Nguyen Anh Quynh | c80d840 | 2014-05-26 23:02:48 +0800 | [diff] [blame] | 1 | //===-- XCoreInstPrinter.cpp - Convert XCore MCInst to assembly syntax --------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This class prints an XCore MCInst to a .s file. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | /* Capstone Disassembly Engine */ |
| 15 | /* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2014 */ |
| 16 | |
| 17 | #ifdef CAPSTONE_HAS_XCORE |
| 18 | |
| 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <string.h> |
| 22 | #include <inttypes.h> |
| 23 | |
| 24 | #include "XCoreInstPrinter.h" |
| 25 | #include "../../MCInst.h" |
| 26 | #include "../../utils.h" |
| 27 | #include "../../SStream.h" |
| 28 | #include "../../MCRegisterInfo.h" |
| 29 | #include "../../MathExtras.h" |
| 30 | #include "XCoreMapping.h" |
| 31 | |
| 32 | static const char *getRegisterName(unsigned RegNo); |
| 33 | |
| 34 | void XCore_post_printer(csh ud, cs_insn *insn, char *insn_asm, MCInst *mci) |
| 35 | { |
| 36 | /* |
| 37 | if (((cs_struct *)ud)->detail != CS_OPT_ON) |
| 38 | return; |
| 39 | */ |
| 40 | } |
| 41 | |
| 42 | static void set_mem_access(MCInst *MI, bool status, int reg) |
| 43 | { |
| 44 | if (MI->csh->detail != CS_OPT_ON) |
| 45 | return; |
| 46 | |
| 47 | MI->csh->doing_mem = status; |
| 48 | if (status) { |
| 49 | if (reg != 0xffff && reg != -0xffff) { |
| 50 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].type = XCORE_OP_MEM; |
| 51 | if (reg) { |
| 52 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.base = reg; |
| 53 | } else { |
| 54 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.base = XCORE_REG_INVALID; |
| 55 | } |
| 56 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.index = XCORE_REG_INVALID; |
| 57 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.disp = 0; |
| 58 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.sign = 1; |
| 59 | } else { |
| 60 | // the last op should be the memory base |
| 61 | MI->flat_insn.xcore.op_count--; |
| 62 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].type = XCORE_OP_MEM; |
| 63 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.base = MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].reg; |
| 64 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.index = XCORE_REG_INVALID; |
| 65 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.disp = 0; |
| 66 | if (reg > 0) |
| 67 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.sign = 1; |
| 68 | else |
| 69 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.sign = -1; |
| 70 | } |
| 71 | } else { |
| 72 | // done, create the next operand slot |
| 73 | MI->flat_insn.xcore.op_count++; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | static void _printOperand(MCInst *MI, MCOperand *MO, SStream *O) |
| 78 | { |
| 79 | if (MCOperand_isReg(MO)) { |
| 80 | unsigned reg; |
| 81 | |
| 82 | reg = MCOperand_getReg(MO); |
| 83 | SStream_concat(O, "%s", getRegisterName(reg)); |
| 84 | |
| 85 | if (MI->csh->detail) { |
| 86 | if (MI->csh->doing_mem) { |
| 87 | if (MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.base == ARM_REG_INVALID) |
| 88 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.base = reg; |
| 89 | else |
| 90 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.index = reg; |
| 91 | } else { |
| 92 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].type = XCORE_OP_REG; |
| 93 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].reg = reg; |
| 94 | MI->flat_insn.xcore.op_count++; |
| 95 | } |
| 96 | } |
| 97 | } else if (MCOperand_isImm(MO)) { |
| 98 | int32_t Imm = (int32_t)MCOperand_getImm(MO); |
| 99 | |
| 100 | if (Imm >= 0) { |
| 101 | if (Imm > HEX_THRESHOLD) |
| 102 | SStream_concat(O, "0x%x", Imm); |
| 103 | else |
| 104 | SStream_concat(O, "%u", Imm); |
| 105 | } else { |
| 106 | if (Imm < -HEX_THRESHOLD) |
| 107 | SStream_concat(O, "-0x%x", -Imm); |
| 108 | else |
| 109 | SStream_concat(O, "-%u", -Imm); |
| 110 | } |
| 111 | |
| 112 | if (MI->csh->detail) { |
| 113 | if (MI->csh->doing_mem) { |
| 114 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].mem.disp = Imm; |
| 115 | } else { |
| 116 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].type = XCORE_OP_IMM; |
| 117 | MI->flat_insn.xcore.operands[MI->flat_insn.xcore.op_count].imm = Imm; |
| 118 | MI->flat_insn.xcore.op_count++; |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | static void printOperand(MCInst *MI, int OpNum, SStream *O) |
| 125 | { |
| 126 | _printOperand(MI, MCInst_getOperand(MI, OpNum), O); |
| 127 | } |
| 128 | |
| 129 | static void printInlineJT(MCInst *MI, int OpNum, SStream *O) |
| 130 | { |
| 131 | } |
| 132 | |
| 133 | static void printInlineJT32(MCInst *MI, int OpNum, SStream *O) |
| 134 | { |
| 135 | } |
| 136 | |
| 137 | #define PRINT_ALIAS_INSTR |
| 138 | #include "XCoreGenAsmWriter.inc" |
| 139 | |
| 140 | void XCore_printInst(MCInst *MI, SStream *O, void *Info) |
| 141 | { |
| 142 | printInstruction(MI, O, Info); |
| 143 | } |
| 144 | |
| 145 | #endif |