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| author | Richard Henderson <richard.henderson@linaro.org> | 2019-05-10 10:00:52 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-05-22 12:38:54 -0400 |
| commit | 7e4357f612c7d177c3c972c44bae0fd8506ab13d (patch) | |
| tree | e3b8768bb4d9b6014f226f51238d4fde9bdb8261 | |
| parent | de390645675966cce113bf5394445bc1f8d07c85 (diff) | |
| download | focaccia-qemu-7e4357f612c7d177c3c972c44bae0fd8506ab13d.tar.gz focaccia-qemu-7e4357f612c7d177c3c972c44bae0fd8506ab13d.zip | |
target/ppc: Use gen_io_start/end around DARN
Generating a random number counts as I/O, as it cannot be replayed and produce the same results. Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Laurent Vivier <lvivier@redhat.com> Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| -rw-r--r-- | target/ppc/translate.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/target/ppc/translate.c b/target/ppc/translate.c index b5217f632f..4a5de28036 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -1847,13 +1847,22 @@ static void gen_darn(DisasContext *ctx) { int l = L(ctx->opcode); - if (l == 0) { - gen_helper_darn32(cpu_gpr[rD(ctx->opcode)]); - } else if (l <= 2) { - /* Return 64-bit random for both CRN and RRN */ - gen_helper_darn64(cpu_gpr[rD(ctx->opcode)]); - } else { + if (l > 2) { tcg_gen_movi_i64(cpu_gpr[rD(ctx->opcode)], -1); + } else { + if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { + gen_io_start(); + } + if (l == 0) { + gen_helper_darn32(cpu_gpr[rD(ctx->opcode)]); + } else { + /* Return 64-bit random for both CRN and RRN */ + gen_helper_darn64(cpu_gpr[rD(ctx->opcode)]); + } + if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { + gen_io_end(); + gen_stop_exception(ctx); + } } } #endif |