diff options
| -rwxr-xr-x | .bin/jrp.c | 92 |
1 files changed, 46 insertions, 46 deletions
diff --git a/.bin/jrp.c b/.bin/jrp.c index 20019245..523a5d49 100755 --- a/.bin/jrp.c +++ b/.bin/jrp.c @@ -14,31 +14,46 @@ typedef unsigned long long uvalue; typedef value *(*fptr)(value *); enum { - OP_PROL = 0x90fc8948e5894855, // push ebp; mov rbp, rsp; mov rsp, rdi - OP_EPIL = 0xc35dec8948e08948, // mov rax, rsp; mov rsp, rbp; pop rbp; ret - OP_CALL = 0x90d0ffe587485f58, // pop rax; pop rdi; xchg rsp, rbp; call rax - OP_RELO = 0x9090666666e58748, // xchg rsp, rbp - OP_PUSH = 0x0000000068906666, // push strict dword 0 - OP_HIGH = 0x00000000042444c7, // mov [rsp + 4], strict dword 0 - OP_DROP = 0x9066666608c48348, // add rsp, 8 - OP_DUP = 0x90906666662434ff, // push qword [rsp] - OP_SWAP = 0x9066666650515859, // pop rcx; pop rax; push rcx; push rax - OP_NEG = 0x90666666241cf748, // neg qword [rsp] - OP_ADD = 0x906666240c014859, // pop rcx; add [rsp], rcx - OP_SUB = 0x906666240c294859, // pop rcx; sub [rsp], rcx - OP_MUL = 0x9050c1af0f485859, // pop rcx; pop rax; imul rax, rcx; push rax - OP_DIV = 0x50f9f74899485859, // pop rcx; pop rax; cqo; idiv rcx; push rax - OP_REM = 0x52f9f74899485859, // pop rcx; pop rax; cqo; idiv rcx; push rdx - OP_NOT = 0x906666662414f748, // not qword [rsp] - OP_AND = 0x906666240c214859, // pop rcx; and [rsp], rcx - OP_OR = 0x906666240c904859, // pop rcx; or [rsp], rcx - OP_XOR = 0x906666240c314859, // pop rcx; xor [rsp], rcx - OP_SHL = 0x9066662424d34859, // pop rcx; shl qword [rsp], cl - OP_SHR = 0x906666242cd34859, // pop rcx; shr qword [rsp], cl + HOP_NOP = 0x90666666, // nop + HOP_RET = 0x906666c3, // ret + HOP_DROP = 0x9066665f, // pop rdi + HOP_DUP = 0x90666657, // push rdi + HOP_SWAP = 0x244c8748, // xchg rdi, [rsp] + HOP_NEG = 0x90dff748, // neg rdi + HOP_ADD = 0xc7014858, // pop rax; add rdi, rax + HOP_QUO = 0x90c78948, // mov rdi, rax + HOP_REM = 0x90d78948, // mov rdi, rdx + HOP_NOT = 0x90d7f748, // not rdi + HOP_AND = 0xc7214858, // pop rax; and rdi, rax + HOP_OR = 0xc7904858, // pop rax; or rdi, rax + HOP_XOR = 0xc7314858, // pop rax; xor rdi, rax }; -#define IMMED_PUSH(x) ((op)(x) << 32) -#define IMMED_HIGH(x) ((op)(x) & 0xffffffff00000000) +enum { + FOP_PROL = 0x5ffc8948e5894855, // push rbp; mov rbp, rsp; mov rsp, rdi; pop rdi + FOP_EPIL = 0x5dec8948e0894857, // push rdi; mov rax, rsp; mov rsp, rbp; pop rbp + FOP_CRT = 0xb848906666e58748, // xchg rsp, rbp; mov rax, strict qword 0 + FOP_CALL = 0x90665fe58748d0ff, // call rax; xchg rsp, rbp; pop rdi + FOP_PUSH = 0xbf48909066666657, // push rdi; mov rdi, strict qword 0 + FOP_SUB = 0x9066665f243c2948, // sub [rsp], rdi; pop rdi + FOP_MUL = 0x906666f8af0f4858, // pop rax; imul rdi, rax + FOP_DIV = 0x9066fff748994858, // pop rax; cqo; idiv rdi + FOP_SHL = 0x5f2424d348f98948, // mov rcx, rdi; shl qword [rsp], cl; pop rdi + FOP_SHR = 0x5f242cd348f98948, // mov rcx, rdi; shr qword [rsp], cl; pop rdi +}; + +#define FOP(a, b) ((op)(b) << 32 | (op)(a)) + +#define JIT_PUSH(p, x) { \ + *(p)++ = FOP_PUSH; \ + *(p)++ = x; \ +} + +#define JIT_CALL(p, fn) { \ + *(p)++ = FOP_CRT; \ + *(p)++ = (op)(fn); \ + *(p)++ = FOP_CALL; \ +} static void rt_print_ascii(value val) { printf("%c\n", (char)val); @@ -66,48 +81,33 @@ static void rt_print_hex(value val) { printf("%llx\n", val); } -#define JIT_PUSH(p, val) { \ - *p++ = OP_PUSH | IMMED_PUSH(val); \ - if (IMMED_HIGH(val)) { \ - *p++ = OP_HIGH | IMMED_HIGH(val); \ - } \ -} - -#define JIT_CALL(p, fn) { \ - JIT_PUSH(p, fn); \ - *p++ = OP_CALL; \ - *p++ = OP_RELO; \ -} - int main() { int error; int page = getpagesize(); value *base = mmap(0, page, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, 0, 0); if (base == MAP_FAILED) err(EX_OSERR, "mmap"); - value *stack = base + page / sizeof(value); + value *stack = base + page / sizeof(value) - 1; op *ops = mmap(0, page, PROT_WRITE, MAP_ANON | MAP_PRIVATE, 0, 0); if (ops == MAP_FAILED) err(EX_OSERR, "mmap"); op *p = ops; - *p++ = OP_PROL; + *p++ = FOP_PROL; JIT_PUSH(p, 7); JIT_PUSH(p, 10); JIT_PUSH(p, 9); - *p++ = OP_MUL; - *p++ = OP_ADD; - *p++ = OP_DUP; - *p++ = OP_DUP; - *p++ = OP_DUP; - *p++ = OP_DUP; - *p++ = OP_DUP; + *p++ = FOP_MUL; + *p++ = FOP(HOP_ADD, HOP_DUP); + *p++ = FOP(HOP_DUP, HOP_DUP); + *p++ = FOP(HOP_DUP, HOP_NOP); JIT_CALL(p, rt_print_ascii); JIT_CALL(p, rt_print_bin); JIT_CALL(p, rt_print_oct); JIT_CALL(p, rt_print_dec); JIT_CALL(p, rt_print_hex); - *p++ = OP_EPIL; + *p++ = FOP_EPIL; + *p++ = FOP(HOP_RET, HOP_NOP); error = mprotect(ops, page, PROT_READ | PROT_EXEC); if (error) err(EX_OSERR, "mprotect"); |