From 5c97a99839cfb9ccdf46a9baf5f75568ed304868 Mon Sep 17 00:00:00 2001
From: Abdelrahman <said.abdelrahman89@gmail.com>
Date: Sat, 13 Apr 2024 13:56:29 +0100
Subject: [PATCH] Execution ports homework

---
 haversine_02/src/repetition_testing/main.cpp  | 56 +++++++++++++++++++
 .../repetition_testing/reptest_functions.asm  | 24 ++++++++
 2 files changed, 80 insertions(+)

diff --git a/haversine_02/src/repetition_testing/main.cpp b/haversine_02/src/repetition_testing/main.cpp
index c8d9a0f..363b6b2 100644
--- a/haversine_02/src/repetition_testing/main.cpp
+++ b/haversine_02/src/repetition_testing/main.cpp
@@ -27,10 +27,12 @@ extern "C" void rat_add(u64 size);
 extern "C" void rat_mov_add(u64 size);
 extern "C" void read_1(char *buffer, u64 size);
 extern "C" void read_2(char *buffer, u64 size);
+extern "C" void read_3(char *buffer, u64 size);
 extern "C" void read_4(char *buffer, u64 size);
 extern "C" void read_8(char *buffer, u64 size);
 extern "C" void write_1(char *buffer, u64 size);
 extern "C" void write_2(char *buffer, u64 size);
+extern "C" void write_3(char *buffer, u64 size);
 extern "C" void write_4(char *buffer, u64 size);
 extern "C" void write_8(char *buffer, u64 size);
 extern "C" void read_1x2_low(char *buffer, u64 size);
@@ -60,10 +62,12 @@ void test_rat_add(reptester *tester, alloc_type type);
 void test_rat_mov_add(reptester *tester, alloc_type type);
 void test_read_1(reptester *tester, alloc_type type);
 void test_read_2(reptester *tester, alloc_type type);
+void test_read_3(reptester *tester, alloc_type type);
 void test_read_4(reptester *tester, alloc_type type);
 void test_read_8(reptester *tester, alloc_type type);
 void test_write_1(reptester *tester, alloc_type type);
 void test_write_2(reptester *tester, alloc_type type);
+void test_write_3(reptester *tester, alloc_type type);
 void test_write_4(reptester *tester, alloc_type type);
 void test_write_8(reptester *tester, alloc_type type);
 void test_read_1x2_low(reptester *tester, alloc_type type);
@@ -151,10 +155,12 @@ int main(int argc, char *argv[]) {
       // {{"RAT MOV ADD", "RAT MOV ADD WITH MALLOC"}, test_rat_mov_add},
       // {{"READ 1", "READ 1 WITH MALLOC"}, test_read_1},
       // {{"READ 2", "READ 2 WITH MALLOC"}, test_read_2},
+      // {{"READ 3", "READ 3 WITH MALLOC"}, test_read_3},
       // {{"READ 4", "READ 4 WITH MALLOC"}, test_read_4},
       // {{"READ 8", "READ 8 WITH MALLOC"}, test_read_8},
       // {{"WRITE 1", "WRITE 1 WITH MALLOC"}, test_write_1},
       // {{"WRITE 2", "WRITE 2 WITH MALLOC"}, test_write_2},
+      // {{"WRITE 3", "WRITE 3 WITH MALLOC"}, test_write_3},
       // {{"WRITE 4", "WRITE 4 WITH MALLOC"}, test_write_4},
       // {{"WRITE 8", "WRITE 8 WITH MALLOC"}, test_write_8},
       {{"READ 1x2 LOW", "READ 1x2 LOW WITH MALLOC"}, test_read_1x2_low},
@@ -732,6 +738,31 @@ void test_read_2(reptester *tester, alloc_type type) {
   handle_free(tester, type);
 }
 
+void test_read_3(reptester *tester, alloc_type type) {
+  u64 start = read_cpu_timer();
+  u64 fault_count_start = page_fault_count();
+
+  handle_alloc(tester, type);
+
+  u64 total_size = tester->params.read_size * tester->params.read_count;
+
+  read_3(tester->params.buffer, total_size);
+
+  u64 fault_count_end = page_fault_count();
+  u64 end = read_cpu_timer();
+
+  u64 read_time = end - start;
+  u64 page_faults = fault_count_end - fault_count_start;
+
+  tester->results = {
+      total_size,
+      read_time,
+      page_faults,
+  };
+
+  handle_free(tester, type);
+}
+
 void test_read_4(reptester *tester, alloc_type type) {
   u64 start = read_cpu_timer();
   u64 fault_count_start = page_fault_count();
@@ -832,6 +863,31 @@ void test_write_2(reptester *tester, alloc_type type) {
   handle_free(tester, type);
 }
 
+void test_write_3(reptester *tester, alloc_type type) {
+  u64 start = read_cpu_timer();
+  u64 fault_count_start = page_fault_count();
+
+  handle_alloc(tester, type);
+
+  u64 total_size = tester->params.read_size * tester->params.read_count;
+
+  write_3(tester->params.buffer, total_size);
+
+  u64 fault_count_end = page_fault_count();
+  u64 end = read_cpu_timer();
+
+  u64 read_time = end - start;
+  u64 page_faults = fault_count_end - fault_count_start;
+
+  tester->results = {
+      total_size,
+      read_time,
+      page_faults,
+  };
+
+  handle_free(tester, type);
+}
+
 void test_write_4(reptester *tester, alloc_type type) {
   u64 start = read_cpu_timer();
   u64 fault_count_start = page_fault_count();
diff --git a/haversine_02/src/repetition_testing/reptest_functions.asm b/haversine_02/src/repetition_testing/reptest_functions.asm
index 0c531f0..1a950e9 100644
--- a/haversine_02/src/repetition_testing/reptest_functions.asm
+++ b/haversine_02/src/repetition_testing/reptest_functions.asm
@@ -16,10 +16,12 @@ global rat_add
 global rat_mov_add
 global read_1
 global read_2
+global read_3
 global read_4
 global read_8
 global write_1
 global write_2
+global write_3
 global write_4
 global write_8
 global read_1x2_low
@@ -248,6 +250,17 @@ read_2:
 
 	ret
 
+read_3:
+	align 64
+	.loop:
+		%rep 3
+		mov rax, [rdi]
+		%endrep
+		sub rsi, 3
+		jnle .loop
+
+	ret
+
 read_4:
 	align 64
 	.loop:
@@ -290,6 +303,17 @@ write_2:
 
 	ret
 
+write_3:
+	align 64
+	.loop:
+		%rep 3
+		mov QWORD [rdi], 0
+		%endrep
+		sub rsi, 3
+		jnle .loop
+
+	ret
+
 write_4:
 	align 64
 	.loop: