Change the way events are handled. Now, get a full list of events, not just one per system call.

risc_v/src/input.rs

@@ -76,7 +76,7 @@ pub struct Config {
     pub config: ConfigUnion,
 }
 
-#[repr(u8)]
+#[repr(u16)]
 #[derive(Copy, Clone)]
 pub enum EventType {
     Syn = 0x00,
@@ -236,10 +236,10 @@ pub fn setup_input_device(ptr: *mut u32) -> bool {
 			repopulate_event(&mut dev, i);
 		}
 		INPUT_DEVICES[idx] = Some(dev);
-		ABS_EVENTS = Some(VecDeque::with_capacity(10000));
-		ABS_OBSERVERS = Some(VecDeque::new());
+		ABS_EVENTS = Some(VecDeque::with_capacity(100000));
+		// ABS_OBSERVERS = Some(VecDeque::new());
 		KEY_EVENTS = Some(VecDeque::with_capacity(1000));
-		KEY_OBSERVERS = Some(VecDeque::new());
+		// KEY_OBSERVERS = Some(VecDeque::new());
 
 		true
 	}

risc_v/src/syscall.rs

@@ -8,6 +8,7 @@ use crate::{block::block_op,
 			fs,
 			elf,
 			gpu,
+			input,
 			buffer::Buffer,
             page::{virt_to_phys, Table, map, EntryBits, PAGE_SIZE},
 			process::{PROCESS_LIST, PROCESS_LIST_MUTEX, delete_process, get_by_pid, set_sleeping, set_waiting, add_kernel_process_args}};
@@ -226,23 +227,28 @@ pub unsafe fn do_syscall(mepc: usize, frame: *mut TrapFrame) -> usize {
 		},
 		1004 => {
 			// wait for abs events
-			let ret_pc;
 			let mut ev = ABS_EVENTS.take().unwrap();
-			if ev.is_empty() {
-				(*frame).regs[Registers::A0 as usize] = -1isize as usize;
-				ret_pc = 0;
-			}
-			else {
-				let event = ev.pop_front().unwrap();
-				let mut ret = event.code as u64;
-				ret <<= 32;
-				ret |= event.value as u64;
-				// println!("ABS: Code: {}, Value: {}", event.code, event.value);
-				(*frame).regs[Registers::A0 as usize] = ret 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() {
+						return 0;
+					}
+					let paddr = paddr.unwrap() as *mut Event;
+					*paddr = ev.pop_front().unwrap();
+					(*frame).regs[Registers::A0 as usize] += 1;
+				}
 			}
 			ABS_EVENTS.replace(ev);
-			ret_pc
+			0
 		},
 		1062 => {
 			// gettime

risc_v/src/userspace/fb.cpp

@@ -2,13 +2,8 @@
 #include <syscall.h>
 #include <input-event-codes.h>
 
-struct Pixel {
-	unsigned char r;
-	unsigned char g;
-	unsigned char b;
-	unsigned char a;
-};
 
+#define MAX_EVENTS 100000
 #define cos(x)	  table_cos(x)
 // #define cos(x)	  taylor_cos(x)
 #define min(x, y) ((x < y) ? x : y)
@@ -25,6 +20,19 @@ using i64 = signed long;
 using f64 = double;
 using f32 = float;
 
+struct Pixel {
+	u8 r;
+	u8 g;
+	u8 b;
+	u8 a;
+};
+
+struct Event {
+	u16 event_type;
+	u16 code;
+	u32 value;
+} events[MAX_EVENTS];
+
 void fill_rect(Pixel *fb, u32 x, u32 y, u32 width, u32 height, Pixel &color);
 void stroke_rect(Pixel *fb, u32 x, u32 y, u32 width, u32 height, Pixel &color, u32 size);
 void set_pixel(Pixel *fb, u32 x, u32 y, Pixel &color);
@@ -48,7 +56,7 @@ u32 lerp(u32 val, u32 mx1, u32 mx2) {
 
 int main()
 {
-	bool mouse_down = false;
+	bool mouse_down = true;
 	int VERSION = -1;
 	printf("(%d): TESTING FRAMEBUFFER FROM USERSPACE\n", VERSION);
 	Pixel *fb = (Pixel *)syscall_get_fb(6);
@@ -61,6 +69,7 @@ int main()
 	u32 y = 0;
 	u32 width = 40;
 	u32 height = 50;
+	unsigned long i = 0;
 
 	fill_rect(fb, 0, 0, 640, 480, white_color);
 	stroke_rect(fb, 10, 10, 20, 20, blue_color, 5);
@@ -68,34 +77,28 @@ int main()
 	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 {
-		i64 key = syscall_get_key();
-		i64 abs = syscall_get_abs();
-		if (key == -1 && abs == -1) {
+		
+		if ((abs = syscall_get_abs(events, MAX_EVENTS)) < 1) {
 			syscall_sleep(noevt_slptm);
-			continue;
 		}
-		if (key != -1) {
-			short code = key >> 16;
-			bool pressed = (key & 1) ? true : false;
-			// printf("%s key %d\n", pressed ? "pressed" : "released", code);
-			if (code == BTN_LEFT) { // left mouse button
-				mouse_down = pressed;
-			}
-		}
-		if (abs != -1) {
-			u16 code = abs >> 32;
-			if (code == ABS_X) {
-				x = lerp(abs & 0xffff, 32767, 640);
-			}
-			else if (code == ABS_Y) {
-				y = lerp(abs & 0xffff, 32767, 480);
-			}
-			if (mouse_down) {
+		for (i64 z = 0;z < abs;z++) {
+			Event &ev = events[z];
+			if (ev.code == ABS_X) {
+				x = lerp(ev.value & 0xffff, 32767, 640);
+				fill_rect(fb, x, y, 5, 5, orange_color);
+			}
+			else if (ev.code == ABS_Y) {
+				y = lerp(ev.value & 0xffff, 32767, 480);
 				fill_rect(fb, x, y, 5, 5, orange_color);
-				syscall_inv_rect(6, 0, 0, 640, 480);
 			}
 		}
+		syscall_inv_rect(6, 0, 0, 640, 480);
+		// if (i++ >= 100) {
+		// 	i = 0;
+		// 	syscall_inv_rect(6, 0, 0, 640, 480);
+		// }
 	} while (true);
 	return 0;
 }

risc_v/src/userspace/startlib/syscall.h

@@ -18,6 +18,6 @@ extern "C"
 #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_abs(x)	make_syscall(1004)
+#define syscall_get_abs(x, y)	make_syscall(1004, (unsigned long)x, (unsigned long)y)
 #define syscall_get_time()  make_syscall(1062)