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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-11-04 22:12:24 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-06-05 09:10:02 -0700 |
| commit | 6fbc032cbc83ba80009c4a2a18e4d5578bc9ba35 (patch) | |
| tree | 3cf73c2b64e13cfdaea36dfdd4533e9259d9d563 | |
| parent | 56f2ef9c7958320d574448f555cc3a82e500c485 (diff) | |
| download | qemu-6fbc032cbc83ba80009c4a2a18e4d5578bc9ba35.zip qemu-6fbc032cbc83ba80009c4a2a18e4d5578bc9ba35.tar.gz qemu-6fbc032cbc83ba80009c4a2a18e4d5578bc9ba35.tar.bz2 | |
target/sparc: Implement MWAIT
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| -rw-r--r-- | target/sparc/insns.decode | 1 | ||||
| -rw-r--r-- | target/sparc/translate.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode index a772056..fbcb4f7 100644 --- a/target/sparc/insns.decode +++ b/target/sparc/insns.decode @@ -124,6 +124,7 @@ CALL 01 i:s30 WRTICK_CMPR 10 10111 110000 ..... . ............. @n_r_ri WRSTICK 10 11000 110000 ..... . ............. @n_r_ri WRSTICK_CMPR 10 11001 110000 ..... . ............. @n_r_ri + WRMWAIT 10 11100 110000 ..... . ............. @n_r_ri ] # Before v8, rs1==0 was WRY, and the rest executed as nop. [ diff --git a/target/sparc/translate.c b/target/sparc/translate.c index b10936a..6d0ad38 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -3344,6 +3344,17 @@ static void do_wrpowerdown(DisasContext *dc, TCGv src) TRANS(WRPOWERDOWN, POWERDOWN, do_wr_special, a, supervisor(dc), do_wrpowerdown) +static void do_wrmwait(DisasContext *dc, TCGv src) +{ + /* + * TODO: This is a stub version of mwait, which merely recognizes + * interrupts immediately and does not wait. + */ + dc->base.is_jmp = DISAS_EXIT; +} + +TRANS(WRMWAIT, VIS4, do_wr_special, a, true, do_wrmwait) + static void do_wrpsr(DisasContext *dc, TCGv src) { gen_helper_wrpsr(tcg_env, src); |