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| author | Peter Maydell <peter.maydell@linaro.org> | 2011-02-21 11:05:21 +0000 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-02-21 15:39:02 +0100 |
| commit | c33171c7f22ba60aad2d011af91d665807b4aced (patch) | |
| tree | ad7f76f04aef68ed0305ecd21bc3958d77fcf6cb /target-arm | |
| parent | 57a8821bc6e4457230075a5c8da5f8a083889686 (diff) | |
| download | qemu-c33171c7f22ba60aad2d011af91d665807b4aced.zip qemu-c33171c7f22ba60aad2d011af91d665807b4aced.tar.gz qemu-c33171c7f22ba60aad2d011af91d665807b4aced.tar.bz2 | |
target-arm: Refactor to pull narrowing decode into separate function
Pull the code which decodes narrowing operations as being either
signed/unsigned saturate or plain out into its own function.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate.c | 45 |
1 files changed, 19 insertions, 26 deletions
diff --git a/target-arm/translate.c b/target-arm/translate.c index 5f377a4..fa20e84 100644 --- a/target-arm/translate.c +++ b/target-arm/translate.c @@ -4164,6 +4164,23 @@ static inline void gen_neon_mull(TCGv_i64 dest, TCGv a, TCGv b, int size, int u) } } +static void gen_neon_narrow_op(int op, int u, int size, TCGv dest, TCGv_i64 src) +{ + if (op) { + if (u) { + gen_neon_unarrow_sats(size, dest, src); + } else { + gen_neon_narrow(size, dest, src); + } + } else { + if (u) { + gen_neon_narrow_satu(size, dest, src); + } else { + gen_neon_narrow_sats(size, dest, src); + } + } +} + /* Translate a NEON data processing instruction. Return nonzero if the instruction is invalid. We process data in a mixture of 32-bit and 64-bit chunks. @@ -4839,19 +4856,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) dead_tmp(tmp3); } tmp = new_tmp(); - if (op == 8) { - if (u) { /* VQSHRUN / VQRSHRUN */ - gen_neon_unarrow_sats(size - 1, tmp, cpu_V0); - } else { /* VSHRN / VRSHRN */ - gen_neon_narrow(size - 1, tmp, cpu_V0); - } - } else { - if (u) { /* VQSHRN / VQRSHRN */ - gen_neon_narrow_satu(size - 1, tmp, cpu_V0); - } else { /* VQSHRN / VQRSHRN */ - gen_neon_narrow_sats(size - 1, tmp, cpu_V0); - } - } + gen_neon_narrow_op(op == 8, u, size - 1, tmp, cpu_V0); neon_store_reg(rd, pass, tmp); } /* for pass */ if (size == 3) { @@ -5439,19 +5444,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn) for (pass = 0; pass < 2; pass++) { neon_load_reg64(cpu_V0, rm + pass); tmp = new_tmp(); - if (op == 36) { - if (q) { /* VQMOVUN */ - gen_neon_unarrow_sats(size, tmp, cpu_V0); - } else { /* VMOVN */ - gen_neon_narrow(size, tmp, cpu_V0); - } - } else { /* VQMOVN */ - if (q) { - gen_neon_narrow_satu(size, tmp, cpu_V0); - } else { - gen_neon_narrow_sats(size, tmp, cpu_V0); - } - } + gen_neon_narrow_op(op == 36, q, size, tmp, cpu_V0); if (pass == 0) { tmp2 = tmp; } else { |