diff options
Diffstat (limited to 'disas/lm32.c')
| -rw-r--r-- | disas/lm32.c | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/disas/lm32.c b/disas/lm32.c deleted file mode 100644 index 4fbb124..0000000 --- a/disas/lm32.c +++ /dev/null @@ -1,361 +0,0 @@ -/* - * Simple LatticeMico32 disassembler. - * - * Copyright (c) 2012 Michael Walle <michael@walle.cc> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - * - */ - -#include "qemu/osdep.h" -#include "disas/dis-asm.h" - -typedef enum { - LM32_OP_SRUI = 0, LM32_OP_NORI, LM32_OP_MULI, LM32_OP_SH, LM32_OP_LB, - LM32_OP_SRI, LM32_OP_XORI, LM32_OP_LH, LM32_OP_ANDI, LM32_OP_XNORI, - LM32_OP_LW, LM32_OP_LHU, LM32_OP_SB, LM32_OP_ADDI, LM32_OP_ORI, - LM32_OP_SLI, LM32_OP_LBU, LM32_OP_BE, LM32_OP_BG, LM32_OP_BGE, - LM32_OP_BGEU, LM32_OP_BGU, LM32_OP_SW, LM32_OP_BNE, LM32_OP_ANDHI, - LM32_OP_CMPEI, LM32_OP_CMPGI, LM32_OP_CMPGEI, LM32_OP_CMPGEUI, - LM32_OP_CMPGUI, LM32_OP_ORHI, LM32_OP_CMPNEI, LM32_OP_SRU, LM32_OP_NOR, - LM32_OP_MUL, LM32_OP_DIVU, LM32_OP_RCSR, LM32_OP_SR, LM32_OP_XOR, - LM32_OP_ILL0, LM32_OP_AND, LM32_OP_XNOR, LM32_OP_ILL1, LM32_OP_SCALL, - LM32_OP_SEXTB, LM32_OP_ADD, LM32_OP_OR, LM32_OP_SL, LM32_OP_B, - LM32_OP_MODU, LM32_OP_SUB, LM32_OP_ILL2, LM32_OP_WCSR, LM32_OP_ILL3, - LM32_OP_CALL, LM32_OP_SEXTH, LM32_OP_BI, LM32_OP_CMPE, LM32_OP_CMPG, - LM32_OP_CMPGE, LM32_OP_CMPGEU, LM32_OP_CMPGU, LM32_OP_CALLI, LM32_OP_CMPNE, -} Lm32Opcode; - -typedef enum { - FMT_INVALID = 0, FMT_RRI5, FMT_RRI16, FMT_IMM26, FMT_LOAD, FMT_STORE, - FMT_RRR, FMT_R, FMT_RNR, FMT_CRN, FMT_CNR, FMT_BREAK, -} Lm32OpcodeFmt; - -typedef enum { - LM32_CSR_IE = 0, LM32_CSR_IM, LM32_CSR_IP, LM32_CSR_ICC, LM32_CSR_DCC, - LM32_CSR_CC, LM32_CSR_CFG, LM32_CSR_EBA, LM32_CSR_DC, LM32_CSR_DEBA, - LM32_CSR_CFG2, LM32_CSR_JTX = 0xe, LM32_CSR_JRX, LM32_CSR_BP0, - LM32_CSR_BP1, LM32_CSR_BP2, LM32_CSR_BP3, LM32_CSR_WP0 = 0x18, - LM32_CSR_WP1, LM32_CSR_WP2, LM32_CSR_WP3, -} Lm32CsrNum; - -typedef struct { - int csr; - const char *name; -} Lm32CsrInfo; - -static const Lm32CsrInfo lm32_csr_info[] = { - {LM32_CSR_IE, "ie", }, - {LM32_CSR_IM, "im", }, - {LM32_CSR_IP, "ip", }, - {LM32_CSR_ICC, "icc", }, - {LM32_CSR_DCC, "dcc", }, - {LM32_CSR_CC, "cc", }, - {LM32_CSR_CFG, "cfg", }, - {LM32_CSR_EBA, "eba", }, - {LM32_CSR_DC, "dc", }, - {LM32_CSR_DEBA, "deba", }, - {LM32_CSR_CFG2, "cfg2", }, - {LM32_CSR_JTX, "jtx", }, - {LM32_CSR_JRX, "jrx", }, - {LM32_CSR_BP0, "bp0", }, - {LM32_CSR_BP1, "bp1", }, - {LM32_CSR_BP2, "bp2", }, - {LM32_CSR_BP3, "bp3", }, - {LM32_CSR_WP0, "wp0", }, - {LM32_CSR_WP1, "wp1", }, - {LM32_CSR_WP2, "wp2", }, - {LM32_CSR_WP3, "wp3", }, -}; - -static const Lm32CsrInfo *find_csr_info(int csr) -{ - const Lm32CsrInfo *info; - int i; - - for (i = 0; i < ARRAY_SIZE(lm32_csr_info); i++) { - info = &lm32_csr_info[i]; - if (csr == info->csr) { - return info; - } - } - - return NULL; -} - -typedef struct { - int reg; - const char *name; -} Lm32RegInfo; - -typedef enum { - LM32_REG_R0 = 0, LM32_REG_R1, LM32_REG_R2, LM32_REG_R3, LM32_REG_R4, - LM32_REG_R5, LM32_REG_R6, LM32_REG_R7, LM32_REG_R8, LM32_REG_R9, - LM32_REG_R10, LM32_REG_R11, LM32_REG_R12, LM32_REG_R13, LM32_REG_R14, - LM32_REG_R15, LM32_REG_R16, LM32_REG_R17, LM32_REG_R18, LM32_REG_R19, - LM32_REG_R20, LM32_REG_R21, LM32_REG_R22, LM32_REG_R23, LM32_REG_R24, - LM32_REG_R25, LM32_REG_GP, LM32_REG_FP, LM32_REG_SP, LM32_REG_RA, - LM32_REG_EA, LM32_REG_BA, -} Lm32RegNum; - -static const Lm32RegInfo lm32_reg_info[] = { - {LM32_REG_R0, "r0", }, - {LM32_REG_R1, "r1", }, - {LM32_REG_R2, "r2", }, - {LM32_REG_R3, "r3", }, - {LM32_REG_R4, "r4", }, - {LM32_REG_R5, "r5", }, - {LM32_REG_R6, "r6", }, - {LM32_REG_R7, "r7", }, - {LM32_REG_R8, "r8", }, - {LM32_REG_R9, "r9", }, - {LM32_REG_R10, "r10", }, - {LM32_REG_R11, "r11", }, - {LM32_REG_R12, "r12", }, - {LM32_REG_R13, "r13", }, - {LM32_REG_R14, "r14", }, - {LM32_REG_R15, "r15", }, - {LM32_REG_R16, "r16", }, - {LM32_REG_R17, "r17", }, - {LM32_REG_R18, "r18", }, - {LM32_REG_R19, "r19", }, - {LM32_REG_R20, "r20", }, - {LM32_REG_R21, "r21", }, - {LM32_REG_R22, "r22", }, - {LM32_REG_R23, "r23", }, - {LM32_REG_R24, "r24", }, - {LM32_REG_R25, "r25", }, - {LM32_REG_GP, "gp", }, - {LM32_REG_FP, "fp", }, - {LM32_REG_SP, "sp", }, - {LM32_REG_RA, "ra", }, - {LM32_REG_EA, "ea", }, - {LM32_REG_BA, "ba", }, -}; - -static const Lm32RegInfo *find_reg_info(int reg) -{ - assert(ARRAY_SIZE(lm32_reg_info) == 32); - return &lm32_reg_info[reg & 0x1f]; -} - -typedef struct { - struct { - uint32_t code; - uint32_t mask; - } op; - const char *name; - const char *args_fmt; -} Lm32OpcodeInfo; - -static const Lm32OpcodeInfo lm32_opcode_info[] = { - /* pseudo instructions */ - {{0x34000000, 0xffffffff}, "nop", NULL}, - {{0xac000002, 0xffffffff}, "break", NULL}, - {{0xac000003, 0xffffffff}, "scall", NULL}, - {{0xc3e00000, 0xffffffff}, "bret", NULL}, - {{0xc3c00000, 0xffffffff}, "eret", NULL}, - {{0xc3a00000, 0xffffffff}, "ret", NULL}, - {{0xa4000000, 0xfc1f07ff}, "not", "%2, %0"}, - {{0xb8000000, 0xfc1f07ff}, "mv", "%2, %0"}, - {{0x71e00000, 0xffe00000}, "mvhi", "%1, %u"}, - {{0x34000000, 0xffe00000}, "mvi", "%1, %s"}, - -#define _O(op) {op << 26, 0x3f << 26} - /* regular opcodes */ - {_O(LM32_OP_ADD), "add", "%2, %0, %1" }, - {_O(LM32_OP_ADDI), "addi", "%1, %0, %s" }, - {_O(LM32_OP_AND), "and", "%2, %0, %1" }, - {_O(LM32_OP_ANDHI), "andhi", "%1, %0, %u" }, - {_O(LM32_OP_ANDI), "andi", "%1, %0, %u" }, - {_O(LM32_OP_B), "b", "%0", }, - {_O(LM32_OP_BE), "be", "%1, %0, %r" }, - {_O(LM32_OP_BG), "bg", "%1, %0, %r" }, - {_O(LM32_OP_BGE), "bge", "%1, %0, %r" }, - {_O(LM32_OP_BGEU), "bgeu", "%1, %0, %r" }, - {_O(LM32_OP_BGU), "bgu", "%1, %0, %r" }, - {_O(LM32_OP_BI), "bi", "%R", }, - {_O(LM32_OP_BNE), "bne", "%1, %0, %r" }, - {_O(LM32_OP_CALL), "call", "%0", }, - {_O(LM32_OP_CALLI), "calli", "%R", }, - {_O(LM32_OP_CMPE), "cmpe", "%2, %0, %1" }, - {_O(LM32_OP_CMPEI), "cmpei", "%1, %0, %s" }, - {_O(LM32_OP_CMPG), "cmpg", "%2, %0, %1" }, - {_O(LM32_OP_CMPGE), "cmpge", "%2, %0, %1" }, - {_O(LM32_OP_CMPGEI), "cmpgei", "%1, %0, %s" }, - {_O(LM32_OP_CMPGEU), "cmpgeu", "%2, %0, %1" }, - {_O(LM32_OP_CMPGEUI), "cmpgeui", "%1, %0, %s" }, - {_O(LM32_OP_CMPGI), "cmpgi", "%1, %0, %s" }, - {_O(LM32_OP_CMPGU), "cmpgu", "%2, %0, %1" }, - {_O(LM32_OP_CMPGUI), "cmpgui", "%1, %0, %s" }, - {_O(LM32_OP_CMPNE), "cmpne", "%2, %0, %1" }, - {_O(LM32_OP_CMPNEI), "cmpnei", "%1, %0, %s" }, - {_O(LM32_OP_DIVU), "divu", "%2, %0, %1" }, - {_O(LM32_OP_LB), "lb", "%1, (%0+%s)" }, - {_O(LM32_OP_LBU), "lbu", "%1, (%0+%s)" }, - {_O(LM32_OP_LH), "lh", "%1, (%0+%s)" }, - {_O(LM32_OP_LHU), "lhu", "%1, (%0+%s)" }, - {_O(LM32_OP_LW), "lw", "%1, (%0+%s)" }, - {_O(LM32_OP_MODU), "modu", "%2, %0, %1" }, - {_O(LM32_OP_MULI), "muli", "%1, %0, %s" }, - {_O(LM32_OP_MUL), "mul", "%2, %0, %1" }, - {_O(LM32_OP_NORI), "nori", "%1, %0, %u" }, - {_O(LM32_OP_NOR), "nor", "%2, %0, %1" }, - {_O(LM32_OP_ORHI), "orhi", "%1, %0, %u" }, - {_O(LM32_OP_ORI), "ori", "%1, %0, %u" }, - {_O(LM32_OP_OR), "or", "%2, %0, %1" }, - {_O(LM32_OP_RCSR), "rcsr", "%2, %c", }, - {_O(LM32_OP_SB), "sb", "(%0+%s), %1" }, - {_O(LM32_OP_SEXTB), "sextb", "%2, %0", }, - {_O(LM32_OP_SEXTH), "sexth", "%2, %0", }, - {_O(LM32_OP_SH), "sh", "(%0+%s), %1" }, - {_O(LM32_OP_SLI), "sli", "%1, %0, %h" }, - {_O(LM32_OP_SL), "sl", "%2, %0, %1" }, - {_O(LM32_OP_SRI), "sri", "%1, %0, %h" }, - {_O(LM32_OP_SR), "sr", "%2, %0, %1" }, - {_O(LM32_OP_SRUI), "srui", "%1, %0, %d" }, - {_O(LM32_OP_SRU), "sru", "%2, %0, %s" }, - {_O(LM32_OP_SUB), "sub", "%2, %0, %s" }, - {_O(LM32_OP_SW), "sw", "(%0+%s), %1" }, - {_O(LM32_OP_WCSR), "wcsr", "%c, %1", }, - {_O(LM32_OP_XNORI), "xnori", "%1, %0, %u" }, - {_O(LM32_OP_XNOR), "xnor", "%2, %0, %1" }, - {_O(LM32_OP_XORI), "xori", "%1, %0, %u" }, - {_O(LM32_OP_XOR), "xor", "%2, %0, %1" }, -#undef _O -}; - -static const Lm32OpcodeInfo *find_opcode_info(uint32_t opcode) -{ - const Lm32OpcodeInfo *info; - int i; - for (i = 0; i < ARRAY_SIZE(lm32_opcode_info); i++) { - info = &lm32_opcode_info[i]; - if ((opcode & info->op.mask) == info->op.code) { - return info; - } - } - - return NULL; -} - -int print_insn_lm32(bfd_vma memaddr, struct disassemble_info *info) -{ - fprintf_function fprintf_fn = info->fprintf_func; - void *stream = info->stream; - int rc; - uint8_t insn[4]; - const Lm32OpcodeInfo *opc_info; - uint32_t op; - const char *args_fmt; - - rc = info->read_memory_func(memaddr, insn, 4, info); - if (rc != 0) { - info->memory_error_func(rc, memaddr, info); - return -1; - } - - fprintf_fn(stream, "%02x %02x %02x %02x ", - insn[0], insn[1], insn[2], insn[3]); - - op = bfd_getb32(insn); - opc_info = find_opcode_info(op); - if (opc_info) { - fprintf_fn(stream, "%-8s ", opc_info->name); - args_fmt = opc_info->args_fmt; - while (args_fmt && *args_fmt) { - if (*args_fmt == '%') { - switch (*(++args_fmt)) { - case '0': { - uint8_t r0; - const char *r0_name; - r0 = (op >> 21) & 0x1f; - r0_name = find_reg_info(r0)->name; - fprintf_fn(stream, "%s", r0_name); - break; - } - case '1': { - uint8_t r1; - const char *r1_name; - r1 = (op >> 16) & 0x1f; - r1_name = find_reg_info(r1)->name; - fprintf_fn(stream, "%s", r1_name); - break; - } - case '2': { - uint8_t r2; - const char *r2_name; - r2 = (op >> 11) & 0x1f; - r2_name = find_reg_info(r2)->name; - fprintf_fn(stream, "%s", r2_name); - break; - } - case 'c': { - uint8_t csr; - const Lm32CsrInfo *info; - csr = (op >> 21) & 0x1f; - info = find_csr_info(csr); - if (info) { - fprintf_fn(stream, "%s", info->name); - } else { - fprintf_fn(stream, "0x%x", csr); - } - break; - } - case 'u': { - uint16_t u16; - u16 = op & 0xffff; - fprintf_fn(stream, "0x%x", u16); - break; - } - case 's': { - int16_t s16; - s16 = (int16_t)(op & 0xffff); - fprintf_fn(stream, "%d", s16); - break; - } - case 'r': { - uint32_t rela; - rela = memaddr + (((int16_t)(op & 0xffff)) << 2); - fprintf_fn(stream, "%x", rela); - break; - } - case 'R': { - uint32_t rela; - int32_t imm26; - imm26 = (int32_t)((op & 0x3ffffff) << 6) >> 4; - rela = memaddr + imm26; - fprintf_fn(stream, "%x", rela); - break; - } - case 'h': { - uint8_t u5; - u5 = (op & 0x1f); - fprintf_fn(stream, "%d", u5); - break; - } - default: - break; - } - } else { - fprintf_fn(stream, "%c", *args_fmt); - } - args_fmt++; - } - } else { - fprintf_fn(stream, ".word 0x%x", op); - } - - return 4; -} |