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target/sparc: implement asr17 feature for smp 

This allows the guest program to know its cpu id.

Co-developed-by: Frederic Konrad <konrad.frederic@yahoo.fr>
Signed-off-by: Clément Chigot <chigot@adacore.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240131085047.18458-6-chigot@adacore.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Clément Chigot 2024-01-31 09:50:43 +01:00 committed by Philippe Mathieu-Daudé
parent 0fa5cd4a60
commit c92948f22b
3 changed files with 20 additions and 10 deletions
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16
target/sparc/helper.c
View File

@ -212,4 +212,20 @@ void helper_power_down(CPUSPARCState *env)
env->npc = env->pc + 4; env->npc = env->pc + 4;
cpu_loop_exit(cs); cpu_loop_exit(cs);
} }
target_ulong helper_rdasr17(CPUSPARCState *env)
{
CPUState *cs = env_cpu(env);
target_ulong val;
/*
* TODO: There are many more fields to be filled,
* some of which are writable.
*/
val = env->def.nwindows - 1; /* [4:0] NWIN */
val |= 1 << 8; /* [8] V8 */
val |= (cs->cpu_index) << 28; /* [31:28] INDEX */
return val;
}
#endif #endif

1
target/sparc/helper.h
View File

@ -2,6 +2,7 @@
DEF_HELPER_1(rett, void, env) DEF_HELPER_1(rett, void, env)
DEF_HELPER_2(wrpsr, void, env, tl) DEF_HELPER_2(wrpsr, void, env, tl)
DEF_HELPER_1(rdpsr, tl, env) DEF_HELPER_1(rdpsr, tl, env)
DEF_HELPER_1(rdasr17, tl, env)
DEF_HELPER_1(power_down, void, env) DEF_HELPER_1(power_down, void, env)
#else #else
DEF_HELPER_FLAGS_2(wrpil, TCG_CALL_NO_RWG, void, env, tl) DEF_HELPER_FLAGS_2(wrpil, TCG_CALL_NO_RWG, void, env, tl)

13
target/sparc/translate.c
View File

@ -37,6 +37,7 @@
#ifdef TARGET_SPARC64 #ifdef TARGET_SPARC64
# define gen_helper_rdpsr(D, E) qemu_build_not_reached() # define gen_helper_rdpsr(D, E) qemu_build_not_reached()
# define gen_helper_rdasr17(D, E) qemu_build_not_reached()
# define gen_helper_rett(E) qemu_build_not_reached() # define gen_helper_rett(E) qemu_build_not_reached()
# define gen_helper_power_down(E) qemu_build_not_reached() # define gen_helper_power_down(E) qemu_build_not_reached()
# define gen_helper_wrpsr(E, S) qemu_build_not_reached() # define gen_helper_wrpsr(E, S) qemu_build_not_reached()
@ -2382,16 +2383,8 @@ static bool trans_RDY(DisasContext *dc, arg_RDY *a)
static TCGv do_rd_leon3_config(DisasContext *dc, TCGv dst) static TCGv do_rd_leon3_config(DisasContext *dc, TCGv dst)
{ {
uint32_t val; gen_helper_rdasr17(dst, tcg_env);
return dst;
/*
* TODO: There are many more fields to be filled,
* some of which are writable.
*/
val = dc->def->nwindows - 1; /* [4:0] NWIN */
val |= 1 << 8; /* [8] V8 */
return tcg_constant_tl(val);
} }
TRANS(RDASR17, ASR17, do_rd_special, true, a->rd, do_rd_leon3_config) TRANS(RDASR17, ASR17, do_rd_special, true, a->rd, do_rd_leon3_config)