Another step to release.

1 files changed, 41 insertions, 0 deletions

diff --git a/sts/ia32/elf/syscall.sts b/sts/ia32/elf/syscall.sts
new file mode 100644
index 0000000..3acfef2
--- /dev/null
+++ b/sts/ia32/elf/syscall.sts
@@ -0,0 +1,41 @@
+defasm sys_exit
+    # b8 ?' # 1 ?.                      ; mov eax, 1
+    # 31 ?' # db ?'                     ; xor ebx, ebx
+    # cd ?' # 80 ?'                     ; int 0x80
+; no need in next since this is the last instruction
+
+_data_segment ?choose
+    ?$ ?? _iobuf # 0 ?.
+_code_segment ?choose
+
+defasm sys_read
+    # b8 ?' # 3 ?.                      ; mov eax, 3
+    # 31 ?' # db ?'                     ; xor ebx, ebx
+    # b9 ?' _iobuf ?.                   ; mov ecx, _iobuf
+    # ba ?' # 1 ?.                      ; mov edx, 1
+    # cd ?' # 80 ?'                     ; int 0x80
+    # 31 ?' # db ?'                     ; xor ebx, ebx
+    # 8a ?' # 1d ?' _iobuf ?.           ; mov bl, [_iobuf]
+    # 53 ?'                             ; push ebx
+    # 50 ?'                             ; push eax
+next
+
+defasm sys_write
+    # 58 ?'                             ; pop eax
+    # a2 ?' _iobuf ?.                   ; mov [_iobuf], al
+    # b8 ?' # 4 ?.                      ; mov eax, 4
+    # bb ?' # 1 ?.                      ; mov ebx, 1
+    # b9 ?' _iobuf ?.                   ; mov ecx, _iobuf
+    # ba ?' # 1 ?.                      ; mov edx, 1
+    # cd ?' # 80 ?'                     ; int 0x80
+next
+
+defasm sys_write_err
+    # 58 ?'                             ; pop eax
+    # a2 ?' _iobuf ?.                   ; mov [_iobuf], al
+    # b8 ?' # 4 ?.                      ; mov eax, 4
+    # bb ?' # 2 ?.                      ; mov ebx, 2
+    # b9 ?' _iobuf ?.                   ; mov ecx, _iobuf
+    # ba ?' # 1 ?.                      ; mov edx, 1
+    # cd ?' # 80 ?'                     ; int 0x80
+next