diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-06-27 08:55:19 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-07-01 09:57:01 +1000 |
| commit | 4b236b621bf090509c4a0be372edfd31d13b289a (patch) | |
| tree | 6a68f8e5a2f3dafbc1762427efc37abd3855219a /target-ppc/translate_init.c | |
| parent | b378bb0948277d71c78bc6d0c1ef80a253aafc80 (diff) | |
ppc: Initial HDEC support
The current behaviour isn't completely right, as for the DEC, we
don't properly re-arm when wrapping around, but I will fix this
in a separate patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[clg: fixed checkpatch.pl errors ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target-ppc/translate_init.c')
| -rw-r--r-- | target-ppc/translate_init.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index af7a790f44..a2d9ff2dd1 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -277,6 +277,32 @@ static void spr_read_purr (DisasContext *ctx, int gprn, int sprn) { gen_helper_load_purr(cpu_gpr[gprn], cpu_env); } + +/* HDECR */ +static void spr_read_hdecr(DisasContext *ctx, int gprn, int sprn) +{ + if (ctx->tb->cflags & CF_USE_ICOUNT) { + gen_io_start(); + } + gen_helper_load_hdecr(cpu_gpr[gprn], cpu_env); + if (ctx->tb->cflags & CF_USE_ICOUNT) { + gen_io_end(); + gen_stop_exception(ctx); + } +} + +static void spr_write_hdecr(DisasContext *ctx, int sprn, int gprn) +{ + if (ctx->tb->cflags & CF_USE_ICOUNT) { + gen_io_start(); + } + gen_helper_store_hdecr(cpu_env, cpu_gpr[gprn]); + if (ctx->tb->cflags & CF_USE_ICOUNT) { + gen_io_end(); + gen_stop_exception(ctx); + } +} + #endif #endif @@ -7824,6 +7850,10 @@ static void gen_spr_power5p_lpar(CPUPPCState *env) SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_lpcr, KVM_REG_PPC_LPCR, LPCR_LPES0 | LPCR_LPES1); + spr_register_hv(env, SPR_HDEC, "HDEC", + SPR_NOACCESS, SPR_NOACCESS, + SPR_NOACCESS, SPR_NOACCESS, + &spr_read_hdecr, &spr_write_hdecr, 0); #endif } |