[ae5fe7e6] | 1 | #include <sys/cdefs.h> |
---|
| 2 | |
---|
| 3 | #include <errno.h> |
---|
| 4 | #include <stdio.h> |
---|
| 5 | #include <sys/types.h> |
---|
| 6 | #include <sys/stat.h> |
---|
| 7 | |
---|
| 8 | #include <rtems/rtl/rtl.h> |
---|
| 9 | #include "rtl-elf.h" |
---|
| 10 | #include "rtl-error.h" |
---|
[990adc5] | 11 | #include <rtems/rtl/rtl-trace.h> |
---|
[c6eead1] | 12 | #include "rtl-unwind.h" |
---|
| 13 | #include "rtl-unwind-dw2.h" |
---|
| 14 | |
---|
| 15 | uint32_t |
---|
[f59d435d] | 16 | rtems_rtl_elf_section_flags (const rtems_rtl_obj* obj, |
---|
| 17 | const Elf_Shdr* shdr) |
---|
[c6eead1] | 18 | { |
---|
| 19 | return 0; |
---|
| 20 | } |
---|
[ae5fe7e6] | 21 | |
---|
[6c9f017] | 22 | uint32_t |
---|
| 23 | rtems_rtl_elf_arch_parse_section (const rtems_rtl_obj* obj, |
---|
| 24 | int section, |
---|
| 25 | const char* name, |
---|
| 26 | const Elf_Shdr* shdr, |
---|
| 27 | const uint32_t flags) |
---|
| 28 | { |
---|
| 29 | (void) obj; |
---|
| 30 | (void) section; |
---|
| 31 | (void) name; |
---|
| 32 | (void) shdr; |
---|
| 33 | return flags; |
---|
| 34 | } |
---|
| 35 | |
---|
| 36 | bool |
---|
| 37 | rtems_rtl_elf_arch_section_alloc (const rtems_rtl_obj* obj, |
---|
| 38 | rtems_rtl_obj_sect* sect) |
---|
| 39 | { |
---|
| 40 | (void) obj; |
---|
| 41 | (void) sect; |
---|
| 42 | return false; |
---|
| 43 | } |
---|
| 44 | |
---|
| 45 | bool |
---|
| 46 | rtems_rtl_elf_arch_section_free (const rtems_rtl_obj* obj, |
---|
| 47 | rtems_rtl_obj_sect* sect) |
---|
| 48 | { |
---|
| 49 | (void) obj; |
---|
| 50 | (void) sect; |
---|
| 51 | return false; |
---|
| 52 | } |
---|
| 53 | |
---|
[ae5fe7e6] | 54 | bool |
---|
| 55 | rtems_rtl_elf_rel_resolve_sym (Elf_Word type) |
---|
| 56 | { |
---|
| 57 | return true; |
---|
| 58 | } |
---|
| 59 | |
---|
[d8c70ba6] | 60 | size_t |
---|
| 61 | rtems_rtl_elf_relocate_tramp_max_size (void) |
---|
| 62 | { |
---|
| 63 | /* |
---|
| 64 | * Disable by returning 0. |
---|
| 65 | */ |
---|
| 66 | return 0; |
---|
| 67 | } |
---|
| 68 | |
---|
[b36c5209] | 69 | rtems_rtl_elf_rel_status |
---|
[d8c70ba6] | 70 | rtems_rtl_elf_relocate_rela_tramp (rtems_rtl_obj* obj, |
---|
| 71 | const Elf_Rela* rela, |
---|
| 72 | const rtems_rtl_obj_sect* sect, |
---|
| 73 | const char* symname, |
---|
| 74 | const Elf_Byte syminfo, |
---|
| 75 | const Elf_Word symvalue) |
---|
| 76 | { |
---|
| 77 | (void) obj; |
---|
| 78 | (void) rela; |
---|
| 79 | (void) sect; |
---|
| 80 | (void) symname; |
---|
| 81 | (void) syminfo; |
---|
| 82 | (void) symvalue; |
---|
[b36c5209] | 83 | return rtems_rtl_elf_rel_no_error; |
---|
[d8c70ba6] | 84 | } |
---|
| 85 | |
---|
[b36c5209] | 86 | rtems_rtl_elf_rel_status |
---|
[d8c70ba6] | 87 | rtems_rtl_elf_relocate_rela (rtems_rtl_obj* obj, |
---|
[f59d435d] | 88 | const Elf_Rela* rela, |
---|
| 89 | const rtems_rtl_obj_sect* sect, |
---|
| 90 | const char* symname, |
---|
| 91 | const Elf_Byte syminfo, |
---|
| 92 | const Elf_Word symvalue) |
---|
[ae5fe7e6] | 93 | { |
---|
| 94 | Elf_Addr *where; |
---|
| 95 | Elf32_Word tmp; |
---|
| 96 | Elf32_Word insn; |
---|
| 97 | |
---|
| 98 | |
---|
| 99 | where = (Elf_Addr *)(sect->base + rela->r_offset); |
---|
| 100 | |
---|
| 101 | switch (ELF_R_TYPE(rela->r_info)) { |
---|
| 102 | case R_TYPE(NONE): |
---|
| 103 | break; |
---|
| 104 | |
---|
| 105 | case R_TYPE(HI16): |
---|
| 106 | insn = *where; |
---|
| 107 | /* orhi/mvhi instruction |
---|
| 108 | * 31--------26|25-21|20-16|15----0| |
---|
| 109 | * |0 1 1 1 1 0 |rY |rX |imm16 | |
---|
| 110 | */ |
---|
| 111 | if (0x1e == (insn >> 26)) { |
---|
| 112 | insn &= 0xffff0000; |
---|
| 113 | insn |= ((symvalue + rela->r_addend) >> 16); |
---|
| 114 | *where = insn; |
---|
| 115 | } |
---|
| 116 | break; |
---|
| 117 | |
---|
| 118 | case R_TYPE(LO16): |
---|
| 119 | insn = *where; |
---|
| 120 | /* ori instruction |
---|
| 121 | * 31--------26|25-21|20-16|15----0| |
---|
| 122 | * |0 0 1 1 1 0 |rY |rX |imm16 | |
---|
| 123 | */ |
---|
| 124 | if (0xe == (insn >> 26)) { |
---|
| 125 | insn &= 0xffff0000; |
---|
| 126 | insn |= ((symvalue + rela->r_addend) & 0xffff); |
---|
| 127 | *where = insn; |
---|
| 128 | } |
---|
| 129 | break; |
---|
| 130 | |
---|
| 131 | case R_TYPE(CALL): |
---|
| 132 | insn = *where; |
---|
| 133 | /* |
---|
| 134 | * calli instruction |
---|
| 135 | * 31-------26|25---0| |
---|
| 136 | * |1 1 1 1 1 0|imm26 | |
---|
| 137 | * Syntax: call imm26 |
---|
| 138 | * Operation: ra = pc + 4; pc = pc + sign_extend(imm26<<2) |
---|
| 139 | */ |
---|
| 140 | if (0x3e == (insn >> 26)) { |
---|
| 141 | Elf_Sword imm26 = symvalue +rela->r_addend - (Elf_Addr)where; |
---|
| 142 | imm26 = (imm26 >> 2) & 0x3ffffff; |
---|
| 143 | insn = 0xf8000000 + imm26; |
---|
| 144 | *where = insn; |
---|
| 145 | } |
---|
| 146 | break; |
---|
| 147 | |
---|
| 148 | case R_TYPE(BRANCH): |
---|
| 149 | insn = *where; |
---|
| 150 | tmp = symvalue + rela->r_addend - (Elf_Addr)where; |
---|
| 151 | tmp = (Elf32_Sword)tmp >> 2; |
---|
| 152 | if (((Elf32_Sword)tmp > 0x7fff) || ((Elf32_Sword)tmp < -0x8000)){ |
---|
| 153 | printf("BRANCH Overflow\n"); |
---|
[b36c5209] | 154 | return rtems_rtl_elf_rel_failure; |
---|
[ae5fe7e6] | 155 | } |
---|
| 156 | |
---|
| 157 | *where = (*where & 0xffff0000) | (tmp & 0xffff); |
---|
| 158 | break; |
---|
| 159 | |
---|
| 160 | case R_TYPE(32): |
---|
| 161 | *where = symvalue + rela->r_addend; |
---|
| 162 | break; |
---|
| 163 | |
---|
| 164 | default: |
---|
| 165 | rtems_rtl_set_error (EINVAL, "rela type record not supported"); |
---|
| 166 | printf("Unsupported reloc types\n"); |
---|
[b36c5209] | 167 | return rtems_rtl_elf_rel_failure; |
---|
[ae5fe7e6] | 168 | } |
---|
| 169 | |
---|
| 170 | if (rtems_rtl_trace (RTEMS_RTL_TRACE_RELOC)) { |
---|
| 171 | printf("rela relocation type is %ld\n", ELF_R_TYPE(rela->r_info)); |
---|
| 172 | printf("relocated address 0x%08lx\n", (Elf_Addr)where); |
---|
| 173 | } |
---|
[b36c5209] | 174 | |
---|
| 175 | return rtems_rtl_elf_rel_no_error; |
---|
[ae5fe7e6] | 176 | } |
---|
| 177 | |
---|
[b36c5209] | 178 | rtems_rtl_elf_rel_status |
---|
[d8c70ba6] | 179 | rtems_rtl_elf_relocate_rel_tramp (rtems_rtl_obj* obj, |
---|
| 180 | const Elf_Rel* rel, |
---|
| 181 | const rtems_rtl_obj_sect* sect, |
---|
| 182 | const char* symname, |
---|
| 183 | const Elf_Byte syminfo, |
---|
| 184 | const Elf_Word symvalue) |
---|
| 185 | { |
---|
| 186 | (void) obj; |
---|
| 187 | (void) rela; |
---|
| 188 | (void) sect; |
---|
| 189 | (void) symname; |
---|
| 190 | (void) syminfo; |
---|
| 191 | (void) symvalue; |
---|
| 192 | rtems_rtl_set_error (EINVAL, "rel type record not supported"); |
---|
[b36c5209] | 193 | return rtems_rtl_elf_rel_failure; |
---|
[d8c70ba6] | 194 | } |
---|
| 195 | |
---|
[b36c5209] | 196 | rtems_rtl_elf_rel_status |
---|
[d8c70ba6] | 197 | rtems_rtl_elf_relocate_rel (rtems_rtl_obj* obj, |
---|
[f59d435d] | 198 | const Elf_Rel* rel, |
---|
| 199 | const rtems_rtl_obj_sect* sect, |
---|
| 200 | const char* symname, |
---|
| 201 | const Elf_Byte syminfo, |
---|
| 202 | const Elf_Word symvalue) |
---|
[ae5fe7e6] | 203 | { |
---|
[d8c70ba6] | 204 | (void) obj; |
---|
| 205 | (void) rela; |
---|
| 206 | (void) sect; |
---|
| 207 | (void) symname; |
---|
| 208 | (void) syminfo; |
---|
| 209 | (void) symvalue; |
---|
[ae5fe7e6] | 210 | rtems_rtl_set_error (EINVAL, "rela type record not supported"); |
---|
[b36c5209] | 211 | return rtems_rtl_elf_rel_failure; |
---|
[ae5fe7e6] | 212 | } |
---|
[c6eead1] | 213 | |
---|
| 214 | bool |
---|
[f59d435d] | 215 | rtems_rtl_elf_unwind_parse (const rtems_rtl_obj* obj, |
---|
| 216 | const char* name, |
---|
| 217 | uint32_t flags) |
---|
[c6eead1] | 218 | { |
---|
| 219 | return rtems_rtl_elf_unwind_dw2_parse (obj, name, flags); |
---|
| 220 | } |
---|
| 221 | |
---|
| 222 | bool |
---|
[f59d435d] | 223 | rtems_rtl_elf_unwind_register (rtems_rtl_obj* obj) |
---|
[c6eead1] | 224 | { |
---|
| 225 | return rtems_rtl_elf_unwind_dw2_register (obj); |
---|
| 226 | } |
---|
| 227 | |
---|
| 228 | bool |
---|
[f59d435d] | 229 | rtems_rtl_elf_unwind_deregister (rtems_rtl_obj* obj) |
---|
[c6eead1] | 230 | { |
---|
| 231 | return rtems_rtl_elf_unwind_dw2_deregister (obj); |
---|
| 232 | } |
---|