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Added usermode interrupt handling

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This commit is contained in:
Nathan Giddings
2022-12-21 11:37:13 -06:00
parent 590290f92b
commit 166841da51
5 changed files with 175 additions and 50 deletions
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26
include/kernel.h
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@@ -22,6 +22,8 @@
#define IO_PORT 1 << 1
#define IO_MAILBOX 2 << 1
typedef unsigned long (*signal_handler_t)(void*, void*);
struct process_context_t;
struct module_t
@@ -73,10 +75,24 @@ struct port_t
unsigned long owner_pid;
};
struct signal_action_t
{
unsigned long pid;
signal_handler_t func_ptr;
void (*trampoline_ptr)();
void *userdata;
};
struct signal_context_t
{
unsigned long signal_id;
};
struct kernel_t
{
struct syscall_t syscall_table[MAX_SYSCALL_ID];
struct priority_queue_t priority_queue;
struct avltree_t *interrupt_handlers;
struct avltree_t *port_table;
struct avltree_t *process_table;
struct process_t *active_process;
@@ -111,10 +127,16 @@ unsigned long kernel_get_port_owner(unsigned long id);
enum error_t kernel_send_message(unsigned long recipient, struct message_t *message);
enum error_t kernel_queue_sender(unsigned long recipient);
enum error_t kernel_queue_message(unsigned long recipient, struct message_t *message);
enum error_t kernel_register_interrupt_handler(unsigned long interrupt, signal_handler_t handler, void *userdata);
enum error_t kernel_remove_interrupt_handler(unsigned long interrupt);
enum error_t kernel_execute_interrupt_handler(unsigned long interrupt);
enum error_t kernel_signal_return();
int receive_message(struct message_t *buffer, int flags);
void panic(const char *message) __attribute__ ((noreturn));

16
include/platform/context.h
View File

@@ -33,12 +33,28 @@ struct process_context_t
void load_context(struct process_context_t *context);
void *get_context_pc(struct process_context_t *context);
void set_context_pc(struct process_context_t *context, void *pc);
void *get_context_stack(struct process_context_t *context);
void set_context_stack(struct process_context_t *context, void *stack);
void set_context_flags(struct process_context_t *context, unsigned long flags);
void set_context_return(struct process_context_t *context, unsigned long value);
void *context_stack_push(struct process_context_t *context, unsigned long value);
void *context_stack_push_struct(struct process_context_t *context, void *data, unsigned long size);
void *context_stack_pop(struct process_context_t *context, void *value);
void *context_stack_pop_struct(struct process_context_t *context, void *value, unsigned long size);
void context_call_func(struct process_context_t *context, void *func_ptr, void *ret_ptr, int argc, ...);
void context_cleanup_func(struct process_context_t *context, int argc);
#endif