diff options
Diffstat (limited to 'sts/ia32/elf')
| -rw-r--r-- | sts/ia32/elf/begin.sts | 129 | ||||
| -rw-r--r-- | sts/ia32/elf/end.sts | 21 | ||||
| -rw-r--r-- | sts/ia32/elf/syscall.sts | 41 |
3 files changed, 191 insertions, 0 deletions
diff --git a/sts/ia32/elf/begin.sts b/sts/ia32/elf/begin.sts new file mode 100644 index 0000000..16d3355 --- /dev/null +++ b/sts/ia32/elf/begin.sts @@ -0,0 +1,129 @@ +?create ?? _code_segment +_code_segment ?choose + +# 08048000 ?org +# 4 ?size +# 0 ?endianness + +?create ?? _data_segment +_data_segment ?choose + +# 09048000 ?org +# 4 ?size +# 0 ?endianness + +_code_segment ?choose + +; ELF header +; EI_MAG - ELF magic number +# 7f ?' # 45 ?' # 4c ?' # 46 ?' +; EI_CLASS - 32-bit format +# 1 ?' +; EI_DATA - little-endiann +# 1 ?' +; EI_VERSION - current ELF header version +# 1 ?' +; EI_OSABI - Linux ABI +# 3 ?' +; EI_ABIVERSION - none +# 0 ?' +; EI_PAD - padding +# 7 ?res +; Executable file type +# 2 ?2. +; IA-32 architecture +# 3 ?2. +; ELF version +# 1 ?4. +; Entry point +?$ ?? _elf_entry +# 0 ?4. +; Program headers offset +# 34 ?4. +; Section headers offset +# 0 ?4. +; Extra flags +# 0 ?4. +; ELF header size +# 34 ?2. +; Program header size +# 20 ?2. +; Number of program headers +# 2 ?2. +; Section header size +# 28 ?2. +; Number of section headers +# 0 ?2. +; Section name section index +# 0 ?2. + +; ELF CODE PROGRAM HEADER +; Segment type +# 1 ?4. +; Segment offset +# 0 ?4. +; Segment virtual address +?$$ ?4. +; Segment physical address +?$$ ?4. +; Segment file size +?$ ?? _code_segment_file_size +# 0 ?4. +; Segment memory size +?$ ?? _code_segment_memory_size +# 0 ?4. +; Segment flags +# 5 ?4. +; Segment alignment +# 1000 ?4. + +; ELF DATA PROGRAM HEADER +; Segment type +# 1 ?4. +; Segment offset +?$ ?? _data_segment_offset +# 0 ?4. +; Segment virtual address +_data_segment ?choose +?$$ +_code_segment ?choose +?4. +; Segment physical address +_data_segment ?choose +?$$ +_code_segment ?choose +?4. +; Segment file size +?$ ?? _data_segment_file_size +# 0 ?4. +; Segment memory size +?$ ?? _data_segment_memory_size +# 0 ?4. +; Segment flags +# 6 ?4. +; Segment alignment +# 1000 ?4. + +; Return stack +_data_segment ?choose +1000 ?res +?$ ?dup ?? _return_stack +_code_segment ?choose + +; PROGRAM ENTRY CODE +?$ _elf_entry ?! +; mov ebp, _return_stack +# bd ?' +_return_stack ?. +; mov esi, _threaded_code_entry +# be ?' +?$ ?? _threaded_code_entry +# 0 ?. +; lodsd +# ad ?' +; jmp dword [eax] +# ff ?' # 20 ?' + +module sts/ia32/ia32.sts +module sts/ia32/elf/syscall.sts +module sts/common/common.sts diff --git a/sts/ia32/elf/end.sts b/sts/ia32/elf/end.sts new file mode 100644 index 0000000..7c80eec --- /dev/null +++ b/sts/ia32/elf/end.sts @@ -0,0 +1,21 @@ +; Code segment alignment +# 1000 ?$ # 1000 ?mod ?- ?dup ?res + +; Code segment ELF sizes +?$ ?$$ ?- _code_segment_file_size ?! +?$ ?$$ ?- _code_segment_memory_size ?! + +; Data segment ELF offset +?$ ?$$ ?- +_code_segment ?choose +_data_segment_offset ?! + +; Data segment ELF sizes +_data_segment ?choose +?$ ?$$ ?- +_code_segment ?choose +_data_segment_file_size ?! +_data_segment ?choose +?$ ?$$ ?- +_code_segment ?choose +_data_segment_memory_size ?! 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 |