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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 | ENTRY(kernel_image_start) |
- | |
16 | - | ||
17 | SECTIONS { |
15 | SECTIONS { |
18 | .unmapped BOOTSTRAP_OFFSET: AT (BOOTSTRAP_OFFSET) { |
16 | .unmapped BOOTSTRAP_OFFSET: AT (BOOTSTRAP_OFFSET) { |
19 | unmapped_ktext_start = .; |
17 | unmapped_ktext_start = .; |
20 | *(K_TEXT_START); |
18 | *(K_TEXT_START); |
21 | *(K_TEXT_START_2); |
19 | *(K_TEXT_START_2); |
22 | unmapped_ktext_end = .; |
20 | unmapped_ktext_end = .; |
23 | 21 | ||
24 | unmapped_kdata_start = .; |
22 | unmapped_kdata_start = .; |
25 | *(K_DATA_START); |
23 | *(K_DATA_START); |
26 | unmapped_kdata_end = .; |
24 | unmapped_kdata_end = .; |
27 | } |
25 | } |
28 | 26 | ||
29 | .mapped (PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)+SIZEOF(.unmapped)): AT (BOOTSTRAP_OFFSET+SIZEOF(.unmapped)) { |
27 | .mapped (PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)+SIZEOF(.unmapped)): AT (BOOTSTRAP_OFFSET+SIZEOF(.unmapped)) { |
30 | ktext_start = .; |
28 | ktext_start = .; |
31 | *(BOOT_DATA); |
- | |
32 | *(.text); |
29 | *(.text); |
33 | ktext_end = .; |
30 | ktext_end = .; |
34 | 31 | ||
35 | kdata_start = .; |
32 | kdata_start = .; |
36 | *(.data); /* initialized data */ |
33 | *(.data); /* initialized data */ |
37 | *(.rodata*); /* string literals */ |
34 | *(.rodata*); /* string literals */ |
38 | *(COMMON); /* global variables */ |
35 | *(COMMON); /* global variables */ |
39 | hardcoded_load_address = .; |
36 | hardcoded_load_address = .; |
40 | LONG(PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)); |
37 | LONG(PA2KA(BOOT_OFFSET+BOOTSTRAP_OFFSET)); |
41 | hardcoded_ktext_size = .; |
38 | hardcoded_ktext_size = .; |
42 | LONG((ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start)); |
39 | LONG((ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start)); |
43 | hardcoded_kdata_size = .; |
40 | hardcoded_kdata_size = .; |
44 | LONG((kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start)); |
41 | LONG((kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start)); |
45 | hardcoded_unmapped_ktext_size = .; |
42 | hardcoded_unmapped_ktext_size = .; |
46 | LONG(unmapped_ktext_end - unmapped_ktext_start); |
43 | LONG(unmapped_ktext_end - unmapped_ktext_start); |
47 | hardcoded_unmapped_kdata_size = .; |
44 | hardcoded_unmapped_kdata_size = .; |
48 | LONG(unmapped_kdata_end - unmapped_kdata_start); |
45 | LONG(unmapped_kdata_end - unmapped_kdata_start); |
49 | symbol_table = .; |
46 | symbol_table = .; |
50 | *(symtab.*); /* Symbol table, must be LAST symbol! */ |
47 | *(symtab.*); /* Symbol table, must be LAST symbol! */ |
51 | *(.bss); /* uninitialized static variables */ |
48 | *(.bss); /* uninitialized static variables */ |
52 | kdata_end = .; |
49 | kdata_end = .; |
53 | } |
50 | } |
54 | 51 | ||
55 | /DISCARD/ : { |
52 | /DISCARD/ : { |
56 | *(.note.GNU-stack); |
53 | *(.note.GNU-stack); |
57 | *(.comment); |
54 | *(.comment); |
58 | } |
55 | } |
59 | 56 | ||
60 | 57 | ||
61 | _hardcoded_kernel_size = (ktext_end - ktext_start) + (unmapped_ktext_end - unmapped_ktext_start) + (kdata_end - kdata_start) + (unmapped_kdata_end - unmapped_kdata_start); |
58 | _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); |
59 | _hardcoded_unmapped_size = (unmapped_ktext_end - unmapped_ktext_start) + (unmapped_kdata_end - unmapped_kdata_start); |
63 | 60 | ||
64 | e820table_boot = KA2PA(e820table) - BOOT_OFFSET; |
61 | e820table_boot = KA2PA(e820table) - BOOT_OFFSET; |
65 | e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET; |
62 | e820counter_boot = KA2PA(e820counter) - BOOT_OFFSET; |
66 | real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot); |
63 | real_bootstrap_gdtr = PA2KA(real_bootstrap_gdtr_boot); |
67 | } |
64 | } |
68 | 65 |