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0
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1 OUTPUT_FORMAT("elf32-littlearm")
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2 OUTPUT_ARCH(arm)
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3 ENTRY(_start)
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4
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5 ENTRY_SVC_STACK_SIZE = 0x1000;
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6
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7 SECTIONS
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8 {
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9 /* the entry point, before enabling paging. The code to enable paing
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10 needs to have the same virtual/physical address. entry.S and start.c
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11 run in this initial setting.*/
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12 . = 0x10000;
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13 .start_sec : {
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13
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14 build/entry-clang.o(.text)
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0
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15 build/start.o(.text .text.*)
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16
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13
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17 build/entry-clang.o(.rodata .rodata.*)
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0
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18 build/start.o(.rodata .rodata.*)
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19
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13
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20 build/entry-clang.o(.data .data.*)
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0
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21 build/start.o(.data .data.*)
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22
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23 PROVIDE(edata_entry = .);
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24
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13
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25 build/entry-clang.o(.bss .bss.* COMMON)
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0
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26 build/start.o(.bss .bss.* COMMON)
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27
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28 /*define a stack for the entry*/
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29 . = ALIGN(0x1000);
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30 . += ENTRY_SVC_STACK_SIZE;
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31
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32 PROVIDE (svc_stktop = .);
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33
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34 /* define the kernel page table, must be 16K and 16K-aligned*/
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35 . = ALIGN(0x4000);
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36 PROVIDE (_kernel_pgtbl = .);
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37 . += 0x4000;
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38
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39 /* we also need a user page table*/
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40 PROVIDE (_user_pgtbl = .);
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41 . += 0x1000;
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42
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43 PROVIDE(end_entry = .);
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44 }
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45
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46 /*the kernel executes at the higher 2GB address space, but loaded
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47 at the lower memory (0x20000)*/
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48 . = 0x80020000;
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49
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50 .text : AT(0x20000){
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51 *(.text .text.* .gnu.linkonce.t.*)
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52 }
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53
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54 PROVIDE(etext = .); /* Define the 'etext' symbol to this value */
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55
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56 .rodata : {
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57 *(.rodata .rodata.* .gnu.linkonce.r.*)
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58 }
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59
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60 /* aligned the data to a (4K) page, so it can be assigned
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61 different protection than the code*/
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62 . = ALIGN(0x1000);
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63
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64 PROVIDE (data_start = .);
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65
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66 .data : {
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67 *(.data .data.*)
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68 }
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69
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70 PROVIDE (edata = .);
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71
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72 .bss : {
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73 *(.bss .bss.* COMMON)
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74 }
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75
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76 . = ALIGN(0x1000);
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77 PROVIDE (end = .);
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78 }
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