Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 1601 insertions, 0 deletions

diff --git a/capstone/cs.c b/capstone/cs.c
new file mode 100644
index 000000000..e42764a60
--- /dev/null
+++ b/capstone/cs.c
@@ -0,0 +1,1601 @@
+/* Capstone Disassembly Engine */
+/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2019 */
+#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/WASM/WASMModule.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"
+#include "arch/RISCV/RISCVModule.h"
+#include "arch/MOS65XX/MOS65XXModule.h"
+#include "arch/BPF/BPFModule.h"
+
+static const struct {
+	// constructor initialization
+	cs_err (*arch_init)(cs_struct *);
+	// support cs_option()
+	cs_err (*arch_option)(cs_struct *, cs_opt_type, size_t value);
+	// bitmask for finding disallowed modes for an arch:
+	// to be called in cs_open()/cs_option()
+	cs_mode arch_disallowed_mode_mask;
+} arch_configs[MAX_ARCH] = {
+#ifdef CAPSTONE_HAS_ARM
+	{
+		ARM_global_init,
+		ARM_option,
+		~(CS_MODE_LITTLE_ENDIAN | CS_MODE_ARM | CS_MODE_V8 | CS_MODE_MCLASS
+				| CS_MODE_THUMB | CS_MODE_BIG_ENDIAN)
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_ARM64
+	{
+		AArch64_global_init,
+		AArch64_option,
+		~(CS_MODE_LITTLE_ENDIAN | CS_MODE_ARM | CS_MODE_BIG_ENDIAN),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_MIPS
+	{
+		Mips_global_init,
+		Mips_option,
+		~(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
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_X86
+	{
+		X86_global_init,
+		X86_option,
+		~(CS_MODE_LITTLE_ENDIAN | CS_MODE_32 | CS_MODE_64 | CS_MODE_16),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_POWERPC
+	{
+		PPC_global_init,
+		PPC_option,
+		~(CS_MODE_LITTLE_ENDIAN | CS_MODE_32 | CS_MODE_64 | CS_MODE_BIG_ENDIAN
+				| CS_MODE_QPX),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_SPARC
+	{
+		Sparc_global_init,
+		Sparc_option,
+		~(CS_MODE_BIG_ENDIAN | CS_MODE_V9),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_SYSZ
+	{
+		SystemZ_global_init,
+		SystemZ_option,
+		~(CS_MODE_BIG_ENDIAN),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_XCORE
+	{
+		XCore_global_init,
+		XCore_option,
+		~(CS_MODE_BIG_ENDIAN),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_M68K
+	{
+		M68K_global_init,
+		M68K_option,
+		~(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
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_TMS320C64X
+	{
+		TMS320C64x_global_init,
+		TMS320C64x_option,
+		~(CS_MODE_BIG_ENDIAN),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_M680X
+	{
+		M680X_global_init,
+		M680X_option,
+		~(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
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_EVM
+	{
+		EVM_global_init,
+		EVM_option,
+		0,
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_MOS65XX
+	{
+		MOS65XX_global_init,
+		MOS65XX_option,
+		~(CS_MODE_LITTLE_ENDIAN | CS_MODE_MOS65XX_6502 | CS_MODE_MOS65XX_65C02
+				| CS_MODE_MOS65XX_W65C02 | CS_MODE_MOS65XX_65816_LONG_MX),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_WASM
+	{
+		WASM_global_init,
+		WASM_option,
+		0,
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_BPF
+	{
+		BPF_global_init,
+		BPF_option,
+		~(CS_MODE_LITTLE_ENDIAN | CS_MODE_BPF_CLASSIC | CS_MODE_BPF_EXTENDED
+				| CS_MODE_BIG_ENDIAN),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+#ifdef CAPSTONE_HAS_RISCV
+	{
+		RISCV_global_init,
+		RISCV_option,
+		~(CS_MODE_RISCV32 | CS_MODE_RISCV64 | CS_MODE_RISCVC),
+	},
+#else
+	{ NULL, NULL, 0 },
+#endif
+};
+
+// bitmask of enabled architectures
+static const 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
+#ifdef CAPSTONE_HAS_MOS65XX
+	| (1 << CS_ARCH_MOS65XX)
+#endif
+#ifdef CAPSTONE_HAS_WASM
+	| (1 << CS_ARCH_WASM)
+#endif
+#ifdef CAPSTONE_HAS_BPF
+	| (1 << CS_ARCH_BPF)
+#endif
+#ifdef CAPSTONE_HAS_RISCV
+	| (1 << CS_ARCH_RISCV)
+#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)        |
+				    (1 << CS_ARCH_RISCV) | (1 << CS_ARCH_MOS65XX)    | 
+				    (1 << CS_ARCH_WASM)  | (1 << CS_ARCH_BPF));
+
+	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 && arch_configs[arch].arch_init) {
+		// verify if requested mode is valid
+		if (mode & arch_configs[arch].arch_disallowed_mode_mask) {
+			*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 = arch_configs[ud->arch].arch_init(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;
+}
+
+// replace str1 in target with str2; target starts with str1
+// output is put into result (which is array of char with size CS_MNEMONIC_SIZE)
+// return 0 on success, -1 on failure
+static int str_replace(char *result, char *target, const char *str1, char *str2)
+{
+	// only perform replacement if the output fits into result
+	if (strlen(target) - strlen(str1) + strlen(str2) < CS_MNEMONIC_SIZE - 1)  {
+		// copy str2 to begining of result
+		strcpy(result, str2);
+		// skip str1 - already replaced by str2
+		strcat(result, target + strlen(str1));
+
+		return 0;
+	} else
+		return -1;
+}
+
+// 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) {
+				char str[CS_MNEMONIC_SIZE];
+
+				if (!str_replace(str, insn->mnemonic, cs_insn_name((csh)handle, insn->id), tmp->insn.mnemonic)) {
+					// copy result to mnemonic
+					(void)strncpy(insn->mnemonic, str, sizeof(insn->mnemonic) - 1);
+					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;
+		case CS_ARCH_WASM:
+			//WASM alignment is 1
+			return 1;
+		case CS_ARCH_MOS65XX:
+			// MOS65XX alignment is 1.
+			return 1;
+		case CS_ARCH_BPF:
+			// both classic and extended BPF have alignment 8.
+			return 8;
+		case CS_ARCH_RISCV:
+			// special compress mode
+			if (handle->mode & CS_MODE_RISCVC)
+				return 1;
+			return 4;
+	}
+}
+
+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 & arch_configs[handle->arch].arch_disallowed_mode_mask) {
+				return CS_ERR_OPTION;
+			}
+			break;
+	}
+
+	return arch_configs[handle->arch].arch_option(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_malloc(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_malloc(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);
+			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;
+			}
+
+			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
+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:
+			break;
+		case CS_ARCH_MOS65XX:
+			for (i = 0; i < insn->detail->mos65xx.op_count; i++)
+				if (insn->detail->mos65xx.operands[i].type == (mos65xx_op_type)op_type)
+					count++;
+			break;
+		case CS_ARCH_WASM:
+			for (i = 0; i < insn->detail->wasm.op_count; i++)
+				if (insn->detail->wasm.operands[i].type == (wasm_op_type)op_type)
+					count++;
+			break;
+		case CS_ARCH_BPF:
+			for (i = 0; i < insn->detail->bpf.op_count; i++)
+				if (insn->detail->bpf.operands[i].type == (bpf_op_type)op_type)
+					count++;
+			break;
+		case CS_ARCH_RISCV:
+			for (i = 0; i < insn->detail->riscv.op_count; i++)
+				if (insn->detail->riscv.operands[i].type == (riscv_op_type)op_type)
+					count++;
+			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;
+		case CS_ARCH_MOS65XX:
+			for (i = 0; i < insn->detail->mos65xx.op_count; i++) {
+				if (insn->detail->mos65xx.operands[i].type == (mos65xx_op_type)op_type)
+					count++;
+				if (count == post)
+					return i;
+			}
+			break;
+		case CS_ARCH_WASM:
+			for (i = 0; i < insn->detail->wasm.op_count; i++) {
+				if (insn->detail->wasm.operands[i].type == (wasm_op_type)op_type)
+					count++;
+				if (count == post)
+					return i;
+			}
+			break;
+		case CS_ARCH_BPF:
+			for (i = 0; i < insn->detail->bpf.op_count; i++) {
+				if (insn->detail->bpf.operands[i].type == (bpf_op_type)op_type)
+					count++;
+				if (count == post)
+					return i;
+			}
+			break;
+		case CS_ARCH_RISCV:
+			for (i = 0; i < insn->detail->riscv.op_count; i++) {
+				if (insn->detail->riscv.operands[i].type == (riscv_op_type)op_type)
+					count++;
+				if (count == post)
+					return i;
+			}
+			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
+}