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1 | /** IA-32 linker script |
1 | /** IA-32 linker script |
2 | * |
2 | * |
3 | * umapped section: |
3 | * umapped section: |
4 | * kernel text |
4 | * kernel text |
5 | * kernel data |
5 | * kernel data |
6 | * mapped section: |
6 | * mapped section: |
7 | * kernel text |
7 | * kernel text |
8 | * kernel data |
8 | * kernel data |
9 | */ |
9 | */ |
10 | 10 | ||
11 | #define __ASM__ |
11 | #define __ASM__ |
12 | #include <arch/boot/boot.h> |
12 | #include <arch/boot/boot.h> |
13 | #include <arch/mm/page.h> |
13 | #include <arch/mm/page.h> |
14 | 14 | ||
15 | OUTPUT_FORMAT(binary) |
15 | OUTPUT_FORMAT(binary) |
16 | ENTRY(kernel_image_start) |
16 | ENTRY(kernel_image_start) |
17 | 17 | ||
18 | SECTIONS { |
18 | SECTIONS { |
19 | .unmapped BOOTSTRAP_OFFSET: AT (BOOTSTRAP_OFFSET) { |
19 | .unmapped BOOTSTRAP_OFFSET: AT (BOOTSTRAP_OFFSET) { |
20 | unmapped_ktext_start = .; |
20 | unmapped_ktext_start = .; |
21 | *(K_TEXT_START); |
21 | *(K_TEXT_START); |
22 | *(K_TEXT_START_2); |
22 | *(K_TEXT_START_2); |
23 | unmapped_ktext_end = .; |
23 | unmapped_ktext_end = .; |
24 | 24 | ||
25 | unmapped_kdata_start = .; |
25 | unmapped_kdata_start = .; |
26 | *(K_DATA_START); |
26 | *(K_DATA_START); |
27 | LONG(0xdeadbeaf); /* TODO: remove 0xdeadbeaf */ |
- | |
28 | unmapped_kdata_end = .; |
27 | unmapped_kdata_end = .; |
- | 28 | ||
- | 29 | LONG(0xdeadbeaf); /* TODO: remove 0xdeadbeaf */ |
|
29 | } |
30 | } |
30 | 31 | ||
31 | .mapped (PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)+SIZEOF(.unmapped)): AT (BOOTSTRAP_OFFSET+SIZEOF(.unmapped)) { |
32 | .mapped (PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)+SIZEOF(.unmapped)): AT (BOOTSTRAP_OFFSET+SIZEOF(.unmapped)) { |
32 | ktext_start = .; |
33 | ktext_start = .; |
33 | *(BOOT_DATA); |
34 | *(BOOT_DATA); |
34 | *(.text); |
35 | *(.text); |
35 | ktext_end = .; |
36 | ktext_end = .; |
36 | 37 | ||
37 | kdata_start = .; |
38 | kdata_start = .; |
38 | *(.data); /* initialized data */ |
39 | *(.data); /* initialized data */ |
39 | *(.rodata*); /* string literals */ |
40 | *(.rodata*); /* string literals */ |
40 | *(COMMON); /* global variables */ |
41 | *(COMMON); /* global variables */ |
41 | hardcoded_load_address = .; |
42 | hardcoded_load_address = .; |
42 | LONG(PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)); |
43 | LONG(PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)); |
43 | hardcoded_ktext_size = .; |
44 | hardcoded_ktext_size = .; |
44 | LONG((ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start)); |
45 | LONG((ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start)); |
45 | hardcoded_kdata_size = .; |
46 | hardcoded_kdata_size = .; |
46 | LONG((kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start)); |
47 | LONG((kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start)); |
47 | hardcoded_unmapped_ktext_size = .; |
48 | hardcoded_unmapped_ktext_size = .; |
48 | LONG(unmapped_ktext_end - unmapped_ktext_start); |
49 | LONG(unmapped_ktext_end - unmapped_ktext_start); |
49 | hardcoded_unmapped_kdata_size = .; |
50 | hardcoded_unmapped_kdata_size = .; |
50 | LONG(unmapped_kdata_end - unmapped_kdata_start); |
51 | LONG(unmapped_kdata_end - unmapped_kdata_start); |
51 | *(.bss); /* uninitialized static variables */ |
52 | *(.bss); /* uninitialized static variables */ |
52 | *(.note.GNU-stack); |
- | |
53 | *(.comment); |
- | |
54 | - | ||
55 | symbol_table = .; |
53 | symbol_table = .; |
56 | *(symtab.*); /* Symbol table, must be LAST symbol! */ |
54 | *(symtab.*); /* Symbol table, must be LAST symbol! */ |
57 | 55 | ||
58 | kdata_end = .; |
56 | kdata_end = .; |
59 | } |
57 | } |
- | 58 | ||
- | 59 | /DISCARD/ : { |
|
- | 60 | *(.note.GNU-stack); |
|
- | 61 | *(.comment); |
|
- | 62 | } |
|
- | 63 | ||
60 | 64 | ||
61 | _hardcoded_kernel_size = (ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start) + (kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start); |
65 | _hardcoded_kernel_size = (ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start) + (kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start); |
62 | _hardcoded_unmapped_size = (unmapped_ktext_end - unmapped_ktext_start) + (unmapped_kdata_end - unmapped_kdata_start); |
66 | _hardcoded_unmapped_size = (unmapped_ktext_end - unmapped_ktext_start) + (unmapped_kdata_end - unmapped_kdata_start); |
63 | 67 | ||
64 | e820table_boot = KA2PA(e820table) - BOOT_OFFSET; |
68 | e820table_boot = KA2PA(e820table) - BOOT_OFFSET; |
65 | e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET; |
69 | e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET; |
66 | real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot); |
70 | real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot); |
67 | } |
71 | } |
68 | 72 |