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#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <assert.h>
#include <capstone/capstone.h>
struct platform {
cs_arch arch;
cs_mode mode;
char *comment;
};
FILE * outfile = NULL;
struct platform platforms[] = {
{
// item 0
CS_ARCH_X86,
CS_MODE_32,
"X86 32 (Intel syntax)"
},
{
// item 1
CS_ARCH_X86,
CS_MODE_64,
"X86 64 (Intel syntax)"
},
{
// item 2
CS_ARCH_ARM,
CS_MODE_ARM,
"ARM"
},
{
// item 3
CS_ARCH_ARM,
CS_MODE_THUMB,
"THUMB"
},
{
// item 4
CS_ARCH_ARM,
(cs_mode)(CS_MODE_ARM + CS_MODE_V8),
"Arm-V8"
},
{
// item 5
CS_ARCH_ARM,
(cs_mode)(CS_MODE_THUMB+CS_MODE_V8),
"THUMB+V8"
},
{
// item 6
CS_ARCH_ARM,
(cs_mode)(CS_MODE_THUMB + CS_MODE_MCLASS),
"Thumb-MClass"
},
{
// item 7
CS_ARCH_ARM64,
(cs_mode)0,
"ARM-64"
},
{
// item 8
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS32 + CS_MODE_BIG_ENDIAN),
"MIPS-32 (Big-endian)"
},
{
// item 9
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS32 + CS_MODE_MICRO),
"MIPS-32 (micro)"
},
{
//item 10
CS_ARCH_MIPS,
CS_MODE_MIPS64,
"MIPS-64-EL (Little-endian)"
},
{
//item 11
CS_ARCH_MIPS,
CS_MODE_MIPS32,
"MIPS-32-EL (Little-endian)"
},
{
//item 12
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS64 + CS_MODE_BIG_ENDIAN),
"MIPS-64 (Big-endian)"
},
{
//item 13
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS32 + CS_MODE_MICRO + CS_MODE_BIG_ENDIAN),
"MIPS-32 | Micro (Big-endian)"
},
{
//item 14
CS_ARCH_PPC,
CS_MODE_BIG_ENDIAN,
"PPC-64"
},
{
//item 15
CS_ARCH_SPARC,
CS_MODE_BIG_ENDIAN,
"Sparc"
},
{
//item 16
CS_ARCH_SPARC,
(cs_mode)(CS_MODE_BIG_ENDIAN + CS_MODE_V9),
"SparcV9"
},
{
//item 17
CS_ARCH_SYSZ,
(cs_mode)0,
"SystemZ"
},
{
//item 18
CS_ARCH_XCORE,
(cs_mode)0,
"XCore"
},
{
//item 19
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS32R6 + CS_MODE_BIG_ENDIAN),
"MIPS-32R6 (Big-endian)"
},
{
//item 20
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS32R6 + CS_MODE_MICRO + CS_MODE_BIG_ENDIAN),
"MIPS-32R6 (Micro+Big-endian)"
},
{
//item 21
CS_ARCH_MIPS,
CS_MODE_MIPS32R6,
"MIPS-32R6 (Little-endian)"
},
{
//item 22
CS_ARCH_MIPS,
(cs_mode)(CS_MODE_MIPS32R6 + CS_MODE_MICRO),
"MIPS-32R6 (Micro+Little-endian)"
},
{
//item 23
CS_ARCH_M68K,
(cs_mode)0,
"M68K"
},
{
//item 24
CS_ARCH_M680X,
(cs_mode)CS_MODE_M680X_6809,
"M680X_M6809"
},
{
//item 25
CS_ARCH_EVM,
(cs_mode)0,
"EVM"
},
};
void LLVMFuzzerInit();
int LLVMFuzzerReturnOneInput(const uint8_t *Data, size_t Size, char * AssemblyText);
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
csh handle;
cs_insn *insn;
cs_err err;
const uint8_t **Datap = &Data;
size_t * Sizep = &Size;
uint64_t address = 0x1000;
char LLVMAssemblyText[80];
char CapstoneAssemblyText[80];
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;
}
LLVMFuzzerInit();
}
if (Data[0] >= sizeof(platforms)/sizeof(platforms[0])) {
return 0;
}
if (LLVMFuzzerReturnOneInput(Data, Size, LLVMAssemblyText) == 1) {
return 0;
}
err = cs_open(platforms[Data[0]].arch, platforms[Data[0]].mode, &handle);
if (err) {
return 0;
}
insn = cs_malloc(handle);
Data++;
Size--;
assert(insn);
if (cs_disasm_iter(handle, Datap, Sizep, &address, insn)) {
snprintf(CapstoneAssemblyText, 80, "\t%s\t%s", insn->mnemonic, insn->op_str);
if (strcmp(CapstoneAssemblyText, LLVMAssemblyText) != 0) {
printf("capstone %s != llvm %s", CapstoneAssemblyText, LLVMAssemblyText);
abort();
}
} else {
printf("capstone failed with llvm %s", LLVMAssemblyText);
abort();
}
cs_free(insn, 1);
cs_close(&handle);
return 0;
}
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