From: yu.dongliang <18588496441@163.com>
Date: Thu, 11 Dec 2025 13:35:43 +0000 (+0800)
Subject: tmp
X-Git-Url: http://baseworks.info/?a=commitdiff_plain;h=279b55c3f390ea23c4aff923873e636c9aac14ab;p=asm_demo.git

tmp
---

diff --git a/Makefile b/Makefile
index 3a2ff19..331097d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,2 @@
 all:
-	gcc main.c str.s
+	gcc -fPIE main.c str.s asm.s
diff --git a/asm.s b/asm.s
new file mode 100644
index 0000000..20a22d2
--- /dev/null
+++ b/asm.s
@@ -0,0 +1,41 @@
+.text
+.global printf
+.global asm_main
+
+asm_main:
+#rdi = asm code
+0:
+	mov %rdi, %rsi
+1:
+	movb (%rdi), %al
+
+	cmpb $32, %al
+	je   2f
+
+	cmpb $44, %al
+	je   3f
+
+	cmpb $10, %al
+	je   4f
+
+	test %al, %al
+	je   5f
+
+	inc %rdi
+	jmp 1b
+
+2:#before ' ' is opcode
+3:#before ',' is operand 1
+4:#before '\n' is operand 2
+	movb $0, (%rdi)
+
+	push %rdi
+	mov  %rsi, %rdi
+	mov  $0, %eax
+	call printf
+	pop  %rdi
+
+	inc %rdi
+	jmp 0b
+5:
+	ret
diff --git a/main.c b/main.c
index 8dddeea..f1f3cde 100644
--- a/main.c
+++ b/main.c
@@ -4,6 +4,8 @@
 int asm_strcmp (const char* s1, const char* s2);
 int asm_strncmp(const char* s1, const char* s2, int n);
 
+int asm_main(const char* asm_code);
+
 int main(int argc, char* argv[])
 {
 	if (argc < 4) {
@@ -11,8 +13,17 @@ int main(int argc, char* argv[])
 		return -1;
 	}
 
+	printf("' ':%d, ',':%d\n", ' ', ',');
+
 	printf("strcmp: %d, strncmp: %d\n",
 			asm_strcmp (argv[1], argv[2]),
 			asm_strncmp(argv[1], argv[2], atoi(argv[3])));
+
+	char asm_code[] = "mov rax,rdx\n";
+
+	int i;
+	for (i = 0; i < sizeof(asm_code); i++)
+		printf("asm_code[%d]: %d\n", i, asm_code[i]);
+	asm_main(asm_code);
 	return 0;
 }