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Added keyboard event gather. Fixed bug where we didn't replace the event queues.

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This commit is contained in:
Stephen Marz 2020-05-28 16:06:05 -04:00
parent f9f93ada71
commit 8132b63f9c
3 changed files with 39 additions and 37 deletions
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31
risc_v/src/syscall.rs
View File

@ -209,21 +209,28 @@ pub unsafe fn do_syscall(mepc: usize, frame: *mut TrapFrame) -> usize {
},
1002 => {
// wait for keyboard events
let ret_pc;
let mut ev = KEY_EVENTS.take().unwrap();
if ev.is_empty() {
(*frame).regs[Registers::A0 as usize] = -1isize as usize;
ret_pc = 0;
let max_events = (*frame).regs[Registers::A1 as usize];
let vaddr = (*frame).regs[Registers::A0 as usize] as *const Event;
if (*frame).satp >> 60 != 0 {
let process = get_by_pid((*frame).pid as u16);
let table = ((*process).get_table_address()
as *mut Table)
.as_mut()
.unwrap();
(*frame).regs[Registers::A0 as usize] = 0;
for i in 0..ev.len() {
let paddr = virt_to_phys(table, vaddr.add(i) as usize);
if paddr.is_none() {
break;
}
let paddr = paddr.unwrap() as *mut Event;
*paddr = ev.pop_front().unwrap();
(*frame).regs[Registers::A0 as usize] += 1;
}
else {
let event = ev.pop_front().unwrap();
let ret = ((event.code as usize) << 16) | event.value as usize;
// println!("Code: {}, Value: {}, ret: 0x{:016x}", event.code, event.value, ret);
(*frame).regs[Registers::A0 as usize] = ret;
ret_pc = 0;
}
KEY_EVENTS.replace(ev);
ret_pc
0
},
1004 => {
// wait for abs events
@ -240,7 +247,7 @@ pub unsafe fn do_syscall(mepc: usize, frame: *mut TrapFrame) -> usize {
for i in 0..ev.len() {
let paddr = virt_to_phys(table, vaddr.add(i) as usize);
if paddr.is_none() {
return 0;
break;
}
let paddr = paddr.unwrap() as *mut Event;
*paddr = ev.pop_front().unwrap();

39
risc_v/src/userspace/fb.cpp
View File

@ -49,53 +49,48 @@ struct Rect {
u32 height;
};
u32 lerp(u32 val, u32 mx1, u32 mx2) {
constexpr u32 lerp(u32 val, u32 mx1, u32 mx2) {
f64 r = val / static_cast<f64>(mx1);
return r * mx2;
}
int main()
{
bool mouse_down = true;
int VERSION = -1;
printf("(%d): TESTING FRAMEBUFFER FROM USERSPACE\n", VERSION);
bool pressed = false;
Pixel *fb = (Pixel *)syscall_get_fb(6);
Pixel blue_color = {0, 0, 255, 255};
Pixel red_color = {255, 0, 0, 255};
Pixel green_color = {0, 255, 0, 255};
Pixel white_color = {255, 255, 255, 255};
Pixel orange_color = {255, 150, 0, 255};
u32 x = 0;
u32 y = 0;
u32 width = 40;
u32 height = 50;
unsigned long i = 0;
u32 num_events;
fill_rect(fb, 0, 0, 640, 480, white_color);
stroke_rect(fb, 10, 10, 20, 20, blue_color, 5);
stroke_rect(fb, 50, 50, 40, 40, green_color, 10);
stroke_rect(fb, 150, 150, 140, 140, red_color, 15);
draw_cosine(fb, 0, 400, 500, 50, red_color);
syscall_inv_rect(6, x, y, 640, 480);
i64 abs;
do {
if ((abs = syscall_get_abs(events, MAX_EVENTS)) < 1) {
if ((num_events = syscall_get_key(0, MAX_EVENTS)) > 0) {
for (u32 z = 0;z < num_events;z++) {
Event &ev = events[z];
if (ev.code == BTN_MOUSE) {
pressed = (ev.value & 1) == 1;
}
}
}
if ((num_events = syscall_get_abs(events, MAX_EVENTS)) < 1) {
syscall_sleep(noevt_slptm);
continue;
}
for (i64 z = 0;z < abs;z++) {
for (u32 z = 0;z < num_events;z++) {
Event &ev = events[z];
if (ev.code == ABS_X) {
x = lerp(ev.value & 0x7fff, 32767, 640);
fill_rect(fb, x, y, 5, 5, orange_color);
}
else if (ev.code == ABS_Y) {
y = lerp(ev.value & 0x7fff, 32767, 480);
}
if (pressed) {
fill_rect(fb, x, y, 5, 5, orange_color);
}
}
if (pressed) {
syscall_inv_rect(6, 0, 0, 640, 480);
}
} while (true);
return 0;
}

2
risc_v/src/userspace/startlib/syscall.h
View File

@ -17,7 +17,7 @@ extern "C"
#define syscall_sleep(x) make_syscall(10, (unsigned long)x)
#define syscall_get_fb(x) make_syscall(1000, (unsigned long)x)
#define syscall_inv_rect(d, x, y, w, h) make_syscall(1001, (unsigned long) d, (unsigned long)x, (unsigned long)y, (unsigned long)w, (unsigned long)h)
#define syscall_get_key(x) make_syscall(1002)
#define syscall_get_key(x, y) make_syscall(1002, (unsigned long)x, (unsigned long)y)
#define syscall_get_abs(x, y) make_syscall(1004, (unsigned long)x, (unsigned long)y)
#define syscall_get_time() make_syscall(1062)