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| Rev 2996 | Rev 2997 | ||
|---|---|---|---|
| Line 96... | Line 96... | ||
| 96 | kputint(-1); |
96 | kputint(-1); |
| 97 | kputint(42); |
97 | kputint(42); |
| 98 | kputint(-1); |
98 | kputint(-1); |
| 99 | } |
99 | } |
| 100 | 100 | ||
| - | 101 | int test_var = 0x818283; |
|
| - | 102 | ||
| 101 | void __bootstrap(void); |
103 | void __bootstrap(void); |
| 102 | 104 | ||
| 103 | void __bootstrap(void) |
105 | void __bootstrap(void) |
| 104 | { |
106 | { |
| 105 | unsigned bias; |
107 | unsigned bias; |
| Line 215... | Line 217... | ||
| 215 | // kputint(rel_type); |
217 | // kputint(rel_type); |
| 216 | // kputint(r_offset); |
218 | // kputint(r_offset); |
| 217 | 219 | ||
| 218 | switch (rel_type) { |
220 | switch (rel_type) { |
| 219 | case R_PPC_JMP_SLOT: |
221 | case R_PPC_JMP_SLOT: |
| 220 | kputint(0xa); |
222 | // kputint(0xa); |
| 221 | sym_idx = ELF32_R_SYM(r_info); |
223 | sym_idx = ELF32_R_SYM(r_info); |
| 222 | 224 | ||
| 223 | sym_addr = sym_table[sym_idx].st_value + bias; |
225 | sym_addr = sym_table[sym_idx].st_value + bias; |
| 224 | kputint(sym_idx); |
226 | // kputint(sym_idx); |
| 225 | kputint(sym_addr); |
227 | // kputint(sym_addr); |
| 226 | 228 | ||
| 227 | // r_ptr should point to a plt entry... |
229 | // r_ptr should point to a plt entry... |
| 228 | uint32_t pidx = (r_ptr - _plt_ent) / 2; |
230 | uint32_t pidx = (r_ptr - _plt_ent) / 2; |
| 229 | if (pidx >= plt_n) { |
231 | if (pidx >= plt_n) { |
| 230 | kputint(0xee00ee0ee00); |
232 | kputint(0xee00ee0ee00); |
| 231 | //while(1); |
233 | while(1); |
| 232 | } |
234 | } |
| 233 | _plt_table[pidx] = sym_addr; |
235 | // _plt_table[pidx] = sym_addr; |
| 234 | // kputint(pidx); |
236 | // kputint(pidx); |
| 235 | // plt[18] = _b(sym_addr, plt + 18); |
237 | plt[18+2*pidx] = _b(sym_addr, &plt[18+2*pidx]); |
| 236 | // kputint(&plt[18]); |
238 | // kputint(&plt[18]); |
| 237 | // kputint(plt[18]); |
239 | // kputint(plt[18]); |
| 238 | // while(1); |
240 | // while(1); |
| 239 | // while(1); |
241 | // while(1); |
| 240 | //*r_ptr = sym_addr; |
242 | //*r_ptr = sym_addr; |
| - | 243 | ||
| 241 | break; |
244 | break; |
| 242 | 245 | ||
| 243 | case R_PPC_ADDR32: |
246 | case R_PPC_ADDR32: |
| 244 | kputint(0xb); |
247 | kputint(0xb); |
| 245 | sym_idx = ELF32_R_SYM(r_info); |
248 | sym_idx = ELF32_R_SYM(r_info); |
| Line 250... | Line 253... | ||
| 250 | 253 | ||
| 251 | *r_ptr = a + sym_addr; |
254 | *r_ptr = a + sym_addr; |
| 252 | break; |
255 | break; |
| 253 | 256 | ||
| 254 | case R_PPC_RELATIVE: |
257 | case R_PPC_RELATIVE: |
| 255 | // kputint(0xc); |
258 | kputint(0xc); |
| 256 | *r_ptr = a + bias; |
259 | *r_ptr = a + bias; |
| 257 | break; |
260 | break; |
| 258 | 261 | ||
| 259 | case R_PPC_REL24: |
262 | case R_PPC_REL24: |
| 260 | kputint(0xd); |
263 | kputint(0xd); |
| Line 282... | Line 285... | ||
| 282 | plt[7] = _lwz(11, __L(_plt_table), 11); // lwz r11, .PLTtable@l(r11) |
285 | plt[7] = _lwz(11, __L(_plt_table), 11); // lwz r11, .PLTtable@l(r11) |
| 283 | plt[8] = _mtctr(11); // mtctr r11 |
286 | plt[8] = _mtctr(11); // mtctr r11 |
| 284 | plt[9] = _bctr(); |
287 | plt[9] = _bctr(); |
| 285 | 288 | ||
| 286 | /* .PLTi, i = 0..N-1 */ |
289 | /* .PLTi, i = 0..N-1 */ |
| 287 | kputint(-4); |
290 | /* kputint(-4); |
| 288 | for (i = 0; i < plt_n; ++i) { |
291 | for (i = 0; i < plt_n; ++i) { |
| 289 | //_plt_table[i] == function address; |
292 | //_plt_table[i] == function address; |
| 290 | plt[18+i] = _b(_plt_call, &plt[18+i]); // b .PLTcall |
293 | plt[18+i] = _b(_plt_call, &plt[18+i]); // b .PLTcall |
| 291 | } |
294 | } |
| 292 | 295 | */ |
|
| 293 | kputint(-5); |
296 | kputint(-5); |
| 294 | kputint(_plt_table[0]); |
297 | kputint(_plt_table[0]); |
| 295 | } |
298 | } |
| 296 | 299 | ||
| - | 300 | kputint(-6); |
|
| 297 | /* This will come in handy */ |
301 | /* This will come in handy */ |
| 298 | runtime_env.rtld_dynamic = dynamic; |
302 | runtime_env.rtld_dynamic = dynamic; |
| 299 | runtime_env.rtld.bias = bias; |
303 | runtime_env.rtld.bias = bias; |
| 300 | 304 | ||
| 301 | // volatile int ff=1; |
305 | // volatile int ff=1; |
| 302 | // while(ff); |
306 | // while(ff); |
| - | 307 | kputint(-7); |
|
| 303 | test_func(); |
308 | test_func(); |
| 304 | kputint(0x42); |
309 | kputint(0x42); |
| - | 310 | kputint(test_var); |
|
| - | 311 | // while(1); |
|
| 305 | // while(1); |
312 | // while(1); |
| 306 | /* Init libc and run rtld main */ |
313 | /* Init libc and run rtld main */ |
| 307 | kputint(0x22); |
314 | kputint(0x22); |
| 308 | __main(); |
315 | __main(); |
| 309 | 316 | ||