The masking in tcg_out_shl was incorrect, producing an illegal instruction, rather than merely unspecified results for the out-of-range shift.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1051 Signed-off-by: Richard Henderson <richard.hender...@linaro.org> --- tcg/aarch64/tcg-target.c.inc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tcg/aarch64/tcg-target.c.inc b/tcg/aarch64/tcg-target.c.inc index 61e284bb5c..d997f7922a 100644 --- a/tcg/aarch64/tcg-target.c.inc +++ b/tcg/aarch64/tcg-target.c.inc @@ -1261,7 +1261,7 @@ static inline void tcg_out_shl(TCGContext *s, TCGType ext, { int bits = ext ? 64 : 32; int max = bits - 1; - tcg_out_ubfm(s, ext, rd, rn, bits - (m & max), max - (m & max)); + tcg_out_ubfm(s, ext, rd, rn, (bits - m) & max, (max - m) & max); } static inline void tcg_out_shr(TCGContext *s, TCGType ext, -- 2.34.1
