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path: root/toolchain/uClibc/patches-0.9.29/160-mips_syscall.patch
blob: c5e5f6b468628fef4d9e8be7fe24ce3488a27bcb (plain)
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--- uClibc-0.9.29.orig/libc/sysdeps/linux/mips/syscall.S	2009-02-27 19:26:57.420288905 +0100
+++ uClibc-0.9.29/libc/sysdeps/linux/mips/syscall.S	2009-02-27 19:43:18.000000000 +0100
@@ -29,6 +29,9 @@
 .type   syscall,@function
 .ent    syscall
 syscall:
+#ifdef __PIC__
+	SETUP_GP
+#endif
 	move	v0, a0		/* Load system call number from first arg.  */
 	move	a0, a1		/* Move the next three args up a register.  */
 	move	a1, a2
@@ -60,6 +63,18 @@
 #else
 	addiu	sp,sp,32
 #endif
+	bnez	a3, 1f
      	j ra			/* Return to caller.  */
+1:
+	move	a0,v0		/* Pass return val to C function. */
+
+#ifdef __PIC__
+	SETUP_GP64(v0, syscall)
+	PTR_LA	t9, __syscall_error
+	RESTORE_GP64
+	jr	t9
+#else
+	j	__syscall_error
+#endif
 .end    syscall
 .size   syscall,.-syscall