Fixes a few more high priority, nested interrupt logic

35 files changed, 141 insertions, 298 deletions

diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 7ddd2d0a4..ba2493b8b 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -6273,3 +6273,13 @@
 	  (2013-12-22).
 	* configs/viewtool-stm32f107/scripts:  Need to do some special things
 	  in linking of the common vectors are used (2013-12-22).
+	* arch/arm/include/*/irq*.h:  Add definition NR_VECTORS so that the RAM
+	  vector logic can know how many vectors there are.  NR_IRQS is often
+	  not equal to NR_VECTORS (2013-12-23).
+	* arch/arm/src/*_vectors.S:  Standardize the name of the vector table
+	  and the name of the common vector handling logic so that the MCU-
+	  independent logic and work with these (2013-12-23).
+	* configs/viewtool-stm32f107/scripts: Move the RAM vector tables to the
+	  beginning of SRAM.  It seems to require this alignament.  Also, we
+	  don't need different scripts for the CMNVECTOR case now that the vector
+	  table has a common name.
diff --git a/nuttx/arch/arm/include/kinetis/irq.h b/nuttx/arch/arm/include/kinetis/irq.h
index 7d72fbd18..a906f3450 100644
--- a/nuttx/arch/arm/include/kinetis/irq.h
+++ b/nuttx/arch/arm/include/kinetis/irq.h
@@ -294,7 +294,7 @@
 
 /* Note that the total number of IRQ numbers supported is equal to the number of
  * valid interrupt vectors.  This is wasteful in that certain tables are sized by
- * this value.  There are only 97 valid interrupts so, potentially the numver of
+ * this value.  There are only 97 valid interrupts so, potentially the number of
  * IRQs to could be reduced to 97.  However, equating IRQ numbers with vector numbers
  * also simplifies operations on NVIC registers and (at least in my state of mind
  * now) seems to justify the waste.
diff --git a/nuttx/arch/arm/include/lm/lm3s_irq.h b/nuttx/arch/arm/include/lm/lm3s_irq.h
index 7dc4b7ee3..04b6d9a12 100644
--- a/nuttx/arch/arm/include/lm/lm3s_irq.h
+++ b/nuttx/arch/arm/include/lm/lm3s_irq.h
@@ -118,6 +118,7 @@
 
 #  define LM_RESERVED_70   (70) /* Vector 70: Reserved */
 
+#  define NR_VECTORS       (71)
 #  define NR_IRQS          (60) /* (Really less because of reserved vectors) */
 
 #elif defined(CONFIG_ARCH_CHIP_LM3S6432)
@@ -183,7 +184,9 @@
 
 #  define LM_RESERVED_70   (70) /* Vector 70: Reserved */
 
+#  define NR_VECTORS       (71)
 #  define NR_IRQS          (60) /* (Really less because of reserved vectors) */
+
 #elif defined(CONFIG_ARCH_CHIP_LM3S6965)
 #  define LM_IRQ_GPIOA     (16) /* Vector 16: GPIO Port A */
 #  define LM_IRQ_GPIOB     (17) /* Vector 17: GPIO Port B */
@@ -247,7 +250,9 @@
 
 #  define LM_RESERVED_70   (70) /* Vector 70: Reserved */
 
+#  define NR_VECTORS       (71)
 #  define NR_IRQS          (60) /* (Really less because of reserved vectors) */
+
 #elif defined(CONFIG_ARCH_CHIP_LM3S9B96)
 #  define LM_IRQ_GPIOA     (16) /* Vector 16: GPIO Port A */
 #  define LM_IRQ_GPIOB     (17) /* Vector 17: GPIO Port B */
@@ -312,7 +317,9 @@
 #  define LM_IRQ_GPIOJ     (70) /* Vector 70: GPIO Port J */
 #  define LM_RESERVED_71   (71) /* Vector 71: Reserved */
 
+#  define NR_VECTORS       (72)
 #  define NR_IRQS          (71) /* (Really less because of reserved vectors) */
+
 #elif defined(CONFIG_ARCH_CHIP_LM3S8962)
 #  define LM_IRQ_GPIOA     (16) /* Vector 16: GPIO Port A */
 #  define LM_IRQ_GPIOB     (17) /* Vector 17: GPIO Port B */
@@ -376,7 +383,9 @@
 
 #  define LM_RESERVED_70   (70) /* Vector 70: Reserved */
 
+#  define NR_VECTORS       (71)
 #  define NR_IRQS          (60) /* (Really less because of reserved vectors) */
+
 #else
 #  error "IRQ Numbers not specified for this Stellaris chip"
 #endif
diff --git a/nuttx/arch/arm/include/lm/lm4f_irq.h b/nuttx/arch/arm/include/lm/lm4f_irq.h
index 2d4cb3c53..f00cf8aad 100644
--- a/nuttx/arch/arm/include/lm/lm4f_irq.h
+++ b/nuttx/arch/arm/include/lm/lm4f_irq.h
@@ -211,6 +211,7 @@
 #  define LM_RESERVED_153  (153) /* Vector 153: Reserved */
 #  define LM_RESERVED_154  (154) /* Vector 154: Reserved */
 
+#  define NR_VECTORS       (155)
 #  define NR_IRQS          (123) /* (Really fewer because of reserved vectors) */
 
 #else
diff --git a/nuttx/arch/arm/include/lpc17xx/lpc176x_irq.h b/nuttx/arch/arm/include/lpc17xx/lpc176x_irq.h
index ac97195e6..4352de62d 100644
--- a/nuttx/arch/arm/include/lpc17xx/lpc176x_irq.h
+++ b/nuttx/arch/arm/include/lpc17xx/lpc176x_irq.h
@@ -223,6 +223,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS              LPC17_IRQ_NIRQS
 #define NR_IRQS                 (LPC17_IRQ_EXTINT+LPC17_IRQ_NEXTINT+LPC17_NGPIOAIRQS)
 
 /****************************************************************************
diff --git a/nuttx/arch/arm/include/lpc17xx/lpc178x_irq.h b/nuttx/arch/arm/include/lpc17xx/lpc178x_irq.h
index a2de51ad2..64498e147 100644
--- a/nuttx/arch/arm/include/lpc17xx/lpc178x_irq.h
+++ b/nuttx/arch/arm/include/lpc17xx/lpc178x_irq.h
@@ -269,6 +269,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS              LPC17_IRQ_NIRQS
 #define NR_IRQS                 (LPC17_IRQ_EXTINT+LPC17_IRQ_NEXTINT+LPC17_NGPIOAIRQS)
 
 /****************************************************************************
diff --git a/nuttx/arch/arm/include/lpc43xx/irq.h b/nuttx/arch/arm/include/lpc43xx/irq.h
index f2c899a44..37c1e9c29 100644
--- a/nuttx/arch/arm/include/lpc43xx/irq.h
+++ b/nuttx/arch/arm/include/lpc43xx/irq.h
@@ -133,6 +133,7 @@
  * supported)
  */
 
+#define NR_VECTORS                LPC43M4_IRQ_NIRQS
 #define NR_IRQS                   LPC43M4_IRQ_NIRQS
 
 /* Cortex-M0 External interrupts (vectors >= 16) */
@@ -183,6 +184,7 @@
  */
 
 #if 0
+#define NR_VECTORS                LPC43M0_IRQ_NIRQS
 #define NR_IRQS                   LPC43M0_IRQ_NIRQS
 #endif
 
diff --git a/nuttx/arch/arm/include/sam34/sam3u_irq.h b/nuttx/arch/arm/include/sam34/sam3u_irq.h
index 6a8c5380a..780140246 100644
--- a/nuttx/arch/arm/include/sam34/sam3u_irq.h
+++ b/nuttx/arch/arm/include/sam34/sam3u_irq.h
@@ -238,6 +238,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS            SAM_IRQ_NIRQS
 #define NR_IRQS               (SAM_IRQ_EXTINT + SAM_IRQ_NEXTINT + \
                                SAM_NGPIOAIRQS + SAM_NGPIOBIRQS + SAM_NGPIOCIRQS)
 
diff --git a/nuttx/arch/arm/include/sam34/sam3x_irq.h b/nuttx/arch/arm/include/sam34/sam3x_irq.h
index d94a5aa1e..38ea07cff 100644
--- a/nuttx/arch/arm/include/sam34/sam3x_irq.h
+++ b/nuttx/arch/arm/include/sam34/sam3x_irq.h
@@ -392,6 +392,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS            SAM_IRQ_NIRQS
 #define NR_IRQS               (SAM_IRQ_EXTINT + SAM_IRQ_NEXTINT + \
                                SAM_NGPIOAIRQS + SAM_NGPIOBIRQS + SAM_NGPIOCIRQS + \
                                SAM_NGPIODIRQS + SAM_NGPIOEIRQS + SAM_NGPIOFIRQS)
diff --git a/nuttx/arch/arm/include/sam34/sam4e_irq.h b/nuttx/arch/arm/include/sam34/sam4e_irq.h
index 5a647418e..d0800d45d 100755
--- a/nuttx/arch/arm/include/sam34/sam4e_irq.h
+++ b/nuttx/arch/arm/include/sam34/sam4e_irq.h
@@ -296,6 +296,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS            SAM_IRQ_NIRQS
 #define NR_IRQS               (SAM_IRQ_EXTINT + SAM_IRQ_NEXTINT + \
                                SAM_NGPIOAIRQS + SAM_NGPIOBIRQS + SAM_NGPIOCIRQS + \
                                SAM_NGPIODIRQS + SAM_NGPIOEIRQS)
diff --git a/nuttx/arch/arm/include/sam34/sam4l_irq.h b/nuttx/arch/arm/include/sam34/sam4l_irq.h
index c33e8e162..5a384170c 100644
--- a/nuttx/arch/arm/include/sam34/sam4l_irq.h
+++ b/nuttx/arch/arm/include/sam34/sam4l_irq.h
@@ -299,6 +299,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS            SAM_IRQ_NIRQS
 #define NR_IRQS               (SAM_IRQ_EXTINT + SAM_IRQ_NEXTINT + \
                                SAM_NGPIOAIRQS + SAM_NGPIOBIRQS + SAM_NGPIOCIRQS)
 
diff --git a/nuttx/arch/arm/include/sam34/sam4s_irq.h b/nuttx/arch/arm/include/sam34/sam4s_irq.h
index fdc66808a..2d79370af 100644
--- a/nuttx/arch/arm/include/sam34/sam4s_irq.h
+++ b/nuttx/arch/arm/include/sam34/sam4s_irq.h
@@ -249,6 +249,7 @@
 
 /* Total number of IRQ numbers */
 
+#define NR_VECTORS           SAM_IRQ_NIRQS
 #define NR_IRQS              (SAM_IRQ_EXTINT + SAM_IRQ_NEXTINT + \
                               SAM_NGPIOAIRQS + SAM_NGPIOBIRQS + SAM_NGPIOCIRQS)
 
diff --git a/nuttx/arch/arm/include/stm32/stm32f10xxx_irq.h b/nuttx/arch/arm/include/stm32/stm32f10xxx_irq.h
index e537999d3..05f43c636 100644
--- a/nuttx/arch/arm/include/stm32/stm32f10xxx_irq.h
+++ b/nuttx/arch/arm/include/stm32/stm32f10xxx_irq.h
@@ -128,6 +128,8 @@
 #  define STM32_IRQ_DMA2CH3     (74) /* 58: DMA2 Channel 3 global interrupt */
 #  define STM32_IRQ_DMA2CH45    (75) /* 59: DMA2 Channel 4 and 5 global interrupt */
 #  define STM32_IRQ_DMA2CH5     (76) /* 60: DMA2 Channel 5 global interrupt */
+
+#  define NR_VECTORS            (77)
 #  define NR_IRQS               (77)
 
 /* Connectivity Line Devices */
@@ -201,6 +203,8 @@
 #  define STM32_IRQ_CAN2RX1     (81) /* 65: CAN2 RX1 interrupt */
 #  define STM32_IRQ_CAN2SCE     (82) /* 66: CAN2 SCE interrupt */
 #  define STM32_IRQ_OTGFS       (83) /* 67: USB On The Go FS global interrupt */
+
+#  define NR_VECTORS            (84)
 #  define NR_IRQS               (84)
 
 /* Medium and High Density Devices */
@@ -266,6 +270,8 @@
 #  define STM32_IRQ_DMA2CH2     (73) /* 57: DMA2 Channel 2 global interrupt */
 #  define STM32_IRQ_DMA2CH3     (74) /* 58: DMA2 Channel 3 global interrupt */
 #  define STM32_IRQ_DMA2CH45    (75) /* 59: DMA2 Channel 4&5 global interrupt */
+
+#  define NR_VECTORS            (76)
 #  define NR_IRQS               (76)
 
 /* Convenience definitions for interrupts with multiple functions */
diff --git a/nuttx/arch/arm/include/stm32/stm32f20xxx_irq.h b/nuttx/arch/arm/include/stm32/stm32f20xxx_irq.h
index d88c5d070..41daa38e9 100644
--- a/nuttx/arch/arm/include/stm32/stm32f20xxx_irq.h
+++ b/nuttx/arch/arm/include/stm32/stm32f20xxx_irq.h
@@ -150,6 +150,7 @@
 #define STM32_IRQ_HASH        (STM32_IRQ_INTERRUPTS+80) /* 80: Hash and Rng global interrupt */
 #define STM32_IRQ_RNG         (STM32_IRQ_INTERRUPTS+80) /* 80: Hash and Rng global interrupt */
 
+#define NR_VECTORS            (STM32_IRQ_INTERRUPTS+81)
 #define NR_IRQS               (STM32_IRQ_INTERRUPTS+81)
 
 /****************************************************************************************************
diff --git a/nuttx/arch/arm/include/stm32/stm32f30xxx_irq.h b/nuttx/arch/arm/include/stm32/stm32f30xxx_irq.h
index a1be95573..7d180eab2 100644
--- a/nuttx/arch/arm/include/stm32/stm32f30xxx_irq.h
+++ b/nuttx/arch/arm/include/stm32/stm32f30xxx_irq.h
@@ -161,6 +161,7 @@
 #define STM32_IRQ_RESERVED80  (STM32_IRQ_INTERRUPTS+80) /* 80: Reserved */
 #define STM32_IRQ_FPU         (STM32_IRQ_INTERRUPTS+81) /* 81: FPU global interrupt */
 
+#define NR_VECTORS            (STM32_IRQ_INTERRUPTS+82)
 #define NR_IRQS               (STM32_IRQ_INTERRUPTS+82)
 
 /****************************************************************************************************
diff --git a/nuttx/arch/arm/include/stm32/stm32f40xxx_irq.h b/nuttx/arch/arm/include/stm32/stm32f40xxx_irq.h
index 7087d8507..0b17b84be 100644
--- a/nuttx/arch/arm/include/stm32/stm32f40xxx_irq.h
+++ b/nuttx/arch/arm/include/stm32/stm32f40xxx_irq.h
@@ -154,21 +154,29 @@
 #define STM32_IRQ_FPU         (STM32_IRQ_INTERRUPTS+81) /* 81: FPU global interrupt */
 
 #if !defined(CONFIG_STM32_STM32F427) && !defined(CONFIG_STM32_STM32F429)
+#  define NR_VECTORS            (STM32_IRQ_INTERRUPTS+82)
 #  define NR_IRQS               (STM32_IRQ_INTERRUPTS+82)
+
 #else
 #  define STM32_IRQ_UART7       (STM32_IRQ_INTERRUPTS+82) /* 82: UART7 interrupt */
 #  define STM32_IRQ_UART8       (STM32_IRQ_INTERRUPTS+83) /* 83: UART8 interrupt */
 #  define STM32_IRQ_SPI4        (STM32_IRQ_INTERRUPTS+84) /* 84: SPI4 interrupt */
 #  define STM32_IRQ_SPI5        (STM32_IRQ_INTERRUPTS+85) /* 85: SPI5 interrupt */
 #  define STM32_IRQ_SPI6        (STM32_IRQ_INTERRUPTS+86) /* 86: SPI6 interrupt */
+
 #if defined(CONFIG_STM32_STM32F429)
 #  define STM32_IRQ_SAI1        (STM32_IRQ_INTERRUPTS+87) /* 87: SAI1 interrupt */
 #  define STM32_IRQ_LTDCINT     (STM32_IRQ_INTERRUPTS+88) /* 88: LTDCINT interrupt */
 #  define STM32_IRQ_LTDCERRINT  (STM32_IRQ_INTERRUPTS+89) /* 89: LTDCERRINT interrupt */
 #  define STM32_IRQ_DMA2D       (STM32_IRQ_INTERRUPTS+90) /* 90: DMA2D interrupt */
+
+#  define NR_VECTORS            (STM32_IRQ_INTERRUPTS+91)
 #  define NR_IRQS               (STM32_IRQ_INTERRUPTS+91)
+
 #else
+#  define NR_VECTORS            (STM32_IRQ_INTERRUPTS+87)
 #  define NR_IRQS               (STM32_IRQ_INTERRUPTS+87)
+
 #endif
 #endif
 
diff --git a/nuttx/arch/arm/include/stm32/stm32l15xxx_irq.h b/nuttx/arch/arm/include/stm32/stm32l15xxx_irq.h
index 520ef6b9f..b66c227d2 100644
--- a/nuttx/arch/arm/include/stm32/stm32l15xxx_irq.h
+++ b/nuttx/arch/arm/include/stm32/stm32l15xxx_irq.h
@@ -108,6 +108,7 @@
 #  define STM32_IRQ_TIM6        (STM32_IRQ_INTERRUPTS+43) /* 43: TIM6 global interrupt */
 #  define STM32_IRQ_TIM7        (STM32_IRQ_INTERRUPTS+44) /* 44: TIM7 global interrupt */
 
+#  define NR_VECTORS            (STM32_IRQ_INTERRUPTS+45)
 #  define NR_IRQS               (STM32_IRQ_INTERRUPTS+45)
 
 /* External interrupts (vectors >= 16) medium+ density devices */
@@ -170,6 +171,7 @@
 #  define STM32_IRQ_AES         (STM32_IRQ_INTERRUPTS+52) /* 52: AES global interrupt */
 #  define STM32_IRQ_COMPACQ     (STM32_IRQ_INTERRUPTS+53) /* 53: Comparator Channel Acquisition Interrupt */
 
+#  define NR_VECTORS            (STM32_IRQ_INTERRUPTS+54)
 #  define NR_IRQS               (STM32_IRQ_INTERRUPTS+54)
 
 /* External interrupts (vectors >= 16) high density devices */
@@ -235,6 +237,7 @@
 #  define STM32_IRQ_AES         (STM32_IRQ_INTERRUPTS+55) /* 55: AES global interrupt */
 #  define STM32_IRQ_COMPACQ     (STM32_IRQ_INTERRUPTS+56) /* 56: Comparator Channel Acquisition Interrupt */
 
+#  define NR_VECTORS            (STM32_IRQ_INTERRUPTS+57)
 #  define NR_IRQS               (STM32_IRQ_INTERRUPTS+57)
 #else
 #  error "Unknown STM32L density"
diff --git a/nuttx/arch/arm/src/armv7-m/ram_vectors.h b/nuttx/arch/arm/src/armv7-m/ram_vectors.h
index 81539872d..0306655f8 100644
--- a/nuttx/arch/arm/src/armv7-m/ram_vectors.h
+++ b/nuttx/arch/arm/src/armv7-m/ram_vectors.h
@@ -1,4 +1,4 @@
-/************************************************************************************
+/****************************************************************************
  * arch/arm/src/armv7-m/ram_vectors.h
  *
  *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
@@ -31,48 +31,37 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************************************/
+ ****************************************************************************/
 
 #ifndef __ARCH_ARM_SRC_COMMON_ARMV7_M_RAM_VECTORS_H
 #define __ARCH_ARM_SRC_COMMON_ARMV7_M_RAM_VECTORS_H
 
-/************************************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
+#include <arch/irq.h>
 
-/* If CONFIG_ARMV7M_CMNVECTOR is defined then the number of peripheral interrupts
- * is provided in chip.h.
- */
-
-#include "chip.h"
 #include "up_internal.h"
 
 #ifdef CONFIG_ARCH_RAMVECTORS
 
-/************************************************************************************
+/****************************************************************************
  * Pre-processor Definitions
- ************************************************************************************/
-/* This logic currently only works if CONFIG_ARMV7M_CMNVECTOR is defined.  That is
- * because CONFIG_ARMV7M_CMNVECTOR is needed to induce chip.h into giving us the
- * number of peripheral interrupts. "Oh want a tangled web we weave..."
- */
-
-#ifndef CONFIG_ARMV7M_CMNVECTOR
-#  error "This logic requires CONFIG_ARMV7M_CMNVECTOR"
-#endif
+ ****************************************************************************/
 
-/* This, then is the size of the vector table (in 4-byte entries).  This size
- * includes the (1) the device interrupts, (2) space for 15 Cortex-M excpetions, and
- * (3) IDLE stack pointer which lies at the beginning of the table.
+/* This is the size of the vector table (in 4-byte entries).  This size
+ * includes the (1) the peripheral interrupts, (2) space for 15 Cortex-M
+ * exceptions, and (3) IDLE stack pointer which lies at the beginning of the
+ * table.
  */
 
-#define ARMV7M_VECTAB_SIZE (ARMV7M_PERIPHERAL_INTERRUPTS + 16)
+#define ARMV7M_VECTAB_SIZE (NR_VECTORS + 16)
 
-/************************************************************************************
+/****************************************************************************
  * Public Data
- ************************************************************************************/
+ ****************************************************************************/
 
 /* If CONFIG_ARCH_RAMVECTORS is defined, then the ARM logic must provide
  * ARM-specific implementations of irq_initialize(), irq_attach(), and
@@ -80,15 +69,18 @@
  * table resides in RAM, has the name up_ram_vectors, and has been
  * properly positioned and aligned in memory by the linker script.
  *
- * REVISIT: Can this alignment requirement vary from core-to-core?
+ * REVISIT: Can this alignment requirement vary from core-to-core?  Yes, it
+ * depends on the number of vectors supported by the MCU. The safest thing
+ * to do is to put the vector table at the beginning of RAM in order toforce
+ * the highest alignment possible.
  */
 
 extern up_vector_t g_ram_vectors[ARMV7M_VECTAB_SIZE]
   __attribute__ ((section (".ram_vectors"), aligned (128)));
 
-/************************************************************************************
+/****************************************************************************
  * Public Function Prototypes
- ************************************************************************************/
+ ****************************************************************************/
 
 /****************************************************************************
  * Name: up_ramvec_initialize
diff --git a/nuttx/arch/arm/src/armv7-m/up_ramvec_attach.c b/nuttx/arch/arm/src/armv7-m/up_ramvec_attach.c
index 4bb54c8a3..13db26492 100644
--- a/nuttx/arch/arm/src/armv7-m/up_ramvec_attach.c
+++ b/nuttx/arch/arm/src/armv7-m/up_ramvec_attach.c
@@ -105,7 +105,7 @@ int up_ramvec_attach(int irq, up_vector_t vector)
 
   intvdbg("%s IRQ%d\n", vector ? "Attaching" : "Detaching", irq);
 
-  if ((unsigned)irq < (STM32_IRQ_INTERRUPTS + ARMV7M_PERIPHERAL_INTERRUPTS))
+  if ((unsigned)irq < NR_VECTORS)
     {
       irqstate_t flags;
 
diff --git a/nuttx/arch/arm/src/armv7-m/up_ramvec_initialize.c b/nuttx/arch/arm/src/armv7-m/up_ramvec_initialize.c
index be7117eeb..b8bf20572 100644
--- a/nuttx/arch/arm/src/armv7-m/up_ramvec_initialize.c
+++ b/nuttx/arch/arm/src/armv7-m/up_ramvec_initialize.c
@@ -84,7 +84,10 @@
  * table resides in RAM, has the name up_ram_vectors, and has been
  * properly positioned and aligned in memory by the linker script.
  *
- * REVISIT: Can this alignment requirement vary from core-to-core?
+ * REVISIT: Can this alignment requirement vary from core-to-core?  Yes, it
+ * depends on the number of vectors supported by the MCU. The safest thing
+ * to do is to put the vector table at the beginning of RAM in order toforce
+ * the highest alignment possible.
  */
 
 up_vector_t g_ram_vectors[ARMV7M_VECTAB_SIZE]
diff --git a/nuttx/arch/arm/src/armv7-m/up_vectors.c b/nuttx/arch/arm/src/armv7-m/up_vectors.c
index b85ac9246..b3f393f3b 100644
--- a/nuttx/arch/arm/src/armv7-m/up_vectors.c
+++ b/nuttx/arch/arm/src/armv7-m/up_vectors.c
@@ -76,7 +76,7 @@ extern char _ebss;
  * As all exceptions (interrupts) are routed via exception_common, we just need to
  * fill this array with pointers to it.
  *
- * Note that the [ ... ] desginated initialiser is a GCC extension.
+ * Note that the [ ... ] designated initialiser is a GCC extension.
  */
 
 unsigned _vectors[] __attribute__((section(".vectors"))) = 
diff --git a/nuttx/arch/arm/src/kinetis/kinetis_vectors.S b/nuttx/arch/arm/src/kinetis/kinetis_vectors.S
index 5bf9ce3ba..619f133a2 100644
--- a/nuttx/arch/arm/src/kinetis/kinetis_vectors.S
+++ b/nuttx/arch/arm/src/kinetis/kinetis_vectors.S
@@ -119,7 +119,7 @@
 	.thumb_func
 \label:
 	mov		r0, #\irqno
-	b		kinetis_common
+	b		exception_common
 	.endm
 
 /************************************************************************************************
@@ -129,10 +129,10 @@
 	.section	.vectors, "ax"
 	.code		16
 	.align		2
-	.globl		kinetis_vectors
-	.type		kinetis_vectors, function
+	.globl		_vectors
+	.type		_vectors, function
 
-kinetis_vectors:
+_vectors:
 
 /* Processor Exceptions *************************************************************************/
 
@@ -614,7 +614,10 @@ handlers:
  *      We are in handler mode and the current SP is the MSP
  */
 
-kinetis_common:
+	.globl		exception_common
+	.type		exception_common, function
+
+exception_common:
 
 	/* Complete the context save */
 
diff --git a/nuttx/arch/arm/src/lm/lm_start.c b/nuttx/arch/arm/src/lm/lm_start.c
index 700019193..96cb79822 100644
--- a/nuttx/arch/arm/src/lm/lm_start.c
+++ b/nuttx/arch/arm/src/lm/lm_start.c
@@ -66,7 +66,7 @@
  * Public Data
  ****************************************************************************/
 
-extern void lm_vectors(void);
+extern void _vectors(void);
 
 /****************************************************************************
  * Private Functions
diff --git a/nuttx/arch/arm/src/lm/lm_vectors.S b/nuttx/arch/arm/src/lm/lm_vectors.S
index 6635fa906..796ad5554 100644
--- a/nuttx/arch/arm/src/lm/lm_vectors.S
+++ b/nuttx/arch/arm/src/lm/lm_vectors.S
@@ -126,7 +126,7 @@
 	.thumb_func
 \label:
 	mov		r0, #\irqno
-	b		lm_irqcommon
+	b		exception_common
 	.endm
 
 /************************************************************************************
@@ -136,10 +136,10 @@
 	.section	.vectors, "ax"
 	.code		16
 	.align		2
-	.globl		lm_vectors
-	.type		lm_vectors, function
+	.globl		_vectors
+	.type		_vectors, function
 
-lm_vectors:
+_vectors:
 
 /* Processor Exceptions */
 
@@ -171,7 +171,7 @@ lm_vectors:
 #define UNUSED(i) .word lm_reserved
 
 #include "chip/chip/lm_vectors.h"
-	.size	lm_vectors, .-lm_vectors
+	.size	_vectors, .-_vectors
 
 /************************************************************************************
  * .text
@@ -218,7 +218,9 @@ handlers:
  *      We are in handler mode and the current SP is the MSP
  */
 
-lm_irqcommon:
+	.globl		exception_common
+	.type		exception_common, function
+exception_common:
 
 	/* Complete the context save */
 
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_vectors.S b/nuttx/arch/arm/src/lpc17xx/lpc17_vectors.S
index beb44d5e6..4be59a4d6 100644
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_vectors.S
+++ b/nuttx/arch/arm/src/lpc17xx/lpc17_vectors.S
@@ -121,7 +121,7 @@
 	.thumb_func
 \label:
 	mov		r0, #\irqno
-	b		lpc17_common
+	b		exception_common
 	.endm
 
 /************************************************************************************************
@@ -131,10 +131,10 @@
 	.section	.vectors, "ax"
 	.code		16
 	.align		2
-	.globl		lpc17_vectors
-	.type		lpc17_vectors, function
+	.globl		_vectors
+	.type		_vectors, function
 
-lpc17_vectors:
+_vectors:
 
 /* Processor Exceptions */
 
@@ -171,7 +171,7 @@ lpc17_vectors:
 #  error "Unrecognized LPC17xx family"
 #endif
 
-	.size	lpc17_vectors, .-lpc17_vectors
+	.size	_vectors, .-_vectors
 
 /************************************************************************************************
  * .text
@@ -226,7 +226,10 @@ handlers:
  *      We are in handler mode and the current SP is the MSP
  */
 
-lpc17_common:
+	.globl		exception_common
+	.type		exception_common, function
+
+exception_common:
 
 	/* Complete the context save */
 
diff --git a/nuttx/arch/arm/src/sam34/sam_irq.c b/nuttx/arch/arm/src/sam34/sam_irq.c
index 0a868530e..e2117ff09 100644
--- a/nuttx/arch/arm/src/sam34/sam_irq.c
+++ b/nuttx/arch/arm/src/sam34/sam_irq.c
@@ -74,6 +74,8 @@
 
 volatile uint32_t *current_regs;
 
+extern uint32_t _vectors[];
+
 /****************************************************************************
  * Private Data
  ****************************************************************************/
@@ -345,7 +347,7 @@ void up_irqinitialize(void)
 #if defined(CONFIG_ARCH_RAMVECTORS)
   up_ramvec_initialize();
 #elif defined(CONFIG_SAM_BOOTLOADER)
-  putreg32((uint32_t)sam_vectors, NVIC_VECTAB);
+  putreg32((uint32_t)_vectors, NVIC_VECTAB);
 #endif
 
   /* Set all interrupts (and exceptions) to the default priority */
diff --git a/nuttx/arch/arm/src/sam34/sam_vectors.S b/nuttx/arch/arm/src/sam34/sam_vectors.S
index 97e144388..4631ad13e 100644
--- a/nuttx/arch/arm/src/sam34/sam_vectors.S
+++ b/nuttx/arch/arm/src/sam34/sam_vectors.S
@@ -120,7 +120,7 @@
 	.thumb_func
 \label:
 	mov		r0, #\irqno
-	b		sam_common
+	b		exception_common
 	.endm
 
 /************************************************************************************************
@@ -130,10 +130,10 @@
 	.section	.vectors, "ax"
 	.code		16
 	.align		2
-	.globl		sam_vectors
-	.type		sam_vectors, function
+	.globl		_vectors
+	.type		_vectors, function
 
-sam_vectors:
+_vectors:
 
 /* Processor Exceptions */
 
@@ -174,7 +174,7 @@ sam_vectors:
 #  error Unrecognized SAM architecture
 #endif
 
-	.size	sam_vectors, .-sam_vectors
+	.size	_vectors, .-_vectors
 
 /************************************************************************************************
  * .text
@@ -231,7 +231,10 @@ handlers:
  *      We are in handler mode and the current SP is the MSP
  */
 
-sam_common:
+	.globl		exception_common
+	.type		exception_common, function
+
+exception_common:
 
 	/* Complete the context save */
 
diff --git a/nuttx/arch/arm/src/stm32/stm32_irq.c b/nuttx/arch/arm/src/stm32/stm32_irq.c
index 9c74377dc..e3fae743b 100644
--- a/nuttx/arch/arm/src/stm32/stm32_irq.c
+++ b/nuttx/arch/arm/src/stm32/stm32_irq.c
@@ -95,7 +95,7 @@ static void stm32_dumpnvic(const char *msg, int irq)
 
   flags = irqsave();
   lldbg("NVIC (%s, irq=%d):\n", msg, irq);
-  lldbg("  INTCTRL:    %08x VECTAB: %08x\n",
+  lldbg("  INTCTRL:    %08x VECTAB:  %08x\n",
         getreg32(NVIC_INTCTRL), getreg32(NVIC_VECTAB));
 #if 0
   lldbg("  SYSH ENABLE MEMFAULT: %08x BUSFAULT: %08x USGFAULT: %08x SYSTICK: %08x\n",
@@ -151,7 +151,7 @@ static int stm32_nmi(int irq, FAR void *context)
 static int stm32_busfault(int irq, FAR void *context)
 {
   (void)irqsave();
-  dbg("PANIC!!! Bus fault recived\n");
+  dbg("PANIC!!! Bus fault received: %08x\n", getreg32(NVIC_CFAULTS));
   PANIC();
   return 0;
 }
@@ -159,7 +159,7 @@ static int stm32_busfault(int irq, FAR void *context)
 static int stm32_usagefault(int irq, FAR void *context)
 {
   (void)irqsave();
-  dbg("PANIC!!! Usage fault received\n");
+  dbg("PANIC!!! Usage fault received: %08x\n", getreg32(NVIC_CFAULTS));
   PANIC();
   return 0;
 }
@@ -321,7 +321,7 @@ void up_irqinitialize(void)
 #if defined(CONFIG_ARCH_RAMVECTORS)
   up_ramvec_initialize();
 #elif defined(CONFIG_STM32_DFU)
-  putreg32((uint32_t)stm32_vectors, NVIC_VECTAB);
+  putreg32((uint32_t)_vectors, NVIC_VECTAB);
 #endif
 
   /* Set all interrupts (and exceptions) to the default priority */
diff --git a/nuttx/arch/arm/src/stm32/stm32_rcc.h b/nuttx/arch/arm/src/stm32/stm32_rcc.h
index 76c47680e..813b9b22d 100644
--- a/nuttx/arch/arm/src/stm32/stm32_rcc.h
+++ b/nuttx/arch/arm/src/stm32/stm32_rcc.h
@@ -83,7 +83,7 @@ extern "C"
  * and we will need to set the NVIC vector location to this alternative location.
  */
 
-extern uint32_t stm32_vectors[];  /* See stm32_vectors.S */
+extern uint32_t _vectors[];  /* See stm32_vectors.S */
 
 /************************************************************************************
  * Inline Functions
diff --git a/nuttx/arch/arm/src/stm32/stm32_vectors.S b/nuttx/arch/arm/src/stm32/stm32_vectors.S
index e6e6d31dd..00f4ebf59 100644
--- a/nuttx/arch/arm/src/stm32/stm32_vectors.S
+++ b/nuttx/arch/arm/src/stm32/stm32_vectors.S
@@ -127,7 +127,7 @@
 	.thumb_func
 \label:
 	mov		r0, #\irqno
-	b		stm32_common
+	b		exception_common
 	.endm
 
 /************************************************************************************
@@ -137,10 +137,10 @@
 	.section	.vectors, "ax"
 	.code		16
 	.align		2
-	.globl		stm32_vectors
-	.type		stm32_vectors, function
+	.globl		_vectors
+	.type		_vectors, function
 
-stm32_vectors:
+_vectors:
 
 /* Processor Exceptions */
 
@@ -182,7 +182,7 @@ stm32_vectors:
 #else
 #  error "No vectors for STM32 chip"
 #endif
-	.size	stm32_vectors, .-stm32_vectors
+	.size	_vectors, .-_vectors
 
 /************************************************************************************
  * .text
@@ -241,7 +241,10 @@ handlers:
  *      We are in handler mode and the current SP is the MSP
  */
 
-stm32_common:
+	.globl		exception_common
+	.type		exception_common, function
+
+exception_common:
 
 	/* Complete the context save */
 
diff --git a/nuttx/configs/viewtool-stm32f107/highpri/Make.defs b/nuttx/configs/viewtool-stm32f107/highpri/Make.defs
index d07b87dd8..251118cf3 100644
--- a/nuttx/configs/viewtool-stm32f107/highpri/Make.defs
+++ b/nuttx/configs/viewtool-stm32f107/highpri/Make.defs
@@ -38,9 +38,9 @@ include ${TOPDIR}/tools/Config.mk
 include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
 
 ifeq ($(CONFIG_STM32_DFU),y)
-  LDSCRIPT = cmndfu.ld
+  LDSCRIPT = dfu.ld
 else
-  LDSCRIPT = cmnflash.ld
+  LDSCRIPT = flash.ld
 endif
 
 ifeq ($(WINTOOL),y)
diff --git a/nuttx/configs/viewtool-stm32f107/scripts/cmndfu.ld b/nuttx/configs/viewtool-stm32f107/scripts/cmndfu.ld
deleted file mode 100644
index 8d8434606..000000000
--- a/nuttx/configs/viewtool-stm32f107/scripts/cmndfu.ld
+++ /dev/null
@@ -1,112 +0,0 @@
-/****************************************************************************
- * configs/viewtool-stm32f107/scripts/cmndfu.ld
- *
- *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * 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.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * 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 OWNER 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.
- *
- ****************************************************************************/
-
-MEMORY
-{
-    flash (rx) : ORIGIN = 0x08003000, LENGTH = 208K
-    sram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
-}
-
-OUTPUT_ARCH(arm)
-EXTERN(_vectors)
-ENTRY(_stext)
-SECTIONS
-{
-	.text : {
-		_stext = ABSOLUTE(.);
-		*(.vectors)
-		*(.text .text.*)
-		*(.fixup)
-		*(.gnu.warning)
-		*(.rodata .rodata.*)
-		*(.gnu.linkonce.t.*)
-		*(.glue_7)
-		*(.glue_7t)
-		*(.got)
-		*(.gcc_except_table)
-		*(.gnu.linkonce.r.*)
-		_etext = ABSOLUTE(.);
-	} > flash
-
-	.init_section : {
-		_sinit = ABSOLUTE(.);
-		*(.init_array .init_array.*)
-		_einit = ABSOLUTE(.);
-	} > flash
-
-	.ARM.extab : {
-		*(.ARM.extab*)
-	} > flash
-
-	__exidx_start = ABSOLUTE(.);
-	.ARM.exidx : {
-		*(.ARM.exidx*)
-	} > flash
-	__exidx_end = ABSOLUTE(.);
-
-	_eronly = ABSOLUTE(.);
-
-	/* The STM32F103Z has 64Kb of SRAM beginning at the following address */
-
-	.data : {
-		_sdata = ABSOLUTE(.);
-		*(.data .data.*)
-		*(.gnu.linkonce.d.*)
-		CONSTRUCTORS
-		_edata = ABSOLUTE(.);
-	} > sram AT > flash
-
-	.bss : {
-		_sbss = ABSOLUTE(.);
-		*(.bss .bss.*)
-		*(.gnu.linkonce.b.*)
-		*(COMMON)
-		_ebss = ABSOLUTE(.);
-	} > sram
-
-	/* Stabs debugging sections. */
-	.stab 0 : { *(.stab) }
-	.stabstr 0 : { *(.stabstr) }
-	.stab.excl 0 : { *(.stab.excl) }
-	.stab.exclstr 0 : { *(.stab.exclstr) }
-	.stab.index 0 : { *(.stab.index) }
-	.stab.indexstr 0 : { *(.stab.indexstr) }
-	.comment 0 : { *(.comment) }
-	.debug_abbrev 0 : { *(.debug_abbrev) }
-	.debug_info 0 : { *(.debug_info) }
-	.debug_line 0 : { *(.debug_line) }
-	.debug_pubnames 0 : { *(.debug_pubnames) }
-	.debug_aranges 0 : { *(.debug_aranges) }
-}
diff --git a/nuttx/configs/viewtool-stm32f107/scripts/cmnflash.ld b/nuttx/configs/viewtool-stm32f107/scripts/cmnflash.ld
deleted file mode 100644
index c467cb64c..000000000
--- a/nuttx/configs/viewtool-stm32f107/scripts/cmnflash.ld
+++ /dev/null
@@ -1,113 +0,0 @@
-/****************************************************************************
- * configs/viewtool-stm32f107/scripts/cmnflash.ld
- *
- *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * 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.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * 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 OWNER 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.
- *
- ****************************************************************************/
-
-MEMORY
-{
-	flash (rx) : ORIGIN = 0x08000000, LENGTH = 256K
-	sram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
-
-}
-
-OUTPUT_ARCH(arm)
-EXTERN(_vectors)
-ENTRY(_stext)
-SECTIONS
-{
-	.text : {
-		_stext = ABSOLUTE(.);
-		*(.vectors)
-		*(.text .text.*)
-		*(.fixup)
-		*(.gnu.warning)
-		*(.rodata .rodata.*)
-		*(.gnu.linkonce.t.*)
-		*(.glue_7)
-		*(.glue_7t)
-		*(.got)
-		*(.gcc_except_table)
-		*(.gnu.linkonce.r.*)
-		_etext = ABSOLUTE(.);
-	} > flash
-
-	.init_section : {
-		_sinit = ABSOLUTE(.);
-		*(.init_array .init_array.*)
-		_einit = ABSOLUTE(.);
-	} > flash
-
-	.ARM.extab : {
-		*(.ARM.extab*)
-	} > flash
-
-	__exidx_start = ABSOLUTE(.);
-	.ARM.exidx : {
-		*(.ARM.exidx*)
-	} > flash
-	__exidx_end = ABSOLUTE(.);
-
-	_eronly = ABSOLUTE(.);
-
-	/* The STM32F107VC has 64Kb of SRAM beginning at the following address */
-
-	.data : {
-		_sdata = ABSOLUTE(.);
-		*(.data .data.*)
-		*(.gnu.linkonce.d.*)
-		CONSTRUCTORS
-		_edata = ABSOLUTE(.);
-	} > sram AT > flash
-
-	.bss : {
-		_sbss = ABSOLUTE(.);
-		*(.bss .bss.*)
-		*(.gnu.linkonce.b.*)
-		*(COMMON)
-		_ebss = ABSOLUTE(.);
-	} > sram
-
-	/* Stabs debugging sections. */
-	.stab 0 : { *(.stab) }
-	.stabstr 0 : { *(.stabstr) }
-	.stab.excl 0 : { *(.stab.excl) }
-	.stab.exclstr 0 : { *(.stab.exclstr) }
-	.stab.index 0 : { *(.stab.index) }
-	.stab.indexstr 0 : { *(.stab.indexstr) }
-	.comment 0 : { *(.comment) }
-	.debug_abbrev 0 : { *(.debug_abbrev) }
-	.debug_info 0 : { *(.debug_info) }
-	.debug_line 0 : { *(.debug_line) }
-	.debug_pubnames 0 : { *(.debug_pubnames) }
-	.debug_aranges 0 : { *(.debug_aranges) }
-}
diff --git a/nuttx/configs/viewtool-stm32f107/scripts/dfu.ld b/nuttx/configs/viewtool-stm32f107/scripts/dfu.ld
index 2a7e74664..2658216b1 100644
--- a/nuttx/configs/viewtool-stm32f107/scripts/dfu.ld
+++ b/nuttx/configs/viewtool-stm32f107/scripts/dfu.ld
@@ -40,6 +40,7 @@ MEMORY
 }
 
 OUTPUT_ARCH(arm)
+EXTERN(_vectors)
 ENTRY(_stext)
 SECTIONS
 {
@@ -77,7 +78,11 @@ SECTIONS
 
 	_eronly = ABSOLUTE(.);
 
-	/* The STM32F103Z has 64Kb of SRAM beginning at the following address */
+	/* The RAM vector table (if present) should lie at the beginning of SRAM */
+
+	.ram_vectors : {
+		*(.ram_vectors)
+	} > sram
 
 	.data : {
 		_sdata = ABSOLUTE(.);
diff --git a/nuttx/configs/viewtool-stm32f107/scripts/flash.ld b/nuttx/configs/viewtool-stm32f107/scripts/flash.ld
index 65dd41bfc..8b6d9332a 100644
--- a/nuttx/configs/viewtool-stm32f107/scripts/flash.ld
+++ b/nuttx/configs/viewtool-stm32f107/scripts/flash.ld
@@ -37,10 +37,10 @@ MEMORY
 {
 	flash (rx) : ORIGIN = 0x08000000, LENGTH = 256K
 	sram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
-
 }
 
 OUTPUT_ARCH(arm)
+EXTERN(_vectors)
 ENTRY(_stext)
 SECTIONS
 {
@@ -78,7 +78,11 @@ SECTIONS
 
 	_eronly = ABSOLUTE(.);
 
-	/* The STM32F107VC has 64Kb of SRAM beginning at the following address */
+	/* The RAM vector table (if present) should lie at the beginning of SRAM */
+
+	.ram_vectors : {
+		*(.ram_vectors)
+	} > sram
 
 	.data : {
 		_sdata = ABSOLUTE(.);