Hard FP support added to CM4 Makefiles. Improved F4 IRQ_STORM demo.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6664 35acf78f-673a-0410-8e92-d51de3d6d3f4

demos/nil/NIL-STM32F303-DISCOVERY/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

demos/nil/NIL-STM32F373-STM32373C_EVAL/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

demos/rt/RT-STM32F303-DISCOVERY/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

demos/rt/RT-STM32F373-STM32373C_EVAL/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

demos/rt/RT-STM32F407-DISCOVERY-MEMS/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

demos/rt/RT-STM32F407-DISCOVERY/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

demos/rt/RT-STM32F429-DISCOVERY/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

os/common/ports/ARMCMx/compilers/GCC/rules.mk

@@ -23,8 +23,8 @@ ifeq ($(USE_LTO),yes)
 endif
 
 # FPU-related options
-ifeq ($(USE_FPU),yes)
-  USE_OPT += -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -fsingle-precision-constant
+ifneq ($(USE_FPU),no)
+  OPT += -mfloat-abi=$(USE_FPU) -mfpu=fpv4-sp-d16 -fsingle-precision-constant
   DDEFS += -DCORTEX_USE_FPU=TRUE
   DADEFS += -DCORTEX_USE_FPU=TRUE
 else

testhal/STM32F30x/ADC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/ADC_DUAL/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/CAN/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/EXT/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/IRQ_STORM/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/PWM-ICU/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/SPI/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/UART/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F30x/USB_CDC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/ADC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/CAN/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/EXT/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/I2C/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/IRQ_STORM/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/PWM-ICU/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/SDADC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/SPI/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/UART/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F37x/USB_CDC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/ADC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/CAN/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/DMA_STORM/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/EXT/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/GPT/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/I2C/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/IRQ_STORM/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/IRQ_STORM/main.c

@@ -286,7 +286,9 @@ int main(void) {
     println("");
     saturated = FALSE;
     threshold = 0;
-    for (interval = 2000; interval >= 10; interval -= interval / 10) {
+    for (interval = 2000;
+        interval >= 2;
+        interval -= (interval + 9) / 10) {
       gptStartContinuous(&GPTD4, interval - 1); /* Slightly out of phase.*/
       gptStartContinuous(&GPTD3, interval + 1); /* Slightly out of phase.*/
       chThdSleepMilliseconds(1000);

testhal/STM32F4xx/IRQ_STORM_FPU/Makefile

@@ -58,9 +58,9 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
-  USE_FPU = yes
+  USE_FPU = hard
 endif
 
 #

testhal/STM32F4xx/PWM-ICU/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/RTC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/SDC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/SPI/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/UART/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif

testhal/STM32F4xx/USB_CDC/Makefile

@@ -58,7 +58,7 @@ ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
   USE_EXCEPTIONS_STACKSIZE = 0x400
 endif
 
-# Enables the use of FPU on Cortex-M4.
+# Enables the use of FPU on Cortex-M4 (no, softfp, hard).
 ifeq ($(USE_FPU),)
   USE_FPU = no
 endif