2004-06-09 Toralf Lund <toralf@procaptura.com>

        * libc/sys/arm/setjmp.S, libc/sys/arm/access.c: Move
        files from libc/sys/arm to libc/machine/arm.
        * libc/machine/arm/Makefile.am, libc/machine/arm/Makefile.in: Add
        library build support for files moved from libc/sys/arm.
        * libc/sys/arm/Makefile.am, libc/sys/arm/Makefile.in:  Remove
        references to access and setjmp.
        * configure.host: Add checks for newlib_may_supply_syscalls to
        determine whether or not to use sys/arm directory and use
        special compiler flags: ARM_RDI_MONITOR and ARM_RDP_MONITOR.

4 files changed, 211 insertions, 10 deletions

diff --git a/newlib/libc/machine/arm/Makefile.am b/newlib/libc/machine/arm/Makefile.am
index ec5ca63e2..9d54813c6 100644
--- a/newlib/libc/machine/arm/Makefile.am
+++ b/newlib/libc/machine/arm/Makefile.am
@@ -6,7 +6,7 @@ INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
 
 noinst_LIBRARIES = lib.a
 
-lib_a_SOURCES =
+lib_a_SOURCES = setjmp.S access.c
 
 ACLOCAL_AMFLAGS = -I ../../..
 CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
diff --git a/newlib/libc/machine/arm/Makefile.in b/newlib/libc/machine/arm/Makefile.in
index 527ea0a9b..6e84cc057 100644
--- a/newlib/libc/machine/arm/Makefile.in
+++ b/newlib/libc/machine/arm/Makefile.in
@@ -89,7 +89,7 @@ INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
 
 noinst_LIBRARIES = lib.a
 
-lib_a_SOURCES = 
+lib_a_SOURCES = setjmp.S access.c
 
 ACLOCAL_AMFLAGS = -I ../../..
 CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
@@ -103,7 +103,11 @@ DEFS = @DEFS@ -I. -I$(srcdir)
 CPPFLAGS = @CPPFLAGS@
 LIBS = @LIBS@
 lib_a_LIBADD = 
-lib_a_OBJECTS = 
+lib_a_OBJECTS =  setjmp.o access.o
+CFLAGS = @CFLAGS@
+COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@
 DIST_COMMON =  Makefile.am Makefile.in aclocal.m4 configure configure.in
 
 
@@ -166,9 +170,35 @@ lib.a: $(lib_a_OBJECTS) $(lib_a_DEPENDENCIES)
 	-rm -f lib.a
 	$(AR) cru lib.a $(lib_a_OBJECTS) $(lib_a_LIBADD)
 	$(RANLIB) lib.a
+
 tags: TAGS
-TAGS:
 
+ID: $(HEADERS) $(SOURCES) $(LISP)
+	list='$(SOURCES) $(HEADERS)'; \
+	unique=`for i in $$list; do echo $$i; done | \
+	  awk '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	here=`pwd` && cd $(srcdir) \
+	  && mkid -f$$here/ID $$unique $(LISP)
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)'; \
+	unique=`for i in $$list; do echo $$i; done | \
+	  awk '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \
+	  || (cd $(srcdir) && etags $(ETAGS_ARGS) $$tags  $$unique $(LISP) -o $$here/TAGS)
+
+mostlyclean-tags:
+
+clean-tags:
+
+distclean-tags:
+	-rm -f TAGS ID
+
+maintainer-clean-tags:
 
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
@@ -256,24 +286,24 @@ distclean-generic:
 
 maintainer-clean-generic:
 mostlyclean-am:  mostlyclean-noinstLIBRARIES mostlyclean-compile \
-		mostlyclean-generic
+		mostlyclean-tags mostlyclean-generic
 
 mostlyclean: mostlyclean-am
 
-clean-am:  clean-noinstLIBRARIES clean-compile clean-generic \
+clean-am:  clean-noinstLIBRARIES clean-compile clean-tags clean-generic \
 		mostlyclean-am
 
 clean: clean-am
 
 distclean-am:  distclean-noinstLIBRARIES distclean-compile \
-		distclean-generic clean-am
+		distclean-tags distclean-generic clean-am
 
 distclean: distclean-am
 	-rm -f config.status
 
 maintainer-clean-am:  maintainer-clean-noinstLIBRARIES \
-		maintainer-clean-compile maintainer-clean-generic \
-		distclean-am
+		maintainer-clean-compile maintainer-clean-tags \
+		maintainer-clean-generic distclean-am
 	@echo "This command is intended for maintainers to use;"
 	@echo "it deletes files that may require special tools to rebuild."
 
@@ -283,7 +313,8 @@ maintainer-clean: maintainer-clean-am
 .PHONY: mostlyclean-noinstLIBRARIES distclean-noinstLIBRARIES \
 clean-noinstLIBRARIES maintainer-clean-noinstLIBRARIES \
 mostlyclean-compile distclean-compile clean-compile \
-maintainer-clean-compile tags distdir info-am info dvi-am dvi check \
+maintainer-clean-compile tags mostlyclean-tags distclean-tags \
+clean-tags maintainer-clean-tags distdir info-am info dvi-am dvi check \
 check-am installcheck-am installcheck install-info-am install-info \
 install-exec-am install-exec install-data-am install-data install-am \
 install uninstall-am uninstall all-redirect all-am all installdirs \
diff --git a/newlib/libc/machine/arm/access.c b/newlib/libc/machine/arm/access.c
new file mode 100644
index 000000000..8e08b3a7f
--- /dev/null
+++ b/newlib/libc/machine/arm/access.c
@@ -0,0 +1,33 @@
+/* This is file ACCESS.C */
+/*
+ * Copyright (C) 1993 DJ Delorie
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms is permitted
+ * provided that the above copyright notice and following paragraph are
+ * duplicated in all such forms.
+ *
+ * This file is distributed WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int access(const char *fn, int flags)
+{
+  struct stat s;
+  if (stat(fn, &s))
+    return -1;
+  if (s.st_mode & S_IFDIR)
+    return 0;
+  if (flags & W_OK)
+  {
+    if (s.st_mode & S_IWRITE)
+      return 0;
+    return -1;
+  }
+  return 0;
+}
+	
diff --git a/newlib/libc/machine/arm/setjmp.S b/newlib/libc/machine/arm/setjmp.S
new file mode 100644
index 000000000..d37486090
--- /dev/null
+++ b/newlib/libc/machine/arm/setjmp.S
@@ -0,0 +1,137 @@
+/* This is a simple version of setjmp and longjmp.
+
+   Nick Clifton, Cygnus Solutions, 13 June 1997.  */
+
+/* ANSI concatenation macros.  */
+#define CONCAT(a, b)  CONCAT2(a, b)
+#define CONCAT2(a, b) a##b
+
+#ifndef __USER_LABEL_PREFIX__
+#error  __USER_LABEL_PREFIX__ not defined
+#endif
+
+#define SYM(x) CONCAT (__USER_LABEL_PREFIX__, x)
+
+#ifdef __ELF__
+#define TYPE(x) .type SYM(x),function
+#define SIZE(x) .size SYM(x), . - SYM(x)
+#else
+#define TYPE(x)
+#define SIZE(x)
+#endif
+
+/* Arm/Thumb interworking support:
+
+   The interworking scheme expects functions to use a BX instruction
+   to return control to their parent.  Since we need this code to work
+   in both interworked and non-interworked environments as well as with
+   older processors which do not have the BX instruction we do the 
+   following:
+	Test the return address.
+	If the bottom bit is clear perform an "old style" function exit.
+	(We know that we are in ARM mode and returning to an ARM mode caller).
+	Otherwise use the BX instruction to perform the function exit.
+
+   We know that we will never attempt to perform the BX instruction on 
+   an older processor, because that kind of processor will never be 
+   interworked, and a return address with the bottom bit set will never 
+   be generated.
+
+   In addition, we do not actually assemble the BX instruction as this would
+   require us to tell the assembler that the processor is an ARM7TDMI and
+   it would store this information in the binary.  We want this binary to be
+   able to be linked with binaries compiled for older processors however, so
+   we do not want such information stored there.  
+
+   If we are running using the APCS-26 convention however, then we never
+   test the bottom bit, because this is part of the processor status.  
+   Instead we just do a normal return, since we know that we cannot be 
+   returning to a Thumb caller - the Thumb does not support APCS-26.
+	
+   Function entry is much simpler.  If we are compiling for the Thumb we 
+   just switch into ARM mode and then drop through into the rest of the
+   function.  The function exit code will take care of the restore to
+   Thumb mode.  */
+
+#ifdef __APCS_26__
+#define RET	movs		pc, lr
+#else
+#define RET	tst		lr, #1; \
+	        moveq		pc, lr ; \
+.word           0xe12fff1e	/* bx lr */
+#endif
+
+#ifdef __thumb__
+#define	MODE		.thumb_func
+.macro PROLOGUE name
+	.code 16
+	bx	pc
+	nop	
+	.code 32
+SYM (.arm_start_of.\name):
+.endm
+#else
+#define	MODE		.code 32
+.macro PROLOGUE name
+.endm
+#endif
+	
+.macro FUNC_START name
+	.text
+	.align 2
+	MODE
+	.globl SYM (\name)
+	TYPE (\name)
+SYM (\name):
+	PROLOGUE \name
+.endm
+
+.macro FUNC_END name
+	RET
+	SIZE (\name)
+.endm
+	
+/* --------------------------------------------------------------------
+                 int setjmp (jmp_buf); 
+   -------------------------------------------------------------------- */
+	
+	FUNC_START setjmp
+
+	/* Save all the callee-preserved registers into the jump buffer.  */
+	stmea		a1!, { v1-v7, fp, ip, sp, lr }
+	
+#if 0	/* Simulator does not cope with FP instructions yet.  */
+#ifndef __SOFTFP__
+	/* Save the floating point registers.  */
+	sfmea		f4, 4, [a1]
+#endif
+#endif		
+	/* When setting up the jump buffer return 0.  */
+	mov		a1, #0
+
+	FUNC_END setjmp
+	
+/* --------------------------------------------------------------------
+		volatile void longjmp (jmp_buf, int);
+   -------------------------------------------------------------------- */
+	
+	FUNC_START longjmp
+
+	/* If we have stack extension code it ought to be handled here.  */
+	
+	/* Restore the registers, retrieving the state when setjmp() was called.  */
+	ldmfd		a1!, { v1-v7, fp, ip, sp, lr }
+	
+#if 0	/* Simulator does not cope with FP instructions yet.  */
+#ifndef __SOFTFP__
+	/* Restore floating point registers as well.  */
+	lfmfd		f4, 4, [a1]
+#endif
+#endif	
+	/* Put the return value into the integer result register.
+	   But if it is zero then return 1 instead.  */	
+	movs		a1, a2
+	moveq		a1, #1
+
+	FUNC_END longjmp
+