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From: Tsukasa OI <research_trasio@irq.a4lg.com>
To: Palmer Dabbelt <palmer@dabbelt.com>,
	Andrew Waterman <andrew@sifive.com>,
	Jim Wilson <jim.wilson.gcc@gmail.com>,
	Nelson Chu <nelson@rivosinc.com>,
	Kito Cheng <kito.cheng@sifive.com>
Cc: binutils@sourceware.org
Subject: [PING^1][PATCH] RISC-V: Prohibit combination of 'E' and 'H'
Date: Wed, 30 Aug 2023 13:12:15 +0900	[thread overview]
Message-ID: <fe4ca14b-256d-4741-b526-d3ad5d1cc3ce@irq.a4lg.com> (raw)
In-Reply-To: <cc00abb4a434cdb7982eb92e3d2ab15868a745d2.1691468158.git.research_trasio@irq.a4lg.com>

Ping.

On 2023/08/08 13:16, Tsukasa OI wrote:
> From: Tsukasa OI <research_trasio@irq.a4lg.com>
> 
> According to the ratified privileged specification (version 20211203),
> it says:
> 
>> The hypervisor extension depends on an "I" base integer ISA with 32 x
>> registers (RV32I or RV64I), not RV32E, which has only 16 x registers.
> 
> Also in the latest draft, it also prohibits RV64E with the 'H' extension.
> This commit prohibits the combination of 'E' and 'H' extensions.
> 
> bfd/ChangeLog:
> 
> 	* elfxx-riscv.c (riscv_parse_check_conflicts): Prohibit 'E' and
> 	'H' combinations.
> 
> gas/ChangeLog:
> 
> 	* testsuite/gas/riscv/march-fail-rv32eh.d: New failure test to
> 	make sure that RV32E + 'H' is prohibited.
> 	* testsuite/gas/riscv/march-fail-rv32eh.l: Likewise.
> ---
>  bfd/elfxx-riscv.c                           | 7 +++++++
>  gas/testsuite/gas/riscv/march-fail-rv32eh.d | 3 +++
>  gas/testsuite/gas/riscv/march-fail-rv32eh.l | 2 ++
>  3 files changed, 12 insertions(+)
>  create mode 100644 gas/testsuite/gas/riscv/march-fail-rv32eh.d
>  create mode 100644 gas/testsuite/gas/riscv/march-fail-rv32eh.l
> 
> diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
> index ee4598729480..1655bb2df364 100644
> --- a/bfd/elfxx-riscv.c
> +++ b/bfd/elfxx-riscv.c
> @@ -1949,6 +1949,13 @@ riscv_parse_check_conflicts (riscv_parse_subset_t *rps)
>  	(_("rv%d does not support the `e' extension"), xlen);
>        no_conflict = false;
>      }
> +  if (riscv_subset_supports (rps, "e")
> +      && riscv_subset_supports (rps, "h"))
> +    {
> +      rps->error_handler
> +	(_("rv%de does not support the `h' extension"), xlen);
> +      no_conflict = false;
> +    }
>    if (riscv_lookup_subset (rps->subset_list, "q", &subset)
>        && (subset->major_version < 2 || (subset->major_version == 2
>  					&& subset->minor_version < 2))
> diff --git a/gas/testsuite/gas/riscv/march-fail-rv32eh.d b/gas/testsuite/gas/riscv/march-fail-rv32eh.d
> new file mode 100644
> index 000000000000..b57199efa0f6
> --- /dev/null
> +++ b/gas/testsuite/gas/riscv/march-fail-rv32eh.d
> @@ -0,0 +1,3 @@
> +#as: -march=rv32eh
> +#source: empty.s
> +#error_output: march-fail-rv32eh.l
> diff --git a/gas/testsuite/gas/riscv/march-fail-rv32eh.l b/gas/testsuite/gas/riscv/march-fail-rv32eh.l
> new file mode 100644
> index 000000000000..c7cd1ccc2a89
> --- /dev/null
> +++ b/gas/testsuite/gas/riscv/march-fail-rv32eh.l
> @@ -0,0 +1,2 @@
> +.*Assembler messages:
> +.*Error: .*rv32e does not support the `h' extension
> 
> base-commit: d734d43a048b33ee12df2c06c2e782887e9715f6

  reply	other threads:[~2023-08-30  4:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-08  4:16 [PATCH] " Tsukasa OI
2023-08-30  4:12 ` Tsukasa OI [this message]
2023-09-05  1:14   ` [PING^1][PATCH] " Nelson Chu
2023-09-05  1:43     ` Tsukasa OI

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