Rewrite vfork() as C, should now work. Changed longjmp.S and setjmp.S

to use GCC's internal ppc-asm.h, and added macro to disable FP save/
restore in longjmp and setjmp.  Fixed name of _setjmp() (was __setjmp).
Fixed _setjmp to be PIC.

1 files changed, 38 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/powerpc/vfork.c b/libc/sysdeps/linux/powerpc/vfork.c
new file mode 100644
index 000000000..fcf020804
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/vfork.c
@@ -0,0 +1,38 @@
+
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <errno.h>
+
+
+int vfork(void)
+{
+	unsigned long __sc_ret, __sc_err;
+	register unsigned long __sc_0 __asm__ ("r0");
+	register unsigned long __sc_3 __asm__ ("r3");
+
+	__sc_0 = __NR_vfork;
+	__asm__ __volatile__
+		("sc		\n\t"
+		 "mfcr %1	"
+		: "=&r" (__sc_3), "=&r" (__sc_0)
+		: "0"   (__sc_3), "1"   (__sc_0)
+		: __syscall_clobbers);
+	__sc_ret = __sc_3;
+	__sc_err = __sc_0;
+
+	if((__sc_err & 0x10000000) && (__sc_ret == ENOSYS)){ 
+		__sc_0 = __NR_fork;
+		__asm__ __volatile__
+			("sc		\n\t"
+			 "mfcr %1	"
+			: "=&r" (__sc_3), "=&r" (__sc_0)
+			: "0"   (__sc_3), "1"   (__sc_0)
+			: __syscall_clobbers);
+		__sc_ret = __sc_3;
+		__sc_err = __sc_0;
+	}
+
+	__syscall_return (pid_t);
+}
+