From: Benjamin Berg Date: Thu, 19 Sep 2024 12:45:02 +0000 (+0200) Subject: um: Add generic stub_syscall1 function X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=cbb8e65e234e0139c0c516bb6b9110d210eecd3f;p=users%2Fjedix%2Flinux-maple.git um: Add generic stub_syscall1 function The 64bit version did not have a stub_syscall1 function yet. Add it as it will be useful to implement a static binary for stub loading. Signed-off-by: Benjamin Berg Link: https://patch.msgid.link/20240919124511.282088-2-benjamin@sipsolutions.net Signed-off-by: Johannes Berg --- diff --git a/arch/x86/um/shared/sysdep/stub_64.h b/arch/x86/um/shared/sysdep/stub_64.h index 67f44284f1aa..8e4ff39dcade 100644 --- a/arch/x86/um/shared/sysdep/stub_64.h +++ b/arch/x86/um/shared/sysdep/stub_64.h @@ -28,6 +28,17 @@ static __always_inline long stub_syscall0(long syscall) return ret; } +static __always_inline long stub_syscall1(long syscall, long arg1) +{ + long ret; + + __asm__ volatile (__syscall + : "=a" (ret) + : "0" (syscall), "D" (arg1) : __syscall_clobber ); + + return ret; +} + static __always_inline long stub_syscall2(long syscall, long arg1, long arg2) { long ret;