Save/restore rdi to r10 instead of stack in strcat(),puts()

2025-06-24 15:06:21 +02:00
parent f4162ed21a
commit f10b2f3c88
2 changed files with 4 additions and 8 deletions
--- a/console.asm
+++ b/console.asm
@ -27,11 +27,9 @@ puts:
 	push	rbp
 	mov	rbp, rsp

-	push	rdi
-	sub	rsp, 8
+	mov	r10, rdi
 	call	print
-	add	rsp, 8
-	pop	rdi
+	mov	rdi, r10
 	mov	rax, 1
 	mov	rdi, 1
 	mov	rsi, NL
--- a/string.asm
+++ b/string.asm
@ -54,13 +54,11 @@ strcat:
 	push	rbp
 	mov	rbp, rsp

-	push	rdi
-	sub	rsp, 8
+	mov	r10, rdi
 	call	strlen
 	add	rdi, rax
 	call	strcpy
-	add	rsp, 8
-	pop	rax
+	mov	rax, r10

 	leave
 	ret