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[PULL,09/26] target/mips: Allow executing MSA instructions on Loongson-3A4000

Message ID 20201213201946.236123-10-f4bug@amsat.org (mailing list archive)
State New, archived
Headers show
Series [PULL,01/26] MAINTAINERS: chenhc@lemote.com -> chenhuacai@kernel.org | expand

Commit Message

Philippe Mathieu-Daudé Dec. 13, 2020, 8:19 p.m. UTC 
The Loongson-3A4000 is a GS464V-based processor with MIPS MSA ASE:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg763059.html

Commit af868995e1b correctly set the 'MSA present' bit of Config3
register, but forgot to allow the MSA instructions decoding in
insn_flags, so executing them triggers a 'Reserved Instruction'.

Fix by adding the ASE_MSA mask to insn_flags.

Fixes: af868995e1b ("target/mips: Add Loongson-3 CPU definition")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Huacai Chen <chenhc@lemote.com>
Message-Id: <20201130102228.2395100-1-f4bug@amsat.org>
---
 target/mips/translate_init.c.inc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/target/mips/translate_init.c.inc b/target/mips/translate_init.c.inc
index ea85d5c6a79..79f75ed863c 100644
--- a/target/mips/translate_init.c.inc
+++ b/target/mips/translate_init.c.inc
@@ -832,7 +832,7 @@  const mips_def_t mips_defs[] =
         .mmu_type = MMU_TYPE_R4000,
     },
     {
-        .name = "Loongson-3A4000",
+        .name = "Loongson-3A4000", /* GS464V-based */
         .CP0_PRid = 0x14C000,
         /* 64KB I-cache and d-cache. 4 way with 32 bit cache line size.  */
         .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) |
@@ -885,7 +885,7 @@  const mips_def_t mips_defs[] =
         .CP1_fcr31_rw_bitmask = 0xFF83FFFF,
         .SEGBITS = 48,
         .PABITS = 48,
-        .insn_flags = CPU_LOONGSON3A,
+        .insn_flags = CPU_LOONGSON3A | ASE_MSA,
         .mmu_type = MMU_TYPE_R4000,
     },
     {