diff options
Diffstat (limited to 'jefs.s')
| -rw-r--r-- | jefs.s | 44 |
1 files changed, 24 insertions, 20 deletions
@@ -60,28 +60,32 @@ %assign __NR_exit 60 ;; }}} -section .bss +section .bss exec wstack_b: resq 2047 wstack: resq 1 +umem: resb 0x9c400 +umem_e: + section .text global _start _start: + ; mov r11, 0x0409040904090409 ; init mov r14, wstack ; point SP to top ; EXPAND BRK - xor rdi, rdi ; brk syscall called with 0 gives the current brk - mov rax, __NR_brk - syscall - mov qword [here], rax - mov qword [h0], rax - - add rax, 0x9c400 ; 640kb, entirely arbitrary - mov rdi, rax - mov rax, __NR_brk - syscall ; if this fails, have fun - mov qword [hend], rax + ; xor rdi, rdi ; brk syscall called with 0 gives the current brk + ; mov rax, __NR_brk + ; syscall + ; mov qword [here], rax + ; mov qword [h0], rax + ; + ; add rax, 0x9c400 ; 640kb, entirely arbitrary + ; mov rdi, rax + ; mov rax, __NR_brk + ; syscall ; if this fails, have fun + ; mov qword [hend], rax call interpret mov rdi, 0 @@ -298,13 +302,13 @@ defword "compile,", compile_comma, 0 mov r12, [here] ; compile mov r11, [cfa] - mov word [r12], 0x94bb + mov word [r12], 0xbb49 add r12, 2 mov qword [r12], r11 add r12, 8 ; compile call r11 - mov word [r12], 0x41ff + mov word [r12], 0xff41 add r12, 2 mov byte [r12], 0xd3 inc r12 @@ -406,13 +410,13 @@ defword "lit", lit, immediate_mask ; C: ( n -- ) ( -- n ) pspop r11 mov r12, [here] - mov dword [r12], 0x4d8d76f8 + mov dword [r12], 0xf8768d4d add r12, 4 - mov word [r12], 0x49bb + mov word [r12], 0xbb49 add r12, 2 mov qword [r12], r11 add r12, 8 - mov word [r12], 0x4d89 + mov word [r12], 0x894d add r12, 2 mov byte [r12], 0x1e inc r12 @@ -573,9 +577,9 @@ defword "HEREDUMP", heredump, 0 defvar ">in", to_in, 0, 0 defvar "state", state, 0, interpreting -defvar "here", here, 0, 0 -defvar "h0", h0, 0, 0 ; beginning of user memory area -defvar "hend", hend, 0, 0 ; ending of user memory area +defvar "here", here, 0, umem +defvar "h0", h0, 0, umem ; beginning of user memory area +defvar "hend", hend, 0, umem_e ; ending of user memory area defvar "latest", latest, 0, lfa_latest initfile: |