+#define emith_read_r_r_offs(r, rs, offs) \
+ emith_deref_op(0x8b, r, rs, offs)
+
+#define emith_write_r_r_offs(r, rs, offs) \
+ emith_deref_op(0x89, r, rs, offs)
+
+// note: don't use prefixes on this
+#define emith_read8_r_r_offs(r, rs, offs) do { \
+ int r_ = r; \
+ if (!is_abcdx(r)) \
+ r_ = rcache_get_tmp(); \
+ emith_deref_op(0x8a, r_, rs, offs); \
+ if ((r) != r_) { \
+ emith_move_r_r(r, r_); \
+ rcache_free_tmp(r_); \
+ } \
+} while (0)
+
+#define emith_write8_r_r_offs(r, rs, offs) do {\
+ int r_ = r; \
+ if (!is_abcdx(r)) { \
+ r_ = rcache_get_tmp(); \
+ emith_move_r_r(r_, r); \
+ } \
+ emith_deref_op(0x88, r_, rs, offs); \
+ if ((r) != r_) \
+ rcache_free_tmp(r_); \
+} while (0)
+
+#define emith_read16_r_r_offs(r, rs, offs) do { \
+ EMIT(0x66, u8); /* operand override */ \
+ emith_read_r_r_offs(r, rs, offs); \
+} while (0)
+
+#define emith_write16_r_r_offs(r, rs, offs) do { \
+ EMIT(0x66, u8); \
+ emith_write_r_r_offs(r, rs, offs); \
+} while (0)
+
+#define emith_ctx_read(r, offs) \
+ emith_read_r_r_offs(r, CONTEXT_REG, offs)
+
+#define emith_ctx_read_ptr(r, offs) do { \
+ EMIT_REX_IF(1, r, CONTEXT_REG); \
+ emith_deref_op(0x8b, r, CONTEXT_REG, offs); \
+} while (0)
+
+#define emith_ctx_write(r, offs) \
+ emith_write_r_r_offs(r, CONTEXT_REG, offs)
+
+#define emith_ctx_read_multiple(r, offs, cnt, tmpr) do { \
+ int r_ = r, offs_ = offs, cnt_ = cnt; \
+ for (; cnt_ > 0; r_++, offs_ += 4, cnt_--) \
+ emith_ctx_read(r_, offs_); \
+} while (0)
+
+#define emith_ctx_write_multiple(r, offs, cnt, tmpr) do { \
+ int r_ = r, offs_ = offs, cnt_ = cnt; \
+ for (; cnt_ > 0; r_++, offs_ += 4, cnt_--) \
+ emith_ctx_write(r_, offs_); \
+} while (0)
+
+// assumes EBX is free
+#define emith_ret_to_ctx(offs) { \
+ emith_pop(xBX); \
+ emith_ctx_write(xBX, offs); \