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Re: GRUB - no multiheader found
Posted: Fri Jul 02, 2021 7:24 am
by Ovid
klange wrote:The Multiboot2 header needs to be within the first 0x8000 bytes of the file, but ld's gone and put all the important parts of your binary after 0x10000 for padding and alignment reasons. From the "-n" in your ld command line it looks like you're at least trying to tell it not to do that, but I'm not sure the 'nmagic' flag actually works - the usual recommendation is something like "-z max-page-size=0x1000".
Is this what I should write in the ld command?
Re: GRUB - no multiheader found
Posted: Fri Jul 02, 2021 8:39 am
by Ovid
Ovid wrote:klange wrote:The Multiboot2 header needs to be within the first 0x8000 bytes of the file, but ld's gone and put all the important parts of your binary after 0x10000 for padding and alignment reasons. From the "-n" in your ld command line it looks like you're at least trying to tell it not to do that, but I'm not sure the 'nmagic' flag actually works - the usual recommendation is something like "-z max-page-size=0x1000".
Is this what I should write in the ld command?
I run it with your recommendations, but I still get the same error.
Here is what happends when I write the checking command for the second time:
ELF Header:
Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x100000
Start of program headers: 64 (bytes into file)
Start of section headers: 4272 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 1
Size of section headers: 64 (bytes)
Number of section headers: 9
Section header string table index: 8
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text PROGBITS 0000000000100000 00000080
00000000000004e2 0000000000000000 AX 0 0 16
[ 2] .rodata PROGBITS 00000000001004e8 00000568
0000000000000088 0000000000000000 A 0 0 8
[ 3] .eh_frame PROGBITS 0000000000100570 000005f0
0000000000000158 0000000000000000 A 0 0 8
[ 4] .bss NOBITS 00000000001006e0 00000748
0000000000007020 0000000000000000 WA 0 0 32
[ 5] .comment PROGBITS 0000000000000000 00000748
0000000000000011 0000000000000001 MS 0 0 1
[ 6] .symtab SYMTAB 0000000000000000 00000760
00000000000005e8 0000000000000018 7 50 8
[ 7] .strtab STRTAB 0000000000000000 00000d48
0000000000000323 0000000000000000 0 0 1
[ 8] .shstrtab STRTAB 0000000000000000 0000106b
0000000000000041 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
l (large), p (processor specific)
There are no section groups in this file.
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000000080 0x0000000000100000 0x0000000000100000
0x00000000000006c8 0x0000000000007700 RWE 0x20
Section to Segment mapping:
Segment Sections...
00 .text .rodata .eh_frame .bss
There is no dynamic section in this file.
There are no relocations in this file.
The decoding of unwind sections for machine type Advanced Micro Devices X86-64 is not currently supported.
Symbol table '.symtab' contains 63 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000100000 0 SECTION LOCAL DEFAULT 1
2: 00000000001004e8 0 SECTION LOCAL DEFAULT 2
3: 0000000000100570 0 SECTION LOCAL DEFAULT 3
4: 00000000001006e0 0 SECTION LOCAL DEFAULT 4
5: 0000000000000000 0 SECTION LOCAL DEFAULT 5
6: 0000000000000000 0 FILE LOCAL DEFAULT ABS /root/env/src/impl/x86_64
7: 00000000000b8000 0 NOTYPE LOCAL DEFAULT ABS VIDEO_ADDR
8: 000000002f4b2f4f 0 NOTYPE LOCAL DEFAULT ABS OK_TEXT
9: 0000000000001000 0 NOTYPE LOCAL DEFAULT ABS ALIGNMENT_MEMORY
10: 0000000000004000 0 NOTYPE LOCAL DEFAULT ABS STACK_MEMORY
11: 0000000036d76289 0 NOTYPE LOCAL DEFAULT ABS BOOTLOADER_MAGIC_NUMBER
12: 000000004f524f45 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_1
13: 000000004f3a4f52 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_2
14: 000000004f204f20 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_3
15: 0000000080000000 0 NOTYPE LOCAL DEFAULT ABS MAGIC_CHECK_VALUE_1
16: 0000000080000001 0 NOTYPE LOCAL DEFAULT ABS MAGIC_CHECK_VALUE_2
17: 0000000000000b11 0 NOTYPE LOCAL DEFAULT ABS PW_CODE
18: 0000000000000083 0 NOTYPE LOCAL DEFAULT ABS PWH_CODE
19: 0000000000000200 0 NOTYPE LOCAL DEFAULT ABS MAPPED_VALUE
20: 0000000000200000 0 NOTYPE LOCAL DEFAULT ABS TWO_MB
21: 00000000c0000080 0 NOTYPE LOCAL DEFAULT ABS ENABLE_LONG_MODE
22: 000000000010002d 0 NOTYPE LOCAL DEFAULT 1 check_multiboot
23: 0000000000100035 0 NOTYPE LOCAL DEFAULT 1 check_multiboot.no_multib
24: 000000000010003c 0 NOTYPE LOCAL DEFAULT 1 check_cpuid
25: 0000000000100050 0 NOTYPE LOCAL DEFAULT 1 check_cpuid.no_cpuid
26: 0000000000100057 0 NOTYPE LOCAL DEFAULT 1 check_long_mode
27: 0000000000100075 0 NOTYPE LOCAL DEFAULT 1 check_long_mode.no_long_m
28: 0000000000100079 0 NOTYPE LOCAL DEFAULT 1 setup_page_tables
29: 000000000010009c 0 NOTYPE LOCAL DEFAULT 1 setup_page_tables.loop_me
30: 00000000001000b9 0 NOTYPE LOCAL DEFAULT 1 enable_paging
31: 00000000001000e4 0 NOTYPE LOCAL DEFAULT 1 error
32: 00000000001006e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l4
33: 00000000001016e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l3
34: 00000000001026e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l2
35: 00000000001036e0 0 NOTYPE LOCAL DEFAULT 4 stack_bottom
36: 00000000001076e0 0 NOTYPE LOCAL DEFAULT 4 stack_top
37: 00000000001004e8 0 NOTYPE LOCAL DEFAULT 2 gdt64
38: 0000000000000008 0 NOTYPE LOCAL DEFAULT ABS gdt64.code_segment
39: 00000000001004f8 0 NOTYPE LOCAL DEFAULT 2 gdt64.pointer
40: 0000000000000000 0 FILE LOCAL DEFAULT ABS /root/env/src/impl/x86_64
41: 0000000000000000 0 FILE LOCAL DEFAULT ABS main.c
42: 0000000000100508 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
43: 0000000000100510 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
44: 0000000000000000 0 FILE LOCAL DEFAULT ABS print.c
45: 0000000000100550 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
46: 0000000000100558 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
47: 0000000000000000 0 FILE LOCAL DEFAULT ABS terminal.c
48: 0000000000100560 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
49: 0000000000100568 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
50: 0000000000100312 133 FUNC GLOBAL DEFAULT 1 print_char
51: 0000000000100228 234 FUNC GLOBAL DEFAULT 1 print_newline
52: 00000000001001ef 57 FUNC GLOBAL DEFAULT 1 print_clear
53: 0000000000100415 51 FUNC GLOBAL DEFAULT 1 set_system_terminal
54: 0000000000100124 104 FUNC GLOBAL DEFAULT 1 kernel_main
55: 0000000000100448 93 FUNC GLOBAL DEFAULT 1 create_terminal
56: 000000000010018c 99 FUNC GLOBAL DEFAULT 1 clear_row
57: 00000000001003ed 40 FUNC GLOBAL DEFAULT 1 print_set_color
58: 0000000000100397 86 FUNC GLOBAL DEFAULT 1 print_string
59: 0000000000100110 0 NOTYPE GLOBAL DEFAULT 1 long_mode_start
60: 0000000000100000 0 NOTYPE GLOBAL DEFAULT 1 start
61: 00000000001004a5 61 FUNC GLOBAL DEFAULT 1 init_terminal
62: 00000000001076e0 32 OBJECT GLOBAL DEFAULT 4 system_terminal
No version information found in this file.
Re: GRUB - no multiheader found
Posted: Fri Jul 02, 2021 9:16 am
by klange
Look at the offsets for your sections - that’s how far into the file they are. They’re still ending up at 0x10000 which is no bueno. The next thing to try would be specifying a smaller alignment in your linker script…
Re: GRUB - no multiheader found
Posted: Sat Jul 03, 2021 11:50 am
by Ovid
klange wrote:Look at the offsets for your sections - that’s how far into the file they are. They’re still ending up at 0x10000 which is no bueno. The next thing to try would be specifying a smaller alignment in your linker script…
Well, after compiling everything using this script:
Code: Select all
/* Specify where the entry point is (start): */
ENTRY(start)
/* Define t(he sections of our binary: */
SECTIONS
{
. = 1M; /* All OS data will start 1M in. */
/* Set the boot section: */
.boot : ALIGN(0x250)
{
KEEP(*(.multiboot_header)) /* Include the multiboot header. */
}
/* Set the text section: */
.text : ALIGN(0x250)
{
*(.text) /* Include the text section (CPU instructions). */
}
}
I get the same error.
Those are the results of the
command:
ELF Header:
Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x100000
Start of program headers: 64 (bytes into file)
Start of section headers: 5168 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 1
Size of section headers: 64 (bytes)
Number of section headers: 9
Section header string table index: 8
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text PROGBITS 0000000000100000 00000400
00000000000004e2 0000000000000000 AX 0 0 1024
[ 2] .rodata PROGBITS 00000000001004e8 000008e8
0000000000000088 0000000000000000 A 0 0 8
[ 3] .eh_frame PROGBITS 0000000000100570 00000970
0000000000000158 0000000000000000 A 0 0 8
[ 4] .bss NOBITS 00000000001006e0 00000ac8
0000000000007020 0000000000000000 WA 0 0 32
[ 5] .comment PROGBITS 0000000000000000 00000ac8
0000000000000011 0000000000000001 MS 0 0 1
[ 6] .symtab SYMTAB 0000000000000000 00000ae0
00000000000005e8 0000000000000018 7 50 8
[ 7] .strtab STRTAB 0000000000000000 000010c8
0000000000000323 0000000000000000 0 0 1
[ 8] .shstrtab STRTAB 0000000000000000 000013eb
0000000000000041 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
l (large), p (processor specific)
There are no section groups in this file.
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000000400 0x0000000000100000 0x0000000000100000
0x00000000000006c8 0x0000000000007700 RWE 0x400
Section to Segment mapping:
Segment Sections...
00 .text .rodata .eh_frame .bss
There is no dynamic section in this file.
There are no relocations in this file.
The decoding of unwind sections for machine type Advanced Micro Devices X86-64 is not currently supported.
Symbol table '.symtab' contains 63 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000100000 0 SECTION LOCAL DEFAULT 1
2: 00000000001004e8 0 SECTION LOCAL DEFAULT 2
3: 0000000000100570 0 SECTION LOCAL DEFAULT 3
4: 00000000001006e0 0 SECTION LOCAL DEFAULT 4
5: 0000000000000000 0 SECTION LOCAL DEFAULT 5
6: 0000000000000000 0 FILE LOCAL DEFAULT ABS /root/env/src/impl/x86_64
7: 00000000000b8000 0 NOTYPE LOCAL DEFAULT ABS VIDEO_ADDR
8: 000000002f4b2f4f 0 NOTYPE LOCAL DEFAULT ABS OK_TEXT
9: 0000000000001000 0 NOTYPE LOCAL DEFAULT ABS ALIGNMENT_MEMORY
10: 0000000000004000 0 NOTYPE LOCAL DEFAULT ABS STACK_MEMORY
11: 0000000036d76289 0 NOTYPE LOCAL DEFAULT ABS BOOTLOADER_MAGIC_NUMBER
12: 000000004f524f45 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_1
13: 000000004f3a4f52 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_2
14: 000000004f204f20 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_3
15: 0000000080000000 0 NOTYPE LOCAL DEFAULT ABS MAGIC_CHECK_VALUE_1
16: 0000000080000001 0 NOTYPE LOCAL DEFAULT ABS MAGIC_CHECK_VALUE_2
17: 0000000000000b11 0 NOTYPE LOCAL DEFAULT ABS PW_CODE
18: 0000000000000083 0 NOTYPE LOCAL DEFAULT ABS PWH_CODE
19: 0000000000000200 0 NOTYPE LOCAL DEFAULT ABS MAPPED_VALUE
20: 0000000000200000 0 NOTYPE LOCAL DEFAULT ABS TWO_MB
21: 00000000c0000080 0 NOTYPE LOCAL DEFAULT ABS ENABLE_LONG_MODE
22: 000000000010002d 0 NOTYPE LOCAL DEFAULT 1 check_multiboot
23: 0000000000100035 0 NOTYPE LOCAL DEFAULT 1 check_multiboot.no_multib
24: 000000000010003c 0 NOTYPE LOCAL DEFAULT 1 check_cpuid
25: 0000000000100050 0 NOTYPE LOCAL DEFAULT 1 check_cpuid.no_cpuid
26: 0000000000100057 0 NOTYPE LOCAL DEFAULT 1 check_long_mode
27: 0000000000100075 0 NOTYPE LOCAL DEFAULT 1 check_long_mode.no_long_m
28: 0000000000100079 0 NOTYPE LOCAL DEFAULT 1 setup_page_tables
29: 000000000010009c 0 NOTYPE LOCAL DEFAULT 1 setup_page_tables.loop_me
30: 00000000001000b9 0 NOTYPE LOCAL DEFAULT 1 enable_paging
31: 00000000001000e4 0 NOTYPE LOCAL DEFAULT 1 error
32: 00000000001006e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l4
33: 00000000001016e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l3
34: 00000000001026e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l2
35: 00000000001036e0 0 NOTYPE LOCAL DEFAULT 4 stack_bottom
36: 00000000001076e0 0 NOTYPE LOCAL DEFAULT 4 stack_top
37: 00000000001004e8 0 NOTYPE LOCAL DEFAULT 2 gdt64
38: 0000000000000008 0 NOTYPE LOCAL DEFAULT ABS gdt64.code_segment
39: 00000000001004f8 0 NOTYPE LOCAL DEFAULT 2 gdt64.pointer
40: 0000000000000000 0 FILE LOCAL DEFAULT ABS /root/env/src/impl/x86_64
41: 0000000000000000 0 FILE LOCAL DEFAULT ABS main.c
42: 0000000000100508 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
43: 0000000000100510 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
44: 0000000000000000 0 FILE LOCAL DEFAULT ABS print.c
45: 0000000000100550 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
46: 0000000000100558 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
47: 0000000000000000 0 FILE LOCAL DEFAULT ABS terminal.c
48: 0000000000100560 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
49: 0000000000100568 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
50: 0000000000100312 133 FUNC GLOBAL DEFAULT 1 print_char
51: 0000000000100228 234 FUNC GLOBAL DEFAULT 1 print_newline
52: 00000000001001ef 57 FUNC GLOBAL DEFAULT 1 print_clear
53: 0000000000100415 51 FUNC GLOBAL DEFAULT 1 set_system_terminal
54: 0000000000100124 104 FUNC GLOBAL DEFAULT 1 kernel_main
55: 0000000000100448 93 FUNC GLOBAL DEFAULT 1 create_terminal
56: 000000000010018c 99 FUNC GLOBAL DEFAULT 1 clear_row
57: 00000000001003ed 40 FUNC GLOBAL DEFAULT 1 print_set_color
58: 0000000000100397 86 FUNC GLOBAL DEFAULT 1 print_string
59: 0000000000100110 0 NOTYPE GLOBAL DEFAULT 1 long_mode_start
60: 0000000000100000 0 NOTYPE GLOBAL DEFAULT 1 start
61: 00000000001004a5 61 FUNC GLOBAL DEFAULT 1 init_terminal
62: 00000000001076e0 32 OBJECT GLOBAL DEFAULT 4 system_terminal
No version information found in this file.
And why don't I see the '.boot' section in the command results?
Re: GRUB - no multiheader found
Posted: Sat Jul 03, 2021 9:30 pm
by klange
ld doesn't know what to do with your .boot section and is likely discarding it; try putting *(.multiboot_header) into your .text (before *(.text))
Re: GRUB - no multiheader found
Posted: Wed Jul 07, 2021 6:47 am
by Ovid
klange wrote:ld doesn't know what to do with your .boot section and is likely discarding it; try putting *(.multiboot_header) into your .text (before *(.text))
I did as you said:
Code: Select all
/* Specify where the entry point is (start): */
ENTRY(start)
/* Define t(he sections of our binary: */
SECTIONS
{
. = 1M; /* All OS data will start 1M in. */
/* Set the text section: */
.text : ALIGN(0x500)
{
KEEP(*(.multiboot_header)) /* Include the multiboot header. */
*(.text) /* Include the text section (CPU instructions). */
}
}
But I still get the same results.
Here are the readelf results:
ELF Header:
Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x100000
Start of program headers: 64 (bytes into file)
Start of section headers: 4272 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 1
Size of section headers: 64 (bytes)
Number of section headers: 9
Section header string table index: 8
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .text PROGBITS 0000000000100000 00000080
00000000000004e2 0000000000000000 AX 0 0 16
[ 2] .rodata PROGBITS 00000000001004e8 00000568
0000000000000088 0000000000000000 A 0 0 8
[ 3] .eh_frame PROGBITS 0000000000100570 000005f0
0000000000000158 0000000000000000 A 0 0 8
[ 4] .bss NOBITS 00000000001006e0 00000748
0000000000007020 0000000000000000 WA 0 0 32
[ 5] .comment PROGBITS 0000000000000000 00000748
0000000000000011 0000000000000001 MS 0 0 1
[ 6] .symtab SYMTAB 0000000000000000 00000760
00000000000005e8 0000000000000018 7 50 8
[ 7] .strtab STRTAB 0000000000000000 00000d48
0000000000000323 0000000000000000 0 0 1
[ 8] .shstrtab STRTAB 0000000000000000 0000106b
0000000000000041 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
l (large), p (processor specific)
There are no section groups in this file.
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000000080 0x0000000000100000 0x0000000000100000
0x00000000000006c8 0x0000000000007700 RWE 0x20
Section to Segment mapping:
Segment Sections...
00 .text .rodata .eh_frame .bss
There is no dynamic section in this file.
There are no relocations in this file.
The decoding of unwind sections for machine type Advanced Micro Devices X86-64 is not currently supported.
Symbol table '.symtab' contains 63 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1: 0000000000100000 0 SECTION LOCAL DEFAULT 1
2: 00000000001004e8 0 SECTION LOCAL DEFAULT 2
3: 0000000000100570 0 SECTION LOCAL DEFAULT 3
4: 00000000001006e0 0 SECTION LOCAL DEFAULT 4
5: 0000000000000000 0 SECTION LOCAL DEFAULT 5
6: 0000000000000000 0 FILE LOCAL DEFAULT ABS /root/env/src/impl/x86_64
7: 00000000000b8000 0 NOTYPE LOCAL DEFAULT ABS VIDEO_ADDR
8: 000000002f4b2f4f 0 NOTYPE LOCAL DEFAULT ABS OK_TEXT
9: 0000000000001000 0 NOTYPE LOCAL DEFAULT ABS ALIGNMENT_MEMORY
10: 0000000000004000 0 NOTYPE LOCAL DEFAULT ABS STACK_MEMORY
11: 0000000036d76289 0 NOTYPE LOCAL DEFAULT ABS BOOTLOADER_MAGIC_NUMBER
12: 000000004f524f45 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_1
13: 000000004f3a4f52 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_2
14: 000000004f204f20 0 NOTYPE LOCAL DEFAULT ABS ERROR_PRINT_VALUE_3
15: 0000000080000000 0 NOTYPE LOCAL DEFAULT ABS MAGIC_CHECK_VALUE_1
16: 0000000080000001 0 NOTYPE LOCAL DEFAULT ABS MAGIC_CHECK_VALUE_2
17: 0000000000000b11 0 NOTYPE LOCAL DEFAULT ABS PW_CODE
18: 0000000000000083 0 NOTYPE LOCAL DEFAULT ABS PWH_CODE
19: 0000000000000200 0 NOTYPE LOCAL DEFAULT ABS MAPPED_VALUE
20: 0000000000200000 0 NOTYPE LOCAL DEFAULT ABS TWO_MB
21: 00000000c0000080 0 NOTYPE LOCAL DEFAULT ABS ENABLE_LONG_MODE
22: 000000000010002d 0 NOTYPE LOCAL DEFAULT 1 check_multiboot
23: 0000000000100035 0 NOTYPE LOCAL DEFAULT 1 check_multiboot.no_multib
24: 000000000010003c 0 NOTYPE LOCAL DEFAULT 1 check_cpuid
25: 0000000000100050 0 NOTYPE LOCAL DEFAULT 1 check_cpuid.no_cpuid
26: 0000000000100057 0 NOTYPE LOCAL DEFAULT 1 check_long_mode
27: 0000000000100075 0 NOTYPE LOCAL DEFAULT 1 check_long_mode.no_long_m
28: 0000000000100079 0 NOTYPE LOCAL DEFAULT 1 setup_page_tables
29: 000000000010009c 0 NOTYPE LOCAL DEFAULT 1 setup_page_tables.loop_me
30: 00000000001000b9 0 NOTYPE LOCAL DEFAULT 1 enable_paging
31: 00000000001000e4 0 NOTYPE LOCAL DEFAULT 1 error
32: 00000000001006e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l4
33: 00000000001016e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l3
34: 00000000001026e0 0 NOTYPE LOCAL DEFAULT 4 page_table_l2
35: 00000000001036e0 0 NOTYPE LOCAL DEFAULT 4 stack_bottom
36: 00000000001076e0 0 NOTYPE LOCAL DEFAULT 4 stack_top
37: 00000000001004e8 0 NOTYPE LOCAL DEFAULT 2 gdt64
38: 0000000000000008 0 NOTYPE LOCAL DEFAULT ABS gdt64.code_segment
39: 00000000001004f8 0 NOTYPE LOCAL DEFAULT 2 gdt64.pointer
40: 0000000000000000 0 FILE LOCAL DEFAULT ABS /root/env/src/impl/x86_64
41: 0000000000000000 0 FILE LOCAL DEFAULT ABS main.c
42: 0000000000100508 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
43: 0000000000100510 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
44: 0000000000000000 0 FILE LOCAL DEFAULT ABS print.c
45: 0000000000100550 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
46: 0000000000100558 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
47: 0000000000000000 0 FILE LOCAL DEFAULT ABS terminal.c
48: 0000000000100560 8 OBJECT LOCAL DEFAULT 2 NUM_COLS
49: 0000000000100568 8 OBJECT LOCAL DEFAULT 2 NUM_ROWS
50: 0000000000100312 133 FUNC GLOBAL DEFAULT 1 print_char
51: 0000000000100228 234 FUNC GLOBAL DEFAULT 1 print_newline
52: 00000000001001ef 57 FUNC GLOBAL DEFAULT 1 print_clear
53: 0000000000100415 51 FUNC GLOBAL DEFAULT 1 set_system_terminal
54: 0000000000100124 104 FUNC GLOBAL DEFAULT 1 kernel_main
55: 0000000000100448 93 FUNC GLOBAL DEFAULT 1 create_terminal
56: 000000000010018c 99 FUNC GLOBAL DEFAULT 1 clear_row
57: 00000000001003ed 40 FUNC GLOBAL DEFAULT 1 print_set_color
58: 0000000000100397 86 FUNC GLOBAL DEFAULT 1 print_string
59: 0000000000100110 0 NOTYPE GLOBAL DEFAULT 1 long_mode_start
60: 0000000000100000 0 NOTYPE GLOBAL DEFAULT 1 start
61: 00000000001004a5 61 FUNC GLOBAL DEFAULT 1 init_terminal
62: 00000000001076e0 32 OBJECT GLOBAL DEFAULT 4 system_terminal
No version information found in this file.
Re: GRUB - no multiheader found
Posted: Wed Jul 07, 2021 7:10 am
by klange
Hm, well I'm out of ideas. Can you upload the binary somewhere for some direct examination?
Re: GRUB - no multiheader found
Posted: Wed Jul 07, 2021 7:19 am
by Ovid
Alright, here it is:
https://easyupload.io/pt13lb
I changed the code a little bit, so be-aware of that.
Re: GRUB - no multiheader found
Posted: Wed Jul 07, 2021 8:08 am
by klange
It looks like you're not actually assembling / linking your Multiboot header assembly source...
Re: GRUB - no multiheader found
Posted: Wed Jul 07, 2021 8:19 am
by Ovid
klange wrote:It looks like you're not actually assembling / linking your Multiboot header assembly source...
Interesting, I the header file should have been compiled...
Re: GRUB - no multiheader found
Posted: Thu Jul 08, 2021 6:18 am
by Ovid
klange wrote:It looks like you're not actually assembling / linking your Multiboot header assembly source...
You're right, it didn't work because for some reason the file 'header.asm' wasn't linked.
When I move the code of that file to 'main.asm' it works...
What could be the reason it doesn't link the other asm files?
Re: GRUB - no multiheader found
Posted: Thu Jul 08, 2021 6:25 am
by Ovid
Ovid wrote:klange wrote:It looks like you're not actually assembling / linking your Multiboot header assembly source...
You're right, it didn't work because for some reason the file 'header.asm' wasn't linked.
When I move the code of that file to 'main.asm' it works...
What could be the reason it doesn't link the other asm files?
OK, I found out that the compiler did linked all asm files, it's just that the order was wrong.