From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org
Cc: "Huacai Chen" <chenhuacai@kernel.org>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"Paul Burton" <paulburton@kernel.org>
Subject: [PULL 12/17] target/mips: Fix DEXTRV_S.H DSP opcode
Date: Mon, 18 Oct 2021 00:52:40 +0200 [thread overview]
Message-ID: <20211017225245.2618892-13-f4bug@amsat.org> (raw)
In-Reply-To: <20211017225245.2618892-1-f4bug@amsat.org>
While for the DEXTR_S.H opcode:
"The shift argument is provided in the instruction."
For the DEXTRV_S.H opcode we have:
"The five least-significant bits of register rs provide the
shift argument, interpreted as a five-bit unsigned integer;
the remaining bits in rs are ignored."
While 't1' contains the 'rs' register content (the shift value
for DEXTR_S.H), we need to load the value of 'rs' for DEXTRV_S.H.
We can directly use the v1_t TCG register which already contains
this shift value.
Fixes: b53371ed5d4 ("target-mips: Add ASE DSP accumulator instructions")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211013215652.1764551-1-f4bug@amsat.org>
---
target/mips/tcg/translate.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/target/mips/tcg/translate.c b/target/mips/tcg/translate.c
index 5fdeb67e82b..519b00121f6 100644
--- a/target/mips/tcg/translate.c
+++ b/target/mips/tcg/translate.c
@@ -13796,8 +13796,7 @@ static void gen_mipsdsp_accinsn(DisasContext *ctx, uint32_t op1, uint32_t op2,
break;
case OPC_DEXTRV_S_H:
tcg_gen_movi_tl(t0, v2);
- tcg_gen_movi_tl(t1, v1);
- gen_helper_dextr_s_h(cpu_gpr[ret], t0, t1, cpu_env);
+ gen_helper_dextr_s_h(cpu_gpr[ret], t0, v1_t, cpu_env);
break;
case OPC_DEXTRV_L:
tcg_gen_movi_tl(t0, v2);
--
2.31.1
next prev parent reply other threads:[~2021-10-17 23:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-17 22:52 [PULL 00/17] MIPS patches for 2021-10-18 Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 01/17] target/mips: Check nanoMIPS DSP MULT[U] accumulator with Release 6 Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 02/17] hw/mips/boston: Massage memory map information Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 03/17] hw/mips/boston: Allow loading elf kernel and dtb Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 04/17] hw/mips/boston: Add FDT generator Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 05/17] target/mips: Remove unused register from MSA 2R/2RF instruction format Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 06/17] target/mips: Use tcg_constant_i32() in gen_msa_elm_df() Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 07/17] target/mips: Use tcg_constant_i32() in gen_msa_2rf() Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 08/17] target/mips: Use tcg_constant_i32() in gen_msa_2r() Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 09/17] target/mips: Use tcg_constant_i32() in gen_msa_3rf() Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 10/17] target/mips: Use explicit extract32() calls in gen_msa_i5() Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 11/17] target/mips: Use tcg_constant_tl() in gen_compute_compact_branch() Philippe Mathieu-Daudé
2021-10-17 22:52 ` Philippe Mathieu-Daudé [this message]
2021-10-17 22:52 ` [PULL 13/17] target/mips: Remove unused TCG temporary in gen_mipsdsp_accinsn() Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 14/17] via-ide: Set user_creatable to false Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 15/17] vt82c686: Move common code to via_isa_realize Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 16/17] vt82c686: Add a method to VIA_ISA to raise ISA interrupts Philippe Mathieu-Daudé
2021-10-17 22:52 ` [PULL 17/17] via-ide: Avoid using isa_get_irq() Philippe Mathieu-Daudé
2021-10-18 18:41 ` [PULL 00/17] MIPS patches for 2021-10-18 Richard Henderson
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