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author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-09-21 17:10:15 +0000 |
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committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2011-09-21 17:10:15 +0000 |
commit | ae42ff1857ee56d67feca50d379c5f4b66d7fe69 (patch) | |
tree | ceeb4e3289274bcf92fd4f891c0b3fb1a3894a35 /os/ports/GCC | |
parent | 95713cae20050dd58b41f52edead1b05c1c982a2 (diff) | |
download | ChibiOS-ae42ff1857ee56d67feca50d379c5f4b66d7fe69.tar.gz ChibiOS-ae42ff1857ee56d67feca50d379c5f4b66d7fe69.tar.bz2 ChibiOS-ae42ff1857ee56d67feca50d379c5f4b66d7fe69.zip |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3377 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/ports/GCC')
-rw-r--r-- | os/ports/GCC/ARMCMx/port.dox | 49 |
1 files changed, 30 insertions, 19 deletions
diff --git a/os/ports/GCC/ARMCMx/port.dox b/os/ports/GCC/ARMCMx/port.dox index 13ab36d8a..709332a6b 100644 --- a/os/ports/GCC/ARMCMx/port.dox +++ b/os/ports/GCC/ARMCMx/port.dox @@ -70,8 +70,7 @@ * not globally masked but only interrupts with higher priority can preempt
* the current handler. The processor is running in exception-privileged
* mode.
- * - <b>Serving Fast Interrupt</b>. This state is not implemented in the
- * ARMv6-M implementation.
+ * - <b>Serving Fast Interrupt</b>. Not implemented in compact kernel mode.
* - <b>Serving Non-Maskable Interrupt</b>. The Cortex-Mx has a specific
* asynchronous NMI vector and several synchronous fault vectors that can
* be considered belonging to this category.
@@ -109,9 +108,13 @@ * not globally masked but only interrupts with higher priority can preempt
* the current handler. The processor is running in exception-privileged
* mode.
- * - <b>Serving Fast Interrupt</b>. It is basically the same of the SRI state
- * but it is not possible to switch to the I-Locked state because fast
- * interrupts can preempt the kernel critical zone.
+ * - <b>Serving Fast Interrupt</b>. Fast interrupts are defined as interrupt
+ * sources having higher priority level than the kernel
+ * (@p CORTEX_BASEPRI_KERNEL). In this state is not possible to switch to
+ * the I-Locked state because fast interrupts can preempt the kernel
+ * critical zone.<br>
+ * This state is not implemented in the ARMv6-M implementation because
+ * priority masking is not present in this architecture.
* - <b>Serving Non-Maskable Interrupt</b>. The Cortex-Mx has a specific
* asynchronous NMI vector and several synchronous fault vectors that can
* be considered belonging to this category.
@@ -214,20 +217,28 @@ * @section ARMCMx_STARTUP_2 Expected linker symbols
* The startup code starts at the symbol @p ResetHandler and expects the
* following symbols to be defined in the linker script:
- * - @p __ram_end__ End of RAM.
- * - @p __main_stack_base__ Main stack lower boundary.
- * - @p __main_stack_end__ Main stack initial position.
- * - @p __process_stack_base__ Process stack lower boundary.
- * - @p __process_stack_end__ Process stack initial position.
- * - @p _textdata Address of the data segment source read only data.
- * - @p _data Start of the data segment.
- * - @p _edata End of the data segment end location.
- * - @p _bss_start Start of the BSS.
- * - @p _bss_end End of the BSS segment.
- * - @p __init_array_start Start of the constructors array.
- * - @p __init_array_end End of the constructors array.
- * - @p __fini_array_start Start of the destructors array.
- * - @p __fini_array_end End of the destructors array.
+ * - @p __ram_end__, end of RAM.
+ * - @p __main_stack_base__, main stack lower boundary.
+ * - @p __main_stack_end__, main stack initial position.
+ * - @p __process_stack_base__, process stack lower boundary.
+ * - @p __process_stack_end__, process stack initial position.
+ * - @p _textdata, address of the data segment source read only data.
+ * - @p _data, start of the data segment.
+ * - @p _edata, end of the data segment end location.
+ * - @p _bss_start, start of the BSS.
+ * - @p _bss_end, end of the BSS segment.
+ * - @p __init_array_start, start of the constructors array.
+ * - @p __init_array_end, end of the constructors array.
+ * - @p __fini_array_start, start of the destructors array.
+ * - @p __fini_array_end, end of the destructors array.
+ * .
+ * Additionally the kernel expects the following symbols:
+ * - @p __main_thread_stack_base__, this symbol is required when the
+ * stack checking is enabled (<tt>CH_DBG_ENABLE_STACK_CHECK==TRUE</tt>),
+ * it is an alias of @p __process_stack_base__ in this port.
+ * - @p __heap_base__ and @p __heap_end__, those symbols are required
+ * if the memory core manager is enabled (<tt>CH_USE_MEMCORE==TRUE</tt>)
+ * with a default core size set to zero (<tt>CH_MEMCORE_SIZE==0</tt>).
* .
* @ingroup ARMCMx
*/
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