From: Richard Henderson <richard.henderson@linaro.org>
To: Song Gao <gaosong@loongson.cn>, qemu-devel@nongnu.org
Cc: Xiaojuan Yang <yangxiaojuan@loongson.cn>, laurent@vivier.eu
Subject: Re: [PATCH v11 11/26] target/loongarch: Add floating point comparison instruction translation
Date: Sat, 20 Nov 2021 10:02:37 +0100 [thread overview]
Message-ID: <c9c08d6d-e193-969c-f82a-fc36ecff196a@linaro.org> (raw)
In-Reply-To: <1637302410-24632-12-git-send-email-gaosong@loongson.cn>
On 11/19/21 7:13 AM, Song Gao wrote:
> +static bool trans_fcmp_cond_s(DisasContext *ctx, arg_fcmp_cond_s *a)
> +{
> + TCGv var = tcg_temp_new();
> + uint32_t flags;
> + void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
> +
> + fn = (a->fcond & 1 ? gen_helper_fcmp_s_s : gen_helper_fcmp_c_s);
> + flags = get_fcmp_flags(a->fcond >> 1);
> +
> + fn(var, cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk], tcg_constant_i32(flags));
> +
> + tcg_gen_st8_tl(var, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
No need to mask cd; the decode took care of that.
> +#define FCMP_LT 0x0001 /* fp0 < fp1 */
> +#define FCMP_EQ 0x0010 /* fp0 = fp1 */
> +#define FCMP_UN 0x0100 /* unordered */
> +#define FCMP_GT 0x1000 /* fp0 > fp1 */
Any reason why these bits are not sequential?
r~
next prev parent reply other threads:[~2021-11-20 9:03 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-19 6:13 [PATCH v11 00/26] Add LoongArch linux-user emulation support Song Gao
2021-11-19 6:13 ` [PATCH v11 01/26] target/loongarch: Add README Song Gao
2021-11-19 6:13 ` [PATCH v11 02/26] target/loongarch: Add core definition Song Gao
2021-11-19 6:13 ` [PATCH v11 03/26] target/loongarch: Add main translation routines Song Gao
2021-11-19 6:13 ` [PATCH v11 04/26] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
2021-11-20 7:10 ` Richard Henderson
2021-11-20 7:17 ` Richard Henderson
2021-11-20 8:52 ` gaosong
2021-11-20 8:56 ` Richard Henderson
2021-11-22 8:23 ` gaosong
2021-11-22 8:28 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 05/26] target/loongarch: Add fixed point shift " Song Gao
2021-11-20 7:42 ` Richard Henderson
2021-11-20 9:03 ` gaosong
2021-11-19 6:13 ` [PATCH v11 06/26] target/loongarch: Add fixed point bit " Song Gao
2021-11-20 8:05 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 07/26] target/loongarch: Add fixed point load/store " Song Gao
2021-11-20 8:20 ` Richard Henderson
2021-11-20 9:39 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 08/26] target/loongarch: Add fixed point atomic " Song Gao
2021-11-20 8:30 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 09/26] target/loongarch: Add fixed point extra " Song Gao
2021-11-20 8:52 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 10/26] target/loongarch: Add floating point arithmetic " Song Gao
2021-11-20 8:54 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 11/26] target/loongarch: Add floating point comparison " Song Gao
2021-11-20 9:02 ` Richard Henderson [this message]
2021-11-30 8:22 ` gaosong
2021-11-30 8:37 ` Richard Henderson
2021-11-30 8:50 ` gaosong
2021-11-19 6:13 ` [PATCH v11 12/26] target/loongarch: Add floating point conversion " Song Gao
2021-11-19 6:13 ` [PATCH v11 13/26] target/loongarch: Add floating point move " Song Gao
2021-11-19 6:13 ` [PATCH v11 14/26] target/loongarch: Add floating point load/store " Song Gao
2021-11-20 9:36 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 15/26] target/loongarch: Add branch " Song Gao
2021-11-20 9:46 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 16/26] target/loongarch: Add disassembler Song Gao
2021-11-20 9:53 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 17/26] linux-user: Add LoongArch generic header files Song Gao
2021-11-20 9:54 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 18/26] linux-user: Add LoongArch specific structures Song Gao
2021-11-20 10:06 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 19/26] linux-user: Add LoongArch signal support Song Gao
2021-11-20 10:33 ` Richard Henderson
2021-11-22 11:41 ` gaosong
2021-11-22 11:44 ` chen huacai
2021-11-22 12:31 ` Richard Henderson
2021-11-24 2:46 ` gaosong
2021-11-24 7:27 ` Richard Henderson
2021-11-24 7:50 ` gaosong
2021-11-24 9:40 ` Richard Henderson
2021-11-24 10:22 ` gaosong
2021-11-24 10:44 ` Richard Henderson
2021-11-25 3:03 ` gaosong
2021-11-25 10:11 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 20/26] linux-user: Add LoongArch elf support Song Gao
2021-11-20 10:35 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 21/26] linux-user: Add LoongArch syscall support Song Gao
2021-11-20 10:47 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 22/26] linux-user: Add LoongArch cpu_loop support Song Gao
2021-11-20 10:53 ` Richard Henderson
2021-11-19 6:13 ` [PATCH v11 23/26] default-configs: Add loongarch linux-user support Song Gao
2021-11-19 6:13 ` [PATCH v11 24/26] target/loongarch: Add target build suport Song Gao
2021-11-19 6:13 ` [PATCH v11 25/26] target/loongarch: 'make check-tcg' support Song Gao
2021-11-19 6:13 ` [PATCH v11 26/26] scripts: add loongarch64 binfmt config Song Gao
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