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[PATCH 1/3] Initial PRU port
- From: Dimitar Dimitrov <dimitar at dinux dot eu>
- To: newlib at sourceware dot org
- Cc: Dimitar Dimitrov <dimitar at dinux dot eu>
- Date: Wed, 13 Jun 2018 22:59:32 +0300
- Subject: [PATCH 1/3] Initial PRU port
Hi,
I would like to contribute newlib port for the TI PRU I/O processor [1] [2].
Binutils port has already been merged. I've sent patches for gcc.
The following files need to be regenerated. Let me know if I should post a separate patch for them:
configure
libgloss/configure
libgloss/pru/aclocal.m4
libgloss/pru/configure
newlib/libc/machine/configure
newlib/libc/machine/pru/Makefile.in
newlib/libc/machine/pru/aclocal.m4
newlib/libc/machine/pru/configure
newlib/libm/machine/configure
newlib/libm/machine/pru/Makefile.in
newlib/libm/machine/pru/aclocal.m4
newlib/libm/machine/pru/configure
Regards,
Dimitar
[1] http://processors.wiki.ti.com/index.php/PRU-ICSS
[2] http://beagleboard.org/pru
Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
---
configure.ac | 4 +
libgloss/configure.in | 2 +
libgloss/pru/Makefile.in | 147 ++++
libgloss/pru/close.c | 24 +
libgloss/pru/configure.in | 66 ++
libgloss/pru/crt0.S | 84 +++
libgloss/pru/device-specs/am335x.pru0 | 5 +
libgloss/pru/device-specs/am335x.pru1 | 5 +
libgloss/pru/device-specs/am437x.icss0.pru0 | 5 +
libgloss/pru/device-specs/am437x.icss0.pru1 | 5 +
libgloss/pru/device-specs/am437x.icss1.pru0 | 5 +
libgloss/pru/device-specs/am437x.icss1.pru1 | 5 +
libgloss/pru/device-specs/sim | 5 +
libgloss/pru/do_global_dtors.c | 40 ++
libgloss/pru/fstat.c | 28 +
libgloss/pru/getpid.c | 24 +
libgloss/pru/gettimeofday.c | 31 +
libgloss/pru/inbyte.c | 38 ++
libgloss/pru/include/pru/am335x.h | 772 ++++++++++++++++++++++
libgloss/pru/include/pru/io.h | 124 ++++
libgloss/pru/isatty.c | 26 +
libgloss/pru/kill.c | 28 +
libgloss/pru/ldscripts/gen-ld-scripts.sh | 61 ++
libgloss/pru/ldscripts/pruelf-am335x.pru0.x | 201 ++++++
libgloss/pru/ldscripts/pruelf-am335x.pru1.x | 201 ++++++
libgloss/pru/ldscripts/pruelf-am437x.icss0.pru0.x | 201 ++++++
libgloss/pru/ldscripts/pruelf-am437x.icss0.pru1.x | 201 ++++++
libgloss/pru/ldscripts/pruelf-am437x.icss1.pru0.x | 201 ++++++
libgloss/pru/ldscripts/pruelf-am437x.icss1.pru1.x | 201 ++++++
libgloss/pru/ldscripts/pruelf-sim.x | 201 ++++++
libgloss/pru/lseek.c | 31 +
libgloss/pru/open.c | 30 +
libgloss/pru/outbyte.c | 24 +
libgloss/pru/print.c | 25 +
libgloss/pru/putnum.c | 42 ++
libgloss/pru/raise.c | 24 +
libgloss/pru/sbrk.c | 46 ++
libgloss/pru/stat.c | 31 +
libgloss/pru/syscalls.S | 32 +
libgloss/pru/unlink.c | 30 +
newlib/configure.host | 14 +-
newlib/libc/include/machine/ieeefp.h | 4 +
newlib/libc/include/machine/setjmp.h | 5 +
newlib/libc/machine/configure.in | 1 +
newlib/libc/machine/pru/Makefile.am | 16 +
newlib/libc/machine/pru/configure.in | 14 +
newlib/libc/machine/pru/setjmp.s | 46 ++
47 files changed, 3355 insertions(+), 1 deletion(-)
create mode 100644 libgloss/pru/Makefile.in
create mode 100644 libgloss/pru/close.c
create mode 100644 libgloss/pru/configure.in
create mode 100644 libgloss/pru/crt0.S
create mode 100644 libgloss/pru/device-specs/am335x.pru0
create mode 100644 libgloss/pru/device-specs/am335x.pru1
create mode 100644 libgloss/pru/device-specs/am437x.icss0.pru0
create mode 100644 libgloss/pru/device-specs/am437x.icss0.pru1
create mode 100644 libgloss/pru/device-specs/am437x.icss1.pru0
create mode 100644 libgloss/pru/device-specs/am437x.icss1.pru1
create mode 100644 libgloss/pru/device-specs/sim
create mode 100644 libgloss/pru/do_global_dtors.c
create mode 100644 libgloss/pru/fstat.c
create mode 100644 libgloss/pru/getpid.c
create mode 100644 libgloss/pru/gettimeofday.c
create mode 100644 libgloss/pru/inbyte.c
create mode 100644 libgloss/pru/include/pru/am335x.h
create mode 100644 libgloss/pru/include/pru/io.h
create mode 100644 libgloss/pru/isatty.c
create mode 100644 libgloss/pru/kill.c
create mode 100755 libgloss/pru/ldscripts/gen-ld-scripts.sh
create mode 100644 libgloss/pru/ldscripts/pruelf-am335x.pru0.x
create mode 100644 libgloss/pru/ldscripts/pruelf-am335x.pru1.x
create mode 100644 libgloss/pru/ldscripts/pruelf-am437x.icss0.pru0.x
create mode 100644 libgloss/pru/ldscripts/pruelf-am437x.icss0.pru1.x
create mode 100644 libgloss/pru/ldscripts/pruelf-am437x.icss1.pru0.x
create mode 100644 libgloss/pru/ldscripts/pruelf-am437x.icss1.pru1.x
create mode 100644 libgloss/pru/ldscripts/pruelf-sim.x
create mode 100644 libgloss/pru/lseek.c
create mode 100644 libgloss/pru/open.c
create mode 100644 libgloss/pru/outbyte.c
create mode 100644 libgloss/pru/print.c
create mode 100644 libgloss/pru/putnum.c
create mode 100644 libgloss/pru/raise.c
create mode 100644 libgloss/pru/sbrk.c
create mode 100644 libgloss/pru/stat.c
create mode 100644 libgloss/pru/syscalls.S
create mode 100644 libgloss/pru/unlink.c
create mode 100644 newlib/libc/machine/pru/Makefile.am
create mode 100644 newlib/libc/machine/pru/configure.in
create mode 100644 newlib/libc/machine/pru/setjmp.s
diff --git a/configure.ac b/configure.ac
index 3cb95d69d..021d3645a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -697,6 +697,10 @@ case "${target}" in
powerpc-*-aix* | rs6000-*-aix*)
noconfigdirs="$noconfigdirs target-libssp"
;;
+ pru-*-*)
+ # No hosted I/O support.
+ noconfigdirs="$noconfigdirs target-libssp"
+ ;;
rl78-*-*)
# libssp uses a misaligned load to trigger a fault, but the RL78
# doesn't fault for those - instead, it gives a build-time error
diff --git a/libgloss/configure.in b/libgloss/configure.in
index 6da164352..9f39e0517 100644
--- a/libgloss/configure.in
+++ b/libgloss/configure.in
@@ -175,6 +175,8 @@ case "${target}" in
;;
or1k-*-* | or1knd-*-* )
AC_CONFIG_SUBDIRS([or1k])
+ pru-*-*)
+ AC_CONFIG_SUBDIRS([pru])
;;
esac
diff --git a/libgloss/pru/Makefile.in b/libgloss/pru/Makefile.in
new file mode 100644
index 000000000..4baa5c387
--- /dev/null
+++ b/libgloss/pru/Makefile.in
@@ -0,0 +1,147 @@
+# Copyright (c) 2014-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+#
+# The authors hereby grant permission to use, copy, modify, distribute,
+# and license this software and its documentation for any purpose, provided
+# that existing copyright notices are retained in all copies and that this
+# notice is included verbatim in any distributions. No written agreement,
+# license, or royalty fee is required for any of the authorized uses.
+# Modifications to this software may be copyrighted by their authors
+# and need not follow the licensing terms described here, provided that
+# the new terms are clearly indicated on the first page of each file where
+# they apply.
+
+VPATH = @srcdir@ @srcdir@/..
+
+srcdir = @srcdir@
+objdir = .
+srcroot = $(srcdir)/../..
+objroot = $(objdir)/../..
+top_srcdir = @top_srcdir@
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+host_alias = @host_alias@
+target_alias = @target_alias@
+
+bindir = @bindir@
+libdir = @libdir@
+includedir = @includedir@
+tooldir = $(exec_prefix)/$(target_alias)
+
+# Multilib support variables.
+# TOP is used instead of MULTI{BUILD,SRC}TOP.
+MULTIDIRS =
+MULTISUBDIR =
+
+SHELL = /bin/sh
+
+mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
+
+CC = @CC@
+
+AS = @AS@
+
+AR = @AR@
+
+LD = @LD@
+
+RANLIB = @RANLIB@
+
+OBJDUMP = `t='$(program_transform_name)'; echo objdump | sed -e $$t`
+OBJCOPY = `t='$(program_transform_name)'; echo objcopy | sed -e $$t`
+
+# linker scripts
+SCRIPTS = `ls ${srcdir}/ldscripts/*.x`
+
+# object files needed
+OBJS = \
+ close.o do_global_dtors.o fstat.o getpid.o gettimeofday.o \
+ isatty.o kill.o lseek.o open.o putnum.o raise.o \
+ inbyte.o outbyte.o sbrk.o stat.o syscalls.o unlink.o \
+ do_global_dtors.o
+
+# Object files specific to particular targets.
+EVALOBJS = ${OBJS}
+
+CRTOBJS = crt0.o crt0-minrt.o
+OUTPUTS = libgloss.a $(CRTOBJS)
+
+INCLUDES = -I$(srcdir)/..
+
+# Note that when building the library, ${MULTILIB} is not the way multilib
+# options are passed; they're passed in $(CFLAGS).
+CFLAGS_FOR_TARGET = ${MULTILIB} ${INCLUDES}
+LDFLAGS_FOR_TARGET = ${MULTILIB}
+
+.c.o:
+ $(CC) $(CFLAGS_FOR_TARGET) -Os $(INCLUDES) -c $(CFLAGS) $<
+
+.C.o:
+ $(CC) $(CFLAGS_FOR_TARGET) -Os $(INCLUDES) -c $(CFLAGS) $<
+.s.o:
+ $(AS) $(ASFLAGS_FOR_TARGET) $(INCLUDES) $(ASFLAGS) -o $*.o $<
+
+#
+# GCC knows to run the preprocessor on .S files before it assembles them.
+#
+.S.o:
+ $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) -c $<
+
+all: ${OUTPUTS} copy_scripts_to_objdir
+
+copy_scripts_to_objdir: $(srcdir)/ldscripts/gen-ld-scripts.sh
+ cp $(SCRIPTS) $(objdir)
+
+#
+# here's where we build the library for each target
+#
+
+libgloss.a: $(EVALOBJS)
+ ${AR} ${ARFLAGS} $@ $(EVALOBJS)
+ ${RANLIB} $@
+
+# C Runtime Library startup code.
+crt0.o: $(srcdir)/crt0.S
+ $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) $< -c -o $@
+
+crt0-minrt.o: $(srcdir)/crt0.S
+ $(CC) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) -DMINRT $< -c -o $@
+
+doc:
+
+clean mostlyclean:
+ rm -f $(OUTPUTS) *.i *~ *.o *-test *.srec *.dis *.map *.x
+
+distclean maintainer-clean realclean: clean
+ rm -f Makefile config.status $(OUTPUTS)
+
+.PHONY: install info install-info clean-info
+install: $(OUTPUTS) $(srcdir)/ldscripts/gen-ld-scripts.sh
+ for outputs in ${OUTPUTS}; do\
+ ${INSTALL_DATA} $${outputs} ${DESTDIR}${tooldir}/lib${MULTISUBDIR}/$${outputs}; \
+ done
+ for s in $(SCRIPTS); do \
+ b=`basename $$s`; \
+ ${INSTALL_DATA} $$s ${DESTDIR}${tooldir}/lib${MULTISUBDIR}/$$b ;\
+ done
+ ${mkinstalldirs} ${DESTDIR}${tooldir}/include/pru; \
+ for i in ${srcdir}/include/pru/*.h; do \
+ b=`basename $$i`; \
+ $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/pru/$$b ;\
+ done
+ ${mkinstalldirs} ${DESTDIR}${tooldir}/lib${MULTISUBDIR}/device-specs; \
+ for s in ${srcdir}/device-specs/*; do \
+ b=`basename $$s`; \
+ $(INSTALL_DATA) $$s $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/device-specs/$$b ;\
+ done
+
+info:
+install-info:
+clean-info:
+
+Makefile: $(srcdir)/Makefile.in config.status @host_makefile_frag_path@
+ $(SHELL) config.status
+
+config.status: $(srcdir)/configure
+ $(SHELL) config.status --recheck
diff --git a/libgloss/pru/close.c b/libgloss/pru/close.c
new file mode 100644
index 000000000..c1a14fbcb
--- /dev/null
+++ b/libgloss/pru/close.c
@@ -0,0 +1,24 @@
+/* close.c -- close a file descriptor.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+/*
+ * close -- We don't need to do anything, but pretend we did.
+ */
+int
+_close (int fd)
+{
+ return (0);
+}
diff --git a/libgloss/pru/configure.in b/libgloss/pru/configure.in
new file mode 100644
index 000000000..2a4c946e8
--- /dev/null
+++ b/libgloss/pru/configure.in
@@ -0,0 +1,66 @@
+# Copyright (c) 2008, 2009, 2011, 2013 Red Hat, Inc. All rights reserved.
+#
+# This copyrighted material is made available to anyone wishing to use, modify,
+# copy, or redistribute it subject to the terms and conditions of the BSD
+# License. This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
+# is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
+# are incorporated in the source code or documentation are not subject to the BSD
+# License and may only be used or replicated with the express permission of
+# Red Hat, Inc.
+
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.59)
+AC_INIT(crt0.S)
+
+if test "${enable_shared}" = "yes" ; then
+ echo "Shared libraries not supported for cross compiling, ignored"
+fi
+
+if test "$srcdir" = "." ; then
+ if test "${with_target_subdir}" != "." ; then
+ libgloss_topdir="${srcdir}/${with_multisrctop}../../.."
+ else
+ libgloss_topdir="${srcdir}/${with_multisrctop}../.."
+ fi
+else
+ libgloss_topdir="${srcdir}/../.."
+fi
+AC_CONFIG_AUX_DIR($libgloss_topdir)
+
+AC_CANONICAL_SYSTEM
+AC_ARG_PROGRAM
+
+AC_PROG_INSTALL
+
+LIB_AC_PROG_CC
+AS=${AS-as}
+AC_SUBST(AS)
+AR=${AR-ar}
+AC_SUBST(AR)
+LD=${LD-ld}
+AC_SUBST(LD)
+AC_PROG_RANLIB
+LIB_AM_PROG_AS
+
+host_makefile_frag=${srcdir}/../config/default.mh
+
+dnl We have to assign the same value to other variables because autoconf
+dnl doesn't provide a mechanism to substitute a replacement keyword with
+dnl arbitrary data or pathnames.
+dnl
+host_makefile_frag_path=$host_makefile_frag
+AC_SUBST(host_makefile_frag_path)
+AC_SUBST_FILE(host_makefile_frag)
+
+AC_CONFIG_FILES(Makefile,
+. ${libgloss_topdir}/config-ml.in,
+srcdir=${srcdir}
+target=${target}
+with_multisubdir=${with_multisubdir}
+ac_configure_args="${ac_configure_args} --enable-multilib"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+libgloss_topdir=${libgloss_topdir}
+)
+AC_OUTPUT
diff --git a/libgloss/pru/crt0.S b/libgloss/pru/crt0.S
new file mode 100644
index 000000000..dc4def820
--- /dev/null
+++ b/libgloss/pru/crt0.S
@@ -0,0 +1,84 @@
+/* crt0.S -- PRU startup code
+ *
+ * Copyright (c) 2014-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "newlib.h"
+
+ .extern main
+ .extern exit
+
+ .text
+ .section .init0, "x"
+ .global _start
+_start:
+ /* Initialize stack pointer. */
+ ldi32 sp, _stack_top
+
+ /* DATA and BSS are handled by the loader, so nothing to do here. */
+
+#if !defined(MINRT)
+ .extern _do_global_dtors
+ /* Ensure destructors get called. Call is per GNU ABI (i.e. 32-bit
+ function pointers). But it is also compatible with the TI ABI
+ since GCC supports only little endian PRU.
+
+ WARNING: Keep this compatible with both ABIs! */
+ ldi r14, %pmem(_do_global_dtors)
+ call atexit
+
+ /* Call constructors. Use non-call-clobbered registers. */
+ ldi r5, __init_array_begin
+ ldi r6, __init_array_end
+ctors_loop:
+ qbeq ctors_done, r5, r6
+ /* ABI dictates 16-bit IMEM pointers. */
+ lbbo r7, r5, 0, 2
+ call r7.w0
+ add r5, r5, 2
+ jmp ctors_loop
+ctors_done:
+#endif
+
+ /* Just in case main() tries to access argc, argv[] and envp. */
+ zero r14, 3 * 4
+
+#if !defined(MINRT)
+ .weak __c_args__
+ ldi32 r5, __c_args__
+ qbeq __skip_c_args, r5, 0
+ lbbo r14, r5, 0, 4 /* argc */
+ add r15, r5, 4 /* argv */
+__skip_c_args:
+#endif
+
+ /* Call main */
+ call main
+
+#if !defined(MINRT)
+ /* Call exit */
+ call exit
+#endif
+
+ /* We should never reach here. */
+_crt_exit:
+ halt
+ jmp _crt_exit
+
+ /* PRU obviously has no shared libraries, but dso_handle
+ helps to achieve better GCC test coverage. Besides,
+ it should be free with minrt. */
+ .section .data
+ .global __dso_handle
+ .weak __dso_handle
+__dso_handle:
+ .long 0
diff --git a/libgloss/pru/device-specs/am335x.pru0 b/libgloss/pru/device-specs/am335x.pru0
new file mode 100644
index 000000000..0594be488
--- /dev/null
+++ b/libgloss/pru/device-specs/am335x.pru0
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__AM335X_PRU0__ -D__AM335X_
+
+*link_device:
+%{!r:-Tpruelf-am335x.pru0.x}
diff --git a/libgloss/pru/device-specs/am335x.pru1 b/libgloss/pru/device-specs/am335x.pru1
new file mode 100644
index 000000000..d5cdb34fd
--- /dev/null
+++ b/libgloss/pru/device-specs/am335x.pru1
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__AM335X_PRU1__ -D__AM335X_
+
+*link_device:
+%{!r:-Tpruelf-am335x.pru1.x}
diff --git a/libgloss/pru/device-specs/am437x.icss0.pru0 b/libgloss/pru/device-specs/am437x.icss0.pru0
new file mode 100644
index 000000000..67f244372
--- /dev/null
+++ b/libgloss/pru/device-specs/am437x.icss0.pru0
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__AM437X_ICSS0_PRU0__ -D__AM437X_ICSS0__ -D__AM437X__
+
+*link_device:
+%{!r:-Tpruelf-am437x.icss0.pru0.x}
diff --git a/libgloss/pru/device-specs/am437x.icss0.pru1 b/libgloss/pru/device-specs/am437x.icss0.pru1
new file mode 100644
index 000000000..5ff978c7e
--- /dev/null
+++ b/libgloss/pru/device-specs/am437x.icss0.pru1
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__AM437X_ICSS0_PRU1__ -D__AM437X_ICSS0__ -D__AM437X__
+
+*link_device:
+%{!r:-Tpruelf-am437x.icss0.pru1.x}
diff --git a/libgloss/pru/device-specs/am437x.icss1.pru0 b/libgloss/pru/device-specs/am437x.icss1.pru0
new file mode 100644
index 000000000..eb0f7f450
--- /dev/null
+++ b/libgloss/pru/device-specs/am437x.icss1.pru0
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__AM437X_ICSS1_PRU0__ -D__AM437X_ICSS1__ -D__AM437X__
+
+*link_device:
+%{!r:-Tpruelf-am437x.icss1.pru0.x}
diff --git a/libgloss/pru/device-specs/am437x.icss1.pru1 b/libgloss/pru/device-specs/am437x.icss1.pru1
new file mode 100644
index 000000000..692f8f689
--- /dev/null
+++ b/libgloss/pru/device-specs/am437x.icss1.pru1
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__AM437X_ICSS1_PRU1__ -D__AM437X_ICSS1__ -D__AM437X__
+
+*link_device:
+%{!r:-Tpruelf-am437x.icss1.pru1.x}
diff --git a/libgloss/pru/device-specs/sim b/libgloss/pru/device-specs/sim
new file mode 100644
index 000000000..50d4689e0
--- /dev/null
+++ b/libgloss/pru/device-specs/sim
@@ -0,0 +1,5 @@
+*cpp_device:
+-D__SIM__
+
+*link_device:
+%{!r:-Tpruelf-sim.x}
diff --git a/libgloss/pru/do_global_dtors.c b/libgloss/pru/do_global_dtors.c
new file mode 100644
index 000000000..4d1621147
--- /dev/null
+++ b/libgloss/pru/do_global_dtors.c
@@ -0,0 +1,40 @@
+/* do_global_dtors - invoke global destructors
+ *
+ * Copyright (c) 2015-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <stdint.h>
+#include <_ansi.h>
+#include "syscall.h"
+
+extern void *__fini_array_begin;
+extern void *__fini_array_end;
+
+/*
+ * _do_global_dtors
+ */
+void
+_do_global_dtors (void)
+{
+ /* ABI dictates pointers in init/fini arrays are 16-bit. */
+ const uint16_t *end = (uint16_t *)&__fini_array_end;
+ const uint16_t *begin = (uint16_t *)&__fini_array_begin;
+ const uint16_t *p;
+ void (**dtor) (void);
+
+ /* call destructors in reverse order */
+ for (p = end; p > begin; ) {
+ p--;
+ dtor = (void *)p;
+ (*dtor) ();
+ }
+}
diff --git a/libgloss/pru/fstat.c b/libgloss/pru/fstat.c
new file mode 100644
index 000000000..7e562c3f6
--- /dev/null
+++ b/libgloss/pru/fstat.c
@@ -0,0 +1,28 @@
+/* fstat.c -- get status of a file.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <sys/stat.h>
+#include "glue.h"
+
+/*
+ * fstat -- Since we have no file system, we just return an error.
+ */
+int
+_fstat (int fd, struct stat *buf)
+{
+ buf->st_mode = S_IFCHR; /* Always pretend to be a tty */
+ buf->st_blksize = 0;
+
+ return (0);
+}
diff --git a/libgloss/pru/getpid.c b/libgloss/pru/getpid.c
new file mode 100644
index 000000000..cc9e85749
--- /dev/null
+++ b/libgloss/pru/getpid.c
@@ -0,0 +1,24 @@
+/* getpid.c -- get the current process id.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+/*
+ * getpid -- only one process, so just return 1.
+ */
+int
+_getpid (void)
+{
+ return __MYPID;
+}
diff --git a/libgloss/pru/gettimeofday.c b/libgloss/pru/gettimeofday.c
new file mode 100644
index 000000000..b4b7cb078
--- /dev/null
+++ b/libgloss/pru/gettimeofday.c
@@ -0,0 +1,31 @@
+/* gettimeofday.c -- get the current time of day
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <errno.h>
+#include "glue.h"
+
+#undef errno
+extern int errno;
+struct timeval;
+
+/*
+ * gettimeofday -- no clock
+ * struct timeval * tp, void * tzvp
+ */
+int
+_gettimeofday (struct timeval * tp, void * tzvp)
+{
+ errno = ENOSYS;
+ return -1;
+}
diff --git a/libgloss/pru/inbyte.c b/libgloss/pru/inbyte.c
new file mode 100644
index 000000000..2ea885216
--- /dev/null
+++ b/libgloss/pru/inbyte.c
@@ -0,0 +1,38 @@
+/* inbyte.c -- inbyte function for remoteproc
+ *
+ * Copyright (c) 2014-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <errno.h>
+#include <_ansi.h>
+#include <stdio.h>
+#include <unistd.h>
+#include "glue.h"
+
+extern ssize_t _read(int fd, void *b, size_t count);
+
+int
+inbyte (void)
+{
+ ssize_t n;
+ char c;
+
+ /* PRU has no interrupts, so it is inherently thread-safe. */
+ n = _read(STDIN_FILENO, &c, 1);
+ if (n < 0)
+ return n;
+ else if (n == 0)
+ return -ENODATA;
+ else
+ return 1;
+}
+
diff --git a/libgloss/pru/include/pru/am335x.h b/libgloss/pru/include/pru/am335x.h
new file mode 100644
index 000000000..a594f359e
--- /dev/null
+++ b/libgloss/pru/include/pru/am335x.h
@@ -0,0 +1,772 @@
+/* pru/am335x.h -- PRU I/O registers definitions for PRU inside AM335x SoCs
+
+ Copyright (c) 2015-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following condition
+ is met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ 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 HOLDER 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.
+ */
+
+#ifndef __PRU_AM335X_H__
+#define __PRU_AM335X_H__
+
+
+/* Local memory map (TRM section 4.3.2.1) */
+#define __LOCAL_DATA_RAM_BASE 0x00000000
+#define __PEER_DATA_RAM_BASE 0x00002000
+#define __SHARED_DATA_RAM_BASE 0x00010000
+#define __INTC_BASE 0x00020000
+#define __PRU0_CTRL_REGS_BASE 0x00022000
+#define __PRU1_CTRL_REGS_BASE 0x00024000
+#define __CFG_BASE 0x00026000
+#define __UART0_BASE 0x00028000
+#define __IEP_BASE 0x0002E000
+#define __ECAP0_BASE 0x00030000
+#define __MII_RT_CFG_BASE 0x00032000
+#define __MII_MDIO_BASE 0x00034000
+#define __SYS_OCP_HP0_BASE 0x00080000
+
+/* ====================== CTABLE base addresses ====================== */
+#pragma ctable_entry 0 0x00020000
+#pragma ctable_entry 1 0x48040000
+#pragma ctable_entry 2 0x4802a000
+#pragma ctable_entry 3 0x00030000
+#pragma ctable_entry 4 0x00026000
+#pragma ctable_entry 5 0x48060000
+#pragma ctable_entry 6 0x48030000
+#pragma ctable_entry 7 0x00028000
+#pragma ctable_entry 8 0x46000000
+#pragma ctable_entry 9 0x4a100000
+#pragma ctable_entry 10 0x48318000
+#pragma ctable_entry 11 0x48022000
+#pragma ctable_entry 12 0x48024000
+#pragma ctable_entry 13 0x48318000
+#pragma ctable_entry 14 0x481cc000
+#pragma ctable_entry 15 0x481d0000
+#pragma ctable_entry 16 0x481a0000
+#pragma ctable_entry 17 0x4819c000
+#pragma ctable_entry 18 0x48300000
+#pragma ctable_entry 19 0x48302000
+#pragma ctable_entry 20 0x48304000
+#pragma ctable_entry 21 0x00032400
+#pragma ctable_entry 22 0x480c8000
+#pragma ctable_entry 23 0x480ca000
+/* 24-31 are user-defined base addresses. */
+
+/* ====================== PRU CTRL module ====================== */
+#define PRU_CTRL_CONTROL_OFFS 0x00
+#define PRU_CTRL_STATUS_OFFS 0x04
+#define PRU_CTRL_WAKEUP_EN_OFFS 0x08
+#define PRU_CTRL_CYCLE_OFFS 0x0c
+#define PRU_CTRL_STALL_OFFS 0x10
+#define PRU_CTRL_CTBIR0_OFFS 0x20
+#define PRU_CTRL_CTBIR1_OFFS 0x24
+#define PRU_CTRL_CPPR0_OFFS 0x28
+#define PRU_CTRL_CPPR1_OFFS 0x2c
+
+struct __PRU_CONTROL_S {
+ const volatile unsigned int SOFT_RST_N : 1;
+ volatile unsigned int ENABLE : 1;
+ volatile unsigned int SLEEPING : 1;
+ volatile unsigned int COUNTER_ENABLE : 1;
+ volatile unsigned int __reserved_1 : 4;
+ volatile unsigned int SINGLE_STEP : 1;
+ volatile unsigned int __reserved_2 : 5;
+ const volatile unsigned int __reserved_3 : 1;
+ const volatile unsigned int RUNSTATE : 1;
+ volatile unsigned int PCOUNTER_RST_VAL : 16;
+};
+
+struct __PRU_STATUS_S {
+ volatile unsigned int PCOUNTER : 16;
+ volatile unsigned int __reserved_1 : 16;
+};
+
+struct __PRU_CTBIR0_S {
+ volatile unsigned int C24_BLK_INDEX : 8;
+ volatile unsigned int __reserved_1 : 8;
+ volatile unsigned int C25_BLK_INDEX : 8;
+ volatile unsigned int __reserved_2 : 8;
+};
+
+struct __PRU_CTBIR1_S {
+ volatile unsigned int C26_BLK_INDEX : 8;
+ volatile unsigned int __reserved_1 : 8;
+ volatile unsigned int C27_BLK_INDEX : 8;
+ volatile unsigned int __reserved_2 : 8;
+};
+
+struct __PRU_CTPPR0_S {
+ volatile unsigned int C28_POINTER : 16;
+ volatile unsigned int C29_POINTER : 16;
+};
+
+struct __PRU_CTPPR1_S {
+ volatile unsigned int C30_POINTER : 16;
+ volatile unsigned int C31_POINTER : 16;
+};
+
+struct __PRU_CTRL {
+ union {
+ volatile unsigned int CONTROL;
+ struct __PRU_CONTROL_S CONTROL_bit;
+ };
+ union {
+ volatile unsigned int STATUS;
+ struct __PRU_STATUS_S STATUS_bit;
+ };
+ volatile unsigned int WAKEUP_EN;
+ volatile unsigned int CYCLE;
+ volatile unsigned int STALL;
+ volatile unsigned int __gap1[3];
+ union {
+ volatile unsigned int CTBIR0;
+ struct __PRU_CTBIR0_S CTBIR0_bit;
+ };
+ union {
+ volatile unsigned int CTBIR1;
+ struct __PRU_CTBIR1_S CTBIR1_bit;
+ };
+ union {
+ volatile unsigned int CTPPR0;
+ struct __PRU_CTPPR0_S CTPPR0_bit;
+ };
+ union {
+ volatile unsigned int CTPPR1;
+ struct __PRU_CTPPR1_S CTPPR1_bit;
+ };
+};
+
+#define PRU0_CTRL (*((struct __PRU_CTRL *)__PRU0_CTRL_REGS_BASE))
+#define PRU1_CTRL (*((struct __PRU_CTRL *)__PRU1_CTRL_REGS_BASE))
+
+#if defined(__AM335X_PRU0__)
+ #define PRU_CTRL PRU0_CTRL
+#elif defined(__AM335X_PRU1__)
+ #define PRU_CTRL PRU1_CTRL
+#else
+ #error "Unrecognized AM335x PRU core - check your -mmcu option"
+#endif
+
+
+
+/* ====================== PRU INTC module ====================== */
+#define PRU_INTC_REVID_OFFS 0x00
+#define PRU_INTC_CR_OFFS 0x04
+#define PRU_INTC_GER_OFFS 0x10
+#define PRU_INTC_GNLR_OFFS 0x1C
+#define PRU_INTC_SISR_OFFS 0x20
+#define PRU_INTC_SICR_OFFS 0x24
+#define PRU_INTC_EISR_OFFS 0x28
+#define PRU_INTC_EICR_OFFS 0x2c
+#define PRU_INTC_HIEISR_OFFS 0x34
+#define PRU_INTC_HIDISR_OFFS 0x38
+#define PRU_INTC_GPIR_OFFS 0x80
+#define PRU_INTC_SRSR0_OFFS 0x200
+#define PRU_INTC_SRSR1_OFFS 0x204
+#define PRU_INTC_SECR0_OFFS 0x280
+#define PRU_INTC_SECR1_OFFS 0x284
+#define PRU_INTC_ESR0_OFFS 0x300
+#define PRU_INTC_ESR1_OFFS 0x304
+#define PRU_INTC_ECR0_OFFS 0x380
+#define PRU_INTC_ECR1_OFFS 0x384
+#define PRU_INTC_CMR0_OFFS 0x400
+#define PRU_INTC_CMR1_OFFS 0x404
+#define PRU_INTC_CMR2_OFFS 0x408
+#define PRU_INTC_CMR3_OFFS 0x40c
+#define PRU_INTC_CMR4_OFFS 0x410
+#define PRU_INTC_CMR5_OFFS 0x414
+#define PRU_INTC_CMR6_OFFS 0x418
+#define PRU_INTC_CMR7_OFFS 0x41c
+#define PRU_INTC_CMR8_OFFS 0x420
+#define PRU_INTC_CMR9_OFFS 0x424
+#define PRU_INTC_CMR10_OFFS 0x428
+#define PRU_INTC_CMR11_OFFS 0x42c
+#define PRU_INTC_CMR12_OFFS 0x430
+#define PRU_INTC_CMR13_OFFS 0x434
+#define PRU_INTC_CMR14_OFFS 0x438
+#define PRU_INTC_CMR15_OFFS 0x43c
+#define PRU_INTC_HMR0_OFFS 0x800
+#define PRU_INTC_HMR1_OFFS 0x804
+#define PRU_INTC_HMR2_OFFS 0x808
+#define PRU_INTC_HIPIR0_OFFS 0x900
+#define PRU_INTC_HIPIR1_OFFS 0x904
+#define PRU_INTC_HIPIR2_OFFS 0x908
+#define PRU_INTC_HIPIR3_OFFS 0x90c
+#define PRU_INTC_HIPIR4_OFFS 0x910
+#define PRU_INTC_HIPIR5_OFFS 0x914
+#define PRU_INTC_HIPIR6_OFFS 0x918
+#define PRU_INTC_HIPIR7_OFFS 0x91c
+#define PRU_INTC_HIPIR8_OFFS 0x920
+#define PRU_INTC_HIPIR9_OFFS 0x924
+#define PRU_INTC_SIPR0_OFFS 0xd00
+#define PRU_INTC_SIPR1_OFFS 0xd04
+#define PRU_INTC_SITR0_OFFS 0xd80
+#define PRU_INTC_SITR1_OFFS 0xd84
+#define PRU_INTC_HINLR0_OFFS 0x1100
+#define PRU_INTC_HINLR1_OFFS 0x1104
+#define PRU_INTC_HINLR2_OFFS 0x1108
+#define PRU_INTC_HINLR3_OFFS 0x110c
+#define PRU_INTC_HINLR4_OFFS 0x1110
+#define PRU_INTC_HINLR5_OFFS 0x1114
+#define PRU_INTC_HINLR6_OFFS 0x1118
+#define PRU_INTC_HINLR7_OFFS 0x111c
+#define PRU_INTC_HINLR8_OFFS 0x1120
+#define PRU_INTC_HINLR9_OFFS 0x1124
+#define PRU_INTC_HIER_OFFS 0x1500
+
+
+struct __PRU_INTC_REVID_S {
+ const volatile unsigned int REV_MINOR : 6;
+ const volatile unsigned int REV_CUSTOM : 2;
+ const volatile unsigned int REV_MAJOR : 3;
+ const volatile unsigned int REV_RTL : 5;
+ const volatile unsigned int REV_MODULE : 12;
+ const volatile unsigned int __reserved_1 : 2;
+ const volatile unsigned int REV_SCHEME : 2;
+};
+
+
+struct __PRU_INTC_CR_S {
+ volatile unsigned int __reserved_1 : 2;
+ volatile unsigned int NEST_MODE : 2;
+ volatile unsigned int __reserved_2 : 28;
+};
+
+
+struct __PRU_INTC_GER_S {
+ volatile unsigned int ENABLE_HINT_ANY : 1;
+ volatile unsigned int __reserved_2 : 30;
+};
+
+
+struct __PRU_INTC_GNLR_S {
+ volatile unsigned int GLB_NEST_LEVEL : 9;
+ volatile unsigned int __reserved_1 : 22;
+ volatile unsigned int AUTO_OVERRIDE : 1;
+};
+
+
+struct __PRU_INTC_SISR_S {
+ volatile unsigned int STATUS_SET_INDEX : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+
+struct __PRU_INTC_SICR_S {
+ volatile unsigned int STATUS_CLR_INDEX : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+
+struct __PRU_INTC_EISR_S {
+ volatile unsigned int STATUS_SET_INDEX : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+
+struct __PRU_INTC_EICR_S {
+ volatile unsigned int STATUS_CLR_INDEX : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+
+struct __PRU_INTC_HIEISR_S {
+ volatile unsigned int HINT_ENABLE_SET_INDEX : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+
+struct __PRU_INTC_HIDISR_S {
+ volatile unsigned int HINT_ENABLE_CLR_INDEX : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+struct __PRU_INTC_GPIR_S {
+ volatile unsigned int GLB_PRI_INTR : 10;
+ volatile unsigned int __reserved_1 : 21;
+ volatile unsigned int GLB_NONE : 1;
+};
+
+
+
+struct __PRU_INTC_CMR_S {
+ volatile unsigned int CH_MAP : 4;
+ volatile unsigned int __reserved_1 : 4;
+} __attribute__((packed));
+
+
+struct __PRU_INTC_HMR_S {
+ volatile unsigned int HINT_MAP : 4;
+ volatile unsigned int __reserved_1 : 4;
+} __attribute__((packed));
+
+
+struct __PRU_INTC_HIPIR_S {
+ volatile unsigned int PRI_HINT : 10;
+ volatile unsigned int __reserved_1 : 21;
+ volatile unsigned int NONE_HINT : 1;
+};
+
+
+struct __PRU_INTC_HINLR_S {
+ volatile unsigned int AUTO_OVERRIDE : 10;
+ volatile unsigned int __reserved_1 : 21;
+ volatile unsigned int NEST_HINT : 1;
+};
+
+struct __PRU_INTC_HIER_S {
+ volatile unsigned int ENABLE_HINT : 10;
+ volatile unsigned int __reserved_1 : 22;
+};
+
+struct __PRU_INTC {
+ union {
+ const volatile unsigned int REVID;
+ struct __PRU_INTC_REVID_S REVID_bit;
+ };
+ union {
+ volatile unsigned int CR;
+ struct __PRU_INTC_CR_S CR_bit;
+ };
+ unsigned int __gap1[2];
+ union {
+ volatile unsigned int GER;
+ struct __PRU_INTC_GER_S GER_bit;
+ };
+ unsigned int __gap2[2];
+ union {
+ volatile unsigned int GNLR;
+ struct __PRU_INTC_GNLR_S GNLR_bit;
+ };
+ union {
+ volatile unsigned int SISR;
+ struct __PRU_INTC_SISR_S SISR_bit;
+ };
+ union {
+ volatile unsigned int SICR;
+ struct __PRU_INTC_SICR_S SICR_bit;
+ };
+ union {
+ volatile unsigned int EISR;
+ struct __PRU_INTC_EISR_S EISR_bit;
+ };
+ union {
+ volatile unsigned int EICR;
+ struct __PRU_INTC_EICR_S EICR_bit;
+ };
+ unsigned int __gap3[1];
+ union {
+ volatile unsigned int HIEISR;
+ struct __PRU_INTC_HIEISR_S HIEISR_bit;
+ };
+ union {
+ volatile unsigned int HIDISR;
+ struct __PRU_INTC_HIEISR_S HIDISR_bit;
+ };
+ unsigned int __gap4[17];
+ union {
+ volatile unsigned int GPIR;
+ struct __PRU_INTC_GPIR_S GPIR_bit;
+ };
+ unsigned int __gap5[95];
+ volatile unsigned int SPSR0;
+ volatile unsigned int SPSR1;
+ unsigned int __gap6[30];
+ volatile unsigned int SECR0;
+ volatile unsigned int SECR1;
+ unsigned int __gap7[30];
+ volatile unsigned int ESR0;
+ volatile unsigned int ESR1;
+ unsigned int __gap8[30];
+ volatile unsigned int ECR0;
+ volatile unsigned int ECR1;
+ unsigned int __gap9[30];
+ union {
+ volatile unsigned int CMR0;
+ struct __PRU_INTC_CMR_S CMR0_bit;
+ };
+ union {
+ volatile unsigned int CMR1;
+ struct __PRU_INTC_CMR_S CMR1_bit;
+ };
+ union {
+ volatile unsigned int CMR2;
+ struct __PRU_INTC_CMR_S CMR2_bit;
+ };
+ union {
+ volatile unsigned int CMR3;
+ struct __PRU_INTC_CMR_S CMR3_bit;
+ };
+ union {
+ volatile unsigned int CMR4;
+ struct __PRU_INTC_CMR_S CMR4_bit;
+ };
+ union {
+ volatile unsigned int CMR5;
+ struct __PRU_INTC_CMR_S CMR5_bit;
+ };
+ union {
+ volatile unsigned int CMR6;
+ struct __PRU_INTC_CMR_S CMR6_bit;
+ };
+ union {
+ volatile unsigned int CMR7;
+ struct __PRU_INTC_CMR_S CMR7_bit;
+ };
+ union {
+ volatile unsigned int CMR8;
+ struct __PRU_INTC_CMR_S CMR8_bit;
+ };
+ union {
+ volatile unsigned int CMR9;
+ struct __PRU_INTC_CMR_S CMR9_bit;
+ };
+ union {
+ volatile unsigned int CMR10;
+ struct __PRU_INTC_CMR_S CMR10_bit;
+ };
+ union {
+ volatile unsigned int CMR11;
+ struct __PRU_INTC_CMR_S CMR11_bit;
+ };
+ union {
+ volatile unsigned int CMR12;
+ struct __PRU_INTC_CMR_S CMR12_bit;
+ };
+ union {
+ volatile unsigned int CMR13;
+ struct __PRU_INTC_CMR_S CMR13_bit;
+ };
+ union {
+ volatile unsigned int CMR14;
+ struct __PRU_INTC_CMR_S CMR14_bit;
+ };
+ union {
+ volatile unsigned int CMR15;
+ struct __PRU_INTC_CMR_S CMR15_bit;
+ };
+ unsigned int __gap10[240];
+ union {
+ volatile unsigned int HMR0;
+ struct __PRU_INTC_HMR_S HMR0_bit;
+ };
+ union {
+ volatile unsigned int HMR1;
+ struct __PRU_INTC_HMR_S HMR1_bit;
+ };
+ union {
+ volatile unsigned int HMR2;
+ struct __PRU_INTC_HMR_S HMR2_bit;
+ };
+ unsigned int __gap11[61];
+ union {
+ volatile unsigned int HIPIR0;
+ struct __PRU_INTC_HIPIR_S HIPIR0_bit;
+ };
+ union {
+ volatile unsigned int HIPIR1;
+ struct __PRU_INTC_HIPIR_S HIPIR1_bit;
+ };
+ union {
+ volatile unsigned int HIPIR2;
+ struct __PRU_INTC_HIPIR_S HIPIR2_bit;
+ };
+ union {
+ volatile unsigned int HIPIR3;
+ struct __PRU_INTC_HIPIR_S HIPIR3_bit;
+ };
+ union {
+ volatile unsigned int HIPIR4;
+ struct __PRU_INTC_HIPIR_S HIPIR4_bit;
+ };
+ union {
+ volatile unsigned int HIPIR5;
+ struct __PRU_INTC_HIPIR_S HIPIR5_bit;
+ };
+ union {
+ volatile unsigned int HIPIR6;
+ struct __PRU_INTC_HIPIR_S HIPIR6_bit;
+ };
+ union {
+ volatile unsigned int HIPIR7;
+ struct __PRU_INTC_HIPIR_S HIPIR7_bit;
+ };
+ union {
+ volatile unsigned int HIPIR8;
+ struct __PRU_INTC_HIPIR_S HIPIR8_bit;
+ };
+ union {
+ volatile unsigned int HIPIR9;
+ struct __PRU_INTC_HIPIR_S HIPIR9_bit;
+ };
+ unsigned int __gap12[246];
+ volatile unsigned int SIPR0;
+ volatile unsigned int SIPR1;
+ unsigned int __gap13[30];
+ volatile unsigned int SITR0;
+ volatile unsigned int SITR1;
+ unsigned int __gap14[222];
+ union {
+ volatile unsigned int HINLR0;
+ struct __PRU_INTC_HINLR_S HINLR0_bit;
+ };
+ union {
+ volatile unsigned int HINLR1;
+ struct __PRU_INTC_HINLR_S HINLR1_bit;
+ };
+ union {
+ volatile unsigned int HINLR2;
+ struct __PRU_INTC_HINLR_S HINLR2_bit;
+ };
+ union {
+ volatile unsigned int HINLR3;
+ struct __PRU_INTC_HINLR_S HINLR3_bit;
+ };
+ union {
+ volatile unsigned int HINLR4;
+ struct __PRU_INTC_HINLR_S HINLR4_bit;
+ };
+ union {
+ volatile unsigned int HINLR5;
+ struct __PRU_INTC_HINLR_S HINLR5_bit;
+ };
+ union {
+ volatile unsigned int HINLR6;
+ struct __PRU_INTC_HINLR_S HINLR6_bit;
+ };
+ union {
+ volatile unsigned int HINLR7;
+ struct __PRU_INTC_HINLR_S HINLR7_bit;
+ };
+ union {
+ volatile unsigned int HINLR8;
+ struct __PRU_INTC_HINLR_S HINLR8_bit;
+ };
+ union {
+ volatile unsigned int HINLR9;
+ struct __PRU_INTC_HINLR_S HINLR9_bit;
+ };
+ unsigned int __gap15[246];
+ union {
+ volatile unsigned int HIER;
+ struct __PRU_INTC_HIER_S HIER_bit;
+ };
+};
+#define PRU_INTC (*((struct __PRU_INTC *)__INTC_BASE))
+
+/* ====================== PRU UART module ====================== */
+/* TODO */
+
+/* ====================== PRU eCAP module ====================== */
+/* TODO */
+
+/* ====================== PRU CFG module ====================== */
+#define PRU_CFG_REVID_OFFS 0x00
+#define PRU_CFG_SYSCFG_OFFS 0x04
+#define PRU_CFG_GPCFG0_OFFS 0x08
+#define PRU_CFG_GPCFG1_OFFS 0x0c
+#define PRU_CFG_CGR_OFFS 0x10
+#define PRU_CFG_ISRP_OFFS 0x14
+#define PRU_CFG_ISP_OFFS 0x18
+#define PRU_CFG_IESP_OFFS 0x1c
+#define PRU_CFG_IECP_OFFS 0x20
+#define PRU_CFG_SCRP_OFFS 0x24
+#define PRU_CFG_PMAO_OFFS 0x28
+#define PRU_CFG_MII_RT_OFFS 0x2c
+#define PRU_CFG_IEPCLK_OFFS 0x30
+#define PRU_CFG_SPP_OFFS 0x34
+#define PRU_CFG_PIN_MIX_OFFS 0x40
+
+struct __PRU_CFG_SYSCFG_S {
+ volatile unsigned int IDLE_MODE : 2;
+ volatile unsigned int STANDBY_MODE : 2;
+ volatile unsigned int STANDBY_INIT : 1;
+ const volatile unsigned int SUB_MWAIT : 1;
+ volatile unsigned int __reserved_1 : 24;
+};
+
+struct __PRU_CFG_GPCFG_S {
+ volatile unsigned int GPI_MODE : 2;
+ volatile unsigned int GPI_CLK_MODE : 1;
+ volatile unsigned int GPI_DIV0 : 5;
+ volatile unsigned int GPI_DIV1 : 5;
+ volatile unsigned int GPI_SB : 1;
+ volatile unsigned int GPO_MODE : 1;
+ volatile unsigned int GPO_DIV0 : 5;
+ volatile unsigned int GPO_DIV1 : 5;
+ volatile unsigned int GPO_SH_SEL : 1;
+ volatile unsigned int __reserved_1 : 6;
+};
+
+struct __PRU_CFG_CGR_S {
+ volatile unsigned int PRU0_CLK_STOP_REQ : 1;
+ const volatile unsigned int PRU0_CLK_STOP_ACK : 1;
+ volatile unsigned int PRU0_CLK_EN : 1;
+ volatile unsigned int PRU1_CLK_STOP_REQ : 1;
+ const volatile unsigned int PRU1_CLK_STOP_ACK : 1;
+ volatile unsigned int PRU1_CLK_EN : 1;
+ volatile unsigned int INTC_CLK_STOP_REQ : 1;
+ const volatile unsigned int INTC_CLK_STOP_ACK : 1;
+ volatile unsigned int INTC_CLK_EN : 1;
+ volatile unsigned int UART_CLK_STOP_REQ : 1;
+ const volatile unsigned int UART_CLK_STOP_ACK : 1;
+ volatile unsigned int UART_CLK_EN : 1;
+ volatile unsigned int ECAP_CLK_STOP_REQ : 1;
+ const volatile unsigned int ECAP_CLK_STOP_ACK : 1;
+ volatile unsigned int ECAP_CLK_EN : 1;
+ volatile unsigned int IEP_CLK_STOP_REQ : 1;
+ const volatile unsigned int IEP_CLK_STOP_ACK : 1;
+ volatile unsigned int IEP_CLK_EN : 1;
+ volatile unsigned int __reserved_1 : 14;
+};
+
+struct __PRU_CFG_ISPx_S {
+ volatile unsigned int PRU0_IMEM_PE : 4;
+ volatile unsigned int PRU0_DMEM_PE : 4;
+ volatile unsigned int PRU1_IMEM_PE : 4;
+ volatile unsigned int PRU1_DMEM_PE : 4;
+ volatile unsigned int RAM_PE : 4;
+ volatile unsigned int __reserved_1 : 12;
+};
+
+struct __PRU_CFG_SCRP_S {
+ volatile unsigned int SCRP_1 : 2;
+ volatile unsigned int SCRP_2 : 2;
+ volatile unsigned int SCRP_3 : 2;
+ volatile unsigned int SCRP_4 : 2;
+ volatile unsigned int SCRP_5 : 1;
+ volatile unsigned int SCRP_6 : 1;
+ volatile unsigned int SCRP_7 : 1;
+ volatile unsigned int SCRP_8 : 1;
+ volatile unsigned int SCRP_9 : 1;
+ volatile unsigned int SCRP_10 : 1;
+ volatile unsigned int SCRP_11 : 1;
+ volatile unsigned int SCRP_12 : 1;
+ volatile unsigned int SCRP_13 : 1;
+ volatile unsigned int SCRP_14 : 1;
+ volatile unsigned int SCRP_15 : 1;
+ volatile unsigned int SCRP_16 : 1;
+ volatile unsigned int SCRP_17 : 1;
+ volatile unsigned int SCRP_18 : 1;
+ volatile unsigned int __reserved_1 : 10;
+};
+
+struct __PRU_CFG_PMAO_S {
+ volatile unsigned int PMAO_PRU0 : 1;
+ volatile unsigned int PMAO_PRU1 : 1;
+ volatile unsigned int __reserved_1 : 30;
+};
+
+struct __PRU_CFG_MII_RT_S {
+ volatile unsigned int MII_RT_EVENT_EN : 1;
+ volatile unsigned int __reserved_1 : 31;
+};
+
+
+struct __PRU_CFG_IEPCLK_S {
+ volatile unsigned int OCP_EN : 1;
+ volatile unsigned int __reserved_1 : 31;
+};
+
+struct __PRU_CFG_SPP_S {
+ volatile unsigned int PRU1_PAD_HP_EN : 1;
+ volatile unsigned int XFR_SHIFT_EN : 1;
+ volatile unsigned int __reserved_1 : 30;
+};
+
+
+struct __PRU_CFG_PIN_MX_S {
+ volatile unsigned int PIN_MUX_SEL : 8;
+ volatile unsigned int __reserved_1 : 24;
+};
+
+struct __PRU_CFG {
+ volatile unsigned int REVID;
+ union {
+ volatile unsigned int SYSCFG;
+ struct __PRU_CFG_SYSCFG_S SYSCFG_bit;
+ };
+ union {
+ volatile unsigned int GPCFG0;
+ struct __PRU_CFG_GPCFG_S GPCFG0_bit;
+#if defined(__AM335X_PRU0__)
+ volatile unsigned int GPCFG;
+ struct __PRU_CFG_GPCFG_S GPCFG_bit;
+#endif
+ };
+ union {
+ volatile unsigned int GPCFG1;
+ struct __PRU_CFG_GPCFG_S GPCFG1_bit;
+#if defined(__AM335X_PRU1__)
+ volatile unsigned int GPCFG;
+ struct __PRU_CFG_GPCFG_S GPCFG_bit;
+#endif
+ };
+ union {
+ volatile unsigned int CGR;
+ struct __PRU_CFG_CGR_S CGR_bit;
+ };
+ union {
+ volatile unsigned int ISRP;
+ struct __PRU_CFG_ISPx_S ISRP_bit;
+ };
+ union {
+ volatile unsigned int ISP;
+ struct __PRU_CFG_ISPx_S ISP_bit;
+ };
+ union {
+ volatile unsigned int IESP;
+ struct __PRU_CFG_ISPx_S IESP_bit;
+ };
+ union {
+ volatile unsigned int IECP;
+ struct __PRU_CFG_ISPx_S IECP_bit;
+ };
+ union {
+ volatile unsigned int SCRP;
+ struct __PRU_CFG_SCRP_S SCRP_bit;
+ };
+ union {
+ volatile unsigned int PMAO;
+ struct __PRU_CFG_PMAO_S PMAO_bit;
+ };
+ union {
+ volatile unsigned int MII_RT;
+ struct __PRU_CFG_MII_RT_S MII_RT_bit;
+ };
+ union {
+ volatile unsigned int IEPCLK;
+ struct __PRU_CFG_IEPCLK_S IEPCLK_bit;
+ };
+ union {
+ volatile unsigned int SPP;
+ struct __PRU_CFG_SPP_S SPP_bit;
+ };
+ volatile unsigned int __gap1[2];
+ union {
+ volatile unsigned int PIN_MX;
+ struct __PRU_CFG_PIN_MX_S PIN_MX_bit;
+ };
+};
+#define PRU_CFG (*((struct __PRU_CFG *)__CFG_BASE))
+
+
+#endif
diff --git a/libgloss/pru/include/pru/io.h b/libgloss/pru/include/pru/io.h
new file mode 100644
index 000000000..b8a70aa78
--- /dev/null
+++ b/libgloss/pru/include/pru/io.h
@@ -0,0 +1,124 @@
+/* pru/io.h -- PRU I/O registers definitions
+
+ Copyright (c) 2015-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following condition
+ is met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ 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 HOLDER 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.
+ */
+
+#ifndef __PRU_IO_H__
+#define __PRU_IO_H__
+
+
+static inline void write_r30(unsigned int val)
+{
+ asm volatile ("mov\tr30, %0" : : "r"(val));
+}
+
+static inline unsigned int read_r30(void)
+{
+ unsigned int val;
+ asm volatile ("mov\t%0, r30" : "=r"(val) :);
+ return val;
+}
+
+static inline void write_r31(unsigned int val)
+{
+ asm volatile ("mov\tr31, %0" : : "r"(val));
+}
+
+static inline unsigned int read_r31(void)
+{
+ unsigned int val;
+ asm volatile ("mov\t%0, r31" : "=r"(val) :);
+ return val;
+}
+
+#ifdef __cplusplus
+
+/*
+ * Elegant accessors for C++ users. Use __R30 and __R31 as normal
+ * LHS and RHS variables to respectively read and write to R30/R31.
+ */
+class __R30_type {
+public:
+ void operator= (unsigned int rhs) const {
+ write_r30(rhs);
+ }
+ operator unsigned int() const {
+ return read_r30();
+ }
+};
+
+class __R31_type {
+public:
+ void operator= (unsigned int rhs) const {
+ write_r31(rhs);
+ }
+ operator unsigned int() const {
+ return read_r31();
+ }
+};
+
+__R30_type __R30 __attribute__((weak));
+__R31_type __R31 __attribute__((weak));
+
+#endif /* __cplusplus */
+
+static inline void __halt(void)
+{
+ asm volatile ("halt" : : : "memory");
+}
+
+#define PRU_R31_INTR_IN1_BIT 31
+#define PRU_R31_INTR_IN1_MASK (1u << 31)
+#define PRU_R31_INTR_IN0_BIT 30
+#define PRU_R31_INTR_IN0_MASK (1u << 30)
+
+#define PRU_R31_STATUS_BIT 0
+#define PRU_R31_STATUS_MASK (0x3fffffffu << 0)
+
+#define PRU_R31_VEC_VALID_BIT 5
+#define PRU_R31_VEC_VALID_MASK (1u << 5)
+#define PRU_R31_VEC_BIT 0
+#define PRU_R31_VEC_MASK (0xfu << 0)
+
+#define PRU_R25_ACC_CARRY_BIT 1
+#define PRU_R25_ACC_CARRY_MASK (1u << 1)
+#define PRU_R25_MAC_EN_BIT 0
+#define PRU_R25_MAC_EN_MASK (1u << 0)
+
+/* XFR Device ID numbers */
+#define XFR_ID_MAC 0
+#define XFR_ID_BANK0 10
+#define XFR_ID_BANK1 11
+#define XFR_ID_BANK2 12
+#define XFR_ID_PEER_CORE 14
+
+#if defined(__AM335X_PRU0__) || defined(__AM335X_PRU1__)
+# include <pru/am335x.h>
+#elif defined(__SIM__)
+ /* perhaps warn? */
+#else
+# warning "No matching PRU instance variant found for <pru/io.h>"
+#endif
+
+#endif
diff --git a/libgloss/pru/isatty.c b/libgloss/pru/isatty.c
new file mode 100644
index 000000000..bb160edf2
--- /dev/null
+++ b/libgloss/pru/isatty.c
@@ -0,0 +1,26 @@
+/* isatty.c -- chek the terminal device.
+ *
+ * Copyright (c) 1995 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+/*
+ * isatty -- returns 1 if connected to a terminal device,
+ * returns 0 if not. Since we're hooked up to a
+ * serial port, we'll say yes _AND return a 1.
+ */
+int
+_isatty (int fd)
+{
+ return (1);
+}
diff --git a/libgloss/pru/kill.c b/libgloss/pru/kill.c
new file mode 100644
index 000000000..5bf7c4110
--- /dev/null
+++ b/libgloss/pru/kill.c
@@ -0,0 +1,28 @@
+/* kill.c -- remove a process.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+extern void _exit (int) __attribute__((__noreturn__));
+
+/*
+ * kill -- go out via exit...
+ */
+int
+_kill (int pid, int sig)
+{
+ if(pid == __MYPID)
+ _exit(sig);
+ return 0;
+}
diff --git a/libgloss/pru/ldscripts/gen-ld-scripts.sh b/libgloss/pru/ldscripts/gen-ld-scripts.sh
new file mode 100755
index 000000000..575a30970
--- /dev/null
+++ b/libgloss/pru/ldscripts/gen-ld-scripts.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+# Generate additional MCU-specific linker scripts by using the
+# default PRU-LD linker script.
+#
+# We do it automatically so that:
+# 1. We only change the default linker script in binutils.
+# 2. All the default script complexity stays in binutils.
+# 3. Here in libgloss we care only to enumerate all PRU variants with
+# their default memory sizes.
+
+dump_modified()
+{
+ IMEM_SIZE=$1
+ DMEM_SIZE=$2
+ HEAP_SIZE=$3
+ STACK_SIZE=$4
+
+ echo "/* WARNING: automatically generated from the default pru-ld script! */"
+ echo -e "\n\n"
+ pru-ld --verbose | awk "
+BEGIN { LDV_MARKER = 0; }
+{
+ if (\$0 == \"==================================================\" )
+ {
+ LDV_MARKER++;
+ }
+ else if (LDV_MARKER != 1)
+ {
+ }
+ else if (\$0 ~ /^ imem.*ORIGIN =.*LENGTH =/)
+ {
+ print \" imem (x) : ORIGIN = 0x20000000, LENGTH = $IMEM_SIZE\"
+ }
+ else if (\$0 ~ /^ dmem.*ORIGIN =.*LENGTH =/)
+ {
+ print \" dmem (rw!x) : ORIGIN = 0x0, LENGTH = $DMEM_SIZE\"
+ }
+ else if (\$0 ~ /^__HEAP_SIZE = DEFINED/)
+ {
+ print \"__HEAP_SIZE = DEFINED(__HEAP_SIZE) ? __HEAP_SIZE : $HEAP_SIZE ;\";
+ }
+ else if (\$0 ~ /^__STACK_SIZE = DEFINED/)
+ {
+ print \"__STACK_SIZE = DEFINED(__STACK_SIZE) ? __STACK_SIZE : $STACK_SIZE ;\";
+ }
+ else
+ {
+ print \$0;
+ }
+}"
+}
+
+# IMEM DMEM HEAP_SIZE STACK_SIZE
+dump_modified 256K 65536K "32 * 1024 * 1024" "1024 * 1024" | tee pruelf-sim.x
+dump_modified 8K 8K "32" "512" | tee pruelf-am335x.pru0.x
+dump_modified 8K 8K "32" "512" | tee pruelf-am335x.pru1.x
+dump_modified 4K 4K "32" "256" | tee pruelf-am437x.icss0.pru0.x
+dump_modified 4K 4K "32" "256" | tee pruelf-am437x.icss0.pru1.x
+dump_modified 8K 8K "32" "512" | tee pruelf-am437x.icss1.pru0.x
+dump_modified 8K 8K "32" "512" | tee pruelf-am437x.icss1.pru1.x
diff --git a/libgloss/pru/ldscripts/pruelf-am335x.pru0.x b/libgloss/pru/ldscripts/pruelf-am335x.pru0.x
new file mode 100644
index 000000000..feae65881
--- /dev/null
+++ b/libgloss/pru/ldscripts/pruelf-am335x.pru0.x
@@ -0,0 +1,201 @@
+/* WARNING: automatically generated from the default pru-ld script! */
+
+
+
+/* Default linker script, for normal executables */
+OUTPUT_FORMAT("elf32-pru","elf32-pru","elf32-pru")
+OUTPUT_ARCH(pru)
+MEMORY
+{
+ imem (x) : ORIGIN = 0x20000000, LENGTH = 8K
+ dmem (rw!x) : ORIGIN = 0x0, LENGTH = 8K
+}
+__HEAP_SIZE = DEFINED(__HEAP_SIZE) ? __HEAP_SIZE : 32 ;
+__STACK_SIZE = DEFINED(__STACK_SIZE) ? __STACK_SIZE : 512 ;
+ PROVIDE (_stack_top = ORIGIN(dmem) + LENGTH(dmem)) ;
+ENTRY (_start)
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ .hash : { *(.hash) }
+ .dynsym : { *(.dynsym) }
+ .dynstr : { *(.dynstr) }
+ .gnu.version : { *(.gnu.version) }
+ .gnu.version_d : { *(.gnu.version_d) }
+ .gnu.version_r : { *(.gnu.version_r) }
+ .rel.init : { *(.rel.init) }
+ .rela.init : { *(.rela.init) }
+ .rel.text :
+ {
+ *(.rel.text)
+ *(.rel.text.*)
+ *(.rel.text:*)
+ *(.rel.gnu.linkonce.t*)
+ }
+ .rela.text :
+ {
+ *(.rela.text)
+ *(.rela.text.*)
+ *(.rela.text:*)
+ *(.rela.gnu.linkonce.t*)
+ }
+ .rel.fini : { *(.rel.fini) }
+ .rela.fini : { *(.rela.fini) }
+ .rel.rodata :
+ {
+ *(.rel.rodata)
+ *(.rel.rodata.*)
+ *(.rel.rodata:*)
+ *(.rel.gnu.linkonce.r*)
+ }
+ .rela.rodata :
+ {
+ *(.rela.rodata)
+ *(.rela.rodata.*)
+ *(.rela.rodata:*)
+ *(.rela.gnu.linkonce.r*)
+ }
+ .rel.data :
+ {
+ *(.rel.data)
+ *(.rel.data.*)
+ *(.rel.data:*)
+ *(.rel.gnu.linkonce.d*)
+ }
+ .rela.data :
+ {
+ *(.rela.data)
+ *(.rela.data.*)
+ *(.rela.data:*)
+ *(.rela.gnu.linkonce.d*)
+ }
+ .rel.init_array : { *(.rel.init_array) }
+ .rela.init_array : { *(.rela.init_array) }
+ .rel.fini_array : { *(.rel.fini_array) }
+ .rela.fini_array : { *(.rela.fini_array) }
+ .rel.got : { *(.rel.got) }
+ .rela.got : { *(.rela.got) }
+ .rel.bss : { *(.rel.bss) }
+ .rela.bss : { *(.rela.bss) }
+ .rel.plt : { *(.rel.plt) }
+ .rela.plt : { *(.rela.plt) }
+ /* Internal text space. */
+ .text :
+ {
+ _text_start = . ;
+ . = ALIGN(4);
+ *(.init0) /* Start here after reset. */
+ KEEP (*(.init0))
+ . = ALIGN(4);
+ *(.text)
+ . = ALIGN(4);
+ *(.text.*)
+ . = ALIGN(4);
+ *(.text:*)
+ . = ALIGN(4);
+ *(.gnu.linkonce.t*)
+ . = ALIGN(4);
+ _text_end = . ;
+ } > imem
+ .data :
+ {
+ /* Optional variable that user is prepared to have NULL address. */
+ *(.data.atzero*)
+ /* CRT is prepared for constructor/destructor table to have
+ a "valid" NULL address. */
+ __init_array_begin = . ;
+ KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*)))
+ KEEP (*(.init_array))
+ __init_array_end = . ;
+ __fini_array_begin = . ;
+ KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*)))
+ KEEP (*(.fini_array))
+ __fini_array_end = . ;
+ /* DATA memory starts at address 0. So to avoid placing a valid static
+ variable at the invalid NULL address, we introduce the .data.atzero
+ section. If CRT can make some use of it - great. Otherwise skip a
+ word. In all cases .data/.bss sections must start at non-zero. */
+ . += (. == 0 ? 4 : 0);
+ PROVIDE (_data_start = .) ;
+ *(.data)
+ *(.data*)
+ *(.data:*)
+ *(.rodata) /* We need to include .rodata here if gcc is used. */
+ *(.rodata.*) /* with -fdata-sections. */
+ *(.rodata:*)
+ *(.gnu.linkonce.d*)
+ *(.gnu.linkonce.r*)
+ . = ALIGN(4);
+ PROVIDE (_data_end = .) ;
+ } > dmem
+ .resource_table :
+ {
+ *(.resource_table)
+ KEEP (*(.resource_table))
+ } > dmem
+ .bss :
+ {
+ PROVIDE (_bss_start = .) ;
+ *(.bss)
+ *(.bss.*)
+ *(.bss:*)
+ *(.gnu.linkonce.b*)
+ *(COMMON)
+ PROVIDE (_bss_end = .) ;
+ } > dmem
+ /* Global data not cleared after reset. */
+ .noinit :
+ {
+ PROVIDE (_noinit_start = .) ;
+ *(.noinit)
+ PROVIDE (_noinit_end = .) ;
+ PROVIDE (_heap_start = .) ;
+ . += __HEAP_SIZE ;
+ /* Stack is not here really. It will be put at the end of DMEM.
+ But we take into account its size here, in order to allow
+ for MEMORY overflow checking during link time. */
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new file mode 100644
index 000000000..feae65881
--- /dev/null
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new file mode 100644
index 000000000..42489f623
--- /dev/null
+++ b/libgloss/pru/ldscripts/pruelf-am437x.icss0.pru0.x
@@ -0,0 +1,201 @@
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diff --git a/libgloss/pru/ldscripts/pruelf-am437x.icss0.pru1.x b/libgloss/pru/ldscripts/pruelf-am437x.icss0.pru1.x
new file mode 100644
index 000000000..42489f623
--- /dev/null
+++ b/libgloss/pru/ldscripts/pruelf-am437x.icss0.pru1.x
@@ -0,0 +1,201 @@
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new file mode 100644
index 000000000..feae65881
--- /dev/null
+++ b/libgloss/pru/ldscripts/pruelf-am437x.icss1.pru0.x
@@ -0,0 +1,201 @@
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diff --git a/libgloss/pru/ldscripts/pruelf-am437x.icss1.pru1.x b/libgloss/pru/ldscripts/pruelf-am437x.icss1.pru1.x
new file mode 100644
index 000000000..feae65881
--- /dev/null
+++ b/libgloss/pru/ldscripts/pruelf-am437x.icss1.pru1.x
@@ -0,0 +1,201 @@
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new file mode 100644
index 000000000..c7d0c59c5
--- /dev/null
+++ b/libgloss/pru/ldscripts/pruelf-sim.x
@@ -0,0 +1,201 @@
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+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end ) }
+ .debug_frame 0 : { *(.debug_frame) }
+ .debug_str 0 : { *(.debug_str) }
+ .debug_loc 0 : { *(.debug_loc) }
+ .debug_macinfo 0 : { *(.debug_macinfo) }
+ /* SGI/MIPS DWARF 2 extensions */
+ .debug_weaknames 0 : { *(.debug_weaknames) }
+ .debug_funcnames 0 : { *(.debug_funcnames) }
+ .debug_typenames 0 : { *(.debug_typenames) }
+ .debug_varnames 0 : { *(.debug_varnames) }
+ /* DWARF 3 */
+ .debug_pubtypes 0 : { *(.debug_pubtypes) }
+ .debug_ranges 0 : { *(.debug_ranges) }
+ /* DWARF Extension. */
+ .debug_macro 0 : { *(.debug_macro) }
+ .debug_addr 0 : { *(.debug_addr) }
+}
+
+
diff --git a/libgloss/pru/lseek.c b/libgloss/pru/lseek.c
new file mode 100644
index 000000000..966b2b8a3
--- /dev/null
+++ b/libgloss/pru/lseek.c
@@ -0,0 +1,31 @@
+/* lseek.c -- move read/write pointer.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <sys/types.h>
+#include <errno.h>
+#include "glue.h"
+
+#undef errno
+extern int errno;
+
+/*
+ * lseek -- we return an error.
+ */
+off_t
+_lseek (int fd, off_t offset, int whence)
+{
+ errno = ESPIPE;
+ return ((off_t)-1);
+}
+
diff --git a/libgloss/pru/open.c b/libgloss/pru/open.c
new file mode 100644
index 000000000..7140eefc4
--- /dev/null
+++ b/libgloss/pru/open.c
@@ -0,0 +1,30 @@
+/* open.c -- open a file.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <errno.h>
+#include "glue.h"
+
+#undef errno
+extern int errno;
+
+/*
+ * open -- open a file descriptor. We don't have a filesystem, so
+ * we return an error.
+ */
+int
+_open (const char *buf, int flags, int mode)
+{
+ errno = EIO;
+ return (-1);
+}
diff --git a/libgloss/pru/outbyte.c b/libgloss/pru/outbyte.c
new file mode 100644
index 000000000..13e4277ea
--- /dev/null
+++ b/libgloss/pru/outbyte.c
@@ -0,0 +1,24 @@
+/* outbyte.c -- outbyte function for simulator
+ *
+ * Copyright (c) 2014-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <unistd.h>
+#include <_ansi.h>
+
+extern ssize_t _write(int fd, const void *b, size_t count);
+
+void
+outbyte (char ch)
+{
+ _write(STDOUT_FILENO, &ch, 1);
+}
diff --git a/libgloss/pru/print.c b/libgloss/pru/print.c
new file mode 100644
index 000000000..00a40b387
--- /dev/null
+++ b/libgloss/pru/print.c
@@ -0,0 +1,25 @@
+/* print.c -- print a string on the output device.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <unistd.h>
+#include "glue.h"
+
+/*
+ * print -- do a raw print of a string
+ */
+void
+_print (char *ptr)
+{
+ _write(STDOUT_FILENO, ptr, strlen(ptr));
+}
diff --git a/libgloss/pru/putnum.c b/libgloss/pru/putnum.c
new file mode 100644
index 000000000..127e1c3dd
--- /dev/null
+++ b/libgloss/pru/putnum.c
@@ -0,0 +1,42 @@
+/* putnum.c -- put a hex number on the output device.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+extern void print (char *ptr);
+
+/*
+ * putnum -- print a 32 bit number in hex
+ */
+void
+_putnum (unsigned int num)
+{
+ char buf[9];
+ int cnt;
+ char *ptr;
+ int digit;
+
+ ptr = buf;
+ for (cnt = 7 ; cnt >= 0 ; cnt--) {
+ digit = (num >> (cnt * 4)) & 0xf;
+
+ if (digit <= 9)
+ *ptr++ = (char) ('0' + digit);
+ else
+ *ptr++ = (char) ('a' - 10 + digit);
+ }
+
+ *ptr = (char) 0;
+ print (buf);
+}
diff --git a/libgloss/pru/raise.c b/libgloss/pru/raise.c
new file mode 100644
index 000000000..d8e902605
--- /dev/null
+++ b/libgloss/pru/raise.c
@@ -0,0 +1,24 @@
+/* raise.c -- raise a signal for current process.
+ *
+ * Copyright (c) 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "glue.h"
+
+extern int _kill (int, int);
+extern int _getpid(void);
+
+int
+_raise (int sig)
+{
+ return _kill (_getpid (), sig);
+}
diff --git a/libgloss/pru/sbrk.c b/libgloss/pru/sbrk.c
new file mode 100644
index 000000000..f14e4ec34
--- /dev/null
+++ b/libgloss/pru/sbrk.c
@@ -0,0 +1,46 @@
+/* sbrk.c -- allocate memory dynamically.
+ *
+ * Copyright (c) 1995,1996,1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "glue.h"
+
+extern char _heap_start[];
+extern void exit (int) __attribute ((__noreturn__));
+extern int _write (int, char *, int);
+
+caddr_t
+_sbrk (size_t incr)
+{
+ static char *heap_end;
+ char *prev_heap_end;
+ char *sp = (char *)&sp;
+
+ if (heap_end == 0)
+ {
+ heap_end = _heap_start;
+ }
+ prev_heap_end = heap_end;
+ if (heap_end > sp)
+ {
+ _write (1, "Heap and stack collision\n", 25);
+#if 0 /* Calling abort brings in the signal handling code. */
+ abort ();
+#else
+ exit (1);
+#endif
+ }
+ heap_end += incr;
+ return (caddr_t) prev_heap_end;
+}
diff --git a/libgloss/pru/stat.c b/libgloss/pru/stat.c
new file mode 100644
index 000000000..64cb27253
--- /dev/null
+++ b/libgloss/pru/stat.c
@@ -0,0 +1,31 @@
+/* stat.c -- Get the status of a file.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <sys/stat.h>
+#include <errno.h>
+#include "glue.h"
+
+#undef errno
+extern int errno;
+
+/*
+ * stat -- Since we have no file system, we just return an error.
+ */
+int
+_stat (const char *path, struct stat *buf)
+{
+ errno = EIO;
+ return (-1);
+}
+
diff --git a/libgloss/pru/syscalls.S b/libgloss/pru/syscalls.S
new file mode 100644
index 000000000..eb074690a
--- /dev/null
+++ b/libgloss/pru/syscalls.S
@@ -0,0 +1,32 @@
+/* syscalls.S -- PRU system calls code
+ *
+ * Copyright (c) 2014-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include "newlib.h"
+
+#include "syscall.h"
+
+.macro SC fname, id
+ .global \fname
+ .type \fname,@function
+\fname:
+ ldi r1, \id
+ halt
+ ret
+.endm
+
+ .text
+
+ SC _exit, SYS_exit
+ SC _write, SYS_write
+ SC _read, SYS_read
diff --git a/libgloss/pru/unlink.c b/libgloss/pru/unlink.c
new file mode 100644
index 000000000..a5e490404
--- /dev/null
+++ b/libgloss/pru/unlink.c
@@ -0,0 +1,30 @@
+/* unlink.c -- remove a file.
+ *
+ * Copyright (c) 1995, 1999 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+#include <errno.h>
+#include "glue.h"
+
+#undef errno
+extern int errno;
+
+/*
+ * unlink -- since we have no file system,
+ * we just return an error.
+ */
+int
+_unlink (char * path)
+{
+ errno = EIO;
+ return (-1);
+}
diff --git a/newlib/configure.host b/newlib/configure.host
index 4eebf6d95..10115c613 100644
--- a/newlib/configure.host
+++ b/newlib/configure.host
@@ -82,7 +82,7 @@ case "${target_optspace}:${host}" in
yes:*)
newlib_cflags="${newlib_cflags} -Os"
;;
- :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* | :msp430*-* | :nds32* | :rl78-* )
+ :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* | :msp430*-* | :nds32* | :pru-* | :rl78-* )
newlib_cflags="${newlib_cflags} -Os"
;;
no:* | :*)
@@ -261,6 +261,14 @@ case "${host_cpu}" in
powerpc*)
machine_dir=powerpc
;;
+ pru*)
+ newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"
+ newlib_cflags="${newlib_cflags} -DNO_EXEC"
+ newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
+ default_newlib_nano_malloc="yes"
+ default_newlib_atexit_dynamic_alloc="no"
+ machine_dir=pru
+ ;;
riscv*)
libm_machine_dir=riscv
machine_dir=riscv
@@ -817,6 +825,10 @@ newlib_cflags="${newlib_cflags} -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DEXIT_PROVID
newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL -D_NO_POSIX_SPAWN"
syscall_dir=syscalls
;;
+ pru*)
+ syscall_dir=syscalls
+ newlib_cflags="${newlib_cflags} -DSMALL_MEMORY -D_REENT_SMALL"
+ ;;
riscv*-*-*)
syscall_dir=syscalls
;;
diff --git a/newlib/libc/include/machine/ieeefp.h b/newlib/libc/include/machine/ieeefp.h
index 2fb2268ce..a81a85cee 100644
--- a/newlib/libc/include/machine/ieeefp.h
+++ b/newlib/libc/include/machine/ieeefp.h
@@ -409,6 +409,10 @@
#define __SMALL_BITFIELDS /* 16 Bit INT */
#endif
+#ifdef __PRU__
+#define __IEEE_LITTLE_ENDIAN
+#endif
+
#ifdef __RL78__
#define __IEEE_LITTLE_ENDIAN
#define __SMALL_BITFIELDS /* 16 Bit INT */
diff --git a/newlib/libc/include/machine/setjmp.h b/newlib/libc/include/machine/setjmp.h
index 9212f840b..a3b33e372 100644
--- a/newlib/libc/include/machine/setjmp.h
+++ b/newlib/libc/include/machine/setjmp.h
@@ -349,6 +349,11 @@ _BEGIN_STD_C
#define _JBTYPE unsigned long
#endif
+#ifdef __PRU__
+#define _JBLEN 48
+#define _JBTYPE unsigned int
+#endif
+
#ifdef __RX__
#define _JBLEN 0x44
#endif
diff --git a/newlib/libc/machine/configure.in b/newlib/libc/machine/configure.in
index 8ebe68bdb..88e728b02 100644
--- a/newlib/libc/machine/configure.in
+++ b/newlib/libc/machine/configure.in
@@ -64,6 +64,7 @@ if test -n "${machine_dir}"; then
nvptx) AC_CONFIG_SUBDIRS(nvptx) ;;
or1k) AC_CONFIG_SUBDIRS(or1k) ;;
powerpc) AC_CONFIG_SUBDIRS(powerpc) ;;
+ pru) AC_CONFIG_SUBDIRS(pru) ;;
rl78) AC_CONFIG_SUBDIRS(rl78) ;;
rx) AC_CONFIG_SUBDIRS(rx) ;;
sh) AC_CONFIG_SUBDIRS(sh) ;;
diff --git a/newlib/libc/machine/pru/Makefile.am b/newlib/libc/machine/pru/Makefile.am
new file mode 100644
index 000000000..60885128d
--- /dev/null
+++ b/newlib/libc/machine/pru/Makefile.am
@@ -0,0 +1,16 @@
+## Process this file with automake to generate Makefile.in
+
+AUTOMAKE_OPTIONS = cygnus
+
+INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
+
+AM_CCASFLAGS = $(INCLUDES)
+
+noinst_LIBRARIES = lib.a
+
+lib_a_SOURCES = setjmp.s
+lib_a_CCASFLAGS=$(AM_CCASFLAGS)
+lib_a_CFLAGS=$(AM_CFLAGS)
+
+ACLOCAL_AMFLAGS = -I ../../.. -I ../../../..
+CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host
diff --git a/newlib/libc/machine/pru/configure.in b/newlib/libc/machine/pru/configure.in
new file mode 100644
index 000000000..d6eea0e9c
--- /dev/null
+++ b/newlib/libc/machine/pru/configure.in
@@ -0,0 +1,14 @@
+dnl This is the newlib/libc/machine/pru configure.in file.
+dnl Process this file with autoconf to produce a configure script.
+
+AC_PREREQ(2.59)
+AC_INIT([newlib],[NEWLIB_VERSION])
+AC_CONFIG_SRCDIR([setjmp.s])
+
+dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake.
+AC_CONFIG_AUX_DIR(../../../..)
+
+NEWLIB_CONFIGURE(../../..)
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
diff --git a/newlib/libc/machine/pru/setjmp.s b/newlib/libc/machine/pru/setjmp.s
new file mode 100644
index 000000000..f13f66b65
--- /dev/null
+++ b/newlib/libc/machine/pru/setjmp.s
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2014-2018 Dimitar Dimitrov <dimitar@dinux.eu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. 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.
+ *
+ * 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 HOLDER 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.
+ */
+ .section .text
+ .align 3
+ .globl setjmp
+ .type setjmp,@function
+ .globl longjmp
+ .type longjmp,@function
+
+
+setjmp:
+ sbbo r2, r14, 0, 4*12 /* SP, RA, FP, r5-r13 */
+ ldi r14, 0
+ ret
+
+longjmp:
+ lbbo r2, r14, 0, 4*12 /* SP, RA, FP, r5-r13 */
+ mov r14, r15 /* copy second arg to return location */
+ qbne 1f, r14, 0 /* per stdC, we cannot return 0 */
+ ldi r14, 1
+1:
+ ret
--
2.11.0