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making win+space work when no tasks are running

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This commit is contained in:
Benji Dial 2021-02-17 09:11:39 -05:00
parent 642c3c69a6
commit 49d76d30a5
3 changed files with 64 additions and 55 deletions
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10
src/kernel/paging.c
View file

@ -132,7 +132,8 @@ void init_paging() {
__attribute__ ((pure))
void *vma_to_pma(void *pd, const void *vma) {
return (void *)(((uint32_t *)(((uint32_t *)pd)[(uint32_t)vma >> 22] & PE_ADDR_MASK))[((uint32_t)vma >> 12) % 1024] & PE_ADDR_MASK) + (uint32_t)vma % 4096;
//this is maybe not good - in the case where pd is zero, vma is returned unconsted. hopefully this doesn't become a problem.
return pd ? (void *)(((uint32_t *)(((uint32_t *)pd)[(uint32_t)vma >> 22] & PE_ADDR_MASK))[((uint32_t)vma >> 12) % 1024] & PE_ADDR_MASK) + (uint32_t)vma % 4096 : (void *)(uint32_t)vma;
}
void switch_to_kernel_cr3() {
@ -143,7 +144,8 @@ void switch_to_kernel_cr3() {
}
void switch_to_task_cr3() {
asm volatile (
"mov %0, %%cr3"
: : "a" (active_task->page_directory));
if (active_task->page_directory)
asm volatile (
"mov %0, %%cr3"
: : "a" (active_task->page_directory));
}

12
src/kernel/task.c
View file

@ -86,12 +86,12 @@ void advance_active_task() {
}
void make_sure_tasks() {
for (uint8_t n = 0; n < MAX_TASKS; ++n)
if (tasks[n].page_directory)
return;
logf(LOG_INFO, "No tasks, halting.");
while (1)
asm("hlt");
while (1) {
for (uint8_t n = 0; n < MAX_TASKS; ++n)
if (tasks[n].page_directory)
return;
tmp_halt();
}
}
//IPC stuff isn't fully implemented, or tested in this version.

97
src/kernel/window.c
View file

@ -289,63 +289,70 @@ void on_action(struct window_action packet) {
if (packet.action_type == NOT_READY)
return;
if (top_window) {
if (packet.action_type == KEY_DOWN)
for (uint8_t i = 0; i < N_WM_ACTIONS; ++i)
if (fuzzy_key_match(keybinds[i], packet.as_key)) {
switch_to_kernel_cr3();
struct window *old_top, *old_bottom;
switch (i) {
case WM_SHUFFLE_UP:
if (!top_window->below)
break;
old_top = top_window;
old_bottom = bottom_window;
top_window = old_top->below;
top_window->above = 0;
old_top->below = 0;
old_top->above = old_bottom;
old_bottom->below = old_top;
bottom_window = old_top;
paint_and_above(bottom_window->above);
if (packet.action_type == KEY_DOWN)
for (uint8_t i = 0; i < N_WM_ACTIONS; ++i)
if (fuzzy_key_match(keybinds[i], packet.as_key)) {
switch_to_kernel_cr3();
struct window *old_top, *old_bottom;
switch (i) {
case WM_SHUFFLE_UP:
if (!top_window || !top_window->below)
break;
case WM_SHUFFLE_DOWN:
if (!top_window->below)
break;
old_top = top_window;
old_bottom = bottom_window;
bottom_window = old_bottom->above;
bottom_window->below = 0;
old_bottom->above = 0;
old_bottom->below = old_top;
old_top->above = old_bottom;
top_window = old_bottom;
paint_and_above(top_window);
old_top = top_window;
old_bottom = bottom_window;
top_window = old_top->below;
top_window->above = 0;
old_top->below = 0;
old_top->above = old_bottom;
old_bottom->below = old_top;
bottom_window = old_top;
paint_and_above(bottom_window->above);
break;
case WM_SHUFFLE_DOWN:
if (!top_window || !top_window->below)
break;
case WM_MOVE_LEFT:
old_top = top_window;
old_bottom = bottom_window;
bottom_window = old_bottom->above;
bottom_window->below = 0;
old_bottom->above = 0;
old_bottom->below = old_top;
old_top->above = old_bottom;
top_window = old_bottom;
paint_and_above(top_window);
break;
case WM_MOVE_LEFT:
if (top_window) {
--top_window->xpos;
paint_all();
break;
case WM_MOVE_RIGHT:
}
break;
case WM_MOVE_RIGHT:
if (top_window) {
++top_window->xpos;
paint_all();
break;
case WM_MOVE_UP:
}
break;
case WM_MOVE_UP:
if (top_window) {
--top_window->ypos;
paint_all();
break;
case WM_MOVE_DOWN:
}
break;
case WM_MOVE_DOWN:
if (top_window) {
++top_window->ypos;
paint_all();
break;
case WM_RUN_COMMAND:
if (!try_elf_run(drives, run_command, run_command_pass, 0))
PANIC("Couldn't run program listed in " RUN_COMMAND_FILE ".");
}
switch_to_task_cr3();
return;
break;
case WM_RUN_COMMAND:
if (!try_elf_run(drives, run_command, run_command_pass, 0))
PANIC("Couldn't run program listed in " RUN_COMMAND_FILE ".");
}
switch_to_task_cr3();
return;
}
if (top_window)
send_action(top_window, packet);
}
}