All of lore.kernel.org
 help / color / mirror / Atom feed
From: Willy Tarreau <w@1wt.eu>
To: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Pranith Kumar <bobby.prani@gmail.com>,
	Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>,
	Ammar Faizi <ammarfaizi2@gnuweeb.org>,
	David Laight <David.Laight@ACULAB.COM>,
	Mark Brown <broonie@kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Shuah Khan <shuah@kernel.org>,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
	Willy Tarreau <w@1wt.eu>
Subject: [PATCH 01/17] tools/nolibc: make argc 32-bit in riscv startup code
Date: Tue, 19 Jul 2022 23:44:32 +0200	[thread overview]
Message-ID: <20220719214449.2520-2-w@1wt.eu> (raw)
In-Reply-To: <20220719214449.2520-1-w@1wt.eu>

The "ld a0, 0(sp)" instruction doesn't build on RISCV32 because that
would load a 64-bit value into a 32-bit register. But argc 32-bit,
not 64, so we ought to use "lw" here. Tested on both RISCV32 and
RISCV64.

Cc: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
 tools/include/nolibc/arch-riscv.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/include/nolibc/arch-riscv.h b/tools/include/nolibc/arch-riscv.h
index 95e2b7924925..ba04771cb3a3 100644
--- a/tools/include/nolibc/arch-riscv.h
+++ b/tools/include/nolibc/arch-riscv.h
@@ -190,7 +190,7 @@ __asm__ (".section .text\n"
     ".option norelax\n"
     "lla   gp, __global_pointer$\n"
     ".option pop\n"
-    "ld    a0, 0(sp)\n"          // argc (a0) was in the stack
+    "lw    a0, 0(sp)\n"          // argc (a0) was in the stack
     "add   a1, sp, "SZREG"\n"    // argv (a1) = sp
     "slli  a2, a0, "PTRLOG"\n"   // envp (a2) = SZREG*argc ...
     "add   a2, a2, "SZREG"\n"    //             + SZREG (skip null)
-- 
2.17.5


  reply	other threads:[~2022-07-19 21:45 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-19 21:44 [PATCH 00/17] nolibc: add preliminary self tests Willy Tarreau
2022-07-19 21:44 ` Willy Tarreau [this message]
2022-07-19 21:44 ` [PATCH 02/17] tools/nolibc: fix build warning in sys_mmap() when my_syscall6 is not defined Willy Tarreau
2022-07-19 21:44 ` [PATCH 03/17] tools/nolibc: make sys_mmap() automatically use the right __NR_mmap definition Willy Tarreau
2022-07-19 21:44 ` [PATCH 04/17] selftests/nolibc: add basic infrastructure to ease creation of nolibc tests Willy Tarreau
2022-07-19 21:44 ` [PATCH 05/17] selftests/nolibc: support a test definition format Willy Tarreau
2022-07-19 21:44 ` [PATCH 06/17] selftests/nolibc: implement a few tests for various syscalls Willy Tarreau
2022-07-19 21:44 ` [PATCH 07/17] selftests/nolibc: add a few tests for some libc functions Willy Tarreau
2022-07-19 21:44 ` [PATCH 07/17] selftests/nolibc: add a few tests for some stdlib functions Willy Tarreau
2022-07-19 21:44 ` [PATCH 08/17] selftests/nolibc: exit with poweroff on success when getpid() == 1 Willy Tarreau
2022-07-19 21:44 ` [PATCH 09/17] selftests/nolibc: on x86, support exiting with isa-debug-exit Willy Tarreau
2022-07-19 21:44 ` [PATCH 10/17] selftests/nolibc: recreate and populate /dev and /proc if missing Willy Tarreau
2022-07-19 21:44 ` [PATCH 11/17] selftests/nolibc: condition some tests on /proc existence Willy Tarreau
2022-07-19 21:44 ` [PATCH 12/17] selftests/nolibc: support glibc as well Willy Tarreau
2022-07-19 21:44 ` [PATCH 13/17] selftests/nolibc: add a "kernel" target to build the kernel with the initramfs Willy Tarreau
2022-07-19 21:44 ` [PATCH 14/17] selftests/nolibc: add a "defconfig" target Willy Tarreau
2022-07-19 21:44 ` [PATCH 15/17] selftests/nolibc: add a "run" target to start the kernel in QEMU Willy Tarreau
2022-07-19 21:44 ` [PATCH 16/17] selftests/nolibc: "sysroot" target installs a local copy of the sysroot Willy Tarreau
2022-07-19 21:44 ` [PATCH 17/17] selftests/nolibc: add a "help" target Willy Tarreau
2022-07-19 22:49 ` [PATCH 00/17] nolibc: add preliminary self tests Paul E. McKenney
2022-07-20  3:26   ` Willy Tarreau
2022-07-20 16:03 ` Ammar Faizi
2022-07-20 16:20   ` Willy Tarreau
2022-07-20 17:05     ` Ammar Faizi
2022-07-20 17:14       ` Willy Tarreau

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=20220719214449.2520-2-w@1wt.eu \
    --to=w@1wt.eu \
    --cc=David.Laight@ACULAB.COM \
    --cc=alviro.iskandar@gnuweeb.org \
    --cc=ammarfaizi2@gnuweeb.org \
    --cc=bobby.prani@gmail.com \
    --cc=broonie@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-kselftest@vger.kernel.org \
    --cc=paulmck@kernel.org \
    --cc=shuah@kernel.org \
    --cc=torvalds@linux-foundation.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.