Commit 646ff7c7 authored by @wuzhangjin's avatar @wuzhangjin Committed by Paul E. McKenney
Browse files

tools/nolibc: arm: add missing my_syscall6 



This is required by the coming removal of the oldselect and newselect
support.

pselect6/pselect6_time64 will be used unconditionally, they have 6
arguments.

Suggested-by: default avatarArnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-riscv/bf3e07c1-75f5-425b-9124-f3f2b230e63a@app.fastmail.com/


Signed-off-by: default avatarZhangjin Wu <falcon@tinylab.org>
Reviewed-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent a36cfc5e

tools/include/nolibc/arch-arm.h

+23 −0
Original line number Diff line number Diff line
@@ -198,6 +198,29 @@ struct sys_stat_struct { 
	_arg1;                                                                \

})



#define my_syscall6(num, arg1, arg2, arg3, arg4, arg5, arg6)                  \

({                                                                            \

	register long _num  __asm__(_NOLIBC_SYSCALL_REG) = (num);             \

	register long _arg1 __asm__ ("r0") = (long)(arg1);                    \

	register long _arg2 __asm__ ("r1") = (long)(arg2);                    \

	register long _arg3 __asm__ ("r2") = (long)(arg3);                    \

	register long _arg4 __asm__ ("r3") = (long)(arg4);                    \

	register long _arg5 __asm__ ("r4") = (long)(arg5);                    \

	register long _arg6 __asm__ ("r5") = (long)(arg6);                    \

	                                                                      \

	__asm__  volatile (                                                   \

		_NOLIBC_THUMB_SET_R7                                          \

		"svc #0\n"                                                    \

		_NOLIBC_THUMB_RESTORE_R7                                      \

		: "=r"(_arg1), "=r" (_num)                                    \

		: "r"(_arg1), "r"(_arg2), "r"(_arg3), "r"(_arg4), "r"(_arg5), \

		  "r"(_arg6), "r"(_num)                                       \

		: "memory", "cc", "lr"                                        \

	);                                                                    \

	_arg1;                                                                \

})





char **environ __attribute__((weak));

const unsigned long *_auxv __attribute__((weak));