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Implements support for smaller interrupt tables as described at http://www.nuttx.org/doku.php?id=wiki:howtos:smallvectors . This is largely the work of Mark Schulte. However, I have made several changes to match with the Wiki document. If you like the change, thanks go to Marc. For any errors you can blame me.

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This commit is contained in:
Gregory Nutt
2017-03-03 08:55:16 -06:00
parent eca7ae3043
commit c2b620b4f8
7 changed files with 134 additions and 15 deletions
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22
sched/irq/irq_initialize.c
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@@ -43,11 +43,29 @@
#include "irq/irq.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* This is the number of entries in the interrupt vector table */
#ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
# define TAB_SIZE CONFIG_ARCH_NUSER_INTERRUPTS
#else
# define TAB_SIZE NR_IRQS
#endif
/****************************************************************************
* Public Data
****************************************************************************/
struct irq g_irqvector[NR_IRQS];
/* This is the interrupt vector table */
#ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
struct irq_info_s g_irqvector[CONFIG_ARCH_NUSER_INTERRUPTS];
#else
struct irq_info_s g_irqvector[NR_IRQS];
#endif
/****************************************************************************
* Public Functions
@@ -67,7 +85,7 @@ void irq_initialize(void)
/* Point all interrupt vectors to the unexpected interrupt */
for (i = 0; i < NR_IRQS; i++)
for (i = 0; i < TAB_SIZE; i++)
{
g_irqvector[i].handler = irq_unexpected_isr;
g_irqvector[i].arg = NULL;