Dokumentation

Functions
context.cc File Reference
#include "machine/context.h"
#include "debug/assert.h"
#include "debug/kernelpanic.h"
+ Include dependency graph for context.cc:

Functions

void context_go ()
 Helper function to prepare parameters for Thread::kickoff.
 
static void panic ()
 Panic function.
 
void * prepareContext (void *tos, void(*kickoff)(void *), void *param1)
 Prepares a context for its first activation.
 

Function Documentation

void context_go ( )

Helper function to prepare parameters for Thread::kickoff.

This function will copy the first parameter for the kickoff function from the non-scratch register r15 into the register rdi (which is the first parameter according to the SystemV ABI).

context_switch jumps to this function on the first execution of a new context. The value mentioned above was placed on the stack by prepareContext during initialization and loaded into the register r15 while restoring the context in context_switch.

static void panic ( )
static

Panic function.

If the kickoff function (assigned in prepareContext) returns, this parameterless function will be called – and stop the execution.