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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>
This commit is contained in:
Richard Henderson 2020-08-24 20:30:51 -07:00
parent 921afa9dae
commit e47c223199
1 changed files with 7 additions and 1 deletions
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8
target/microblaze/translate.c
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@ -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),