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e33a23fbe8
This patch adds two new macros for internal and inline syscall to use
within GLIBC: INTERNAL_SYSCALL_CALL and INLINE_SYSCALL_CALL. They are
similar to the old INTERNAL_SYSCALL and INLINE_SYSCALL with the difference
the new macros accept a variable argument call and do not require to pass
the expected argument size.
The advantage is it is possible to use variable argument macros like
SYSCALL_LL{64} without the need to also handle the argument size. So
for an ABI where SYSCALL_LL might split the argument in high and low
parts, instead of:
INTERNAL_SYSCALL_DECL (err);
#if ...
INTERNAL_SYSCALL (syscall, err, 2, SYSCALL_LL (len));
#else
INTERNAL_SYSCALL (syscall, err, 1, SYSCALL_LL (len));
#endif
It will be just:
INTERNAL_SYSCALL_CALL (syscall, err, SYSCALL_LL (len));
The INLINE_SYSCALL_CALL follows the same semanthic regarding the argument
and is similar to INLINE_SYSCALL regarding setting errno.
Checked with a build for x86_64, i386, aach64, armhf, powerpc64le, powerpc32,
and mips32. No code generation changed.
* sysdeps/unix/sysdep.h (__INTERNAL_SYSCALL0): New macro.
(__INTERNAL_SYSCALL1): Likewise.
(__INTERNAL_SYSCALL2): Likewise.
(__INTERNAL_SYSCALL3): Likewise.
(__INTERNAL_SYSCALL4): Likewise.
(__INTERNAL_SYSCALL5): Likewise.
(__INTERNAL_SYSCALL6): Likewise.
(__INTERNAL_SYSCALL7): Likewise.
(__INTERNAL_SYSCALL_NARGS_X): Likewise.
(__INTERNAL_SYSCALL_NARGS): Likewise.
(__INTERNAL_SYSCALL_DISP): Likewise.
(INTERNAL_SYSCALL_CALL): Likewise.
(__SYSCALL0): Rename to __INLINE_SYSCALL0.
(__SYSCALL1): Rename to __INLINE_SYSCALL1.
(__SYSCALL2): Rename to __INLINE_SYSCALL2.
(__SYSCALL3): Rename to __INLINE_SYSCALL3.
(__SYSCALL4): Rename to __INLINE_SYSCALL4.
(__SYSCALL5): Rename to __INLINE_SYSCALL5.
(__SYSCALL6): Rename to __INLINE_SYSCALL6.
(__SYSCALL7): Rename to __INLINE_SYSCALL7.
(__SYSCALL_NARGS_X): Rename to __INLINE_SYSCALL_NARGS_X.
(__SYSCALL_NARGS): Rename to __INLINE_SYSCALL_NARGS.
(__SYSCALL_DISP): Rename to __INLINE_SYSCALL_DISP.
(__SYSCALL_CALL): Rename to INLINE_SYSCALL_CALL.
(SYSCALL_CANCEL): Replace __SYSCALL_CALL with INLINE_SYSCALL_CALL.
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| .. | ||
| aarch64 | ||
| alpha | ||
| arm | ||
| generic | ||
| gnu | ||
| hppa | ||
| i386 | ||
| ia64 | ||
| ieee754 | ||
| init_array | ||
| m68k | ||
| mach | ||
| microblaze | ||
| mips | ||
| nacl | ||
| nios2 | ||
| nptl | ||
| posix | ||
| powerpc | ||
| pthread | ||
| s390 | ||
| sh | ||
| sparc | ||
| tile | ||
| unix | ||
| wordsize-32 | ||
| wordsize-64 | ||
| x86 | ||
| x86_64 | ||