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taskman.inc: add comments for unobvious things, no code changes

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git-svn-id: svn://kolibrios.org@8592 a494cfbc-eb01-0410-851d-a64ba20cac60
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Rustem Gimadutdinov (rgimad) 2021-02-13 23:42:08 +00:00
parent 6b05d70aad
commit 1351c15bd0
1 changed files with 17 additions and 7 deletions
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24
kernel/trunk/core/taskman.inc
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@ -82,8 +82,8 @@ proc fs_execute
locals
cmdline rd 1
flags rd 1
slot rd 1
slot_base rd 1
slot rd 1 ; number of new thread slot
slot_base rd 1 ; base address of it
; app header data
hdr_cmdline rd 1
hdr_path rd 1
@ -112,13 +112,13 @@ proc fs_execute
mov [file_base], eax
mov [file_size], ebx
lea ebx, [hdr_cmdline]
call test_app_header
call test_app_header ; fill our app header data locals with values from given application header (if its correct)
mov esi, -0x1F
test eax, eax
jz .err_hdr
call lock_application_table
call alloc_thread_slot
call alloc_thread_slot ; create a slot for new thread
mov esi, -0x20 ; too many processes
test eax, eax
jz .err_0
@ -132,7 +132,7 @@ proc fs_execute
xor eax, eax
cld
rep stosd
; write application name
; write application name ( APPDATA.appname )
stdcall strrchr, [path_string], '/'
lea esi, [eax+1] ; -> name without path
mov ecx, 11
@ -155,24 +155,33 @@ proc fs_execute
call _strnlen
cmp eax, 256
jb @f
; if cmdline length >= 256 then increase needed memory size by this length
lea ebx, [eax+1]
add [hdr_emem], ebx
@@:
mov [cmdline_size], eax
stdcall create_process, [hdr_emem]
stdcall create_process, [hdr_emem] ; create a new process
mov esi, -30 ; no memory
test eax, eax
jz .err_hdr
; add new process to the list
mov ebx, [sys_proc+LHEAD.prev]
__list_add eax, ebx, sys_proc
; fill the structure fields:
mov ebx, [hdr_emem]
mov [eax+PROC.mem_used], ebx
; write that main thread of app belongs to new process
mov ebx, [slot_base]
mov [ebx+APPDATA.process], eax
; initialize the thread list of process: at this moment it consists only of one main thread
lea edx, [ebx+APPDATA.list]
lea ecx, [eax+PROC.thr_list]
list_add_tail edx, ecx
; allocate space and copy app header data locals and cmdline string there, put pointer to exec_params of new thread
mov eax, [cmdline_size]
add eax, sizeof.APP_HDR
stdcall kernel_alloc, eax
@ -184,9 +193,10 @@ proc fs_execute
mov ecx, [cmdline_size]
mov esi, [cmdline]
rep movsb
; set other parameters of application
lea eax, [hdr_cmdline]
stdcall set_app_params , [slot], eax, [flags]
mov eax, [process_number] ;set result
mov eax, [process_number] ; return process number
call unlock_application_table
ret