From: "H.J. Lu" <hjl.tools@gmail.com>
To: libc-alpha@sourceware.org
Subject: [PATCH] x32: Add <asm/unistd_x32.h> and regenerate arch-syscall.h
Date: Sat, 15 Aug 2020 14:31:38 -0700 [thread overview]
Message-ID: <20200815213138.1375595-1-hjl.tools@gmail.com> (raw)
X32 uses the same 64-bit syscall interface for set_thread_area. But
__NR_set_thread_area is missing from <asm/unistd_x32.h>. A kernel patch
was submitted:
From 7b05d5b43ae2545e0d4a3edb24205d18bc883626 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 15 Aug 2020 10:34:00 -0700
Subject: [PATCH] x86-64: Enable x32 set_thread_area
X32 uses the common 64-bit syscall interface for set_thread_area. Tested
with tools/testing/selftests/x86/sigreturn.c on x32.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
---
arch/x86/entry/syscalls/syscall_64.tbl | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index 37b844f839bc..670193a73f6e 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -213,7 +213,7 @@
202 common futex sys_futex
203 common sched_setaffinity sys_sched_setaffinity
204 common sched_getaffinity sys_sched_getaffinity
-205 64 set_thread_area
+205 common set_thread_area
206 64 io_setup sys_io_setup
207 common io_destroy sys_io_destroy
208 common io_getevents sys_io_getevents
--
2.26.2
Add <asm/unistd_x32.h> for older kernel header files and regenerate
x32 arch-syscall.h.
---
sysdeps/unix/sysv/linux/x86/include/asm/unistd_x32.h | 9 +++++++++
sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h | 1 +
2 files changed, 10 insertions(+)
create mode 100644 sysdeps/unix/sysv/linux/x86/include/asm/unistd_x32.h
diff --git a/sysdeps/unix/sysv/linux/x86/include/asm/unistd_x32.h b/sysdeps/unix/sysv/linux/x86/include/asm/unistd_x32.h
new file mode 100644
index 0000000000..4de22a7737
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/include/asm/unistd_x32.h
@@ -0,0 +1,9 @@
+/* FIXME: __NR_set_thread_area should come from the kernel header file.
+ This file should be removed if <asm/unistd_x32.h> from the kernel
+ header file contains __NR_set_thread_area. */
+
+#include_next <asm/unistd_x32.h>
+
+#ifndef __NR_set_thread_area
+# define __NR_set_thread_area 1073742029
+#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h b/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
index 1a701c1472..7b64b1fa0c 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/arch-syscall.h
@@ -260,6 +260,7 @@
#define __NR_sendto 1073741868
#define __NR_set_mempolicy 1073742062
#define __NR_set_robust_list 1073742354
+#define __NR_set_thread_area 1073742029
#define __NR_set_tid_address 1073742042
#define __NR_setdomainname 1073741995
#define __NR_setfsgid 1073741947
--
2.26.2
next reply other threads:[~2020-08-15 21:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-15 21:31 H.J. Lu [this message]
2020-08-24 11:17 ` Florian Weimer
2020-08-24 12:42 ` H.J. Lu
2020-08-24 13:22 ` Florian Weimer
2020-08-24 13:56 ` H.J. Lu
2020-08-24 17:17 ` Florian Weimer
2020-08-24 18:54 ` H.J. Lu
2020-08-24 19:10 ` Florian Weimer
2020-08-24 19:29 ` H.J. Lu
2020-08-25 10:50 ` Florian Weimer
2020-08-25 12:51 ` [PATCH] x32: Add <fixup-asm-unistd.h> " H.J. Lu
2020-08-26 9:35 ` Florian Weimer
2020-08-27 13:36 ` H.J. Lu
2020-08-31 12:56 ` Florian Weimer
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