On 9/22/21 20:09, WANG Xuerui wrote:
Signed-off-by: WANG Xuerui <g...@xen0n.name>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
---
tcg/loongarch64/tcg-target.c.inc | 66 ++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
+/* Field Sk16, shifted right by 2; suitable for conditional jumps */
+#define R_LOONGARCH_BR_SK16 256
+/* Field Sd10k16, shifted right by 2; suitable for B and BL */
+#define R_LOONGARCH_BR_SD10K16 257
+
+static bool reloc_br_sk16(tcg_insn_unit *src_rw, const tcg_insn_unit *target)
+{
+ const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw);
+ intptr_t offset = (intptr_t)target - (intptr_t)src_rx;
+
+ tcg_debug_assert((offset & 3) == 0);
+ offset >>= 2;
+ if (offset == sextreg(offset, 0, 16)) {
+ *src_rw |= (offset << 10) & 0x3fffc00;
Alternatively easier to read:
*src_rw = deposit64(*src_rw , 10, 16, offset);
+ return true;
+ }
+
+ return false;
+}
