readline() (and hence NSH) now accept the DEL character as well as the Backspace character for the backspace functionality

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4428 42af7a65-404d-4744-a932-0658087f49c3

ChangeLog

@@ -2506,3 +2506,5 @@
 	  submitted by Max Nekludov.
 	* arch/arm/src/armv7-m/up_fpu.S and arch/arm/src/stm32/stm32_vectors.S:  Fix
 	  lazy FPU register saving with CONFIG_ARCH_FPU is set in the configuration.
+	* arch/arm/src/armv7-m:  Lazy saving of floating point registers on context
+	  switches now seems to be functional.

configs/stm3240g-eval/README.txt

@@ -909,8 +909,28 @@ Where <subdir> is one of the following:
     examples/ostest.  By default, this project assumes that you are
     using the DFU bootloader.
 
-    CONFIG_STM32_CODESOURCERYW=y  : CodeSourcery under Windows
+      CONFIG_STM32_CODESOURCERYW=y  : CodeSourcery under Windows
 
+    If you use the Atollic toolchain, then the FPU test can be enabled in the
+    examples/ostest by adding the following your NuttX configuration file:
+
+     -CONFIG_ARCH_FPU=n             : Enabled the FPU
+     +CONFIG_ARCH_FPU=y
+
+     -CONFIG_STM32_CODESOURCERYW=y  : Disable CodeSourcery under Windows
+     +CONFIG_STM32_CODESOURCERYL=n
+
+     -CONFIG_STM32_ATOLLIC=y        : Enable the Atollic toolchain
+     +CONFIG_STM32_ATOLLIC=n
+
+     -CONFIG_SCHED_WAITPID=y         : Enable the waitpid() API needed by the FPU test
+     +CONFIG_SCHED_WAITPID=n
+
+    The FPU test also needs to know the size of the FPU registers save area in
+    bytes (see arch/arm/include/armv7-m/irq_lazyfpu.h):
+
+     -CONFIG_EXAMPLES_OSTEST_FPUSIZE=(4*33)
+ 
   telnetd:
   --------
 

configs/stm32f4discovery/README.txt

@@ -711,6 +711,27 @@ Where <subdir> is one of the following:
 
     CONFIG_STM32_CODESOURCERYW=y  : CodeSourcery under Windows
 
+
+    If you use the Atollic toolchain, then the FPU test can be enabled in the
+    examples/ostest by adding the following your NuttX configuration file:
+
+     -CONFIG_ARCH_FPU=n             : Enabled the FPU
+     +CONFIG_ARCH_FPU=y
+
+     -CONFIG_STM32_CODESOURCERYW=y  : Disable CodeSourcery under Windows
+     +CONFIG_STM32_CODESOURCERYL=n
+
+     -CONFIG_STM32_ATOLLIC=y        : Enable the Atollic toolchain
+     +CONFIG_STM32_ATOLLIC=n
+
+     -CONFIG_SCHED_WAITPID=y         : Enable the waitpid() API needed by the FPU test
+     +CONFIG_SCHED_WAITPID=n
+
+    The FPU test also needs to know the size of the FPU registers save area in
+    bytes (see arch/arm/include/armv7-m/irq_lazyfpu.h):
+
+     -CONFIG_EXAMPLES_OSTEST_FPUSIZE=(4*33)
+ 
   nsh:
   ---
     Configures the NuttShell (nsh) located at apps/examples/nsh.  The