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| author | Tom Musta <tommusta@gmail.com> | 2014-12-18 10:34:37 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2015-01-07 16:16:28 +0100 |
| commit | f83c2378bb412b205e9d14dca2f7758d3d23cc88 (patch) | |
| tree | 03204311dc7a9972e2145e46cb31de5bc8169a0d /target-ppc | |
| parent | aeedd58234e7f211bcd6d0ad04cdc60c2a967aca (diff) | |
| download | qemu-f83c2378bb412b205e9d14dca2f7758d3d23cc88.tar.gz | |
target-ppc: Introduce Privileged TM Noops
Add the supervisory Transactional Memory instructions treclaim. and
trechkpt. The implementation is a degenerate one that simply
checks privileged state, TM availability and then sets CR[0] to
0b0000, just like the unprivileged noops.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/translate.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 95a2198462..58d7db33c6 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -9722,6 +9722,40 @@ static void gen_tcheck(DisasContext *ctx) tcg_gen_movi_i32(cpu_crf[crfD(ctx->opcode)], 0x8); } +#if defined(CONFIG_USER_ONLY) +#define GEN_TM_PRIV_NOOP(name) \ +static inline void gen_##name(DisasContext *ctx) \ +{ \ + gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); \ +} + +#else + +#define GEN_TM_PRIV_NOOP(name) \ +static inline void gen_##name(DisasContext *ctx) \ +{ \ + if (unlikely(ctx->pr)) { \ + gen_inval_exception(ctx, POWERPC_EXCP_PRIV_OPC); \ + return; \ + } \ + if (unlikely(!ctx->tm_enabled)) { \ + gen_exception_err(ctx, POWERPC_EXCP_FU, FSCR_IC_TM); \ + return; \ + } \ + /* Because tbegin always fails, the implementation is \ + * simple: \ + * \ + * CR[0] = 0b0 || MSR[TS] || 0b0 \ + * = 0b0 || 0b00 | 0b0 \ + */ \ + tcg_gen_movi_i32(cpu_crf[0], 0); \ +} + +#endif + +GEN_TM_PRIV_NOOP(treclaim); +GEN_TM_PRIV_NOOP(trechkpt); + static opcode_t opcodes[] = { GEN_HANDLER(invalid, 0x00, 0x00, 0x00, 0xFFFFFFFF, PPC_NONE), GEN_HANDLER(cmp, 0x1F, 0x00, 0x00, 0x00400000, PPC_INTEGER), @@ -11153,6 +11187,10 @@ GEN_HANDLER2_E(tsr, "tsr", 0x1F, 0x0E, 0x17, 0x03DFF800, \ PPC_NONE, PPC2_TM), GEN_HANDLER2_E(tcheck, "tcheck", 0x1F, 0x0E, 0x16, 0x007FF800, \ PPC_NONE, PPC2_TM), +GEN_HANDLER2_E(treclaim, "treclaim", 0x1F, 0x0E, 0x1D, 0x03E0F800, \ + PPC_NONE, PPC2_TM), +GEN_HANDLER2_E(trechkpt, "trechkpt", 0x1F, 0x0E, 0x1F, 0x03FFF800, \ + PPC_NONE, PPC2_TM), }; #include "helper_regs.h" |