Port of RTEMS to the Texas Instruments C3x/C4x DSP families including

a BSP (c4xsim) supporting the simulator included with gdb.  This port
was done by Joel Sherrill and Jennifer Averett of OAR Corporation.
Also included with this port is a space/time optimization to eliminate
FP context switch management on CPUs without hardware or software FP.

An issue with this port was that sizeof(unsigned32) = sizeof(unsigned8)
on this CPU.  This required addressing alignment checks and assumptions
as well as fixing code that assumed sizeof(unsigned32) == 4.

12 files changed, 27 insertions, 0 deletions

diff --git a/c/src/exec/score/cpu/a29k/rtems/score/cpu.h b/c/src/exec/score/cpu/a29k/rtems/score/cpu.h
index 93528e5d7c..a4330123f2 100644
--- a/c/src/exec/score/cpu/a29k/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/a29k/rtems/score/cpu.h
@@ -187,6 +187,7 @@ extern void a29k_sigdfl_sup(void);
 #else
 #define CPU_HARDWARE_FP     FALSE
 #endif
+#define CPU_SOFTWARE_FP     FALSE
 
 /*
  *  Are all tasks RTEMS_FLOATING_POINT tasks implicitly?
diff --git a/c/src/exec/score/cpu/c4x/.cvsignore b/c/src/exec/score/cpu/c4x/.cvsignore
new file mode 100644
index 0000000000..525275c115
--- /dev/null
+++ b/c/src/exec/score/cpu/c4x/.cvsignore
@@ -0,0 +1,13 @@
+Makefile
+Makefile.in
+aclocal.m4
+config.cache
+config.guess
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+missing
+mkinstalldirs
diff --git a/c/src/exec/score/cpu/c4x/rtems/.cvsignore b/c/src/exec/score/cpu/c4x/rtems/.cvsignore
new file mode 100644
index 0000000000..282522db03
--- /dev/null
+++ b/c/src/exec/score/cpu/c4x/rtems/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in
diff --git a/c/src/exec/score/cpu/c4x/rtems/score/.cvsignore b/c/src/exec/score/cpu/c4x/rtems/score/.cvsignore
new file mode 100644
index 0000000000..282522db03
--- /dev/null
+++ b/c/src/exec/score/cpu/c4x/rtems/score/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in
diff --git a/c/src/exec/score/cpu/hppa1.1/rtems/score/cpu.h b/c/src/exec/score/cpu/hppa1.1/rtems/score/cpu.h
index e5db793923..037226fa21 100644
--- a/c/src/exec/score/cpu/hppa1.1/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/hppa1.1/rtems/score/cpu.h
@@ -56,6 +56,7 @@ extern "C" {
  */
 
 #define CPU_HARDWARE_FP                  TRUE
+#define CPU_SOFTWARE_FP                  FALSE
 #define CPU_ALL_TASKS_ARE_FP             TRUE
 #define CPU_IDLE_TASK_IS_FP              FALSE
 #define CPU_USE_DEFERRED_FP_SWITCH       FALSE
diff --git a/c/src/exec/score/cpu/i386/rtems/score/cpu.h b/c/src/exec/score/cpu/i386/rtems/score/cpu.h
index ab256cfa57..a0b7c2c4e2 100644
--- a/c/src/exec/score/cpu/i386/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/i386/rtems/score/cpu.h
@@ -58,6 +58,7 @@ extern "C" {
 #else
 #define CPU_HARDWARE_FP     FALSE
 #endif
+#define CPU_SOFTWARE_FP     FALSE
 
 #define CPU_ALL_TASKS_ARE_FP             FALSE
 #define CPU_IDLE_TASK_IS_FP              FALSE
diff --git a/c/src/exec/score/cpu/i960/rtems/score/cpu.h b/c/src/exec/score/cpu/i960/rtems/score/cpu.h
index 71834e6dd2..958e27e87b 100644
--- a/c/src/exec/score/cpu/i960/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/i960/rtems/score/cpu.h
@@ -58,6 +58,8 @@ extern "C" {
 #define CPU_HARDWARE_FP     FALSE
 #endif
 
+#define CPU_SOFTWARE_FP     FALSE
+
 #define CPU_ALL_TASKS_ARE_FP             FALSE
 #define CPU_IDLE_TASK_IS_FP              FALSE
 #define CPU_USE_DEFERRED_FP_SWITCH       TRUE
diff --git a/c/src/exec/score/cpu/mips/rtems/score/cpu.h b/c/src/exec/score/cpu/mips/rtems/score/cpu.h
index d7d1b42e0b..35d936ec7e 100644
--- a/c/src/exec/score/cpu/mips/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/mips/rtems/score/cpu.h
@@ -174,6 +174,7 @@ extern void mips_fatal_error ( int error );
 #else
 #define CPU_HARDWARE_FP     FALSE
 #endif
+#define CPU_SOFTWARE_FP     FALSE
 
 /*
  *  Are all tasks RTEMS_FLOATING_POINT tasks implicitly?
diff --git a/c/src/exec/score/cpu/mips64orion/rtems/score/cpu.h b/c/src/exec/score/cpu/mips64orion/rtems/score/cpu.h
index d7d1b42e0b..35d936ec7e 100644
--- a/c/src/exec/score/cpu/mips64orion/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/mips64orion/rtems/score/cpu.h
@@ -174,6 +174,7 @@ extern void mips_fatal_error ( int error );
 #else
 #define CPU_HARDWARE_FP     FALSE
 #endif
+#define CPU_SOFTWARE_FP     FALSE
 
 /*
  *  Are all tasks RTEMS_FLOATING_POINT tasks implicitly?
diff --git a/c/src/exec/score/cpu/sh/rtems/score/cpu.h b/c/src/exec/score/cpu/sh/rtems/score/cpu.h
index 43ccf35a73..f6c9252912 100644
--- a/c/src/exec/score/cpu/sh/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/sh/rtems/score/cpu.h
@@ -132,6 +132,7 @@ extern "C" {
  */
 
 #define CPU_HARDWARE_FP     FALSE
+#define CPU_SOFTWARE_FP     FALSE
 
 /*
  *  Are all tasks RTEMS_FLOATING_POINT tasks implicitly?
diff --git a/c/src/exec/score/cpu/sparc/rtems/score/cpu.h b/c/src/exec/score/cpu/sparc/rtems/score/cpu.h
index 5baf9aac5f..f7fbf121f9 100644
--- a/c/src/exec/score/cpu/sparc/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/sparc/rtems/score/cpu.h
@@ -105,6 +105,7 @@ extern "C" {
 #else
 #define CPU_HARDWARE_FP     FALSE
 #endif
+#define CPU_SOFTWARE_FP     FALSE
 
 /*
  *  Are all tasks FLOATING_POINT tasks implicitly?
diff --git a/c/src/exec/score/cpu/unix/rtems/score/cpu.h b/c/src/exec/score/cpu/unix/rtems/score/cpu.h
index d7019c3eec..7e0cbf7777 100644
--- a/c/src/exec/score/cpu/unix/rtems/score/cpu.h
+++ b/c/src/exec/score/cpu/unix/rtems/score/cpu.h
@@ -158,6 +158,7 @@ extern "C" {
  */
 
 #define CPU_HARDWARE_FP     TRUE
+#define CPU_SOFTWARE_FP     FALSE
 
 /*
  *  Are all tasks RTEMS_FLOATING_POINT tasks implicitly?