// the following must precede stdio (woo, thanks msft)

#if defined(_MSC_VER) && _MSC_VER < 1900

#define _CRT_SECURE_NO_WARNINGS

#endif

#include <stdio.h>

#include <stdlib.h>

#include <inttypes.h>

#include <capstone/capstone.h>

#include "platform.h"

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);

static FILE *outfile = NULL;

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {

    csh handle;

    cs_insn *all_insn;

    cs_detail *detail;

    cs_err err;

    unsigned int i;

    if (Size < 1) {

        // 1 byte for arch choice

        return 0;

    } else if (Size > 0x1000) {

        //limit input to 4kb

        Size = 0x1000;

    }

    if (outfile == NULL) {

        // we compute the output

        outfile = fopen("/dev/null", "w");

        if (outfile == NULL) {

            return 0;

        }

    }

    i = get_platform_entry((uint8_t)Data[0]);

    err = cs_open(platforms[i].arch, platforms[i].mode, &handle);

    if (err) {

        return 0;

    }

    cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON);

    if (Data[0]&0x80) {

        //hack

        cs_option(handle, CS_OPT_SYNTAX, CS_OPT_SYNTAX_ATT);

    }

    uint64_t address = 0x1000;

    size_t count = cs_disasm(handle, Data+1, Size-1, address, 0, &all_insn);

    if (count) {

        size_t j;

        unsigned int n;

        for (j = 0; j < count; j++) {

            cs_insn *insn = &(all_insn[j]);

            fprintf(outfile, "0x%"PRIx64":\t%s\t\t%s // insn-ID: %u, insn-mnem: %s\n",

                   insn->address, insn->mnemonic, insn->op_str,

                   insn->id, cs_insn_name(handle, insn->id));

            detail = insn->detail;

            if (detail->regs_read_count > 0) {

                fprintf(outfile, "\tImplicit registers read: ");

                for (n = 0; n < detail->regs_read_count; n++) {

                    fprintf(outfile, "%s ", cs_reg_name(handle, detail->regs_read[n]));

                }

            }

            if (detail->regs_write_count > 0) {

                fprintf(outfile, "\tImplicit registers modified: ");

                for (n = 0; n < detail->regs_write_count; n++) {

                    fprintf(outfile, "%s ", cs_reg_name(handle, detail->regs_write[n]));

                }

            }

            if (detail->groups_count > 0) {

                fprintf(outfile, "\tThis instruction belongs to groups: ");

                for (n = 0; n < detail->groups_count; n++) {

                    fprintf(outfile, "%s ", cs_group_name(handle, detail->groups[n]));

                }

            }

        }

        fprintf(outfile, "0x%"PRIx64":\n", all_insn[j-1].address + all_insn[j-1].size);

        cs_free(all_insn, count);

    }

    cs_close(&handle);

    return 0;

}