Last change
on this file since 444 was 444, checked in by coas-nagasima, 4 years ago |
muslのソースコードを追加
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Property svn:eol-style
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native
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Property svn:mime-type
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File size:
963 bytes
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1 | #define _GNU_SOURCE
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2 | #include <link.h>
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3 | #include <stdint.h>
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4 |
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5 | struct find_exidx_data {
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6 | uintptr_t pc, exidx_start;
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7 | int exidx_len;
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8 | };
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9 |
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10 | static int find_exidx(struct dl_phdr_info *info, size_t size, void *ptr)
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11 | {
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12 | struct find_exidx_data *data = ptr;
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13 | const ElfW(Phdr) *phdr = info->dlpi_phdr;
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14 | uintptr_t addr, exidx_start = 0;
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15 | int i, match = 0, exidx_len = 0;
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16 |
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17 | for (i = info->dlpi_phnum; i > 0; i--, phdr++) {
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18 | addr = info->dlpi_addr + phdr->p_vaddr;
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19 | switch (phdr->p_type) {
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20 | case PT_LOAD:
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21 | match |= data->pc >= addr && data->pc < addr + phdr->p_memsz;
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22 | break;
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23 | case PT_ARM_EXIDX:
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24 | exidx_start = addr;
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25 | exidx_len = phdr->p_memsz;
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26 | break;
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27 | }
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28 | }
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29 | data->exidx_start = exidx_start;
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30 | data->exidx_len = exidx_len;
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31 | return match;
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32 | }
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33 |
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34 | uintptr_t __gnu_Unwind_Find_exidx(uintptr_t pc, int *pcount)
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35 | {
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36 | struct find_exidx_data data;
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37 | data.pc = pc;
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38 | if (dl_iterate_phdr(find_exidx, &data) <= 0)
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39 | return 0;
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40 | *pcount = data.exidx_len / 8;
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41 | return data.exidx_start;
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42 | }
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