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Implemented do_syscall()

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Wrote constructor for kernel state
Added syscall table
This commit is contained in:
ngiddings
2021-04-19 06:54:34 -05:00
parent 755f2a3d69
commit a5e9d852ab
2 changed files with 34 additions and 2 deletions
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14
include/kernel.h
View File

@@ -5,13 +5,19 @@
#include "resource.h" #include "resource.h"
#include "module.h" #include "module.h"
#include "process.h" #include "process.h"
#include "memorymap.h"
#include <stddef.h> #include <stddef.h>
enum syscall_id_t enum syscall_id_t
{ {
SYSCALL_YIELD = 1 SYSCALL_TEST = 1,
SYSCALL_YIELD,
SYSCALL_MMAP,
SYSCALL_MUNMAP
}; };
typedef size_t (*syscall_t)(struct kernel_t*, size_t, size_t, size_t);
struct kernel_t struct kernel_t
{ {
struct page_stack_t *page_stack; struct page_stack_t *page_stack;
@@ -20,8 +26,14 @@ struct kernel_t
struct resource_table_t *resource_table; struct resource_table_t *resource_table;
}; };
extern syscall_t syscall_table[32];
extern struct kernel_t kernel_state; extern struct kernel_t kernel_state;
void construct_kernel_state(struct kernel_t *kernel, struct page_stack_t *page_stack,
struct priority_queue_t *priority_queue, struct resource_table_t *resource_table,
size_t module_count, struct module_t *module_list);
size_t do_syscall(struct kernel_t *kernel, enum syscall_id_t id, size_t arg1, size_t arg2, size_t arg3); size_t do_syscall(struct kernel_t *kernel, enum syscall_id_t id, size_t arg1, size_t arg2, size_t arg3);
int load_module(struct kernel_t *kernel, struct module_t *module); int load_module(struct kernel_t *kernel, struct module_t *module);

22
src/kernel.c
View File

@@ -5,9 +5,29 @@
#include "context.h" #include "context.h"
#include "types/status.h" #include "types/status.h"
syscall_t syscall_table[32];
void construct_kernel_state(struct kernel_t *kernel, struct page_stack_t *page_stack,
struct priority_queue_t *priority_queue, struct resource_table_t *resource_table,
size_t module_count, struct module_t *module_list)
{
kernel->page_stack = page_stack;
kernel->resource_table = resource_table;
kernel->priority_queue = priority_queue;
kernel->active_process = NULL;
for(int i = 0; i < module_count; i++)
{
load_module(&kernel_state, &module_list[i]);
}
}
size_t do_syscall(struct kernel_t *kernel, enum syscall_id_t id, size_t arg1, size_t arg2, size_t arg3) size_t do_syscall(struct kernel_t *kernel, enum syscall_id_t id, size_t arg1, size_t arg2, size_t arg3)
{ {
if(syscall_table[id] == NULL)
{
return S_BAD_SYSCALL;
}
return syscall_table[id](kernel, arg1, arg2, arg3);
} }
int load_module(struct kernel_t *kernel, struct module_t *module) int load_module(struct kernel_t *kernel, struct module_t *module)