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#include <arch/x86/include/cpufunc.h>
#include <sys/lwp.h>
#include <sys/lockdebug.h>
#include <sys/lockdoc.h>
#ifdef LOCKDOC
struct log_action la_buffer;
int32_t lockdoc_get_ctx(void) {
if (curlwp == NULL) {
return 0;
} else if (curlwp->l_pflag & LP_INTR) {
return -1;
} else {
return curlwp->l_lid;
}
}
void lockdoc_send_current_task_addr(void) {
u_long flags;
flags = lockdoc_x86_disable_intr();
memset(&la_buffer,0,sizeof(la_buffer));
la_buffer.action = LOCKDOC_CURRENT_TASK;
la_buffer.ptr = (uint32_t)((uint32_t)curcpu()->ci_self + offsetof(struct cpu_info, ci_curlwp));
outb_(PING_CHAR,IO_PORT_LOG);
lockdoc_x86_restore_intr(flags);
}
void lockdoc_send_lwp_flag_offset(void) {
u_long flags;
flags = lockdoc_x86_disable_intr();
memset(&la_buffer,0,sizeof(la_buffer));
la_buffer.action = LOCKDOC_LWP_FLAG_OFFSET;
la_buffer.ptr = offsetof(struct lwp, l_pflag);
outb_(PING_CHAR,IO_PORT_LOG);
lockdoc_x86_restore_intr(flags);
}
void lockdoc_send_pid_offset(void) {
u_long flags;
flags = lockdoc_x86_disable_intr();
memset(&la_buffer,0,sizeof(la_buffer));
la_buffer.action = LOCKDOC_PID_OFFSET;
la_buffer.ptr = offsetof(struct lwp, l_lid);
outb_(PING_CHAR,IO_PORT_LOG);
lockdoc_x86_restore_intr(flags);
}
void lockdoc_send_kernel_version(void) {
u_long flags;
flags = lockdoc_x86_disable_intr();
memset(&la_buffer,0,sizeof(la_buffer));
snprintf((char*)&la_buffer.type, LOG_CHAR_BUFFER_LEN, "%s", "notimplemented"); // TODO Implement
la_buffer.action = LOCKDOC_KERNEL_VERSION;
outb_(PING_CHAR,IO_PORT_LOG);
lockdoc_x86_restore_intr(flags);
}
void trace_irqs_on(struct trapframe *frame) {
u_long cur_eflags;
cur_eflags = x86_read_flags();
if ((frame->tf_eflags & (1 << 9)) && !(cur_eflags & (1 << 9))) {
#ifdef DEBUG_TRAPS
lockdoc_log_lock(V_WRITE, (struct lock_object*)PSEUDOLOCK_ADDR_HARDIRQ, __FILE__, __LINE__, frame->tf_trapno);
#else
lockdoc_log_lock(V_WRITE, (struct lock_object*)PSEUDOLOCK_ADDR_HARDIRQ, __FILE__, __LINE__, LOCK_NONE);
#endif
}
}
void trace_irqs_off(struct trapframe *frame) {
u_long cur_eflags;
cur_eflags = x86_read_flags();
if ((frame->tf_eflags & (1 << 9)) && !(cur_eflags & (1 << 9))) {
#ifdef DEBUG_TRAPS
lockdoc_log_lock(P_WRITE, (struct lock_object*)PSEUDOLOCK_ADDR_HARDIRQ, __FILE__, __LINE__, frame->tf_trapno);
#else
lockdoc_log_lock(P_WRITE, (struct lock_object*)PSEUDOLOCK_ADDR_HARDIRQ, __FILE__, __LINE__, LOCK_NONE);
#endif
}
}
void __x86_disable_intr(const char *file, int line, const char *func){
u_long eflags;
eflags = x86_read_flags();
if (eflags & (1 << 9)){ // Check if interrupts were enabled in the first place
lockdoc_log_lock(P_WRITE, (void*)PSEUDOLOCK_ADDR_HARDIRQ, file, line, LOCK_NONE);
}
lockdoc_x86_disable_intr();
}
u_long lockdoc_x86_disable_intr(void){
u_long eflags;
eflags = x86_read_flags();
__asm volatile ("cli" ::: "memory");
return eflags;
}
void __x86_enable_intr(const char *file, int line, const char *func){
u_long eflags;
eflags = x86_read_flags();
if (!(eflags & (1 << 9))){ // Check if interrupts were disabled in the first place
lockdoc_log_lock(V_WRITE, (void*)PSEUDOLOCK_ADDR_HARDIRQ, file, line, LOCK_NONE);
}
lockdoc_x86_enable_intr();
}
u_long lockdoc_x86_enable_intr(void){
u_long eflags;
eflags = x86_read_flags();
__asm volatile ("sti" ::: "memory");
return eflags;
}
void lockdoc_x86_restore_intr(u_long eflags){
x86_write_flags(eflags);
}
#endif /* LOCKDOC */
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