New port of RTEMS to TI C3x and C4x.

4 files changed, 276 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/c4x/c4xsim/startup/Makefile.am b/c/src/lib/libbsp/c4x/c4xsim/startup/Makefile.am
new file mode 100644
index 0000000000..e8319e2af0
--- /dev/null
+++ b/c/src/lib/libbsp/c4x/c4xsim/startup/Makefile.am
@@ -0,0 +1,43 @@
+## 
+## $Id$
+## 
+
+AUTOMAKE_OPTIONS = foreign 1.4
+
+VPATH = @srcdir@:@srcdir@/../../shared:@srcdir@/../../../shared
+
+PGM = $(ARCH)/startup.rel
+
+C_FILES = bspclean.c bsplibc.c bsppost.c bspstart.c main.c bootcard.c sbrk.c \
+    setvec.c c3xspurious.c c4xspurious.c bspspuriousinit.c spurious.c \
+    gnatinstallhandler.c
+C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o)
+
+OBJS = $(C_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(top_srcdir)/../../../../../../automake/lib.am
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+# USE_INIT_FINI tells main.c what C++ help we need.
+
+# AM_CPPFLAGS += -DUSE_INIT_FINI
+
+$(PGM): $(OBJS)
+	$(make-rel)
+
+$(PROJECT_RELEASE)/lib/linkcmds: linkcmds
+	$(INSTALL_DATA) $< $@
+
+TMPINSTALL_FILES += $(PROJECT_RELEASE)/lib/linkcmds
+
+all-local: $(ARCH) $(OBJS) $(PGM) $(TMPINSTALL_FILES)
+
+.PRECIOUS: $(PGM)
+
+EXTRA_DIST = bspclean.c bspstart.c linkcmds setvec.c spurious.c
+
+include $(top_srcdir)/../../../../../../automake/local.am
diff --git a/c/src/lib/libbsp/c4x/c4xsim/startup/bspstart.c b/c/src/lib/libbsp/c4x/c4xsim/startup/bspstart.c
new file mode 100644
index 0000000000..34adabdc48
--- /dev/null
+++ b/c/src/lib/libbsp/c4x/c4xsim/startup/bspstart.c
@@ -0,0 +1,124 @@
+/*
+ *  This set of routines starts the application.  It includes application,
+ *  board, and monitor specific initialization and configuration.
+ *  The generic CPU dependent initialization has been performed
+ *  before any of these are invoked.
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <rtems/libio.h>
+
+#include <libcsupport.h>
+
+#include <string.h>
+
+/*
+ *  The original table from the application and our copy of it with
+ *  some changes.
+ */
+ 
+extern rtems_configuration_table  Configuration;
+rtems_configuration_table         BSP_Configuration;
+
+rtems_cpu_table   Cpu_table;
+
+/*
+ *  Use the shared implementations of the following routines
+ */
+ 
+void bsp_postdriver_hook(void);
+void bsp_libc_init( void *, unsigned32, int );
+extern void bsp_spurious_initialize();
+
+/*
+ *  bsp_pretasking_hook
+ *
+ *  BSP pretasking hook.  Called just before drivers are initialized.
+ *  Used to setup libc and install any BSP extensions.
+ */
+
+void bsp_pretasking_hook(void)
+{
+  extern void *_HeapStart;
+  extern rtems_unsigned32 _HeapSize;
+
+  bsp_libc_init(&_HeapStart, (unsigned int) &_HeapSize, 0);
+
+#ifdef RTEMS_DEBUG
+  rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
+#endif
+
+  bsp_spurious_initialize();
+}
+
+/*
+ *  bsp_start
+ *
+ *  This routine does the bulk of the system initialization.
+ */
+
+#include <bspIo.h>
+
+BSP_output_char_function_type 		BSP_output_char;
+BSP_polling_getchar_function_type 	BSP_poll_char;
+extern void C4X_BSP_output_char(char c);
+
+void bsp_start( void )
+{
+  extern void *_WorkspaceBase;
+  extern rtems_unsigned32 _WorkspaceMax;
+  /*
+   * Set up our hooks
+   * Make sure libc_init is done before drivers initialized so that
+   * they can use atexit()
+   */
+
+  Cpu_table.pretasking_hook = bsp_pretasking_hook;    /* init libc, etc. */
+  Cpu_table.postdriver_hook = bsp_postdriver_hook;
+
+  /*
+   *  SIS does zero out memory BUT only when IT begins execution.  Thus
+   *  if we want to have a clean slate in the workspace each time we
+   *  begin execution of OUR application, then we must zero the workspace.
+   */
+  Cpu_table.do_zero_of_workspace = FALSE;
+
+  /*
+   *  This should be enough interrupt stack.
+   */
+
+  Cpu_table.interrupt_stack_size = 0;
+
+  BSP_Configuration.work_space_start = (void *)&_WorkspaceBase;
+  /* XXX check to see if satisfying small memory model */
+
+  if ( BSP_Configuration.work_space_size > (int) &_WorkspaceMax )
+    rtems_fatal_error_occurred( 0x43218765 );
+  
+
+  /*
+   *  Account for the console's resources
+   */
+
+  console_reserve_resources( &BSP_Configuration );
+
+  /*
+   * Add 1 extension for MPCI_fatal
+   */
+
+  if (BSP_Configuration.User_multiprocessing_table)
+    BSP_Configuration.maximum_extensions++;
+
+  
+  BSP_output_char = C4X_BSP_output_char;
+  BSP_poll_char = (BSP_polling_getchar_function_type) NULL;
+}
diff --git a/c/src/lib/libbsp/c4x/c4xsim/startup/linkcmds b/c/src/lib/libbsp/c4x/c4xsim/startup/linkcmds
new file mode 100644
index 0000000000..87f46ad7af
--- /dev/null
+++ b/c/src/lib/libbsp/c4x/c4xsim/startup/linkcmds
@@ -0,0 +1,76 @@
+OUTPUT_FORMAT("coff-c4x")
+ __SYSMEM_SIZE = DEFINED(__SYSMEM_SIZE) ? __SYSMEM_SIZE : 0x4000;
+ __STACK_SIZE  = DEFINED(__STACK_SIZE)  ? __STACK_SIZE  : 0x1000;
+ __HeapSize = DEFINED(__HeapSize) ? __HeapSize : 0x10000;
+ __WorkspaceMax = DEFINED(__WorkspaceMax) ? __WorkspaceMax : 256K;
+ __ClockFrequency = DEFINED(_ClockFrequency) ? _ClockFrequency : 50;
+ENTRY(_start)
+SECTIONS
+{
+  .vectors : {
+    . += 4 * 64;
+  }
+  .text 0x200 : {
+    *(.text)
+     ___CTOR_LIST__ = .;
+     LONG(___CTOR_END__ - ___CTOR_LIST__ - 2)
+     *(.ctors)
+     LONG(0);
+     ___CTOR_END__  = .;
+     ___DTOR_LIST__ = .;
+     LONG(___DTOR_END__ - ___DTOR_LIST__ - 2)
+     *(.dtors)
+     LONG(0)
+     ___DTOR_END__  = .;
+  }
+  .init : { *(.init) }
+  .fini : { *(.fini) }
+  .const  :
+  { 					
+    *(.const)
+  }
+  .cinit  :
+  { 					
+    *(.cinit)
+  }
+  .data  :
+  { 				
+    *(.data)
+  }
+  .comms  : {
+    *(.comms)
+  } 
+  .bss  : {
+    	
+    .bss = .;
+    *(.bss)
+    *(COMMON)
+  }
+  .stack  :
+  { 					
+    *(.stack)
+     .  =  . + __STACK_SIZE;		
+  }
+  .heap  :
+  { 					
+    __HeapStart = .;
+    . += __HeapSize;
+    __WorkspaceBase = .;
+    . += __WorkspaceMax;
+  }
+/*
+  .sysmem  :
+  { 					
+    *(.sysmem)
+  }
+*/
+  .stab  0  : 
+  {
+    [ .stab ]
+  }
+  .stabstr  0  :
+  {
+    [ .stabstr ]
+  }
+/* The TI tools sets cinit to -1 if the ram model is used.  */
+}
diff --git a/c/src/lib/libbsp/c4x/c4xsim/startup/spurious.c b/c/src/lib/libbsp/c4x/c4xsim/startup/spurious.c
new file mode 100644
index 0000000000..60872cd54d
--- /dev/null
+++ b/c/src/lib/libbsp/c4x/c4xsim/startup/spurious.c
@@ -0,0 +1,33 @@
+/*
+ *  CXX Simulator Spurious Trap Handler Assistant
+ *
+ *  This is just enough of a trap handler to let us know what 
+ *  the likely source of the trap was.
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <bspIo.h>
+#include <simio.h>
+
+/*
+ *  bsp_spurious_handler_assistant
+ *
+ *  We can't recover so just return to gdb.
+ */
+
+void bsp_spurious_handler_assistant(
+  rtems_vector_number  vector,
+  CPU_Interrupt_frame *isf
+)
+{
+  sim_exit();
+}