From 79d2693915a7e95063fc2fd8a487d7757b5a1aef Mon Sep 17 00:00:00 2001
From: 0x00Jeff <jeff_septiceye@protonmail.com>
Date: Mon, 17 Mar 2025 20:18:40 +0000
Subject: [PATCH] Feat: replaced AT&T assembly syntax with intel

---
 Makefile    |  6 +++--
 coroutine.c | 74 ++++++++++++++++++++++++++---------------------------
 2 files changed, 41 insertions(+), 39 deletions(-)

diff --git a/Makefile b/Makefile
index bac3cff..cbabc45 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+FLAGS="-masm=intel"
+
 build/counter: examples/counter.c coroutine.h build/coroutine.a
 	gcc -I. -Wall -Wextra -ggdb -o build/counter examples/counter.c build/coroutine.a
 
@@ -21,11 +23,11 @@ build/lexer: examples/lexer.c coroutine.h build/coroutine.a
 
 build/coroutine.so: coroutine.c
 	mkdir -p build
-	gcc -Wall -Wextra -ggdb -shared -fPIC -o build/coroutine.so coroutine.c
+	gcc $(FLAGS) -Wall -Wextra -ggdb -shared -fPIC -o build/coroutine.so coroutine.c
 
 build/coroutine.a: build/coroutine.o
 	ar -rcs build/coroutine.a build/coroutine.o
 
 build/coroutine.o: coroutine.c coroutine.h
 	mkdir -p build
-	gcc -Wall -Wextra -ggdb -c -o build/coroutine.o coroutine.c
+	gcc $(FLAGS) -Wall -Wextra -ggdb -c -o build/coroutine.o coroutine.c
diff --git a/coroutine.c b/coroutine.c
index f28d249..388c1d9 100644
--- a/coroutine.c
+++ b/coroutine.c
@@ -89,15 +89,15 @@ void __attribute__((naked)) coroutine_yield(void)
 {
     // @arch
     asm(
-    "    pushq %rdi\n"
-    "    pushq %rbp\n"
-    "    pushq %rbx\n"
-    "    pushq %r12\n"
-    "    pushq %r13\n"
-    "    pushq %r14\n"
-    "    pushq %r15\n"
-    "    movq %rsp, %rdi\n"     // rsp
-    "    movq $0, %rsi\n"       // sm = SM_NONE
+    "    push rdi\n"
+    "    push rbp\n"
+    "    push rbx\n"
+    "    push r12\n"
+    "    push r13\n"
+    "    push r14\n"
+    "    push r15\n"
+    "    mov rdi, rsp\n"     // rsp
+    "    mov rsi, 0\n"       // sm = SM_NONE
     "    jmp coroutine_switch_context\n");
 }
 
@@ -106,16 +106,16 @@ void __attribute__((naked)) coroutine_sleep_read(int fd)
     (void) fd;
     // @arch
     asm(
-    "    pushq %rdi\n"
-    "    pushq %rbp\n"
-    "    pushq %rbx\n"
-    "    pushq %r12\n"
-    "    pushq %r13\n"
-    "    pushq %r14\n"
-    "    pushq %r15\n"
-    "    movq %rdi, %rdx\n"     // fd
-    "    movq %rsp, %rdi\n"     // rsp
-    "    movq $1, %rsi\n"       // sm = SM_READ
+    "    push rdi\n"
+    "    push rbp\n"
+    "    push rbx\n"
+    "    push r12\n"
+    "    push r13\n"
+    "    push r14\n"
+    "    push r15\n"
+    "    mov rdx, rdi\n"     // fd
+    "    mov rdi, rsp\n"     // rsp
+    "    mov rsi, 1\n"       // sm = SM_READ
     "    jmp coroutine_switch_context\n");
 }
 
@@ -124,16 +124,16 @@ void __attribute__((naked)) coroutine_sleep_write(int fd)
     (void) fd;
     // @arch
     asm(
-    "    pushq %rdi\n"
-    "    pushq %rbp\n"
-    "    pushq %rbx\n"
-    "    pushq %r12\n"
-    "    pushq %r13\n"
-    "    pushq %r14\n"
-    "    pushq %r15\n"
-    "    movq %rdi, %rdx\n"     // fd
-    "    movq %rsp, %rdi\n"     // rsp
-    "    movq $2, %rsi\n"       // sm = SM_WRITE
+    "    push rdi\n"
+    "    push rbp\n"
+    "    push rbx\n"
+    "    push r12\n"
+    "    push r13\n"
+    "    push r14\n"
+    "    push r15\n"
+    "    mov rdx, rdi\n"     // fd
+    "    mov rdi, rsp\n"     // rsp
+    "    mov rsi, 2\n"       // sm = SM_WRITE
     "    jmp coroutine_switch_context\n");
 }
 
@@ -142,14 +142,14 @@ void __attribute__((naked)) coroutine_restore_context(void *rsp)
     // @arch
     (void)rsp;
     asm(
-    "    movq %rdi, %rsp\n"
-    "    popq %r15\n"
-    "    popq %r14\n"
-    "    popq %r13\n"
-    "    popq %r12\n"
-    "    popq %rbx\n"
-    "    popq %rbp\n"
-    "    popq %rdi\n"
+    "    mov rsp, rdi\n"
+    "    pop r15\n"
+    "    pop r14\n"
+    "    pop r13\n"
+    "    pop r12\n"
+    "    pop rbx\n"
+    "    pop rbp\n"
+    "    pop rdi\n"
     "    ret\n");
 }