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| author | Peter Maydell <peter.maydell@linaro.org> | 2014-06-09 15:43:25 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-06-09 16:06:12 +0100 |
| commit | 5acc765c04300f9ac8b7944008bc3ad54c6b032a (patch) | |
| tree | 40ed821cabef90ba15644eaf4fe45b66c4c45e64 /target-arm | |
| parent | aa633469ed902a6d96b3d4013ec5ce32597f0626 (diff) | |
| download | qemu-5acc765c04300f9ac8b7944008bc3ad54c6b032a.zip qemu-5acc765c04300f9ac8b7944008bc3ad54c6b032a.tar.gz qemu-5acc765c04300f9ac8b7944008bc3ad54c6b032a.tar.bz2 | |
target-arm: A64: Implement AES instructions
Implement the AES instructions from the optional Crypto Extensions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1401458125-27977-8-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate-a64.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 6af593a..94b4642 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -85,6 +85,7 @@ typedef void NeonGenWidenFn(TCGv_i64, TCGv_i32); typedef void NeonGenTwoSingleOPFn(TCGv_i32, TCGv_i32, TCGv_i32, TCGv_ptr); typedef void NeonGenTwoDoubleOPFn(TCGv_i64, TCGv_i64, TCGv_i64, TCGv_ptr); typedef void NeonGenOneOpFn(TCGv_i64, TCGv_i64); +typedef void CryptoThreeOpEnvFn(TCGv_ptr, TCGv_i32, TCGv_i32, TCGv_i32); /* initialize TCG globals. */ void a64_translate_init(void) @@ -10549,7 +10550,55 @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn) */ static void disas_crypto_aes(DisasContext *s, uint32_t insn) { - unsupported_encoding(s, insn); + int size = extract32(insn, 22, 2); + int opcode = extract32(insn, 12, 5); + int rn = extract32(insn, 5, 5); + int rd = extract32(insn, 0, 5); + int decrypt; + TCGv_i32 tcg_rd_regno, tcg_rn_regno, tcg_decrypt; + CryptoThreeOpEnvFn *genfn; + + if (!arm_dc_feature(s, ARM_FEATURE_V8_AES) + || size != 0) { + unallocated_encoding(s); + return; + } + + switch (opcode) { + case 0x4: /* AESE */ + decrypt = 0; + genfn = gen_helper_crypto_aese; + break; + case 0x6: /* AESMC */ + decrypt = 0; + genfn = gen_helper_crypto_aesmc; + break; + case 0x5: /* AESD */ + decrypt = 1; + genfn = gen_helper_crypto_aese; + break; + case 0x7: /* AESIMC */ + decrypt = 1; + genfn = gen_helper_crypto_aesmc; + break; + default: + unallocated_encoding(s); + return; + } + + /* Note that we convert the Vx register indexes into the + * index within the vfp.regs[] array, so we can share the + * helper with the AArch32 instructions. + */ + tcg_rd_regno = tcg_const_i32(rd << 1); + tcg_rn_regno = tcg_const_i32(rn << 1); + tcg_decrypt = tcg_const_i32(decrypt); + + genfn(cpu_env, tcg_rd_regno, tcg_rn_regno, tcg_decrypt); + + tcg_temp_free_i32(tcg_rd_regno); + tcg_temp_free_i32(tcg_rn_regno); + tcg_temp_free_i32(tcg_decrypt); } /* C3.6.20 Crypto three-reg SHA |