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| author |   Vince Weaver <vince@csl.cornell.edu> | 2009-09-17 15:28:52 -0400 |
|---|---|---|
| committer |   Aurelien Jarno <aurelien@aurel32.net> | 2009-09-18 17:22:37 +0200 |
| commit | dbf95805889fc3d7502e39bbb4c8b7ea5c24fffd (patch) | |
| tree | 440396b7d15eba72fba0541a3f47e9e2186027c1 /target-alpha | |
| parent | target-ppc: optimize slw/srw/sld/srd (diff) | |
| download | qemu-kvm-dbf95805889fc3d7502e39bbb4c8b7ea5c24fffd.tar.gz qemu-kvm-dbf95805889fc3d7502e39bbb4c8b7ea5c24fffd.tar.bz2 qemu-kvm-dbf95805889fc3d7502e39bbb4c8b7ea5c24fffd.zip | |
target-alpha: fix extlh instruction
The extlh instruction on Alpha currently doesn't work properly.
It's a combination of a cut/paste bug (16 where it should be 32) as well
as a "shift by 64" bug.
Signed-off-by: Vince Weaver <vince@csl.cornell.edu>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-alpha')
| -rw-r--r-- | target-alpha/translate.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/target-alpha/translate.c b/target-alpha/translate.c index 9d2bc45d8..9e7e9b2d8 100644 --- a/target-alpha/translate.c +++ b/target-alpha/translate.c @@ -524,14 +524,15 @@ static inline void gen_ext_h(void(*tcg_gen_ext_i64)(TCGv t0, TCGv t1), else tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[ra]); } else { - TCGv tmp1, tmp2; + TCGv tmp1; tmp1 = tcg_temp_new(); + tcg_gen_andi_i64(tmp1, cpu_ir[rb], 7); tcg_gen_shli_i64(tmp1, tmp1, 3); - tmp2 = tcg_const_i64(64); - tcg_gen_sub_i64(tmp1, tmp2, tmp1); - tcg_temp_free(tmp2); + tcg_gen_neg_i64(tmp1, tmp1); + tcg_gen_andi_i64(tmp1, tmp1, 0x3f); tcg_gen_shl_i64(cpu_ir[rc], cpu_ir[ra], tmp1); + tcg_temp_free(tmp1); } if (tcg_gen_ext_i64) @@ -1316,7 +1317,7 @@ static inline int translate_one(DisasContext *ctx, uint32_t insn) break; case 0x6A: /* EXTLH */ - gen_ext_h(&tcg_gen_ext16u_i64, ra, rb, rc, islit, lit); + gen_ext_h(&tcg_gen_ext32u_i64, ra, rb, rc, islit, lit); break; case 0x72: /* MSKQH */ |