[Minios-devel] [UNIKRAFT PATCH v2 4/8] plat/linuxu: Add linuxu (ARM) interrupts support

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

From: Costin Lupu <costin.lupu@xxxxxxxxx>

Changes:
- ARM syscall numbers for SIGACTION and SIGPROCMASK
- ARM asm restorer

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
 plat/linuxu/include/linuxu/syscall-arm_32.h | 4 ++++
 plat/linuxu/irq.c                           | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/plat/linuxu/include/linuxu/syscall-arm_32.h 
b/plat/linuxu/include/linuxu/syscall-arm_32.h
index e28224d..5c1a919 100644
--- a/plat/linuxu/include/linuxu/syscall-arm_32.h
+++ b/plat/linuxu/include/linuxu/syscall-arm_32.h
@@ -46,6 +46,10 @@
 #define __SC_MUNMAP    91
 #define __SC_EXIT       1
 #define __SC_IOCTL     54
+
+#define __SC_RT_SIGACTION 43
+#define __SC_RT_SIGPROCMASK 126
+
 #define __SC_PSELECT6 335
 
 /* NOTE: from `man syscall`:
diff --git a/plat/linuxu/irq.c b/plat/linuxu/irq.c
index 7c55307..5ebda56 100644
--- a/plat/linuxu/irq.c
+++ b/plat/linuxu/irq.c
@@ -112,7 +112,14 @@ void ukplat_lcpu_irqs_handle_pending(void)
 }
 
 void __restorer();
+
+#if defined __X86_64__
 asm("__restorer:mov $15,%rax\nsyscall");
+#elif defined __ARM_32__
+asm("__restorer:mov r7, #0x77\nswi 0x0");
+#else
+#error "Unsupported architecture"
+#endif
 
 static void _irq_handle(int irq)
 {
-- 
2.7.4


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