Simple procedure...

test/simple_procedure.eax

@@ -0,0 +1,34 @@
+fastcall procedure heyo
+	s8 <> h = "Heyo world!\n"
+begin
+	nop mov rax 1
+	nop mov rdi 1
+	nop mov rsi h
+	nop mov rdx 12
+	nop syscall
+end procedure
+
+fastcall procedure cyaa
+	s8 <> c = "Cyaa world!\n"
+begin
+	nop mov rax 1
+	nop mov rdi 1
+	nop mov rsi c
+	nop mov rdx 12
+	nop syscall
+end procedure
+
+unix program main
+	s8 <> m = "Meme world!\n"
+begin
+	nop fastcall heyo
+	nop mov rax 1
+	nop mov rdi 1
+	nop mov rsi m
+	nop mov rdx 12
+	nop syscall
+	nop fastcall cyaa
+	nop mov rax 60
+	nop mov rdi 60
+	nop syscall
+end program

tool/xia32e.c

@@ -162,6 +162,7 @@ int main (void) {
 			scope_label = 1;
 		} else if ((index >= token_add) && (index <= token_fldz)) {
 			tokenize (index + ADD);
+			if (index == token_call) tokenize (REL);
 			scope_instruction = 1;
 		} else if ((index >= token_al) && (index <= token_r15)) {
 			if (scope_instruction) {

tool/xia32e_test.asm

@@ -3,14 +3,17 @@ nop mov edi 1
 nop mov esi heyo
 nop mov edx 5
 nop syscall
+call c
+nop mov eax 60
+nop mov edi 60
+nop syscall
+. c
 nop mov eax 1
 nop mov edi 1
 nop mov esi cyaa
 nop mov edx 5
 nop syscall
-nop mov eax 60
+nop retn
-nop mov edi 60
-nop syscall
 nop
 . heyo db 5 72 69 89 79 10
 . cyaa db 5 67 89 65 65 10