cs.c

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/* Capstone Disassembly Engine */
/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2015 */
#if defined (WIN32) || defined (WIN64) || defined (_WIN32) || defined (_WIN64)
#pragma warning(disable:4996)           // disable MSVC's warning on strcpy()
#pragma warning(disable:28719)      // disable MSVC's warning on strcpy()
#endif
#if defined(CAPSTONE_HAS_OSXKERNEL)
#include <Availability.h>
#include <libkern/libkern.h>
#else
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#endif
 
#include <string.h>
#include <capstone/capstone.h>
 
#include "utils.h"
#include "MCRegisterInfo.h"
 
#if defined(_KERNEL_MODE)
#include "windows\winkernel_mm.h"
#endif
 
// Issue #681: Windows kernel does not support formatting float point
#if defined(_KERNEL_MODE) && !defined(CAPSTONE_DIET)
#if defined(CAPSTONE_HAS_ARM) || defined(CAPSTONE_HAS_ARM64) || defined(CAPSTONE_HAS_M68K)
#define CAPSTONE_STR_INTERNAL(x) #x
#define CAPSTONE_STR(x) CAPSTONE_STR_INTERNAL(x)
#define CAPSTONE_MSVC_WRANING_PREFIX __FILE__ "("CAPSTONE_STR(__LINE__)") : warning message : "
 
#pragma message(CAPSTONE_MSVC_WRANING_PREFIX "Windows driver does not support full features for selected architecture(s). Define CAPSTONE_DIET to compile Capstone with only supported features. See issue #681 for details.")
 
#undef CAPSTONE_MSVC_WRANING_PREFIX
#undef CAPSTONE_STR
#undef CAPSTONE_STR_INTERNAL
#endif
#endif  // defined(_KERNEL_MODE) && !defined(CAPSTONE_DIET)
 
#if !defined(CAPSTONE_HAS_OSXKERNEL) && !defined(CAPSTONE_DIET) && !defined(_KERNEL_MODE)
#define INSN_CACHE_SIZE 32
#else
// reduce stack variable size for kernel/firmware
#define INSN_CACHE_SIZE 8
#endif
 
// default SKIPDATA mnemonic
#ifndef CAPSTONE_DIET
#define SKIPDATA_MNEM ".byte"
#else // No printing is available in diet mode
#define SKIPDATA_MNEM NULL
#endif
 
#include "arch/AArch64/AArch64Module.h"
#include "arch/ARM/ARMModule.h"
#include "arch/EVM/EVMModule.h"
#include "arch/M680X/M680XModule.h"
#include "arch/M68K/M68KModule.h"
#include "arch/Mips/MipsModule.h"
#include "arch/PowerPC/PPCModule.h"
#include "arch/Sparc/SparcModule.h"
#include "arch/SystemZ/SystemZModule.h"
#include "arch/TMS320C64x/TMS320C64xModule.h"
#include "arch/X86/X86Module.h"
#include "arch/XCore/XCoreModule.h"
 
// constructor initialization for all archs
static cs_err (*cs_arch_init[MAX_ARCH])(cs_struct *) = {
#ifdef CAPSTONE_HAS_ARM
    ARM_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_ARM64
    AArch64_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_MIPS
    Mips_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_X86
    X86_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_POWERPC
    PPC_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_SPARC
    Sparc_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_SYSZ
    SystemZ_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_XCORE
    XCore_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_M68K
    M68K_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_TMS320C64X
    TMS320C64x_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_M680X
    M680X_global_init,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_EVM
    EVM_global_init,
#else
    NULL,
#endif
};
 
// support cs_option() for all archs
static cs_err (*cs_arch_option[MAX_ARCH]) (cs_struct *, cs_opt_type, size_t value) = {
#ifdef CAPSTONE_HAS_ARM
    ARM_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_ARM64
    AArch64_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_MIPS
    Mips_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_X86
    X86_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_POWERPC
    PPC_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_SPARC
    Sparc_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_SYSZ
    SystemZ_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_XCORE
    XCore_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_M68K
    M68K_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_TMS320C64X
    TMS320C64x_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_M680X
    M680X_option,
#else
    NULL,
#endif
#ifdef CAPSTONE_HAS_EVM
    EVM_option,
#else
    NULL,
#endif
};
 
// bitmask for finding disallowed modes for an arch:
// to be called in cs_open()/cs_option()
static cs_mode cs_arch_disallowed_mode_mask[MAX_ARCH] = {
#ifdef CAPSTONE_HAS_ARM
    ~(CS_MODE_LITTLE_ENDIAN | CS_MODE_ARM | CS_MODE_V8 | CS_MODE_MCLASS
      | CS_MODE_THUMB | CS_MODE_BIG_ENDIAN),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_ARM64
    ~(CS_MODE_LITTLE_ENDIAN | CS_MODE_ARM | CS_MODE_BIG_ENDIAN),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_MIPS
    ~(CS_MODE_LITTLE_ENDIAN | CS_MODE_32 | CS_MODE_64 | CS_MODE_MICRO
      | CS_MODE_MIPS32R6 | CS_MODE_BIG_ENDIAN | CS_MODE_MIPS2 | CS_MODE_MIPS3),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_X86
    ~(CS_MODE_LITTLE_ENDIAN | CS_MODE_32 | CS_MODE_64 | CS_MODE_16),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_POWERPC
    ~(CS_MODE_LITTLE_ENDIAN | CS_MODE_32 | CS_MODE_64 | CS_MODE_BIG_ENDIAN
      | CS_MODE_QPX),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_SPARC
    ~(CS_MODE_BIG_ENDIAN | CS_MODE_V9),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_SYSZ
    ~(CS_MODE_BIG_ENDIAN),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_XCORE
    ~(CS_MODE_BIG_ENDIAN),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_M68K
    ~(CS_MODE_BIG_ENDIAN | CS_MODE_M68K_000 | CS_MODE_M68K_010 | CS_MODE_M68K_020
      | CS_MODE_M68K_030 | CS_MODE_M68K_040 | CS_MODE_M68K_060),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_TMS320C64X
    ~(CS_MODE_BIG_ENDIAN),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_M680X
    ~(CS_MODE_M680X_6301 | CS_MODE_M680X_6309 | CS_MODE_M680X_6800
      | CS_MODE_M680X_6801 | CS_MODE_M680X_6805 | CS_MODE_M680X_6808
      | CS_MODE_M680X_6809 | CS_MODE_M680X_6811 | CS_MODE_M680X_CPU12
      | CS_MODE_M680X_HCS08),
#else
    0,
#endif
#ifdef CAPSTONE_HAS_EVM
    0,
#else
    0,
#endif
};
 
// bitmask of enabled architectures
static uint32_t all_arch = 0
#ifdef CAPSTONE_HAS_ARM
    | (1 << CS_ARCH_ARM)
#endif
#ifdef CAPSTONE_HAS_ARM64
    | (1 << CS_ARCH_ARM64)
#endif
#ifdef CAPSTONE_HAS_MIPS
    | (1 << CS_ARCH_MIPS)
#endif
#ifdef CAPSTONE_HAS_X86
    | (1 << CS_ARCH_X86)
#endif
#ifdef CAPSTONE_HAS_POWERPC
    | (1 << CS_ARCH_PPC)
#endif
#ifdef CAPSTONE_HAS_SPARC
    | (1 << CS_ARCH_SPARC)
#endif
#ifdef CAPSTONE_HAS_SYSZ
    | (1 << CS_ARCH_SYSZ)
#endif
#ifdef CAPSTONE_HAS_XCORE
    | (1 << CS_ARCH_XCORE)
#endif
#ifdef CAPSTONE_HAS_M68K
    | (1 << CS_ARCH_M68K)
#endif
#ifdef CAPSTONE_HAS_TMS320C64X
    | (1 << CS_ARCH_TMS320C64X)
#endif
#ifdef CAPSTONE_HAS_M680X
    | (1 << CS_ARCH_M680X)
#endif
#ifdef CAPSTONE_HAS_EVM
    | (1 << CS_ARCH_EVM)
#endif
;
 
 
#if defined(CAPSTONE_USE_SYS_DYN_MEM)
#if !defined(CAPSTONE_HAS_OSXKERNEL) && !defined(_KERNEL_MODE)
// default
cs_malloc_t cs_mem_malloc = malloc;
cs_calloc_t cs_mem_calloc = calloc;
cs_realloc_t cs_mem_realloc = realloc;
cs_free_t cs_mem_free = free;
#if defined(_WIN32_WCE)
cs_vsnprintf_t cs_vsnprintf = _vsnprintf;
#else
cs_vsnprintf_t cs_vsnprintf = vsnprintf;
#endif  // defined(_WIN32_WCE)
 
#elif defined(_KERNEL_MODE)
// Windows driver
cs_malloc_t cs_mem_malloc = cs_winkernel_malloc;
cs_calloc_t cs_mem_calloc = cs_winkernel_calloc;
cs_realloc_t cs_mem_realloc = cs_winkernel_realloc;
cs_free_t cs_mem_free = cs_winkernel_free;
cs_vsnprintf_t cs_vsnprintf = cs_winkernel_vsnprintf;
#else
// OSX kernel
extern void* kern_os_malloc(size_t size);
extern void kern_os_free(void* addr);
extern void* kern_os_realloc(void* addr, size_t nsize);
 
static void* cs_kern_os_calloc(size_t num, size_t size)
{
    return kern_os_malloc(num * size); // malloc bzeroes the buffer
}
 
cs_malloc_t cs_mem_malloc = kern_os_malloc;
cs_calloc_t cs_mem_calloc = cs_kern_os_calloc;
cs_realloc_t cs_mem_realloc = kern_os_realloc;
cs_free_t cs_mem_free = kern_os_free;
cs_vsnprintf_t cs_vsnprintf = vsnprintf;
#endif  // !defined(CAPSTONE_HAS_OSXKERNEL) && !defined(_KERNEL_MODE)
#else
// User-defined
cs_malloc_t cs_mem_malloc = NULL;
cs_calloc_t cs_mem_calloc = NULL;
cs_realloc_t cs_mem_realloc = NULL;
cs_free_t cs_mem_free = NULL;
cs_vsnprintf_t cs_vsnprintf = NULL;
 
#endif  // defined(CAPSTONE_USE_SYS_DYN_MEM)
 
CAPSTONE_EXPORT
unsigned int CAPSTONE_API cs_version(int *major, int *minor)
{
    if (major != NULL && minor != NULL) {
        *major = CS_API_MAJOR;
        *minor = CS_API_MINOR;
    }
 
    return (CS_API_MAJOR << 8) + CS_API_MINOR;
}
 
CAPSTONE_EXPORT
bool CAPSTONE_API cs_support(int query)
{
    if (query == CS_ARCH_ALL)
        return all_arch == ((1 << CS_ARCH_ARM) | (1 << CS_ARCH_ARM64) |
                (1 << CS_ARCH_MIPS) | (1 << CS_ARCH_X86) |
                (1 << CS_ARCH_PPC) | (1 << CS_ARCH_SPARC) |
                (1 << CS_ARCH_SYSZ) | (1 << CS_ARCH_XCORE) |
                (1 << CS_ARCH_M68K) | (1 << CS_ARCH_TMS320C64X) |
                (1 << CS_ARCH_M680X) | (1 << CS_ARCH_EVM));
 
    if ((unsigned int)query < CS_ARCH_MAX)
        return all_arch & (1 << query);
 
    if (query == CS_SUPPORT_DIET) {
#ifdef CAPSTONE_DIET
        return true;
#else
        return false;
#endif
    }
 
    if (query == CS_SUPPORT_X86_REDUCE) {
#if defined(CAPSTONE_HAS_X86) && defined(CAPSTONE_X86_REDUCE)
        return true;
#else
        return false;
#endif
    }
 
    // unsupported query
    return false;
}
 
CAPSTONE_EXPORT
cs_err CAPSTONE_API cs_errno(csh handle)
{
    struct cs_struct *ud;
    if (!handle)
        return CS_ERR_CSH;
 
    ud = (struct cs_struct *)(uintptr_t)handle;
 
    return ud->errnum;
}
 
CAPSTONE_EXPORT
const char * CAPSTONE_API cs_strerror(cs_err code)
{
    switch(code) {
        default:
            return "Unknown error code";
        case CS_ERR_OK:
            return "OK (CS_ERR_OK)";
        case CS_ERR_MEM:
            return "Out of memory (CS_ERR_MEM)";
        case CS_ERR_ARCH:
            return "Invalid/unsupported architecture(CS_ERR_ARCH)";
        case CS_ERR_HANDLE:
            return "Invalid handle (CS_ERR_HANDLE)";
        case CS_ERR_CSH:
            return "Invalid csh (CS_ERR_CSH)";
        case CS_ERR_MODE:
            return "Invalid mode (CS_ERR_MODE)";
        case CS_ERR_OPTION:
            return "Invalid option (CS_ERR_OPTION)";
        case CS_ERR_DETAIL:
            return "Details are unavailable (CS_ERR_DETAIL)";
        case CS_ERR_MEMSETUP:
            return "Dynamic memory management uninitialized (CS_ERR_MEMSETUP)";
        case CS_ERR_VERSION:
            return "Different API version between core & binding (CS_ERR_VERSION)";
        case CS_ERR_DIET:
            return "Information irrelevant in diet engine (CS_ERR_DIET)";
        case CS_ERR_SKIPDATA:
            return "Information irrelevant for 'data' instruction in SKIPDATA mode (CS_ERR_SKIPDATA)";
        case CS_ERR_X86_ATT:
            return "AT&T syntax is unavailable (CS_ERR_X86_ATT)";
        case CS_ERR_X86_INTEL:
            return "INTEL syntax is unavailable (CS_ERR_X86_INTEL)";
        case CS_ERR_X86_MASM:
            return "MASM syntax is unavailable (CS_ERR_X86_MASM)";
    }
}
 
CAPSTONE_EXPORT
cs_err CAPSTONE_API cs_open(cs_arch arch, cs_mode mode, csh *handle)
{
    cs_err err;
    struct cs_struct *ud;
    if (!cs_mem_malloc || !cs_mem_calloc || !cs_mem_realloc || !cs_mem_free || !cs_vsnprintf)
        // Error: before cs_open(), dynamic memory management must be initialized
        // with cs_option(CS_OPT_MEM)
        return CS_ERR_MEMSETUP;
 
    if (arch < CS_ARCH_MAX && cs_arch_init[arch]) {
        // verify if requested mode is valid
        if (mode & cs_arch_disallowed_mode_mask[arch]) {
            *handle = 0;
            return CS_ERR_MODE;
        }
 
        ud = cs_mem_calloc(1, sizeof(*ud));
        if (!ud) {
            // memory insufficient
            return CS_ERR_MEM;
        }
 
        ud->errnum = CS_ERR_OK;
        ud->arch = arch;
        ud->mode = mode;
        // by default, do not break instruction into details
        ud->detail = CS_OPT_OFF;
 
        // default skipdata setup
        ud->skipdata_setup.mnemonic = SKIPDATA_MNEM;
 
        err = cs_arch_init[ud->arch](ud);
        if (err) {
            cs_mem_free(ud);
            *handle = 0;
            return err;
        }
 
        *handle = (uintptr_t)ud;
 
        return CS_ERR_OK;
    } else {
        *handle = 0;
        return CS_ERR_ARCH;
    }
}
 
CAPSTONE_EXPORT
cs_err CAPSTONE_API cs_close(csh *handle)
{
    struct cs_struct *ud;
    struct insn_mnem *next, *tmp;
 
    if (*handle == 0)
        // invalid handle
        return CS_ERR_CSH;
 
    ud = (struct cs_struct *)(*handle);
 
    if (ud->printer_info)
        cs_mem_free(ud->printer_info);
 
    // free the linked list of customized mnemonic
    tmp = ud->mnem_list;
    while(tmp) {
        next = tmp->next;
        cs_mem_free(tmp);
        tmp = next;
    }
 
    cs_mem_free(ud->insn_cache);
 
    memset(ud, 0, sizeof(*ud));
    cs_mem_free(ud);
 
    // invalidate this handle by ZERO out its value.
    // this is to make sure it is unusable after cs_close()
    *handle = 0;
 
    return CS_ERR_OK;
}
 
// fill insn with mnemonic & operands info
static void fill_insn(struct cs_struct *handle, cs_insn *insn, char *buffer, MCInst *mci,
        PostPrinter_t postprinter, const uint8_t *code)
{
#ifndef CAPSTONE_DIET
    char *sp, *mnem;
#endif
    uint16_t copy_size = MIN(sizeof(insn->bytes), insn->size);
 
    // fill the instruction bytes.
    // we might skip some redundant bytes in front in the case of X86
    memcpy(insn->bytes, code + insn->size - copy_size, copy_size);
    insn->size = copy_size;
 
    // alias instruction might have ID saved in OpcodePub
    if (MCInst_getOpcodePub(mci))
        insn->id = MCInst_getOpcodePub(mci);
 
    // post printer handles some corner cases (hacky)
    if (postprinter)
        postprinter((csh)handle, insn, buffer, mci);
 
#ifndef CAPSTONE_DIET
    // fill in mnemonic & operands
    // find first space or tab
    mnem = insn->mnemonic;
    for (sp = buffer; *sp; sp++) {
        if (*sp == ' '|| *sp == '\t')
            break;
        if (*sp == '|') // lock|rep prefix for x86
            *sp = ' ';
        // copy to @mnemonic
        *mnem = *sp;
        mnem++;
    }
 
    *mnem = '\0';
 
    // we might have customized mnemonic
    if (handle->mnem_list) {
        struct insn_mnem *tmp = handle->mnem_list;
        while(tmp) {
            if (tmp->insn.id == insn->id) {
                // found this instruction, so copy its mnemonic
                (void)strncpy(insn->mnemonic, tmp->insn.mnemonic, sizeof(insn->mnemonic));
                insn->mnemonic[sizeof(insn->mnemonic) - 1] = '\0';
                break;
            }
            tmp = tmp->next;
        }
    }
 
    // copy @op_str
    if (*sp) {
        // find the next non-space char
        sp++;
        for (; ((*sp == ' ') || (*sp == '\t')); sp++);
        strncpy(insn->op_str, sp, sizeof(insn->op_str) - 1);
        insn->op_str[sizeof(insn->op_str) - 1] = '\0';
    } else
        insn->op_str[0] = '\0';
#endif
}
 
// how many bytes will we skip when encountering data (CS_OPT_SKIPDATA)?
// this very much depends on instruction alignment requirement of each arch.
static uint8_t skipdata_size(cs_struct *handle)
{
    switch(handle->arch) {
        default:
            // should never reach
            return (uint8_t)-1;
        case CS_ARCH_ARM:
            // skip 2 bytes on Thumb mode.
            if (handle->mode & CS_MODE_THUMB)
                return 2;
            // otherwise, skip 4 bytes
            return 4;
        case CS_ARCH_ARM64:
        case CS_ARCH_MIPS:
        case CS_ARCH_PPC:
        case CS_ARCH_SPARC:
            // skip 4 bytes
            return 4;
        case CS_ARCH_SYSZ:
            // SystemZ instruction's length can be 2, 4 or 6 bytes,
            // so we just skip 2 bytes
            return 2;
        case CS_ARCH_X86:
            // X86 has no restriction on instruction alignment
            return 1;
        case CS_ARCH_XCORE:
            // XCore instruction's length can be 2 or 4 bytes,
            // so we just skip 2 bytes
            return 2;
        case CS_ARCH_M68K:
            // M68K has 2 bytes instruction alignment but contain multibyte instruction so we skip 2 bytes
            return 2;
        case CS_ARCH_TMS320C64X:
            // TMS320C64x alignment is 4.
            return 4;
        case CS_ARCH_M680X:
            // M680X alignment is 1.
            return 1;
        case CS_ARCH_EVM:
            // EVM alignment is 1.
            return 1;
    }
}
 
CAPSTONE_EXPORT
cs_err CAPSTONE_API cs_option(csh ud, cs_opt_type type, size_t value)
{
    struct cs_struct *handle;
    cs_opt_mnem *opt;
 
    // cs_option() can be called with NULL handle just for CS_OPT_MEM
    // This is supposed to be executed before all other APIs (even cs_open())
    if (type == CS_OPT_MEM) {
        cs_opt_mem *mem = (cs_opt_mem *)value;
 
        cs_mem_malloc = mem->malloc;
        cs_mem_calloc = mem->calloc;
        cs_mem_realloc = mem->realloc;
        cs_mem_free = mem->free;
        cs_vsnprintf = mem->vsnprintf;
 
        return CS_ERR_OK;
    }
 
    handle = (struct cs_struct *)(uintptr_t)ud;
    if (!handle)
        return CS_ERR_CSH;
 
    switch(type) {
        default:
            break;
 
        case CS_OPT_UNSIGNED:
            handle->imm_unsigned = (cs_opt_value)value;
            return CS_ERR_OK;
 
        case CS_OPT_DETAIL:
            handle->detail = (cs_opt_value)value;
            return CS_ERR_OK;
 
        case CS_OPT_SKIPDATA:
            handle->skipdata = (value == CS_OPT_ON);
            if (handle->skipdata) {
                if (handle->skipdata_size == 0) {
                    // set the default skipdata size
                    handle->skipdata_size = skipdata_size(handle);
                }
            }
            return CS_ERR_OK;
 
        case CS_OPT_SKIPDATA_SETUP:
            if (value)
                handle->skipdata_setup = *((cs_opt_skipdata *)value);
            return CS_ERR_OK;
 
        case CS_OPT_MNEMONIC:
            opt = (cs_opt_mnem *)value;
            if (opt->id) {
                if (opt->mnemonic) {
                    struct insn_mnem *tmp;
 
                    // add new instruction, or replace existing instruction
                    // 1. find if we already had this insn in the linked list
                    tmp = handle->mnem_list;
                    while(tmp) {
                        if (tmp->insn.id == opt->id) {
                            // found this instruction, so replace its mnemonic
                            (void)strncpy(tmp->insn.mnemonic, opt->mnemonic, sizeof(tmp->insn.mnemonic) - 1);
                            tmp->insn.mnemonic[sizeof(tmp->insn.mnemonic) - 1] = '\0';
                            break;
                        }
                        tmp = tmp->next;
                    }
 
                    // 2. add this instruction if we have not had it yet
                    if (!tmp) {
                        tmp = cs_mem_malloc(sizeof(*tmp));
                        tmp->insn.id = opt->id;
                        (void)strncpy(tmp->insn.mnemonic, opt->mnemonic, sizeof(tmp->insn.mnemonic) - 1);
                        tmp->insn.mnemonic[sizeof(tmp->insn.mnemonic) - 1] = '\0';
                        // this new instruction is heading the list
                        tmp->next = handle->mnem_list;
                        handle->mnem_list = tmp;
                    }
                    return CS_ERR_OK;
                } else {
                    struct insn_mnem *prev, *tmp;
 
                    // we want to delete an existing instruction
                    // iterate the list to find the instruction to remove it
                    tmp = handle->mnem_list;
                    prev = tmp;
                    while(tmp) {
                        if (tmp->insn.id == opt->id) {
                            // delete this instruction
                            if (tmp == prev) {
                                // head of the list
                                handle->mnem_list = tmp->next;
                            } else {
                                prev->next = tmp->next;
                            }
                            cs_mem_free(tmp);
                            break;
                        }
                        prev = tmp;
                        tmp = tmp->next;
                    }
                }
            }
            return CS_ERR_OK;
 
        case CS_OPT_MODE:
            // verify if requested mode is valid
            if (value & cs_arch_disallowed_mode_mask[handle->arch]) {
                return CS_ERR_OPTION;
            }
            break;
    }
 
    return cs_arch_option[handle->arch](handle, type, value);
}
 
// generate @op_str for data instruction of SKIPDATA
#ifndef CAPSTONE_DIET
static void skipdata_opstr(char *opstr, const uint8_t *buffer, size_t size)
{
    char *p = opstr;
    int len;
    size_t i;
    size_t available = sizeof(((cs_insn*)NULL)->op_str);
 
    if (!size) {
        opstr[0] = '\0';
        return;
    }
 
    len = cs_snprintf(p, available, "0x%02x", buffer[0]);
    p+= len;
    available -= len;
 
    for(i = 1; i < size; i++) {
        len = cs_snprintf(p, available, ", 0x%02x", buffer[i]);
        if (len < 0) {
            break;
        }
        if ((size_t)len > available - 1) {
            break;
        }
        p+= len;
        available -= len;
    }
}
#endif
 
// dynamicly allocate memory to contain disasm insn
// NOTE: caller must free() the allocated memory itself to avoid memory leaking
CAPSTONE_EXPORT
size_t CAPSTONE_API cs_disasm(csh ud, const uint8_t *buffer, size_t size, uint64_t offset, size_t count, cs_insn **insn)
{
    struct cs_struct *handle;
    MCInst mci;
    uint16_t insn_size;
    size_t c = 0, i;
    unsigned int f = 0; // index of the next instruction in the cache
    cs_insn *insn_cache;    // cache contains disassembled instructions
    void *total = NULL;
    size_t total_size = 0;  // total size of output buffer containing all insns
    bool r;
    void *tmp;
    size_t skipdata_bytes;
    uint64_t offset_org; // save all the original info of the buffer
    size_t size_org;
    const uint8_t *buffer_org;
    unsigned int cache_size = INSN_CACHE_SIZE;
    size_t next_offset;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
    if (!handle) {
        // FIXME: how to handle this case:
        // handle->errnum = CS_ERR_HANDLE;
        return 0;
    }
 
    handle->errnum = CS_ERR_OK;
 
    // reset IT block of ARM structure
    if (handle->arch == CS_ARCH_ARM)
        handle->ITBlock.size = 0;
 
#ifdef CAPSTONE_USE_SYS_DYN_MEM
    if (count > 0 && count <= INSN_CACHE_SIZE)
        cache_size = (unsigned int) count;
#endif
 
    // save the original offset for SKIPDATA
    buffer_org = buffer;
    offset_org = offset;
    size_org = size;
 
    total_size = sizeof(cs_insn) * cache_size;
    total = cs_mem_calloc(1, total_size);
    if (total == NULL) {
        // insufficient memory
        handle->errnum = CS_ERR_MEM;
        return 0;
    }
 
    insn_cache = total;
 
    while (size > 0) {
        MCInst_Init(&mci);
        mci.csh = handle;
 
        // relative branches need to know the address & size of current insn
        mci.address = offset;
 
        if (handle->detail) {
            // allocate memory for @detail pointer
            insn_cache->detail = cs_mem_calloc(1, sizeof(cs_detail));
        } else {
            insn_cache->detail = NULL;
        }
 
        // save all the information for non-detailed mode
        mci.flat_insn = insn_cache;
        mci.flat_insn->address = offset;
#ifdef CAPSTONE_DIET
        // zero out mnemonic & op_str
        mci.flat_insn->mnemonic[0] = '\0';
        mci.flat_insn->op_str[0] = '\0';
#endif
 
        r = handle->disasm(ud, buffer, size, &mci, &insn_size, offset, handle->getinsn_info);
        if (r) {
            SStream ss;
            SStream_Init(&ss);
 
            mci.flat_insn->size = insn_size;
 
            // map internal instruction opcode to public insn ID
 
            handle->insn_id(handle, insn_cache, mci.Opcode);
 
            handle->printer(&mci, &ss, handle->printer_info);
            fill_insn(handle, insn_cache, ss.buffer, &mci, handle->post_printer, buffer);
 
            // adjust for pseudo opcode (X86)
            if (handle->arch == CS_ARCH_X86)
                insn_cache->id += mci.popcode_adjust;
 
            next_offset = insn_size;
        } else  {
            // encounter a broken instruction
 
            // free memory of @detail pointer
            if (handle->detail) {
                cs_mem_free(insn_cache->detail);
            }
 
            // if there is no request to skip data, or remaining data is too small,
            // then bail out
            if (!handle->skipdata || handle->skipdata_size > size)
                break;
 
            if (handle->skipdata_setup.callback) {
                skipdata_bytes = handle->skipdata_setup.callback(buffer_org, size_org,
                        (size_t)(offset - offset_org), handle->skipdata_setup.user_data);
                if (skipdata_bytes > size)
                    // remaining data is not enough
                    break;
 
                if (!skipdata_bytes)
                    // user requested not to skip data, so bail out
                    break;
            } else
                skipdata_bytes = handle->skipdata_size;
 
            // we have to skip some amount of data, depending on arch & mode
            insn_cache->id = 0; // invalid ID for this "data" instruction
            insn_cache->address = offset;
            insn_cache->size = (uint16_t)skipdata_bytes;
            memcpy(insn_cache->bytes, buffer, skipdata_bytes);
#ifdef CAPSTONE_DIET
            insn_cache->mnemonic[0] = '\0';
            insn_cache->op_str[0] = '\0';
#else
            strncpy(insn_cache->mnemonic, handle->skipdata_setup.mnemonic,
                    sizeof(insn_cache->mnemonic) - 1);
            skipdata_opstr(insn_cache->op_str, buffer, skipdata_bytes);
#endif
            insn_cache->detail = NULL;
 
            next_offset = skipdata_bytes;
        }
 
        // one more instruction entering the cache
        f++;
 
        // one more instruction disassembled
        c++;
        if (count > 0 && c == count)
            // already got requested number of instructions
            break;
 
        if (f == cache_size) {
            // full cache, so expand the cache to contain incoming insns
            cache_size = cache_size * 8 / 5; // * 1.6 ~ golden ratio
            total_size += (sizeof(cs_insn) * cache_size);
            unsigned int old_size = total_size;
            tmp = cs_mem_realloc(total, total_size);
            if (tmp == NULL) {  // insufficient memory
                if (handle->detail) {
                    insn_cache = (cs_insn *)total;
                    for (i = 0; i < c; i++, insn_cache++)
                        cs_mem_free(insn_cache->detail);
                }
 
                cs_mem_free(total);
                *insn = NULL;
                handle->errnum = CS_ERR_MEM;
                return 0;
            }
 
            memset((char *)total + (sizeof(cs_insn) * old_size), 0, (total_size - old_size));
            total = tmp;
            // continue to fill in the cache after the last instruction
            insn_cache = (cs_insn *)((char *)total + sizeof(cs_insn) * c);
 
            // reset f back to 0, so we fill in the cache from begining
            f = 0;
        } else
            insn_cache++;
 
        buffer += next_offset;
        size -= next_offset;
        offset += next_offset;
    }
 
    if (!c) {
        // we did not disassemble any instruction
        cs_mem_free(total);
        total = NULL;
    } else if (f != cache_size) {
        // total did not fully use the last cache, so downsize it
        tmp = cs_mem_realloc(total, total_size - (cache_size - f) * sizeof(*insn_cache));
        if (tmp == NULL) {  // insufficient memory
            // free all detail pointers
            if (handle->detail) {
                insn_cache = (cs_insn *)total;
                for (i = 0; i < c; i++, insn_cache++)
                    cs_mem_free(insn_cache->detail);
            }
 
            cs_mem_free(total);
            *insn = NULL;
 
            handle->errnum = CS_ERR_MEM;
            return 0;
        }
 
        total = tmp;
    }
 
    *insn = total;
 
    return c;
}
 
CAPSTONE_EXPORT
CAPSTONE_DEPRECATED
size_t CAPSTONE_API cs_disasm_ex(csh ud, const uint8_t *buffer, size_t size, uint64_t offset, size_t count, cs_insn **insn)
{
    return cs_disasm(ud, buffer, size, offset, count, insn);
}
 
CAPSTONE_EXPORT
void CAPSTONE_API cs_free(cs_insn *insn, size_t count)
{
    size_t i;
 
    // free all detail pointers
    for (i = 0; i < count; i++)
        cs_mem_free(insn[i].detail);
 
    // then free pointer to cs_insn array
    cs_mem_free(insn);
}
 
CAPSTONE_EXPORT
cs_insn * CAPSTONE_API cs_malloc(csh ud)
{
    cs_insn *insn;
    struct cs_struct *handle = (struct cs_struct *)(uintptr_t)ud;
 
    insn = cs_mem_malloc(sizeof(cs_insn));
    if (!insn) {
        // insufficient memory
        handle->errnum = CS_ERR_MEM;
        return NULL;
    } else {
        if (handle->detail) {
            // allocate memory for @detail pointer
            insn->detail = cs_mem_malloc(sizeof(cs_detail));
            if (insn->detail == NULL) { // insufficient memory
                cs_mem_free(insn);
                handle->errnum = CS_ERR_MEM;
                return NULL;
            }
        } else
            insn->detail = NULL;
    }
 
    return insn;
}
 
// iterator for instruction "single-stepping"
CAPSTONE_EXPORT
bool CAPSTONE_API cs_disasm_iter(csh ud, const uint8_t **code, size_t *size,
        uint64_t *address, cs_insn *insn)
{
    struct cs_struct *handle;
    uint16_t insn_size;
    MCInst mci;
    bool r;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
    if (!handle) {
        return false;
    }
 
    handle->errnum = CS_ERR_OK;
 
    MCInst_Init(&mci);
    mci.csh = handle;
 
    // relative branches need to know the address & size of current insn
    mci.address = *address;
 
    // save all the information for non-detailed mode
    mci.flat_insn = insn;
    mci.flat_insn->address = *address;
#ifdef CAPSTONE_DIET
    // zero out mnemonic & op_str
    mci.flat_insn->mnemonic[0] = '\0';
    mci.flat_insn->op_str[0] = '\0';
#endif
 
    r = handle->disasm(ud, *code, *size, &mci, &insn_size, *address, handle->getinsn_info);
    if (r) {
        SStream ss;
        SStream_Init(&ss);
 
        mci.flat_insn->size = insn_size;
 
        // map internal instruction opcode to public insn ID
        handle->insn_id(handle, insn, mci.Opcode);
 
        handle->printer(&mci, &ss, handle->printer_info);
 
        fill_insn(handle, insn, ss.buffer, &mci, handle->post_printer, *code);
 
        // adjust for pseudo opcode (X86)
        if (handle->arch == CS_ARCH_X86)
            insn->id += mci.popcode_adjust;
 
        *code += insn_size;
        *size -= insn_size;
        *address += insn_size;
    } else {    // encounter a broken instruction
        size_t skipdata_bytes;
 
        // if there is no request to skip data, or remaining data is too small,
        // then bail out
        if (!handle->skipdata || handle->skipdata_size > *size)
            return false;
 
        if (handle->skipdata_setup.callback) {
            skipdata_bytes = handle->skipdata_setup.callback(*code, *size,
                    0, handle->skipdata_setup.user_data);
            if (skipdata_bytes > *size)
                // remaining data is not enough
                return false;
 
            if (!skipdata_bytes)
                // user requested not to skip data, so bail out
                return false;
        } else
            skipdata_bytes = handle->skipdata_size;
 
        // we have to skip some amount of data, depending on arch & mode
        insn->id = 0;   // invalid ID for this "data" instruction
        insn->address = *address;
        insn->size = (uint16_t)skipdata_bytes;
#ifdef CAPSTONE_DIET
        insn->mnemonic[0] = '\0';
        insn->op_str[0] = '\0';
#else
        memcpy(insn->bytes, *code, skipdata_bytes);
        strncpy(insn->mnemonic, handle->skipdata_setup.mnemonic,
                sizeof(insn->mnemonic) - 1);
        skipdata_opstr(insn->op_str, *code, skipdata_bytes);
#endif
 
        *code += skipdata_bytes;
        *size -= skipdata_bytes;
        *address += skipdata_bytes;
    }
 
    return true;
}
 
// return friendly name of regiser in a string
CAPSTONE_EXPORT
const char * CAPSTONE_API cs_reg_name(csh ud, unsigned int reg)
{
    struct cs_struct *handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle || handle->reg_name == NULL) {
        return NULL;
    }
 
    return handle->reg_name(ud, reg);
}
 
CAPSTONE_EXPORT
const char * CAPSTONE_API cs_insn_name(csh ud, unsigned int insn)
{
    struct cs_struct *handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle || handle->insn_name == NULL) {
        return NULL;
    }
 
    return handle->insn_name(ud, insn);
}
 
CAPSTONE_EXPORT
const char * CAPSTONE_API cs_group_name(csh ud, unsigned int group)
{
    struct cs_struct *handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle || handle->group_name == NULL) {
        return NULL;
    }
 
    return handle->group_name(ud, group);
}
 
CAPSTONE_EXPORT
bool CAPSTONE_API cs_insn_group(csh ud, const cs_insn *insn, unsigned int group_id)
{
    struct cs_struct *handle;
    if (!ud)
        return false;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return false;
    }
 
    if (!insn->id) {
        handle->errnum = CS_ERR_SKIPDATA;
        return false;
    }
 
    if (!insn->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return false;
    }
 
    return arr_exist8(insn->detail->groups, insn->detail->groups_count, group_id);
}
 
CAPSTONE_EXPORT
bool CAPSTONE_API cs_reg_read(csh ud, const cs_insn *insn, unsigned int reg_id)
{
    struct cs_struct *handle;
    if (!ud)
        return false;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return false;
    }
 
    if (!insn->id) {
        handle->errnum = CS_ERR_SKIPDATA;
        return false;
    }
 
    if (!insn->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return false;
    }
 
    return arr_exist(insn->detail->regs_read, insn->detail->regs_read_count, reg_id);
}
 
CAPSTONE_EXPORT
bool CAPSTONE_API cs_reg_write(csh ud, const cs_insn *insn, unsigned int reg_id)
{
    struct cs_struct *handle;
    if (!ud)
        return false;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return false;
    }
 
    if (!insn->id) {
        handle->errnum = CS_ERR_SKIPDATA;
        return false;
    }
 
    if (!insn->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return false;
    }
 
    return arr_exist(insn->detail->regs_write, insn->detail->regs_write_count, reg_id);
}
 
CAPSTONE_EXPORT
int CAPSTONE_API cs_op_count(csh ud, const cs_insn *insn, unsigned int op_type)
{
    struct cs_struct *handle;
    unsigned int count = 0, i;
    if (!ud)
        return -1;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return -1;
    }
 
    if (!insn->id) {
        handle->errnum = CS_ERR_SKIPDATA;
        return -1;
    }
 
    if (!insn->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return -1;
    }
 
    handle->errnum = CS_ERR_OK;
 
    switch (handle->arch) {
        default:
            handle->errnum = CS_ERR_HANDLE;
            return -1;
        case CS_ARCH_ARM:
            for (i = 0; i < insn->detail->arm.op_count; i++)
                if (insn->detail->arm.operands[i].type == (arm_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_ARM64:
            for (i = 0; i < insn->detail->arm64.op_count; i++)
                if (insn->detail->arm64.operands[i].type == (arm64_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_X86:
            for (i = 0; i < insn->detail->x86.op_count; i++)
                if (insn->detail->x86.operands[i].type == (x86_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_MIPS:
            for (i = 0; i < insn->detail->mips.op_count; i++)
                if (insn->detail->mips.operands[i].type == (mips_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_PPC:
            for (i = 0; i < insn->detail->ppc.op_count; i++)
                if (insn->detail->ppc.operands[i].type == (ppc_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_SPARC:
            for (i = 0; i < insn->detail->sparc.op_count; i++)
                if (insn->detail->sparc.operands[i].type == (sparc_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_SYSZ:
            for (i = 0; i < insn->detail->sysz.op_count; i++)
                if (insn->detail->sysz.operands[i].type == (sysz_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_XCORE:
            for (i = 0; i < insn->detail->xcore.op_count; i++)
                if (insn->detail->xcore.operands[i].type == (xcore_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_M68K:
            for (i = 0; i < insn->detail->m68k.op_count; i++)
                if (insn->detail->m68k.operands[i].type == (m68k_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_TMS320C64X:
            for (i = 0; i < insn->detail->tms320c64x.op_count; i++)
                if (insn->detail->tms320c64x.operands[i].type == (tms320c64x_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_M680X:
            for (i = 0; i < insn->detail->m680x.op_count; i++)
                if (insn->detail->m680x.operands[i].type == (m680x_op_type)op_type)
                    count++;
            break;
        case CS_ARCH_EVM:
#if 0
            for (i = 0; i < insn->detail->evm.op_count; i++)
                if (insn->detail->evm.operands[i].type == (evm_op_type)op_type)
                    count++;
#endif
            break;
    }
 
    return count;
}
 
CAPSTONE_EXPORT
int CAPSTONE_API cs_op_index(csh ud, const cs_insn *insn, unsigned int op_type,
        unsigned int post)
{
    struct cs_struct *handle;
    unsigned int count = 0, i;
    if (!ud)
        return -1;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
 
    if (!handle->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return -1;
    }
 
    if (!insn->id) {
        handle->errnum = CS_ERR_SKIPDATA;
        return -1;
    }
 
    if (!insn->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return -1;
    }
 
    handle->errnum = CS_ERR_OK;
 
    switch (handle->arch) {
        default:
            handle->errnum = CS_ERR_HANDLE;
            return -1;
        case CS_ARCH_ARM:
            for (i = 0; i < insn->detail->arm.op_count; i++) {
                if (insn->detail->arm.operands[i].type == (arm_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_ARM64:
            for (i = 0; i < insn->detail->arm64.op_count; i++) {
                if (insn->detail->arm64.operands[i].type == (arm64_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_X86:
            for (i = 0; i < insn->detail->x86.op_count; i++) {
                if (insn->detail->x86.operands[i].type == (x86_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_MIPS:
            for (i = 0; i < insn->detail->mips.op_count; i++) {
                if (insn->detail->mips.operands[i].type == (mips_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_PPC:
            for (i = 0; i < insn->detail->ppc.op_count; i++) {
                if (insn->detail->ppc.operands[i].type == (ppc_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_SPARC:
            for (i = 0; i < insn->detail->sparc.op_count; i++) {
                if (insn->detail->sparc.operands[i].type == (sparc_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_SYSZ:
            for (i = 0; i < insn->detail->sysz.op_count; i++) {
                if (insn->detail->sysz.operands[i].type == (sysz_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_XCORE:
            for (i = 0; i < insn->detail->xcore.op_count; i++) {
                if (insn->detail->xcore.operands[i].type == (xcore_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_M68K:
            for (i = 0; i < insn->detail->m68k.op_count; i++) {
                if (insn->detail->m68k.operands[i].type == (m68k_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_TMS320C64X:
            for (i = 0; i < insn->detail->tms320c64x.op_count; i++) {
                if (insn->detail->tms320c64x.operands[i].type == (tms320c64x_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_M680X:
            for (i = 0; i < insn->detail->m680x.op_count; i++) {
                if (insn->detail->m680x.operands[i].type == (m680x_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
            break;
        case CS_ARCH_EVM:
#if 0
            for (i = 0; i < insn->detail->evm.op_count; i++) {
                if (insn->detail->evm.operands[i].type == (evm_op_type)op_type)
                    count++;
                if (count == post)
                    return i;
            }
#endif
            break;
    }
 
    return -1;
}
 
CAPSTONE_EXPORT
cs_err CAPSTONE_API cs_regs_access(csh ud, const cs_insn *insn,
        cs_regs regs_read, uint8_t *regs_read_count,
        cs_regs regs_write, uint8_t *regs_write_count)
{
    struct cs_struct *handle;
 
    if (!ud)
        return -1;
 
    handle = (struct cs_struct *)(uintptr_t)ud;
 
#ifdef CAPSTONE_DIET
    // This API does not work in DIET mode
    handle->errnum = CS_ERR_DIET;
    return CS_ERR_DIET;
#else
    if (!handle->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return CS_ERR_DETAIL;
    }
 
    if (!insn->id) {
        handle->errnum = CS_ERR_SKIPDATA;
        return CS_ERR_SKIPDATA;
    }
 
    if (!insn->detail) {
        handle->errnum = CS_ERR_DETAIL;
        return CS_ERR_DETAIL;
    }
 
    if (handle->reg_access) {
        handle->reg_access(insn, regs_read, regs_read_count, regs_write, regs_write_count);
    } else {
        // this arch is unsupported yet
        handle->errnum = CS_ERR_ARCH;
        return CS_ERR_ARCH;
    }
 
    return CS_ERR_OK;
#endif
}