reg(struct target *target, int num)
        return ERROR_OK;
 }
 
-int dsp563xx_write_core_reg(struct target *target, int num)
+static int dsp563xx_write_core_reg(struct target *target, int num)
 {
        uint32_t reg_value;
-       struct dsp563xx_core_reg *dsp563xx_core_reg;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
        if ((num < 0) || (num >= DSP563XX_NUMCOREREGS))
                return ERROR_INVALID_ARGUMENTS;
 
        reg_value = buf_get_u32(dsp563xx->core_cache->reg_list[num].value, 0, 32);
-       dsp563xx_core_reg = dsp563xx->core_cache->reg_list[num].arch_info;
        dsp563xx->core_regs[num] = reg_value;
        dsp563xx->core_cache->reg_list[num].valid = 1;
        dsp563xx->core_cache->reg_list[num].dirty = 0;
@@ -282,39 +378,23 @@ int dsp563xx_write_core_reg(struct target *target, int num)
        return ERROR_OK;
 }
 
-int dsp563xx_target_create(struct target *target, Jim_Interp * interp)
+static int dsp563xx_get_core_reg(struct reg *reg)
 {
-       struct dsp563xx_common *dsp563xx = calloc(1, sizeof(struct dsp563xx_common));
-
-       dsp563xx->jtag_info.tap = target->tap;
-       target->arch_info = dsp563xx;
-       dsp563xx->read_core_reg = dsp563xx_read_core_reg;
-       dsp563xx->write_core_reg = dsp563xx_write_core_reg;
-
-       return ERROR_OK;
-}
-
-int dsp563xx_get_core_reg(struct reg *reg)
-{
-       int retval = 0;
-
-       LOG_DEBUG("%s", __FUNCTION__);
-
        struct dsp563xx_core_reg *dsp563xx_reg = reg->arch_info;
        struct target *target = dsp563xx_reg->target;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
+       LOG_DEBUG("%s", __FUNCTION__);
+
        if (target->state != TARGET_HALTED)
        {
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       retval = dsp563xx->read_core_reg(target, dsp563xx_reg->num);
-
-       return retval;
+       return dsp563xx->read_core_reg(target, dsp563xx_reg->num);
 }
 
-int dsp563xx_set_core_reg(struct reg *reg, uint8_t * buf)
+static int dsp563xx_set_core_reg(struct reg *reg, uint8_t * buf)
 {
        LOG_DEBUG("%s", __FUNCTION__);
 
@@ -334,79 +414,21 @@ int dsp563xx_set_core_reg(struct reg *reg, uint8_t * buf)
        return ERROR_OK;
 }
 
-int dsp563xx_save_context(struct target *target)
-{
-       int i;
-       uint32_t data = 0;
-       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
-       struct dsp563xx_core_reg *arch_info;
-
-       for (i = 0; i < DSP563XX_NUMCOREREGS - 1; i++)
-       {
-
-//              if (!dsp563xx->core_cache->reg_list[i].valid)
-               {
-                       arch_info = dsp563xx->core_cache->reg_list[i].arch_info;
-                       dsp563xx_once_execute_dw_ir(target->tap, arch_info->r_cmd,
-                                                   0xfffffc);
-                       dsp563xx_once_execute_sw_ir(target->tap, 0x000000);
-                       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OGDBR,
-                                              &data);
-                       dsp563xx->core_regs[i] = data;
-                       dsp563xx->read_core_reg(target, i);
-               }
-       }
-
-       /* read pc */
-       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPABEX, &data);
-       dsp563xx->core_regs[i] = data;
-       dsp563xx->read_core_reg(target, i);
-
-       return ERROR_OK;
-}
-
-int dsp563xx_restore_context(struct target *target)
-{
-       int i;
-       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
-       struct dsp563xx_core_reg *arch_info;
-
-       for (i = 0; i < DSP563XX_NUMCOREREGS - 1; i++)
-       {
-               if (dsp563xx->core_cache->reg_list[i].dirty)
-               {
-                       arch_info = dsp563xx->core_cache->reg_list[i].arch_info;
-
-                       dsp563xx->write_core_reg(target, i);
-
-                       dsp563xx_once_execute_dw_ir(target->tap, arch_info->w_cmd,
-                                                   dsp563xx->core_regs[i]);
-                       dsp563xx_once_execute_sw_ir(target->tap, 0x000000);
-               }
-       }
-
-       return ERROR_OK;
-}
-
 static const struct reg_arch_type dsp563xx_reg_type = {
        .get = dsp563xx_get_core_reg,
        .set = dsp563xx_set_core_reg,
 };
 
-int dsp563xx_init_target(struct command_context *cmd_ctx, struct target *target)
+static void dsp563xx_build_reg_cache(struct target *target)
 {
-       /* get pointers to arch-specific information */
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
        struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
        struct reg_cache *cache = malloc(sizeof(struct reg_cache));
        struct reg *reg_list = malloc(sizeof(struct reg) * DSP563XX_NUMCOREREGS);
-       struct dsp563xx_core_reg *arch_info =
-               malloc(sizeof(struct dsp563xx_core_reg) * DSP563XX_NUMCOREREGS);
+       struct dsp563xx_core_reg *arch_info = malloc(sizeof(struct dsp563xx_core_reg) * DSP563XX_NUMCOREREGS);
        int i;
 
-       LOG_DEBUG("%s", __FUNCTION__);
-
        /* Build the process context cache */
        cache->name = "dsp563xx registers";
        cache->next = NULL;
@@ -420,551 +442,1399 @@ int dsp563xx_init_target(struct command_context *cmd_ctx, struct target *target)
                arch_info[i].num = dsp563xx_regs[i].id;
                arch_info[i].name = dsp563xx_regs[i].name;
                arch_info[i].size = dsp563xx_regs[i].bits;
-               arch_info[i].r_cmd = dsp563xx_regs[i].r_cmd;
-               arch_info[i].w_cmd = dsp563xx_regs[i].w_cmd;
+               arch_info[i].eame = dsp563xx_regs[i].eame;
+               arch_info[i].instr_mask = dsp563xx_regs[i].instr_mask;
                arch_info[i].target = target;
                arch_info[i].dsp563xx_common = dsp563xx;
                reg_list[i].name = dsp563xx_regs[i].name;
-               reg_list[i].size = dsp563xx_regs[i].bits;
+               reg_list[i].size = 32; //dsp563xx_regs[i].bits;
                reg_list[i].value = calloc(1, 4);
                reg_list[i].dirty = 0;
                reg_list[i].valid = 0;
                reg_list[i].type = &dsp563xx_reg_type;
                reg_list[i].arch_info = &arch_info[i];
        }
-
-       return ERROR_OK;
 }
 
-int dsp563xx_arch_state(struct target *target)
+static int dsp563xx_read_register(struct target *target, int num, int force);
+static int dsp563xx_write_register(struct target *target, int num, int force);
+
+static int dsp563xx_reg_read_high_io(struct target *target, uint32_t instr_mask, uint32_t * data)
 {
-       LOG_DEBUG("%s", __FUNCTION__);
+       int err;
+       uint32_t instr;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+
+       /* we use r0 to store temporary data */
+       if (!dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].valid)
+               dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_R0);
+
+       /* move source memory to r0 */
+       instr = INSTR_MOVEP_REG_HIO(MEM_X, 0, EAME_R0, instr_mask);
+       if ((err = dsp563xx_once_execute_sw_ir(target->tap, 0, instr)) != ERROR_OK)
+               return err;
+       /* move r0 to debug register */
+       instr = INSTR_MOVEP_REG_HIO(MEM_X, 1, EAME_R0, 0xfffffc);
+       if ((err = dsp563xx_once_execute_sw_ir(target->tap, 1, instr)) != ERROR_OK)
+               return err;
+       /* read debug register */
+       if ((err = dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OGDBR, data)) != ERROR_OK)
+               return err;
+       /* r0 is no longer valid on target */
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].dirty = 1;
+
        return ERROR_OK;
 }
 
-int dsp563xx_jtag_status(struct target *target, uint8_t * status)
+static int dsp563xx_reg_write_high_io(struct target *target, uint32_t instr_mask, uint32_t data)
 {
-       uint8_t ir_in;
+       int err;
+       uint32_t instr;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
-       ir_in = 0;
+       /* we use r0 to store temporary data */
+       if (!dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].valid)
+               dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_R0);
 
-       dsp563xx_jtag_sendinstr(target->tap, &ir_in, JTAG_INSTR_ENABLE_ONCE);
-       dsp563xx_execute_queue();
+       /* move data to r0 */
+       if ((err = dsp563xx_once_execute_dw_ir(target->tap, 0, 0x60F400, data)) != ERROR_OK)
+               return err;
+       /* move r0 to destination memory */
+       instr = INSTR_MOVEP_REG_HIO(MEM_X, 1, EAME_R0, instr_mask);
+       if ((err = dsp563xx_once_execute_sw_ir(target->tap, 1, instr)) != ERROR_OK)
+               return err;
 
-       *status = ir_in;
+       /* r0 is no longer valid on target */
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].dirty = 1;
 
        return ERROR_OK;
 }
 
-int dsp563xx_jtag_debug_request(struct target *target)
+static int dsp563xx_reg_read(struct target *target, uint32_t eame, uint32_t * data)
 {
-       uint8_t ir_in = 0;
-       uint32_t retry = 0;
-
-       while (ir_in != JTAG_STATUS_DEBUG)
-       {
-               dsp563xx_jtag_sendinstr(target->tap, &ir_in,
-                                       JTAG_INSTR_DEBUG_REQUEST);
-               dsp563xx_execute_queue();
-               LOG_DEBUG("JTAG CMD 7 res: %02X", ir_in);
-               dsp563xx_jtag_sendinstr(target->tap, &ir_in, JTAG_INSTR_ENABLE_ONCE);
-               dsp563xx_execute_queue();
-               LOG_DEBUG("JTAG CMD 6 res: %02X", ir_in);
-
-               if (retry++ == 100)
-                       return ERROR_TARGET_FAILURE;
-       }
+       int err;
+       uint32_t instr;
+
+       instr = INSTR_MOVEP_REG_HIO(MEM_X, 1, eame, 0xfffffc);
+       if ((err = dsp563xx_once_execute_sw_ir(target->tap, 0, instr)) != ERROR_OK)
+               return err;
+       /* nop */
+       if ((err = dsp563xx_once_execute_sw_ir(target->tap, 1, 0x000000)) != ERROR_OK)
+               return err;
+       /* read debug register */
+       return dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OGDBR, data);
+}
 
-       if (ir_in != JTAG_STATUS_DEBUG)
-       {
-               return ERROR_TARGET_FAILURE;
-       }
+static int dsp563xx_reg_write(struct target *target, uint32_t instr_mask, uint32_t data)
+{
+       int err;
 
-       return ERROR_OK;
+       if ((err = dsp563xx_once_execute_dw_ir(target->tap, 0, instr_mask, data)) != ERROR_OK)
+               return err;
+       /* nop */
+       return dsp563xx_once_execute_sw_ir(target->tap, 1, 0x000000);
 }
 
-int dsp563xx_poll(struct target *target)
+static int dsp563xx_reg_pc_read(struct target *target)
 {
-       uint8_t jtag_status;
-       uint32_t once_status;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
-       dsp563xx_jtag_status(target, &jtag_status);
+       /* pc was changed, nothing todo */
+       if (dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_PC].dirty)
+               return ERROR_OK;
 
-       if ((jtag_status & 1) != 1)
+       /* conditional branch check */
+       if ( once_regs[ONCE_REG_IDX_OPABDR].reg == once_regs[ONCE_REG_IDX_OPABEX].reg )
        {
-               target->state = TARGET_UNKNOWN;
-               LOG_ERROR
-                       ("jtag status contains invalid mode value - communication failure");
-               return ERROR_TARGET_FAILURE;
-       }
+               if ( (once_regs[ONCE_REG_IDX_OPABF11].reg & 1) == 0 )
+               {
+                       LOG_DEBUG("%s conditional branch not supported yet", __FUNCTION__);
 
-       if (jtag_status != JTAG_STATUS_DEBUG)
-       {
-               target->state = TARGET_RUNNING;
+                       /* TODO: use disassembly to set correct pc offset */
+                       dsp563xx->core_regs[DSP563XX_REG_IDX_PC] = (once_regs[ONCE_REG_IDX_OPABF11].reg >> 1) & 0x00FFFFFF;
+               }
+               else
+               {
+                       if ( once_regs[ONCE_REG_IDX_OPABEX].reg == once_regs[ONCE_REG_IDX_OPABFR].reg )
+                       {
+                               dsp563xx->core_regs[DSP563XX_REG_IDX_PC] = once_regs[ONCE_REG_IDX_OPABEX].reg;
+                       }
+                       else
+                       {
+                               dsp563xx->core_regs[DSP563XX_REG_IDX_PC] = once_regs[ONCE_REG_IDX_OPABEX].reg - 1;
+                       }
+               }
        }
-
-       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OSCR, &once_status);
-
-       if ((once_status & DSP563XX_ONCE_OSCR_DEBUG_M) == DSP563XX_ONCE_OSCR_DEBUG_M)
+       else
        {
-               target->state = TARGET_HALTED;
-
+               dsp563xx->core_regs[DSP563XX_REG_IDX_PC] = once_regs[ONCE_REG_IDX_OPABEX].reg;
        }
 
+       dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_PC);
+
        return ERROR_OK;
 }
 
-int dsp563xx_halt(struct target *target)
+static int dsp563xx_reg_ssh_read(struct target *target)
 {
-       uint8_t jtag_status;
-       uint32_t once_status;
+       int err;
+       uint32_t sp;
+       struct dsp563xx_core_reg *arch_info;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
-       if (target->state == TARGET_HALTED)
+       arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SSH].arch_info;
+
+       /* get a valid stack pointer */
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SP, 0)) != ERROR_OK)
+               return err;
+       sp = dsp563xx->core_regs[DSP563XX_REG_IDX_SP];
+       if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_SP, 0)) != ERROR_OK)
+               return err;
+
+       /* get a valid stack count */
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SC, 0)) != ERROR_OK)
+               return err;
+
+       if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_SC, 0)) != ERROR_OK)
+               return err;
+
+       /* get a valid extended pointer */
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_EP, 0)) != ERROR_OK)
+               return err;
+
+       if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_EP, 0)) != ERROR_OK)
+               return err;
+
+       if (!sp)
        {
-               LOG_DEBUG("target was already halted");
-               return ERROR_OK;
+               sp = 0x00FFFFFF;
        }
-
-       if (target->state == TARGET_UNKNOWN)
+       else
        {
-               LOG_WARNING("target was in unknown state when halt was requested");
+               if ((err = dsp563xx_reg_read(target, arch_info->eame, &sp)) != ERROR_OK)
+                       return err;
+
+               if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_SC, 1)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_SP, 1)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_EP, 1)) != ERROR_OK)
+                       return err;
        }
 
-//      if ( jtag_status != 0x0d )
-       {
-               dsp563xx_jtag_debug_request(target);
+       dsp563xx->core_regs[DSP563XX_REG_IDX_SSH] = sp;
+       dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_SSH);
 
-               /* store pipeline register */
-               dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPILR,
-                                      &dsp563xx->pipeline_context.once_opilr);
-               dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPDBR,
-                                      &dsp563xx->pipeline_context.once_opdbr);
+       return ERROR_OK;
+}
 
-               dsp563xx_save_context(target);
+static int dsp563xx_reg_ssh_write(struct target *target)
+{
+       int err;
+       uint32_t sp;
+       struct dsp563xx_core_reg *arch_info;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
-               dsp563xx_jtag_status(target, &jtag_status);
-               LOG_DEBUG("%02X", jtag_status);
-               dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OSCR,
-                                      &once_status);
-               LOG_DEBUG("%02X", once_status);
-       }
+       arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SSH].arch_info;
 
-       LOG_DEBUG("target->state: %s", target_state_name(target));
+       /* get a valid stack pointer */
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SP, 0)) != ERROR_OK)
+               return err;
+       sp = dsp563xx->core_regs[DSP563XX_REG_IDX_SP];
 
-       LOG_DEBUG("%s", __FUNCTION__);
+       if (sp)
+       {
+               sp--;
+               /* write new stackpointer */
+               dsp563xx->core_regs[DSP563XX_REG_IDX_SP] = sp;
+               if ((err = dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_SP)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_write_register(target, DSP563XX_REG_IDX_SP, 1)) != ERROR_OK)
+                       return err;
+
+               if ((err = dsp563xx_reg_write(target, arch_info->instr_mask, dsp563xx->core_regs[DSP563XX_REG_IDX_SSH])) != ERROR_OK)
+                       return err;
+
+               if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SP, 1)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SSH, 1)) != ERROR_OK)
+                       return err;
+       }
 
        return ERROR_OK;
 }
 
-#define DSP563XX_ASM_CMD_JUMP  0x0AF080
-
-int dsp563xx_resume(struct target *target, int current, uint32_t address,
-                   int handle_breakpoints, int debug_execution)
+static int dsp563xx_reg_ssl_read(struct target *target)
 {
+       int err;
+       uint32_t sp;
+       struct dsp563xx_core_reg *arch_info;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
-       LOG_DEBUG("%s", __FUNCTION__);
+       arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SSL].arch_info;
 
-       dsp563xx_restore_context(target);
+       /* get a valid stack pointer */
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SP, 0)) != ERROR_OK)
+               return err;
+       sp = dsp563xx->core_regs[DSP563XX_REG_IDX_SP];
 
-       if (current)
+       if (!sp)
        {
-               /* restore pipeline registers and go */
-               dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OPILR,
-                                       dsp563xx->pipeline_context.once_opilr);
-               dsp563xx_once_reg_write(target->tap,
-                                       DSP563XX_ONCE_OPDBR | DSP563XX_ONCE_OCR_EX |
-                                       DSP563XX_ONCE_OCR_GO,
-                                       dsp563xx->pipeline_context.once_opdbr);
+               sp = 0x00FFFFFF;
        }
        else
        {
-               /* set to go register and jump */
-               dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OPDBR,
-                                       DSP563XX_ASM_CMD_JUMP);
-               dsp563xx_once_reg_write(target->tap,
-                                       DSP563XX_ONCE_PDBGOTO | DSP563XX_ONCE_OCR_EX
-                                       | DSP563XX_ONCE_OCR_GO, address);
+               if ((err = dsp563xx_reg_read(target, arch_info->eame, &sp)) != ERROR_OK)
+                       return err;
        }
 
-       target->state = TARGET_RUNNING;
+       dsp563xx->core_regs[DSP563XX_REG_IDX_SSL] = sp;
+       dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_SSL);
 
        return ERROR_OK;
 }
 
-int dsp563xx_step(struct target *target, int current, uint32_t address,
-                 int handle_breakpoints)
+static int dsp563xx_read_register(struct target *target, int num, int force)
 {
-       uint32_t once_status;
-       uint32_t dr_in, cnt;
+       int err = ERROR_OK;
+       uint32_t data = 0;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+       struct dsp563xx_core_reg *arch_info;
 
-       if (target->state != TARGET_HALTED)
+       if (force)
+               dsp563xx->core_cache->reg_list[num].valid = 0;
+
+       if (!dsp563xx->core_cache->reg_list[num].valid)
        {
-               LOG_DEBUG("target was not halted");
-               return ERROR_OK;
-       }
+               arch_info = dsp563xx->core_cache->reg_list[num].arch_info;
 
-       LOG_DEBUG("%s %08X %08X", __FUNCTION__, current, address);
+               switch (arch_info->num)
+               {
+                       case DSP563XX_REG_IDX_SSH:
+                               err = dsp563xx_reg_ssh_read(target);
+                               break;
+                       case DSP563XX_REG_IDX_SSL:
+                               err = dsp563xx_reg_ssl_read(target);
+                               break;
+                       case DSP563XX_REG_IDX_PC:
+                               err = dsp563xx_reg_pc_read(target);
+                               break;
+                       case DSP563XX_REG_IDX_IPRC:
+                       case DSP563XX_REG_IDX_IPRP:
+                       case DSP563XX_REG_IDX_BCR:
+                       case DSP563XX_REG_IDX_DCR:
+                       case DSP563XX_REG_IDX_AAR0:
+                       case DSP563XX_REG_IDX_AAR1:
+                       case DSP563XX_REG_IDX_AAR2:
+                       case DSP563XX_REG_IDX_AAR3:
+                               err = dsp563xx_reg_read_high_io(target, arch_info->instr_mask, &data);
+                               if (err == ERROR_OK)
+                               {
+                                       dsp563xx->core_regs[num] = data;
+                                       dsp563xx->read_core_reg(target, num);
+                               }
+                               break;
+                       default:
+                               err = dsp563xx_reg_read(target, arch_info->eame, &data);
+                               if (err == ERROR_OK)
+                               {
+                                       dsp563xx->core_regs[num] = data;
+                                       dsp563xx->read_core_reg(target, num);
+                               }
+                               break;
+               }
 
-       dsp563xx_jtag_debug_request(target);
+       }
 
-       dsp563xx_restore_context(target);
+       return err;
+}
 
-       /* reset trace mode */
-       dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OSCR, 0x000000);
-       /* enable trace mode */
-       dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OSCR,
-                               DSP563XX_ONCE_OSCR_TME);
+static int dsp563xx_write_register(struct target *target, int num, int force)
+{
+       int err = ERROR_OK;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+       struct dsp563xx_core_reg *arch_info;
 
-       cnt = 0;
+       if (force)
+               dsp563xx->core_cache->reg_list[num].dirty = 1;
 
-       /* on JUMP we need one extra cycle */
-       if (!current)
-               cnt++;
+       if (dsp563xx->core_cache->reg_list[num].dirty)
+       {
+               arch_info = dsp563xx->core_cache->reg_list[num].arch_info;
 
-       /* load step counter with N-1 */
-       dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OTC, cnt);
+               dsp563xx->write_core_reg(target, num);
 
-       if (current)
-       {
-               /* restore pipeline registers and go */
-               dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OPILR,
-                                       dsp563xx->pipeline_context.once_opilr);
-               dsp563xx_once_reg_write(target->tap,
-                                       DSP563XX_ONCE_OPDBR | DSP563XX_ONCE_OCR_EX |
-                                       DSP563XX_ONCE_OCR_GO,
-                                       dsp563xx->pipeline_context.once_opdbr);
-       }
-       else
-       {
-               /* set to go register and jump */
-               dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OPDBR,
-                                       DSP563XX_ASM_CMD_JUMP);
-               dsp563xx_once_reg_write(target->tap,
-                                       DSP563XX_ONCE_PDBGOTO | DSP563XX_ONCE_OCR_EX
-                                       | DSP563XX_ONCE_OCR_GO, address);
+               switch (arch_info->num)
+               {
+                       case DSP563XX_REG_IDX_SSH:
+                               err = dsp563xx_reg_ssh_write(target);
+                               break;
+                       case DSP563XX_REG_IDX_PC:
+                               /* pc is updated on resume, no need to write it here */
+                               break;
+                       case DSP563XX_REG_IDX_IPRC:
+                       case DSP563XX_REG_IDX_IPRP:
+                       case DSP563XX_REG_IDX_BCR:
+                       case DSP563XX_REG_IDX_DCR:
+                       case DSP563XX_REG_IDX_AAR0:
+                       case DSP563XX_REG_IDX_AAR1:
+                       case DSP563XX_REG_IDX_AAR2:
+                       case DSP563XX_REG_IDX_AAR3:
+                               err = dsp563xx_reg_write_high_io(target, arch_info->instr_mask, dsp563xx->core_regs[num]);
+                               break;
+                       default:
+                               err = dsp563xx_reg_write(target, arch_info->instr_mask, dsp563xx->core_regs[num]);
+
+                               if ((err == ERROR_OK) && (arch_info->num == DSP563XX_REG_IDX_SP))
+                               {
+                                       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SSH].valid = 0;
+                                       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SSL].valid = 0;
+                               }
+
+                               break;
+               }
        }
 
-       while (1)
+       return err;
+}
+
+static int dsp563xx_save_context(struct target *target)
+{
+       int i, err = ERROR_OK;
+
+       for (i = 0; i < DSP563XX_NUMCOREREGS; i++)
        {
-               dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OSCR,
-                                      &once_status);
+               if ((err = dsp563xx_read_register(target, i, 0)) != ERROR_OK)
+                       break;
+       }
 
-               if (once_status & DSP563XX_ONCE_OSCR_TO)
-               {
-                       /* store pipeline register */
-                       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPILR,
-                                              &dsp563xx->pipeline_context.
-                                              once_opilr);
-                       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPDBR,
-                                              &dsp563xx->pipeline_context.
-                                              once_opdbr);
-
-                       dsp563xx_save_context(target);
-
-                       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPABFR,
-                                              &dr_in);
-                       LOG_DEBUG("%08X", dr_in);
-                       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPABDR,
-                                              &dr_in);
-                       LOG_DEBUG("%08X", dr_in);
-                       dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OPABEX,
-                                              &dr_in);
-                       LOG_DEBUG("%08X", dr_in);
+       return err;
+}
 
-                       /* reset trace mode */
-                       dsp563xx_once_reg_write(target->tap, DSP563XX_ONCE_OSCR,
-                                               0x000000);
+static int dsp563xx_restore_context(struct target *target)
+{
+       int i, err = ERROR_OK;
 
+       for (i = 0; i < DSP563XX_NUMCOREREGS; i++)
+       {
+               if ((err = dsp563xx_write_register(target, i, 0)) != ERROR_OK)
                        break;
-               }
        }
 
-       return ERROR_OK;
+       return err;
 }
 
-int dsp563xx_assert_reset(struct target *target)
+static void dsp563xx_invalidate_x_context(struct target *target, uint32_t addr_start, uint32_t addr_end )
 {
-       target->state = TARGET_RESET;
+       int i;
+       struct dsp563xx_core_reg *arch_info;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
 
-       LOG_DEBUG("%s", __FUNCTION__);
-       return ERROR_OK;
+       if ( addr_start > ASM_REG_W_IPRC )
+               return;
+       if ( addr_start < ASM_REG_W_AAR3 )
+               return;
+
+       for (i = DSP563XX_REG_IDX_IPRC; i < DSP563XX_NUMCOREREGS; i++)
+       {
+               arch_info = dsp563xx->core_cache->reg_list[i].arch_info;
+
+               if ( (arch_info->instr_mask >= addr_start) &&
+                    (arch_info->instr_mask <= addr_end))
+               {
+                       dsp563xx->core_cache->reg_list[i].valid = 0;
+                       dsp563xx->core_cache->reg_list[i].dirty = 0;
+               }
+       }
 }
 
-int dsp563xx_deassert_reset(struct target *target)
+static int dsp563xx_target_create(struct target *target, Jim_Interp * interp)
 {
-       target->state = TARGET_RUNNING;
+       struct dsp563xx_common *dsp563xx = calloc(1, sizeof(struct dsp563xx_common));
+
+       if (!dsp563xx)
+               return ERROR_INVALID_ARGUMENTS;
+
+       dsp563xx->jtag_info.tap = target->tap;
+       target->arch_info = dsp563xx;
+       dsp563xx->read_core_reg = dsp563xx_read_core_reg;
+       dsp563xx->write_core_reg = dsp563xx_write_core_reg;
 
-       LOG_DEBUG("%s", __FUNCTION__);
        return ERROR_OK;
 }
 
-int dsp563xx_soft_reset_halt(struct target *target)
+static int dsp563xx_init_target(struct command_context *cmd_ctx, struct target *target)
 {
        LOG_DEBUG("%s", __FUNCTION__);
+
+       dsp563xx_build_reg_cache(target);
+
        return ERROR_OK;
 }
 
-/*
-* 000000                       nop
-* 46F400 AABBCC                move              #$aabbcc,y0
-* 60F400 AABBCC                move              #$aabbcc,r0
-* 467000 AABBCC                move              y0,x:AABBCC
-* 607000 AABBCC                move              r0,x:AABBCC
-
-* 46E000               move              x:(r0),y0
-* 4EE000               move              y:(r0),y0
-* 07E086               move              p:(r0),y0
-
-* 0450B9               move              sr,r0
-* 0446BA               move              omr,y0
-* 0446BC               move              ssh,y0
-* 0446BD               move              ssl,y0
-* 0446BE               move              la,y0
-* 0446BF               move              lc,y0
-* 
-* 61F000 AABBCC                move              x:AABBCC,r1
-* 076190               movem             r0,p:(r1)
-*
-*/
-int dsp563xx_read_memory_p(struct target *target, uint32_t address,
-                          uint32_t size, uint32_t count, uint8_t * buffer)
+static int dsp563xx_examine(struct target *target)
 {
-       uint32_t i, x;
-       uint32_t data;
-       uint8_t *b;
+       uint32_t chip;
 
-       LOG_DEBUG("address: 0x%8.8" PRIx32 ", size: 0x%8.8" PRIx32 ", count: 0x%8.8"
-                 PRIx32, address, size, count);
-
-       if (target->state != TARGET_HALTED)
+       if (target->tap->hasidcode == false)
        {
-               LOG_WARNING("target not halted");
-               return ERROR_TARGET_NOT_HALTED;
-       }
+               LOG_ERROR("no IDCODE present on device");
 
-       x = count;
+               return ERROR_INVALID_ARGUMENTS;
+       }
 
-       for (i = 0; i < x; i++)
+       if (!target_was_examined(target))
        {
-               dsp563xx_once_execute_dw_ir_nq(target->tap, 0x60F400, address + i);
-               dsp563xx_once_execute_sw_ir_nq(target->tap, 0x07E086);
-               dsp563xx_once_execute_dw_ir_nq(target->tap, 0x467000, 0xfffffc);
-               dsp563xx_execute_queue();
+               target_set_examined(target);
 
-               dsp563xx_once_reg_read(target->tap, DSP563XX_ONCE_OGDBR, &data);
+               /* examine core and chip derivate number */
+               chip = (target->tap->idcode>>12)&0x3ff;
+               /* core number 0 means DSP563XX */
+               if ( ((chip>>5)&0x1f) == 0 )
+                       chip += 300;
 
-               b = buffer + 4 * i;
-               if (size > 0)
-                       *b++ = data >> 0;
-               if (size > 1)
-                       *b++ = data >> 8;
-               if (size > 2)
-                       *b++ = data >> 16;
-               if (size > 3)
-                       *b++ = 0x00;
+               LOG_INFO("DSP56%03d device found",chip);
        }
 
        return ERROR_OK;
 }
 
-int dsp563xx_write_memory_p(struct target *target, uint32_t address, uint32_t size,
-                           uint32_t count, uint8_t * buffer)
+static int dsp563xx_arch_state(struct target *target)
 {
-       uint32_t i, x;
-       uint32_t data;
-       uint8_t *b;
+       LOG_DEBUG("%s", __FUNCTION__);
+       return ERROR_OK;
+}
 
-       LOG_DEBUG("address: 0x%8.8" PRIx32 ", size: 0x%8.8" PRIx32 ", count: 0x%8.8"
-                 PRIx32 "", address, size, count);
+#define DSP563XX_SR_SA (1<<17)
+#define DSP563XX_SR_SC (1<<13)
 
-       if (target->state != TARGET_HALTED)
-       {
-               LOG_WARNING("target not halted");
-               return ERROR_TARGET_NOT_HALTED;
+static int dsp563xx_debug_once_init(struct target *target)
+{
+       return dsp563xx_once_read_register(target->tap, 1, once_regs, DSP563XX_NUMONCEREGS);
+}
+
+static int dsp563xx_debug_init(struct target *target)
+{
+       int err;
+       uint32_t sr;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+       struct dsp563xx_core_reg *arch_info;
+
+       if ((err = dsp563xx_debug_once_init(target)) != ERROR_OK)
+               return err;
+
+       arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SR].arch_info;
+
+       /* check 24bit mode */
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_SR, 0)) != ERROR_OK)
+               return err;
+
+       sr = dsp563xx->core_regs[DSP563XX_REG_IDX_SR];
+
+       if (sr & (DSP563XX_SR_SA | DSP563XX_SR_SC))
+       {
+               sr &= ~(DSP563XX_SR_SA | DSP563XX_SR_SC);
+
+               if ((err = dsp563xx_once_execute_dw_ir(target->tap, 1, arch_info->instr_mask, sr)) != ERROR_OK)
+                       return err;
+               dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_SR].dirty = 1;
        }
 
-       x = count;
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_N0, 0)) != ERROR_OK)
+               return err;
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_N1, 0)) != ERROR_OK)
+               return err;
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_M0, 0)) != ERROR_OK)
+               return err;
+       if ((err = dsp563xx_read_register(target, DSP563XX_REG_IDX_M1, 0)) != ERROR_OK)
+               return err;
 
-       for (i = 0; i < x; i++)
+       if (dsp563xx->core_regs[DSP563XX_REG_IDX_N0] != 0x000000)
        {
-               b = buffer + 4 * i;
+               arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_N0].arch_info;
+               if ((err = dsp563xx_reg_write(target, arch_info->instr_mask, 0x000000)) != ERROR_OK)
+                       return err;
+       }
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_N0].dirty = 1;
 
-               data = 0;
-               if (size > 0)
-                       data = *buffer++;
-               if (size > 1)
-                       data |= (*buffer++) << 8;
-               if (size > 2)
-                       data |= (*buffer++) << 16;
-               if (size > 3)
-                       data |= (*buffer++) << 24;
+       if (dsp563xx->core_regs[DSP563XX_REG_IDX_N1] != 0x000000)
+       {
+               arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_N1].arch_info;
+               if ((err = dsp563xx_reg_write(target, arch_info->instr_mask, 0x000000)) != ERROR_OK)
+                       return err;
+       }
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_N1].dirty = 1;
 
-//              LOG_DEBUG("%08X", data);
+       if (dsp563xx->core_regs[DSP563XX_REG_IDX_M0] != 0xffffff)
+       {
+               arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_M0].arch_info;
+               if ((err = dsp563xx_reg_write(target, arch_info->instr_mask, 0xffffff)) != ERROR_OK)
+                       return err;
+       }
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_M0].dirty = 1;
 
-               dsp563xx_once_execute_dw_ir_nq(target->tap, 0x61F400, address + i);
-               dsp563xx_once_execute_dw_ir_nq(target->tap, 0x60F400, data);
-               dsp563xx_once_execute_sw_ir_nq(target->tap, 0x076190);
-               dsp563xx_execute_queue();
+       if (dsp563xx->core_regs[DSP563XX_REG_IDX_M1] != 0xffffff)
+       {
+               arch_info = dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_M1].arch_info;
+               if ((err = dsp563xx_reg_write(target, arch_info->instr_mask, 0xffffff)) != ERROR_OK)
+                       return err;
        }
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_M1].dirty = 1;
+
+       if ((err = dsp563xx_save_context(target)) != ERROR_OK)
+               return err;
 
        return ERROR_OK;
 }
 
-int dsp563xx_jtag_senddat(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out,
-                         int len)
+static int dsp563xx_jtag_debug_request(struct target *target)
 {
-       return dsp563xx_write_dr_u32(tap, dr_in, dr_out, len, 1);
+       return dsp563xx_once_request_debug(target->tap, target->state == TARGET_RESET);
 }
 
-int dsp563xx_jtag_sendinstr(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out)
+static int dsp563xx_poll(struct target *target)
 {
-       return dsp563xx_write_ir_u8(tap, ir_in, ir_out, DSP563XX_JTAG_INS_LEN, 1);
+       int err;
+       uint32_t once_status;
+       int state;
+
+       state = dsp563xx_once_target_status(target->tap);
+
+       if (state == TARGET_UNKNOWN)
+       {
+               target->state = state;
+               LOG_ERROR("jtag status contains invalid mode value - communication failure");
+               return ERROR_TARGET_FAILURE;
+       }
+
+       if ((err = dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OSCR, &once_status)) != ERROR_OK)
+               return err;
+
+       if ((once_status & DSP563XX_ONCE_OSCR_DEBUG_M) == DSP563XX_ONCE_OSCR_DEBUG_M)
+       {
+               if (target->state != TARGET_HALTED)
+               {
+                       target->state = TARGET_HALTED;
+
+                       if ((err = dsp563xx_debug_init(target)) != ERROR_OK)
+                               return err;
+
+                       target_call_event_callbacks(target, TARGET_EVENT_HALTED);
+
+                       LOG_DEBUG("target->state: %s (%x)", target_state_name(target),once_status);
+               }
+       }
+
+       return ERROR_OK;
 }
 
-/* IR and DR functions */
-int dsp563xx_write_ir(struct jtag_tap *tap, uint8_t * ir_in, uint8_t * ir_out,
-                     int ir_len, int rti)
+static int dsp563xx_halt(struct target *target)
 {
-       if (NULL == tap)
+       int err;
+
+       LOG_DEBUG("%s", __FUNCTION__);
+
+       if (target->state == TARGET_HALTED)
        {
-               LOG_ERROR("invalid tap");
-               return ERROR_FAIL;
+               LOG_DEBUG("target was already halted");
+               return ERROR_OK;
        }
-       if (ir_len != tap->ir_length)
+
+       if (target->state == TARGET_UNKNOWN)
        {
-               LOG_ERROR("invalid ir_len");
-               return ERROR_FAIL;
+               LOG_WARNING("target was in unknown state when halt was requested");
        }
 
+       if ((err = dsp563xx_jtag_debug_request(target)) != ERROR_OK)
+               return err;
+
+       target->debug_reason = DBG_REASON_DBGRQ;
+
+       return ERROR_OK;
+}
+
+static int dsp563xx_resume(struct target *target, int current, uint32_t address, int handle_breakpoints, int debug_execution)
+{
+       int err;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+
+       /* check if pc was changed and resume want to execute the next address
+        * if pc was changed from gdb or other interface we will
+        * jump to this address and don't execute the next address
+        * this will not affect the resume command with an address argument
+        * because current is set to zero then
+        */
+       if ( current && dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_PC].dirty )
        {
-               struct scan_field field[1];
+               dsp563xx_write_core_reg(target,DSP563XX_REG_IDX_PC);
+               address = dsp563xx->core_regs[DSP563XX_REG_IDX_PC];
+               current = 0;
+       }
+
+       LOG_DEBUG("%s %08X %08X", __FUNCTION__, current, (unsigned) address);
 
-               field[0].tap = tap;
-               field[0].num_bits = tap->ir_length;
-               field[0].out_value = ir_out;
-               field[0].in_value = ir_in;
-               jtag_add_plain_ir_scan(ARRAY_SIZE(field), field,
-                                      jtag_set_end_state(TAP_IDLE));
+       if ((err = dsp563xx_restore_context(target)) != ERROR_OK)
+               return err;
+       register_cache_invalidate(dsp563xx->core_cache);
+
+       if (current)
+       {
+               /* restore pipeline registers and go */
+               if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OPDBR, once_regs[ONCE_REG_IDX_OPILR].reg)) != ERROR_OK)
+                       return err;
+               if ((err =
+                    dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OPDBR | DSP563XX_ONCE_OCR_EX | DSP563XX_ONCE_OCR_GO,
+                                            once_regs[ONCE_REG_IDX_OPDBR].reg)) != ERROR_OK)
+                       return err;
+       }
+       else
+       {
+               /* set to go register and jump */
+               if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OPDBR, INSTR_JUMP)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_PDBGOTO | DSP563XX_ONCE_OCR_EX | DSP563XX_ONCE_OCR_GO, address)) != ERROR_OK)
+                       return err;
        }
 
+       target->state = TARGET_RUNNING;
+
        return ERROR_OK;
 }
 
-int dsp563xx_write_dr(struct jtag_tap *tap, uint8_t * dr_in, uint8_t * dr_out,
-                     int dr_len, int rti)
+static int dsp563xx_step_ex(struct target *target, int current, uint32_t address, int handle_breakpoints, int steps)
 {
-       if (NULL == tap)
+       int err;
+       uint32_t once_status;
+       uint32_t dr_in, cnt;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+
+       if (target->state != TARGET_HALTED)
+       {
+               LOG_DEBUG("target was not halted");
+               return ERROR_OK;
+       }
+
+       /* check if pc was changed and step want to execute the next address
+        * if pc was changed from gdb or other interface we will
+        * jump to this address and don't execute the next address
+        * this will not affect the step command with an address argument
+        * because current is set to zero then
+        */
+       if ( current && dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_PC].dirty )
+       {
+               dsp563xx_write_core_reg(target,DSP563XX_REG_IDX_PC);
+               address = dsp563xx->core_regs[DSP563XX_REG_IDX_PC];
+               current = 0;
+       }
+
+       LOG_DEBUG("%s %08X %08X", __FUNCTION__, current, (unsigned) address);
+
+       if ((err = dsp563xx_jtag_debug_request(target)) != ERROR_OK)
+               return err;
+       if ((err = dsp563xx_restore_context(target)) != ERROR_OK)
+               return err;
+
+       /* reset trace mode */
+       if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OSCR, 0x000000)) != ERROR_OK)
+               return err;
+       /* enable trace mode */
+       if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OSCR, DSP563XX_ONCE_OSCR_TME)) != ERROR_OK)
+               return err;
+
+       cnt = steps;
+
+       /* on JUMP we need one extra cycle */
+       if (!current)
+               cnt++;
+
+       /* load step counter with N-1 */
+       if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OTC, cnt)) != ERROR_OK)
+               return err;
+
+       if (current)
        {
-               LOG_ERROR("invalid tap");
-               return ERROR_FAIL;
+               /* restore pipeline registers and go */
+               if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OPDBR, once_regs[ONCE_REG_IDX_OPILR].reg)) != ERROR_OK)
+                       return err;
+               if ((err =
+                    dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OPDBR | DSP563XX_ONCE_OCR_EX | DSP563XX_ONCE_OCR_GO,
+                                            once_regs[ONCE_REG_IDX_OPDBR].reg)) != ERROR_OK)
+                       return err;
+       }
+       else
+       {
+               /* set to go register and jump */
+               if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OPDBR, INSTR_JUMP)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_PDBGOTO | DSP563XX_ONCE_OCR_EX | DSP563XX_ONCE_OCR_GO, address)) != ERROR_OK)
+                       return err;
        }
 
+       while (1)
        {
-               struct scan_field field[1];
+               if ((err = dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OSCR, &once_status)) != ERROR_OK)
+                       return err;
 
-               field[0].tap = tap;
-               field[0].num_bits = dr_len;
-               field[0].out_value = dr_out;
-               field[0].in_value = dr_in;
-               jtag_add_plain_dr_scan(ARRAY_SIZE(field), field,
-                                      jtag_set_end_state(TAP_IDLE));
+               if (once_status & DSP563XX_ONCE_OSCR_TO)
+               {
+                       if ((err = dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OPABFR, &dr_in)) != ERROR_OK)
+                               return err;
+                       LOG_DEBUG("fetch: %08X", (unsigned) dr_in&0x00ffffff);
+                       if ((err = dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OPABDR, &dr_in)) != ERROR_OK)
+                               return err;
+                       LOG_DEBUG("decode: %08X", (unsigned) dr_in&0x00ffffff);
+                       if ((err = dsp563xx_once_reg_read(target->tap, 1, DSP563XX_ONCE_OPABEX, &dr_in)) != ERROR_OK)
+                               return err;
+                       LOG_DEBUG("execute: %08X", (unsigned) dr_in&0x00ffffff);
+
+                       /* reset trace mode */
+                       if ((err = dsp563xx_once_reg_write(target->tap, 1, DSP563XX_ONCE_OSCR, 0x000000)) != ERROR_OK)
+                               return err;
+
+                       register_cache_invalidate(dsp563xx->core_cache);
+                       if ((err = dsp563xx_debug_init(target)) != ERROR_OK)
+                               return err;
+
+                       break;
+               }
        }
 
        return ERROR_OK;
 }
 
-int dsp563xx_write_ir_u8(struct jtag_tap *tap, uint8_t * ir_in, uint8_t ir_out,
-                        int ir_len, int rti)
+static int dsp563xx_step(struct target *target, int current, uint32_t address, int handle_breakpoints)
+{
+       int err;
+
+       if ( (err=dsp563xx_step_ex(target, current, address, handle_breakpoints, 0)) != ERROR_OK )
+       {
+               return err;
+       }
+
+       target->debug_reason = DBG_REASON_SINGLESTEP;
+       target_call_event_callbacks(target, TARGET_EVENT_HALTED);
+
+       return err;
+}
+
+static int dsp563xx_assert_reset(struct target *target)
 {
-       if (ir_len > 8)
+       int retval = 0;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+       enum reset_types jtag_reset_config = jtag_get_reset_config();
+
+       if (jtag_reset_config & RESET_HAS_SRST)
        {
-               LOG_ERROR("ir_len overflow, maxium is 8");
-               return ERROR_FAIL;
+               /* default to asserting srst */
+               if (jtag_reset_config & RESET_SRST_PULLS_TRST)
+               {
+                       jtag_add_reset(1, 1);
+               }
+               else
+               {
+                       jtag_add_reset(0, 1);
+               }
        }
 
-       dsp563xx_write_ir(tap, ir_in, &ir_out, ir_len, rti);
+       target->state = TARGET_RESET;
+       jtag_add_sleep(5000);
+
+       /* registers are now invalid */
+       register_cache_invalidate(dsp563xx->core_cache);
+
+       if (target->reset_halt)
+       {
+               if ((retval = target_halt(target)) != ERROR_OK)
+                       return retval;
+       }
 
+       LOG_DEBUG("%s", __FUNCTION__);
        return ERROR_OK;
 }
 
-int dsp563xx_write_dr_u8(struct jtag_tap *tap, uint8_t * dr_in, uint8_t dr_out,
-                        int dr_len, int rti)
+static int dsp563xx_deassert_reset(struct target *target)
 {
-       if (dr_len > 8)
+       int err;
+
+       /* deassert reset lines */
+       jtag_add_reset(0, 0);
+
+       if ((err = dsp563xx_poll(target)) != ERROR_OK)
+               return err;
+
+       if (target->reset_halt)
        {
-               LOG_ERROR("dr_len overflow, maxium is 8");
-               return ERROR_FAIL;
+               if (target->state == TARGET_HALTED)
+               {
+                       /* after a reset the cpu jmp to the
+                        * reset vector and need 2 cycles to fill
+                        * the cache (fetch,decode,excecute)
+                        */
+                       if ((err = dsp563xx_step_ex(target, 1, 0, 1, 1)) != ERROR_OK)
+                               return err;
+               }
        }
 
-       dsp563xx_write_dr(tap, dr_in, &dr_out, dr_len, rti);
+//      target->state = TARGET_RUNNING;
 
+       LOG_DEBUG("%s", __FUNCTION__);
+       return ERROR_OK;
+}
+
+static int dsp563xx_soft_reset_halt(struct target *target)
+{
+       LOG_DEBUG("%s", __FUNCTION__);
        return ERROR_OK;
 }
 
-int dsp563xx_write_ir_u16(struct jtag_tap *tap, uint16_t * ir_in, uint16_t ir_out,
-                         int ir_len, int rti)
+/* global command context from openocd.c */
+extern struct command_context *global_cmd_ctx;
+
+static int dsp563xx_get_default_memory(void)
 {
-       if (ir_len > 16)
+       Jim_Interp *interp;
+       Jim_Obj * memspace;
+       char * c;
+
+       if ( !global_cmd_ctx )
+               return MEM_P;
+
+       interp = global_cmd_ctx->interp;
+
+       if ( !interp )
+               return MEM_P;
+
+       memspace = Jim_GetGlobalVariableStr(interp,"memspace", JIM_NONE);
+
+       if ( !memspace )
+               return MEM_P;
+
+       c = (char*)Jim_GetString(memspace,NULL);
+
+       if ( !c )
+               return MEM_P;
+
+       switch(c[0])
        {
-               LOG_ERROR("ir_len overflow, maxium is 16");
-               return ERROR_FAIL;
+               case '1':
+                       return MEM_X;
+               case '2':
+                       return MEM_Y;
+               case '3':
+                       return MEM_L;
+               default:
+                       break;
        }
 
-       dsp563xx_write_ir(tap, (uint8_t *) ir_in, (uint8_t *) & ir_out, ir_len, rti);
+       return MEM_P;
+}
+
+static int dsp563xx_read_memory_core(struct target *target, int mem_type, uint32_t address, uint32_t size, uint32_t count, uint8_t * buffer)
+{
+       int err;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+       uint32_t i, x;
+       uint32_t data, move_cmd = 0;
+       uint8_t *b;
+
+       LOG_DEBUG("memtype: %d address: 0x%8.8" PRIx32 ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "", mem_type,address, size, count);
+
+       if (target->state != TARGET_HALTED)
+       {
+               LOG_WARNING("target not halted");
+               return ERROR_TARGET_NOT_HALTED;
+       }
+
+       switch (mem_type)
+       {
+               case MEM_X:
+                       /* TODO: mark effected queued registers */
+                       move_cmd = 0x61d800;
+                       break;
+               case MEM_Y:
+                       move_cmd = 0x69d800;
+                       break;
+               case MEM_P:
+                       move_cmd = 0x07d891;
+                       break;
+               default:
+                       return ERROR_INVALID_ARGUMENTS;
+       }
+
+       /* we use r0 to store temporary data */
+       if (!dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].valid)
+               dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_R0);
+       /* we use r1 to store temporary data */
+       if (!dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R1].valid)
+               dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_R1);
+
+       /* r0 is no longer valid on target */
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].dirty = 1;
+       /* r1 is no longer valid on target */
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R1].dirty = 1;
+
+       x = count;
+       b = buffer;
+
+       if ((err = dsp563xx_once_execute_dw_ir(target->tap, 1, 0x60F400, address)) != ERROR_OK)
+               return err;
+
+       for (i = 0; i < x; i++)
+       {
+               if ((err = dsp563xx_once_execute_sw_ir(target->tap, 0, move_cmd)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_once_execute_sw_ir(target->tap, 0, 0x08D13C)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_once_reg_read(target->tap, 0, DSP563XX_ONCE_OGDBR, (uint32_t*)(void *)b)) != ERROR_OK)
+                       return err;
+               b += 4;
+       }
+
+       /* flush the jtag queue */
+       if ((err = jtag_execute_queue()) != ERROR_OK)
+       {
+               return err;
+       }
+
+       /* walk over the buffer and fix target endianness */
+       b = buffer;
+
+       for (i = 0; i < x; i++)
+       {
+               data = buf_get_u32(b, 0, 32) & 0x00FFFFFF;
+//             LOG_DEBUG("R: %08X", *((uint32_t*)b));
+               target_buffer_set_u32(target, b, data);
+               b += 4;
+       }
 
        return ERROR_OK;
 }
 
-int dsp563xx_write_dr_u16(struct jtag_tap *tap, uint16_t * dr_in, uint16_t dr_out,
-                         int dr_len, int rti)
+static int dsp563xx_read_memory(struct target *target, int mem_type, uint32_t address, uint32_t size, uint32_t count, uint8_t * buffer)
 {
-       if (dr_len > 16)
+       int err;
+       uint32_t i,i1;
+       uint8_t *buffer_y,*buffer_x;
+
+       /* we only support 4 byte aligned data */
+       if ( (size != 4) || (!count) )
+       {
+               return ERROR_INVALID_ARGUMENTS;
+       }
+
+       if ( mem_type != MEM_L )
+       {
+               return dsp563xx_read_memory_core(target,mem_type,address,size,count,buffer);
+       }
+
+       if ( !(buffer_y = malloc(size*count)) )
+       {
+               return ERROR_INVALID_ARGUMENTS;
+       }
+
+       if ( !(buffer_x = malloc(size*count)) )
+       {
+               free(buffer_y);
+               return ERROR_INVALID_ARGUMENTS;
+       }
+
+       err = dsp563xx_read_memory_core(target,MEM_Y,address,size,count/2,buffer_y);
+
+       if ( err != ERROR_OK )
+       {
+               free(buffer_y);
+               free(buffer_x);
+               return err;
+       }
+
+       err = dsp563xx_read_memory_core(target,MEM_X,address,size,count/2,buffer_x);
+
+       if ( err != ERROR_OK )
+       {
+               free(buffer_y);
+               free(buffer_x);
+               return err;
+       }
+
+       for(i=0,i1=0;i<count;i+=2,i1++)
        {
-               LOG_ERROR("dr_len overflow, maxium is 16");
-               return ERROR_FAIL;
+               buf_set_u32(buffer + i*sizeof(uint32_t), 0, 32, buf_get_u32(buffer_y+i1*sizeof(uint32_t), 0, 32));
+               buf_set_u32(buffer + (i + 1) *sizeof(uint32_t), 0, 32, buf_get_u32(buffer_x+i1*sizeof(uint32_t), 0, 32));
        }
 
-       dsp563xx_write_dr(tap, (uint8_t *) dr_in, (uint8_t *) & dr_out, dr_len, rti);
+       free(buffer_y);
+       free(buffer_x);
 
        return ERROR_OK;
 }
 
-int dsp563xx_write_ir_u32(struct jtag_tap *tap, uint32_t * ir_in, uint32_t ir_out,
-                         int ir_len, int rti)
+static int dsp563xx_read_memory_default(struct target *target, uint32_t address, uint32_t size, uint32_t count, uint8_t * buffer)
+{
+
+       return dsp563xx_read_memory(target, dsp563xx_get_default_memory(), address, size, count, buffer);
+}
+
+static int dsp563xx_write_memory_core(struct target *target, int mem_type, uint32_t address, uint32_t size, uint32_t count, const uint8_t * buffer)
 {
-       if (ir_len > 32)
+       int err;
+       struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
+       uint32_t i, x;
+       uint32_t data, move_cmd = 0;
+       const uint8_t *b;
+
+       LOG_DEBUG("memtype: %d address: 0x%8.8" PRIx32 ", size: 0x%8.8" PRIx32 ", count: 0x%8.8" PRIx32 "", mem_type,address, size, count);
+
+       if (target->state != TARGET_HALTED)
        {
-               LOG_ERROR("ir_len overflow, maxium is 32");
-               return ERROR_FAIL;
+               LOG_WARNING("target not halted");
+               return ERROR_TARGET_NOT_HALTED;
        }
 
-       dsp563xx_write_ir(tap, (uint8_t *) ir_in, (uint8_t *) & ir_out, ir_len, rti);
+       switch (mem_type)
+       {
+               case MEM_X:
+                       /* invalidate affected x registers */
+                       dsp563xx_invalidate_x_context(target,address,address+count-1);
+                       move_cmd = 0x615800;
+                       break;
+               case MEM_Y:
+                       move_cmd = 0x695800;
+                       break;
+               case MEM_P:
+                       move_cmd = 0x075891;
+                       break;
+               default:
+                       return ERROR_INVALID_ARGUMENTS;
+       }
+
+       /* we use r0 to store temporary data */
+       if (!dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].valid)
+               dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_R0);
+       /* we use r1 to store temporary data */
+       if (!dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R1].valid)
+               dsp563xx->read_core_reg(target, DSP563XX_REG_IDX_R1);
+
+       /* r0 is no longer valid on target */
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R0].dirty = 1;
+       /* r1 is no longer valid on target */
+       dsp563xx->core_cache->reg_list[DSP563XX_REG_IDX_R1].dirty = 1;
+
+       x = count;
+       b = buffer;
+
+       if ((err = dsp563xx_once_execute_dw_ir(target->tap, 1, 0x60F400, address)) != ERROR_OK)
+               return err;
+
+       for (i = 0; i < x; i++)
+       {
+               data = target_buffer_get_u32(target, b);
+
+//             LOG_DEBUG("W: %08X", data);
+
+               data &= 0x00ffffff;
+
+               if ((err = dsp563xx_once_execute_dw_ir(target->tap, 0, 0x61F400, data)) != ERROR_OK)
+                       return err;
+               if ((err = dsp563xx_once_execute_sw_ir(target->tap, 0, move_cmd)) != ERROR_OK)
+                       return err;
+               b += 4;
+       }
+
+       /* flush the jtag queue */
+       if ((err = jtag_execute_queue()) != ERROR_OK)
+       {
+               return err;
+       }
 
        return ERROR_OK;
 }
 
-int dsp563xx_write_dr_u32(struct jtag_tap *tap, uint32_t * dr_in, uint32_t dr_out,
-                         int dr_len, int rti)
+static int dsp563xx_write_memory(struct target *target, int mem_type, uint32_t address, uint32_t size, uint32_t count, const uint8_t * buffer)
 {
-       if (dr_len > 32)
+       int err;
+       uint32_t i,i1;
+       uint8_t *buffer_y,*buffer_x;
+
+       /* we only support 4 byte aligned data */
+       if ( (size != 4) || (!count) )
        {
-               LOG_ERROR("dr_len overflow, maxium is 32");
-               return ERROR_FAIL;
+               return ERROR_INVALID_ARGUMENTS;
        }
 
-       dsp563xx_write_dr(tap, (uint8_t *) dr_in, (uint8_t *) & dr_out, dr_len, rti);
+       if ( mem_type != MEM_L )
+       {
+               return dsp563xx_write_memory_core(target,mem_type,address,size,count,buffer);
+       }
+
+       if ( !(buffer_y = malloc(size*count)) )
+       {
+               return ERROR_INVALID_ARGUMENTS;
+       }
+
+       if ( !(buffer_x = malloc(size*count)) )
+       {
+               free(buffer_y);
+               return ERROR_INVALID_ARGUMENTS;
+       }
+
+       for(i=0,i1=0;i<count;i+=2,i1++)
+       {
+               buf_set_u32(buffer_y + i1*sizeof(uint32_t), 0, 32, buf_get_u32(buffer+i*sizeof(uint32_t), 0, 32));
+               buf_set_u32(buffer_x + i1*sizeof(uint32_t), 0, 32, buf_get_u32(buffer+(i+1)*sizeof(uint32_t), 0, 32));
+       }
+
+       err = dsp563xx_write_memory_core(target,MEM_Y,address,size,count/2,buffer_y);
+
+       if ( err != ERROR_OK )
+       {
+               free(buffer_y);
+               free(buffer_x);
+               return err;
+       }
+
+       err = dsp563xx_write_memory_core(target,MEM_X,address,size,count/2,buffer_x);
+
+       if ( err != ERROR_OK )
+       {
+               free(buffer_y);
+               free(buffer_x);
+               return err;
+       }
+
+       free(buffer_y);
+       free(buffer_x);
 
        return ERROR_OK;
 }
 
-int dsp563xx_execute_queue(void)
+static int dsp563xx_write_memory_default(struct target *target, uint32_t address, uint32_t size, uint32_t count, const uint8_t * buffer)
 {
-       return jtag_execute_queue();
+       return dsp563xx_write_memory(target, dsp563xx_get_default_memory(), address, size, count, buffer);
 }
 
+static int dsp563xx_bulk_write_memory_default(struct target *target, uint32_t address, uint32_t count, const uint8_t *buffer)
+{
+       return dsp563xx_write_memory(target, dsp563xx_get_default_memory(), address, 4, count, buffer);
+}
+
+static int dsp563xx_add_breakpoint(struct target *target, struct breakpoint *breakpoint)
+{
+       return ERROR_OK;
+}
+
+static int dsp563xx_remove_breakpoint(struct target *target, struct breakpoint *breakpoint)
+{
+       return ERROR_OK;
+}
+
+static int dsp563xx_add_watchpoint(struct target *target, struct watchpoint *watchpoint)
+{
+       return ERROR_OK;
+}
+
+static int dsp563xx_remove_watchpoint(struct target *target, struct watchpoint *watchpoint)
+{
+       return ERROR_OK;
+}
+
+static void handle_md_output(struct command_context *cmd_ctx, struct target *target, uint32_t address, unsigned size, unsigned count, const uint8_t * buffer)
+{
+       const unsigned line_bytecnt = 32;
+       unsigned line_modulo = line_bytecnt / size;
+
+       char output[line_bytecnt * 4 + 1];
+       unsigned output_len = 0;
+
+       const char *value_fmt;
+       switch (size)
+       {
+               case 4:
+                       value_fmt = "%8.8x ";
+                       break;
+               case 2:
+                       value_fmt = "%4.4x ";
+                       break;
+               case 1:
+                       value_fmt = "%2.2x ";
+                       break;
+               default:
+                       /* "can't happen", caller checked */
+                       LOG_ERROR("invalid memory read size: %u", size);
+                       return;
+       }
+
+       for (unsigned i = 0; i < count; i++)
+       {
+               if (i % line_modulo == 0)
+               {
+                       output_len += snprintf(output + output_len, sizeof(output) - output_len, "0x%8.8x: ", (unsigned) (address + (i * size)));
+               }
+
+               uint32_t value = 0;
+               const uint8_t *value_ptr = buffer + i * size;
+               switch (size)
+               {
+                       case 4:
+                               value = target_buffer_get_u32(target, value_ptr);
+                               break;
+                       case 2:
+                               value = target_buffer_get_u16(target, value_ptr);
+                               break;
+                       case 1:
+                               value = *value_ptr;
+               }
+               output_len += snprintf(output + output_len, sizeof(output) - output_len, value_fmt, value);
+
+               if ((i % line_modulo == line_modulo - 1) || (i == count - 1))
+               {
+                       command_print(cmd_ctx, "%s", output);
+                       output_len = 0;
+               }
+       }
+}
+
+COMMAND_HANDLER(dsp563xx_mem_command)
+{
+       struct target *target = get_current_target(CMD_CTX);
+       int err = ERROR_OK;
+       int read_mem;
+       uint32_t address = 0;
+       uint32_t count = 1, i;
+       uint32_t pattern = 0;
+       uint32_t mem_type;
+       uint8_t *buffer, *b;
+
+       switch (CMD_NAME[1])
+       {
+               case 'w':
+                       read_mem = 0;
+                       break;
+               case 'd':
+                       read_mem = 1;
+                       break;
+               default:
+                       return ERROR_COMMAND_SYNTAX_ERROR;
+       }
+
+       switch (CMD_NAME[3])
+       {
+               case 'x':
+                       mem_type = MEM_X;
+                       break;
+               case 'y':
+                       mem_type = MEM_Y;
+                       break;
+               case 'p':
+                       mem_type = MEM_P;
+                       break;
+               default:
+                       return ERROR_COMMAND_SYNTAX_ERROR;
+       }
+
+       if (CMD_ARGC > 0)
+       {
+               COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
+       }
+
+       if (read_mem == 0)
+       {
+               if (CMD_ARGC < 2)
+               {
+                       return ERROR_COMMAND_SYNTAX_ERROR;
+               }
+               if (CMD_ARGC > 1)
+               {
+                       COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], pattern);
+               }
+               if (CMD_ARGC > 2)
+               {
+                       COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], count);
+               }
+       }
+
+       if (read_mem == 1)
+       {
+               if (CMD_ARGC < 1)
+               {
+                       return ERROR_COMMAND_SYNTAX_ERROR;
+               }
+               if (CMD_ARGC > 1)
+               {
+                       COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], count);
+               }
+       }
+
+       buffer = calloc(count, sizeof(uint32_t));
+
+       if (read_mem == 1)
+       {
+               if ((err = dsp563xx_read_memory(target, mem_type, address, sizeof(uint32_t), count, buffer)) == ERROR_OK)
+                       handle_md_output(CMD_CTX, target, address, sizeof(uint32_t), count, buffer);
+       }
+       else
+       {
+               b = buffer;
+
+               for (i = 0; i < count; i++)
+               {
+                       target_buffer_set_u32(target, b, pattern);
+                       b += 4;
+               }
+
+               err = dsp563xx_write_memory(target, mem_type, address, sizeof(uint32_t), count, buffer);
+       }
+
+       free(buffer);
+
+       return err;
+}
+
+static const struct command_registration dsp563xx_command_handlers[] = {
+       {
+        .name = "mwwx",
+        .handler = dsp563xx_mem_command,
+        .mode = COMMAND_EXEC,
+        .help = "write x memory words",
+        .usage = "mwwx address value [count]",
+        },
+       {
+        .name = "mwwy",
+        .handler = dsp563xx_mem_command,
+        .mode = COMMAND_EXEC,
+        .help = "write y memory words",
+        .usage = "mwwy address value [count]",
+        },
+       {
+        .name = "mwwp",
+        .handler = dsp563xx_mem_command,
+        .mode = COMMAND_EXEC,
+        .help = "write p memory words",
+        .usage = "mwwp address value [count]",
+        },
+       {
+        .name = "mdwx",
+        .handler = dsp563xx_mem_command,
+        .mode = COMMAND_EXEC,
+        .help = "display x memory words",
+        .usage = "mdwx address [count]",
+        },
+       {
+        .name = "mdwy",
+        .handler = dsp563xx_mem_command,
+        .mode = COMMAND_EXEC,
+        .help = "display y memory words",
+        .usage = "mdwy address [count]",
+        },
+       {
+        .name = "mdwp",
+        .handler = dsp563xx_mem_command,
+        .mode = COMMAND_EXEC,
+        .help = "display p memory words",
+        .usage = "mdwp address [count]",
+        },
+       COMMAND_REGISTRATION_DONE
+};
+
 /** Holds methods for DSP563XX targets. */
 struct target_type dsp563xx_target = {
        .name = "dsp563xx",
@@ -974,6 +1844,8 @@ struct target_type dsp563xx_target = {
 
        .target_request_data = NULL,
 
+       .get_gdb_reg_list = dsp563xx_get_gdb_reg_list,
+
        .halt = dsp563xx_halt,
        .resume = dsp563xx_resume,
        .step = dsp563xx_step,
@@ -982,9 +1854,17 @@ struct target_type dsp563xx_target = {
        .deassert_reset = dsp563xx_deassert_reset,
        .soft_reset_halt = dsp563xx_soft_reset_halt,
 
-       .read_memory = dsp563xx_read_memory_p,
-       .write_memory = dsp563xx_write_memory_p,
+       .read_memory = dsp563xx_read_memory_default,
+       .write_memory = dsp563xx_write_memory_default,
+       .bulk_write_memory = dsp563xx_bulk_write_memory_default,
+
+       .add_breakpoint = dsp563xx_add_breakpoint,
+       .remove_breakpoint = dsp563xx_remove_breakpoint,
+       .add_watchpoint = dsp563xx_add_watchpoint,
+       .remove_watchpoint = dsp563xx_remove_watchpoint,
 
+       .commands = dsp563xx_command_handlers,
        .target_create = dsp563xx_target_create,
        .init_target = dsp563xx_init_target,
+       .examine = dsp563xx_examine,
 };