haraldwolff/qemu-patch-raspberry4
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SPARC LEON power-down support added

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Signed-off-by: Ronald Hecht <address@hidden>
Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Ronald Hecht 2013-02-19 12:45:07 +01:00 committed by Blue Swirl
parent 7a0a9c2c64
commit d1c36ba707
5 changed files with 19 additions and 1 deletions
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2
target-sparc/cpu.c
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@ -586,7 +586,7 @@ static const sparc_def_t sparc_defs[] = {
.mmu_trcr_mask = 0xffffffff,
.nwindows = 8,
.features = CPU_DEFAULT_FEATURES | CPU_FEATURE_TA0_SHUTDOWN |
CPU_FEATURE_ASR17 | CPU_FEATURE_CACHE_CTRL,
CPU_FEATURE_ASR17 | CPU_FEATURE_CACHE_CTRL | CPU_FEATURE_POWERDOWN,
},
#endif
};

1
target-sparc/cpu.h
View file

@ -270,6 +270,7 @@ typedef struct sparc_def_t {
#define CPU_FEATURE_TA0_SHUTDOWN (1 << 14) /* Shutdown on "ta 0x0" */
#define CPU_FEATURE_ASR17 (1 << 15)
#define CPU_FEATURE_CACHE_CTRL (1 << 16)
#define CPU_FEATURE_POWERDOWN (1 << 17)
#ifndef TARGET_SPARC64
#define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP | \

11
target-sparc/helper.c
View file

@ -225,3 +225,14 @@ target_ulong helper_tsubcctv(CPUSPARCState *env, target_ulong src1,
cpu_restore_state(env, GETPC());
helper_raise_exception(env, TT_TOVF);
}
#ifndef TARGET_SPARC64
void helper_power_down(CPUSPARCState *env)
{
env->halted = 1;
env->exception_index = EXCP_HLT;
env->pc = env->npc;
env->npc = env->pc + 4;
cpu_loop_exit(env);
}
#endif

1
target-sparc/helper.h
View file

@ -4,6 +4,7 @@
DEF_HELPER_1(rett, void, env)
DEF_HELPER_2(wrpsr, void, env, tl)
DEF_HELPER_1(rdpsr, tl, env)
DEF_HELPER_1(power_down, void, env)
#else
DEF_HELPER_2(wrpil, void, env, tl)
DEF_HELPER_2(wrpstate, void, env, tl)

5
target-sparc/translate.c
View file

@ -3642,6 +3642,11 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
in the SPARCv8
manual, nop on the
microSPARC II */
if ((rd == 0x13) && (dc->def->features &
CPU_FEATURE_POWERDOWN)) {
/* LEON3 power-down */
gen_helper_power_down(cpu_env);
}
break;
#else
case 0x2: /* V9 wrccr */