New files from Jiri Gaisler <jgais@ws.estec.esa.nl>.

c/src/lib/libcpu/sparc/syscall/Makefile.in

@@ -0,0 +1,71 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ../../../../../..
+subdir = c/src/lib/libcpu/sparc/syscall
+
+INSTALL = @INSTALL@
+
+RTEMS_ROOT = $(top_srcdir)/@RTEMS_TOPdir@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+VPATH = @srcdir@
+
+PGM=${ARCH}/syscall.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES=
+C_FILES=$(C_PIECES:%=%.c)
+C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES=
+
+# Assembly source names, if any, go here -- minus the .S
+S_PIECES=syscall
+S_FILES=$(S_PIECES:%=%.S)
+S_O_FILES=$(S_FILES:%.S=${ARCH}/%.o)
+
+SRCS=$(C_FILES) $(CC_FILES) $(H_FILES) $(S_FILES)
+OBJS=$(C_O_FILES) $(CC_O_FILES) $(S_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/${RTEMS_BSP}.cfg
+include $(RTEMS_ROOT)/make/leaf.cfg
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES  +=
+CPPFLAGS +=
+CFLAGS   += $(CFLAGS_OS_V)
+
+LD_PATHS  +=
+LD_LIBS   +=
+LDFLAGS   +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+	$(make-rel)
+
+all:	${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by
+#    libbsp/sparc/BSP/wrapup/Makefile
+install:  all
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	cd $(top_builddir) \
+	 && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status

c/src/lib/libcpu/sparc/syscall/syscall.S

@@ -0,0 +1,78 @@
+/*
+ *  systrap.S
+ *
+ *  This file contains emulated system calls using software trap 0.
+ *  The following calls are supported:
+ *
+ *    + SYS_exit	(halt)
+ *    + SYS_irqdis	(disable interrupts)
+ *    + SYS_irqset	(set interrupt level)
+ * 
+ *  COPYRIGHT:
+ *
+ *  COPYRIGHT (c) 1995. European Space Agency.
+ *
+ *  This terms of the RTEMS license apply to this file.
+ *
+ */
+
+#include <asm.h>
+#include "syscall.h"
+
+        .seg    "text"
+        /*
+         *  system call
+         *
+         *  On entry:
+         *
+         *    l0 = psr (from trap table)
+         *    l1 = pc
+         *    l2 = npc
+         *    g1 = system call id
+         */
+
+        PUBLIC(syscall)
+
+SYM(syscall):
+
+	subcc   %g1, 2, %g0		! syscall 2, disable interrupts
+	bne 	3f
+	or    	%l0, 0x0f00, %l4	! set PIL=15
+	mov   	%l4, %psr
+	or	%l0, SPARC_PSR_ET_MASK, %i0	! return old psr with ET=1
+	ba,a	9f
+3:
+	subcc   %g1, 3, %g0		! syscall 3, enable interrupts
+	bne 	1f
+	and	%i0, SPARC_PSR_PIL_MASK, %l4
+	andn	%l0, SPARC_PSR_PIL_MASK, %l5
+	or	%l5, %l4, %l4
+	mov   	%l4, %psr
+	ba,a	9f
+
+1:					
+	ta	0			! halt 
+9:					! leave
+	mov	0, %g1			! clear %g1 
+        jmpl    %l2, %g0
+        rett    %l2 + 4
+
+        PUBLIC(sparc_disable_interrupts)
+
+SYM(sparc_disable_interrupts):
+
+	mov	SYS_irqdis, %g1
+	ta	0
+	retl
+	nop
+
+        PUBLIC(sparc_enable_interrupts)
+
+SYM(sparc_enable_interrupts):
+
+	mov	SYS_irqen, %g1
+	ta	0
+	retl
+	nop
+
+/* end of file */

c/src/lib/libcpu/sparc/syscall/syscall.h

@@ -0,0 +1,4 @@
+
+#define SYS_exit        1
+#define SYS_irqdis      2
+#define SYS_irqen       3