Added powerpc-specific mmap syscall, 'cause we're special.

1 files changed, 41 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/powerpc/_mmap.c b/libc/sysdeps/linux/powerpc/_mmap.c
new file mode 100644
index 000000000..aec5524ef
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/_mmap.c
@@ -0,0 +1,41 @@
+
+#include <unistd.h>
+#include <sys/mman.h>
+
+
+void * mmap(void *start, size_t length, int prot, int flags, int fd,
+	off_t offset)
+{
+	unsigned long __sc_ret, __sc_err;
+	register unsigned long __sc_0 __asm__ ("r0");
+	register unsigned long __sc_3 __asm__ ("r3");
+	register unsigned long __sc_4 __asm__ ("r4");
+	register unsigned long __sc_5 __asm__ ("r5");
+	register unsigned long __sc_6 __asm__ ("r6");
+	register unsigned long __sc_7 __asm__ ("r7");
+	register unsigned long __sc_8 __asm__ ("r8");
+
+	__sc_3 = (unsigned long) start;
+	__sc_4 = (unsigned long) length;
+	__sc_5 = (unsigned long) prot;
+	__sc_6 = (unsigned long) flags;
+	__sc_7 = (unsigned long) fd;
+	__sc_8 = (unsigned long) offset;
+	__sc_0 = __NR_mmap;
+	__asm__ __volatile__
+		("sc		\n\t"
+		 "mfcr %1	"
+		: "=&r" (__sc_3), "=&r" (__sc_0)
+		: "0"   (__sc_3), "1"   (__sc_0),
+		  "r"   (__sc_4),
+		  "r"   (__sc_5),
+		  "r"   (__sc_6),
+		  "r"   (__sc_7),
+		  "r"   (__sc_8)
+		: __syscall_clobbers);
+	__sc_ret = __sc_3;
+	__sc_err = __sc_0;
+
+	__syscall_return (void *);
+}
+