[ae5fe7e6] | 1 | |
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| 2 | #include <sys/cdefs.h> |
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| 3 | |
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| 4 | #include <errno.h> |
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| 5 | #include <stdio.h> |
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| 6 | #include <sys/types.h> |
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| 7 | #include <sys/stat.h> |
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| 8 | |
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| 9 | #include <rtems/rtl/rtl.h> |
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| 10 | #include "rtl-elf.h" |
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| 11 | #include "rtl-error.h" |
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[990adc5] | 12 | #include <rtems/rtl/rtl-trace.h> |
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[c6eead1] | 13 | #include "rtl-unwind.h" |
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| 14 | #include "rtl-unwind-dw2.h" |
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| 15 | |
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| 16 | uint32_t |
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[f59d435d] | 17 | rtems_rtl_elf_section_flags (const rtems_rtl_obj* obj, |
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| 18 | const Elf_Shdr* shdr) |
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[c6eead1] | 19 | { |
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| 20 | return 0; |
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| 21 | } |
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[ae5fe7e6] | 22 | |
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[6c9f017] | 23 | uint32_t |
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| 24 | rtems_rtl_elf_arch_parse_section (const rtems_rtl_obj* obj, |
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| 25 | int section, |
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| 26 | const char* name, |
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| 27 | const Elf_Shdr* shdr, |
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| 28 | const uint32_t flags) |
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| 29 | { |
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| 30 | (void) obj; |
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| 31 | (void) section; |
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| 32 | (void) name; |
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| 33 | (void) shdr; |
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| 34 | return flags; |
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| 35 | } |
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| 36 | |
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| 37 | bool |
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| 38 | rtems_rtl_elf_arch_section_alloc (const rtems_rtl_obj* obj, |
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| 39 | rtems_rtl_obj_sect* sect) |
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| 40 | { |
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| 41 | (void) obj; |
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| 42 | (void) sect; |
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| 43 | return false; |
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| 44 | } |
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| 45 | |
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| 46 | bool |
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| 47 | rtems_rtl_elf_arch_section_free (const rtems_rtl_obj* obj, |
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| 48 | rtems_rtl_obj_sect* sect) |
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| 49 | { |
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| 50 | (void) obj; |
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| 51 | (void) sect; |
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| 52 | return false; |
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| 53 | } |
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| 54 | |
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[ae5fe7e6] | 55 | bool |
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| 56 | rtems_rtl_elf_rel_resolve_sym (Elf_Word type) |
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| 57 | { |
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| 58 | return true; |
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| 59 | } |
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| 60 | |
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[d8c70ba6] | 61 | size_t |
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| 62 | rtems_rtl_elf_relocate_tramp_max_size (void) |
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| 63 | { |
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| 64 | /* |
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| 65 | * Disable by returning 0. |
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| 66 | */ |
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| 67 | return 0; |
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| 68 | } |
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| 69 | |
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[b36c5209] | 70 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 71 | rtems_rtl_elf_relocate_rela_tramp (rtems_rtl_obj* obj, |
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| 72 | const Elf_Rela* rela, |
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| 73 | const rtems_rtl_obj_sect* sect, |
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| 74 | const char* symname, |
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| 75 | const Elf_Byte syminfo, |
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| 76 | const Elf_Word symvalue) |
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| 77 | { |
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| 78 | (void) obj; |
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| 79 | (void) rela; |
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| 80 | (void) sect; |
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| 81 | (void) symname; |
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| 82 | (void) syminfo; |
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| 83 | (void) symvalue; |
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[b36c5209] | 84 | return rtems_rtl_elf_rel_no_error; |
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[d8c70ba6] | 85 | } |
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| 86 | |
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[b36c5209] | 87 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 88 | rtems_rtl_elf_relocate_rela (rtems_rtl_obj* obj, |
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[f59d435d] | 89 | const Elf_Rela* rela, |
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| 90 | const rtems_rtl_obj_sect* sect, |
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| 91 | const char* symname, |
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| 92 | const Elf_Byte syminfo, |
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| 93 | const Elf_Word symvalue) |
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[ae5fe7e6] | 94 | { |
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| 95 | Elf_Addr *where; |
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| 96 | Elf_Sword tmp; |
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| 97 | |
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| 98 | where = (Elf_Addr *)(sect->base + rela->r_offset); |
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| 99 | |
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| 100 | /* Handle the not 4byte aligned address carefully */ |
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| 101 | |
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| 102 | switch (ELF_R_TYPE(rela->r_info)) { |
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| 103 | case R_TYPE(NONE): |
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| 104 | break; |
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| 105 | |
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| 106 | case R_TYPE(32): |
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| 107 | *(uint16_t *)where = ((symvalue + rela->r_addend) >> 16) & 0xffff; |
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| 108 | *((uint16_t *)where + 1) = (symvalue + rela->r_addend) & 0xffff; |
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| 109 | |
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| 110 | if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) { |
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| 111 | printf("*where 0x%04x%04x\n", *((uint16_t *)where + 1), *(uint16_t *)where); |
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| 112 | } |
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| 113 | break; |
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| 114 | |
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| 115 | case R_TYPE(PCREL10): |
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| 116 | /* beq, bge, bgeu, bgt, bgtu, ble, bleu, blt, bltu, bne */ |
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| 117 | if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) { |
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| 118 | printf("*where %x\n", *(uint16_t *)where); |
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| 119 | printf("symvalue - where %x\n", (int)(symvalue - (Elf_Word)where)); |
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| 120 | } |
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| 121 | tmp = (symvalue + rela->r_addend - ((Elf_Word)where + 2)); /* pc is the next instruction */ |
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| 122 | tmp = (Elf_Sword)tmp >> 1; |
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| 123 | if (((Elf32_Sword)tmp > 0x1ff) || ((Elf32_Sword)tmp < -(Elf32_Sword)0x200)){ |
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[30ea9bf] | 124 | printf("Overflow for PCREL10: %ld exceed -0x200:0x1ff\n", tmp); |
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[b36c5209] | 125 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 126 | } |
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| 127 | |
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| 128 | *(uint16_t *)where = (*(uint16_t *)where & 0xfc00) | (tmp & 0x3ff); |
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| 129 | |
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| 130 | if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) { |
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| 131 | printf("*where 0x%04x\n", *(uint16_t *)where); |
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| 132 | } |
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| 133 | |
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| 134 | break; |
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| 135 | |
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| 136 | default: |
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| 137 | rtems_rtl_set_error (EINVAL, "rela type record not supported"); |
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| 138 | printf("Unsupported reloc types\n"); |
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[b36c5209] | 139 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 140 | } |
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| 141 | |
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[b36c5209] | 142 | return rtems_rtl_elf_rel_no_error; |
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[ae5fe7e6] | 143 | } |
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| 144 | |
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[b36c5209] | 145 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 146 | rtems_rtl_elf_relocate_rel_tramp (rtems_rtl_obj* obj, |
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| 147 | const Elf_Rel* rel, |
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| 148 | const rtems_rtl_obj_sect* sect, |
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| 149 | const char* symname, |
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| 150 | const Elf_Byte syminfo, |
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| 151 | const Elf_Word symvalue) |
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| 152 | { |
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| 153 | (void) obj; |
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| 154 | (void) rel; |
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| 155 | (void) sect; |
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| 156 | (void) symname; |
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| 157 | (void) syminfo; |
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| 158 | (void) symvalue; |
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| 159 | rtems_rtl_set_error (EINVAL, "rel type record not supported"); |
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[b36c5209] | 160 | return rtems_rtl_elf_rel_failure; |
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[d8c70ba6] | 161 | } |
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| 162 | |
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[b36c5209] | 163 | rtems_rtl_elf_rel_status |
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[d8c70ba6] | 164 | rtems_rtl_elf_relocate_rel (rtems_rtl_obj* obj, |
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[f59d435d] | 165 | const Elf_Rel* rel, |
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| 166 | const rtems_rtl_obj_sect* sect, |
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| 167 | const char* symname, |
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| 168 | const Elf_Byte syminfo, |
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| 169 | const Elf_Word symvalue) |
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[ae5fe7e6] | 170 | { |
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[d8c70ba6] | 171 | (void) obj; |
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| 172 | (void) rel; |
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| 173 | (void) sect; |
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| 174 | (void) symname; |
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| 175 | (void) syminfo; |
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| 176 | (void) symvalue; |
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[ae5fe7e6] | 177 | rtems_rtl_set_error (EINVAL, "rel type record not supported"); |
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[b36c5209] | 178 | return rtems_rtl_elf_rel_failure; |
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[ae5fe7e6] | 179 | } |
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[c6eead1] | 180 | |
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| 181 | bool |
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[f59d435d] | 182 | rtems_rtl_elf_unwind_parse (const rtems_rtl_obj* obj, |
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| 183 | const char* name, |
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| 184 | uint32_t flags) |
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[c6eead1] | 185 | { |
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| 186 | return rtems_rtl_elf_unwind_dw2_parse (obj, name, flags); |
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| 187 | } |
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| 188 | |
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| 189 | bool |
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[f59d435d] | 190 | rtems_rtl_elf_unwind_register (rtems_rtl_obj* obj) |
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[c6eead1] | 191 | { |
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| 192 | return rtems_rtl_elf_unwind_dw2_register (obj); |
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| 193 | } |
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| 194 | |
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| 195 | bool |
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[f59d435d] | 196 | rtems_rtl_elf_unwind_deregister (rtems_rtl_obj* obj) |
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[c6eead1] | 197 | { |
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| 198 | return rtems_rtl_elf_unwind_dw2_deregister (obj); |
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| 199 | } |
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