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author | 2020-01-02 10:18:22 +0100 | |
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committer | 2020-01-02 10:18:23 +0100 | |
commit | a1bd5f86739926469bbe0054b93305ff5905b070 (patch) | |
tree | 48f6c1da68ce82fb7207fedc529dc98bf2092e04 /NEWS | |
parent | Linux: Add tables with system call numbers (diff) | |
download | glibc-a1bd5f86739926469bbe0054b93305ff5905b070.tar.gz glibc-a1bd5f86739926469bbe0054b93305ff5905b070.tar.bz2 glibc-a1bd5f86739926469bbe0054b93305ff5905b070.zip |
Linux: Use system call tables during build
Use <arch-syscall.h> instead of <asm/unistd.h> to obtain the system
call numbers. A few direct includes of <asm/unistd.h> need to be
removed (if the system call numbers are already provided indirectly
by <sysdep.h>) or replaced with <sys/syscall.h>.
Current Linux headers for alpha define the required system call names,
so most of the _NR_* hacks are no longer needed. For the 32-bit arm
architecture, eliminate the INTERNAL_SYSCALL_ARM macro, now that we
have regular system call names for cacheflush and set_tls. There are
more such cleanup opportunities for other architectures, but these
cleanups are required to avoid macro redefinition errors during the
build.
For ia64, it is desirable to use <asm/break.h> directly to obtain
the break number for system calls (which is not a system call number
itself). This requires replacing __BREAK_SYSCALL with
__IA64_BREAK_SYSCALL because the former is defined as an alias in
<asm/unistd.h>, but not in <asm/break.h>.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'NEWS')
-rw-r--r-- | NEWS | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -101,7 +101,8 @@ Deprecated and removed features, and other changes affecting compatibility: Changes to build and runtime requirements: - [Add changes to build and runtime requirements here] +* It is no longer necessary to have recent Linux kernel headers to build + working (non-stub) system call wrappers. Security related changes: |