2007-08-23 Hidetaka Takano <hidetaka.takano@glb.toshiba.co.jp>

        Reduce the memory consumption of variable argument functions
        for SPU (cell):
        * libc/machine/spu/Makefile.am: Replace printf/scanf family C sources
          to assembler sources.
        * libc/machine/spu/Makefile.in: Regenerated.
        * libc/machine/spu/stdio.c: Add __check_init function wrapping
          CHECK_INIT macro to use from assembler routines.
        * libc/machine/spu/c99ppe.h: Add definitions for assembler code.
        * libc/machine/spu/fiprintf.S: New file.
        * libc/machine/spu/fiscanf.S: Ditto.
        * libc/machine/spu/fprintf.S: Ditto.
        * libc/machine/spu/fscanf.S: Ditto.
        * libc/machine/spu/iprintf.S: Ditto.
        * libc/machine/spu/iscanf.S: Ditto.
        * libc/machine/spu/printf.S: Ditto.
        * libc/machine/spu/scanf.S: Ditto.
        * libc/machine/spu/siprintf.S: Ditto.
        * libc/machine/spu/siscanf.S: Ditto.
        * libc/machine/spu/sniprintf.S: Ditto.
        * libc/machine/spu/snprintf.S: Ditto.
        * libc/machine/spu/sprintf.S: Ditto.
        * libc/machine/spu/sscanf.S: Ditto.
        * libc/machine/spu/stack_reg_va.S: Ditto.
        * libc/machine/spu/syscall.def: Ditto. (for maintenance)
        * libc/machine/spu/mk_syscalls: Ditto. (for maintenance)
        * libc/machine/spu/fiprintf.c: Removed. (Replaced by .S)
        * libc/machine/spu/fiscanf.c: Ditto.
        * libc/machine/spu/fprintf.c: Ditto.
        * libc/machine/spu/fscanf.c: Ditto.
        * libc/machine/spu/iprintf.c: Ditto.
        * libc/machine/spu/iscanf.c: Ditto.
        * libc/machine/spu/printf.c: Ditto.
        * libc/machine/spu/scanf.c: Ditto.
        * libc/machine/spu/siprintf.c: Ditto.
        * libc/machine/spu/siscanf.c: Ditto.
        * libc/machine/spu/sniprintf.c: Ditto.
        * libc/machine/spu/snprintf.c: Ditto.
        * libc/machine/spu/sprintf.c: Ditto.
        * libc/machine/spu/sscanf.c: Ditto.

1 files changed, 49 insertions, 0 deletions

diff --git a/newlib/libc/machine/spu/printf.S b/newlib/libc/machine/spu/printf.S
new file mode 100644
index 000000000..36feaf7aa
--- /dev/null
+++ b/newlib/libc/machine/spu/printf.S
@@ -0,0 +1,49 @@
+/*
+  Copyright (c) 2007, Toshiba Corporation
+
+  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.
+    * Neither the names of Toshiba nor the names of its
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+  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 "c99ppe.h"
+
+	.text
+	.align	4
+	GLOBL	printf
+printf:
+	stqd	$0, 16($sp)		/* save caller address */
+	il	$2, 1			/* number of fixed arguments */
+	brsl	$0, __stack_reg_va	/* save register to the stack frame */
+
+	il	$3, SPE_C99_SIGNALCODE
+	il	$4, SPE_C99_VPRINTF
+	ai	$5, $sp, 16*2		/* data ($3 save address) */
+	brsl	$0, __send_to_ppe
+
+	il	$2, 16*(SPE_STACK_REGS+2+2)
+	a	$sp, $sp, $2
+	lqd	$0, 16($sp)		/* load caller address */
+	bi      $0			/* return to caller */