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#include <stdint.h>
#include <string.h>
#if defined(__x86_64__)
struct x86_64_regs {
uint64_t rax, rbx, rcx, rdx, rdi, rsi, rbp, r8, r9, r10, r11, r12, r13, r14,
r15;
union {
uint64_t rip;
uint64_t pc;
};
union {
uint64_t rsp;
uint64_t sp;
};
union {
uint64_t rflags;
uint64_t flags;
};
uint8_t zmm_regs[32][64];
};
void afl_persistent_hook(struct x86_64_regs *regs, uint64_t guest_base,
uint8_t *input_buf, uint32_t input_buf_len) {
(void)guest_base; /* unused */
memcpy((void *)regs->rdi, input_buf, input_buf_len);
regs->rsi = input_buf_len;
}
#elif defined(__i386__)
struct x86_regs {
uint32_t eax, ebx, ecx, edx, edi, esi, ebp;
union {
uint32_t eip;
uint32_t pc;
};
union {
uint32_t esp;
uint32_t sp;
};
union {
uint32_t eflags;
uint32_t flags;
};
uint8_t xmm_regs[8][16];
};
void afl_persistent_hook(struct x86_regs *regs, uint64_t guest_base,
uint8_t *input_buf, uint32_t input_buf_len) {
(void)guest_base; /* unused */
void **esp = (void **)regs->esp;
void * arg1 = esp[1];
void **arg2 = &esp[2];
memcpy(arg1, input_buf, input_buf_len);
*arg2 = (void *)input_buf_len;
}
#elif defined(__aarch64__)
struct arm64_regs {
uint64_t x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10;
union {
uint64_t x11;
uint32_t fp_32;
};
union {
uint64_t x12;
uint32_t ip_32;
};
union {
uint64_t x13;
uint32_t sp_32;
};
union {
uint64_t x14;
uint32_t lr_32;
};
union {
uint64_t x15;
uint32_t pc_32;
};
union {
uint64_t x16;
uint64_t ip0;
};
union {
uint64_t x17;
uint64_t ip1;
};
uint64_t x18, x19, x20, x21, x22, x23, x24, x25, x26, x27, x28;
union {
uint64_t x29;
uint64_t fp;
};
union {
uint64_t x30;
uint64_t lr;
};
union {
uint64_t x31;
uint64_t sp;
};
// the zero register is not saved here ofc
uint64_t pc;
uint32_t cpsr;
uint8_t vfp_zregs[32][16 * 16];
uint8_t vfp_pregs[17][32];
uint32_t vfp_xregs[16];
};
void afl_persistent_hook(struct arm64_regs *regs, uint64_t guest_base,
uint8_t *input_buf, uint32_t input_buf_len) {
(void)guest_base; /* unused */
memcpy((void *)regs->x0, input_buf, input_buf_len);
regs->x1 = input_buf_len;
}
#else
#pragma error "Unsupported architecture"
#endif
int afl_persistent_hook_init(void) {
// 1 for shared memory input (faster), 0 for normal input (you have to use
// read(), input_buf will be NULL)
return 1;
}
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