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Re: [Qemu-devel] [PATCH v2 5/5] target-tricore: Add instructions of RC o
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH v2 5/5] target-tricore: Add instructions of RC opcode format |
Date: |
Thu, 30 Oct 2014 08:43:46 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 |
On 10/30/2014 08:59 AM, Bastian Koppelmann wrote:
> Add instructions of RC opcode format.
> Add helper for mul, sha, absdif with signed saturation on overflow.
> Add helper for add, sub, mul with unsigned saturation on overflow.
> Add microcode generator functions:
> * gen_add_CC, which calculates the carry bit.
> * gen_addc_CC, which adds the carry bit to the add and calculates the
> carry bit.
> * gen_absdif, which calculates the absolute difference.
> * gen_mul_i64s/u, which mul two 32 bits val into one 64bit reg.
> * gen_sh_hi, which shifts two 16bit words in one reg.
> * gen_sha_hi, which does a arithmetic shift on two 16bit words.
> * gen_sh_cond, which shifts left a reg by one and writes the result of
> cond into the lsb.
> * gen_accumulating_cond, which ands/ors/xors the result of cond of the
> lsbs
> with the lsb of the result.
> * gen_eqany_bi/hi, which checks ever byte/hword on equality.
>
> Signed-off-by: Bastian Koppelmann <address@hidden>
> ---
> v1 -> v2:
> - gen_sha_hi: Remove mask for low in case shift_count > 0, since deposit
> handles that.
> - gen_sha_hi: Remove mask for high in case shift <= 0, since deposit
> handles that.
Reviewed-by: Richard Henderson <address@hidden>
r~
- [Qemu-devel] [PATCH v2 0/5] Add TriCore BOL, BRC, BRN, BRR and RC instructions, Bastian Koppelmann, 2014/10/31
- [Qemu-devel] [PATCH v2 3/5] target-tricore: Add instructions of BRN opcode format, Bastian Koppelmann, 2014/10/31
- [Qemu-devel] [PATCH v2 4/5] target-tricore: Add instructions of BRR opcode format, Bastian Koppelmann, 2014/10/31
- [Qemu-devel] [PATCH v2 5/5] target-tricore: Add instructions of RC opcode format, Bastian Koppelmann, 2014/10/31
- Re: [Qemu-devel] [PATCH v2 5/5] target-tricore: Add instructions of RC opcode format,
Richard Henderson <=
- [Qemu-devel] [PATCH v2 1/5] target-tricore: Add instructions of BOL opcode format, Bastian Koppelmann, 2014/10/31
- [Qemu-devel] [PATCH v2 2/5] target-tricore: Add instructions of BRC opcode format, Bastian Koppelmann, 2014/10/31