diff options
| -rw-r--r-- | src/target/arm_disassembler.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/src/target/arm_disassembler.c b/src/target/arm_disassembler.c index 0478ee9..f963b99 100644 --- a/src/target/arm_disassembler.c +++ b/src/target/arm_disassembler.c @@ -1395,6 +1395,7 @@ int evaluate_add_sub_thumb(uint16_t opcode, uint32_t address, arm_instruction_t } else { + /* REVISIT: if reg_imm == 0, display as "MOVS" */ instruction->type = ARM_ADD; mnemonic = "ADDS"; } @@ -3017,17 +3018,18 @@ static int t2ev_data_shift(uint32_t opcode, uint32_t address, char *mnemonic; char *suffix = ""; - immed |= (opcode >> 10) & 0x7; - if (opcode & (1 << 21)) + immed |= (opcode >> 10) & 0x1c; + if (opcode & (1 << 20)) suffix = "S"; switch (op) { case 0: if (rd == 0xf) { - if (!(opcode & (1 << 21))) + if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_TST; mnemonic = "TST"; + suffix = ""; goto two; } instruction->type = ARM_AND; @@ -3058,7 +3060,7 @@ static int t2ev_data_shift(uint32_t opcode, uint32_t address, break; default: if (immed == 0) { - sprintf(cp, "RRX%s.W\tr%d, r%d", + sprintf(cp, "RRX%s\tr%d, r%d", suffix, rd, (int) (opcode & 0xf)); return ERROR_OK; @@ -3085,10 +3087,11 @@ static int t2ev_data_shift(uint32_t opcode, uint32_t address, break; case 4: if (rd == 0xf) { - if (!(opcode & (1 << 21))) + if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_TEQ; mnemonic = "TEQ"; + suffix = ""; goto two; } instruction->type = ARM_EOR; @@ -3096,10 +3099,11 @@ static int t2ev_data_shift(uint32_t opcode, uint32_t address, break; case 8: if (rd == 0xf) { - if (!(opcode & (1 << 21))) + if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_CMN; mnemonic = "CMN"; + suffix = ""; goto two; } instruction->type = ARM_ADD; @@ -3119,6 +3123,7 @@ static int t2ev_data_shift(uint32_t opcode, uint32_t address, return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_CMP; mnemonic = "CMP"; + suffix = ""; goto two; } instruction->type = ARM_SUB; @@ -3146,13 +3151,17 @@ shift: break; case 1: suffix = "LSR"; + if (immed == 32) + immed = 0; break; case 2: suffix = "ASR"; + if (immed == 32) + immed = 0; break; case 3: if (immed == 0) { - strcpy(cp, "RRX"); + strcpy(cp, ", RRX"); return ERROR_OK; } suffix = "ROR"; |