/src/capstonenext/arch/MOS65XX/MOS65XXDisassembler.c

Source (jump to first uncovered line)
/* Capstone Disassembly Engine */
/* MOS65XX Backend by Sebastian Macke <sebastian@macke.de> 2018 */

#include "capstone/mos65xx.h"
#include "MOS65XXDisassembler.h"
#include "MOS65XXDisassemblerInternals.h"

typedef struct OpInfo {
  mos65xx_insn ins;
  mos65xx_address_mode am;
  int operand_bytes;
} OpInfo;

static const struct OpInfo OpInfoTable[]= {

#include "m6502.inc"
#include "m65c02.inc"
#include "mw65c02.inc"
#include "m65816.inc"

};

#ifndef CAPSTONE_DIET
static const char* const RegNames[] = {
  "invalid", "A", "X", "Y", "P", "SP", "DP", "B", "K" 
};

static const char* const GroupNames[] = {
  NULL,
  "jump",
  "call",
  "ret",
  "int",
  "iret",
  "branch_relative"
};

typedef struct InstructionInfo {
  const char* name;
  mos65xx_group_type group_type;
  mos65xx_reg write, read;
  bool modifies_status;
} InstructionInfo;

static const struct InstructionInfo InstructionInfoTable[]= {

#include "instruction_info.inc"

};
#endif

#ifndef CAPSTONE_DIET
static void fillDetails(MCInst *MI, struct OpInfo opinfo, int cpu_type)
{
  int i;
  cs_detail *detail = MI->flat_insn->detail;

  InstructionInfo insinfo = InstructionInfoTable[opinfo.ins];

  detail->mos65xx.am = opinfo.am;
  detail->mos65xx.modifies_flags = insinfo.modifies_status;
  detail->groups_count = 0;
  detail->regs_read_count = 0;
  detail->regs_write_count = 0;
  detail->mos65xx.op_count = 0;

  if (insinfo.group_type != MOS65XX_GRP_INVALID) {
    detail->groups[detail->groups_count] = insinfo.group_type;
    detail->groups_count++;
  }

  if (opinfo.am == MOS65XX_AM_REL || opinfo.am == MOS65XX_AM_ZP_REL) {
    detail->groups[detail->groups_count] = MOS65XX_GRP_BRANCH_RELATIVE;
    detail->groups_count++; 
  }

  if (insinfo.read != MOS65XX_REG_INVALID) {
    detail->regs_read[detail->regs_read_count++] = insinfo.read;
  } else switch(opinfo.am) {
    case MOS65XX_AM_ACC:
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_ACC;
      break;
    case MOS65XX_AM_ZP_Y:
    case MOS65XX_AM_ZP_IND_Y:
    case MOS65XX_AM_ABS_Y:
    case MOS65XX_AM_ZP_IND_LONG_Y:
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_Y;
      break;

    case MOS65XX_AM_ZP_X:
    case MOS65XX_AM_ZP_X_IND:
    case MOS65XX_AM_ABS_X:
    case MOS65XX_AM_ABS_X_IND:
    case MOS65XX_AM_ABS_LONG_X:
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_X;
      break;

    case MOS65XX_AM_SR:
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
      break;
    case MOS65XX_AM_SR_IND_Y:
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_Y;
      break;

    default:
      break;
  }

  if (insinfo.write != MOS65XX_REG_INVALID) {
    detail->regs_write[detail->regs_write_count++] = insinfo.write;
  } else if (opinfo.am == MOS65XX_AM_ACC) {
    detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_ACC;
  }


  switch(opinfo.ins) {
    case MOS65XX_INS_ADC:
    case MOS65XX_INS_SBC:
    case MOS65XX_INS_ROL:
    case MOS65XX_INS_ROR:
      /* these read carry flag (and decimal for ADC/SBC) */
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_P;
      break;
    /* stack operations */
    case MOS65XX_INS_JSL:
    case MOS65XX_INS_JSR:
    case MOS65XX_INS_PEA:
    case MOS65XX_INS_PEI:
    case MOS65XX_INS_PER:
    case MOS65XX_INS_PHA:
    case MOS65XX_INS_PHB:
    case MOS65XX_INS_PHD:
    case MOS65XX_INS_PHK:
    case MOS65XX_INS_PHP:
    case MOS65XX_INS_PHX:
    case MOS65XX_INS_PHY:
    case MOS65XX_INS_PLA:
    case MOS65XX_INS_PLB:
    case MOS65XX_INS_PLD:
    case MOS65XX_INS_PLP:
    case MOS65XX_INS_PLX:
    case MOS65XX_INS_PLY:
    case MOS65XX_INS_RTI:
    case MOS65XX_INS_RTL:
    case MOS65XX_INS_RTS:
      detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
      detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_SP;
      break;
    default:
      break;
  }

  if (cpu_type == MOS65XX_CPU_TYPE_65816) {
    switch (opinfo.am) {
      case MOS65XX_AM_ZP:
      case MOS65XX_AM_ZP_X:
      case MOS65XX_AM_ZP_Y:
      case MOS65XX_AM_ZP_IND:
      case MOS65XX_AM_ZP_X_IND:
      case MOS65XX_AM_ZP_IND_Y:
      case MOS65XX_AM_ZP_IND_LONG:
      case MOS65XX_AM_ZP_IND_LONG_Y:
        detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_DP;
        break;
      case MOS65XX_AM_BLOCK:
        detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_ACC;
        detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_X;
        detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_Y;
        detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_ACC;
        detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_X;
        detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_Y;
        detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_B;
        break;
      default:
        break;
    }

    switch (opinfo.am) {
      case MOS65XX_AM_ZP_IND:
      case MOS65XX_AM_ZP_X_IND:
      case MOS65XX_AM_ZP_IND_Y:
      case MOS65XX_AM_ABS:
      case MOS65XX_AM_ABS_X:
      case MOS65XX_AM_ABS_Y:
      case MOS65XX_AM_ABS_X_IND:
        /* these depend on the databank to generate a 24-bit address */
        /* exceptions: PEA, PEI, and JMP (abs) */
        if (opinfo.ins == MOS65XX_INS_PEI || opinfo.ins == MOS65XX_INS_PEA) break;
        detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_B;
        break;
      default:
        break;
    }
  }

  if (insinfo.modifies_status) {
    detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_P;
  }

  switch(opinfo.am) {
    case MOS65XX_AM_IMP:
      break;
    case MOS65XX_AM_IMM:
      detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_IMM;
      detail->mos65xx.operands[detail->mos65xx.op_count].imm = MI->Operands[0].ImmVal;
      detail->mos65xx.op_count++;
      break;
    case MOS65XX_AM_ACC:
      detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_REG;
      detail->mos65xx.operands[detail->mos65xx.op_count].reg = MOS65XX_REG_ACC;
      detail->mos65xx.op_count++;
      break;
    case MOS65XX_AM_REL: {
      int value = MI->Operands[0].ImmVal;
      if (MI->op1_size == 1)
        value = 2 + (signed char)value;
      else
        value = 3 + (signed short)value;
      detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_MEM;
      detail->mos65xx.operands[detail->mos65xx.op_count].mem = (MI->address + value) & 0xffff;
      detail->mos65xx.op_count++;
      break;
    }
    case MOS65XX_AM_ZP_REL: {
      int value = 3 + (signed char)MI->Operands[1].ImmVal;
      /* BBR0, zp, rel  and BBS0, zp, rel */
      detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_MEM;
      detail->mos65xx.operands[detail->mos65xx.op_count].mem = MI->Operands[0].ImmVal;
      detail->mos65xx.operands[detail->mos65xx.op_count+1].type = MOS65XX_OP_MEM;
      detail->mos65xx.operands[detail->mos65xx.op_count+1].mem = (MI->address + value) & 0xffff;
      detail->mos65xx.op_count+=2;
      break;
    }
    default:
      for (i = 0; i < MI->size; ++i) {
        detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_MEM;
        detail->mos65xx.operands[detail->mos65xx.op_count].mem = MI->Operands[i].ImmVal;
        detail->mos65xx.op_count++;
      }
      break;
  }
}
#endif

void MOS65XX_printInst(MCInst *MI, struct SStream *O, void *PrinterInfo)
{
#ifndef CAPSTONE_DIET
  unsigned int value;
  unsigned opcode = MCInst_getOpcode(MI);
  mos65xx_info *info = (mos65xx_info *)PrinterInfo;

  OpInfo opinfo = OpInfoTable[opcode];

  const char *prefix = info->hex_prefix ? info->hex_prefix : "0x";

  SStream_concat0(O, InstructionInfoTable[opinfo.ins].name);
  switch (opinfo.ins) {
    /* special case - bit included as part of the instruction name */
    case MOS65XX_INS_BBR:
    case MOS65XX_INS_BBS:
    case MOS65XX_INS_RMB:
    case MOS65XX_INS_SMB:
      SStream_concat(O, "%d", (opcode >> 4) & 0x07);
      break;
    default:
      break;
  }

  value = MI->Operands[0].ImmVal;

  switch (opinfo.am) {
    default:
      break;

    case MOS65XX_AM_IMP:
      break;

    case MOS65XX_AM_ACC:
      SStream_concat0(O, " a");
      break;

    case MOS65XX_AM_IMM:
      if (MI->imm_size == 1)
        SStream_concat(O, " #%s%02x", prefix, value);
      else
        SStream_concat(O, " #%s%04x", prefix, value);
      break;

    case MOS65XX_AM_ZP:
      SStream_concat(O, " %s%02x", prefix, value);
      break;

    case MOS65XX_AM_ABS:
      SStream_concat(O, " %s%04x", prefix, value);
      break;

    case MOS65XX_AM_ABS_LONG_X:
      SStream_concat(O, " %s%06x, x", prefix, value);
      break;

    case MOS65XX_AM_INT:
      SStream_concat(O, " %s%02x", prefix, value);
      break;

    case MOS65XX_AM_ABS_X:
      SStream_concat(O, " %s%04x, x", prefix, value);
      break;

    case MOS65XX_AM_ABS_Y:
      SStream_concat(O, " %s%04x, y", prefix, value);
      break;

    case MOS65XX_AM_ABS_LONG:
      SStream_concat(O, " %s%06x", prefix, value);
      break;

    case MOS65XX_AM_ZP_X:
      SStream_concat(O, " %s%02x, x", prefix, value);
      break;

    case MOS65XX_AM_ZP_Y:
      SStream_concat(O, " %s%02x, y", prefix, value);
      break;

    case MOS65XX_AM_REL:
      if (MI->op1_size == 1)
        value = 2 + (signed char)value;
      else
        value = 3 + (signed short)value;

      SStream_concat(O, " %s%04x", prefix, 
        (MI->address + value) & 0xffff);
      break;

    case MOS65XX_AM_ABS_IND:
      SStream_concat(O, " (%s%04x)", prefix, value);
      break;

    case MOS65XX_AM_ABS_X_IND:
      SStream_concat(O, " (%s%04x, x)", prefix, value);
      break;

    case MOS65XX_AM_ABS_IND_LONG:
      SStream_concat(O, " [%s%04x]", prefix, value);
      break;

    case MOS65XX_AM_ZP_IND:
      SStream_concat(O, " (%s%02x)", prefix, value);
      break;

    case MOS65XX_AM_ZP_X_IND:
      SStream_concat(O, " (%s%02x, x)", prefix, value);
      break;

    case MOS65XX_AM_ZP_IND_Y:
      SStream_concat(O, " (%s%02x), y", prefix, value);
      break;

    case MOS65XX_AM_ZP_IND_LONG:
      SStream_concat(O, " [%s%02x]", prefix, value);
      break;

    case MOS65XX_AM_ZP_IND_LONG_Y:
      SStream_concat(O, " [%s%02x], y", prefix, value);
      break;

    case MOS65XX_AM_SR:
      SStream_concat(O, " %s%02x, s", prefix, value);
      break;

    case MOS65XX_AM_SR_IND_Y:
      SStream_concat(O, " (%s%02x, s), y", prefix, value);
      break;

    case MOS65XX_AM_BLOCK:
      SStream_concat(O, " %s%02x, %s%02x",
        prefix, MI->Operands[0].ImmVal,
        prefix, MI->Operands[1].ImmVal);
      break;

    case MOS65XX_AM_ZP_REL:
      value = 3 + (signed char)MI->Operands[1].ImmVal;
      /* BBR0, zp, rel  and BBS0, zp, rel */
      SStream_concat(O, " %s%02x, %s%04x",
        prefix, MI->Operands[0].ImmVal,
        prefix, (MI->address + value) & 0xffff);
      break;

  }
#endif
}

bool MOS65XX_getInstruction(csh ud, const uint8_t *code, size_t code_len,
              MCInst *MI, uint16_t *size, uint64_t address, void *inst_info)
{
  int i;
  unsigned char opcode;
  unsigned char len;
  unsigned cpu_offset = 0;
  int cpu_type = MOS65XX_CPU_TYPE_6502;
  cs_struct* handle = MI->csh;
  mos65xx_info *info = (mos65xx_info *)handle->printer_info;
  OpInfo opinfo;

  if (code_len == 0) {
    *size = 1;
    return false;
  }

  cpu_type = info->cpu_type;
  cpu_offset = cpu_type * 256;

  opcode = code[0];
  opinfo = OpInfoTable[cpu_offset + opcode];
  if (opinfo.ins == MOS65XX_INS_INVALID) {
    *size = 1;
    return false;
  }

  len = opinfo.operand_bytes + 1;

  if (cpu_type == MOS65XX_CPU_TYPE_65816 && opinfo.am == MOS65XX_AM_IMM) {
    switch(opinfo.ins) {
      case MOS65XX_INS_CPX:
      case MOS65XX_INS_CPY:
      case MOS65XX_INS_LDX:
      case MOS65XX_INS_LDY:
        if (info->long_x) ++len;
        break;
      case MOS65XX_INS_ADC:
      case MOS65XX_INS_AND:
      case MOS65XX_INS_BIT:
      case MOS65XX_INS_CMP:
      case MOS65XX_INS_EOR:
      case MOS65XX_INS_LDA:
      case MOS65XX_INS_ORA:
      case MOS65XX_INS_SBC:
        if (info->long_m) ++len;
        break;
      default:
        break;
    }
  }

  if (code_len < len) {
    *size = 1;
    return false;
  }

  MI->address = address;

  MCInst_setOpcode(MI, cpu_offset + opcode);
  MCInst_setOpcodePub(MI, opinfo.ins);

  *size = len;

  /* needed to differentiate relative vs relative long */
  MI->op1_size = len - 1;
  if (opinfo.ins == MOS65XX_INS_NOP) {
    for (i = 1; i < len; ++i)
      MCOperand_CreateImm0(MI, code[i]);
  }

  switch (opinfo.am) {
    case MOS65XX_AM_ZP_REL:
      MCOperand_CreateImm0(MI, code[1]);
      MCOperand_CreateImm0(MI, code[2]);
      break;
    case MOS65XX_AM_BLOCK:
      MCOperand_CreateImm0(MI, code[2]);
      MCOperand_CreateImm0(MI, code[1]);
      break;
    case MOS65XX_AM_IMP:
    case MOS65XX_AM_ACC:
      break;

    case MOS65XX_AM_IMM:
      MI->has_imm = 1;
      MI->imm_size = len - 1;
      /* 65816 immediate is either 1 or 2 bytes */
      /* drop through */
    default:
      if (len == 2)
        MCOperand_CreateImm0(MI, code[1]);
      else if (len == 3)
        MCOperand_CreateImm0(MI, (code[2]<<8) | code[1]);
      else if (len == 4)
        MCOperand_CreateImm0(MI, (code[3]<<16) | (code[2]<<8) | code[1]);
      break;
  }

#ifndef CAPSTONE_DIET
  if (MI->flat_insn->detail) {
    fillDetails(MI, opinfo, cpu_type);
  }
#endif

  return true;
}

const char *MOS65XX_insn_name(csh handle, unsigned int id)
{
#ifdef CAPSTONE_DIET
  return NULL;
#else
  if (id >= ARR_SIZE(InstructionInfoTable)) {
    return NULL;
  }
  return InstructionInfoTable[id].name;
#endif
}

const char* MOS65XX_reg_name(csh handle, unsigned int reg)
{
#ifdef CAPSTONE_DIET
  return NULL;
#else
  if (reg >= ARR_SIZE(RegNames)) {
    return NULL;
  }
  return RegNames[(int)reg];
#endif
}

void MOS65XX_get_insn_id(cs_struct *h, cs_insn *insn, unsigned int id)
{
  /* id is cpu_offset + opcode */
  if (id < ARR_SIZE(OpInfoTable)) {
    insn->id = OpInfoTable[id].ins;
  }
}

const char *MOS65XX_group_name(csh handle, unsigned int id)
{
#ifdef CAPSTONE_DIET
  return NULL;
#else
  if (id >= ARR_SIZE(GroupNames)) {
    return NULL;
  }
  return GroupNames[(int)id];
#endif
}

Coverage Report

Created: 2025-07-01 07:03

Line	Count	Source (jump to first uncovered line)
1		/* Capstone Disassembly Engine */
2		/* MOS65XX Backend by Sebastian Macke <sebastian@macke.de> 2018 */
3
4		#include "capstone/mos65xx.h"
5		#include "MOS65XXDisassembler.h"
6		#include "MOS65XXDisassemblerInternals.h"
7
8		typedef struct OpInfo {
9		mos65xx_insn ins;
10		mos65xx_address_mode am;
11		int operand_bytes;
12		} OpInfo;
13
14		static const struct OpInfo OpInfoTable[]= {
15
16		#include "m6502.inc"
17		#include "m65c02.inc"
18		#include "mw65c02.inc"
19		#include "m65816.inc"
20
21		};
22
23		#ifndef CAPSTONE_DIET
24		static const char* const RegNames[] = {
25		"invalid", "A", "X", "Y", "P", "SP", "DP", "B", "K"
26		};
27
28		static const char* const GroupNames[] = {
29		NULL,
30		"jump",
31		"call",
32		"ret",
33		"int",
34		"iret",
35		"branch_relative"
36		};
37
38		typedef struct InstructionInfo {
39		const char* name;
40		mos65xx_group_type group_type;
41		mos65xx_reg write, read;
42		bool modifies_status;
43		} InstructionInfo;
44
45		static const struct InstructionInfo InstructionInfoTable[]= {
46
47		#include "instruction_info.inc"
48
49		};
50		#endif
51
52		#ifndef CAPSTONE_DIET
53		static void fillDetails(MCInst *MI, struct OpInfo opinfo, int cpu_type)
54	11.1k	{
55	11.1k	int i;
56	11.1k	cs_detail *detail = MI->flat_insn->detail;
57
58	11.1k	InstructionInfo insinfo = InstructionInfoTable[opinfo.ins];
59
60	11.1k	detail->mos65xx.am = opinfo.am;
61	11.1k	detail->mos65xx.modifies_flags = insinfo.modifies_status;
62	11.1k	detail->groups_count = 0;
63	11.1k	detail->regs_read_count = 0;
64	11.1k	detail->regs_write_count = 0;
65	11.1k	detail->mos65xx.op_count = 0;
66
67	11.1k	if (insinfo.group_type != MOS65XX_GRP_INVALID) {
68	1.84k	detail->groups[detail->groups_count] = insinfo.group_type;
69	1.84k	detail->groups_count++;
70	1.84k	}
71
72	11.1k	if (opinfo.am == MOS65XX_AM_REL \|\| opinfo.am == MOS65XX_AM_ZP_REL) {
73	318	detail->groups[detail->groups_count] = MOS65XX_GRP_BRANCH_RELATIVE;
74	318	detail->groups_count++;
75	318	}
76
77	11.1k	if (insinfo.read != MOS65XX_REG_INVALID) {
78	5.23k	detail->regs_read[detail->regs_read_count++] = insinfo.read;
79	5.91k	} else switch(opinfo.am) {
80	540	case MOS65XX_AM_ACC:
81	540	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_ACC;
82	540	break;
83	74	case MOS65XX_AM_ZP_Y:
84	158	case MOS65XX_AM_ZP_IND_Y:
85	227	case MOS65XX_AM_ABS_Y:
86	227	case MOS65XX_AM_ZP_IND_LONG_Y:
87	227	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_Y;
88	227	break;
89
90	224	case MOS65XX_AM_ZP_X:
91	424	case MOS65XX_AM_ZP_X_IND:
92	623	case MOS65XX_AM_ABS_X:
93	623	case MOS65XX_AM_ABS_X_IND:
94	623	case MOS65XX_AM_ABS_LONG_X:
95	623	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_X;
96	623	break;
97
98	0	case MOS65XX_AM_SR:
99	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
100	0	break;
101	0	case MOS65XX_AM_SR_IND_Y:
102	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
103	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_Y;
104	0	break;
105
106	4.52k	default:
107	4.52k	break;
108	5.91k	}
109
110	11.1k	if (insinfo.write != MOS65XX_REG_INVALID) {
111	4.87k	detail->regs_write[detail->regs_write_count++] = insinfo.write;
112	6.27k	} else if (opinfo.am == MOS65XX_AM_ACC) {
113	540	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_ACC;
114	540	}
115
116
117	11.1k	switch(opinfo.ins) {
118	392	case MOS65XX_INS_ADC:
119	2.16k	case MOS65XX_INS_SBC:
120	3.57k	case MOS65XX_INS_ROL:
121	3.78k	case MOS65XX_INS_ROR:
122		/* these read carry flag (and decimal for ADC/SBC) */
123	3.78k	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_P;
124	3.78k	break;
125		/* stack operations */
126	0	case MOS65XX_INS_JSL:
127	212	case MOS65XX_INS_JSR:
128	212	case MOS65XX_INS_PEA:
129	212	case MOS65XX_INS_PEI:
130	212	case MOS65XX_INS_PER:
131	450	case MOS65XX_INS_PHA:
132	450	case MOS65XX_INS_PHB:
133	450	case MOS65XX_INS_PHD:
134	450	case MOS65XX_INS_PHK:
135	661	case MOS65XX_INS_PHP:
136	661	case MOS65XX_INS_PHX:
137	661	case MOS65XX_INS_PHY:
138	946	case MOS65XX_INS_PLA:
139	946	case MOS65XX_INS_PLB:
140	946	case MOS65XX_INS_PLD:
141	1.17k	case MOS65XX_INS_PLP:
142	1.17k	case MOS65XX_INS_PLX:
143	1.17k	case MOS65XX_INS_PLY:
144	1.40k	case MOS65XX_INS_RTI:
145	1.40k	case MOS65XX_INS_RTL:
146	1.61k	case MOS65XX_INS_RTS:
147	1.61k	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
148	1.61k	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_SP;
149	1.61k	break;
150	5.74k	default:
151	5.74k	break;
152	11.1k	}
153
154	11.1k	if (cpu_type == MOS65XX_CPU_TYPE_65816) {
155	0	switch (opinfo.am) {
156	0	case MOS65XX_AM_ZP:
157	0	case MOS65XX_AM_ZP_X:
158	0	case MOS65XX_AM_ZP_Y:
159	0	case MOS65XX_AM_ZP_IND:
160	0	case MOS65XX_AM_ZP_X_IND:
161	0	case MOS65XX_AM_ZP_IND_Y:
162	0	case MOS65XX_AM_ZP_IND_LONG:
163	0	case MOS65XX_AM_ZP_IND_LONG_Y:
164	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_DP;
165	0	break;
166	0	case MOS65XX_AM_BLOCK:
167	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_ACC;
168	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_X;
169	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_Y;
170	0	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_ACC;
171	0	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_X;
172	0	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_Y;
173	0	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_B;
174	0	break;
175	0	default:
176	0	break;
177	0	}
178
179	0	switch (opinfo.am) {
180	0	case MOS65XX_AM_ZP_IND:
181	0	case MOS65XX_AM_ZP_X_IND:
182	0	case MOS65XX_AM_ZP_IND_Y:
183	0	case MOS65XX_AM_ABS:
184	0	case MOS65XX_AM_ABS_X:
185	0	case MOS65XX_AM_ABS_Y:
186	0	case MOS65XX_AM_ABS_X_IND:
187		/* these depend on the databank to generate a 24-bit address */
188		/* exceptions: PEA, PEI, and JMP (abs) */
189	0	if (opinfo.ins == MOS65XX_INS_PEI \|\| opinfo.ins == MOS65XX_INS_PEA) break;
190	0	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_B;
191	0	break;
192	0	default:
193	0	break;
194	0	}
195	0	}
196
197	11.1k	if (insinfo.modifies_status) {
198	8.60k	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_P;
199	8.60k	}
200
201	11.1k	switch(opinfo.am) {
202	1.89k	case MOS65XX_AM_IMP:
203	1.89k	break;
204	61	case MOS65XX_AM_IMM:
205	61	detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_IMM;
206	61	detail->mos65xx.operands[detail->mos65xx.op_count].imm = MI->Operands[0].ImmVal;
207	61	detail->mos65xx.op_count++;
208	61	break;
209	540	case MOS65XX_AM_ACC:
210	540	detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_REG;
211	540	detail->mos65xx.operands[detail->mos65xx.op_count].reg = MOS65XX_REG_ACC;
212	540	detail->mos65xx.op_count++;
213	540	break;
214	318	case MOS65XX_AM_REL: {
215	318	int value = MI->Operands[0].ImmVal;
216	318	if (MI->op1_size == 1)
217	318	value = 2 + (signed char)value;
218	0	else
219	0	value = 3 + (signed short)value;
220	318	detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_MEM;
221	318	detail->mos65xx.operands[detail->mos65xx.op_count].mem = (MI->address + value) & 0xffff;
222	318	detail->mos65xx.op_count++;
223	318	break;
224	0	}
225	0	case MOS65XX_AM_ZP_REL: {
226	0	int value = 3 + (signed char)MI->Operands[1].ImmVal;
227		/* BBR0, zp, rel and BBS0, zp, rel */
228	0	detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_MEM;
229	0	detail->mos65xx.operands[detail->mos65xx.op_count].mem = MI->Operands[0].ImmVal;
230	0	detail->mos65xx.operands[detail->mos65xx.op_count+1].type = MOS65XX_OP_MEM;
231	0	detail->mos65xx.operands[detail->mos65xx.op_count+1].mem = (MI->address + value) & 0xffff;
232	0	detail->mos65xx.op_count+=2;
233	0	break;
234	0	}
235	8.33k	default:
236	16.6k	for (i = 0; i < MI->size; ++i) {
237	8.33k	detail->mos65xx.operands[detail->mos65xx.op_count].type = MOS65XX_OP_MEM;
238	8.33k	detail->mos65xx.operands[detail->mos65xx.op_count].mem = MI->Operands[i].ImmVal;
239	8.33k	detail->mos65xx.op_count++;
240	8.33k	}
241	8.33k	break;
242	11.1k	}
243	11.1k	}
244		#endif
245
246		void MOS65XX_printInst(MCInst MI, struct SStream O, void *PrinterInfo)
247	11.1k	{
248	11.1k	#ifndef CAPSTONE_DIET
249	11.1k	unsigned int value;
250	11.1k	unsigned opcode = MCInst_getOpcode(MI);
251	11.1k	mos65xx_info info = (mos65xx_info )PrinterInfo;
252
253	11.1k	OpInfo opinfo = OpInfoTable[opcode];
254
255	11.1k	const char *prefix = info->hex_prefix ? info->hex_prefix : "0x";
256
257	11.1k	SStream_concat0(O, InstructionInfoTable[opinfo.ins].name);
258	11.1k	switch (opinfo.ins) {
259		/* special case - bit included as part of the instruction name */
260	0	case MOS65XX_INS_BBR:
261	0	case MOS65XX_INS_BBS:
262	0	case MOS65XX_INS_RMB:
263	0	case MOS65XX_INS_SMB:
264	0	SStream_concat(O, "%d", (opcode >> 4) & 0x07);
265	0	break;
266	11.1k	default:
267	11.1k	break;
268	11.1k	}
269
270	11.1k	value = MI->Operands[0].ImmVal;
271
272	11.1k	switch (opinfo.am) {
273	0	default:
274	0	break;
275
276	1.89k	case MOS65XX_AM_IMP:
277	1.89k	break;
278
279	540	case MOS65XX_AM_ACC:
280	540	SStream_concat0(O, " a");
281	540	break;
282
283	61	case MOS65XX_AM_IMM:
284	61	if (MI->imm_size == 1)
285	61	SStream_concat(O, " #%s%02x", prefix, value);
286	0	else
287	0	SStream_concat(O, " #%s%04x", prefix, value);
288	61	break;
289
290	1.30k	case MOS65XX_AM_ZP:
291	1.30k	SStream_concat(O, " %s%02x", prefix, value);
292	1.30k	break;
293
294	3.00k	case MOS65XX_AM_ABS:
295	3.00k	SStream_concat(O, " %s%04x", prefix, value);
296	3.00k	break;
297
298	0	case MOS65XX_AM_ABS_LONG_X:
299	0	SStream_concat(O, " %s%06x, x", prefix, value);
300	0	break;
301
302	837	case MOS65XX_AM_INT:
303	837	SStream_concat(O, " %s%02x", prefix, value);
304	837	break;
305
306	523	case MOS65XX_AM_ABS_X:
307	523	SStream_concat(O, " %s%04x, x", prefix, value);
308	523	break;
309
310	227	case MOS65XX_AM_ABS_Y:
311	227	SStream_concat(O, " %s%04x, y", prefix, value);
312	227	break;
313
314	0	case MOS65XX_AM_ABS_LONG:
315	0	SStream_concat(O, " %s%06x", prefix, value);
316	0	break;
317
318	445	case MOS65XX_AM_ZP_X:
319	445	SStream_concat(O, " %s%02x, x", prefix, value);
320	445	break;
321
322	213	case MOS65XX_AM_ZP_Y:
323	213	SStream_concat(O, " %s%02x, y", prefix, value);
324	213	break;
325
326	318	case MOS65XX_AM_REL:
327	318	if (MI->op1_size == 1)
328	318	value = 2 + (signed char)value;
329	0	else
330	0	value = 3 + (signed short)value;
331
332	318	SStream_concat(O, " %s%04x", prefix,
333	318	(MI->address + value) & 0xffff);
334	318	break;
335
336	39	case MOS65XX_AM_ABS_IND:
337	39	SStream_concat(O, " (%s%04x)", prefix, value);
338	39	break;
339
340	0	case MOS65XX_AM_ABS_X_IND:
341	0	SStream_concat(O, " (%s%04x, x)", prefix, value);
342	0	break;
343
344	0	case MOS65XX_AM_ABS_IND_LONG:
345	0	SStream_concat(O, " [%s%04x]", prefix, value);
346	0	break;
347
348	0	case MOS65XX_AM_ZP_IND:
349	0	SStream_concat(O, " (%s%02x)", prefix, value);
350	0	break;
351
352	269	case MOS65XX_AM_ZP_X_IND:
353	269	SStream_concat(O, " (%s%02x, x)", prefix, value);
354	269	break;
355
356	1.47k	case MOS65XX_AM_ZP_IND_Y:
357	1.47k	SStream_concat(O, " (%s%02x), y", prefix, value);
358	1.47k	break;
359
360	0	case MOS65XX_AM_ZP_IND_LONG:
361	0	SStream_concat(O, " [%s%02x]", prefix, value);
362	0	break;
363
364	0	case MOS65XX_AM_ZP_IND_LONG_Y:
365	0	SStream_concat(O, " [%s%02x], y", prefix, value);
366	0	break;
367
368	0	case MOS65XX_AM_SR:
369	0	SStream_concat(O, " %s%02x, s", prefix, value);
370	0	break;
371
372	0	case MOS65XX_AM_SR_IND_Y:
373	0	SStream_concat(O, " (%s%02x, s), y", prefix, value);
374	0	break;
375
376	0	case MOS65XX_AM_BLOCK:
377	0	SStream_concat(O, " %s%02x, %s%02x",
378	0	prefix, MI->Operands[0].ImmVal,
379	0	prefix, MI->Operands[1].ImmVal);
380	0	break;
381
382	0	case MOS65XX_AM_ZP_REL:
383	0	value = 3 + (signed char)MI->Operands[1].ImmVal;
384		/* BBR0, zp, rel and BBS0, zp, rel */
385	0	SStream_concat(O, " %s%02x, %s%04x",
386	0	prefix, MI->Operands[0].ImmVal,
387	0	prefix, (MI->address + value) & 0xffff);
388	0	break;
389
390	11.1k	}
391	11.1k	#endif
392	11.1k	}
393
394		bool MOS65XX_getInstruction(csh ud, const uint8_t *code, size_t code_len,
395		MCInst MI, uint16_t size, uint64_t address, void *inst_info)
396	11.2k	{
397	11.2k	int i;
398	11.2k	unsigned char opcode;
399	11.2k	unsigned char len;
400	11.2k	unsigned cpu_offset = 0;
401	11.2k	int cpu_type = MOS65XX_CPU_TYPE_6502;
402	11.2k	cs_struct* handle = MI->csh;
403	11.2k	mos65xx_info info = (mos65xx_info )handle->printer_info;
404	11.2k	OpInfo opinfo;
405
406	11.2k	if (code_len == 0) {
407	0	*size = 1;
408	0	return false;
409	0	}
410
411	11.2k	cpu_type = info->cpu_type;
412	11.2k	cpu_offset = cpu_type * 256;
413
414	11.2k	opcode = code[0];
415	11.2k	opinfo = OpInfoTable[cpu_offset + opcode];
416	11.2k	if (opinfo.ins == MOS65XX_INS_INVALID) {
417	34	*size = 1;
418	34	return false;
419	34	}
420
421	11.1k	len = opinfo.operand_bytes + 1;
422
423	11.1k	if (cpu_type == MOS65XX_CPU_TYPE_65816 && opinfo.am == MOS65XX_AM_IMM) {
424	0	switch(opinfo.ins) {
425	0	case MOS65XX_INS_CPX:
426	0	case MOS65XX_INS_CPY:
427	0	case MOS65XX_INS_LDX:
428	0	case MOS65XX_INS_LDY:
429	0	if (info->long_x) ++len;
430	0	break;
431	0	case MOS65XX_INS_ADC:
432	0	case MOS65XX_INS_AND:
433	0	case MOS65XX_INS_BIT:
434	0	case MOS65XX_INS_CMP:
435	0	case MOS65XX_INS_EOR:
436	0	case MOS65XX_INS_LDA:
437	0	case MOS65XX_INS_ORA:
438	0	case MOS65XX_INS_SBC:
439	0	if (info->long_m) ++len;
440	0	break;
441	0	default:
442	0	break;
443	0	}
444	0	}
445
446	11.1k	if (code_len < len) {
447	27	*size = 1;
448	27	return false;
449	27	}
450
451	11.1k	MI->address = address;
452
453	11.1k	MCInst_setOpcode(MI, cpu_offset + opcode);
454	11.1k	MCInst_setOpcodePub(MI, opinfo.ins);
455
456	11.1k	*size = len;
457
458		/* needed to differentiate relative vs relative long */
459	11.1k	MI->op1_size = len - 1;
460	11.1k	if (opinfo.ins == MOS65XX_INS_NOP) {
461	198	for (i = 1; i < len; ++i)
462	0	MCOperand_CreateImm0(MI, code[i]);
463	198	}
464
465	11.1k	switch (opinfo.am) {
466	0	case MOS65XX_AM_ZP_REL:
467	0	MCOperand_CreateImm0(MI, code[1]);
468	0	MCOperand_CreateImm0(MI, code[2]);
469	0	break;
470	0	case MOS65XX_AM_BLOCK:
471	0	MCOperand_CreateImm0(MI, code[2]);
472	0	MCOperand_CreateImm0(MI, code[1]);
473	0	break;
474	1.89k	case MOS65XX_AM_IMP:
475	2.43k	case MOS65XX_AM_ACC:
476	2.43k	break;
477
478	61	case MOS65XX_AM_IMM:
479	61	MI->has_imm = 1;
480	61	MI->imm_size = len - 1;
481		/* 65816 immediate is either 1 or 2 bytes */
482		/* drop through */
483	8.71k	default:
484	8.71k	if (len == 2)
485	4.92k	MCOperand_CreateImm0(MI, code[1]);
486	3.78k	else if (len == 3)
487	3.78k	MCOperand_CreateImm0(MI, (code[2]<<8) \| code[1]);
488	0	else if (len == 4)
489	0	MCOperand_CreateImm0(MI, (code[3]<<16) \| (code[2]<<8) \| code[1]);
490	8.71k	break;
491	11.1k	}
492
493	11.1k	#ifndef CAPSTONE_DIET
494	11.1k	if (MI->flat_insn->detail) {
495	11.1k	fillDetails(MI, opinfo, cpu_type);
496	11.1k	}
497	11.1k	#endif
498
499	11.1k	return true;
500	11.1k	}
501
502		const char *MOS65XX_insn_name(csh handle, unsigned int id)
503	11.1k	{
504		#ifdef CAPSTONE_DIET
505		return NULL;
506		#else
507	11.1k	if (id >= ARR_SIZE(InstructionInfoTable)) {
508	0	return NULL;
509	0	}
510	11.1k	return InstructionInfoTable[id].name;
511	11.1k	#endif
512	11.1k	}
513
514		const char* MOS65XX_reg_name(csh handle, unsigned int reg)
515	27.6k	{
516		#ifdef CAPSTONE_DIET
517		return NULL;
518		#else
519	27.6k	if (reg >= ARR_SIZE(RegNames)) {
520	0	return NULL;
521	0	}
522	27.6k	return RegNames[(int)reg];
523	27.6k	#endif
524	27.6k	}
525
526		void MOS65XX_get_insn_id(cs_struct h, cs_insn insn, unsigned int id)
527	11.1k	{
528		/* id is cpu_offset + opcode */
529	11.1k	if (id < ARR_SIZE(OpInfoTable)) {
530	11.1k	insn->id = OpInfoTable[id].ins;
531	11.1k	}
532	11.1k	}
533
534		const char *MOS65XX_group_name(csh handle, unsigned int id)
535	2.16k	{
536		#ifdef CAPSTONE_DIET
537		return NULL;
538		#else
539	2.16k	if (id >= ARR_SIZE(GroupNames)) {
540	0	return NULL;
541	0	}
542	2.16k	return GroupNames[(int)id];
543	2.16k	#endif
544	2.16k	}