forked from Imagelibrary/rtems
7ee5931393
The aim of this clock driver hook was to stop clock tick interrupts at some late point in the exit() procedure. The use of atexit() pulls in malloc() which pulls in errno. It is incompatible with the intention of the CONFIGURE_DISABLE_NEWLIB_REENTRANCY configuration option. The exit() function must be called from thread context, so accompanied clock tick interrupts should cause no harm. On the contrary, someone may assume a normal operating system operation, e.g. working timeouts. Remove the Clock_driver_support_shutdown_hardware() clock driver hook. Close #3436.
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
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* COPYRIGHT (c) 1989-2013.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <bsp.h>
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#include <bsp/irq.h>
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#include <bspopts.h>
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/* XXX convert to macros? Move to score/cpu? */
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void mips_set_timer(uint32_t timer_clock_interval);
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uint32_t mips_get_timer(void);
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/* XXX move to BSP.h or irq.h?? */
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#define EXT_INT5 0x8000 /* external interrupt 5 */
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#define CLOCK_VECTOR_MASK EXT_INT5
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#define CLOCK_VECTOR (MIPS_INTERRUPT_BASE+0x7)
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extern uint32_t bsp_clicks_per_microsecond;
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static uint32_t mips_timer_rate = 0;
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/* refresh the internal CPU timer */
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#define Clock_driver_support_at_tick() \
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mips_set_timer( mips_timer_rate );
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#define Clock_driver_support_install_isr( _new ) \
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rtems_interrupt_handler_install(CLOCK_VECTOR, "PIT clock",0, _new, NULL)
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#define Clock_driver_support_initialize_hardware() \
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do { \
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mips_timer_rate = rtems_configuration_get_microseconds_per_tick() * \
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bsp_clicks_per_microsecond; \
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mips_set_timer( mips_timer_rate ); \
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mips_enable_in_interrupt_mask(CLOCK_VECTOR_MASK); \
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} while(0)
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#define CLOCK_DRIVER_USE_DUMMY_TIMECOUNTER
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#include "../../../shared/dev/clock/clockimpl.h"
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