diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/ppc/tcg-target.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c index 92ef719e40..fd7a3e0425 100644 --- a/tcg/ppc/tcg-target.c +++ b/tcg/ppc/tcg-target.c @@ -1855,12 +1855,10 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args, if (USE_REG_RA) { ptrdiff_t disp = tcg_pcrel_diff(s, tb_ret_addr); - /* If we can use a direct branch, otherwise use the value in RA. - Note that the direct branch is always forward. If it's in - range now, it'll still be in range after the movi. Don't - bother about the 20 bytes where the test here fails but it - would succeed below. */ - if (!in_range_b(disp)) { + /* Use a direct branch if we can, otherwise use the value in RA. + Note that the direct branch is always backward, thus we need + to account for the possibility of 5 insns from the movi. */ + if (!in_range_b(disp - 20)) { tcg_out32(s, MTSPR | RS(TCG_REG_RA) | CTR); tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, args[0]); tcg_out32(s, BCCTR | BO_ALWAYS); |