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| author | edgar_igl | 2008-05-03 23:34:39 +0200 |
|---|---|---|
| committer | edgar_igl | 2008-05-03 23:34:39 +0200 |
| commit | aae6b32ae6253f7a6d7ebb1d77f9e34cc2e12553 (patch) | |
| tree | e5dba6edd889ca4f081f0c3efe0b72130f7393c8 /target-cris/translate.c | |
| parent | Skip register moves when the target and the source are the same (diff) | |
| download | qemu-aae6b32ae6253f7a6d7ebb1d77f9e34cc2e12553.tar.gz qemu-aae6b32ae6253f7a6d7ebb1d77f9e34cc2e12553.tar.xz qemu-aae6b32ae6253f7a6d7ebb1d77f9e34cc2e12553.zip | |
CRIS: Convert divide step to TCG.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4313 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-cris/translate.c')
| -rw-r--r-- | target-cris/translate.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/target-cris/translate.c b/target-cris/translate.c index 04632f57ec..76996b5ea4 100644 --- a/target-cris/translate.c +++ b/target-cris/translate.c @@ -375,6 +375,23 @@ static void t_gen_lz_i32(TCGv d, TCGv x) tcg_gen_discard_i32(n); } +static void t_gen_cris_dstep(TCGv d, TCGv s) +{ + int l1; + + l1 = gen_new_label(); + + /* + * d <<= 1 + * if (d >= s) + * d -= s; + */ + tcg_gen_shli_tl(d, d, 1); + tcg_gen_brcond_tl(TCG_COND_LTU, d, s, l1); + tcg_gen_sub_tl(d, d, s); + gen_set_label(l1); +} + /* Extended arithmetics on CRIS. */ static inline void t_gen_add_flag(TCGv d, int flag) { @@ -725,7 +742,7 @@ static void crisv32_alu_op(DisasContext *dc, int op, int rd, int size) } break; case CC_OP_DSTEP: - gen_op_dstep_T0_T1(); + t_gen_cris_dstep(cpu_T[0], cpu_T[1]); break; case CC_OP_BOUND: { |