From: Richard Henderson Date: Tue, 25 Aug 2020 03:30:51 +0000 (-0700) Subject: target/microblaze: Remove cpu_R[0] X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e47c22319921e3eeca08d9fe54de940902942576;p=qemu.git target/microblaze: Remove cpu_R[0] Do not initialize cpu_R[0], as this should be totally unused. The cpu_for_read and cpu_for_write functions use a local temp. Tested-by: Edgar E. Iglesias Reviewed-by: Edgar E. Iglesias Signed-off-by: Richard Henderson --- diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index 8f69ca50b2..8c287457a9 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -1842,7 +1842,13 @@ void mb_tcg_init(void) static const struct { TCGv_i32 *var; int ofs; char name[8]; } i32s[] = { - R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), + /* + * Note that r0 is handled specially in reg_for_read + * and reg_for_write. Nothing should touch cpu_R[0]. + * Leave that element NULL, which will assert quickly + * inside the tcg generator functions. + */ + R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), R(9), R(10), R(11), R(12), R(13), R(14), R(15), R(16), R(17), R(18), R(19), R(20), R(21), R(22), R(23), R(24), R(25), R(26), R(27), R(28), R(29), R(30), R(31),