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

Source
/* 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: 2025-11-09 07:00

Line	Count	Source
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[] = { "invalid", "A", "X", "Y", "P",
25		"SP", "DP", "B", "K" };
26
27		static const char *const GroupNames[] = {
28		NULL, "jump", "call", "ret", "int", "iret", "branch_relative"
29		};
30
31		typedef struct InstructionInfo {
32		const char *name;
33		mos65xx_group_type group_type;
34		mos65xx_reg write, read;
35		bool modifies_status;
36		} InstructionInfo;
37
38		static const struct InstructionInfo InstructionInfoTable[] = {
39
40		#include "instruction_info.inc"
41
42		};
43		#endif
44
45		#ifndef CAPSTONE_DIET
46		static void fillDetails(MCInst *MI, struct OpInfo opinfo, int cpu_type)
47	565	{
48	565	int i;
49	565	cs_detail *detail = MI->flat_insn->detail;
50
51	565	InstructionInfo insinfo = InstructionInfoTable[opinfo.ins];
52
53	565	detail->mos65xx.am = opinfo.am;
54	565	detail->mos65xx.modifies_flags = insinfo.modifies_status;
55	565	detail->groups_count = 0;
56	565	detail->regs_read_count = 0;
57	565	detail->regs_write_count = 0;
58	565	detail->mos65xx.op_count = 0;
59
60	565	if (insinfo.group_type != MOS65XX_GRP_INVALID) {
61	51	detail->groups[detail->groups_count] = insinfo.group_type;
62	51	detail->groups_count++;
63	51	}
64
65	565	if (opinfo.am == MOS65XX_AM_REL \|\| opinfo.am == MOS65XX_AM_ZP_REL) {
66	5	detail->groups[detail->groups_count] =
67	5	MOS65XX_GRP_BRANCH_RELATIVE;
68	5	detail->groups_count++;
69	5	}
70
71	565	if (insinfo.read != MOS65XX_REG_INVALID) {
72	374	detail->regs_read[detail->regs_read_count++] = insinfo.read;
73	374	} else
74	191	switch (opinfo.am) {
75	42	case MOS65XX_AM_ACC:
76	42	detail->regs_read[detail->regs_read_count++] =
77	42	MOS65XX_REG_ACC;
78	42	break;
79	0	case MOS65XX_AM_ZP_Y:
80	0	case MOS65XX_AM_ZP_IND_Y:
81	19	case MOS65XX_AM_ABS_Y:
82	19	case MOS65XX_AM_ZP_IND_LONG_Y:
83	19	detail->regs_read[detail->regs_read_count++] =
84	19	MOS65XX_REG_Y;
85	19	break;
86
87	0	case MOS65XX_AM_ZP_X:
88	0	case MOS65XX_AM_ZP_X_IND:
89	42	case MOS65XX_AM_ABS_X:
90	42	case MOS65XX_AM_ABS_X_IND:
91	42	case MOS65XX_AM_ABS_LONG_X:
92	42	detail->regs_read[detail->regs_read_count++] =
93	42	MOS65XX_REG_X;
94	42	break;
95
96	0	case MOS65XX_AM_SR:
97	0	detail->regs_read[detail->regs_read_count++] =
98	0	MOS65XX_REG_SP;
99	0	break;
100	0	case MOS65XX_AM_SR_IND_Y:
101	0	detail->regs_read[detail->regs_read_count++] =
102	0	MOS65XX_REG_SP;
103	0	detail->regs_read[detail->regs_read_count++] =
104	0	MOS65XX_REG_Y;
105	0	break;
106
107	88	default:
108	88	break;
109	191	}
110
111	565	if (insinfo.write != MOS65XX_REG_INVALID) {
112	233	detail->regs_write[detail->regs_write_count++] = insinfo.write;
113	332	} else if (opinfo.am == MOS65XX_AM_ACC) {
114	42	detail->regs_write[detail->regs_write_count++] =
115	42	MOS65XX_REG_ACC;
116	42	}
117
118	565	switch (opinfo.ins) {
119	128	case MOS65XX_INS_ADC:
120	142	case MOS65XX_INS_SBC:
121	143	case MOS65XX_INS_ROL:
122	193	case MOS65XX_INS_ROR:
123		/* these read carry flag (and decimal for ADC/SBC) */
124	193	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_P;
125	193	break;
126		/* stack operations */
127	0	case MOS65XX_INS_JSL:
128	9	case MOS65XX_INS_JSR:
129	9	case MOS65XX_INS_PEA:
130	9	case MOS65XX_INS_PEI:
131	9	case MOS65XX_INS_PER:
132	21	case MOS65XX_INS_PHA:
133	21	case MOS65XX_INS_PHB:
134	21	case MOS65XX_INS_PHD:
135	21	case MOS65XX_INS_PHK:
136	21	case MOS65XX_INS_PHP:
137	21	case MOS65XX_INS_PHX:
138	21	case MOS65XX_INS_PHY:
139	42	case MOS65XX_INS_PLA:
140	42	case MOS65XX_INS_PLB:
141	42	case MOS65XX_INS_PLD:
142	50	case MOS65XX_INS_PLP:
143	50	case MOS65XX_INS_PLX:
144	50	case MOS65XX_INS_PLY:
145	50	case MOS65XX_INS_RTI:
146	50	case MOS65XX_INS_RTL:
147	65	case MOS65XX_INS_RTS:
148	65	detail->regs_read[detail->regs_read_count++] = MOS65XX_REG_SP;
149	65	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_SP;
150	65	break;
151	307	default:
152	307	break;
153	565	}
154
155	565	if (cpu_type == MOS65XX_CPU_TYPE_65816) {
156	0	switch (opinfo.am) {
157	0	case MOS65XX_AM_ZP:
158	0	case MOS65XX_AM_ZP_X:
159	0	case MOS65XX_AM_ZP_Y:
160	0	case MOS65XX_AM_ZP_IND:
161	0	case MOS65XX_AM_ZP_X_IND:
162	0	case MOS65XX_AM_ZP_IND_Y:
163	0	case MOS65XX_AM_ZP_IND_LONG:
164	0	case MOS65XX_AM_ZP_IND_LONG_Y:
165	0	detail->regs_read[detail->regs_read_count++] =
166	0	MOS65XX_REG_DP;
167	0	break;
168	0	case MOS65XX_AM_BLOCK:
169	0	detail->regs_read[detail->regs_read_count++] =
170	0	MOS65XX_REG_ACC;
171	0	detail->regs_read[detail->regs_read_count++] =
172	0	MOS65XX_REG_X;
173	0	detail->regs_read[detail->regs_read_count++] =
174	0	MOS65XX_REG_Y;
175	0	detail->regs_write[detail->regs_write_count++] =
176	0	MOS65XX_REG_ACC;
177	0	detail->regs_write[detail->regs_write_count++] =
178	0	MOS65XX_REG_X;
179	0	detail->regs_write[detail->regs_write_count++] =
180	0	MOS65XX_REG_Y;
181	0	detail->regs_write[detail->regs_write_count++] =
182	0	MOS65XX_REG_B;
183	0	break;
184	0	default:
185	0	break;
186	0	}
187
188	0	switch (opinfo.am) {
189	0	case MOS65XX_AM_ZP_IND:
190	0	case MOS65XX_AM_ZP_X_IND:
191	0	case MOS65XX_AM_ZP_IND_Y:
192	0	case MOS65XX_AM_ABS:
193	0	case MOS65XX_AM_ABS_X:
194	0	case MOS65XX_AM_ABS_Y:
195	0	case MOS65XX_AM_ABS_X_IND:
196		/* these depend on the databank to generate a 24-bit address */
197		/* exceptions: PEA, PEI, and JMP (abs) */
198	0	if (opinfo.ins == MOS65XX_INS_PEI \|\|
199	0	opinfo.ins == MOS65XX_INS_PEA)
200	0	break;
201	0	detail->regs_read[detail->regs_read_count++] =
202	0	MOS65XX_REG_B;
203	0	break;
204	0	default:
205	0	break;
206	0	}
207	0	}
208
209	565	if (insinfo.modifies_status) {
210	463	detail->regs_write[detail->regs_write_count++] = MOS65XX_REG_P;
211	463	}
212
213	565	switch (opinfo.am) {
214	70	case MOS65XX_AM_IMP:
215	70	break;
216	133	case MOS65XX_AM_IMM:
217	133	detail->mos65xx.operands[detail->mos65xx.op_count].type =
218	133	MOS65XX_OP_IMM;
219	133	detail->mos65xx.operands[detail->mos65xx.op_count].imm =
220	133	MI->Operands[0].ImmVal;
221	133	detail->mos65xx.op_count++;
222	133	break;
223	42	case MOS65XX_AM_ACC:
224	42	detail->mos65xx.operands[detail->mos65xx.op_count].type =
225	42	MOS65XX_OP_REG;
226	42	detail->mos65xx.operands[detail->mos65xx.op_count].reg =
227	42	MOS65XX_REG_ACC;
228	42	detail->mos65xx.op_count++;
229	42	break;
230	5	case MOS65XX_AM_REL: {
231	5	int value = MI->Operands[0].ImmVal;
232	5	if (MI->op1_size == 1)
233	5	value = 2 + (signed char)value;
234	0	else
235	0	value = 3 + (signed short)value;
236	5	detail->mos65xx.operands[detail->mos65xx.op_count].type =
237	5	MOS65XX_OP_MEM;
238	5	detail->mos65xx.operands[detail->mos65xx.op_count].mem =
239	5	(MI->address + value) & 0xffff;
240	5	detail->mos65xx.op_count++;
241	5	break;
242	0	}
243	0	case MOS65XX_AM_ZP_REL: {
244	0	int value = 3 + (signed char)MI->Operands[1].ImmVal;
245		/* BBR0, zp, rel and BBS0, zp, rel */
246	0	detail->mos65xx.operands[detail->mos65xx.op_count].type =
247	0	MOS65XX_OP_MEM;
248	0	detail->mos65xx.operands[detail->mos65xx.op_count].mem =
249	0	MI->Operands[0].ImmVal;
250	0	detail->mos65xx.operands[detail->mos65xx.op_count + 1].type =
251	0	MOS65XX_OP_MEM;
252	0	detail->mos65xx.operands[detail->mos65xx.op_count + 1].mem =
253	0	(MI->address + value) & 0xffff;
254	0	detail->mos65xx.op_count += 2;
255	0	break;
256	0	}
257	315	default:
258	630	for (i = 0; i < MI->size; ++i) {
259	315	detail->mos65xx.operands[detail->mos65xx.op_count].type =
260	315	MOS65XX_OP_MEM;
261	315	detail->mos65xx.operands[detail->mos65xx.op_count].mem =
262	315	MI->Operands[i].ImmVal;
263	315	detail->mos65xx.op_count++;
264	315	}
265	315	break;
266	565	}
267	565	}
268		#endif
269
270		void MOS65XX_printInst(MCInst MI, struct SStream O, void *PrinterInfo)
271	565	{
272	565	#ifndef CAPSTONE_DIET
273	565	unsigned int value;
274	565	unsigned opcode = MCInst_getOpcode(MI);
275	565	mos65xx_info info = (mos65xx_info )PrinterInfo;
276
277	565	OpInfo opinfo = OpInfoTable[opcode];
278
279	565	const char *prefix = info->hex_prefix ? info->hex_prefix : "0x";
280
281	565	SStream_concat0(O, InstructionInfoTable[opinfo.ins].name);
282	565	switch (opinfo.ins) {
283		/* special case - bit included as part of the instruction name */
284	0	case MOS65XX_INS_BBR:
285	0	case MOS65XX_INS_BBS:
286	0	case MOS65XX_INS_RMB:
287	0	case MOS65XX_INS_SMB:
288	0	SStream_concat(O, "%d", (opcode >> 4) & 0x07);
289	0	break;
290	565	default:
291	565	break;
292	565	}
293
294	565	value = MI->Operands[0].ImmVal;
295
296	565	switch (opinfo.am) {
297	0	default:
298	0	break;
299
300	70	case MOS65XX_AM_IMP:
301	70	break;
302
303	42	case MOS65XX_AM_ACC:
304	42	SStream_concat0(O, " a");
305	42	break;
306
307	133	case MOS65XX_AM_IMM:
308	133	if (MI->imm_size == 1)
309	133	SStream_concat(O, " #%s%02x", prefix, value);
310	0	else
311	0	SStream_concat(O, " #%s%04x", prefix, value);
312	133	break;
313
314	49	case MOS65XX_AM_ZP:
315	49	SStream_concat(O, " %s%02x", prefix, value);
316	49	break;
317
318	12	case MOS65XX_AM_ABS:
319	12	SStream_concat(O, " %s%04x", prefix, value);
320	12	break;
321
322	0	case MOS65XX_AM_ABS_LONG_X:
323	0	SStream_concat(O, " %s%06x, x", prefix, value);
324	0	break;
325
326	21	case MOS65XX_AM_INT:
327	21	SStream_concat(O, " %s%02x", prefix, value);
328	21	break;
329
330	43	case MOS65XX_AM_ABS_X:
331	43	SStream_concat(O, " %s%04x, x", prefix, value);
332	43	break;
333
334	20	case MOS65XX_AM_ABS_Y:
335	20	SStream_concat(O, " %s%04x, y", prefix, value);
336	20	break;
337
338	0	case MOS65XX_AM_ABS_LONG:
339	0	SStream_concat(O, " %s%06x", prefix, value);
340	0	break;
341
342	33	case MOS65XX_AM_ZP_X:
343	33	SStream_concat(O, " %s%02x, x", prefix, value);
344	33	break;
345
346	1	case MOS65XX_AM_ZP_Y:
347	1	SStream_concat(O, " %s%02x, y", prefix, value);
348	1	break;
349
350	5	case MOS65XX_AM_REL:
351	5	if (MI->op1_size == 1)
352	5	value = 2 + (signed char)value;
353	0	else
354	0	value = 3 + (signed short)value;
355
356	5	SStream_concat(O, " %s%04x", prefix,
357	5	(MI->address + value) & 0xffff);
358	5	break;
359
360	1	case MOS65XX_AM_ABS_IND:
361	1	SStream_concat(O, " (%s%04x)", prefix, value);
362	1	break;
363
364	0	case MOS65XX_AM_ABS_X_IND:
365	0	SStream_concat(O, " (%s%04x, x)", prefix, value);
366	0	break;
367
368	0	case MOS65XX_AM_ABS_IND_LONG:
369	0	SStream_concat(O, " [%s%04x]", prefix, value);
370	0	break;
371
372	0	case MOS65XX_AM_ZP_IND:
373	0	SStream_concat(O, " (%s%02x)", prefix, value);
374	0	break;
375
376	3	case MOS65XX_AM_ZP_X_IND:
377	3	SStream_concat(O, " (%s%02x, x)", prefix, value);
378	3	break;
379
380	132	case MOS65XX_AM_ZP_IND_Y:
381	132	SStream_concat(O, " (%s%02x), y", prefix, value);
382	132	break;
383
384	0	case MOS65XX_AM_ZP_IND_LONG:
385	0	SStream_concat(O, " [%s%02x]", prefix, value);
386	0	break;
387
388	0	case MOS65XX_AM_ZP_IND_LONG_Y:
389	0	SStream_concat(O, " [%s%02x], y", prefix, value);
390	0	break;
391
392	0	case MOS65XX_AM_SR:
393	0	SStream_concat(O, " %s%02x, s", prefix, value);
394	0	break;
395
396	0	case MOS65XX_AM_SR_IND_Y:
397	0	SStream_concat(O, " (%s%02x, s), y", prefix, value);
398	0	break;
399
400	0	case MOS65XX_AM_BLOCK:
401	0	SStream_concat(O, " %s%02x, %s%02x", prefix,
402	0	MI->Operands[0].ImmVal, prefix,
403	0	MI->Operands[1].ImmVal);
404	0	break;
405
406	0	case MOS65XX_AM_ZP_REL:
407	0	value = 3 + (signed char)MI->Operands[1].ImmVal;
408		/* BBR0, zp, rel and BBS0, zp, rel */
409	0	SStream_concat(O, " %s%02x, %s%04x", prefix,
410	0	MI->Operands[0].ImmVal, prefix,
411	0	(MI->address + value) & 0xffff);
412	0	break;
413	565	}
414	565	#endif
415	565	}
416
417		bool MOS65XX_getInstruction(csh ud, const uint8_t *code, size_t code_len,
418		MCInst MI, uint16_t size, uint64_t address,
419		void *inst_info)
420	568	{
421	568	int i;
422	568	unsigned char opcode;
423	568	unsigned char len;
424	568	unsigned cpu_offset = 0;
425	568	int cpu_type = MOS65XX_CPU_TYPE_6502;
426	568	cs_struct *handle = MI->csh;
427	568	mos65xx_info info = (mos65xx_info )handle->printer_info;
428	568	OpInfo opinfo;
429
430	568	if (code_len == 0) {
431	0	*size = 1;
432	0	return false;
433	0	}
434
435	568	cpu_type = info->cpu_type;
436	568	cpu_offset = cpu_type * 256;
437
438	568	opcode = code[0];
439	568	opinfo = OpInfoTable[cpu_offset + opcode];
440	568	if (opinfo.ins == MOS65XX_INS_INVALID) {
441	3	*size = 1;
442	3	return false;
443	3	}
444
445	565	len = opinfo.operand_bytes + 1;
446
447	565	if (cpu_type == MOS65XX_CPU_TYPE_65816 && opinfo.am == MOS65XX_AM_IMM) {
448	0	switch (opinfo.ins) {
449	0	case MOS65XX_INS_CPX:
450	0	case MOS65XX_INS_CPY:
451	0	case MOS65XX_INS_LDX:
452	0	case MOS65XX_INS_LDY:
453	0	if (info->long_x)
454	0	++len;
455	0	break;
456	0	case MOS65XX_INS_ADC:
457	0	case MOS65XX_INS_AND:
458	0	case MOS65XX_INS_BIT:
459	0	case MOS65XX_INS_CMP:
460	0	case MOS65XX_INS_EOR:
461	0	case MOS65XX_INS_LDA:
462	0	case MOS65XX_INS_ORA:
463	0	case MOS65XX_INS_SBC:
464	0	if (info->long_m)
465	0	++len;
466	0	break;
467	0	default:
468	0	break;
469	0	}
470	0	}
471
472	565	if (code_len < len) {
473	0	*size = 1;
474	0	return false;
475	0	}
476
477	565	MI->address = address;
478
479	565	MCInst_setOpcode(MI, cpu_offset + opcode);
480	565	MCInst_setOpcodePub(MI, opinfo.ins);
481
482	565	*size = len;
483
484		/* needed to differentiate relative vs relative long */
485	565	MI->op1_size = len - 1;
486	565	if (opinfo.ins == MOS65XX_INS_NOP) {
487	4	for (i = 1; i < len; ++i)
488	0	MCOperand_CreateImm0(MI, code[i]);
489	4	}
490
491	565	switch (opinfo.am) {
492	0	case MOS65XX_AM_ZP_REL:
493	0	MCOperand_CreateImm0(MI, code[1]);
494	0	MCOperand_CreateImm0(MI, code[2]);
495	0	break;
496	0	case MOS65XX_AM_BLOCK:
497	0	MCOperand_CreateImm0(MI, code[2]);
498	0	MCOperand_CreateImm0(MI, code[1]);
499	0	break;
500	70	case MOS65XX_AM_IMP:
501	112	case MOS65XX_AM_ACC:
502	112	break;
503
504	133	case MOS65XX_AM_IMM:
505	133	MI->has_imm = 1;
506	133	MI->imm_size = len - 1;
507		/* 65816 immediate is either 1 or 2 bytes */
508		/* drop through */
509	453	default:
510	453	if (len == 2)
511	377	MCOperand_CreateImm0(MI, code[1]);
512	76	else if (len == 3)
513	76	MCOperand_CreateImm0(MI, (code[2] << 8) \| code[1]);
514	0	else if (len == 4)
515	0	MCOperand_CreateImm0(
516	0	MI, (code[3] << 16) \| (code[2] << 8) \| code[1]);
517	453	break;
518	565	}
519
520	565	#ifndef CAPSTONE_DIET
521	565	if (MI->flat_insn->detail) {
522	565	fillDetails(MI, opinfo, cpu_type);
523	565	}
524	565	#endif
525
526	565	return true;
527	565	}
528
529		const char *MOS65XX_insn_name(csh handle, unsigned int id)
530	565	{
531		#ifdef CAPSTONE_DIET
532		return NULL;
533		#else
534	565	if (id >= ARR_SIZE(InstructionInfoTable)) {
535	0	return NULL;
536	0	}
537	565	return InstructionInfoTable[id].name;
538	565	#endif
539	565	}
540
541		const char *MOS65XX_reg_name(csh handle, unsigned int reg)
542	1.53k	{
543		#ifdef CAPSTONE_DIET
544		return NULL;
545		#else
546	1.53k	if (reg >= ARR_SIZE(RegNames)) {
547	0	return NULL;
548	0	}
549	1.53k	return RegNames[(int)reg];
550	1.53k	#endif
551	1.53k	}
552
553		void MOS65XX_get_insn_id(cs_struct h, cs_insn insn, unsigned int id)
554	565	{
555		/* id is cpu_offset + opcode */
556	565	if (id < ARR_SIZE(OpInfoTable)) {
557	565	insn->id = OpInfoTable[id].ins;
558	565	}
559	565	}
560
561		const char *MOS65XX_group_name(csh handle, unsigned int id)
562	56	{
563		#ifdef CAPSTONE_DIET
564		return NULL;
565		#else
566	56	if (id >= ARR_SIZE(GroupNames)) {
567	0	return NULL;
568	0	}
569	56	return GroupNames[(int)id];
570	56	#endif
571	56	}