/*************************************************************************** * Copyright (C) 2006 by Dominic Rath * * Dominic.Rath@gmx.de * * * * Copyright (C) 2009 by David Brownell * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "target.h" #include "arm_disassembler.h" #include "log.h" /* * This disassembler supports two main functions for OpenOCD: * * - Various "disassemble" commands. OpenOCD can serve as a * machine-language debugger, without help from GDB. * * - Single stepping. Not all ARM cores support hardware single * stepping. To work without that support, the debugger must * be able to decode instructions to find out where to put a * "next instruction" breakpoint. * * In addition, interpretation of ETM trace data needs some of the * decoding mechanisms. * * At this writing (September 2009) neither function is complete. * * - ARM decoding * * Old-style syntax (not UAL) is generally used * * VFP instructions are not understood (ARMv5 and later) * except as coprocessor 10/11 operations * * Most ARM instructions through ARMv6 are decoded, but some * of the post-ARMv4 opcodes may not be handled yet * * NEON instructions are not understood (ARMv7-A) * * - Thumb/Thumb2 decoding * * UAL syntax should be consistently used * * Any Thumb2 instructions used in Cortex-M3 (ARMv7-M) should * be handled properly. Accordingly, so should the subset * used in Cortex-M0/M1; and "original" 16-bit Thumb from * ARMv4T and ARMv5T. * * Conditional effects of Thumb2 "IT" (if-then) instructions * are not handled: the affected instructions are not shown * with their now-conditional suffixes. * * Some ARMv6 and ARMv7-M Thumb2 instructions may not be * handled (minimally for coprocessor access). * * SIMD instructions, and some other Thumb2 instructions * from ARMv7-A, are not understood. * * - ThumbEE decoding * * As a Thumb2 variant, the Thumb2 comments (above) apply. * * Opcodes changed by ThumbEE mode are not handled; these * instructions wrongly decode as LDM and STM. * * - Jazelle decoding ... no support whatsoever for Jazelle mode * or decoding. ARM encourages use of the more generic ThumbEE * mode, instead of Jazelle mode, in current chips. * * - Single-step/emulation ... spotty support, which is only weakly * tested. Thumb2 is not supported. (Arguably a full simulator * is not needed to support just single stepping. Recognizing * branch vs non-branch instructions suffices, except when the * instruction faults and triggers a synchronous exception which * can be intercepted using other means.) * * ARM DDI 0406B "ARM Architecture Reference Manual, ARM v7-A and * ARM v7-R edition" gives the most complete coverage of the various * generations of ARM instructions. At this writing it is publicly * accessible to anyone willing to create an account at the ARM * web site; see http://www.arm.com/documentation/ for information. * * ARM DDI 0403C "ARMv7-M Architecture Reference Manual" provides * more details relevant to the Thumb2-only processors (such as * the Cortex-M implementations). */ /* textual represenation of the condition field */ /* ALways (default) is ommitted (empty string) */ static const char *arm_condition_strings[] = { "EQ", "NE", "CS", "CC", "MI", "PL", "VS", "VC", "HI", "LS", "GE", "LT", "GT", "LE", "", "NV" }; /* make up for C's missing ROR */ static uint32_t ror(uint32_t value, int places) { return (value >> places) | (value << (32 - places)); } static int evaluate_pld(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { /* PLD */ if ((opcode & 0x0d70f000) == 0x0550f000) { instruction->type = ARM_PLD; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tPLD ...TODO...", address, opcode); return ERROR_OK; } else { instruction->type = ARM_UNDEFINED_INSTRUCTION; return ERROR_OK; } LOG_ERROR("should never reach this point"); return -1; } static int evaluate_swi(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { instruction->type = ARM_SWI; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tSVC %#6.6" PRIx32, address, opcode, (opcode & 0xffffff)); return ERROR_OK; } static int evaluate_blx_imm(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { int offset; uint32_t immediate; uint32_t target_address; instruction->type = ARM_BLX; immediate = opcode & 0x00ffffff; /* sign extend 24-bit immediate */ if (immediate & 0x00800000) offset = 0xff000000 | immediate; else offset = immediate; /* shift two bits left */ offset <<= 2; /* odd/event halfword */ if (opcode & 0x01000000) offset |= 0x2; target_address = address + 8 + offset; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tBLX 0x%8.8" PRIx32 "", address, opcode, target_address); instruction->info.b_bl_bx_blx.reg_operand = -1; instruction->info.b_bl_bx_blx.target_address = target_address; return ERROR_OK; } static int evaluate_b_bl(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { uint8_t L; uint32_t immediate; int offset; uint32_t target_address; immediate = opcode & 0x00ffffff; L = (opcode & 0x01000000) >> 24; /* sign extend 24-bit immediate */ if (immediate & 0x00800000) offset = 0xff000000 | immediate; else offset = immediate; /* shift two bits left */ offset <<= 2; target_address = address + 8 + offset; if (L) instruction->type = ARM_BL; else instruction->type = ARM_B; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tB%s%s 0x%8.8" PRIx32 , address, opcode, (L) ? "L" : "", COND(opcode), target_address); instruction->info.b_bl_bx_blx.reg_operand = -1; instruction->info.b_bl_bx_blx.target_address = target_address; return ERROR_OK; } /* Coprocessor load/store and double register transfers */ /* both normal and extended instruction space (condition field b1111) */ static int evaluate_ldc_stc_mcrr_mrrc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { uint8_t cp_num = (opcode & 0xf00) >> 8; /* MCRR or MRRC */ if (((opcode & 0x0ff00000) == 0x0c400000) || ((opcode & 0x0ff00000) == 0x0c400000)) { uint8_t cp_opcode, Rd, Rn, CRm; char *mnemonic; cp_opcode = (opcode & 0xf0) >> 4; Rd = (opcode & 0xf000) >> 12; Rn = (opcode & 0xf0000) >> 16; CRm = (opcode & 0xf); /* MCRR */ if ((opcode & 0x0ff00000) == 0x0c400000) { instruction->type = ARM_MCRR; mnemonic = "MCRR"; } /* MRRC */ if ((opcode & 0x0ff00000) == 0x0c500000) { instruction->type = ARM_MRRC; mnemonic = "MRRC"; } snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s p%i, %x, r%i, r%i, c%i", address, opcode, mnemonic, COND(opcode), cp_num, cp_opcode, Rd, Rn, CRm); } else /* LDC or STC */ { uint8_t CRd, Rn, offset; uint8_t U, N; char *mnemonic; char addressing_mode[32]; CRd = (opcode & 0xf000) >> 12; Rn = (opcode & 0xf0000) >> 16; offset = (opcode & 0xff); /* load/store */ if (opcode & 0x00100000) { instruction->type = ARM_LDC; mnemonic = "LDC"; } else { instruction->type = ARM_STC; mnemonic = "STC"; } U = (opcode & 0x00800000) >> 23; N = (opcode & 0x00400000) >> 22; /* addressing modes */ if ((opcode & 0x01200000) == 0x01000000) /* immediate offset */ snprintf(addressing_mode, 32, "[r%i, #%s0x%2.2x*4]", Rn, (U) ? "" : "-", offset); else if ((opcode & 0x01200000) == 0x01200000) /* immediate pre-indexed */ snprintf(addressing_mode, 32, "[r%i, #%s0x%2.2x*4]!", Rn, (U) ? "" : "-", offset); else if ((opcode & 0x01200000) == 0x00200000) /* immediate post-indexed */ snprintf(addressing_mode, 32, "[r%i], #%s0x%2.2x*4", Rn, (U) ? "" : "-", offset); else if ((opcode & 0x01200000) == 0x00000000) /* unindexed */ snprintf(addressing_mode, 32, "[r%i], #0x%2.2x", Rn, offset); snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s p%i, c%i, %s", address, opcode, mnemonic, ((opcode & 0xf0000000) == 0xf0000000) ? COND(opcode) : "2", (N) ? "L" : "", cp_num, CRd, addressing_mode); } return ERROR_OK; } /* Coprocessor data processing instructions */ /* Coprocessor register transfer instructions */ /* both normal and extended instruction space (condition field b1111) */ static int evaluate_cdp_mcr_mrc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { const char *cond; char* mnemonic; uint8_t cp_num, opcode_1, CRd_Rd, CRn, CRm, opcode_2; cond = ((opcode & 0xf0000000) == 0xf0000000) ? "2" : COND(opcode); cp_num = (opcode & 0xf00) >> 8; CRd_Rd = (opcode & 0xf000) >> 12; CRn = (opcode & 0xf0000) >> 16; CRm = (opcode & 0xf); opcode_2 = (opcode & 0xe0) >> 5; /* CDP or MRC/MCR */ if (opcode & 0x00000010) /* bit 4 set -> MRC/MCR */ { if (opcode & 0x00100000) /* bit 20 set -> MRC */ { instruction->type = ARM_MRC; mnemonic = "MRC"; } else /* bit 20 not set -> MCR */ { instruction->type = ARM_MCR; mnemonic = "MCR"; } opcode_1 = (opcode & 0x00e00000) >> 21; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s p%i, 0x%2.2x, r%i, c%i, c%i, 0x%2.2x", address, opcode, mnemonic, cond, cp_num, opcode_1, CRd_Rd, CRn, CRm, opcode_2); } else /* bit 4 not set -> CDP */ { instruction->type = ARM_CDP; mnemonic = "CDP"; opcode_1 = (opcode & 0x00f00000) >> 20; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s p%i, 0x%2.2x, c%i, c%i, c%i, 0x%2.2x", address, opcode, mnemonic, cond, cp_num, opcode_1, CRd_Rd, CRn, CRm, opcode_2); } return ERROR_OK; } /* Load/store instructions */ static int evaluate_load_store(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { 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]; /* examine flags */ I = (opcode & 0x02000000) >> 25; P = (opcode & 0x01000000) >> 24; U = (opcode & 0x00800000) >> 23; B = (opcode & 0x00400000) >> 22; W = (opcode & 0x00200000) >> 21; L = (opcode & 0x00100000) >> 20; /* target register */ Rd = (opcode & 0xf000) >> 12; /* base register */ Rn = (opcode & 0xf0000) >> 16; instruction->info.load_store.Rd = Rd; instruction->info.load_store.Rn = Rn; instruction->info.load_store.U = U; /* determine operation */ if (L) operation = "LDR"; else operation = "STR"; /* determine instruction type and suffix */ if (B) { if ((P == 0) && (W == 1)) { if (L) instruction->type = ARM_LDRBT; else instruction->type = ARM_STRBT; suffix = "BT"; } else { if (L) instruction->type = ARM_LDRB; else instruction->type = ARM_STRB; suffix = "B"; } } else { if ((P == 0) && (W == 1)) { if (L) instruction->type = ARM_LDRT; else instruction->type = ARM_STRT; suffix = "T"; } else { if (L) instruction->type = ARM_LDR; else instruction->type = ARM_STR; suffix = ""; } } if (!I) /* #+- */ { uint32_t offset_12 = (opcode & 0xfff); if (offset_12) snprintf(offset, 32, ", #%s0x%" PRIx32 "", (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 +- or +-, , # */ { uint8_t shift_imm, shift; uint8_t Rm; shift_imm = (opcode & 0xf80) >> 7; shift = (opcode & 0x60) >> 5; Rm = (opcode & 0xf); /* 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; instruction->info.load_store.offset_mode = 1; instruction->info.load_store.offset.reg.Rm = Rm; instruction->info.load_store.offset.reg.shift = shift; instruction->info.load_store.offset.reg.shift_imm = shift_imm; if ((shift_imm == 0x0) && (shift == 0x0)) /* +- */ { snprintf(offset, 32, ", %sr%i", (U) ? "" : "-", Rm); } else /* +-, , # */ { switch (shift) { case 0x0: /* LSL */ 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); break; case 0x2: /* ASR */ 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); break; case 0x4: /* RRX */ snprintf(offset, 32, ", %sr%i, RRX", (U) ? "" : "-", Rm); break; } } } if (P == 1) { if (W == 0) /* offset */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, [r%i%s]", address, opcode, operation, COND(opcode), suffix, Rd, Rn, offset); instruction->info.load_store.index_mode = 0; } else /* pre-indexed */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, [r%i%s]!", address, opcode, operation, COND(opcode), suffix, Rd, Rn, offset); instruction->info.load_store.index_mode = 1; } } else /* post-indexed */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, [r%i]%s", address, opcode, operation, COND(opcode), suffix, Rd, Rn, offset); instruction->info.load_store.index_mode = 2; } return ERROR_OK; } static int evaluate_extend(uint32_t opcode, uint32_t address, char *cp) { unsigned rm = (opcode >> 0) & 0xf; unsigned rd = (opcode >> 12) & 0xf; unsigned rn = (opcode >> 16) & 0xf; char *type, *rot; switch ((opcode >> 24) & 0x3) { case 0: type = "B16"; break; case 1: sprintf(cp, "UNDEFINED"); return ARM_UNDEFINED_INSTRUCTION; case 2: type = "B"; break; default: type = "H"; break; } switch ((opcode >> 10) & 0x3) { case 0: rot = ""; break; case 1: rot = ", ROR #8"; break; case 2: rot = ", ROR #16"; break; default: rot = ", ROR #24"; break; } if (rn == 0xf) { sprintf(cp, "%cXT%s%s\tr%d, r%d%s", (opcode & (1 << 22)) ? 'U' : 'S', type, COND(opcode), rd, rm, rot); return ARM_MOV; } else { sprintf(cp, "%cXTA%s%s\tr%d, r%d, r%d%s", (opcode & (1 << 22)) ? 'U' : 'S', type, COND(opcode), rd, rn, rm, rot); return ARM_ADD; } } static int evaluate_p_add_sub(uint32_t opcode, uint32_t address, char *cp) { char *prefix; char *op; int type; switch ((opcode >> 20) & 0x7) { case 1: prefix = "S"; break; case 2: prefix = "Q"; break; case 3: prefix = "SH"; break; case 5: prefix = "U"; break; case 6: prefix = "UQ"; break; case 7: prefix = "UH"; break; default: goto undef; } switch ((opcode >> 5) & 0x7) { case 0: op = "ADD16"; type = ARM_ADD; break; case 1: op = "ADDSUBX"; type = ARM_ADD; break; case 2: op = "SUBADDX"; type = ARM_SUB; break; case 3: op = "SUB16"; type = ARM_SUB; break; case 4: op = "ADD8"; type = ARM_ADD; break; case 7: op = "SUB8"; type = ARM_SUB; break; default: goto undef; } sprintf(cp, "%s%s%s\tr%d, r%d, r%d", prefix, op, COND(opcode), (int) (opcode >> 12) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); return type; undef: /* these opcodes might be used someday */ sprintf(cp, "UNDEFINED"); return ARM_UNDEFINED_INSTRUCTION; } /* ARMv6 and later support "media" instructions (includes SIMD) */ static int evaluate_media(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { char *cp = instruction->text; char *mnemonic = NULL; sprintf(cp, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t", address, opcode); cp = strchr(cp, 0); /* parallel add/subtract */ if ((opcode & 0x01800000) == 0x00000000) { instruction->type = evaluate_p_add_sub(opcode, address, cp); return ERROR_OK; } /* halfword pack */ if ((opcode & 0x01f00020) == 0x00800000) { char *type, *shift; unsigned imm = (unsigned) (opcode >> 7) & 0x1f; if (opcode & (1 << 6)) { type = "TB"; shift = "ASR"; if (imm == 0) imm = 32; } else { type = "BT"; shift = "LSL"; } sprintf(cp, "PKH%s%s\tr%d, r%d, r%d, %s #%d", type, COND(opcode), (int) (opcode >> 12) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, shift, imm); return ERROR_OK; } /* word saturate */ if ((opcode & 0x01a00020) == 0x00a00000) { char *shift; unsigned imm = (unsigned) (opcode >> 7) & 0x1f; if (opcode & (1 << 6)) { shift = "ASR"; if (imm == 0) imm = 32; } else { shift = "LSL"; } sprintf(cp, "%cSAT%s\tr%d, #%d, r%d, %s #%d", (opcode & (1 << 22)) ? 'U' : 'S', COND(opcode), (int) (opcode >> 12) & 0xf, (int) (opcode >> 16) & 0x1f, (int) (opcode >> 0) & 0xf, shift, imm); return ERROR_OK; } /* sign extension */ if ((opcode & 0x018000f0) == 0x00800070) { instruction->type = evaluate_extend(opcode, address, cp); return ERROR_OK; } /* multiplies */ if ((opcode & 0x01f00080) == 0x01000000) { unsigned rn = (opcode >> 12) & 0xf; if (rn != 0xf) sprintf(cp, "SML%cD%s%s\tr%d, r%d, r%d, r%d", (opcode & (1 << 6)) ? 'S' : 'A', (opcode & (1 << 5)) ? "X" : "", COND(opcode), (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf, rn); else sprintf(cp, "SMU%cD%s%s\tr%d, r%d, r%d", (opcode & (1 << 6)) ? 'S' : 'A', (opcode & (1 << 5)) ? "X" : "", COND(opcode), (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf); return ERROR_OK; } if ((opcode & 0x01f00000) == 0x01400000) { sprintf(cp, "SML%cLD%s%s\tr%d, r%d, r%d, r%d", (opcode & (1 << 6)) ? 'S' : 'A', (opcode & (1 << 5)) ? "X" : "", COND(opcode), (int) (opcode >> 12) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf); return ERROR_OK; } if ((opcode & 0x01f00000) == 0x01500000) { unsigned rn = (opcode >> 12) & 0xf; switch (opcode & 0xc0) { case 3: if (rn == 0xf) goto undef; /* FALL THROUGH */ case 0: break; default: goto undef; } if (rn != 0xf) sprintf(cp, "SMML%c%s%s\tr%d, r%d, r%d, r%d", (opcode & (1 << 6)) ? 'S' : 'A', (opcode & (1 << 5)) ? "R" : "", COND(opcode), (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf, rn); else sprintf(cp, "SMMUL%s%s\tr%d, r%d, r%d", (opcode & (1 << 5)) ? "R" : "", COND(opcode), (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf); return ERROR_OK; } /* simple matches against the remaining decode bits */ switch (opcode & 0x01f000f0) { case 0x00a00030: case 0x00e00030: /* parallel halfword saturate */ sprintf(cp, "%cSAT16%s\tr%d, #%d, r%d", (opcode & (1 << 22)) ? 'U' : 'S', COND(opcode), (int) (opcode >> 12) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); return ERROR_OK; case 0x00b00030: mnemonic = "REV"; break; case 0x00b000b0: mnemonic = "REV16"; break; case 0x00f000b0: mnemonic = "REVSH"; break; case 0x008000b0: /* select bytes */ sprintf(cp, "SEL%s\tr%d, r%d, r%d", COND(opcode), (int) (opcode >> 12) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); return ERROR_OK; case 0x01800010: /* unsigned sum of absolute differences */ if (((opcode >> 12) & 0xf) == 0xf) sprintf(cp, "USAD8%s\tr%d, r%d, r%d", COND(opcode), (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf); else sprintf(cp, "USADA8%s\tr%d, r%d, r%d, r%d", COND(opcode), (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, (int) (opcode >> 8) & 0xf, (int) (opcode >> 12) & 0xf); return ERROR_OK; } if (mnemonic) { unsigned rm = (opcode >> 0) & 0xf; unsigned rd = (opcode >> 12) & 0xf; sprintf(cp, "%s%s\tr%d, r%d", mnemonic, COND(opcode), rm, rd); return ERROR_OK; } undef: /* these opcodes might be used someday */ sprintf(cp, "UNDEFINED"); return ERROR_OK; } /* Miscellaneous load/store instructions */ static int evaluate_misc_load_store(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { 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]; /* examine flags */ P = (opcode & 0x01000000) >> 24; U = (opcode & 0x00800000) >> 23; I = (opcode & 0x00400000) >> 22; W = (opcode & 0x00200000) >> 21; L = (opcode & 0x00100000) >> 20; S = (opcode & 0x00000040) >> 6; H = (opcode & 0x00000020) >> 5; /* target register */ Rd = (opcode & 0xf000) >> 12; /* base register */ Rn = (opcode & 0xf0000) >> 16; instruction->info.load_store.Rd = Rd; instruction->info.load_store.Rn = Rn; instruction->info.load_store.U = U; /* determine instruction type and suffix */ if (S) /* signed */ { if (L) /* load */ { if (H) { operation = "LDR"; instruction->type = ARM_LDRSH; suffix = "SH"; } else { operation = "LDR"; instruction->type = ARM_LDRSB; suffix = "SB"; } } else /* there are no signed stores, so this is used to encode double-register load/stores */ { suffix = "D"; if (H) { operation = "STR"; instruction->type = ARM_STRD; } else { operation = "LDR"; instruction->type = ARM_LDRD; } } } else /* unsigned */ { suffix = "H"; if (L) /* load */ { operation = "LDR"; instruction->type = ARM_LDRH; } else /* store */ { operation = "STR"; instruction->type = ARM_STRH; } } if (I) /* Immediate offset/index (#+-)*/ { uint32_t offset_8 = ((opcode & 0xf00) >> 4) | (opcode & 0xf); snprintf(offset, 32, "#%s0x%" PRIx32 "", (U) ? "" : "-", offset_8); instruction->info.load_store.offset_mode = 0; instruction->info.load_store.offset.offset = offset_8; } else /* Register offset/index (+-) */ { uint8_t Rm; Rm = (opcode & 0xf); snprintf(offset, 32, "%sr%i", (U) ? "" : "-", Rm); instruction->info.load_store.offset_mode = 1; instruction->info.load_store.offset.reg.Rm = Rm; instruction->info.load_store.offset.reg.shift = 0x0; instruction->info.load_store.offset.reg.shift_imm = 0x0; } if (P == 1) { if (W == 0) /* offset */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, [r%i, %s]", address, opcode, operation, COND(opcode), suffix, Rd, Rn, offset); instruction->info.load_store.index_mode = 0; } else /* pre-indexed */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, [r%i, %s]!", address, opcode, operation, COND(opcode), suffix, Rd, Rn, offset); instruction->info.load_store.index_mode = 1; } } else /* post-indexed */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, [r%i], %s", address, opcode, operation, COND(opcode), suffix, Rd, Rn, offset); instruction->info.load_store.index_mode = 2; } return ERROR_OK; } /* Load/store multiples instructions */ static int evaluate_ldm_stm(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { uint8_t P, U, S, W, L, Rn; uint32_t register_list; char *addressing_mode; char *mnemonic; char reg_list[69]; char *reg_list_p; int i; int first_reg = 1; P = (opcode & 0x01000000) >> 24; U = (opcode & 0x00800000) >> 23; S = (opcode & 0x00400000) >> 22; W = (opcode & 0x00200000) >> 21; L = (opcode & 0x00100000) >> 20; register_list = (opcode & 0xffff); Rn = (opcode & 0xf0000) >> 16; instruction->info.load_store_multiple.Rn = Rn; instruction->info.load_store_multiple.register_list = register_list; instruction->info.load_store_multiple.S = S; instruction->info.load_store_multiple.W = W; if (L) { instruction->type = ARM_LDM; mnemonic = "LDM"; } else { instruction->type = ARM_STM; mnemonic = "STM"; } if (P) { if (U) { instruction->info.load_store_multiple.addressing_mode = 1; addressing_mode = "IB"; } else { instruction->info.load_store_multiple.addressing_mode = 3; addressing_mode = "DB"; } } else { if (U) { instruction->info.load_store_multiple.addressing_mode = 0; /* "IA" is the default in UAL syntax */ addressing_mode = ""; } else { instruction->info.load_store_multiple.addressing_mode = 2; addressing_mode = "DA"; } } reg_list_p = reg_list; for (i = 0; i <= 15; i++) { if ((register_list >> i) & 1) { if (first_reg) { first_reg = 0; reg_list_p += snprintf(reg_list_p, (reg_list + 69 - reg_list_p), "r%i", i); } else { reg_list_p += snprintf(reg_list_p, (reg_list + 69 - reg_list_p), ", r%i", i); } } } snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i%s, {%s}%s", address, opcode, mnemonic, COND(opcode), addressing_mode, Rn, (W) ? "!" : "", reg_list, (S) ? "^" : ""); return ERROR_OK; } /* Multiplies, extra load/stores */ static 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) { /* Multiply (accumulate) */ if ((opcode & 0x0f800000) == 0x00000000) { uint8_t Rm, Rs, Rn, Rd, S; Rm = opcode & 0xf; Rs = (opcode & 0xf00) >> 8; Rn = (opcode & 0xf000) >> 12; Rd = (opcode & 0xf0000) >> 16; S = (opcode & 0x00100000) >> 20; /* examine A bit (accumulate) */ if (opcode & 0x00200000) { instruction->type = ARM_MLA; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tMLA%s%s r%i, r%i, r%i, r%i", address, opcode, COND(opcode), (S) ? "S" : "", Rd, Rm, Rs, Rn); } else { instruction->type = ARM_MUL; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tMUL%s%s r%i, r%i, r%i", address, opcode, COND(opcode), (S) ? "S" : "", Rd, Rm, Rs); } return ERROR_OK; } /* Multiply (accumulate) long */ if ((opcode & 0x0f800000) == 0x00800000) { char* mnemonic = NULL; uint8_t Rm, Rs, RdHi, RdLow, S; Rm = opcode & 0xf; Rs = (opcode & 0xf00) >> 8; RdHi = (opcode & 0xf000) >> 12; RdLow = (opcode & 0xf0000) >> 16; S = (opcode & 0x00100000) >> 20; switch ((opcode & 0x00600000) >> 21) { case 0x0: instruction->type = ARM_UMULL; mnemonic = "UMULL"; break; case 0x1: instruction->type = ARM_UMLAL; mnemonic = "UMLAL"; break; case 0x2: instruction->type = ARM_SMULL; mnemonic = "SMULL"; break; case 0x3: instruction->type = ARM_SMLAL; mnemonic = "SMLAL"; break; } snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, r%i, r%i, r%i", address, opcode, mnemonic, COND(opcode), (S) ? "S" : "", RdLow, RdHi, Rm, Rs); return ERROR_OK; } /* Swap/swap byte */ if ((opcode & 0x0f800000) == 0x01000000) { uint8_t Rm, Rd, Rn; Rm = opcode & 0xf; Rd = (opcode & 0xf000) >> 12; Rn = (opcode & 0xf0000) >> 16; /* examine B flag */ instruction->type = (opcode & 0x00400000) ? ARM_SWPB : ARM_SWP; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s r%i, r%i, [r%i]", address, opcode, (opcode & 0x00400000) ? "SWPB" : "SWP", COND(opcode), Rd, Rm, Rn); return ERROR_OK; } } return evaluate_misc_load_store(opcode, address, instruction); } static int evaluate_mrs_msr(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { int R = (opcode & 0x00400000) >> 22; char *PSR = (R) ? "SPSR" : "CPSR"; /* Move register to status register (MSR) */ if (opcode & 0x00200000) { instruction->type = ARM_MSR; /* immediate variant */ if (opcode & 0x02000000) { uint8_t immediate = (opcode & 0xff); uint8_t rotate = (opcode & 0xf00); snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tMSR%s %s_%s%s%s%s, 0x%8.8" PRIx32 , address, opcode, COND(opcode), PSR, (opcode & 0x10000) ? "c" : "", (opcode & 0x20000) ? "x" : "", (opcode & 0x40000) ? "s" : "", (opcode & 0x80000) ? "f" : "", ror(immediate, (rotate * 2)) ); } else /* register variant */ { uint8_t Rm = opcode & 0xf; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tMSR%s %s_%s%s%s%s, r%i", address, opcode, COND(opcode), PSR, (opcode & 0x10000) ? "c" : "", (opcode & 0x20000) ? "x" : "", (opcode & 0x40000) ? "s" : "", (opcode & 0x80000) ? "f" : "", Rm ); } } else /* Move status register to register (MRS) */ { uint8_t Rd; instruction->type = ARM_MRS; Rd = (opcode & 0x0000f000) >> 12; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tMRS%s r%i, %s", address, opcode, COND(opcode), Rd, PSR); } return ERROR_OK; } /* Miscellaneous instructions */ static int evaluate_misc_instr(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { /* MRS/MSR */ if ((opcode & 0x000000f0) == 0x00000000) { evaluate_mrs_msr(opcode, address, instruction); } /* BX */ if ((opcode & 0x006000f0) == 0x00200010) { uint8_t Rm; instruction->type = ARM_BX; Rm = opcode & 0xf; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tBX%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; } /* BXJ - "Jazelle" support (ARMv5-J) */ if ((opcode & 0x006000f0) == 0x00200020) { uint8_t Rm; instruction->type = ARM_BX; Rm = opcode & 0xf; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tBXJ%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; } /* CLZ */ if ((opcode & 0x006000f0) == 0x00600010) { uint8_t Rm, Rd; instruction->type = ARM_CLZ; Rm = opcode & 0xf; Rd = (opcode & 0xf000) >> 12; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tCLZ%s r%i, r%i", address, opcode, COND(opcode), Rd, Rm); } /* BLX(2) */ if ((opcode & 0x006000f0) == 0x00200030) { uint8_t Rm; instruction->type = ARM_BLX; Rm = opcode & 0xf; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\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) { uint8_t Rm, Rd, Rn; char *mnemonic = NULL; Rm = opcode & 0xf; Rd = (opcode & 0xf000) >> 12; Rn = (opcode & 0xf0000) >> 16; switch ((opcode & 0x00600000) >> 21) { case 0x0: instruction->type = ARM_QADD; mnemonic = "QADD"; break; case 0x1: instruction->type = ARM_QSUB; mnemonic = "QSUB"; break; case 0x2: instruction->type = ARM_QDADD; mnemonic = "QDADD"; break; case 0x3: instruction->type = ARM_QDSUB; mnemonic = "QDSUB"; break; } snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s r%i, r%i, r%i", address, opcode, mnemonic, COND(opcode), Rd, Rm, Rn); } /* Software breakpoints */ if ((opcode & 0x0000000f0) == 0x00000070) { uint32_t immediate; instruction->type = ARM_BKPT; immediate = ((opcode & 0x000fff00) >> 4) | (opcode & 0xf); snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tBKPT 0x%4.4" PRIx32 "", address, opcode, immediate); } /* Enhanced DSP multiplies */ if ((opcode & 0x000000090) == 0x00000080) { int x = (opcode & 0x20) >> 5; int y = (opcode & 0x40) >> 6; /* SMLA < x> */ if ((opcode & 0x00600000) == 0x00000000) { uint8_t Rd, Rm, Rs, Rn; instruction->type = ARM_SMLAxy; Rd = (opcode & 0xf0000) >> 16; Rm = (opcode & 0xf); Rs = (opcode & 0xf00) >> 8; Rn = (opcode & 0xf000) >> 12; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tSMLA%s%s%s r%i, r%i, r%i, r%i", address, opcode, (x) ? "T" : "B", (y) ? "T" : "B", COND(opcode), Rd, Rm, Rs, Rn); } /* SMLAL < x> */ if ((opcode & 0x00600000) == 0x00400000) { uint8_t RdLow, RdHi, Rm, Rs; instruction->type = ARM_SMLAxy; RdHi = (opcode & 0xf0000) >> 16; RdLow = (opcode & 0xf000) >> 12; Rm = (opcode & 0xf); Rs = (opcode & 0xf00) >> 8; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tSMLA%s%s%s r%i, r%i, r%i, r%i", address, opcode, (x) ? "T" : "B", (y) ? "T" : "B", COND(opcode), RdLow, RdHi, Rm, Rs); } /* SMLAW < y> */ if (((opcode & 0x00600000) == 0x00100000) && (x == 0)) { uint8_t Rd, Rm, Rs, Rn; instruction->type = ARM_SMLAWy; Rd = (opcode & 0xf0000) >> 16; Rm = (opcode & 0xf); Rs = (opcode & 0xf00) >> 8; Rn = (opcode & 0xf000) >> 12; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tSMLAW%s%s r%i, r%i, r%i, r%i", address, opcode, (y) ? "T" : "B", COND(opcode), Rd, Rm, Rs, Rn); } /* SMUL < x> */ if ((opcode & 0x00600000) == 0x00300000) { uint8_t Rd, Rm, Rs; instruction->type = ARM_SMULxy; Rd = (opcode & 0xf0000) >> 16; Rm = (opcode & 0xf); Rs = (opcode & 0xf00) >> 8; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tSMULW%s%s%s r%i, r%i, r%i", address, opcode, (x) ? "T" : "B", (y) ? "T" : "B", COND(opcode), Rd, Rm, Rs); } /* SMULW < y> */ if (((opcode & 0x00600000) == 0x00100000) && (x == 1)) { uint8_t Rd, Rm, Rs; instruction->type = ARM_SMULWy; Rd = (opcode & 0xf0000) >> 16; Rm = (opcode & 0xf); Rs = (opcode & 0xf00) >> 8; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tSMULW%s%s r%i, r%i, r%i", address, opcode, (y) ? "T" : "B", COND(opcode), Rd, Rm, Rs); } } return ERROR_OK; } static int evaluate_data_proc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction) { uint8_t I, op, S, Rn, Rd; char *mnemonic = NULL; char shifter_operand[32]; I = (opcode & 0x02000000) >> 25; op = (opcode & 0x01e00000) >> 21; S = (opcode & 0x00100000) >> 20; Rd = (opcode & 0xf000) >> 12; Rn = (opcode & 0xf0000) >> 16; instruction->info.data_proc.Rd = Rd; instruction->info.data_proc.Rn = Rn; instruction->info.data_proc.S = S; switch (op) { case 0x0: instruction->type = ARM_AND; mnemonic = "AND"; break; case 0x1: instruction->type = ARM_EOR; mnemonic = "EOR"; break; case 0x2: instruction->type = ARM_SUB; mnemonic = "SUB"; break; case 0x3: instruction->type = ARM_RSB; mnemonic = "RSB"; break; case 0x4: instruction->type = ARM_ADD; mnemonic = "ADD"; break; case 0x5: instruction->type = ARM_ADC; mnemonic = "ADC"; break; case 0x6: instruction->type = ARM_SBC; mnemonic = "SBC"; break; case 0x7: instruction->type = ARM_RSC; mnemonic = "RSC"; break; case 0x8: instruction->type = ARM_TST; mnemonic = "TST"; break; case 0x9: instruction->type = ARM_TEQ; mnemonic = "TEQ"; 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 = "ORR"; break; case 0xd: instruction->type = ARM_MOV; mnemonic = "MOV"; break; case 0xe: instruction->type = ARM_BIC; mnemonic = "BIC"; break; case 0xf: instruction->type = ARM_MVN; mnemonic = "MVN"; break; } if (I) /* immediate shifter operand (#)*/ { uint8_t immed_8 = opcode & 0xff; uint8_t rotate_imm = (opcode & 0xf00) >> 8; uint32_t immediate; immediate = ror(immed_8, rotate_imm * 2); snprintf(shifter_operand, 32, "#0x%" PRIx32 "", immediate); instruction->info.data_proc.variant = 0; instruction->info.data_proc.shifter_operand.immediate.immediate = immediate; } else /* register-based shifter operand */ { uint8_t shift, Rm; shift = (opcode & 0x60) >> 5; Rm = (opcode & 0xf); if ((opcode & 0x10) != 0x10) /* Immediate shifts ("" or ", #") */ { uint8_t shift_imm; shift_imm = (opcode & 0xf80) >> 7; instruction->info.data_proc.variant = 1; instruction->info.data_proc.shifter_operand.immediate_shift.Rm = Rm; 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); } else { if (shift == 0x0) /* LSL */ { snprintf(shifter_operand, 32, "r%i, LSL #0x%x", Rm, shift_imm); } else if (shift == 0x1) /* LSR */ { snprintf(shifter_operand, 32, "r%i, LSR #0x%x", Rm, shift_imm); } else if (shift == 0x2) /* ASR */ { snprintf(shifter_operand, 32, "r%i, ASR #0x%x", Rm, shift_imm); } else if (shift == 0x3) /* ROR */ { 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 (", ") */ { uint8_t Rs = (opcode & 0xf00) >> 8; instruction->info.data_proc.variant = 2; instruction->info.data_proc.shifter_operand.register_shift.Rm = Rm; instruction->info.data_proc.shifter_operand.register_shift.Rs = Rs; instruction->info.data_proc.shifter_operand.register_shift.shift = shift; if (shift == 0x0) /* LSL */ { snprintf(shifter_operand, 32, "r%i, LSL r%i", Rm, Rs); } else if (shift == 0x1) /* LSR */ { snprintf(shifter_operand, 32, "r%i, LSR r%i", Rm, Rs); } else if (shift == 0x2) /* ASR */ { snprintf(shifter_operand, 32, "r%i, ASR r%i", Rm, Rs); } else if (shift == 0x3) /* ROR */ { snprintf(shifter_operand, 32, "r%i, ROR r%i", Rm, Rs); } } } if ((op < 0x8) || (op == 0xc) || (op == 0xe)) /* {}{S} , , */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, r%i, %s", address, opcode, mnemonic, COND(opcode), (S) ? "S" : "", Rd, Rn, shifter_operand); } else if ((op == 0xd) || (op == 0xf)) /* {}{S} , */ { if (opcode == 0xe1a00000) /* print MOV r0,r0 as NOP */ snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tNOP",address, opcode); else snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s%s r%i, %s", address, opcode, mnemonic, COND(opcode), (S) ? "S" : "", Rd, shifter_operand); } else /* {} , */ { snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\t%s%s r%i, %s", address, opcode, mnemonic, COND(opcode), Rn, shifter_operand); } return ERROR_OK; } 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)); instruction->opcode = opcode; instruction->instruction_size = 4; /* catch opcodes with condition field [31:28] = b1111 */ if ((opcode & 0xf0000000) == 0xf0000000) { /* Undefined instruction (or ARMv5E cache preload PLD) */ if ((opcode & 0x08000000) == 0x00000000) return evaluate_pld(opcode, address, instruction); /* Undefined instruction */ if ((opcode & 0x0e000000) == 0x08000000) { instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tUNDEFINED INSTRUCTION", address, opcode); return ERROR_OK; } /* Branch and branch with link and change to Thumb */ if ((opcode & 0x0e000000) == 0x0a000000) return evaluate_blx_imm(opcode, address, instruction); /* Extended coprocessor opcode space (ARMv5 and higher)*/ /* Coprocessor load/store and double register transfers */ if ((opcode & 0x0e000000) == 0x0c000000) return evaluate_ldc_stc_mcrr_mrrc(opcode, address, instruction); /* Coprocessor data processing */ if ((opcode & 0x0f000100) == 0x0c000000) return evaluate_cdp_mcr_mrc(opcode, address, instruction); /* Coprocessor register transfers */ if ((opcode & 0x0f000010) == 0x0c000010) return evaluate_cdp_mcr_mrc(opcode, address, instruction); /* Undefined instruction */ if ((opcode & 0x0f000000) == 0x0f000000) { instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tUNDEFINED INSTRUCTION", address, opcode); return ERROR_OK; } } /* catch opcodes with [27:25] = b000 */ if ((opcode & 0x0e000000) == 0x00000000) { /* Multiplies, extra load/stores */ if ((opcode & 0x00000090) == 0x00000090) return evaluate_mul_and_extra_ld_st(opcode, address, instruction); /* Miscellaneous instructions */ if ((opcode & 0x0f900000) == 0x01000000) return evaluate_misc_instr(opcode, address, instruction); return evaluate_data_proc(opcode, address, instruction); } /* catch opcodes with [27:25] = b001 */ if ((opcode & 0x0e000000) == 0x02000000) { /* Undefined instruction */ if ((opcode & 0x0fb00000) == 0x03000000) { instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tUNDEFINED INSTRUCTION", address, opcode); return ERROR_OK; } /* Move immediate to status register */ if ((opcode & 0x0fb00000) == 0x03200000) return evaluate_mrs_msr(opcode, address, instruction); return evaluate_data_proc(opcode, address, instruction); } /* catch opcodes with [27:25] = b010 */ if ((opcode & 0x0e000000) == 0x04000000) { /* Load/store immediate offset */ return evaluate_load_store(opcode, address, instruction); } /* catch opcodes with [27:25] = b011 */ if ((opcode & 0x0e000000) == 0x06000000) { /* Load/store register offset */ if ((opcode & 0x00000010) == 0x00000000) return evaluate_load_store(opcode, address, instruction); /* Architecturally Undefined instruction * ... don't expect these to ever be used */ if ((opcode & 0x07f000f0) == 0x07f000f0) { instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 "\t0x%8.8" PRIx32 "\tUNDEF", address, opcode); return ERROR_OK; } /* "media" instructions */ return evaluate_media(opcode, address, instruction); } /* catch opcodes with [27:25] = b100 */ if ((opcode & 0x0e000000) == 0x08000000) { /* Load/store multiple */ return evaluate_ldm_stm(opcode, address, instruction); } /* catch opcodes with [27:25] = b101 */ if ((opcode & 0x0e000000) == 0x0a000000) { /* Branch and branch with link */ return evaluate_b_bl(opcode, address, instruction); } /* catch opcodes with [27:25] = b110 */ if ((opcode & 0x0e000000) == 0x0a000000) { /* Coprocessor load/store and double register transfers */ return evaluate_ldc_stc_mcrr_mrrc(opcode, address, instruction); } /* catch opcodes with [27:25] = b111 */ if ((opcode & 0x0e000000) == 0x0e000000) { /* Software interrupt */ if ((opcode & 0x0f000000) == 0x0f000000) return evaluate_swi(opcode, address, instruction); /* Coprocessor data processing */ if ((opcode & 0x0f000010) == 0x0e000000) return evaluate_cdp_mcr_mrc(opcode, address, instruction); /* Coprocessor register transfers */ if ((opcode & 0x0f000010) == 0x0e000010) return evaluate_cdp_mcr_mrc(opcode, address, instruction); } LOG_ERROR("should never reach this point"); return -1; } static 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"; target_address &= 0xfffffffc; 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: deal correctly with dual opcode (prefixed) BL/BLX; * these are effectively 32-bit instructions even in Thumb1. * Might be simplest to always use the Thumb2 decoder. */ snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \t%s\t%#8.8" PRIx32, 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; } static 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 { /* REVISIT: if reg_imm == 0, display as "MOVS" */ 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%8.8" PRIx32 " 0x%4.4x \t%s\tr%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%8.8" PRIx32 " 0x%4.4x \t%s\tr%i, r%i, r%i", address, opcode, mnemonic, Rd, Rn, Rm_imm); } return ERROR_OK; } static 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%8.8" PRIx32 " 0x%4.4x \t%s\tr%i, r%i, #%#2.2x" , address, opcode, mnemonic, Rd, Rm, imm); return ERROR_OK; } static 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%8.8" PRIx32 " 0x%4.4x \t%s\tr%i, #%#2.2x", address, opcode, mnemonic, Rd, imm); return ERROR_OK; } static 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; bool nop = false; 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"; if (Rd == Rm) nop = true; 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%8.8" PRIx32 " 0x%4.4x \tBLX\tr%i", address, opcode, Rm); } else { instruction->type = ARM_BX; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tBX\tr%i", address, opcode, Rm); } } else { instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \t" "UNDEFINED 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 = "RSBS"; 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; } } if (nop) snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tNOP\t\t\t" "; (%s r%i, r%i)", address, opcode, mnemonic, Rd, Rm); else snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \t%s\tr%i, r%i", address, opcode, mnemonic, Rd, Rm); return ERROR_OK; } /* PC-relative data addressing is word-aligned even with Thumb */ static inline uint32_t thumb_alignpc4(uint32_t addr) { return (addr + 4) & ~3; } static 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; 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; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \t" "LDR\tr%i, [pc, #%#" PRIx32 "]\t; %#8.8" PRIx32, address, opcode, Rd, immediate, thumb_alignpc4(address) + immediate); return ERROR_OK; } static 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%8.8" PRIx32 " 0x%4.4x \t%s\tr%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; } static 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%8.8" PRIx32 " 0x%4.4x \t%s%c\tr%i, [r%i, #%#" PRIx32 "]", 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; } static 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%8.8" PRIx32 " 0x%4.4x \t%s\tr%i, [SP, #%#" PRIx32 "]", 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; } static 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%8.8" PRIx32 " 0x%4.4x \tADD\tr%i, %s, #%#" PRIx32, 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; } static 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%8.8" PRIx32 " 0x%4.4x \t%s\tSP, #%#" PRIx32, 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; } static 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%8.8" PRIx32 " 0x%4.4x \tBKPT\t%#2.2" PRIx32 "", address, opcode, imm); return ERROR_OK; } static 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; /* REVISIT: in ThumbEE mode, there are no LDM or STM instructions. * The STMIA and LDMIA opcodes are used for other instructions. */ if ((opcode & 0xf000) == 0xc000) { /* generic load/store multiple */ char *wback = "!"; if (L) { instruction->type = ARM_LDM; mnemonic = "LDM"; if (opcode & (1 << Rn)) wback = ""; } else { instruction->type = ARM_STM; mnemonic = "STM"; } snprintf(ptr_name, sizeof ptr_name, "r%i%s, ", Rn, wback); } 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%8.8" PRIx32 " 0x%4.4x \t%s\t%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; } static 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%8.8" PRIx32 " 0x%4.4x \tSVC\t%#2.2" PRIx32, address, opcode, offset); return ERROR_OK; } else if (cond == 0xe) { instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%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%8.8" PRIx32 " 0x%4.4x \tB%s\t%#8.8" PRIx32, 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; } static int evaluate_cb_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction) { unsigned offset; /* added in Thumb2 */ offset = (opcode >> 3) & 0x1f; offset |= (opcode & 0x0200) >> 4; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tCB%sZ\tr%d, %#8.8" PRIx32, address, opcode, (opcode & 0x0800) ? "N" : "", opcode & 0x7, address + 4 + (offset << 1)); return ERROR_OK; } static int evaluate_extend_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction) { /* added in ARMv6 */ snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \t%cXT%c\tr%d, r%d", address, opcode, (opcode & 0x0080) ? 'U' : 'S', (opcode & 0x0040) ? 'B' : 'H', opcode & 0x7, (opcode >> 3) & 0x7); return ERROR_OK; } static int evaluate_cps_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction) { /* added in ARMv6 */ if ((opcode & 0x0ff0) == 0x0650) snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tSETEND %s", address, opcode, (opcode & 0x80) ? "BE" : "LE"); else /* ASSUME (opcode & 0x0fe0) == 0x0660 */ snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tCPSI%c\t%s%s%s", address, opcode, (opcode & 0x0010) ? 'D' : 'E', (opcode & 0x0004) ? "A" : "", (opcode & 0x0002) ? "I" : "", (opcode & 0x0001) ? "F" : ""); return ERROR_OK; } static int evaluate_byterev_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction) { char *suffix; /* added in ARMv6 */ switch ((opcode >> 6) & 3) { case 0: suffix = ""; break; case 1: suffix = "16"; break; default: suffix = "SH"; break; } snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tREV%s\tr%d, r%d", address, opcode, suffix, opcode & 0x7, (opcode >> 3) & 0x7); return ERROR_OK; } static int evaluate_hint_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction) { char *hint; switch ((opcode >> 4) & 0x0f) { case 0: hint = "NOP"; break; case 1: hint = "YIELD"; break; case 2: hint = "WFE"; break; case 3: hint = "WFI"; break; case 4: hint = "SEV"; break; default: hint = "HINT (UNRECOGNIZED)"; break; } snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \t%s", address, opcode, hint); return ERROR_OK; } static int evaluate_ifthen_thumb(uint16_t opcode, uint32_t address, arm_instruction_t *instruction) { unsigned cond = (opcode >> 4) & 0x0f; char *x = "", *y = "", *z = ""; if (opcode & 0x01) z = (opcode & 0x02) ? "T" : "E"; if (opcode & 0x03) y = (opcode & 0x04) ? "T" : "E"; if (opcode & 0x07) x = (opcode & 0x08) ? "T" : "E"; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%4.4x \tIT%s%s%s\t%s", address, opcode, x, y, z, arm_condition_strings[cond]); /* NOTE: strictly speaking, the next 1-4 instructions should * now be displayed with the relevant conditional suffix... */ 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; instruction->instruction_size = 2; 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) { switch ((opcode >> 8) & 0x0f) { case 0x0: return evaluate_adjust_stack_thumb(opcode, address, instruction); case 0x1: case 0x3: case 0x9: case 0xb: return evaluate_cb_thumb(opcode, address, instruction); case 0x2: return evaluate_extend_thumb(opcode, address, instruction); case 0x4: case 0x5: case 0xc: case 0xd: return evaluate_load_store_multiple_thumb(opcode, address, instruction); case 0x6: return evaluate_cps_thumb(opcode, address, instruction); case 0xa: if ((opcode & 0x00c0) == 0x0080) break; return evaluate_byterev_thumb(opcode, address, instruction); case 0xe: return evaluate_breakpoint_thumb(opcode, address, instruction); case 0xf: if (opcode & 0x000f) return evaluate_ifthen_thumb(opcode, address, instruction); else return evaluate_hint_thumb(opcode, address, instruction); } instruction->type = ARM_UNDEFINED_INSTRUCTION; snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%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%8.8" PRIx32 " 0x%8.8x\t" "UNDEFINED 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; } static int t2ev_b_bl(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { unsigned offset; unsigned b21 = 1 << 21; unsigned b22 = 1 << 22; /* instead of combining two smaller 16-bit branch instructions, * Thumb2 uses only one larger 32-bit instruction. */ offset = opcode & 0x7ff; offset |= (opcode & 0x03ff0000) >> 5; if (opcode & (1 << 26)) { offset |= 0xff << 23; if ((opcode & (1 << 11)) == 0) b21 = 0; if ((opcode & (1 << 13)) == 0) b22 = 0; } else { if (opcode & (1 << 11)) b21 = 0; if (opcode & (1 << 13)) b22 = 0; } offset |= b21; offset |= b22; address += 4; address += offset << 1; instruction->type = (opcode & (1 << 14)) ? ARM_BL : ARM_B; instruction->info.b_bl_bx_blx.reg_operand = -1; instruction->info.b_bl_bx_blx.target_address = address; sprintf(cp, "%s\t%#8.8" PRIx32, (opcode & (1 << 14)) ? "BL" : "B.W", address); return ERROR_OK; } static int t2ev_cond_b(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { unsigned offset; unsigned b17 = 1 << 17; unsigned b18 = 1 << 18; unsigned cond = (opcode >> 22) & 0x0f; offset = opcode & 0x7ff; offset |= (opcode & 0x003f0000) >> 5; if (opcode & (1 << 26)) { offset |= 0xffff << 19; if ((opcode & (1 << 11)) == 0) b17 = 0; if ((opcode & (1 << 13)) == 0) b18 = 0; } else { if (opcode & (1 << 11)) b17 = 0; if (opcode & (1 << 13)) b18 = 0; } offset |= b17; offset |= b18; address += 4; address += offset << 1; instruction->type = ARM_B; instruction->info.b_bl_bx_blx.reg_operand = -1; instruction->info.b_bl_bx_blx.target_address = address; sprintf(cp, "B%s.W\t%#8.8" PRIx32, arm_condition_strings[cond], address); return ERROR_OK; } static const char *special_name(int number) { char *special = "(RESERVED)"; switch (number) { case 0: special = "apsr"; break; case 1: special = "iapsr"; break; case 2: special = "eapsr"; break; case 3: special = "xpsr"; break; case 5: special = "ipsr"; break; case 6: special = "epsr"; break; case 7: special = "iepsr"; break; case 8: special = "msp"; break; case 9: special = "psp"; break; case 16: special = "primask"; break; case 17: special = "basepri"; break; case 18: special = "basepri_max"; break; case 19: special = "faultmask"; break; case 20: special = "control"; break; } return special; } static int t2ev_hint(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { const char *mnemonic; if (opcode & 0x0700) { instruction->type = ARM_UNDEFINED_INSTRUCTION; strcpy(cp, "UNDEFINED"); return ERROR_OK; } if (opcode & 0x00f0) { sprintf(cp, "DBG\t#%d", (int) opcode & 0xf); return ERROR_OK; } switch (opcode & 0x0f) { case 0: mnemonic = "NOP.W"; break; case 1: mnemonic = "YIELD.W"; break; case 2: mnemonic = "WFE.W"; break; case 3: mnemonic = "WFI.W"; break; case 4: mnemonic = "SEV.W"; break; default: mnemonic = "HINT.W (UNRECOGNIZED)"; break; } strcpy(cp, mnemonic); return ERROR_OK; } static int t2ev_misc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { const char *mnemonic; switch ((opcode >> 4) & 0x0f) { case 0: mnemonic = "LEAVEX"; break; case 1: mnemonic = "ENTERX"; break; case 2: mnemonic = "CLREX"; break; case 4: mnemonic = "DSB"; break; case 5: mnemonic = "DMB"; break; case 6: mnemonic = "ISB"; break; default: return ERROR_INVALID_ARGUMENTS; } strcpy(cp, mnemonic); return ERROR_OK; } static int t2ev_b_misc(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { /* permanently undefined */ if ((opcode & 0x07f07000) == 0x07f02000) { instruction->type = ARM_UNDEFINED_INSTRUCTION; strcpy(cp, "UNDEFINED"); return ERROR_OK; } switch ((opcode >> 12) & 0x5) { case 0x1: case 0x5: return t2ev_b_bl(opcode, address, instruction, cp); case 0x4: goto undef; case 0: if (((opcode >> 23) & 0x07) != 0x07) return t2ev_cond_b(opcode, address, instruction, cp); if (opcode & (1 << 26)) goto undef; break; } switch ((opcode >> 20) & 0x7f) { case 0x38: case 0x39: sprintf(cp, "MSR\t%s, r%d", special_name(opcode & 0xff), (int) (opcode >> 16) & 0x0f); return ERROR_OK; case 0x3a: return t2ev_hint(opcode, address, instruction, cp); case 0x3b: return t2ev_misc(opcode, address, instruction, cp); case 0x3c: sprintf(cp, "BXJ\tr%d", (int) (opcode >> 16) & 0x0f); return ERROR_OK; case 0x3e: case 0x3f: sprintf(cp, "MRS\tr%d, %s", (int) (opcode >> 8) & 0x0f, special_name(opcode & 0xff)); return ERROR_OK; } undef: return ERROR_INVALID_ARGUMENTS; } static int t2ev_data_mod_immed(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { char *mnemonic = NULL; int rn = (opcode >> 16) & 0xf; int rd = (opcode >> 8) & 0xf; unsigned immed = opcode & 0xff; unsigned func; bool one = false; char *suffix = ""; char *suffix2 = ""; /* ARMv7-M: A5.3.2 Modified immediate constants */ func = (opcode >> 11) & 0x0e; if (immed & 0x80) func |= 1; if (opcode & (1 << 26)) func |= 0x10; /* "Modified" immediates */ switch (func >> 1) { case 0: break; case 2: immed <<= 8; /* FALLTHROUGH */ case 1: immed += immed << 16; break; case 3: immed += immed << 8; immed += immed << 16; break; default: immed |= 0x80; immed = ror(immed, func); } if (opcode & (1 << 20)) suffix = "S"; switch ((opcode >> 21) & 0xf) { case 0: if (rd == 0xf) { instruction->type = ARM_TST; mnemonic = "TST"; one = true; suffix = ""; rd = rn; } else { instruction->type = ARM_AND; mnemonic = "AND"; } break; case 1: instruction->type = ARM_BIC; mnemonic = "BIC"; break; case 2: if (rn == 0xf) { instruction->type = ARM_MOV; mnemonic = "MOV"; one = true; suffix2 = ".W"; } else { instruction->type = ARM_ORR; mnemonic = "ORR"; } break; case 3: if (rn == 0xf) { instruction->type = ARM_MVN; mnemonic = "MVN"; one = true; } else { // instruction->type = ARM_ORN; mnemonic = "ORN"; } break; case 4: if (rd == 0xf) { instruction->type = ARM_TEQ; mnemonic = "TEQ"; one = true; suffix = ""; rd = rn; } else { instruction->type = ARM_EOR; mnemonic = "EOR"; } break; case 8: if (rd == 0xf) { instruction->type = ARM_CMN; mnemonic = "CMN"; one = true; suffix = ""; rd = rn; } else { instruction->type = ARM_ADD; mnemonic = "ADD"; suffix2 = ".W"; } break; case 10: instruction->type = ARM_ADC; mnemonic = "ADC"; suffix2 = ".W"; break; case 11: instruction->type = ARM_SBC; mnemonic = "SBC"; break; case 13: if (rd == 0xf) { instruction->type = ARM_CMP; mnemonic = "CMP"; one = true; suffix = ""; rd = rn; } else { instruction->type = ARM_SUB; mnemonic = "SUB"; } suffix2 = ".W"; break; case 14: instruction->type = ARM_RSB; mnemonic = "RSB"; suffix2 = ".W"; break; default: return ERROR_INVALID_ARGUMENTS; } if (one) sprintf(cp, "%s%s\tr%d, #%d\t; %#8.8x", mnemonic, suffix2 ,rd, immed, immed); else sprintf(cp, "%s%s%s\tr%d, r%d, #%d\t; %#8.8x", mnemonic, suffix, suffix2, rd, rn, immed, immed); return ERROR_OK; } static int t2ev_data_immed(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { char *mnemonic = NULL; int rn = (opcode >> 16) & 0xf; int rd = (opcode >> 8) & 0xf; unsigned immed; bool add = false; bool is_signed = false; immed = (opcode & 0x0ff) | ((opcode & 0x7000) >> 4); if (opcode & (1 << 26)) immed |= (1 << 11); switch ((opcode >> 20) & 0x1f) { case 0: if (rn == 0xf) { add = true; goto do_adr; } mnemonic = "ADDW"; break; case 4: immed |= (opcode >> 4) & 0xf000; sprintf(cp, "MOVW\tr%d, #%d\t; %#3.3x", rd, immed, immed); return ERROR_OK; case 0x0a: if (rn == 0xf) goto do_adr; mnemonic = "SUBW"; break; case 0x0c: /* move constant to top 16 bits of register */ immed |= (opcode >> 4) & 0xf000; sprintf(cp, "MOVT\tr%d, #%d\t; %#4.4x", rn, immed, immed); return ERROR_OK; case 0x10: case 0x12: is_signed = true; case 0x18: case 0x1a: /* signed/unsigned saturated add */ immed = (opcode >> 6) & 0x03; immed |= (opcode >> 10) & 0x1c; sprintf(cp, "%sSAT\tr%d, #%d, r%d, %s #%d\t", is_signed ? "S" : "U", rd, (int) (opcode & 0x1f) + is_signed, rn, (opcode & (1 << 21)) ? "ASR" : "LSL", immed ? immed : 32); return ERROR_OK; case 0x14: is_signed = true; /* FALLTHROUGH */ case 0x1c: /* signed/unsigned bitfield extract */ immed = (opcode >> 6) & 0x03; immed |= (opcode >> 10) & 0x1c; sprintf(cp, "%sBFX\tr%d, r%d, #%d, #%d\t", is_signed ? "S" : "U", rd, rn, immed, (int) (opcode & 0x1f) + 1); return ERROR_OK; case 0x16: immed = (opcode >> 6) & 0x03; immed |= (opcode >> 10) & 0x1c; if (rn == 0xf) /* bitfield clear */ sprintf(cp, "BFC\tr%d, #%d, #%d\t", rd, immed, (int) (opcode & 0x1f) + 1 - immed); else /* bitfield insert */ sprintf(cp, "BFI\tr%d, r%d, #%d, #%d\t", rd, rn, immed, (int) (opcode & 0x1f) + 1 - immed); return ERROR_OK; default: return ERROR_INVALID_ARGUMENTS; } sprintf(cp, "%s\tr%d, r%d, #%d\t; %#3.3x", mnemonic, rd, rn, immed, immed); return ERROR_OK; do_adr: address = thumb_alignpc4(address); if (add) address += immed; else address -= immed; /* REVISIT "ADD/SUB Rd, PC, #const ; 0x..." might be better; * not hiding the pc-relative stuff will sometimes be useful. */ sprintf(cp, "ADR.W\tr%d, %#8.8" PRIx32, rd, address); return ERROR_OK; } static int t2ev_store_single(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { unsigned op = (opcode >> 20) & 0xf; char *size = ""; char *suffix = ""; char *p1 = ""; char *p2 = "]"; unsigned immed; unsigned rn = (opcode >> 16) & 0x0f; unsigned rt = (opcode >> 12) & 0x0f; if (rn == 0xf) return ERROR_INVALID_ARGUMENTS; if (opcode & 0x0800) op |= 1; switch (op) { /* byte */ case 0x8: case 0x9: size = "B"; goto imm12; case 0x1: size = "B"; goto imm8; case 0x0: size = "B"; break; /* halfword */ case 0xa: case 0xb: size = "H"; goto imm12; case 0x3: size = "H"; goto imm8; case 0x2: size = "H"; break; /* word */ case 0xc: case 0xd: goto imm12; case 0x5: goto imm8; case 0x4: break; /* error */ default: return ERROR_INVALID_ARGUMENTS; } sprintf(cp, "STR%s.W\tr%d, [r%d, r%d, LSL #%d]", size, rt, rn, (int) opcode & 0x0f, (int) (opcode >> 4) & 0x03); return ERROR_OK; imm12: immed = opcode & 0x0fff; sprintf(cp, "STR%s.W\tr%d, [r%d, #%u]\t; %#3.3x", size, rt, rn, immed, immed); return ERROR_OK; imm8: immed = opcode & 0x00ff; switch (opcode & 0x700) { case 0x600: suffix = "T"; break; case 0x000: case 0x200: return ERROR_INVALID_ARGUMENTS; } /* two indexed modes will write back rn */ if (opcode & 0x100) { if (opcode & 0x400) /* pre-indexed */ p2 = "]!"; else { /* post-indexed */ p1 = "]"; p2 = ""; } } sprintf(cp, "STR%s%s\tr%d, [r%d%s, #%s%u%s\t; %#2.2x", size, suffix, rt, rn, p1, (opcode & 0x200) ? "" : "-", immed, p2, immed); return ERROR_OK; } static int t2ev_mul32(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int ra = (opcode >> 12) & 0xf; switch (opcode & 0x007000f0) { case 0: if (ra == 0xf) sprintf(cp, "MUL\tr%d, r%d, r%d", (int) (opcode >> 8) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); else sprintf(cp, "MLA\tr%d, r%d, r%d, r%d", (int) (opcode >> 8) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, ra); break; case 0x10: sprintf(cp, "MLS\tr%d, r%d, r%d, r%d", (int) (opcode >> 8) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf, ra); break; default: return ERROR_INVALID_ARGUMENTS; } return ERROR_OK; } static int t2ev_mul64_div(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int op = (opcode >> 4) & 0xf; char *infix = "MUL"; op += (opcode >> 16) & 0x70; switch (op) { case 0x40: case 0x60: infix = "MLA"; /* FALLTHROUGH */ case 0: case 0x20: sprintf(cp, "%c%sL\tr%d, r%d, r%d, r%d", (op & 0x20) ? 'U' : 'S', infix, (int) (opcode >> 12) & 0xf, (int) (opcode >> 8) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); break; case 0x1f: case 0x3f: sprintf(cp, "%cDIV\tr%d, r%d, r%d", (op & 0x20) ? 'U' : 'S', (int) (opcode >> 8) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); break; default: return ERROR_INVALID_ARGUMENTS; } return ERROR_OK; } static int t2ev_ldm_stm(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int rn = (opcode >> 16) & 0xf; int op = (opcode >> 22) & 0x6; int t = (opcode >> 21) & 1; unsigned registers = opcode & 0xffff; if (opcode & (1 << 20)) op |= 1; switch (op) { case 2: sprintf(cp, "STM.W\tr%d%s, ", rn, t ? "!" : ""); break; case 3: if (rn == 13 && t) sprintf(cp, "POP.W\t"); else sprintf(cp, "LDM.W\tr%d%s, ", rn, t ? "!" : ""); break; case 4: if (rn == 13 && t) sprintf(cp, "PUSH.W\t"); else sprintf(cp, "STMDB\tr%d%s, ", rn, t ? "!" : ""); break; case 5: sprintf(cp, "LDMDB.W\tr%d%s, ", rn, t ? "!" : ""); break; default: return ERROR_INVALID_ARGUMENTS; } cp = strchr(cp, 0); *cp++ = '{'; for (t = 0; registers; t++, registers >>= 1) { if ((registers & 1) == 0) continue; registers &= ~1; sprintf(cp, "r%d%s", t, registers ? ", " : ""); cp = strchr(cp, 0); } *cp++ = '}'; *cp++ = 0; return ERROR_OK; } /* load/store dual or exclusive, table branch */ static int t2ev_ldrex_strex(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { unsigned op1op2 = (opcode >> 20) & 0x3; unsigned op3 = (opcode >> 4) & 0xf; char *mnemonic; unsigned rn = (opcode >> 16) & 0xf; unsigned rt = (opcode >> 12) & 0xf; unsigned rd = (opcode >> 8) & 0xf; unsigned imm = opcode & 0xff; char *p1 = ""; char *p2 = "]"; op1op2 |= (opcode >> 21) & 0xc; switch (op1op2) { case 0: mnemonic = "STREX"; goto strex; case 1: mnemonic = "LDREX"; goto ldrex; case 2: case 6: case 8: case 10: case 12: case 14: mnemonic = "STRD"; goto immediate; case 3: case 7: case 9: case 11: case 13: case 15: mnemonic = "LDRD"; if (rn == 15) goto literal; else goto immediate; case 4: switch (op3) { case 4: mnemonic = "STREXB"; break; case 5: mnemonic = "STREXH"; break; default: return ERROR_INVALID_ARGUMENTS; } rd = opcode & 0xf; imm = 0; goto strex; case 5: switch (op3) { case 0: sprintf(cp, "TBB\t[r%u, r%u]", rn, imm & 0xf); return ERROR_OK; case 1: sprintf(cp, "TBH\t[r%u, r%u, LSL #1]", rn, imm & 0xf); return ERROR_OK; case 4: mnemonic = "LDREXB"; break; case 5: mnemonic = "LDREXH"; break; default: return ERROR_INVALID_ARGUMENTS; } imm = 0; goto ldrex; } return ERROR_INVALID_ARGUMENTS; strex: imm <<= 2; if (imm) sprintf(cp, "%s\tr%u, r%u, [r%u, #%u]\t; %#2.2x", mnemonic, rd, rt, rn, imm, imm); else sprintf(cp, "%s\tr%u, r%u, [r%u]", mnemonic, rd, rt, rn); return ERROR_OK; ldrex: imm <<= 2; if (imm) sprintf(cp, "%s\tr%u, [r%u, #%u]\t; %#2.2x", mnemonic, rt, rn, imm, imm); else sprintf(cp, "%s\tr%u, [r%u]", mnemonic, rt, rn); return ERROR_OK; immediate: /* two indexed modes will write back rn */ if (opcode & (1 << 21)) { if (opcode & (1 << 24)) /* pre-indexed */ p2 = "]!"; else { /* post-indexed */ p1 = "]"; p2 = ""; } } imm <<= 2; sprintf(cp, "%s\tr%u, r%u, [r%u%s, #%s%u%s\t; %#2.2x", mnemonic, rt, rd, rn, p1, (opcode & (1 << 23)) ? "" : "-", imm, p2, imm); return ERROR_OK; literal: address = thumb_alignpc4(address); imm <<= 2; if (opcode & (1 << 23)) address += imm; else address -= imm; sprintf(cp, "%s\tr%u, r%u, %#8.8" PRIx32, mnemonic, rt, rd, address); return ERROR_OK; } static int t2ev_data_shift(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int op = (opcode >> 21) & 0xf; int rd = (opcode >> 8) & 0xf; int rn = (opcode >> 16) & 0xf; int type = (opcode >> 4) & 0x3; int immed = (opcode >> 6) & 0x3; char *mnemonic; char *suffix = ""; immed |= (opcode >> 10) & 0x1c; if (opcode & (1 << 20)) suffix = "S"; switch (op) { case 0: if (rd == 0xf) { if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_TST; mnemonic = "TST"; suffix = ""; goto two; } instruction->type = ARM_AND; mnemonic = "AND"; break; case 1: instruction->type = ARM_BIC; mnemonic = "BIC"; break; case 2: if (rn == 0xf) { instruction->type = ARM_MOV; switch (type) { case 0: if (immed == 0) { sprintf(cp, "MOV%s.W\tr%d, r%d", suffix, rd, (int) (opcode & 0xf)); return ERROR_OK; } mnemonic = "LSL"; break; case 1: mnemonic = "LSR"; break; case 2: mnemonic = "ASR"; break; default: if (immed == 0) { sprintf(cp, "RRX%s\tr%d, r%d", suffix, rd, (int) (opcode & 0xf)); return ERROR_OK; } mnemonic = "ROR"; break; } goto immediate; } else { instruction->type = ARM_ORR; mnemonic = "ORR"; } break; case 3: if (rn == 0xf) { instruction->type = ARM_MVN; mnemonic = "MVN"; rn = rd; goto two; } else { // instruction->type = ARM_ORN; mnemonic = "ORN"; } break; case 4: if (rd == 0xf) { if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_TEQ; mnemonic = "TEQ"; suffix = ""; goto two; } instruction->type = ARM_EOR; mnemonic = "EOR"; break; case 8: if (rd == 0xf) { if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_CMN; mnemonic = "CMN"; suffix = ""; goto two; } instruction->type = ARM_ADD; mnemonic = "ADD"; break; case 0xa: instruction->type = ARM_ADC; mnemonic = "ADC"; break; case 0xb: instruction->type = ARM_SBC; mnemonic = "SBC"; break; case 0xd: if (rd == 0xf) { if (!(opcode & (1 << 21))) return ERROR_INVALID_ARGUMENTS; instruction->type = ARM_CMP; mnemonic = "CMP"; suffix = ""; goto two; } instruction->type = ARM_SUB; mnemonic = "SUB"; break; case 0xe: instruction->type = ARM_RSB; mnemonic = "RSB"; break; default: return ERROR_INVALID_ARGUMENTS; } sprintf(cp, "%s%s.W\tr%d, r%d, r%d", mnemonic, suffix, rd, rn, (int) (opcode & 0xf)); shift: cp = strchr(cp, 0); switch (type) { case 0: if (immed == 0) return ERROR_OK; suffix = "LSL"; 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"); return ERROR_OK; } suffix = "ROR"; break; } sprintf(cp, ", %s #%d", suffix, immed ? immed : 32); return ERROR_OK; two: sprintf(cp, "%s%s.W\tr%d, r%d", mnemonic, suffix, rn, (int) (opcode & 0xf)); goto shift; immediate: sprintf(cp, "%s%s.W\tr%d, r%d, #%d", mnemonic, suffix, rd, (int) (opcode & 0xf), immed ? immed : 32); return ERROR_OK; } static int t2ev_data_reg(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { char *mnemonic; char * suffix = ""; if (((opcode >> 4) & 0xf) == 0) { switch ((opcode >> 21) & 0x7) { case 0: mnemonic = "LSL"; break; case 1: mnemonic = "LSR"; break; case 2: mnemonic = "ASR"; break; case 3: mnemonic = "ROR"; break; default: return ERROR_INVALID_ARGUMENTS; } instruction->type = ARM_MOV; if (opcode & (1 << 20)) suffix = "S"; sprintf(cp, "%s%s.W\tr%d, r%d, r%d", mnemonic, suffix, (int) (opcode >> 8) & 0xf, (int) (opcode >> 16) & 0xf, (int) (opcode >> 0) & 0xf); } else if (opcode & (1 << 7)) { switch ((opcode >> 20) & 0xf) { case 0: case 1: case 4: case 5: switch ((opcode >> 4) & 0x3) { case 1: suffix = ", ROR #8"; break; case 2: suffix = ", ROR #16"; break; case 3: suffix = ", ROR #24"; break; } sprintf(cp, "%cXT%c.W\tr%d, r%d%s", (opcode & (1 << 24)) ? 'U' : 'S', (opcode & (1 << 26)) ? 'B' : 'H', (int) (opcode >> 8) & 0xf, (int) (opcode >> 0) & 0xf, suffix); break; case 8: case 9: case 0xa: case 0xb: if (opcode & (1 << 6)) return ERROR_INVALID_ARGUMENTS; if (((opcode >> 12) & 0xf) != 0xf) return ERROR_INVALID_ARGUMENTS; if (!(opcode & (1 << 20))) return ERROR_INVALID_ARGUMENTS; switch (((opcode >> 19) & 0x04) | ((opcode >> 4) & 0x3)) { case 0: mnemonic = "REV.W"; break; case 1: mnemonic = "REV16.W"; break; case 2: mnemonic = "RBIT"; break; case 3: mnemonic = "REVSH.W"; break; case 4: mnemonic = "CLZ"; break; default: return ERROR_INVALID_ARGUMENTS; } sprintf(cp, "%s\tr%d, r%d", mnemonic, (int) (opcode >> 8) & 0xf, (int) (opcode >> 0) & 0xf); break; default: return ERROR_INVALID_ARGUMENTS; } } return ERROR_OK; } static int t2ev_load_word(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int rn = (opcode >> 16) & 0xf; int immed; instruction->type = ARM_LDR; if (rn == 0xf) { immed = opcode & 0x0fff; if ((opcode & (1 << 23)) == 0) immed = -immed; sprintf(cp, "LDR\tr%d, %#8.8" PRIx32, (int) (opcode >> 12) & 0xf, thumb_alignpc4(address) + immed); return ERROR_OK; } if (opcode & (1 << 23)) { immed = opcode & 0x0fff; sprintf(cp, "LDR.W\tr%d, [r%d, #%d]\t; %#3.3x", (int) (opcode >> 12) & 0xf, rn, immed, immed); return ERROR_OK; } if (!(opcode & (0x3f << 6))) { sprintf(cp, "LDR.W\tr%d, [r%d, r%d, LSL #%d]", (int) (opcode >> 12) & 0xf, rn, (int) (opcode >> 0) & 0xf, (int) (opcode >> 4) & 0x3); return ERROR_OK; } if (((opcode >> 8) & 0xf) == 0xe) { immed = opcode & 0x00ff; sprintf(cp, "LDRT\tr%d, [r%d, #%d]\t; %#2.2x", (int) (opcode >> 12) & 0xf, rn, immed, immed); return ERROR_OK; } if (((opcode >> 8) & 0xf) == 0xc || (opcode & 0x0900) == 0x0900) { char *p1 = "]", *p2 = ""; if (!(opcode & 0x0500)) return ERROR_INVALID_ARGUMENTS; immed = opcode & 0x00ff; /* two indexed modes will write back rn */ if (opcode & 0x100) { if (opcode & 0x400) /* pre-indexed */ p2 = "]!"; else { /* post-indexed */ p1 = "]"; p2 = ""; } } sprintf(cp, "LDR\tr%d, [r%d%s, #%s%u%s\t; %#2.2x", (int) (opcode >> 12) & 0xf, rn, p1, (opcode & 0x200) ? "" : "-", immed, p2, immed); return ERROR_OK; } return ERROR_INVALID_ARGUMENTS; } static int t2ev_load_byte_hints(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int rn = (opcode >> 16) & 0xf; int rt = (opcode >> 12) & 0xf; int op2 = (opcode >> 6) & 0x3f; unsigned immed; char *p1 = "", *p2 = "]"; char *mnemonic; switch ((opcode >> 23) & 0x3) { case 0: if ((rn & rt) == 0xf) { pld_literal: immed = opcode & 0xfff; address = thumb_alignpc4(address); if (opcode & (1 << 23)) address += immed; else address -= immed; sprintf(cp, "PLD\tr%d, %#8.8" PRIx32, rt, address); return ERROR_OK; } if (rn == 0x0f && rt != 0x0f) { ldrb_literal: immed = opcode & 0xfff; address = thumb_alignpc4(address); if (opcode & (1 << 23)) address += immed; else address -= immed; sprintf(cp, "LDRB\tr%d, %#8.8" PRIx32, rt, address); return ERROR_OK; } if (rn == 0x0f) break; if ((op2 & 0x3c) == 0x38) { immed = opcode & 0xff; sprintf(cp, "LDRBT\tr%d, [r%d, #%d]\t; %#2.2x", rt, rn, immed, immed); return ERROR_OK; } if ((op2 & 0x3c) == 0x30) { if (rt == 0x0f) { immed = opcode & 0xff; immed = -immed; preload_immediate: p1 = (opcode & (1 << 21)) ? "W" : ""; sprintf(cp, "PLD%s\t[r%d, #%d]\t; %#6.6x", p1, rn, immed, immed); return ERROR_OK; } mnemonic = "LDRB"; ldrxb_immediate_t3: immed = opcode & 0xff; if (!(opcode & 0x200)) immed = -immed; /* two indexed modes will write back rn */ if (opcode & 0x100) { if (opcode & 0x400) /* pre-indexed */ p2 = "]!"; else { /* post-indexed */ p1 = "]"; p2 = ""; } } ldrxb_immediate_t2: sprintf(cp, "%s\tr%d, [r%d%s, #%d%s\t; %#8.8x", mnemonic, rt, rn, p1, immed, p2, immed); return ERROR_OK; } if ((op2 & 0x24) == 0x24) { mnemonic = "LDRB"; goto ldrxb_immediate_t3; } if (op2 == 0) { int rm = opcode & 0xf; if (rt == 0x0f) sprintf(cp, "PLD\t"); else sprintf(cp, "LDRB.W\tr%d, ", rt); immed = (opcode >> 4) & 0x3; cp = strchr(cp, 0); sprintf(cp, "[r%d, r%d, LSL #%d]", rn, rm, immed); return ERROR_OK; } break; case 1: if ((rn & rt) == 0xf) goto pld_literal; if (rt == 0xf) { immed = opcode & 0xfff; goto preload_immediate; } if (rn == 0x0f) goto ldrb_literal; mnemonic = "LDRB.W"; immed = opcode & 0xfff; goto ldrxb_immediate_t2; case 2: if ((rn & rt) == 0xf) { immed = opcode & 0xfff; address = thumb_alignpc4(address); if (opcode & (1 << 23)) address += immed; else address -= immed; sprintf(cp, "PLI\t%#8.8" PRIx32, address); return ERROR_OK; } if (rn == 0xf && rt != 0xf) { ldrsb_literal: immed = opcode & 0xfff; address = thumb_alignpc4(address); if (opcode & (1 << 23)) address += immed; else address -= immed; sprintf(cp, "LDRSB\t%#8.8" PRIx32, address); return ERROR_OK; } if (rn == 0xf) break; if ((op2 & 0x3c) == 0x38) { immed = opcode & 0xff; sprintf(cp, "LDRSBT\tr%d, [r%d, #%d]\t; %#2.2x", rt, rn, immed, immed); return ERROR_OK; } if ((op2 & 0x3c) == 0x30) { if (rt == 0xf) { immed = opcode & 0xff; immed = -immed; // pli sprintf(cp, "PLI\t[r%d, #%d]\t; -%#2.2x", rn, immed, -immed); return ERROR_OK; } mnemonic = "LDRSB"; goto ldrxb_immediate_t3; } if ((op2 & 0x24) == 0x24) { mnemonic = "LDRSB"; goto ldrxb_immediate_t3; } if (op2 == 0) { int rm = opcode & 0xf; if (rt == 0x0f) sprintf(cp, "PLI\t"); else sprintf(cp, "LDRSB.W\tr%d, ", rt); immed = (opcode >> 4) & 0x3; cp = strchr(cp, 0); sprintf(cp, "[r%d, r%d, LSL #%d]", rn, rm, immed); return ERROR_OK; } break; case 3: if (rt == 0xf) { immed = opcode & 0xfff; sprintf(cp, "PLI\t[r%d, #%d]\t; %#3.3x", rn, immed, immed); return ERROR_OK; } if (rn == 0xf) goto ldrsb_literal; immed = opcode & 0xfff; mnemonic = "LDRSB"; goto ldrxb_immediate_t2; } return ERROR_INVALID_ARGUMENTS; } static int t2ev_load_halfword(uint32_t opcode, uint32_t address, arm_instruction_t *instruction, char *cp) { int rn = (opcode >> 16) & 0xf; int rt = (opcode >> 12) & 0xf; int op2 = (opcode >> 6) & 0x3f; char *sign = ""; unsigned immed; if (rt == 0xf) { sprintf(cp, "HINT (UNALLOCATED)"); return ERROR_OK; } if (opcode & (1 << 24)) sign = "S"; if ((opcode & (1 << 23)) == 0) { if (rn == 0xf) { ldrh_literal: immed = opcode & 0xfff; address = thumb_alignpc4(address); if (opcode & (1 << 23)) address += immed; else address -= immed; sprintf(cp, "LDR%sH\tr%d, %#8.8" PRIx32, sign, rt, address); return ERROR_OK; } if (op2 == 0) { int rm = opcode & 0xf; immed = (opcode >> 4) & 0x3; sprintf(cp, "LDR%sH.W\tr%d, [r%d, r%d, LSL #%d]", sign, rt, rn, rm, immed); return ERROR_OK; } if ((op2 & 0x3c) == 0x38) { immed = opcode & 0xff; sprintf(cp, "LDR%sHT\tr%d, [r%d, #%d]\t; %#2.2x", sign, rt, rn, immed, immed); return ERROR_OK; } if ((op2 & 0x3c) == 0x30 || (op2 & 0x24) == 0x24) { char *p1 = "", *p2 = "]"; immed = opcode & 0xff; if (!(opcode & 0x200)) immed = -immed; /* two indexed modes will write back rn */ if (opcode & 0x100) { if (opcode & 0x400) /* pre-indexed */ p2 = "]!"; else { /* post-indexed */ p1 = "]"; p2 = ""; } } sprintf(cp, "LDR%sH\tr%d, [r%d%s, #%d%s\t; %#8.8x", sign, rt, rn, p1, immed, p2, immed); return ERROR_OK; } } else { if (rn == 0xf) goto ldrh_literal; immed = opcode & 0xfff; sprintf(cp, "LDR%sH%s\tr%d, [r%d, #%d]\t; %#6.6x", sign, *sign ? "" : ".W", rt, rn, immed, immed); return ERROR_OK; } return ERROR_INVALID_ARGUMENTS; } /* * REVISIT for Thumb2 instructions, instruction->type and friends aren't * always set. That means eventual arm_simulate_step() support for Thumb2 * will need work in this area. */ int thumb2_opcode(target_t *target, uint32_t address, arm_instruction_t *instruction) { int retval; uint16_t op; uint32_t opcode; char *cp; /* clear low bit ... it's set on function pointers */ address &= ~1; /* clear fields, to avoid confusion */ memset(instruction, 0, sizeof(arm_instruction_t)); /* read first halfword, see if this is the only one */ retval = target_read_u16(target, address, &op); if (retval != ERROR_OK) return retval; switch (op & 0xf800) { case 0xf800: case 0xf000: case 0xe800: /* 32-bit instructions */ instruction->instruction_size = 4; opcode = op << 16; retval = target_read_u16(target, address + 2, &op); if (retval != ERROR_OK) return retval; opcode |= op; instruction->opcode = opcode; break; default: /* 16-bit: Thumb1 + IT + CBZ/CBNZ + ... */ return thumb_evaluate_opcode(op, address, instruction); } snprintf(instruction->text, 128, "0x%8.8" PRIx32 " 0x%8.8" PRIx32 "\t", address, opcode); cp = strchr(instruction->text, 0); retval = ERROR_FAIL; /* ARMv7-M: A5.3.1 Data processing (modified immediate) */ if ((opcode & 0x1a008000) == 0x10000000) retval = t2ev_data_mod_immed(opcode, address, instruction, cp); /* ARMv7-M: A5.3.3 Data processing (plain binary immediate) */ else if ((opcode & 0x1a008000) == 0x12000000) retval = t2ev_data_immed(opcode, address, instruction, cp); /* ARMv7-M: A5.3.4 Branches and miscellaneous control */ else if ((opcode & 0x18008000) == 0x10008000) retval = t2ev_b_misc(opcode, address, instruction, cp); /* ARMv7-M: A5.3.5 Load/store multiple */ else if ((opcode & 0x1e400000) == 0x08000000) retval = t2ev_ldm_stm(opcode, address, instruction, cp); /* ARMv7-M: A5.3.6 Load/store dual or exclusive, table branch */ else if ((opcode & 0x1e400000) == 0x08400000) retval = t2ev_ldrex_strex(opcode, address, instruction, cp); /* ARMv7-M: A5.3.7 Load word */ else if ((opcode & 0x1f700000) == 0x18500000) retval = t2ev_load_word(opcode, address, instruction, cp); /* ARMv7-M: A5.3.8 Load halfword, unallocated memory hints */ else if ((opcode & 0x1e700000) == 0x18300000) retval = t2ev_load_halfword(opcode, address, instruction, cp); /* ARMv7-M: A5.3.9 Load byte, memory hints */ else if ((opcode & 0x1e700000) == 0x18100000) retval = t2ev_load_byte_hints(opcode, address, instruction, cp); /* ARMv7-M: A5.3.10 Store single data item */ else if ((opcode & 0x1f100000) == 0x18000000) retval = t2ev_store_single(opcode, address, instruction, cp); /* ARMv7-M: A5.3.11 Data processing (shifted register) */ else if ((opcode & 0x1e000000) == 0x0a000000) retval = t2ev_data_shift(opcode, address, instruction, cp); /* ARMv7-M: A5.3.12 Data processing (register) * and A5.3.13 Miscellaneous operations */ else if ((opcode & 0x1f000000) == 0x1a000000) retval = t2ev_data_reg(opcode, address, instruction, cp); /* ARMv7-M: A5.3.14 Multiply, and multiply accumulate */ else if ((opcode & 0x1f800000) == 0x1b000000) retval = t2ev_mul32(opcode, address, instruction, cp); /* ARMv7-M: A5.3.15 Long multiply, long multiply accumulate, divide */ else if ((opcode & 0x1f800000) == 0x1b800000) retval = t2ev_mul64_div(opcode, address, instruction, cp); if (retval == ERROR_OK) return retval; /* * Thumb2 also supports coprocessor, ThumbEE, and DSP/Media (SIMD) * instructions; not yet handled here. */ if (retval == ERROR_INVALID_ARGUMENTS) { instruction->type = ARM_UNDEFINED_INSTRUCTION; strcpy(cp, "UNDEFINED OPCODE"); return ERROR_OK; } LOG_DEBUG("Can't decode 32-bit Thumb2 yet (opcode=%08" PRIx32 ")", opcode); strcpy(cp, "(32-bit Thumb2 ...)"); return ERROR_OK; } 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; } } 7 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044