yannick.naumann/RT-Task-Generator-QEMU
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add interrupt injection

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This commit is contained in:
Alwin Berger 2023-01-03 20:09:54 +01:00
parent 4f5bacfbe8
commit 7f19e258a1
2 changed files with 47 additions and 0 deletions
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22
hw/intc/armv7m_nvic.c
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@ -2740,3 +2740,25 @@ static void armv7m_nvic_register_types(void)
} }
type_init(armv7m_nvic_register_types) type_init(armv7m_nvic_register_types)
/* Begin LibAFL instrumentation */
#include "qemu/main-loop.h"
void libafl_send_irq(int irqn);
void libafl_send_irq(int irqn) {
bool haslock = qemu_mutex_iothread_locked();
if (!haslock) {
qemu_mutex_lock_iothread();
}
CPUState *cpu;
CPU_FOREACH(cpu) {
CPUARMState* env = cpu->env_ptr;
NVICState* nvic = env->nvic;
// set_irq_level(nvic, irqn, 1);
// set_irq_level(nvic, irqn, 0);
armv7m_nvic_set_pending(nvic, irqn+16, false);
}
if (!haslock) {
qemu_mutex_unlock_iothread();
}
}
/* End LibAFL instrumentation */

25
hw/timer/armv7m_systick.c
View File

@ -308,3 +308,28 @@ static void armv7m_systick_register_types(void)
} }
type_init(armv7m_systick_register_types) type_init(armv7m_systick_register_types)
/* Begin LibAFL instrumentation */
extern void libafl_send_irq(int irqn);
volatile unsigned int libafl_int_offset = 0;
static ptimer_state* mytimer;
/* This can be moved to a helper function later */
static void libafl_timed_int_hook(void*);
static void libafl_timed_int_hook(void* arg)
{
libafl_send_irq(0);
}
void libafl_start_int_timer( void );
void libafl_start_int_timer( void ) {
if (libafl_int_offset==0) {return;}
if (!mytimer) {
mytimer = ptimer_init(&libafl_timed_int_hook, NULL, 0);
}
ptimer_transaction_begin(mytimer);
ptimer_stop(mytimer);
ptimer_set_period(mytimer, libafl_int_offset);
ptimer_set_count(mytimer, 8);
ptimer_run(mytimer, 1);
ptimer_transaction_commit(mytimer);
}
/* End LibAFL instrumentation */