MIPS support for libc.
Change-Id: I2864dea04b3faf2d919165dcaa600af5b16c41c8
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Raghu Gandham <raghu@mips.com>
diff --git a/libc/arch-mips/bionic/futex_mips.S b/libc/arch-mips/bionic/futex_mips.S
new file mode 100644
index 0000000..2a953ca
--- /dev/null
+++ b/libc/arch-mips/bionic/futex_mips.S
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <asm/unistd.h>
+
+#define FUTEX_WAIT 0
+#define FUTEX_WAKE 1
+
+/*
+ * __futex_wait(*ftx, val, *timespec)
+ * futex_syscall(*ftx, op, val, *timespec, *addr2, val3)
+ */
+ .type __futex_wait, @function
+ .global __futex_wait
+ .align 4
+ .ent __futex_wait
+__futex_wait:
+ subu $sp,4*6
+ sw $0,20($sp) /* val3 */
+ sw $0,16($sp) /* addr2 */
+ move $a3,$a2 /* timespec */
+ move $a2,$a1 /* val */
+ li $a1,FUTEX_WAIT /* op */
+# move $a0,$a0 /* ftx */
+ li $v0,__NR_futex
+ syscall
+ .set noreorder
+ bnez $a3, 1f /* Check for error */
+ neg $v0 /* Negate error number if it's valid */
+ move $v0,$0 /* Otherwise return 0 */
+1:
+ .set reorder
+ addu $sp,4*6
+ j $ra
+ .end __futex_wait
+
+/*
+ * int __futex_wake(volatile void *ftx, int count)
+ * int futex_syscall(*ftx, op, val, *timespec, *addr2, val3)
+ */
+ .type __futex_wake, @function
+ .globl __futex_wake
+ .align 4
+ .ent __futex_wake
+__futex_wake:
+ subu $sp,4*6
+ sw $0,20($sp) /* val3 */
+ sw $0,16($sp) /* addr2 */
+ move $a3,$0 /* timespec */
+ move $a2,$a1 /* val */
+ li $a1,FUTEX_WAKE /* op */
+# move $a0,$a0 /* ftx */
+ li $v0,__NR_futex
+ syscall
+ .set noreorder
+ bnez $a3, 1f /* Check for error */
+ neg $v0 /* Negate error number if it's valid */
+ move $v0,$0 /* Otherwise return 0 */
+1:
+ .set reorder
+ addu $sp,4*6
+ j $ra
+ .end __futex_wake
+
+/* __futex_syscall3(*ftx, op, val)
+ * futex_syscall(*ftx, op, val, *timespec, *addr2, val3)
+ */
+ .type __futex_syscall3, @function
+ .global __futex_syscall3
+ .align 4
+ .ent __futex_syscall3
+__futex_syscall3:
+ subu $sp,4*6
+ sw $0,20($sp) /* val3 */
+ sw $0,16($sp) /* addr2 */
+ move $a3,$0 /* timespec */
+# move $a2,$a2 /* val */
+# li $a1,$a1 /* op */
+# move $a0,$a0 /* ftx */
+ li $v0,__NR_futex
+ syscall
+ .set noreorder
+ bnez $a3, 1f /* Check for error */
+ neg $v0 /* Negate error number if it's valid */
+ move $v0,$0 /* Otherwise return 0 */
+1:
+ .set reorder
+ addu $sp,4*6
+ j $ra
+ .end __futex_syscall3
+
+/* __futex_syscall4(*ftx, op, val)
+ * futex_syscall(*ftx, op, val, *timespec, *addr2, val3)
+ */
+ .type __futex_syscall4, @function
+ .global __futex_syscall4
+ .align 4
+ .ent __futex_syscall4
+__futex_syscall4:
+ subu $sp,4*6
+ sw $0,20($sp) /* val3 */
+ sw $0,16($sp) /* addr2 */
+# move $a3,$a3 /* timespec */
+# move $a2,$a2 /* val */
+# li $a1,$a1 /* op */
+# move $a0,$a0 /* ftx */
+ li $v0,__NR_futex
+ syscall
+ .set noreorder
+ bnez $a3, 1f /* Check for error */
+ neg $v0 /* Negate error number if it's valid */
+ move $v0,$0 /* Otherwise return 0 */
+1:
+ .set reorder
+ addu $sp,4*6
+ j $ra
+ .end __futex_syscall4