From: Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org>
To: libc-alpha@sourceware.org, Stafford Horne <shorne@gmail.com>
Subject: [PATCH 0/6] linux: Some syscall refactors
Date: Mon, 22 Nov 2021 15:54:31 -0300 [thread overview]
Message-ID: <20211122185437.1934590-1-adhemerval.zanella@linaro.org> (raw)
The autogeneration syscall list has some limitations:
* 64-bit arguments might require to override with the specific
kernel ABI (for instance if the ABI required even-off register
number).
* LFS might also incur arch-specific override.
* Variadic call is also another source of potential issues,
since some architectures might use a different call mechanism
(for instance passing argument on the stack instead of registers)
and the argument might impose some non obvious issues (for
instance if 64-bit argument are used).
Besides this issue, this patchset also refactors pipe (to remove the
usage of arch-specific kernel ABIS), and provide C generic
implementations for syscall and ioctl.
Adhemerval Zanella (6):
linux: Add fanotify_mark C implementation
linux: Add prlimit64 C implementation
linux: Implement mremap in C
linux: Implement pipe in terms of __NR_pipe2
linux: Add generic syscall implementation
linux: Add generic ioctl implementation
sysdeps/unix/sysdep.h | 20 ++++++
sysdeps/unix/sysv/linux/Makefile | 6 +-
sysdeps/unix/sysv/linux/alpha/pipe.S | 1 -
sysdeps/unix/sysv/linux/arm/syscalls.list | 4 --
.../{sparc/sparc32/pipe.S => fanotify_mark.c} | 38 +++++------
.../linux/generic/wordsize-32/syscalls.list | 5 --
sysdeps/unix/sysv/linux/hppa/fanotify_mark.c | 2 +
sysdeps/unix/sysv/linux/hppa/prlimit64.c | 2 +
sysdeps/unix/sysv/linux/hppa/syscall.c | 65 ------------------
sysdeps/unix/sysv/linux/hppa/syscalls.list | 2 -
sysdeps/unix/sysv/linux/i386/syscalls.list | 4 --
sysdeps/unix/sysv/linux/ia64/pipe.S | 36 ----------
.../pipe.S => sysv/linux/internal-ioctl.h} | 23 +++----
sysdeps/unix/sysv/linux/ioctl.c | 49 +++++++++++++
sysdeps/unix/sysv/linux/m68k/syscalls.list | 2 -
.../unix/sysv/linux/microblaze/syscalls.list | 2 -
.../unix/sysv/linux/mips/mips32/syscalls.list | 5 --
.../sysv/linux/mips/mips64/n32/syscalls.list | 4 --
.../sysv/linux/mips/mips64/n64/syscalls.list | 4 --
sysdeps/unix/sysv/linux/mips/pipe.S | 1 -
.../linux/{sparc/sparc64/pipe.S => mremap.c} | 40 +++++------
sysdeps/unix/sysv/linux/{generic => }/pipe.c | 5 +-
.../linux/powerpc/internal-ioctl.h} | 39 +++++++----
sysdeps/unix/sysv/linux/powerpc/ioctl.c | 68 -------------------
.../linux/powerpc/powerpc32/syscalls.list | 3 -
sysdeps/unix/sysv/linux/prlimit.c | 2 +
.../sysv/linux/{sh/pipe.S => prlimit64.c} | 45 ++++++------
sysdeps/unix/sysv/linux/riscv/syscall.c | 4 +-
.../sysv/linux/s390/s390-32/syscalls.list | 2 -
sysdeps/unix/sysv/linux/sh/fanotify_mark.c | 2 +
sysdeps/unix/sysv/linux/sh/syscalls.list | 4 --
.../sysv/linux/sparc/sparc32/syscalls.list | 3 -
sysdeps/unix/sysv/linux/syscall.c | 43 ++++++++++++
sysdeps/unix/sysv/linux/syscalls.list | 2 -
.../unix/sysv/linux/wordsize-64/syscalls.list | 3 -
35 files changed, 225 insertions(+), 315 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/alpha/pipe.S
rename sysdeps/unix/sysv/linux/{sparc/sparc32/pipe.S => fanotify_mark.c} (56%)
delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/syscalls.list
create mode 100644 sysdeps/unix/sysv/linux/hppa/fanotify_mark.c
create mode 100644 sysdeps/unix/sysv/linux/hppa/prlimit64.c
delete mode 100644 sysdeps/unix/sysv/linux/hppa/syscall.c
delete mode 100644 sysdeps/unix/sysv/linux/ia64/pipe.S
rename sysdeps/unix/{alpha/pipe.S => sysv/linux/internal-ioctl.h} (69%)
create mode 100644 sysdeps/unix/sysv/linux/ioctl.c
delete mode 100644 sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
delete mode 100644 sysdeps/unix/sysv/linux/mips/pipe.S
rename sysdeps/unix/sysv/linux/{sparc/sparc64/pipe.S => mremap.c} (56%)
rename sysdeps/unix/sysv/linux/{generic => }/pipe.c (87%)
rename sysdeps/unix/{mips/pipe.S => sysv/linux/powerpc/internal-ioctl.h} (53%)
delete mode 100644 sysdeps/unix/sysv/linux/powerpc/ioctl.c
rename sysdeps/unix/sysv/linux/{sh/pipe.S => prlimit64.c} (53%)
create mode 100644 sysdeps/unix/sysv/linux/sh/fanotify_mark.c
create mode 100644 sysdeps/unix/sysv/linux/syscall.c
--
2.32.0
next reply other threads:[~2021-11-22 18:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-22 18:54 Adhemerval Zanella via Libc-alpha [this message]
2021-11-22 18:54 ` [PATCH 1/6] linux: Add fanotify_mark C implementation Adhemerval Zanella via Libc-alpha
2021-11-24 21:45 ` Stafford Horne via Libc-alpha
2021-11-25 12:55 ` Adhemerval Zanella via Libc-alpha
2021-11-22 18:54 ` [PATCH 2/6] linux: Add prlimit64 " Adhemerval Zanella via Libc-alpha
2021-11-25 23:39 ` Stafford Horne via Libc-alpha
2021-11-30 11:51 ` Adhemerval Zanella via Libc-alpha
2021-11-22 18:54 ` [PATCH 3/6] linux: Implement mremap in C Adhemerval Zanella via Libc-alpha
2021-11-26 0:26 ` Stafford Horne via Libc-alpha
2021-11-30 11:55 ` Adhemerval Zanella via Libc-alpha
2021-11-22 18:54 ` [PATCH 4/6] linux: Implement pipe in terms of __NR_pipe2 Adhemerval Zanella via Libc-alpha
2021-11-26 23:03 ` Stafford Horne via Libc-alpha
2021-11-30 14:53 ` Adhemerval Zanella via Libc-alpha
2021-11-22 18:54 ` [PATCH 5/6] linux: Add generic syscall implementation Adhemerval Zanella via Libc-alpha
2021-11-22 18:54 ` [PATCH 6/6] linux: Add generic ioctl implementation Adhemerval Zanella via Libc-alpha
2021-12-04 7:50 ` Stafford Horne via Libc-alpha
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