From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: Huacai Chen <chenhc@lemote.com>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
qemu-devel@nongnu.org
Cc: "Aleksandar Rikalo" <aleksandar.rikalo@syrmia.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
"Laurent Vivier" <laurent@vivier.eu>,
"Meng Zhuo" <mengzhuo1203@gmail.com>,
"Aurelien Jarno" <aurelien@aurel32.net>
Subject: [PATCH v2 3/6] linux-user/elfload: Introduce MIPS GET_FEATURE_REG_SET() macro
Date: Tue, 1 Dec 2020 14:35:22 +0100 [thread overview]
Message-ID: <20201201133525.2866838-4-f4bug@amsat.org> (raw)
In-Reply-To: <20201201133525.2866838-1-f4bug@amsat.org>
ISA features are usually denoted in read-only bits from
CPU registers. Add the GET_FEATURE_REG_SET() macro which
checks if a CPU register has bits set.
Use the macro to check for MSA (which sets the MSAP bit of
the Config3 register when the ASE implementation is present).
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
linux-user/elfload.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 0e1d7e7677c..b7c6d30723a 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -992,17 +992,21 @@ enum {
#define GET_FEATURE_INSN(_flag, _hwcap) \
do { if (cpu->env.insn_flags & (_flag)) { hwcaps |= _hwcap; } } while (0)
+#define GET_FEATURE_REG_SET(_reg, _mask, _hwcap) \
+ do { if (cpu->env._reg & (_mask)) { hwcaps |= _hwcap; } } while (0)
+
static uint32_t get_elf_hwcap(void)
{
MIPSCPU *cpu = MIPS_CPU(thread_cpu);
uint32_t hwcaps = 0;
GET_FEATURE_INSN(ISA_MIPS32R6 | ISA_MIPS64R6, HWCAP_MIPS_R6);
- GET_FEATURE_INSN(ASE_MSA, HWCAP_MIPS_MSA);
+ GET_FEATURE_REG_SET(CP0_Config3, 1 << CP0C3_MSAP, HWCAP_MIPS_MSA);
return hwcaps;
}
+#undef GET_FEATURE_REG_SET
#undef GET_FEATURE_INSN
#endif /* TARGET_MIPS */
--
2.26.2
next prev parent reply other threads:[~2020-12-01 13:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 13:35 [PATCH v2 0/6] linux-user: Rework get_elf_hwcap() and support MIPS Loongson 2F/3E Philippe Mathieu-Daudé
2020-12-01 13:35 ` [PATCH v2 1/6] linux-user/elfload: Move GET_FEATURE macro out of get_elf_hwcap() body Philippe Mathieu-Daudé
2020-12-01 17:38 ` Richard Henderson
2020-12-01 13:35 ` [PATCH v2 2/6] linux-user/elfload: Rename MIPS GET_FEATURE() as GET_FEATURE_INSN() Philippe Mathieu-Daudé
2020-12-01 17:38 ` Richard Henderson
2020-12-01 13:35 ` Philippe Mathieu-Daudé [this message]
2020-12-01 17:39 ` [PATCH v2 3/6] linux-user/elfload: Introduce MIPS GET_FEATURE_REG_SET() macro Richard Henderson
2020-12-01 13:35 ` [PATCH v2 4/6] linux-user/elfload: Introduce MIPS GET_FEATURE_REG_EQU() macro Philippe Mathieu-Daudé
2020-12-01 17:36 ` Richard Henderson
2020-12-01 19:00 ` Philippe Mathieu-Daudé
2020-12-01 13:35 ` [PATCH v2 5/6] linux-user/elfload: Update HWCAP bits from linux 5.7 Philippe Mathieu-Daudé
2020-12-01 13:35 ` [PATCH v2 6/6] linux-user: Add support for MIPS Loongson 2F/3E Philippe Mathieu-Daudé
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201201133525.2866838-4-f4bug@amsat.org \
--to=f4bug@amsat.org \
--cc=aleksandar.rikalo@syrmia.com \
--cc=aurelien@aurel32.net \
--cc=chenhc@lemote.com \
--cc=jiaxun.yang@flygoat.com \
--cc=laurent@vivier.eu \
--cc=mengzhuo1203@gmail.com \
--cc=qemu-devel@nongnu.org \
--cc=richard.henderson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).