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add generic system call forwarding

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This commit is contained in:
NAKAMURA Gou
2013-04-17 20:26:19 +09:00
parent d55bc511ea
commit e09160cce7
11 changed files with 212 additions and 17 deletions
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36
kernel/process.c
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@@ -140,6 +140,14 @@ int add_process_large_range(struct process *process,
int npages_allocated = 0;
void *virt;
if ((start < process->vm->region.user_start)
|| (process->vm->region.user_end < end)) {
kprintf("large range(%#lx - %#lx) is not in user avail(%#lx - %#lx)\n",
start, end, process->vm->region.user_start,
process->vm->region.user_end);
return -EINVAL;
}
range = kmalloc(sizeof(struct vm_range), 0);
if (!range) {
return -ENOMEM;
@@ -194,6 +202,14 @@ int add_process_memory_range(struct process *process,
{
struct vm_range *range;
if ((start < process->vm->region.user_start)
|| (process->vm->region.user_end < end)) {
kprintf("range(%#lx - %#lx) is not in user avail(%#lx - %#lx)\n",
start, end, process->vm->region.user_start,
process->vm->region.user_end);
return -EINVAL;
}
range = kmalloc(sizeof(struct vm_range), 0);
if (!range) {
return -ENOMEM;
@@ -239,16 +255,15 @@ void init_process_stack(struct process *process, struct program_load_desc *pn,
{
int s_ind = 0;
int arg_ind;
unsigned long size = USER_STACK_NR_PAGES * PAGE_SIZE;
char *stack = ihk_mc_alloc_pages(USER_STACK_NR_PAGES, 0);
unsigned long *p = (unsigned long *)(stack +
(USER_STACK_NR_PAGES * PAGE_SIZE));
unsigned long *p = (unsigned long *)(stack + size);
unsigned long end = process->vm->region.user_end;
unsigned long start = end - size;
memset(stack, 0, USER_STACK_NR_PAGES * PAGE_SIZE);
memset(stack, 0, size);
add_process_memory_range(process, USER_END -
(USER_STACK_NR_PAGES * PAGE_SIZE),
USER_END,
virt_to_phys(stack), VR_STACK);
add_process_memory_range(process, start, end, virt_to_phys(stack), VR_STACK);
s_ind = -1;
p[s_ind--] = 0; /* AT_NULL */
@@ -274,10 +289,9 @@ void init_process_stack(struct process *process, struct program_load_desc *pn,
p[s_ind] = argc;
ihk_mc_modify_user_context(process->uctx, IHK_UCR_STACK_POINTER,
USER_END + sizeof(unsigned long) * s_ind);
process->vm->region.stack_end = USER_END;
process->vm->region.stack_start = USER_END -
(USER_STACK_NR_PAGES * PAGE_SIZE);
end + sizeof(unsigned long) * s_ind);
process->vm->region.stack_end = end;
process->vm->region.stack_start = start;
}