Fix bf.s for LostKingdomHEADmaster

1 files changed, 4 insertions, 2 deletions

diff --git a/src/bf.s b/src/bf.s
index 2d904e6..b989afa 100644
--- a/src/bf.s
+++ b/src/bf.s
@@ -14,7 +14,8 @@ default rel
 %define SYS_exit  0x3c
 
 section .rodata
-	max_codesize equ 32768 ; must be an integral multiple of the page size
+	; max_codesize must be an integral multiple of the page size
+	max_codesize equ 528 * 4096
 	error_input_str db "usage: bf file.b", 0x0a
 	error_input_str_len equ $ - error_input_str
 	error_open_failed db "bf: failed to open file", 0x0a
@@ -57,7 +58,7 @@ _start:
 	mov rdx, 0x1 ; prot = PROT_READ
 	mov rsi, max_codesize ; length
 	xor rdi, rdi ; addr = 0
-	mov rax, SYS_mmap ; no munmap because rbp is used until exit
+	mov rax, SYS_mmap ; no munmap because the file is used until exit
 	syscall
 
 	mov rbp, rax ; rbp = instructions
@@ -69,6 +70,7 @@ _start:
 
 .main_loop:
 	; switch [instruction]
+	; TODO: use a jump table instead
 
 .case1:
 	cmp bl, '>'