@@ -1057,9 +1057,19 @@ static void tcg_out_movcond(TCGContext *s, TCGCond cond, TCGReg ret,
static void tcg_out_call_int(TCGContext *s, const tcg_insn_unit *arg, bool tail)
{
- /* Note that the ABI requires the called function's address to be
- loaded into T9, even if a direct branch is in range. */
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T9, (uintptr_t)arg);
+ /*
+ * Note that __mips_abicalls requires the called function's address
+ * to be loaded into $25 (t9), even if a direct branch is in range.
+ *
+ * For n64, always drop the pointer into the constant pool.
+ * We can re-use helper addresses often and do not want any
+ * of the longer sequences tcg_out_movi may try.
+ */
+ if (sizeof(uintptr_t) == 8) {
+ tcg_out_movi_pool(s, TCG_REG_T9, (uintptr_t)arg, TCG_REG_TB);
+ } else {
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_T9, (uintptr_t)arg);
+ }
/* But do try a direct branch, allowing the cpu better insn prefetch. */
if (tail) {
Repeated calls to a single helper are common -- especially the ones for softmmu memory access. Prefer the constant pool to longer sequences to increase sharing. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- tcg/mips/tcg-target.c.inc | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) -- 2.25.1