forked from KolibriOS/kolibrios
Mistakes in functions of work with files and with system calls KolibriOS are corrected.
New functions for work with system calls KolibriOS are added. Functions for format output are added: printf (), fprintf (), sprintf (), snprintf (), vsnprintf (). For material numbers it is meanwhile supported only format output the (%f), and exponential output a (%e) is not realized yet. Functions for format output correctly work only in GCC because TinyC incorrectly works with the functions containing variable number of arguments. git-svn-id: svn://kolibrios.org@647 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
andrew_programmer
136
programs/develop/ktcc/trunk/source/start.asm
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136
programs/develop/ktcc/trunk/source/start.asm
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@@ -0,0 +1,136 @@
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format ELF
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section '.text' executable
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public start
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;extrn mf_init
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extrn main
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;include 'debug2.inc'
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__DEBUG__=0
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;start_:
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virtual at 0
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db 'MENUET01' ; 1. Magic number (8 bytes)
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dd 0x01 ; 2. Version of executable file
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dd start ; 3. Start address
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dd 0x0 ; 4. Size of image
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dd 0x100000 ; 5. Size of needed memory
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dd 0x100000 ; 6. Pointer to stack
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hparams dd 0x0 ; 7. Pointer to program arguments
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hpath dd 0x0 ; 8. Pointer to program path
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end virtual
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start:
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;DEBUGF 'Start programm\n'
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;init heap of memory
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mov eax,68
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mov ebx,11
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int 0x40
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;DEBUGF ' path "%s"\n params "%s"\n', .path, .params
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; check for overflow
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mov al, [path+buf_len-1]
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or al, [params+buf_len-1]
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jnz .crash
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; check if path written by OS
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mov eax, [hparams]
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test eax, eax
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jz .without_path
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mov eax, path
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.without_path:
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mov esi, eax
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call push_param
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; retrieving parameters
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mov esi, params
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xor edx, edx ; dl - <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(1) <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(0)
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; dh - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (1 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, 0 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
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mov ecx, 1 ; cl = 1
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; ch = 0 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
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.parse:
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lodsb
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test al, al
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jz .run
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test dl, dl
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jnz .findendparam
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;{<7B><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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cmp al, ' '
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jz .parse ;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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mov dl, cl ;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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cmp al, '"'
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jz @f ;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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mov dh, ch ;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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dec esi
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call push_param
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inc esi
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jmp .parse
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@@:
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mov dh, cl ;<3B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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call push_param ;<3B><><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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jmp .parse ;<3B><><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>}
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.findendparam:
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test dh, dh
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jz @f ; <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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cmp al, '"'
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jz .clear
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jmp .parse
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@@:
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cmp al, ' '
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jnz .parse
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.clear:
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lea ebx, [esi - 1]
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mov [ebx], ch
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mov dl, ch
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jmp .parse
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.run:
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;DEBUGF 'call main(%x, %x) with params:\n', [argc], argv
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if __DEBUG__ = 1
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mov ecx, [argc]
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@@:
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lea esi, [ecx * 4 + argv-4]
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DEBUGF '0x%x) "%s"\n', cx, [esi]
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loop @b
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end if
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push [argc]
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push argv
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call main
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.exit:
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;DEBUGF 'Exit from prog\n';
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xor eax,eax
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dec eax
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int 0x40
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dd -1
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.crash:
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;DEBUGF 'E:buffer overflowed\n'
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jmp .exit
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;============================
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push_param:
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;============================
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;parameters
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; esi - pointer
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;description
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; procedure increase argc
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; and add pointer to array argv
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; procedure changes ebx
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mov ebx, [argc]
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cmp ebx, max_parameters
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jae .dont_add
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mov [argv+4*ebx], esi
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inc [argc]
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.dont_add:
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ret
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;==============================
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public params as '__argv'
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public path as '__path'
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section '.bss'
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buf_len = 0x400
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max_parameters=0x20
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argc rd 1
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argv rd max_parameters
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path rb buf_len
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params rb buf_len
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;section '.data'
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;include_debug_strings ; ALWAYS present in data section
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