diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-08-24 20:30:51 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2020-09-01 07:43:35 -0700 |
| commit | e47c22319921e3eeca08d9fe54de940902942576 (patch) | |
| tree | 9abf5dc12ae37edd87628016fc99d09a9f345e35 /target/microblaze | |
| parent | 921afa9daeb90f7d40e0abdec9e13d43c48268dc (diff) | |
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 <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/microblaze')
| -rw-r--r-- | target/microblaze/translate.c | 8 |
1 files changed, 7 insertions, 1 deletions
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), |