Get rid of unneeded function prologues/epilogues

string.asm

@@ -10,9 +10,6 @@ section	.text
 ;----- strlen(char* str) -----;
 ; return value: amount of characters before EOS was found
 strlen:
-	push	rbp
-	mov	rbp, rsp
-
 	xor	rax, rax
 	.findEOS:
 		cmp	byte [rdi+rax], 0x0
@@ -21,14 +18,10 @@ strlen:
 		jmp	.findEOS
 
 	.quit:
-	leave
 	ret
 ;----- strcpy(char* dest, char* src) -----;
 ; return value: pointer to dest or NULL if nothing was copied (note that EOS is always copied to dest)
 strcpy:
-	push	rbp
-	mov	rbp, rsp
-
 	mov	r11, rdi
 	xor	rax, rax
 	xor	rcx, rcx
@@ -49,14 +42,10 @@ strcpy:
 	mov	rax, rdi
 
 	.quit:
-	leave
 	ret
 ;----- strlcpy(char* dest, char* src, int size) -----;
 ; return value: Length of src
 strlcpy:
-	push	rbp
-	mov	rbp, rsp
-
 	mov	r9, rsi
 	test	rdx, rdx
 	jz	.quit
@@ -79,29 +68,20 @@ strlcpy:
 	.quit:
 	mov	rdi, r9
 	call	strlen
-	leave
 	ret
 ;----- strcat(char* dest, char* src) -----;
 ; return value: pointer to dest
 strcat:
-	push	rbp
-	mov	rbp, rsp
-
 	mov	r8, rdi
 	call	strlen
 	add	rdi, rax
 	call	strcpy
 	mov	rax, r8
-
-	leave
 	ret
 ;----- strcmp(char* str1, char* str2) -----;
 ; return value: 0 if both strings are the same, otherwise index in array str1 where strings mismatch
 ; returns -1 if str2 is longer than str1 and no difference was found before that happens
 strcmp:
-	push	rbp
-	mov	rbp, rsp
-
 	call	strlen
 	xor	r10, r10
 	.compareLoop:
@@ -115,25 +95,21 @@ strcmp:
 		inc	r10
 		jmp	.compareLoop
 	.0f:
-		mov	rax, -1
-		cmp	byte [rsi], 0x0
-		jne	.quit
-		xor	rax, rax
-		jmp	.quit
+	mov	rax, -1
+	cmp	byte [rsi], 0x0
+	jne	.quit
+	xor	rax, rax
+	jmp	.quit
 
 	.mismatch:
-		mov	rax, r10
+	mov	rax, r10
 
 	.quit:
-	leave
 	ret
 ;----- strclr(char* str) -----;
 ; Replaces all characters of a string with \0 untill EOS is found
 ; returns amount of changed characters
 strclr:
-	push	rbp
-	mov	rbp, rsp
-
 	call	strlen
 	mov	rcx, rax
 	mov	rdx, rax
@@ -141,21 +117,14 @@ strclr:
 	cld
     rep	stosb
 	mov	rax, rdx
-
-	leave
 	ret
 ;----- strlclr(char* str, int size) -----;
 ; Replaces characters of a string with \0, using arg size
 ; <!> DANGEROUS FUNCTION, it might exceed string boundaries if used incorrectly. Use strclr() instead!
 ; Function has no return value, rax will be 0 (0x0 stored in rax for opcode stosb)
 strlclr:
-	push	rbp
-	mov	rbp, rsp
-
 	mov	rcx, rsi
 	xor	rax, rax
 	cld
     rep	stosb
-
-	leave
 	ret