https://github.com/axboe/liburing/commit/cb350a8989adbd65db574325d9a86d5437d800da
https://bugs.gentoo.org/816798

From cb350a8989adbd65db574325d9a86d5437d800da Mon Sep 17 00:00:00 2001
From: Guillem Jover <guillem@hadrons.org>
Date: Mon, 13 Sep 2021 23:56:08 +0200
Subject: [PATCH] test: Use syscall wrappers instead of using syscall(2)
 directly

Some of these syscalls have different entry points depending on the
architecture. Use the wrappers to avoid having to reimplement them
portably.

Fixes build failures on Debian armel and armhf builds.

Signed-off-by: Guillem Jover <guillem@hadrons.org>
--- a/test/sqpoll-cancel-hang.c
+++ b/test/sqpoll-cancel-hang.c
@@ -4,7 +4,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
-#include <sys/syscall.h>
 #include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>
@@ -29,8 +28,6 @@ static uint64_t current_time_ms(void)
 
 #define IORING_OFF_SQES 0x10000000ULL
 
-#define sys_io_uring_setup 425
-
 static void kill_and_wait(int pid, int* status)
 {
     kill(-pid, SIGKILL);
@@ -53,7 +50,7 @@ a5)
     void* vma2 = (void*)a3;
     void** ring_ptr_out = (void**)a4;
     void** sqes_ptr_out = (void**)a5;
-    uint32_t fd_io_uring = syscall(sys_io_uring_setup, entries, setup_params);
+    uint32_t fd_io_uring = __sys_io_uring_setup(entries, setup_params);
     uint32_t sq_ring_sz = setup_params->sq_off.array +
 setup_params->sq_entries * sizeof(uint32_t);
     uint32_t cq_ring_sz = setup_params->cq_off.cqes +
@@ -135,7 +132,7 @@ void trigger_bug(void)
 }
 int main(void)
 {
-    syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
+    mmap((void *)0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
     int pid = fork();
     if (pid < 0)
         exit(1);