Module: xenomai-3
Branch: stable-3.0.x
Commit: 1605481a413be99176464a0b18e2d5bb665eddd6
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=1605481a413be99176464a0b18e2d5bb665eddd6
Author: Philippe Gerum <r...@xenomai.org>
Date: Fri Nov 17 16:36:32 2017 +0100
cobalt/powerpc: add syscall decoding helper
---
kernel/cobalt/arch/powerpc/include/asm/xenomai/syscall.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/kernel/cobalt/arch/powerpc/include/asm/xenomai/syscall.h
b/kernel/cobalt/arch/powerpc/include/asm/xenomai/syscall.h
index a0e6103..6a9e836 100644
--- a/kernel/cobalt/arch/powerpc/include/asm/xenomai/syscall.h
+++ b/kernel/cobalt/arch/powerpc/include/asm/xenomai/syscall.h
@@ -39,6 +39,16 @@
#define __xn_reg_pc(__regs) ((__regs)->nip)
#define __xn_reg_sp(__regs) ((__regs)->gpr[1])
+/*
+ * Returns the syscall number depending on the handling core. Cobalt
+ * and Linux syscall numbers can be fetched from GPR0, masking out the
+ * __COBALT_SYSCALL_BIT marker.
+ */
+static inline long __xn_get_syscall_nr(struct pt_regs *regs)
+{
+ return __xn_syscall(regs);
+}
+
static inline void __xn_error_return(struct pt_regs *regs, int v)
{
/*
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