tcg/ppc: Use TCG_REG_TMP2 for scratch tcg_out_qemu_st

In the fallback when STDBRX is not available, avoid clobbering TCG_REG_TMP1, which might be h.base, which is still in use. Use TCG_REG_TMP2 instead. Cc: [email protected] Fixes: 01a112e ("tcg/ppc: Reorg tcg_out_tlb_read") Signed-off-by: Richard Henderson <[email protected]> Tested-By: Michael Tokarev <[email protected]> (cherry picked from commit 4cabcb8) Signed-off-by: Michael Tokarev <[email protected]>
cube0x8 · Oct 10, 2024 · 854a38f · 854a38f
1 parent 167c8d3
commit 854a38f
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
@@ -2704,9 +2704,9 @@ static void tcg_out_qemu_st(TCGContext *s, TCGReg datalo, TCGReg datahi,
         uint32_t insn = qemu_stx_opc[opc & (MO_BSWAP | MO_SIZE)];
         if (!have_isa_2_06 && insn == STDBRX) {
             tcg_out32(s, STWBRX | SAB(datalo, h.base, h.index));
-            tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, h.index, 4));
+            tcg_out32(s, ADDI | TAI(TCG_REG_TMP2, h.index, 4));
             tcg_out_shri64(s, TCG_REG_R0, datalo, 32);
-            tcg_out32(s, STWBRX | SAB(TCG_REG_R0, h.base, TCG_REG_TMP1));
+            tcg_out32(s, STWBRX | SAB(TCG_REG_R0, h.base, TCG_REG_TMP2));
         } else {
             tcg_out32(s, insn | SAB(datalo, h.base, h.index));
         }