Transform 'u32' to 'uint32_t' in src/target/arm*
[fw/openocd] / src / target / arm_disassembler.c
index 8a048cfccb2f1d159dc35be7a4291a54f4081739..e5ca32eb8f49a0a5e34783c8a9a85178c987a035 100644 (file)
 #endif
 
 #include "arm_disassembler.h"
-
 #include "log.h"
 
-#include <string.h>
 
 /* textual represenation of the condition field */
 /* ALways (default) is ommitted (empty string) */
@@ -35,12 +33,12 @@ char *arm_condition_strings[] =
 };
 
 /* make up for C's missing ROR */
-u32 ror(u32 value, int places) 
+uint32_t ror(uint32_t value, int places) 
 { 
        return (value >> places) | (value << (32 - places)); 
 }
 
-int evaluate_pld(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_pld(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        /* PLD */
        if ((opcode & 0x0d70f0000) == 0x0550f000)
@@ -57,11 +55,11 @@ int evaluate_pld(u32 opcode, u32 address, arm_instruction_t *instruction)
                return ERROR_OK;
        }
        
-       ERROR("should never reach this point");
+       LOG_ERROR("should never reach this point");
        return -1;
 }
 
-int evaluate_swi(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_swi(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        instruction->type = ARM_SWI;
        
@@ -70,11 +68,11 @@ int evaluate_swi(u32 opcode, u32 address, arm_instruction_t *instruction)
        return ERROR_OK;
 }
 
-int evaluate_blx_imm(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_blx_imm(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        int offset;
-       u32 immediate;
-       u32 target_address;
+       uint32_t immediate;
+       uint32_t target_address;
        
        instruction->type = ARM_BLX;
        immediate = opcode & 0x00ffffff;
@@ -102,12 +100,12 @@ int evaluate_blx_imm(u32 opcode, u32 address, arm_instruction_t *instruction)
        return ERROR_OK;
 }
 
-int evaluate_b_bl(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_b_bl(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
-       u8 L;
-       u32 immediate;
+       uint8_t L;
+       uint32_t immediate;
        int offset;
-       u32 target_address;
+       uint32_t target_address;
        
        immediate = opcode & 0x00ffffff;
        L = (opcode & 0x01000000) >> 24;
@@ -139,14 +137,14 @@ int evaluate_b_bl(u32 opcode, u32 address, arm_instruction_t *instruction)
 
 /* Coprocessor load/store and double register transfers */
 /* both normal and extended instruction space (condition field b1111) */
-int evaluate_ldc_stc_mcrr_mrrc(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_ldc_stc_mcrr_mrrc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
-       u8 cp_num = (opcode & 0xf00) >> 8;
+       uint8_t cp_num = (opcode & 0xf00) >> 8;
        
        /* MCRR or MRRC */
        if (((opcode & 0x0ff00000) == 0x0c400000) || ((opcode & 0x0ff00000) == 0x0c400000))
        {
-               u8 cp_opcode, Rd, Rn, CRm;
+               uint8_t cp_opcode, Rd, Rn, CRm;
                char *mnemonic;
                
                cp_opcode = (opcode & 0xf0) >> 4;
@@ -173,8 +171,8 @@ int evaluate_ldc_stc_mcrr_mrrc(u32 opcode, u32 address, arm_instruction_t *instr
        }
        else /* LDC or STC */
        {
-               u8 CRd, Rn, offset;
-               u8 U, N;
+               uint8_t CRd, Rn, offset;
+               uint8_t U, N;
                char *mnemonic;
                char addressing_mode[32];
                
@@ -219,11 +217,11 @@ int evaluate_ldc_stc_mcrr_mrrc(u32 opcode, u32 address, arm_instruction_t *instr
 /* Coprocessor data processing instructions */
 /* Coprocessor register transfer instructions */
 /* both normal and extended instruction space (condition field b1111) */
-int evaluate_cdp_mcr_mrc(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_cdp_mcr_mrc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        char* cond;
        char* mnemonic;
-       u8 cp_num, opcode_1, CRd_Rd, CRn, CRm, opcode_2;
+       uint8_t cp_num, opcode_1, CRd_Rd, CRn, CRm, opcode_2;
        
        cond = ((opcode & 0xf0000000) == 0xf0000000) ? "2" : COND(opcode);
        cp_num = (opcode & 0xf00) >> 8;
@@ -268,10 +266,10 @@ int evaluate_cdp_mcr_mrc(u32 opcode, u32 address, arm_instruction_t *instruction
 }
 
 /* Load/store instructions */
-int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_load_store(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
-       u8 I, P, U, B, W, L;
-       u8 Rn, Rd;
+       uint8_t I, P, U, B, W, L;
+       uint8_t Rn, Rd;
        char *operation; /* "LDR" or "STR" */
        char *suffix; /* "", "B", "T", "BT" */
        char offset[32];
@@ -342,16 +340,19 @@ int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
        
        if (!I) /* #+-<offset_12> */
        {
-               u32 offset_12 = (opcode & 0xfff);
-               snprintf(offset, 32, "#%s0x%x", (U) ? "" : "-", offset_12);
+               uint32_t offset_12 = (opcode & 0xfff);
+               if (offset_12)
+                       snprintf(offset, 32, ", #%s0x%x", (U) ? "" : "-", offset_12);
+               else
+                       snprintf(offset, 32, "%s", "");
                
                instruction->info.load_store.offset_mode = 0;
                instruction->info.load_store.offset.offset = offset_12;
        }
        else /* either +-<Rm> or +-<Rm>, <shift>, #<shift_imm> */
        {
-               u8 shift_imm, shift;
-               u8 Rm;
+               uint8_t shift_imm, shift;
+               uint8_t Rm;
                
                shift_imm = (opcode & 0xf80) >> 7;
                shift = (opcode & 0x60) >> 5;
@@ -376,26 +377,26 @@ int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
 
                if ((shift_imm == 0x0) && (shift == 0x0)) /* +-<Rm> */
                {
-                       snprintf(offset, 32, "%sr%i", (U) ? "" : "-", Rm);
+                       snprintf(offset, 32, "%sr%i", (U) ? "" : "-", Rm);
                }
                else /* +-<Rm>, <Shift>, #<shift_imm> */
                {
                        switch (shift)
                        {
                                case 0x0: /* LSL */
-                                       snprintf(offset, 32, "%sr%i, LSL #0x%x", (U) ? "" : "-", Rm, shift_imm);
+                                       snprintf(offset, 32, "%sr%i, LSL #0x%x", (U) ? "" : "-", Rm, shift_imm);
                                        break;
                                case 0x1: /* LSR */
-                                       snprintf(offset, 32, "%sr%i, LSR #0x%x", (U) ? "" : "-", Rm, shift_imm);
+                                       snprintf(offset, 32, "%sr%i, LSR #0x%x", (U) ? "" : "-", Rm, shift_imm);
                                        break;
                                case 0x2: /* ASR */
-                                       snprintf(offset, 32, "%sr%i, ASR #0x%x", (U) ? "" : "-", Rm, shift_imm);
+                                       snprintf(offset, 32, "%sr%i, ASR #0x%x", (U) ? "" : "-", Rm, shift_imm);
                                        break;
                                case 0x3: /* ROR */
-                                       snprintf(offset, 32, "%sr%i, ROR #0x%x", (U) ? "" : "-", Rm, shift_imm);
+                                       snprintf(offset, 32, "%sr%i, ROR #0x%x", (U) ? "" : "-", Rm, shift_imm);
                                        break;
                                case 0x4: /* RRX */
-                                       snprintf(offset, 32, "%sr%i, RRX", (U) ? "" : "-", Rm);
+                                       snprintf(offset, 32, "%sr%i, RRX", (U) ? "" : "-", Rm);
                                        break;
                        }
                }
@@ -405,7 +406,7 @@ int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
        {
                if (W == 0) /* offset */
                {
-                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, [r%i%s]",
+                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, [r%i%s]",
                                         address, opcode, operation, COND(opcode), suffix,
                                         Rd, Rn, offset);
                        
@@ -413,7 +414,7 @@ int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
                }
                else /* pre-indexed */
                {
-                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, [r%i%s]!",
+                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, [r%i%s]!",
                                         address, opcode, operation, COND(opcode), suffix,
                                         Rd, Rn, offset);
                        
@@ -422,7 +423,7 @@ int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
        }
        else /* post-indexed */
        {
-               snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, [r%i]%s",
+               snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, [r%i]%s",
                                 address, opcode, operation, COND(opcode), suffix,
                                 Rd, Rn, offset);
                
@@ -433,10 +434,10 @@ int evaluate_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
 }
 
 /* Miscellaneous load/store instructions */
-int evaluate_misc_load_store(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_misc_load_store(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
-       u8 P, U, I, W, L, S, H;
-       u8 Rn, Rd;
+       uint8_t P, U, I, W, L, S, H;
+       uint8_t Rn, Rd;
        char *operation; /* "LDR" or "STR" */
        char *suffix; /* "H", "SB", "SH", "D" */
        char offset[32];
@@ -510,7 +511,7 @@ int evaluate_misc_load_store(u32 opcode, u32 address, arm_instruction_t *instruc
        
        if (I) /* Immediate offset/index (#+-<offset_8>)*/
        {
-               u32 offset_8 = ((opcode & 0xf00) >> 4) | (opcode & 0xf);
+               uint32_t offset_8 = ((opcode & 0xf00) >> 4) | (opcode & 0xf);
                snprintf(offset, 32, "#%s0x%x", (U) ? "" : "-", offset_8);
                
                instruction->info.load_store.offset_mode = 0;
@@ -518,7 +519,7 @@ int evaluate_misc_load_store(u32 opcode, u32 address, arm_instruction_t *instruc
        }
        else /* Register offset/index (+-<Rm>) */
        {
-               u8 Rm;
+               uint8_t Rm;
                Rm = (opcode & 0xf);
                snprintf(offset, 32, "%sr%i", (U) ? "" : "-", Rm);
                
@@ -560,10 +561,10 @@ int evaluate_misc_load_store(u32 opcode, u32 address, arm_instruction_t *instruc
 }
 
 /* Load/store multiples instructions */
-int evaluate_ldm_stm(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_ldm_stm(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
-       u8 P, U, S, W, L, Rn;
-       u32 register_list;
+       uint8_t P, U, S, W, L, Rn;
+       uint32_t register_list;
        char *addressing_mode;
        char *mnemonic;
        char reg_list[69];
@@ -647,7 +648,7 @@ int evaluate_ldm_stm(u32 opcode, u32 address, arm_instruction_t *instruction)
 }
 
 /* Multiplies, extra load/stores */
-int evaluate_mul_and_extra_ld_st(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_mul_and_extra_ld_st(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        /* Multiply (accumulate) (long) and Swap/swap byte */
        if ((opcode & 0x000000f0) == 0x00000090)
@@ -655,7 +656,7 @@ int evaluate_mul_and_extra_ld_st(u32 opcode, u32 address, arm_instruction_t *ins
                /* Multiply (accumulate) */
                if ((opcode & 0x0f800000) == 0x00000000)
                {
-                       u8 Rm, Rs, Rn, Rd, S;
+                       uint8_t Rm, Rs, Rn, Rd, S;
                        Rm = opcode & 0xf;
                        Rs = (opcode & 0xf00) >> 8;
                        Rn = (opcode & 0xf000) >> 12;
@@ -682,8 +683,8 @@ int evaluate_mul_and_extra_ld_st(u32 opcode, u32 address, arm_instruction_t *ins
                /* Multiply (accumulate) long */
                if ((opcode & 0x0f800000) == 0x00800000)
                {
-                       char* mnemonic;
-                       u8 Rm, Rs, RdHi, RdLow, S;
+                       char* mnemonic = NULL;
+                       uint8_t Rm, Rs, RdHi, RdLow, S;
                        Rm = opcode & 0xf;
                        Rs = (opcode & 0xf00) >> 8;
                        RdHi = (opcode & 0xf000) >> 12;
@@ -720,7 +721,7 @@ int evaluate_mul_and_extra_ld_st(u32 opcode, u32 address, arm_instruction_t *ins
                /* Swap/swap byte */
                if ((opcode & 0x0f800000) == 0x01000000)
                {
-                       u8 Rm, Rd, Rn;
+                       uint8_t Rm, Rd, Rn;
                        Rm = opcode & 0xf;
                        Rd = (opcode & 0xf000) >> 12;
                        Rn = (opcode & 0xf0000) >> 16;
@@ -738,7 +739,7 @@ int evaluate_mul_and_extra_ld_st(u32 opcode, u32 address, arm_instruction_t *ins
        return evaluate_misc_load_store(opcode, address, instruction);
 }
 
-int evaluate_mrs_msr(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_mrs_msr(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        int R = (opcode & 0x00400000) >> 22;
        char *PSR = (R) ? "SPSR" : "CPSR";
@@ -751,8 +752,8 @@ int evaluate_mrs_msr(u32 opcode, u32 address, arm_instruction_t *instruction)
                /* immediate variant */
                if (opcode & 0x02000000)
                {
-                       u8 immediate = (opcode & 0xff);
-                       u8 rotate = (opcode & 0xf00);
+                       uint8_t immediate = (opcode & 0xff);
+                       uint8_t rotate = (opcode & 0xf00);
                        
                        snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\tMSR%s %s_%s%s%s%s, 0x%8.8x",
                                         address, opcode, COND(opcode), PSR,
@@ -765,7 +766,7 @@ int evaluate_mrs_msr(u32 opcode, u32 address, arm_instruction_t *instruction)
                }
                else /* register variant */
                {
-                       u8 Rm = opcode & 0xf;
+                       uint8_t Rm = opcode & 0xf;
                        snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\tMSR%s %s_%s%s%s%s, r%i",
                                         address, opcode, COND(opcode), PSR,
                                         (opcode & 0x10000) ? "c" : "",
@@ -779,7 +780,7 @@ int evaluate_mrs_msr(u32 opcode, u32 address, arm_instruction_t *instruction)
        }
        else /* Move status register to register (MRS) */
        {
-               u8 Rd;
+               uint8_t Rd;
                
                instruction->type = ARM_MRS;
                Rd = (opcode & 0x0000f000) >> 12;
@@ -792,7 +793,7 @@ int evaluate_mrs_msr(u32 opcode, u32 address, arm_instruction_t *instruction)
 }
 
 /* Miscellaneous instructions */
-int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_misc_instr(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        /* MRS/MSR */
        if ((opcode & 0x000000f0) == 0x00000000)
@@ -803,7 +804,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
        /* BX */
        if ((opcode & 0x006000f0) == 0x00200010)
        {
-               u8 Rm;
+               uint8_t Rm;
                instruction->type = ARM_BX;
                Rm = opcode & 0xf;
                
@@ -815,9 +816,9 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
        }
        
        /* CLZ */
-       if ((opcode & 0x0060000f0) == 0x00300010)
+       if ((opcode & 0x006000f0) == 0x00600010)
        {
-               u8 Rm, Rd;
+               uint8_t Rm, Rd;
                instruction->type = ARM_CLZ;
                Rm = opcode & 0xf;
                Rd = (opcode & 0xf000) >> 12;
@@ -826,22 +827,25 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
                                 address, opcode, COND(opcode), Rd, Rm);
        }
        
-       /* BLX */
-       if ((opcode & 0x0060000f0) == 0x00200030)
+       /* BLX(2) */
+       if ((opcode & 0x006000f0) == 0x00200030)
        {
-               u8 Rm;
+               uint8_t Rm;
                instruction->type = ARM_BLX;
                Rm = opcode & 0xf;
                
                snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\tBLX%s r%i",
                                 address, opcode, COND(opcode), Rm);
+                                
+               instruction->info.b_bl_bx_blx.reg_operand = Rm;
+               instruction->info.b_bl_bx_blx.target_address = -1;
        }
        
        /* Enhanced DSP add/subtracts */
        if ((opcode & 0x0000000f0) == 0x00000050)
        {
-               u8 Rm, Rd, Rn;
-               char *mnemonic;
+               uint8_t Rm, Rd, Rn;
+               char *mnemonic = NULL;
                Rm = opcode & 0xf;
                Rd = (opcode & 0xf000) >> 12;
                Rn = (opcode & 0xf0000) >> 16;
@@ -873,7 +877,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
        /* Software breakpoints */
        if ((opcode & 0x0000000f0) == 0x00000070)
        {
-               u32 immediate;
+               uint32_t immediate;
                instruction->type = ARM_BKPT;
                immediate = ((opcode & 0x000fff00) >> 4) | (opcode & 0xf);
                
@@ -890,7 +894,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
                /* SMLA<x><y> */
                if ((opcode & 0x00600000) == 0x00000000)
                {
-                       u8 Rd, Rm, Rs, Rn;
+                       uint8_t Rd, Rm, Rs, Rn;
                        instruction->type = ARM_SMLAxy;
                        Rd = (opcode & 0xf0000) >> 16;
                        Rm = (opcode & 0xf);
@@ -905,7 +909,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
                /* SMLAL<x><y> */
                if ((opcode & 0x00600000) == 0x00400000)
                {
-                       u8 RdLow, RdHi, Rm, Rs;
+                       uint8_t RdLow, RdHi, Rm, Rs;
                        instruction->type = ARM_SMLAxy;
                        RdHi = (opcode & 0xf0000) >> 16;
                        RdLow = (opcode & 0xf000) >> 12;
@@ -920,7 +924,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
                /* SMLAW<y> */
                if (((opcode & 0x00600000) == 0x00100000) && (x == 0))
                {
-                       u8 Rd, Rm, Rs, Rn;
+                       uint8_t Rd, Rm, Rs, Rn;
                        instruction->type = ARM_SMLAWy;
                        Rd = (opcode & 0xf0000) >> 16;
                        Rm = (opcode & 0xf);
@@ -935,7 +939,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
                /* SMUL<x><y> */
                if ((opcode & 0x00600000) == 0x00300000)
                {
-                       u8 Rd, Rm, Rs;
+                       uint8_t Rd, Rm, Rs;
                        instruction->type = ARM_SMULxy;
                        Rd = (opcode & 0xf0000) >> 16;
                        Rm = (opcode & 0xf);
@@ -949,7 +953,7 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
                /* SMULW<y> */
                if (((opcode & 0x00600000) == 0x00100000) && (x == 1))
                {
-                       u8 Rd, Rm, Rs;
+                       uint8_t Rd, Rm, Rs;
                        instruction->type = ARM_SMULWy;
                        Rd = (opcode & 0xf0000) >> 16;
                        Rm = (opcode & 0xf);
@@ -964,10 +968,10 @@ int evaluate_misc_instr(u32 opcode, u32 address, arm_instruction_t *instruction)
        return ERROR_OK;
 }
 
-int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
+int evaluate_data_proc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
-       u8 I, op, S, Rn, Rd;
-       char *mnemonic;
+       uint8_t I, op, S, Rn, Rd;
+       char *mnemonic = NULL;
        char shifter_operand[32];
        
        I = (opcode & 0x02000000) >> 25;
@@ -1051,9 +1055,9 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
        
        if (I) /* immediate shifter operand (#<immediate>)*/
        {
-               u8 immed_8 = opcode & 0xff;
-               u8 rotate_imm = (opcode & 0xf00) >> 8;
-               u32 immediate;
+               uint8_t immed_8 = opcode & 0xff;
+               uint8_t rotate_imm = (opcode & 0xf00) >> 8;
+               uint32_t immediate;
                
                immediate = ror(immed_8, rotate_imm * 2);
                
@@ -1064,13 +1068,13 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
        }
        else /* register-based shifter operand */
        {
-               u8 shift, Rm;
+               uint8_t shift, Rm;
                shift = (opcode & 0x60) >> 5;
                Rm = (opcode & 0xf);
                
                if ((opcode & 0x10) != 0x10) /* Immediate shifts ("<Rm>" or "<Rm>, <shift> #<shift_immediate>") */
                {
-                       u8 shift_imm;
+                       uint8_t shift_imm;
                        shift_imm = (opcode & 0xf80) >> 7;
 
                        instruction->info.data_proc.variant = 1;
@@ -1078,6 +1082,18 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
                        instruction->info.data_proc.shifter_operand.immediate_shift.shift_imm = shift_imm;
                        instruction->info.data_proc.shifter_operand.immediate_shift.shift = shift;
                
+                       /* LSR encodes a shift by 32 bit as 0x0 */
+                       if ((shift == 0x1) && (shift_imm == 0x0))
+                               shift_imm = 0x20;
+               
+                       /* ASR encodes a shift by 32 bit as 0x0 */
+                       if ((shift == 0x2) && (shift_imm == 0x0))
+                               shift_imm = 0x20;
+
+                       /* ROR by 32 bit is actually a RRX */
+                       if ((shift == 0x3) && (shift_imm == 0x0))
+                               shift = 0x4;
+                       
                        if ((shift_imm == 0x0) && (shift == 0x0))
                        {
                                snprintf(shifter_operand, 32, "r%i", Rm);
@@ -1090,28 +1106,25 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
                                }
                                else if (shift == 0x1) /* LSR */
                                {
-                                       if (shift_imm == 0x0)
-                                               shift_imm = 0x32;
                                        snprintf(shifter_operand, 32, "r%i, LSR #0x%x", Rm, shift_imm);
                                }
                                else if (shift == 0x2) /* ASR */
                                {
-                                       if (shift_imm == 0x0)
-                                               shift_imm = 0x32;
                                        snprintf(shifter_operand, 32, "r%i, ASR #0x%x", Rm, shift_imm);
                                }
-                               else if (shift == 0x3) /* ROR or RRX */
+                               else if (shift == 0x3) /* ROR */
                                {
-                                       if (shift_imm == 0x0) /* RRX */
-                                               snprintf(shifter_operand, 32, "r%i, RRX", Rm);
-                                       else
-                                               snprintf(shifter_operand, 32, "r%i, ROR #0x%x", Rm, shift_imm);
+                                       snprintf(shifter_operand, 32, "r%i, ROR #0x%x", Rm, shift_imm);
+                               }
+                               else if (shift == 0x4) /* RRX */
+                               {
+                                       snprintf(shifter_operand, 32, "r%i, RRX", Rm);
                                }
                        }
                }
                else /* Register shifts ("<Rm>, <shift> <Rs>") */
                {
-                       u8 Rs = (opcode & 0xf00) >> 8;
+                       uint8_t Rs = (opcode & 0xf00) >> 8;
                        
                        instruction->info.data_proc.variant = 2;
                        instruction->info.data_proc.shifter_operand.register_shift.Rm = Rm;
@@ -1130,7 +1143,7 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
                        {
                                snprintf(shifter_operand, 32, "r%i, ASR r%i", Rm, Rs);
                        }
-                       else if (shift == 0x3) /* ROR or RRX */
+                       else if (shift == 0x3) /* ROR */
                        {
                                snprintf(shifter_operand, 32, "r%i, ROR r%i", Rm, Rs);
                        }
@@ -1145,7 +1158,10 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
        }
        else if ((op == 0xd) || (op == 0xf)) /* <opcode1>{<cond>}{S} <Rd>, <shifter_operand> */
        {
-               snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, %s",
+               if (opcode==0xe1a00000) /* print MOV r0,r0 as NOP */
+                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\tNOP",address, opcode);
+               else
+                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\t%s%s%s r%i, %s",
                                 address, opcode, mnemonic, COND(opcode),
                                 (S) ? "S" : "", Rd, shifter_operand);
        }
@@ -1159,7 +1175,7 @@ int evaluate_data_proc(u32 opcode, u32 address, arm_instruction_t *instruction)
        return ERROR_OK;
 }
                
-int evaluate_opcode(u32 opcode, u32 address, arm_instruction_t *instruction)
+int arm_evaluate_opcode(uint32_t opcode, uint32_t address, arm_instruction_t *instruction)
 {
        /* clear fields, to avoid confusion */
        memset(instruction, 0, sizeof(arm_instruction_t));
@@ -1299,6 +1315,800 @@ int evaluate_opcode(u32 opcode, u32 address, arm_instruction_t *instruction)
                        return evaluate_cdp_mcr_mrc(opcode, address, instruction);
        }
        
-       ERROR("should never reach this point");
+       LOG_ERROR("should never reach this point");
        return -1;
 }
+
+int evaluate_b_bl_blx_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t offset = opcode & 0x7ff;
+       uint32_t opc = (opcode >> 11) & 0x3;
+       uint32_t target_address;
+       char *mnemonic = NULL;
+       
+       /* sign extend 11-bit offset */
+       if (((opc==0) || (opc==2)) && (offset & 0x00000400))
+               offset = 0xfffff800 | offset;
+       
+       target_address = address + 4 + (offset<<1);
+
+       switch(opc)
+       {
+               /* unconditional branch */
+               case 0:
+                       instruction->type = ARM_B;
+                       mnemonic = "B";
+                       break;
+               /* BLX suffix */
+               case 1:
+                       instruction->type = ARM_BLX;
+                       mnemonic = "BLX";
+                       break;
+               /* BL/BLX prefix */
+               case 2:
+                       instruction->type = ARM_UNKNOWN_INSTUCTION;
+                       mnemonic = "prefix";
+                       target_address = offset<<12;
+                       break;
+               /* BL suffix */
+               case 3:
+                       instruction->type = ARM_BL;
+                       mnemonic = "BL";
+                       break;
+       }
+       /* TODO: deals correctly with dual opcodes BL/BLX ... */
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s 0x%8.8x", address, opcode,mnemonic, target_address);
+       
+       instruction->info.b_bl_bx_blx.reg_operand = -1;
+       instruction->info.b_bl_bx_blx.target_address = target_address;
+
+       return ERROR_OK;
+}
+
+int evaluate_add_sub_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint8_t Rd = (opcode >> 0) & 0x7;
+       uint8_t Rn = (opcode >> 3) & 0x7;
+       uint8_t Rm_imm = (opcode >> 6) & 0x7;
+       uint32_t opc = opcode & (1<<9);
+       uint32_t reg_imm  = opcode & (1<<10);
+       char *mnemonic;
+       
+       if (opc)
+       {
+               instruction->type = ARM_SUB;
+               mnemonic = "SUBS";
+       }
+       else
+       {
+               instruction->type = ARM_ADD;
+               mnemonic = "ADDS";
+       }
+       
+       instruction->info.data_proc.Rd = Rd;
+       instruction->info.data_proc.Rn = Rn;
+       instruction->info.data_proc.S = 1;
+
+       if (reg_imm)
+       {
+               instruction->info.data_proc.variant = 0; /*immediate*/
+               instruction->info.data_proc.shifter_operand.immediate.immediate = Rm_imm;
+               snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, r%i, #%d",
+                                address, opcode, mnemonic, Rd, Rn, Rm_imm);
+       }
+       else
+       {
+               instruction->info.data_proc.variant = 1; /*immediate shift*/
+               instruction->info.data_proc.shifter_operand.immediate_shift.Rm = Rm_imm;
+               snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, r%i, r%i",
+                                address, opcode, mnemonic, Rd, Rn, Rm_imm);
+       }
+
+       return ERROR_OK;
+}
+
+int evaluate_shift_imm_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint8_t Rd = (opcode >> 0) & 0x7;
+       uint8_t Rm = (opcode >> 3) & 0x7;
+       uint8_t imm = (opcode >> 6) & 0x1f;
+       uint8_t opc = (opcode >> 11) & 0x3;
+       char *mnemonic = NULL;
+       
+       switch(opc)
+       {
+               case 0:
+                       instruction->type = ARM_MOV;
+                       mnemonic = "LSLS";
+                       instruction->info.data_proc.shifter_operand.immediate_shift.shift = 0;
+                       break;
+               case 1:
+                       instruction->type = ARM_MOV;
+                       mnemonic = "LSRS";
+                       instruction->info.data_proc.shifter_operand.immediate_shift.shift = 1;
+                       break;
+               case 2:
+                       instruction->type = ARM_MOV;
+                       mnemonic = "ASRS";
+                       instruction->info.data_proc.shifter_operand.immediate_shift.shift = 2;
+                       break;
+       }
+
+       if ((imm==0) && (opc!=0))
+               imm = 32;
+
+       instruction->info.data_proc.Rd = Rd;
+       instruction->info.data_proc.Rn = -1;
+       instruction->info.data_proc.S = 1;
+
+       instruction->info.data_proc.variant = 1; /*immediate_shift*/
+       instruction->info.data_proc.shifter_operand.immediate_shift.Rm = Rm;
+       instruction->info.data_proc.shifter_operand.immediate_shift.shift_imm = imm;
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, r%i, #0x%02x",
+                                address, opcode, mnemonic, Rd, Rm, imm);
+
+       return ERROR_OK;
+}
+
+int evaluate_data_proc_imm_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint8_t imm = opcode & 0xff;
+       uint8_t Rd = (opcode >> 8) & 0x7;
+       uint32_t opc = (opcode >> 11) & 0x3;
+       char *mnemonic = NULL;
+       
+       instruction->info.data_proc.Rd = Rd;
+       instruction->info.data_proc.Rn = Rd;
+       instruction->info.data_proc.S = 1;
+       instruction->info.data_proc.variant = 0; /*immediate*/
+       instruction->info.data_proc.shifter_operand.immediate.immediate = imm;
+       
+       switch(opc)
+       {
+               case 0:
+                       instruction->type = ARM_MOV;
+                       mnemonic = "MOVS";
+                       instruction->info.data_proc.Rn = -1;
+                       break;
+               case 1:
+                       instruction->type = ARM_CMP;
+                       mnemonic = "CMP";
+                       instruction->info.data_proc.Rd = -1;
+                       break;
+               case 2:
+                       instruction->type = ARM_ADD;
+                       mnemonic = "ADDS";
+                       break;
+               case 3:
+                       instruction->type = ARM_SUB;
+                       mnemonic = "SUBS";
+                       break;
+       }
+       
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, #0x%02x",
+                                address, opcode, mnemonic, Rd, imm);
+
+       return ERROR_OK;
+}
+
+int evaluate_data_proc_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint8_t high_reg, op, Rm, Rd,H1,H2;
+       char *mnemonic = NULL;
+       
+       high_reg = (opcode & 0x0400) >> 10;
+       op = (opcode & 0x03C0) >> 6;
+       
+       Rd = (opcode & 0x0007);
+       Rm = (opcode & 0x0038) >> 3;
+       H1 = (opcode & 0x0080) >> 7;
+       H2 = (opcode & 0x0040) >> 6;
+       
+       instruction->info.data_proc.Rd = Rd;
+       instruction->info.data_proc.Rn = Rd;
+       instruction->info.data_proc.S = (!high_reg || (instruction->type == ARM_CMP));
+       instruction->info.data_proc.variant = 1 /*immediate shift*/;
+       instruction->info.data_proc.shifter_operand.immediate_shift.Rm = Rm;
+
+       if (high_reg)
+       {
+               Rd |= H1 << 3;
+               Rm |= H2 << 3;
+               op >>= 2;
+       
+               switch (op)
+               {
+                       case 0x0:
+                               instruction->type = ARM_ADD;
+                               mnemonic = "ADD";
+                               break;
+                       case 0x1:
+                               instruction->type = ARM_CMP;
+                               mnemonic = "CMP";
+                               break;
+                       case 0x2:
+                               instruction->type = ARM_MOV;
+                               mnemonic = "MOV";
+                               break;
+                       case 0x3:
+                               if ((opcode & 0x7) == 0x0)
+                               {
+                                       instruction->info.b_bl_bx_blx.reg_operand = Rm;
+                                       if (H1)
+                                       {
+                                               instruction->type = ARM_BLX;
+                                               snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tBLX r%i", address, opcode, Rm);
+                                       }
+                                       else
+                                       {
+                                               instruction->type = ARM_BX;
+                                               snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tBX r%i", address, opcode, Rm);
+                                       }
+                               }
+                               else
+                               {
+                                       instruction->type = ARM_UNDEFINED_INSTRUCTION;
+                                       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tUNDEFINED INSTRUCTION", address, opcode);
+                               }
+                               return ERROR_OK;        
+                               break;
+               }
+       }
+       else
+       {
+               switch (op)
+               {
+                       case 0x0:
+                               instruction->type = ARM_AND;
+                               mnemonic = "ANDS";
+                               break;
+                       case 0x1:
+                               instruction->type = ARM_EOR;
+                               mnemonic = "EORS";
+                               break;
+                       case 0x2:
+                               instruction->type = ARM_MOV;
+                               mnemonic = "LSLS";
+                               instruction->info.data_proc.variant = 2 /*register shift*/;
+                               instruction->info.data_proc.shifter_operand.register_shift.shift = 0;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rm = Rd;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rs = Rm;
+                               break;
+                       case 0x3:
+                               instruction->type = ARM_MOV;
+                               mnemonic = "LSRS";
+                               instruction->info.data_proc.variant = 2 /*register shift*/;
+                               instruction->info.data_proc.shifter_operand.register_shift.shift = 1;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rm = Rd;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rs = Rm;
+                               break;
+                       case 0x4:
+                               instruction->type = ARM_MOV;
+                               mnemonic = "ASRS";
+                               instruction->info.data_proc.variant = 2 /*register shift*/;
+                               instruction->info.data_proc.shifter_operand.register_shift.shift = 2;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rm = Rd;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rs = Rm;
+                               break;
+                       case 0x5:
+                               instruction->type = ARM_ADC;
+                               mnemonic = "ADCS";
+                               break;
+                       case 0x6:
+                               instruction->type = ARM_SBC;
+                               mnemonic = "SBCS";
+                               break;
+                       case 0x7:
+                               instruction->type = ARM_MOV;
+                               mnemonic = "RORS";
+                               instruction->info.data_proc.variant = 2 /*register shift*/;
+                               instruction->info.data_proc.shifter_operand.register_shift.shift = 3;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rm = Rd;
+                               instruction->info.data_proc.shifter_operand.register_shift.Rs = Rm;
+                               break;
+                       case 0x8:
+                               instruction->type = ARM_TST;
+                               mnemonic = "TST";
+                               break;
+                       case 0x9:
+                               instruction->type = ARM_RSB;
+                               mnemonic = "NEGS";
+                               instruction->info.data_proc.variant = 0 /*immediate*/;
+                               instruction->info.data_proc.shifter_operand.immediate.immediate = 0;
+                               instruction->info.data_proc.Rn = Rm;
+                               break;
+                       case 0xA:
+                               instruction->type = ARM_CMP;
+                               mnemonic = "CMP";
+                               break;
+                       case 0xB:
+                               instruction->type = ARM_CMN;
+                               mnemonic = "CMN";
+                               break;
+                       case 0xC:
+                               instruction->type = ARM_ORR;
+                               mnemonic = "ORRS";
+                               break;
+                       case 0xD:
+                               instruction->type = ARM_MUL;
+                               mnemonic = "MULS";
+                               break;
+                       case 0xE:
+                               instruction->type = ARM_BIC;
+                               mnemonic = "BICS";
+                               break;
+                       case 0xF:
+                               instruction->type = ARM_MVN;
+                               mnemonic = "MVNS";
+                               break;
+               }
+       }
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, r%i",
+                                address, opcode, mnemonic, Rd, Rm);
+
+       return ERROR_OK;
+}
+
+int evaluate_load_literal_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t immediate;
+       uint8_t Rd = (opcode >> 8) & 0x7; 
+
+       instruction->type = ARM_LDR;
+       immediate = opcode & 0x000000ff;
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tLDR r%i, [PC, #0x%x]", address, opcode, Rd, immediate*4);
+
+       instruction->info.load_store.Rd = Rd;
+       instruction->info.load_store.Rn = 15 /*PC*/;
+       instruction->info.load_store.index_mode = 0; /*offset*/
+       instruction->info.load_store.offset_mode = 0; /*immediate*/
+       instruction->info.load_store.offset.offset = immediate*4;
+
+       return ERROR_OK;
+}
+
+int evaluate_load_store_reg_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint8_t Rd = (opcode >> 0) & 0x7; 
+       uint8_t Rn = (opcode >> 3) & 0x7; 
+       uint8_t Rm = (opcode >> 6) & 0x7; 
+       uint8_t opc = (opcode >> 9) & 0x7; 
+       char *mnemonic = NULL;
+
+       switch(opc)
+       {
+               case 0:
+                       instruction->type = ARM_STR;
+                       mnemonic = "STR";
+                       break;
+               case 1:
+                       instruction->type = ARM_STRH;
+                       mnemonic = "STRH";
+                       break;
+               case 2:
+                       instruction->type = ARM_STRB;
+                       mnemonic = "STRB";
+                       break;
+               case 3:
+                       instruction->type = ARM_LDRSB;
+                       mnemonic = "LDRSB";
+                       break;
+               case 4:
+                       instruction->type = ARM_LDR;
+                       mnemonic = "LDR";
+                       break;
+               case 5:
+                       instruction->type = ARM_LDRH;
+                       mnemonic = "LDRH";
+                       break;
+               case 6:
+                       instruction->type = ARM_LDRB;
+                       mnemonic = "LDRB";
+                       break;
+               case 7:
+                       instruction->type = ARM_LDRSH;
+                       mnemonic = "LDRSH";
+                       break;
+       }
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, [r%i, r%i]", address, opcode, mnemonic, Rd, Rn, Rm);
+       
+       instruction->info.load_store.Rd = Rd;
+       instruction->info.load_store.Rn = Rn;
+       instruction->info.load_store.index_mode = 0; /*offset*/
+       instruction->info.load_store.offset_mode = 1; /*register*/
+       instruction->info.load_store.offset.reg.Rm = Rm;
+
+       return ERROR_OK;
+}
+
+int evaluate_load_store_imm_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t offset = (opcode >> 6) & 0x1f;
+       uint8_t Rd = (opcode >> 0) & 0x7; 
+       uint8_t Rn = (opcode >> 3) & 0x7; 
+       uint32_t L = opcode & (1<<11);
+       uint32_t B = opcode & (1<<12);
+       char *mnemonic;
+       char suffix = ' ';
+       uint32_t shift = 2;
+
+       if (L)
+       {
+               instruction->type = ARM_LDR;
+               mnemonic = "LDR";
+       }
+       else
+       {
+               instruction->type = ARM_STR;
+               mnemonic = "STR";
+       }
+
+       if ((opcode&0xF000)==0x8000)
+       {
+               suffix = 'H';
+               shift = 1;
+       }
+       else if (B)
+       {
+               suffix = 'B';
+               shift = 0;
+       }
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s%c r%i, [r%i, #0x%x]", address, opcode, mnemonic, suffix, Rd, Rn, offset<<shift);
+       
+       instruction->info.load_store.Rd = Rd;
+       instruction->info.load_store.Rn = Rn;
+       instruction->info.load_store.index_mode = 0; /*offset*/
+       instruction->info.load_store.offset_mode = 0; /*immediate*/
+       instruction->info.load_store.offset.offset = offset<<shift;
+
+       return ERROR_OK;
+}
+
+int evaluate_load_store_stack_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t offset = opcode  & 0xff;
+       uint8_t Rd = (opcode >> 8) & 0x7; 
+       uint32_t L = opcode & (1<<11);
+       char *mnemonic;
+
+       if (L)
+       {
+               instruction->type = ARM_LDR;
+               mnemonic = "LDR";
+       }
+       else
+       {
+               instruction->type = ARM_STR;
+               mnemonic = "STR";
+       }
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s r%i, [SP, #0x%x]", address, opcode, mnemonic, Rd, offset*4);
+       
+       instruction->info.load_store.Rd = Rd;
+       instruction->info.load_store.Rn = 13 /*SP*/;
+       instruction->info.load_store.index_mode = 0; /*offset*/
+       instruction->info.load_store.offset_mode = 0; /*immediate*/
+       instruction->info.load_store.offset.offset = offset*4;
+
+       return ERROR_OK;
+}
+
+int evaluate_add_sp_pc_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t imm = opcode  & 0xff;
+       uint8_t Rd = (opcode >> 8) & 0x7; 
+       uint8_t Rn;
+       uint32_t SP = opcode & (1<<11);
+       char *reg_name;
+
+       instruction->type = ARM_ADD;
+       
+       if (SP)
+       {
+               reg_name = "SP";
+               Rn = 13;
+       }
+       else
+       {
+               reg_name = "PC";
+               Rn = 15;
+       }
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tADD r%i, %s, #0x%x", address, opcode, Rd,reg_name, imm*4);
+
+       instruction->info.data_proc.variant = 0 /* immediate */;
+       instruction->info.data_proc.Rd = Rd;
+       instruction->info.data_proc.Rn = Rn;
+       instruction->info.data_proc.shifter_operand.immediate.immediate = imm*4;
+
+       return ERROR_OK;
+}
+
+int evaluate_adjust_stack_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t imm = opcode  & 0x7f;
+       uint8_t opc = opcode & (1<<7);
+       char *mnemonic;
+
+       
+       if (opc)
+       {
+               instruction->type = ARM_SUB;
+               mnemonic = "SUB";
+       }
+       else
+       {
+               instruction->type = ARM_ADD;
+               mnemonic = "ADD";
+       }
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s SP, #0x%x", address, opcode, mnemonic, imm*4);
+
+       instruction->info.data_proc.variant = 0 /* immediate */;
+       instruction->info.data_proc.Rd = 13 /*SP*/;
+       instruction->info.data_proc.Rn = 13 /*SP*/;
+       instruction->info.data_proc.shifter_operand.immediate.immediate = imm*4;
+
+       return ERROR_OK;
+}
+
+int evaluate_breakpoint_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t imm = opcode  & 0xff;
+       
+       instruction->type = ARM_BKPT;
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tBKPT 0x%02x", address, opcode, imm);
+
+       return ERROR_OK;
+}
+
+int evaluate_load_store_multiple_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t reg_list = opcode  & 0xff;
+       uint32_t L = opcode & (1<<11);
+       uint32_t R = opcode & (1<<8);
+       uint8_t Rn = (opcode >> 8) & 7;
+       uint8_t addr_mode = 0 /* IA */;
+       char reg_names[40];
+       char *reg_names_p;
+       char *mnemonic;
+       char ptr_name[7] = "";
+       int i;  
+
+       if ((opcode & 0xf000) == 0xc000)
+       { /* generic load/store multiple */
+               if (L)
+               {
+                       instruction->type = ARM_LDM;
+                       mnemonic = "LDMIA";
+               }
+               else
+               {
+                       instruction->type = ARM_STM;
+                       mnemonic = "STMIA";
+               }
+               snprintf(ptr_name,7,"r%i!, ",Rn);
+       }
+       else
+       { /* push/pop */
+               Rn = 13; /* SP */
+               if (L)
+               {
+                       instruction->type = ARM_LDM;
+                       mnemonic = "POP";
+                       if (R)
+                               reg_list |= (1<<15) /*PC*/;
+               }
+               else
+               {
+                       instruction->type = ARM_STM;
+                       mnemonic = "PUSH";
+                       addr_mode = 3; /*DB*/
+                       if (R)
+                               reg_list |= (1<<14) /*LR*/;
+               }
+       }
+
+       reg_names_p = reg_names;
+       for (i = 0; i <= 15; i++)
+       {
+               if (reg_list & (1<<i))
+                       reg_names_p += snprintf(reg_names_p, (reg_names + 40 - reg_names_p), "r%i, ", i);
+       }
+       if (reg_names_p>reg_names)
+               reg_names_p[-2] = '\0';
+       else /* invalid op : no registers */
+               reg_names[0] = '\0';
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\t%s %s{%s}", address, opcode, mnemonic, ptr_name,reg_names);
+
+       instruction->info.load_store_multiple.register_list = reg_list;
+       instruction->info.load_store_multiple.Rn = Rn;
+       instruction->info.load_store_multiple.addressing_mode = addr_mode;
+
+       return ERROR_OK;
+}
+
+int evaluate_cond_branch_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       uint32_t offset = opcode  & 0xff;
+       uint8_t cond = (opcode >> 8) & 0xf;
+       uint32_t target_address;
+
+       if (cond == 0xf)
+       {
+               instruction->type = ARM_SWI;
+               snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tSWI 0x%02x", address, opcode, offset);
+               return ERROR_OK;
+       }
+       else if (cond == 0xe)
+       {
+               instruction->type = ARM_UNDEFINED_INSTRUCTION;
+               snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tUNDEFINED INSTRUCTION", address, opcode);
+               return ERROR_OK;
+       }
+
+       /* sign extend 8-bit offset */
+       if (offset & 0x00000080)
+               offset = 0xffffff00 | offset;
+       
+       target_address = address + 4 + (offset<<1);
+
+       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tB%s 0x%8.8x", address, opcode,
+                        arm_condition_strings[cond], target_address);
+       
+       instruction->type = ARM_B;
+       instruction->info.b_bl_bx_blx.reg_operand = -1;
+       instruction->info.b_bl_bx_blx.target_address = target_address;
+
+       return ERROR_OK;
+}
+
+int thumb_evaluate_opcode(uint16_t opcode, uint32_t address, arm_instruction_t *instruction)
+{
+       /* clear fields, to avoid confusion */
+       memset(instruction, 0, sizeof(arm_instruction_t));
+       instruction->opcode = opcode;
+       
+       if ((opcode & 0xe000) == 0x0000)
+       {
+               /* add/substract register or immediate */
+               if ((opcode & 0x1800) == 0x1800)
+                       return evaluate_add_sub_thumb(opcode, address, instruction);
+               /* shift by immediate */
+               else
+                       return evaluate_shift_imm_thumb(opcode, address, instruction);
+       }
+       
+       /* Add/substract/compare/move immediate */
+       if ((opcode & 0xe000) == 0x2000)
+       {
+               return evaluate_data_proc_imm_thumb(opcode, address, instruction);
+       }
+       
+       /* Data processing instructions */
+       if ((opcode & 0xf800) == 0x4000)
+       {
+               return evaluate_data_proc_thumb(opcode, address, instruction);
+       }
+       
+       /* Load from literal pool */
+       if ((opcode & 0xf800) == 0x4800)
+       {
+               return evaluate_load_literal_thumb(opcode, address, instruction);
+       }
+
+       /* Load/Store register offset */
+       if ((opcode & 0xf000) == 0x5000)
+       {
+               return evaluate_load_store_reg_thumb(opcode, address, instruction);
+       }
+
+       /* Load/Store immediate offset */
+       if (((opcode & 0xe000) == 0x6000)
+               ||((opcode & 0xf000) == 0x8000))
+       {
+               return evaluate_load_store_imm_thumb(opcode, address, instruction);
+       }
+       
+       /* Load/Store from/to stack */
+       if ((opcode & 0xf000) == 0x9000)
+       {
+               return evaluate_load_store_stack_thumb(opcode, address, instruction);
+       }
+
+       /* Add to SP/PC */
+       if ((opcode & 0xf000) == 0xa000)
+       {
+               return evaluate_add_sp_pc_thumb(opcode, address, instruction);
+       }
+
+       /* Misc */
+       if ((opcode & 0xf000) == 0xb000)
+       {
+               if ((opcode & 0x0f00) == 0x0000)
+                       return evaluate_adjust_stack_thumb(opcode, address, instruction);
+               else if ((opcode & 0x0f00) == 0x0e00)
+                       return evaluate_breakpoint_thumb(opcode, address, instruction);
+               else if ((opcode & 0x0600) == 0x0400) /* push pop */
+                       return evaluate_load_store_multiple_thumb(opcode, address, instruction);
+               else
+               {
+                       instruction->type = ARM_UNDEFINED_INSTRUCTION;
+                       snprintf(instruction->text, 128, "0x%8.8x\t0x%4.4x\tUNDEFINED INSTRUCTION", address, opcode);
+                       return ERROR_OK;
+               }
+       }
+
+       /* Load/Store multiple */
+       if ((opcode & 0xf000) == 0xc000)
+       {
+               return evaluate_load_store_multiple_thumb(opcode, address, instruction);
+       }
+
+       /* Conditional branch + SWI */
+       if ((opcode & 0xf000) == 0xd000)
+       {
+               return evaluate_cond_branch_thumb(opcode, address, instruction);
+       }
+       
+       if ((opcode & 0xe000) == 0xe000)
+       {
+               /* Undefined instructions */
+               if ((opcode & 0xf801) == 0xe801)
+               {
+                       instruction->type = ARM_UNDEFINED_INSTRUCTION;
+                       snprintf(instruction->text, 128, "0x%8.8x\t0x%8.8x\tUNDEFINED INSTRUCTION", address, opcode);
+                       return ERROR_OK;
+               }
+               else
+               { /* Branch to offset */
+                       return evaluate_b_bl_blx_thumb(opcode, address, instruction);
+               }
+       }
+
+       LOG_ERROR("should never reach this point (opcode=%04x)",opcode);
+       return -1;
+}
+
+int arm_access_size(arm_instruction_t *instruction)
+{
+       if ((instruction->type == ARM_LDRB)
+               || (instruction->type == ARM_LDRBT)
+               || (instruction->type == ARM_LDRSB)
+               || (instruction->type == ARM_STRB)
+               || (instruction->type == ARM_STRBT))
+       {
+               return 1;
+       }
+       else if ((instruction->type == ARM_LDRH)
+               || (instruction->type == ARM_LDRSH)
+               || (instruction->type == ARM_STRH))
+       {
+               return 2;
+       }
+       else if ((instruction->type == ARM_LDR)
+               || (instruction->type == ARM_LDRT)
+               || (instruction->type == ARM_STR)
+               || (instruction->type == ARM_STRT))
+       {
+               return 4;
+       }
+       else if ((instruction->type == ARM_LDRD)
+               || (instruction->type == ARM_STRD))
+       {
+               return 8;
+       }
+       else
+       {
+               LOG_ERROR("BUG: instruction type %i isn't a load/store instruction", instruction->type);
+               return 0;
+       }
+}