From 7fc85bd1b9502b5fe30102e85f4743dbf45b9f01 Mon Sep 17 00:00:00 2001
From: Thomas Fitzsimmons <fitzsim@redhat.com>
Date: Fri, 17 May 2002 20:13:38 +0000
Subject: 	* newlib/libc/sys/h8300hms/Makeile.am (lib_a_SOURCES): Add
 read.c. 	* newlib/libc/sys/h8300hms/read.c: New file.  Magic trap 0xC8
 for sim. 	* newlib/libc/sys/h8300hms/syscalls.c: Move _read() to read.c.
 	* newlib/libs/sys/h8300hms/sys/syscall.h: New file.

---
 newlib/libc/sys/h8300hms/Makefile.am   |  2 +-
 newlib/libc/sys/h8300hms/Makefile.in   |  4 ++--
 newlib/libc/sys/h8300hms/read.c        | 27 +++++++++++++++++++++++++++
 newlib/libc/sys/h8300hms/sys/syscall.h |  1 +
 newlib/libc/sys/h8300hms/syscalls.c    |  8 --------
 5 files changed, 31 insertions(+), 11 deletions(-)
 create mode 100644 newlib/libc/sys/h8300hms/read.c
 create mode 100644 newlib/libc/sys/h8300hms/sys/syscall.h

(limited to 'newlib/libc/sys/h8300hms')

diff --git a/newlib/libc/sys/h8300hms/Makefile.am b/newlib/libc/sys/h8300hms/Makefile.am
index 131adc047..a6d0815d9 100644
--- a/newlib/libc/sys/h8300hms/Makefile.am
+++ b/newlib/libc/sys/h8300hms/Makefile.am
@@ -6,7 +6,7 @@ INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
 
 noinst_LIBRARIES = lib.a
 
-lib_a_SOURCES = syscalls.c write.c _exit.c sbrk.c misc.c crt1.c
+lib_a_SOURCES = syscalls.c write.c _exit.c read.c sbrk.c misc.c crt1.c
 
 all: crt0.o
 
diff --git a/newlib/libc/sys/h8300hms/Makefile.in b/newlib/libc/sys/h8300hms/Makefile.in
index 6539dcc85..dde61b4aa 100644
--- a/newlib/libc/sys/h8300hms/Makefile.in
+++ b/newlib/libc/sys/h8300hms/Makefile.in
@@ -88,7 +88,7 @@ INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
 
 noinst_LIBRARIES = lib.a
 
-lib_a_SOURCES = syscalls.c write.c _exit.c sbrk.c misc.c crt1.c
+lib_a_SOURCES = syscalls.c write.c _exit.c read.c sbrk.c misc.c crt1.c
 
 ACLOCAL_AMFLAGS = -I ../../..
 CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
@@ -102,7 +102,7 @@ DEFS = @DEFS@ -I. -I$(srcdir)
 CPPFLAGS = @CPPFLAGS@
 LIBS = @LIBS@
 lib_a_LIBADD = 
-lib_a_OBJECTS =  syscalls.o write.o _exit.o sbrk.o misc.o crt1.o
+lib_a_OBJECTS =  syscalls.o write.o _exit.o read.o sbrk.o misc.o crt1.o
 CFLAGS = @CFLAGS@
 COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 CCLD = $(CC)
diff --git a/newlib/libc/sys/h8300hms/read.c b/newlib/libc/sys/h8300hms/read.c
new file mode 100644
index 000000000..ba6b9e929
--- /dev/null
+++ b/newlib/libc/sys/h8300hms/read.c
@@ -0,0 +1,27 @@
+#include "sys/syscall.h"
+
+int _read(file, ptr, len)
+     int file;
+     char *ptr;
+     int len;
+{
+	register int ret asm("r0") ;
+
+	/* Type cast int as short so that we can copy int values into 16 bit 
+	   registers in case of -mint32 switch is given.
+	   This is not going to affect data as file= 0 for stdin and len=1024 */
+
+	asm("mov.b %0, r0l"::  "i" (SYS_read)) ; /* Syscall Number */
+	asm("mov.w %0, r1" :: "r"((short)file) :"r1", "r2", "r3") ;
+	asm("mov.w %0, r3" :: "r"((short)len) :"r1", "r2", "r3") ;
+#ifdef __H8300__
+	asm("mov.w %0, r2" :: "r"(ptr) :"r1", "r2", "r3") ;
+#else
+	asm("mov.l %0, er2" :: "r"(ptr) :"r1", "er2", "r3") ;
+#endif
+	// This is magic trap similar to _write for simulator
+	asm("jsr @@0xc8") ;
+  return ret;
+}
+
+
diff --git a/newlib/libc/sys/h8300hms/sys/syscall.h b/newlib/libc/sys/h8300hms/sys/syscall.h
new file mode 100644
index 000000000..fba03549c
--- /dev/null
+++ b/newlib/libc/sys/h8300hms/sys/syscall.h
@@ -0,0 +1 @@
+#define	SYS_read	4
diff --git a/newlib/libc/sys/h8300hms/syscalls.c b/newlib/libc/sys/h8300hms/syscalls.c
index 9f89c55d5..3ebac8843 100644
--- a/newlib/libc/sys/h8300hms/syscalls.c
+++ b/newlib/libc/sys/h8300hms/syscalls.c
@@ -5,14 +5,6 @@
 #include <sys/stat.h>
 #include <errno.h>
 
-int _DEFUN(_read,(file, ptr, len),
-	   int file _AND
-	   char *ptr _AND
-	   int len)
-{
-  return 0;
-}
-
 
 int _DEFUN(_lseek,(file, ptr, dir),
 	  int file _AND
-- 
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