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authorZhangjin Wu <falcon@tinylab.org>2023-06-03 16:09:41 +0800
committerPaul E. McKenney <paulmck@kernel.org>2023-06-09 11:46:09 -0700
commit646ff7c7edaade6b1ea81fa2e132c52a346bba39 (patch)
tree86f5c4a2a0353c9dc44b8cd21494814b1c3559ba /tools/include
parenta36cfc5e483e7bf609b3d39d83150626d92355e0 (diff)
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: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/linux-riscv/bf3e07c1-75f5-425b-9124-f3f2b230e63a@app.fastmail.com/ Signed-off-by: Zhangjin Wu <falcon@tinylab.org> Reviewed-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/include')
-rw-r--r--tools/include/nolibc/arch-arm.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/include/nolibc/arch-arm.h b/tools/include/nolibc/arch-arm.h
index 45b89ffe8247..ca4c66987497 100644
--- a/tools/include/nolibc/arch-arm.h
+++ b/tools/include/nolibc/arch-arm.h
@@ -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));