From: Nelson Chu <nelson.chu@sifive.com>
To: Binutils <binutils@sourceware.org>, gdb-patches@sourceware.org
Cc: Palmer Dabbelt <palmer@dabbelt.com>,
Kito Cheng <kito.cheng@sifive.com>, Jim Wilson <jimw@sifive.com>,
Andrew Waterman <andrew@sifive.com>,
Andrew Burgess <andrew.burgess@embecosm.com>,
Alex Bradbury <asb@lowrisc.org>,
Maxim Blinov <maxim.blinov@embecosm.com>
Subject: Re: [PATCH v2 8/9] RISC-V: Disassembler dumps the CSR according to the chosen privilege spec.
Date: Tue, 19 May 2020 17:08:26 +0800 [thread overview]
Message-ID: <CAJYME4EL4iE59aufqOqsv1ZoFsmUq_7esjdxu2SbG=ii0_KSgA@mail.gmail.com> (raw)
In-Reply-To: <1588733747-18787-9-git-send-email-nelson.chu@sifive.com>
PING :)
On Wed, May 6, 2020 at 10:56 AM Nelson Chu <nelson.chu@sifive.com> wrote:
>
> Add new disassembler option -Mpriv-spec=[1.9|1.9.1|1.10|1.11] to dump the CSR
> correctly. Report error message if the chosen priv version isn't supported.
> Dump the CSR address direclty if it is invalid for the chosen spec.
>
> gas/
> * testsuite/gas/riscv/priv-reg.d: Removed.
> * testsuite/gas/riscv/priv-reg-version-1p9.d: New test case. Dump the
> CSR according to the priv spec 1.9.
> * testsuite/gas/riscv/priv-reg-version-1p9p1.d: New test case. Dump the
> CSR according to the priv spec 1.9.1.
> * testsuite/gas/riscv/priv-reg-version-1p10.d: New test case. Dump the
> CSR according to the priv spec 1.10.
> * testsuite/gas/riscv/priv-reg-version-1p11.d: New test case. Dump the
> CSR according to the priv spec 1.11.
>
> opcodes/
> * riscv-dis.c: Add new disassembler option -Mpriv-spec to dump the CSR
> according to the chosen version. Build a hash table riscv_csr_hash to
> store the valid CSR for the chosen pirv verison. Dump the direct
> CSR address rather than it's name if it is invalid.
> (parse_riscv_dis_option_without_args): New function. Parse the options
> without arguments.
> (parse_riscv_dis_option): Call parse_riscv_dis_option_without_args to
> parse the options without arguments first, and then handle the options
> with arguments. Add the new option -Mpriv-spec, which has argument.
> ---
> gas/testsuite/gas/riscv/priv-reg-version-1p10.d | 257 +++++++++++++++++++++++
> gas/testsuite/gas/riscv/priv-reg-version-1p11.d | 257 +++++++++++++++++++++++
> gas/testsuite/gas/riscv/priv-reg-version-1p9.d | 257 +++++++++++++++++++++++
> gas/testsuite/gas/riscv/priv-reg-version-1p9p1.d | 257 +++++++++++++++++++++++
> gas/testsuite/gas/riscv/priv-reg.d | 256 ----------------------
> opcodes/riscv-dis.c | 69 +++++-
> 6 files changed, 1090 insertions(+), 263 deletions(-)
> create mode 100644 gas/testsuite/gas/riscv/priv-reg-version-1p10.d
> create mode 100644 gas/testsuite/gas/riscv/priv-reg-version-1p11.d
> create mode 100644 gas/testsuite/gas/riscv/priv-reg-version-1p9.d
> create mode 100644 gas/testsuite/gas/riscv/priv-reg-version-1p9p1.d
> delete mode 100644 gas/testsuite/gas/riscv/priv-reg.d
>
> diff --git a/gas/testsuite/gas/riscv/priv-reg-version-1p10.d b/gas/testsuite/gas/riscv/priv-reg-version-1p10.d
> new file mode 100644
> index 0000000..3739b89
> --- /dev/null
> +++ b/gas/testsuite/gas/riscv/priv-reg-version-1p10.d
> @@ -0,0 +1,257 @@
> +#as: -march=rv32if -mpriv-spec=1.10
> +#source: priv-reg.s
> +#objdump: -dr -Mpriv-spec=1.10
> +
> +.*:[ ]+file format .*
> +
> +
> +Disassembly of section .text:
> +
> +0+000 <.text>:
> +[ ]+[0-9a-f]+:[ ]+00002573[ ]+csrr[ ]+a0,ustatus
> +[ ]+[0-9a-f]+:[ ]+00402573[ ]+csrr[ ]+a0,uie
> +[ ]+[0-9a-f]+:[ ]+00502573[ ]+csrr[ ]+a0,utvec
> +[ ]+[0-9a-f]+:[ ]+04002573[ ]+csrr[ ]+a0,uscratch
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> +[ ]+[0-9a-f]+:[ ]+04302573[ ]+csrr[ ]+a0,utval
> +[ ]+[0-9a-f]+:[ ]+04402573[ ]+csrr[ ]+a0,uip
> +[ ]+[0-9a-f]+:[ ]+00102573[ ]+frflags[ ]+a0
> +[ ]+[0-9a-f]+:[ ]+00202573[ ]+frrm[ ]+a0
> +[ ]+[0-9a-f]+:[ ]+00302573[ ]+frcsr[ ]+a0
> +[ ]+[0-9a-f]+:[ ]+c0002573[ ]+rdcycle[ ]+a0
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> diff --git a/gas/testsuite/gas/riscv/priv-reg-version-1p11.d b/gas/testsuite/gas/riscv/priv-reg-version-1p11.d
> new file mode 100644
> index 0000000..ca48abcc
> --- /dev/null
> +++ b/gas/testsuite/gas/riscv/priv-reg-version-1p11.d
> @@ -0,0 +1,257 @@
> +#as: -march=rv32if -mpriv-spec=1.11
> +#source: priv-reg.s
> +#objdump: -dr -Mpriv-spec=1.11
> +
> +.*:[ ]+file format .*
> +
> +
> +Disassembly of section .text:
> +
> +0+000 <.text>:
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> diff --git a/gas/testsuite/gas/riscv/priv-reg-version-1p9.d b/gas/testsuite/gas/riscv/priv-reg-version-1p9.d
> new file mode 100644
> index 0000000..fa3c08f
> --- /dev/null
> +++ b/gas/testsuite/gas/riscv/priv-reg-version-1p9.d
> @@ -0,0 +1,257 @@
> +#as: -march=rv32if -mpriv-spec=1.9
> +#source: priv-reg.s
> +#objdump: -dr -Mpriv-spec=1.9
> +
> +.*:[ ]+file format .*
> +
> +
> +Disassembly of section .text:
> +
> +0+000 <.text>:
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> diff --git a/gas/testsuite/gas/riscv/priv-reg-version-1p9p1.d b/gas/testsuite/gas/riscv/priv-reg-version-1p9p1.d
> new file mode 100644
> index 0000000..18011ed
> --- /dev/null
> +++ b/gas/testsuite/gas/riscv/priv-reg-version-1p9p1.d
> @@ -0,0 +1,257 @@
> +#as: -march=rv32if -mpriv-spec=1.9.1
> +#source: priv-reg.s
> +#objdump: -dr -Mpriv-spec=1.9.1
> +
> +.*:[ ]+file format .*
> +
> +
> +Disassembly of section .text:
> +
> +0+000 <.text>:
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> diff --git a/gas/testsuite/gas/riscv/priv-reg.d b/gas/testsuite/gas/riscv/priv-reg.d
> deleted file mode 100644
> index a0c3cd7..0000000
> --- a/gas/testsuite/gas/riscv/priv-reg.d
> +++ /dev/null
> @@ -1,256 +0,0 @@
> -#as: -march=rv32if -mpriv-spec=1.11
> -#objdump: -dr
> -
> -.*:[ ]+file format .*
> -
> -
> -Disassembly of section .text:
> -
> -0+000 <.text>:
> -[ ]+[0-9a-f]+:[ ]+00002573[ ]+csrr[ ]+a0,ustatus
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> -[ ]+[0-9a-f]+:[ ]+c8002573[ ]+rdcycleh[ ]+a0
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> diff --git a/opcodes/riscv-dis.c b/opcodes/riscv-dis.c
> index 98302ff..c5a0d36 100644
> --- a/opcodes/riscv-dis.c
> +++ b/opcodes/riscv-dis.c
> @@ -31,6 +31,8 @@
> #include "bfd_stdint.h"
> #include <ctype.h>
>
> +static enum riscv_priv_spec_class default_priv_spec = PRIV_SPEC_CLASS_NONE;
> +
> struct riscv_private_data
> {
> bfd_vma gp;
> @@ -52,8 +54,8 @@ set_default_riscv_dis_options (void)
> no_aliases = 0;
> }
>
> -static void
> -parse_riscv_dis_option (const char *option)
> +static bfd_boolean
> +parse_riscv_dis_option_without_args (const char *option)
> {
> if (strcmp (option, "no-aliases") == 0)
> no_aliases = 1;
> @@ -63,6 +65,44 @@ parse_riscv_dis_option (const char *option)
> riscv_fpr_names = riscv_fpr_names_numeric;
> }
> else
> + return FALSE;
> + return TRUE;
> +}
> +
> +static void
> +parse_riscv_dis_option (const char *option)
> +{
> + char *equal, *value;
> +
> + if (parse_riscv_dis_option_without_args (option))
> + return;
> +
> + equal = strchr (option, '=');
> + if (equal == NULL)
> + {
> + /* The option without '=' should be defined above. */
> + opcodes_error_handler (_("unrecognized disassembler option: %s"), option);
> + return;
> + }
> + if (equal == option
> + || *(equal + 1) == '\0')
> + {
> + /* Invalid options with '=', no option name before '=',
> + and no value after '='. */
> + opcodes_error_handler (_("unrecognized disassembler option with '=': %s"),
> + option);
> + return;
> + }
> +
> + *equal = '\0';
> + value = equal + 1;
> + if (strcmp (option, "priv-spec") == 0)
> + {
> + if (!riscv_get_priv_spec_class (value, &default_priv_spec))
> + opcodes_error_handler (_("unknown privilege spec set by %s=%s"),
> + option, value);
> + }
> + else
> {
> /* xgettext:c-format */
> opcodes_error_handler (_("unrecognized disassembler option: %s"), option);
> @@ -322,17 +362,32 @@ print_insn_args (const char *d, insn_t l, bfd_vma pc, disassemble_info *info)
>
> case 'E':
> {
> - const char* csr_name = NULL;
> + static const char *riscv_csr_hash[4096]; /* Total 2^12 CSR */
> + static bfd_boolean init_csr = FALSE;
> unsigned int csr = EXTRACT_OPERAND (CSR, l);
> - switch (csr)
> +
> + if (!init_csr)
> {
> + unsigned int i;
> + for (i = 0; i < 4096; i++)
> + riscv_csr_hash[i] = NULL;
> +
> + /* Set to the newest privilege version. */
> + if (default_priv_spec == PRIV_SPEC_CLASS_NONE)
> + default_priv_spec = PRIV_SPEC_CLASS_DRAFT - 1;
> +
> #define DECLARE_CSR(name, num, class, define_version, abort_version) \
> - case num: csr_name = #name; break;
> + if (default_priv_spec >= define_version \
> + && default_priv_spec < abort_version) \
> + riscv_csr_hash[num] = #name;
> +#define DECLARE_CSR_ALIAS(name, num, class, define_version, abort_version) \
> + DECLARE_CSR(name, num, class, define_version, abort_version)
> #include "opcode/riscv-opc.h"
> #undef DECLARE_CSR
> }
> - if (csr_name)
> - print (info->stream, "%s", csr_name);
> +
> + if (riscv_csr_hash[csr] != NULL)
> + print (info->stream, "%s", riscv_csr_hash[csr]);
> else
> print (info->stream, "0x%x", csr);
> break;
> --
> 2.7.4
>
next prev parent reply other threads:[~2020-05-19 9:08 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-06 2:55 [PATCH v2 0/9] RISC-V: Support version controling for ISA standard extensions and CSR Nelson Chu
2020-05-06 2:55 ` [PATCH v2 1/9] RISC-V: Remove the redundant gas test file Nelson Chu
2020-05-19 9:07 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 2/9] RISC-V: Forgot to update the priv-reg-fail-read-only-01 test case Nelson Chu
2020-05-19 9:07 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 3/9] RISC-V: Support GAS option -misa-spec to set ISA versions Nelson Chu
2020-05-19 9:07 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 4/9] RISC-V: Support configure options to set ISA versions by default Nelson Chu
2020-05-19 9:07 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 5/9] RISC-V: Support version checking for CSR according to privilege spec version Nelson Chu
2020-05-19 9:08 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 6/9] RISC-V: Support configure option to choose the " Nelson Chu
2020-05-19 9:08 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 7/9] RISC-V: Make privilege spec attributes workable Nelson Chu
2020-05-19 9:08 ` Nelson Chu
2020-05-06 2:55 ` [PATCH v2 8/9] RISC-V: Disassembler dumps the CSR according to the chosen privilege spec Nelson Chu
2020-05-19 9:08 ` Nelson Chu [this message]
2020-05-06 2:55 ` [PATCH v2 9/9] RISC-V: Add documents and --help for the new GAS and OBJDUMP options Nelson Chu
2020-05-19 9:08 ` Nelson Chu
2020-05-19 9:07 ` [PATCH v2 0/9] RISC-V: Support version controling for ISA standard extensions and CSR Nelson Chu
2020-05-20 16:27 ` Nick Clifton
2020-05-21 2:38 ` Nelson Chu
2020-05-21 7:29 ` Nick Clifton
2020-05-21 9:11 ` Nelson Chu
2020-05-28 20:09 ` Jim Wilson
2020-05-29 1:02 ` Nelson Chu
2020-06-01 21:35 ` Jim Wilson
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