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#pragma once
#include "dis.h"
static inline int size_of_MOVi64(uint64_t val) {
int num_nybbles = val == 0 ? 1 : ((64 - __builtin_clzll(val) + 15) / 16);
return 4 * num_nybbles;
}
static inline void MOVi64(void **codep, int Rd, uint64_t val) {
int shift_nybbles = 0;
do {
int k = shift_nybbles != 0;
op32(codep, 0xd2800000 | k << 29 | Rd | (val & 0xffff) << 5 |
shift_nybbles << 21);
shift_nybbles++;
val >>= 16;
} while(val);
}
static inline void LDRxi(void **codep, int Rt, int Rn, uint32_t off,
bool regsize_64, enum pcrel_load_mode load_mode) {
int size, opc;
bool sign, simd;
switch (load_mode) {
case PLM_ADR: return;
case PLM_U8: size = 0; sign = false; simd = false; break;
case PLM_S8: size = 0; sign = true; simd = false; break;
case PLM_U16: size = 1; sign = false; simd = false; break;
case PLM_S16: size = 1; sign = true; simd = false; break;
case PLM_U32: size = 2; sign = false; simd = false; break;
case PLM_S32: size = 2; sign = true; simd = false; break;
case PLM_U64: size = 3; sign = false; simd = false; break;
case PLM_U32_SIMD: size = 2; opc = 1; simd = true; break;
case PLM_U64_SIMD: size = 3; opc = 1; simd = true; break;
case PLM_U128_SIMD: size = 0; opc = 3; simd = true; break;
default: __builtin_abort();
}
if (simd) {
off /= 1 << (size | (opc & 1) << 2);
} else {
off /= 1 << size;
opc = sign ? (regsize_64 ? 2 : 3) : 1;
}
op32(codep, 0x39000000 | Rt | Rn << 5 | off << 10 | opc << 22 | simd << 26 |
size << 30);
}
static inline void ADRP_ADD(void **codep, int reg, uint64_t pc, uint64_t dpc) {
uint64_t diff = (dpc & ~0xfff) - (pc & ~0xfff);
/* ADRP reg, dpc */
op32(codep, 0x90000000 | reg | (diff & 0x3000) << 17 |
(diff & 0x1ffffc000) >> 9);
uint32_t lo = dpc & 0xfff;
if (lo) {
/* ADD reg, reg, #lo */
op32(codep, 0x91000000 | reg | reg << 5 | lo << 10);
}
}
static inline void BR(void **codep, int reg, bool link) {
op32(codep, 0xd61f0000 | reg << 5 | link << 21);
}
static inline void Bccrel(void **codep, int cc, int offset) {
op32(codep, 0x54000000 | (offset / 4) << 5 | cc);
}
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