[ae5fe7e6] | 1 | #include <sys/cdefs.h> |
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| 2 | |
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| 3 | #include <errno.h> |
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| 4 | #include <stdio.h> |
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| 5 | #include <sys/types.h> |
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| 6 | #include <sys/stat.h> |
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| 7 | |
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| 8 | #include <rtems/rtl/rtl.h> |
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| 9 | #include "rtl-elf.h" |
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| 10 | #include "rtl-error.h" |
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[990adc5] | 11 | #include <rtems/rtl/rtl-trace.h> |
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[c6eead1] | 12 | #include "rtl-unwind.h" |
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| 13 | #include "rtl-unwind-dw2.h" |
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| 14 | |
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| 15 | uint32_t |
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[f59d435d] | 16 | rtems_rtl_elf_section_flags (const rtems_rtl_obj* obj, |
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| 17 | const Elf_Shdr* shdr) |
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[c6eead1] | 18 | { |
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| 19 | return 0; |
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| 20 | } |
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[ae5fe7e6] | 21 | |
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[6c9f017] | 22 | uint32_t |
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| 23 | rtems_rtl_elf_arch_parse_section (const rtems_rtl_obj* obj, |
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| 24 | int section, |
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| 25 | const char* name, |
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| 26 | const Elf_Shdr* shdr, |
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| 27 | const uint32_t flags) |
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| 28 | { |
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| 29 | (void) obj; |
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| 30 | (void) section; |
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| 31 | (void) name; |
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| 32 | (void) shdr; |
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| 33 | return flags; |
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| 34 | } |
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| 35 | |
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| 36 | bool |
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| 37 | rtems_rtl_elf_arch_section_alloc (const rtems_rtl_obj* obj, |
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| 38 | rtems_rtl_obj_sect* sect) |
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| 39 | { |
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| 40 | (void) obj; |
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| 41 | (void) sect; |
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| 42 | return false; |
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| 43 | } |
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| 44 | |
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| 45 | bool |
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| 46 | rtems_rtl_elf_arch_section_free (const rtems_rtl_obj* obj, |
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| 47 | rtems_rtl_obj_sect* sect) |
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| 48 | { |
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| 49 | (void) obj; |
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| 50 | (void) sect; |
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| 51 | return false; |
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| 52 | } |
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| 53 | |
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[ae5fe7e6] | 54 | bool |
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| 55 | rtems_rtl_elf_rel_resolve_sym (Elf_Word type) |
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| 56 | { |
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| 57 | return true; |
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| 58 | } |
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| 59 | |
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[d8c70ba6] | 60 | size_t |
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| 61 | rtems_rtl_elf_relocate_tramp_max_size (void) |
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| 62 | { |
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| 63 | /* |
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| 64 | * Disable by returning 0. |
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| 65 | */ |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |
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[b36c5209] | 69 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 70 | rtems_rtl_elf_relocate_rela_tramp (rtems_rtl_obj* obj, |
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| 71 | const Elf_Rela* rela, |
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| 72 | const rtems_rtl_obj_sect* sect, |
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| 73 | const char* symname, |
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| 74 | const Elf_Byte syminfo, |
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| 75 | const Elf_Word symvalue) |
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| 76 | { |
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| 77 | (void) obj; |
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| 78 | (void) rela; |
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| 79 | (void) sect; |
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| 80 | (void) symname; |
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| 81 | (void) syminfo; |
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| 82 | (void) symvalue; |
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[b36c5209] | 83 | return rtems_rtl_elf_rel_no_error; |
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[d8c70ba6] | 84 | } |
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| 85 | |
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[b36c5209] | 86 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 87 | rtems_rtl_elf_relocate_rela (rtems_rtl_obj* obj, |
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[f59d435d] | 88 | const Elf_Rela* rela, |
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| 89 | const rtems_rtl_obj_sect* sect, |
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| 90 | const char* symname, |
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| 91 | const Elf_Byte syminfo, |
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| 92 | const Elf_Word symvalue) |
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[ae5fe7e6] | 93 | { |
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[f59d435d] | 94 | Elf_Addr *where; |
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| 95 | Elf_Word tmp; |
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[ae5fe7e6] | 96 | |
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| 97 | where = (Elf_Addr *)(sect->base + rela->r_offset); |
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| 98 | |
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| 99 | if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) { |
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| 100 | printf("rela relocation type is %ld\n", ELF_R_TYPE(rela->r_info)); |
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| 101 | printf("relocated address 0x%08lx\n", (Elf_Addr)where); |
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| 102 | } |
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| 103 | |
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| 104 | tmp = symvalue; |
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| 105 | switch (ELF_R_TYPE(rela->r_info)) { |
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| 106 | case R_TYPE(NONE): |
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| 107 | break; |
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| 108 | |
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| 109 | case R_TYPE(DIR16): |
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| 110 | *(uint16_t *)where += symvalue + rela->r_addend; |
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| 111 | break; |
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| 112 | |
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| 113 | case R_TYPE(DIR32): |
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| 114 | case R_TYPE(DIR32A16): |
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| 115 | *where += symvalue + rela->r_addend; |
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| 116 | break; |
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| 117 | |
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| 118 | case R_TYPE(DIR24A8): |
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| 119 | if (ELF32_R_SYM(rela->r_info)) |
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| 120 | *where += symvalue + rela->r_addend; |
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| 121 | break; |
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| 122 | |
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| 123 | case R_TYPE(DIR24R8): |
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| 124 | where = (uint32_t *)((uint32_t)where - 1); |
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| 125 | *where = (*where & 0xff000000) | ((*where & 0xffffff) + symvalue + rela->r_addend); |
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| 126 | break; |
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| 127 | |
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| 128 | case R_TYPE(PCREL8): |
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| 129 | /* bcc instruction */ |
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| 130 | tmp = symvalue + rela->r_addend - (Elf_Addr)where - 1; |
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| 131 | if (((Elf32_Sword)tmp > 0x7f) || ((Elf32_Sword)tmp < -(Elf32_Sword)0x80)){ |
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| 132 | printf("PCREL8 overflow\n"); |
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[b36c5209] | 133 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 134 | } else { |
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| 135 | *(uint8_t *)where = tmp; |
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| 136 | } |
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| 137 | break; |
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| 138 | |
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| 139 | case R_TYPE(PCREL16): |
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| 140 | /* bcc instruction */ |
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| 141 | tmp = symvalue + rela->r_addend - (Elf_Addr)where - 2; |
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| 142 | if (((Elf32_Sword)tmp > 0x7fff) || ((Elf32_Sword)tmp < -(Elf32_Sword)0x8000)){ |
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| 143 | printf("PCREL16 overflow\n"); |
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[b36c5209] | 144 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 145 | } else { |
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| 146 | *(uint16_t *)where = tmp; |
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| 147 | } |
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| 148 | break; |
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| 149 | |
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| 150 | default: |
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| 151 | rtems_rtl_set_error (EINVAL, "rela type record not supported"); |
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| 152 | printf("Unsupported reloc types\n"); |
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[b36c5209] | 153 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 154 | } |
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[b36c5209] | 155 | return rtems_rtl_elf_rel_no_error; |
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[ae5fe7e6] | 156 | } |
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| 157 | |
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[b36c5209] | 158 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 159 | rtems_rtl_elf_relocate_rel_tramp (rtems_rtl_obj* obj, |
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| 160 | const Elf_Rel* rel, |
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| 161 | const rtems_rtl_obj_sect* sect, |
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| 162 | const char* symname, |
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| 163 | const Elf_Byte syminfo, |
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| 164 | const Elf_Word symvalue) |
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| 165 | { |
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| 166 | (void) obj; |
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| 167 | (void) rel; |
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| 168 | (void) sect; |
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| 169 | (void) symname; |
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| 170 | (void) syminfo; |
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| 171 | (void) symvalue; |
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| 172 | rtems_rtl_set_error (EINVAL, "rel type record not supported"); |
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[b36c5209] | 173 | return rtems_rtl_elf_rel_failure; |
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[d8c70ba6] | 174 | } |
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| 175 | |
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[b36c5209] | 176 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 177 | rtems_rtl_elf_relocate_rel (rtems_rtl_obj* obj, |
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[f59d435d] | 178 | const Elf_Rel* rel, |
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| 179 | const rtems_rtl_obj_sect* sect, |
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| 180 | const char* symname, |
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| 181 | const Elf_Byte syminfo, |
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| 182 | const Elf_Word symvalue) |
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[ae5fe7e6] | 183 | { |
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[d8c70ba6] | 184 | (void) obj; |
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| 185 | (void) rel; |
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| 186 | (void) sect; |
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| 187 | (void) symname; |
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| 188 | (void) syminfo; |
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| 189 | (void) symvalue; |
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[ae5fe7e6] | 190 | rtems_rtl_set_error (EINVAL, "rel type record not supported"); |
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[b36c5209] | 191 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 192 | } |
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[c6eead1] | 193 | |
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| 194 | bool |
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[f59d435d] | 195 | rtems_rtl_elf_unwind_parse (const rtems_rtl_obj* obj, |
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| 196 | const char* name, |
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| 197 | uint32_t flags) |
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[c6eead1] | 198 | { |
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| 199 | return rtems_rtl_elf_unwind_dw2_parse (obj, name, flags); |
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| 200 | } |
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| 201 | |
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| 202 | bool |
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[f59d435d] | 203 | rtems_rtl_elf_unwind_register (rtems_rtl_obj* obj) |
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[c6eead1] | 204 | { |
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| 205 | return rtems_rtl_elf_unwind_dw2_register (obj); |
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| 206 | } |
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| 207 | |
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| 208 | bool |
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[f59d435d] | 209 | rtems_rtl_elf_unwind_deregister (rtems_rtl_obj* obj) |
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[c6eead1] | 210 | { |
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| 211 | return rtems_rtl_elf_unwind_dw2_deregister (obj); |
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| 212 | } |
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