WebSVN – Kolibri OS – Blame – /programs/develop/libraries/newlib/sdk/app.inc

Rev	Author	Line No.	Line
3915	Serge	1
		2
		3
		4	use32
		5
		6
		7	db 'MENUET02'
		8
		9	dd __start
		10	dd __iend
		11	dd __bssend
		12	dd __stack
		13	dd __cmdline
		14	dd __pgmname
		15	dd 0x0
		16	dd __idata_start
		17	dd __idata_end
		18	dd main
		19
		20	IMAGE_DOS_SIGNATURE equ 0x5A4D
		21
		22	IMAGE_FILE_MACHINE_I386 equ 0x014c
		23	IMAGE_NT_OPTIONAL_HDR32_MAGIC equ 0x10B
		24	IMAGE_NT_HEADERS32_SIZE equ 0xF8
		25
		26
		27
		28
		29	.e_lfanew equ 0x3C
		30
		31	.FileHeader.NumberOfSections equ 0x06
		32
		33	.OptionalHeader.ImageBase equ 0x34
		34
		35	.FileAlignment equ 0x3C
		36
		37	.OptionalHeader.SizeOfImage equ 0x50
		38
		39
		40	.VirtualAddress equ 0x0C
		41
		42	.PointerToRawData equ 0x14
		43
		44	.OptionalHeader.RelocDataDirectory.VirtualAddress equ 0xA0
		45
		46
		47	.SizeOfBlock equ 0x04
		48
		49
		50
		51
		52	mov ecx, STACK_SIZE
		53	add ecx, 4095
		54	and ecx, -4096
		55	int 0x40
		56	test eax, eax
		57	jz .exit
		58
		59	add ecx, eax
		60
		61	mov [fs:12], ecx
		62	mov esp, ecx
		63
		64	sub esp, 1024
		65
		66	mov ebx, esp
		67	mov ecx, -1
		68	int 0x40
		69
		70	mov eax, [ebx+30]
		71
		72	add esp, 1024
		73
		74	mov eax, 68
		75
		76	mov ecx, libc_path
		77	int 0x40
		78	test eax, eax
		79	jz .exit
		80
		81	push edx
		82
		83
		84	.validate_pe:
		85
		86	cmp edx, 0x3F
		87
		88	cmp word [eax], IMAGE_DOS_SIGNATURE
		89	jne .exit
		90
		91	mov edx, [eax+.e_lfanew]
		92
		93	jz .exit
		94
		95	add edx, eax ;edx = nt header
		96
		97
		98	cmp dword [edx], IMAGE_NT_SIGNATURE
		99
		100
		101	cmp word [edx+0x04], IMAGE_FILE_MACHINE_I386
		102
		103
		104	cmp word [edx+0x18], IMAGE_NT_OPTIONAL_HDR32_MAGIC
		105
		106
		107	mov ecx, [edx+.SectionAlignment]
		108
		109	ja .l1
		110
		111	cmp ecx, [edx+.FileAlignment]
		112
		113
		114	jmp @F
		115
		116	cmp ecx, [edx+.FileAlignment]
		117	jb .exit
		118	@@:
		119	test ecx, ecx
		120	jz .exit
		121
		122	lea eax, [ecx-1]
		123
		124	jnz .exit
		125
		126	mov ecx, [edx+.FileAlignment]
		127
		128	jz .exit
		129
		130	lea ebx, [ecx-1]
		131
		132	jnz .exit
		133
		134	cmp word [edx+.FileHeader.NumberOfSections], 96
		135
		136
		137	.create_image:
		138
		139	mov ecx, [edx+.OptionalHeader.SizeOfImage]
		140
		141	mov ebx, 12
		142	int 0x40
		143
		144	mov ebp, eax
		145
		146	jz .exit_2
		147
		148	mov ecx, [edx+.OptionalHeader.SizeOfHeaders]
		149
		150	mov edi, eax
		151	shr ecx, 2 ;copy header
		152	rep movsd
		153
		154	lea eax, [edx+IMAGE_NT_HEADERS32_SIZE] ;eax = MAGE_SECTION_HEADER
		155
		156	test ebx, ebx
		157	jz @F
		158
		159	.copy_loop:
		160
		161	test ecx, ecx
		162	jz .next_section
		163
		164	mov esi, [eax+.PointerToRawData]
		165
		166	jz .next_section
		167
		168	add esi, [esp]
		169
		170	add edi, ebp
		171	shr ecx, 2
		172	rep movsd
		173	;copy section
		174	.next_section:
		175	add eax, 0x28
		176	dec ebx
		177	jnz .copy_loop
		178	@@:
		179	push edx
		180
		181	mov esi, [edx+.OptionalHeader.RelocDataDirectory.Size]
		182
		183	jz .call_libc
		184
		185	mov ebx, ebp
		186
		187	mov edx, [edx+.OptionalHeader.RelocDataDirectory.VirtualAddress]
		188	lea ecx, [ebp+edx] ;IMAGE_BASE_RELOCATION
		189	mov eax, [ecx+.SizeOfBlock]
		190	test eax, eax
		191	jz .unmap_relocs
		192
		193	mov esi, ebx
		194
		195	push esi
		196	align 4
		197	.loop_block:
		198	sub eax, 8
		199	lea edx, [ecx+8] ;entry
		200	shr eax, 1
		201	jz .next_block
		202	lea edi, [ecx+eax*2+8] ;last entry
		203	align 4
		204	.loop_reloc:
		205
		206	mov si, [edx]
		207
		208	and eax, 0FFFh
		209	add eax, [ecx] ;offset
		210	shr si, 12 ;reloc type
		211	dec si
		212	jnz @F
		213
		214	.type_1:
		215
		216	add [eax+ebp], si
		217	jmp .next_entry
		218	@@:
		219	dec si
		220	jnz @F
		221
		222	.type_2:
		223
		224	jmp .next_entry
		225	@@:
		226	dec si
		227	jnz .next_entry
		228
		229	.type_3:
		230
		231	.next_entry:
		232	add edx, 2
		233	cmp edx, edi
		234	jne .loop_reloc
		235	.next_block:
		236	add ecx, [ecx+.SizeOfBlock]
		237	mov eax, [ecx+.SizeOfBlock]
		238	test eax, eax
		239	jnz .loop_block
		240
		241	add esp, 4
		242
		243	mov esi, [edx+.OptionalHeader.RelocDataDirectory.Size]
		244	mov edx, [edx+.OptionalHeader.RelocDataDirectory.VirtualAddress]
		245
		246	.unmap_relocs:
		247
		248	mov eax, 68
		249	mov ecx, ebp
		250	int 0x40
		251
		252	.call_libc:
		253
		254	push ebp
		255
		256	add ebp, [ebp+edx+0x28]
		257
		258	call ebp
		259
		260	.exit_2:
		261
		262	or eax, -1
		263	int 0x40
		264
		265	libc_path db '/kolibrios/lib/libc.dll',0
		266

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(root)/programs/develop/libraries/newlib/sdk/app.inc – Rev 3915