kolibrios/programs/system/os/kolibri.asm
CleverMouse 50b2538b02 part of main system dll, not usable yet
git-svn-id: svn://kolibrios.org@5195 a494cfbc-eb01-0410-851d-a64ba20cac60
2014-11-28 18:35:35 +00:00

145 lines
3.9 KiB
NASM

format PE DLL GUI 0.8 at 7FF00000h
entry start
include '../../struct.inc'
include '../../proc32.inc'
include 'fpo.inc'
include 'export.inc'
include 'pe.inc'
section '.text' code readable executable
FS_STACK_MAX equ dword [fs:4]
FS_STACK_MIN equ dword [fs:8]
FS_SELF_PTR equ dword [fs:0x18]
FS_PROCESS_DATA equ dword [fs:0x30]
FS_ERRNO equ dword [fs:0x34]
FS_SYSCALL_PTR equ dword [fs:0xC0]
ENOMEM = 12
DLL_PROCESS_DETACH = 0
DLL_PROCESS_ATTACH = 1
DLL_THREAD_ATTACH = 2
DLL_THREAD_DETACH = 3
SYSCALL_METHOD_I40 = 1
SYSCALL_METHOD_SYSENTER = 2
SYSCALL_METHOD_SYSCALL = 3
; Pointer to this structure is passed as the third argument
; to 'start' procedure by the kernel.
struct kernel_init_data
version dw ?
flags dw ?
syscall_method dd ?
; either one of SYSCALL_METHOD_xxx or pointer to procedure
exe_base dd ?
stack_base dd ?
stack_size dd ?
exe_path dd ?
command_line dd ?
ends
include 'malloc.inc'
proc syscall_int40
int 0x40
ret
endp
proc kercall
jmp FS_SYSCALL_PTR
endp
prologue@proc equ fpo_prologue
epilogue@proc equ fpo_epilogue
proc start stdcall, dll_base, reason, reserved
; 1. Do nothing unless called by the kernel for DLL_PROCESS_ATTACH.
cmp [reason], DLL_PROCESS_ATTACH
jnz .nothing
; 2. Validate version of the init struct.
; If not known, say a debug message and die.
mov ebp, [reserved]
cmp [ebp+kernel_init_data.version], 1
jnz .version_mismatch
; 3. Setup common data based on the init struct.
mov eax, [ebp+kernel_init_data.stack_base]
mov FS_STACK_MIN, eax
add eax, [ebp+kernel_init_data.stack_size]
mov FS_STACK_MAX, eax
mov eax, [ebp+kernel_init_data.syscall_method]
cmp eax, 0x10000
jae @f
mov eax, syscall_int40
@@:
mov FS_SYSCALL_PTR, eax
; 4. Initialize the process heap.
mov eax, [ebp+kernel_init_data.exe_base]
mov edx, [eax+STRIPPED_PE_HEADER.SizeOfHeapReserve]
cmp word [eax], 'MZ'
jnz @f
add eax, [eax+IMAGE_DOS_HEADER.e_lfanew]
mov edx, [eax+IMAGE_NT_HEADERS.OptionalHeader.SizeOfHeapReserve]
@@:
malloc_init
; ...TBD...
; Call exe entry point.
mov eax, [ebp+kernel_init_data.exe_base]
mov edx, [eax+STRIPPED_PE_HEADER.AddressOfEntryPoint]
cmp word [eax], 'MZ'
jnz @f
mov ecx, [eax+IMAGE_DOS_HEADER.e_lfanew]
add ecx, eax
mov edx, [ecx+IMAGE_NT_HEADERS.OptionalHeader.AddressOfEntryPoint]
@@:
add edx, eax
call edx
; If exe entry point has returned control, die.
mov eax, -1
call FS_SYSCALL_PTR
.version_mismatch:
mov esi, version_mismatch_msg
mov eax, 63
mov ebx, 1
@@:
mov cl, [esi]
test cl, cl
jz @f
int 0x40 ; can't use FS_SYSCALL_PTR here, it has not yet been set
inc esi
jmp @b
@@:
mov eax, -1
int 0x40
.nothing:
ret
endp
align 4
data export
export 'kolibri.dll' \
, kercall, 'kercall' \
, malloc, 'malloc' \
, free, 'free' \
, calloc, 'calloc' \
, realloc, 'realloc' \
, realloc_in_place, 'realloc_in_place' \
, memalign, 'memalign' \
, create_mspace, 'create_mspace' \
, destroy_mspace, 'destroy_mspace' \
, mspace_malloc, 'mspace_malloc' \
, mspace_free, 'mspace_free' \
, mspace_calloc, 'mspace_calloc' \
, mspace_realloc, 'mspace_realloc' \
, mspace_realloc_in_place, 'mspace_realloc_in_place' \
, mspace_memalign, 'mspace_memalign' \
end data
version_mismatch_msg db 'Version mismatch between kernel and kolibri.dll',13,10,0
if FOOTERS
section '.data' data readable writable
malloc_magic dd ?
end if