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| author | Aurelien Jarno <aurelien@aurel32.net> | 2013-04-20 08:56:16 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-04-26 23:02:42 +0200 |
| commit | fcfda20f2f5df30d88d087d443c1c08649df8827 (patch) | |
| tree | 6e26b28a40150f21c7fb3ed62e967b7a5fbaea5d /target-ppc | |
| parent | 9c2627b09d1bdee8a58730bbf48c76be48bd659f (diff) | |
| download | qemu-fcfda20f2f5df30d88d087d443c1c08649df8827.zip qemu-fcfda20f2f5df30d88d087d443c1c08649df8827.tar.gz qemu-fcfda20f2f5df30d88d087d443c1c08649df8827.tar.bz2 | |
target-ppc: emulate cmpb instruction
Needed for Power ISA version 2.05 compliance.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/helper.h | 1 | ||||
| -rw-r--r-- | target-ppc/int_helper.c | 15 | ||||
| -rw-r--r-- | target-ppc/translate.c | 8 |
3 files changed, 24 insertions, 0 deletions
diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 07397b2..56814b5 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -36,6 +36,7 @@ DEF_HELPER_3(mulldo, i64, env, i64, i64) DEF_HELPER_FLAGS_1(cntlzw, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(popcntb, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl) +DEF_HELPER_FLAGS_2(cmpb, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_3(sraw, tl, env, tl, tl) #if defined(TARGET_PPC64) DEF_HELPER_FLAGS_1(cntlzd, TCG_CALL_NO_RWG_SE, tl, tl) diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 54eca9b..e50bdd2 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -53,6 +53,21 @@ target_ulong helper_cntlzd(target_ulong t) } #endif +target_ulong helper_cmpb(target_ulong rs, target_ulong rb) +{ + target_ulong mask = 0xff; + target_ulong ra = 0; + int i; + + for (i = 0; i < sizeof(target_ulong); i++) { + if ((rs & mask) == (rb & mask)) { + ra |= mask; + } + mask <<= 8; + } + return ra; +} + /* shift right arithmetic helper */ target_ulong helper_sraw(CPUPPCState *env, target_ulong value, target_ulong shift) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 6cc7893..4d477d2 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -739,6 +739,13 @@ static void gen_isel(DisasContext *ctx) tcg_temp_free_i32(t0); } +/* cmpb: PowerPC 2.05 specification */ +static void gen_cmpb(DisasContext *ctx) +{ + gen_helper_cmpb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], + cpu_gpr[rB(ctx->opcode)]); +} + /*** Integer arithmetic ***/ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0, @@ -8463,6 +8470,7 @@ GEN_HANDLER(cmp, 0x1F, 0x00, 0x00, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpi, 0x0B, 0xFF, 0xFF, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpl, 0x1F, 0x00, 0x01, 0x00400000, PPC_INTEGER), GEN_HANDLER(cmpli, 0x0A, 0xFF, 0xFF, 0x00400000, PPC_INTEGER), +GEN_HANDLER_E(cmpb, 0x1F, 0x1C, 0x0F, 0x00000001, PPC_NONE, PPC2_ISA205), GEN_HANDLER(isel, 0x1F, 0x0F, 0xFF, 0x00000001, PPC_ISEL), GEN_HANDLER(addi, 0x0E, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(addic, 0x0C, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), |