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/*
* Copyright (c) 2015 Chris Johns <chrisj@rtems.org>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems.h>
#include <rtems/trace/rtems-trace-buffer-vars.h>
/**
* External Trace Linker and TBG data. We provide weak versions to allow us to
* link and be present in an application that has not been trace linked.
*/
/*
* Trace linker data.
*/
uint32_t __rtld_trace_names_size __attribute__ ((weak));
const char *const __rtld_trace_names[1] __attribute__ ((weak));
uint32_t __rtld_trace_enables_size __attribute__ ((weak));
const uint32_t __rtld_trace_enables[1] __attribute__ ((weak));
uint32_t __rtld_trace_triggers_size __attribute__ ((weak));
const uint32_t __rtld_trace_triggers[1] __attribute__ ((weak));
const __rtld_trace_sig __rtld_trace_signatures[1] __attribute__ ((weak));
/*
* Trace buffer generator data.
*/
const bool __rtld_tbg_present __attribute__ ((weak));
const uint32_t __rtld_tbg_mode __attribute__ ((weak));
const uint32_t __rtld_tbg_buffer_size __attribute__ ((weak));
uint32_t __rtld_tbg_buffer[1] __attribute__ ((weak));
volatile uint32_t __rtld_tbg_buffer_in __attribute__ ((weak));
volatile bool __rtld_tbg_finished __attribute__ ((weak));
volatile bool __rtld_tbg_triggered __attribute__ ((weak));
ISR_LOCK_DEFINE (static, __rtld_tbg_lock, "RTLD TBG")
uint32_t
rtems_trace_names_size (void)
{
return __rtld_trace_names_size;
}
const char*
rtems_trace_names (const uint32_t index)
{
return __rtld_trace_names[index];
}
uint32_t
rtems_trace_enables_size (void)
{
return __rtld_trace_enables_size;
}
uint32_t
rtems_trace_enables (const uint32_t index)
{
return __rtld_trace_enables[index];
}
uint32_t
rtems_trace_triggers_size (void)
{
return __rtld_trace_triggers_size;
}
uint32_t
rtems_trace_triggers (const uint32_t index)
{
return __rtld_trace_triggers[index];
}
const rtems_trace_sig*
rtems_trace_signatures (const uint32_t index)
{
return &__rtld_trace_signatures[index];
}
bool
rtems_trace_enable_set(const uint32_t index)
{
return (__rtld_trace_enables[index / 32] & (1 << (index & (32 - 1)))) != 0 ? true : false;
}
bool
rtems_trace_trigger_set(const uint32_t index)
{
return (__rtld_trace_triggers[index / 32] & (1 << (index & (32 - 1)))) != 0 ? true : false;
}
bool
rtems_trace_buffering_present (void)
{
return __rtld_tbg_present;
}
uint32_t
rtems_trace_buffering_mode (void)
{
return __rtld_tbg_mode;
}
uint32_t
rtems_trace_buffering_buffer_size (void)
{
return __rtld_tbg_buffer_size;
}
uint32_t*
rtems_trace_buffering_buffer (void)
{
return &__rtld_tbg_buffer[0];
}
uint32_t
rtems_trace_buffering_buffer_in (void)
{
rtems_interrupt_lock_context lcontext;
uint32_t in;
rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
in = __rtld_tbg_buffer_in;
rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
return in;
}
bool
rtems_trace_buffering_finished (void)
{
rtems_interrupt_lock_context lcontext;
bool finished;
rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
finished = __rtld_tbg_finished;
rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
return finished;
}
bool
rtems_trace_buffering_triggered (void)
{
rtems_interrupt_lock_context lcontext;
bool triggered;
rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
triggered = __rtld_tbg_triggered;
rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
return triggered;
}
void
rtems_trace_buffering_start (void)
{
rtems_interrupt_lock_context lcontext;
rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
__rtld_tbg_triggered = false;
__rtld_tbg_buffer_in = 0;
__rtld_tbg_finished = false;
rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
}
void
rtems_trace_buffering_stop (void)
{
rtems_interrupt_lock_context lcontext;
rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
__rtld_tbg_finished = true;
rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
}
void
rtems_trace_buffering_resume (void)
{
rtems_interrupt_lock_context lcontext;
rtems_interrupt_lock_acquire(&__rtld_tbg_lock, &lcontext);
__rtld_tbg_finished = false;
rtems_interrupt_lock_release(&__rtld_tbg_lock, &lcontext);
}
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