add mips64 port

patch by Mahesh Bodapati and Jaydeep Patil of Imagination
Technologies.

1 files changed, 281 insertions, 0 deletions

diff --git a/arch/mips64/syscall_arch.h b/arch/mips64/syscall_arch.h
new file mode 100644
index 00000000..1bd6c18f
--- /dev/null
+++ b/arch/mips64/syscall_arch.h
@@ -0,0 +1,281 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+__attribute__((visibility("hidden")))
+long (__syscall)(long, ...);
+
+#define SYSCALL_RLIM_INFINITY (-1UL/2)
+
+#include <sys/stat.h>
+struct kernel_stat {
+	unsigned int st_dev;
+	unsigned int __pad1[3];
+	unsigned long long st_ino;
+	unsigned int st_mode;
+	unsigned int st_nlink;
+	int st_uid;
+	int st_gid;
+	unsigned int st_rdev;
+	unsigned int __pad2[3];
+	long long st_size;
+	unsigned int st_atime_sec;
+	unsigned int st_atime_nsec;
+	unsigned int st_mtime_sec;
+	unsigned int st_mtime_nsec;
+	unsigned int st_ctime_sec;
+	unsigned int st_ctime_nsec;
+	unsigned int st_blksize;
+	unsigned int __pad3;
+	unsigned long long st_blocks;
+};
+
+static void __stat_fix(struct kernel_stat *kst, struct stat *st)
+{
+	st->st_dev = kst->st_dev;
+	st->st_ino = kst->st_ino;
+	st->st_mode = kst->st_mode;
+	st->st_nlink = kst->st_nlink;
+	st->st_uid = kst->st_uid;
+	st->st_gid = kst->st_gid;
+	st->st_rdev = kst->st_rdev;
+	st->st_size = kst->st_size;
+	st->st_atim.tv_sec = kst->st_atime_sec;
+	st->st_atim.tv_nsec = kst->st_atime_nsec;
+	st->st_mtim.tv_sec = kst->st_mtime_sec;
+	st->st_mtim.tv_nsec = kst->st_mtime_nsec;
+	st->st_ctim.tv_sec = kst->st_ctime_sec;
+	st->st_ctim.tv_nsec = kst->st_ctime_nsec;
+	st->st_blksize = kst->st_blksize;
+	st->st_blocks = kst->st_blocks;
+}
+
+#ifndef __clang__
+
+static inline long __syscall0(long n)
+{
+	register long r7 __asm__("$7");
+	register long r2 __asm__("$2");
+	__asm__ __volatile__ (
+		"daddu $2,$0,%2 ; syscall"
+		: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7)
+		: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+		  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+	return r7 ? -r2 : r2;
+}
+
+static inline long __syscall1(long n, long a)
+{
+	register long r4 __asm__("$4") = a;
+	register long r7 __asm__("$7");
+	register long r2 __asm__("$2");
+	__asm__ __volatile__ (
+		"daddu $2,$0,%2 ; syscall"
+		: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
+		  "r"(r4)
+		: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+		  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+	return r7 ? -r2 : r2;
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+	struct kernel_stat kst;
+	long ret;
+	register long r4 __asm__("$4");
+	register long r5 __asm__("$5");
+	register long r7 __asm__("$7");
+	register long r2 __asm__("$2");
+
+	r5 = b;
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		r5 = (long) &kst;
+
+	r4 = a;
+	__asm__ __volatile__ (
+		"daddu $2,$0,%2 ; syscall"
+		: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
+		  "r"(r4), "r"(r5)
+		: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+		  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	if (r7) return -r2;
+	ret = r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)b);
+
+	return ret;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+	struct kernel_stat kst;
+	long ret;
+	register long r4 __asm__("$4");
+	register long r5 __asm__("$5");
+	register long r6 __asm__("$6");
+	register long r7 __asm__("$7");
+	register long r2 __asm__("$2");
+
+	r5 = b;
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		r5 = (long) &kst;
+
+	r4 = a;
+	r6 = c;
+	__asm__ __volatile__ (
+		"daddu $2,$0,%2 ; syscall"
+		: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
+		  "r"(r4), "r"(r5), "r"(r6)
+		: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+		  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	if (r7) return -r2;
+	ret = r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)b);
+
+	return ret;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+	struct kernel_stat kst;
+	long ret;
+	register long r4 __asm__("$4");
+	register long r5 __asm__("$5");
+	register long r6 __asm__("$6");
+	register long r7 __asm__("$7");
+	register long r2 __asm__("$2");
+
+	r5 = b;
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		r5 = (long) &kst;
+
+	r4 = a;
+	r6 = c;
+	r7 = d;
+	__asm__ __volatile__ (
+		"daddu $2,$0,%2 ; syscall"
+		: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
+		  "r"(r4), "r"(r5), "r"(r6)
+		: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+		  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	if (r7) return -r2;
+	ret = r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)b);
+
+	return ret;
+}
+
+#else
+
+static inline long __syscall0(long n)
+{
+	return (__syscall)(n);
+}
+
+static inline long __syscall1(long n, long a)
+{
+	return (__syscall)(n, a);
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+	long r2;
+	long old_b = b;
+	struct kernel_stat kst;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		b = (long) &kst;
+
+	r2 = (__syscall)(n, a, b);
+	if (r2 > -4096UL) return r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)old_b);
+
+	return r2;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+	long r2;
+	long old_b = b;
+	struct kernel_stat kst;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		b = (long) &kst;
+
+	r2 = (__syscall)(n, a, b, c);
+	if (r2 > -4096UL) return r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)old_b);
+
+	return r2;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+	long r2;
+	long old_b = b;
+	struct kernel_stat kst;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		b = (long) &kst;
+
+	r2 = (__syscall)(n, a, b, c, d);
+	if (r2 > -4096UL) return r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)old_b);
+
+	return r2;
+}
+
+#endif
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+	long r2;
+	long old_b = b;
+	struct kernel_stat kst;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		b = (long) &kst;
+
+	r2 = (__syscall)(n, a, b, c, d, e);
+	if (r2 > -4096UL) return r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)old_b);
+
+	return r2;
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+	long r2;
+	long old_b = b;
+	struct kernel_stat kst;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		b = (long) &kst;
+
+	r2 = (__syscall)(n, a, b, c, d, e, f);
+	if (r2 > -4096UL) return r2;
+
+	if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
+		__stat_fix(&kst, (struct stat *)old_b);
+
+	return r2;
+}
+
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_2.6"