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authorThomas Fitzsimmons <fitzsim@redhat.com>2002-05-18 00:13:38 +0400
committerThomas Fitzsimmons <fitzsim@redhat.com>2002-05-18 00:13:38 +0400
commit7fc85bd1b9502b5fe30102e85f4743dbf45b9f01 (patch)
treebdfe520d8183ba54c11e0fcbb846b453a36f0364 /newlib/libc/sys
parentb05b7d84d6bd29dd07d0b493dad8d4d48493db3e (diff)
* 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.
Diffstat (limited to 'newlib/libc/sys')
-rw-r--r--newlib/libc/sys/h8300hms/Makefile.am2
-rw-r--r--newlib/libc/sys/h8300hms/Makefile.in4
-rw-r--r--newlib/libc/sys/h8300hms/read.c27
-rw-r--r--newlib/libc/sys/h8300hms/sys/syscall.h1
-rw-r--r--newlib/libc/sys/h8300hms/syscalls.c8
5 files changed, 31 insertions, 11 deletions
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