Changes in / [054476d:73b3ecd] in mainline
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- 4 deleted
- 29 edited
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.bzrignore
r054476d r73b3ecd 3 3 *.prev 4 4 *.ag.probe.[cs] 5 *.lo6 *.la7 *.so.*8 5 Makefile.depend 9 6 Makefile.common -
boot/Makefile.common
r054476d r73b3ecd 158 158 ifeq ($(CONFIG_BUILD_SHARED_LIBS), y) 159 159 RD_LIBS += \ 160 $(USPACE_PATH)/lib/c/libc.so.0 \ 161 $(USPACE_PATH)/lib/softint/libsoftint.so.0 \ 162 $(USPACE_PATH)/lib/math/libmath.so.0 160 $(USPACE_PATH)/lib/c/libc.so0 \ 161 $(USPACE_PATH)/lib/softint/libsofti.so0 163 162 RD_APPS += \ 164 163 $(USPACE_PATH)/app/dltest/dltest -
kernel/arch/ia32/include/arch/barrier.h
r054476d r73b3ecd 54 54 NO_TRACE static inline void cpuid_serialization(void) 55 55 { 56 #ifndef __ PIC__56 #ifndef __IN_SHARED_LIBC__ 57 57 asm volatile ( 58 58 "xorl %%eax, %%eax\n" -
uspace/Makefile.common
r054476d r73b3ecd 203 203 endif 204 204 else 205 BASE_LIBS = $(LIBC_PREFIX)/libc.so .0 $(LIBSOFTINT_PREFIX)/libsoftint.so.0205 BASE_LIBS = $(LIBC_PREFIX)/libc.so0 $(LIBSOFTINT_PREFIX)/libsofti.so0 206 206 LFLAGS += -Bdynamic 207 207 LINKER_SCRIPT ?= $(LIBC_PREFIX)/arch/$(UARCH)/_link-dlexe.ld 208 208 ifeq ($(MATH),y) 209 BASE_LIBS += $(LIBMATH_PREFIX)/libmath.so .0209 BASE_LIBS += $(LIBMATH_PREFIX)/libmath.so0 210 210 endif 211 211 endif … … 270 270 -integrated-as -pipe -g -target $(CLANG_TARGET) -D__$(ENDIANESS)__ 271 271 272 LIB_CFLAGS = $(CFLAGS) -fPIC 272 LIB_CFLAGS = $(CFLAGS) -fPIC -D__IN_SHARED_LIBC__ 273 273 LIB_LFLAGS = $(LFLAGS) -shared -soname $(LSONAME) --whole-archive 274 274 -
uspace/app/corecfg/corecfg.c
r054476d r73b3ecd 37 37 #include <stdio.h> 38 38 39 #define NAME " corecfg"39 #define NAME "dnscfg" 40 40 41 41 static void print_syntax(void) -
uspace/lib/c/Makefile
r054476d r73b3ecd 45 45 LIBRARY = libc 46 46 SLIBRARY = libc.so.0.0 47 LSONAME = libc.so .047 LSONAME = libc.so0 48 48 49 49 LIBS = $(LIBURCU_PREFIX)/liburcu.a … … 79 79 generic/dlfcn.c \ 80 80 generic/elf/elf_load.c \ 81 generic/elf/elf_mod.c \82 81 generic/event.c \ 83 82 generic/errno.c \ -
uspace/lib/c/arch/ia32/src/rtld/reloc.c
r054476d r73b3ecd 69 69 uint32_t sym_size; 70 70 char *str_tab; 71 71 72 72 elf_symbol_t *sym_def; 73 73 module_t *dest; … … 80 80 81 81 DPRINTF("address: 0x%x, entries: %d\n", (uintptr_t)rt, rt_entries); 82 82 83 83 for (i = 0; i < rt_entries; ++i) { 84 84 // DPRINTF("symbol %d: ", i); … … 100 100 // DPRINTF("rel_type: %x, rel_offset: 0x%x\n", rel_type, r_offset); 101 101 sym_def = symbol_def_find(str_tab + sym->st_name, 102 m, ssf_none,&dest);102 m, &dest); 103 103 // DPRINTF("dest name: '%s'\n", dest->dyn.soname); 104 104 // DPRINTF("dest bias: 0x%x\n", dest->bias); … … 137 137 /* 138 138 * Copy symbol data from shared object to specified 139 * location. Need to find the 'source', i.e. the 140 * other instance of the object than the one in the 141 * executable program. 139 * location. 142 140 */ 143 141 DPRINTF("fixup R_386_COPY (s)\n"); 144 145 sym_def = symbol_def_find(str_tab + sym->st_name,146 m, ssf_noroot, &dest);147 148 if (sym_def) {149 sym_addr = (uint32_t)150 symbol_get_addr(sym_def, dest);151 } else {152 printf("Source definition of '%s' not found.\n",153 str_tab + sym->st_name);154 continue;155 }156 157 142 sym_size = sym->st_size; 158 143 if (sym_size != sym_def->st_size) { … … 162 147 sym_size = sym_def->st_size; 163 148 } 164 165 149 memcpy(r_ptr, (const void *)sym_addr, sym_size); 166 150 break; 167 151 168 152 case R_386_RELATIVE: 169 153 DPRINTF("fixup R_386_RELATIVE (b+a)\n"); -
uspace/lib/c/generic/dlfcn.c
r054476d r73b3ecd 42 42 43 43 #include <rtld/module.h> 44 #include <rtld/rtld.h>45 44 #include <rtld/symbol.h> 46 45 … … 57 56 58 57 printf("module_find('%s')\n", path); 59 m = module_find( runtime_env,path);58 m = module_find(path); 60 59 if (m == NULL) { 61 60 printf("NULL. module_load('%s')\n", path); 62 m = module_load( runtime_env,path);61 m = module_load(path); 63 62 printf("module_load_deps(m)\n"); 64 63 module_load_deps(m); … … 82 81 83 82 printf("dlsym(0x%lx, \"%s\")\n", (long)mod, sym_name); 84 sd = symbol_bfs_find(sym_name, (module_t *) mod, ssf_none,&sm);83 sd = symbol_bfs_find(sym_name, (module_t *) mod, &sm); 85 84 if (sd != NULL) { 86 85 return symbol_get_addr(sd, sm); -
uspace/lib/c/generic/elf/elf_load.c
r054476d r73b3ecd 1 1 /* 2 * Copyright (c) 2016 Jiri Svoboda 2 * Copyright (c) 2006 Sergey Bondari 3 * Copyright (c) 2006 Jakub Jermar 4 * Copyright (c) 2011 Jiri Svoboda 3 5 * All rights reserved. 4 6 * … … 34 36 * @file 35 37 * @brief Userspace ELF loader. 36 */ 38 * 39 * This module allows loading ELF binaries (both executables and 40 * shared objects) from VFS. The current implementation allocates 41 * anonymous memory, fills it with segment data and then adjusts 42 * the memory areas' flags to the final value. In the future, 43 * the segments will be mapped directly from the file. 44 */ 45 46 #include <stdio.h> 47 #include <sys/types.h> 48 #include <align.h> 49 #include <assert.h> 50 #include <as.h> 51 #include <elf/elf.h> 52 #include <unistd.h> 53 #include <fcntl.h> 54 #include <smc.h> 55 #include <loader/pcb.h> 56 #include <entry_point.h> 37 57 38 58 #include <elf/elf_load.h> 39 #include <elf/elf_mod.h>40 #include <errno.h>41 #include <stdio.h>42 #include <stdlib.h>43 44 #ifdef CONFIG_RTLD45 #include <rtld/rtld.h>46 #endif47 59 48 60 #define DPRINTF(...) 49 61 50 /** Load ELF program. 51 * 52 * @param file_name File name 53 * @param info Place to store ELF program information 54 * @return EOK on success or non-zero error code 55 */ 56 int elf_load(const char *file_name, elf_info_t *info) 57 { 58 #ifdef CONFIG_RTLD 59 rtld_t *env; 60 #endif 62 static const char *error_codes[] = { 63 "no error", 64 "invalid image", 65 "address space error", 66 "incompatible image", 67 "unsupported image type", 68 "irrecoverable error" 69 }; 70 71 static unsigned int elf_load(elf_ld_t *elf, size_t so_bias); 72 static int segment_header(elf_ld_t *elf, elf_segment_header_t *entry); 73 static int section_header(elf_ld_t *elf, elf_section_header_t *entry); 74 static int load_segment(elf_ld_t *elf, elf_segment_header_t *entry); 75 76 /** Load ELF binary from a file. 77 * 78 * Load an ELF binary from the specified file. If the file is 79 * an executable program, it is loaded unbiased. If it is a shared 80 * object, it is loaded with the bias @a so_bias. Some information 81 * extracted from the binary is stored in a elf_info_t structure 82 * pointed to by @a info. 83 * 84 * @param file_name Path to the ELF file. 85 * @param so_bias Bias to use if the file is a shared object. 86 * @param info Pointer to a structure for storing information 87 * extracted from the binary. 88 * 89 * @return EOK on success or negative error code. 90 * 91 */ 92 int elf_load_file(const char *file_name, size_t so_bias, eld_flags_t flags, 93 elf_info_t *info) 94 { 95 elf_ld_t elf; 96 97 int fd; 61 98 int rc; 62 99 63 rc = elf_load_file(file_name, 0, 0, &info->finfo); 64 if (rc != EE_OK) { 65 DPRINTF("Failed to load executable '%s'.\n", file_name); 66 return rc; 67 } 68 69 if (info->finfo.interp == NULL) { 70 /* Statically linked program */ 71 DPRINTF("Binary is statically linked.\n"); 72 info->env = NULL; 73 return EE_OK; 74 } 75 76 DPRINTF("Binary is dynamically linked.\n"); 77 #ifdef CONFIG_RTLD 78 DPRINTF( "- prog dynamic: %p\n", info->finfo.dynamic); 79 80 rc = rtld_prog_process(&info->finfo, &env); 81 info->env = env; 82 #else 83 rc = EE_UNSUPPORTED; 84 #endif 100 fd = open(file_name, O_RDONLY); 101 if (fd < 0) { 102 DPRINTF("failed opening file\n"); 103 return -1; 104 } 105 106 elf.fd = fd; 107 elf.info = info; 108 elf.flags = flags; 109 110 rc = elf_load(&elf, so_bias); 111 112 close(fd); 113 85 114 return rc; 86 115 } 87 116 88 /** Set ELF-related PCB entries.117 /** Create the program control block (PCB). 89 118 * 90 119 * Fills the program control block @a pcb with information from … … 92 121 * 93 122 * @param info Program info structure 94 * @param pcb PCB 95 */ 96 void elf_set_pcb(elf_info_t *info, pcb_t *pcb) 97 { 98 pcb->entry = info->finfo.entry; 99 pcb->dynamic = info->finfo.dynamic; 100 pcb->rtld_runtime = info->env; 123 * @return EOK on success or negative error code 124 */ 125 void elf_create_pcb(elf_info_t *info, pcb_t *pcb) 126 { 127 pcb->entry = info->entry; 128 pcb->dynamic = info->dynamic; 129 pcb->rtld_runtime = NULL; 130 } 131 132 133 /** Load an ELF binary. 134 * 135 * The @a elf structure contains the loader state, including 136 * an open file, from which the binary will be loaded, 137 * a pointer to the @c info structure etc. 138 * 139 * @param elf Pointer to loader state buffer. 140 * @param so_bias Bias to use if the file is a shared object. 141 * @return EE_OK on success or EE_xx error code. 142 */ 143 static unsigned int elf_load(elf_ld_t *elf, size_t so_bias) 144 { 145 elf_header_t header_buf; 146 elf_header_t *header = &header_buf; 147 int i, rc; 148 149 rc = read(elf->fd, header, sizeof(elf_header_t)); 150 if (rc != sizeof(elf_header_t)) { 151 DPRINTF("Read error.\n"); 152 return EE_INVALID; 153 } 154 155 elf->header = header; 156 157 /* Identify ELF */ 158 if (header->e_ident[EI_MAG0] != ELFMAG0 || 159 header->e_ident[EI_MAG1] != ELFMAG1 || 160 header->e_ident[EI_MAG2] != ELFMAG2 || 161 header->e_ident[EI_MAG3] != ELFMAG3) { 162 DPRINTF("Invalid header.\n"); 163 return EE_INVALID; 164 } 165 166 /* Identify ELF compatibility */ 167 if (header->e_ident[EI_DATA] != ELF_DATA_ENCODING || 168 header->e_machine != ELF_MACHINE || 169 header->e_ident[EI_VERSION] != EV_CURRENT || 170 header->e_version != EV_CURRENT || 171 header->e_ident[EI_CLASS] != ELF_CLASS) { 172 DPRINTF("Incompatible data/version/class.\n"); 173 return EE_INCOMPATIBLE; 174 } 175 176 if (header->e_phentsize != sizeof(elf_segment_header_t)) { 177 DPRINTF("e_phentsize:%d != %d\n", header->e_phentsize, 178 sizeof(elf_segment_header_t)); 179 return EE_INCOMPATIBLE; 180 } 181 182 if (header->e_shentsize != sizeof(elf_section_header_t)) { 183 DPRINTF("e_shentsize:%d != %d\n", header->e_shentsize, 184 sizeof(elf_section_header_t)); 185 return EE_INCOMPATIBLE; 186 } 187 188 /* Check if the object type is supported. */ 189 if (header->e_type != ET_EXEC && header->e_type != ET_DYN) { 190 DPRINTF("Object type %d is not supported\n", header->e_type); 191 return EE_UNSUPPORTED; 192 } 193 194 /* Shared objects can be loaded with a bias */ 195 if (header->e_type == ET_DYN) 196 elf->bias = so_bias; 197 else 198 elf->bias = 0; 199 200 elf->info->interp = NULL; 201 elf->info->dynamic = NULL; 202 203 /* Walk through all segment headers and process them. */ 204 for (i = 0; i < header->e_phnum; i++) { 205 elf_segment_header_t segment_hdr; 206 207 /* Seek to start of segment header */ 208 lseek(elf->fd, header->e_phoff 209 + i * sizeof(elf_segment_header_t), SEEK_SET); 210 211 rc = read(elf->fd, &segment_hdr, 212 sizeof(elf_segment_header_t)); 213 if (rc != sizeof(elf_segment_header_t)) { 214 DPRINTF("Read error.\n"); 215 return EE_INVALID; 216 } 217 218 rc = segment_header(elf, &segment_hdr); 219 if (rc != EE_OK) 220 return rc; 221 } 222 223 DPRINTF("Parse sections.\n"); 224 225 /* Inspect all section headers and proccess them. */ 226 for (i = 0; i < header->e_shnum; i++) { 227 elf_section_header_t section_hdr; 228 229 /* Seek to start of section header */ 230 lseek(elf->fd, header->e_shoff 231 + i * sizeof(elf_section_header_t), SEEK_SET); 232 233 rc = read(elf->fd, §ion_hdr, 234 sizeof(elf_section_header_t)); 235 if (rc != sizeof(elf_section_header_t)) { 236 DPRINTF("Read error.\n"); 237 return EE_INVALID; 238 } 239 240 rc = section_header(elf, §ion_hdr); 241 if (rc != EE_OK) 242 return rc; 243 } 244 245 elf->info->entry = 246 (entry_point_t)((uint8_t *)header->e_entry + elf->bias); 247 248 DPRINTF("Done.\n"); 249 250 return EE_OK; 251 } 252 253 /** Print error message according to error code. 254 * 255 * @param rc Return code returned by elf_load(). 256 * 257 * @return NULL terminated description of error. 258 */ 259 const char *elf_error(unsigned int rc) 260 { 261 assert(rc < sizeof(error_codes) / sizeof(char *)); 262 263 return error_codes[rc]; 264 } 265 266 /** Process segment header. 267 * 268 * @param entry Segment header. 269 * 270 * @return EE_OK on success, error code otherwise. 271 */ 272 static int segment_header(elf_ld_t *elf, elf_segment_header_t *entry) 273 { 274 switch (entry->p_type) { 275 case PT_NULL: 276 case PT_PHDR: 277 case PT_NOTE: 278 break; 279 case PT_LOAD: 280 return load_segment(elf, entry); 281 break; 282 case PT_INTERP: 283 /* Assume silently interp == "/app/dload" */ 284 elf->info->interp = "/app/dload"; 285 break; 286 case PT_DYNAMIC: 287 /* Record pointer to dynamic section into info structure */ 288 elf->info->dynamic = 289 (void *)((uint8_t *)entry->p_vaddr + elf->bias); 290 DPRINTF("dynamic section found at 0x%x\n", 291 (uintptr_t)elf->info->dynamic); 292 break; 293 case 0x70000000: 294 /* FIXME: MIPS reginfo */ 295 break; 296 case PT_SHLIB: 297 // case PT_LOPROC: 298 // case PT_HIPROC: 299 default: 300 DPRINTF("Segment p_type %d unknown.\n", entry->p_type); 301 return EE_UNSUPPORTED; 302 break; 303 } 304 return EE_OK; 305 } 306 307 /** Load segment described by program header entry. 308 * 309 * @param elf Loader state. 310 * @param entry Program header entry describing segment to be loaded. 311 * 312 * @return EE_OK on success, error code otherwise. 313 */ 314 int load_segment(elf_ld_t *elf, elf_segment_header_t *entry) 315 { 316 void *a; 317 int flags = 0; 318 uintptr_t bias; 319 uintptr_t base; 320 void *seg_ptr; 321 uintptr_t seg_addr; 322 size_t mem_sz; 323 ssize_t rc; 324 325 bias = elf->bias; 326 327 seg_addr = entry->p_vaddr + bias; 328 seg_ptr = (void *) seg_addr; 329 330 DPRINTF("Load segment at addr %p, size 0x%x\n", (void *) seg_addr, 331 entry->p_memsz); 332 333 if (entry->p_align > 1) { 334 if ((entry->p_offset % entry->p_align) != 335 (seg_addr % entry->p_align)) { 336 DPRINTF("Align check 1 failed offset%%align=%d, " 337 "vaddr%%align=%d\n", 338 entry->p_offset % entry->p_align, 339 seg_addr % entry->p_align 340 ); 341 return EE_INVALID; 342 } 343 } 344 345 /* Final flags that will be set for the memory area */ 346 347 if (entry->p_flags & PF_X) 348 flags |= AS_AREA_EXEC; 349 if (entry->p_flags & PF_W) 350 flags |= AS_AREA_WRITE; 351 if (entry->p_flags & PF_R) 352 flags |= AS_AREA_READ; 353 flags |= AS_AREA_CACHEABLE; 354 355 base = ALIGN_DOWN(entry->p_vaddr, PAGE_SIZE); 356 mem_sz = entry->p_memsz + (entry->p_vaddr - base); 357 358 DPRINTF("Map to seg_addr=%p-%p.\n", (void *) seg_addr, 359 (void *) (entry->p_vaddr + bias + 360 ALIGN_UP(entry->p_memsz, PAGE_SIZE))); 361 362 /* 363 * For the course of loading, the area needs to be readable 364 * and writeable. 365 */ 366 a = as_area_create((uint8_t *) base + bias, mem_sz, 367 AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE); 368 if (a == AS_MAP_FAILED) { 369 DPRINTF("memory mapping failed (0x%x, %d)\n", 370 base + bias, mem_sz); 371 return EE_MEMORY; 372 } 373 374 DPRINTF("as_area_create(%p, %#zx, %d) -> %p\n", 375 (void *) (base + bias), mem_sz, flags, (void *) a); 376 377 /* 378 * Load segment data 379 */ 380 rc = lseek(elf->fd, entry->p_offset, SEEK_SET); 381 if (rc < 0) { 382 printf("seek error\n"); 383 return EE_INVALID; 384 } 385 386 /* rc = read(fd, (void *)(entry->p_vaddr + bias), entry->p_filesz); 387 if (rc < 0) { printf("read error\n"); return EE_INVALID; }*/ 388 389 /* Long reads are not possible yet. Load segment piecewise. */ 390 391 unsigned left, now; 392 uint8_t *dp; 393 394 left = entry->p_filesz; 395 dp = seg_ptr; 396 397 while (left > 0) { 398 now = 16384; 399 if (now > left) now = left; 400 401 rc = read(elf->fd, dp, now); 402 403 if (rc != (ssize_t) now) { 404 DPRINTF("Read error.\n"); 405 return EE_INVALID; 406 } 407 408 left -= now; 409 dp += now; 410 } 411 412 /* 413 * The caller wants to modify the segments first. He will then 414 * need to set the right access mode and ensure SMC coherence. 415 */ 416 if ((elf->flags & ELDF_RW) != 0) return EE_OK; 417 418 // printf("set area flags to %d\n", flags); 419 rc = as_area_change_flags(seg_ptr, flags); 420 if (rc != 0) { 421 DPRINTF("Failed to set memory area flags.\n"); 422 return EE_MEMORY; 423 } 424 425 if (flags & AS_AREA_EXEC) { 426 /* Enforce SMC coherence for the segment */ 427 if (smc_coherence(seg_ptr, entry->p_filesz)) 428 return EE_MEMORY; 429 } 430 431 return EE_OK; 432 } 433 434 /** Process section header. 435 * 436 * @param elf Loader state. 437 * @param entry Segment header. 438 * 439 * @return EE_OK on success, error code otherwise. 440 */ 441 static int section_header(elf_ld_t *elf, elf_section_header_t *entry) 442 { 443 switch (entry->sh_type) { 444 case SHT_PROGBITS: 445 if (entry->sh_flags & SHF_TLS) { 446 /* .tdata */ 447 } 448 break; 449 case SHT_NOBITS: 450 if (entry->sh_flags & SHF_TLS) { 451 /* .tbss */ 452 } 453 break; 454 case SHT_DYNAMIC: 455 /* Record pointer to dynamic section into info structure */ 456 elf->info->dynamic = 457 (void *)((uint8_t *)entry->sh_addr + elf->bias); 458 DPRINTF("Dynamic section found at %p.\n", 459 (void *) elf->info->dynamic); 460 break; 461 default: 462 break; 463 } 464 465 return EE_OK; 101 466 } 102 467 -
uspace/lib/c/generic/libc.c
r054476d r73b3ecd 89 89 char **argv; 90 90 91 #ifdef CONFIG_RTLD91 #ifdef __IN_SHARED_LIBC__ 92 92 if (__pcb != NULL && __pcb->rtld_runtime != NULL) { 93 runtime_env = (r tld_t *) __pcb->rtld_runtime;93 runtime_env = (runtime_env_t *) __pcb->rtld_runtime; 94 94 } 95 95 #endif -
uspace/lib/c/generic/rtld/module.c
r054476d r73b3ecd 91 91 * path components are ignored. 92 92 */ 93 module_t *module_find( rtld_t *rtld,const char *name)93 module_t *module_find(const char *name) 94 94 { 95 95 const char *p, *soname; … … 106 106 107 107 /* Traverse list of all modules. Not extremely fast, but simple */ 108 list_foreach(r tld->modules, modules_link, module_t, m) {108 list_foreach(runtime_env->modules, modules_link, module_t, m) { 109 109 DPRINTF("m = %p\n", m); 110 110 if (str_cmp(m->dyn.soname, soname) == 0) { … … 122 122 * Currently this trivially tries to load '/<name>'. 123 123 */ 124 module_t *module_load( rtld_t *rtld,const char *name)125 { 126 elf_ finfo_t info;124 module_t *module_load(const char *name) 125 { 126 elf_info_t info; 127 127 char name_buf[NAME_BUF_SIZE]; 128 128 module_t *m; … … 135 135 } 136 136 137 m->rtld = rtld;138 139 137 if (str_size(name) > NAME_BUF_SIZE - 2) { 140 138 printf("soname too long. increase NAME_BUF_SIZE\n"); … … 147 145 148 146 /* FIXME: need to real allocation of address space */ 149 m->bias = r tld->next_bias;150 r tld->next_bias += 0x100000;147 m->bias = runtime_env->next_bias; 148 runtime_env->next_bias += 0x100000; 151 149 152 150 DPRINTF("filename:'%s'\n", name_buf); … … 173 171 174 172 /* Insert into the list of loaded modules */ 175 list_append(&m->modules_link, &r tld->modules);173 list_append(&m->modules_link, &runtime_env->modules); 176 174 177 175 return m; … … 223 221 224 222 DPRINTF("%s needs %s\n", m->dyn.soname, dep_name); 225 dm = module_find( m->rtld,dep_name);223 dm = module_find(dep_name); 226 224 if (!dm) { 227 dm = module_load( m->rtld,dep_name);225 dm = module_load(dep_name); 228 226 module_load_deps(dm); 229 227 } … … 243 241 * @param start The module where to start from. 244 242 */ 245 void modules_process_relocs( rtld_t *rtld,module_t *start)246 { 247 list_foreach(r tld->modules, modules_link, module_t, m) {248 /* Skip rtld module, since it has already been processed */249 if (m != &r tld->rtld) {243 void modules_process_relocs(module_t *start) 244 { 245 list_foreach(runtime_env->modules, modules_link, module_t, m) { 246 /* Skip rtld, since it has already been processed */ 247 if (m != &runtime_env->rtld) { 250 248 module_process_relocs(m); 251 249 } … … 255 253 /** Clear BFS tags of all modules. 256 254 */ 257 void modules_untag( rtld_t *rtld)258 { 259 list_foreach(r tld->modules, modules_link, module_t, m) {255 void modules_untag(void) 256 { 257 list_foreach(runtime_env->modules, modules_link, module_t, m) { 260 258 m->bfs_tag = false; 261 259 } -
uspace/lib/c/generic/rtld/rtld.c
r054476d r73b3ecd 35 35 */ 36 36 37 #include <errno.h>38 #include <rtld/module.h>39 37 #include <rtld/rtld.h> 40 #include <rtld/rtld_debug.h>41 #include <stdlib.h>42 38 43 rtld_t *runtime_env; 44 static rtld_t rt_env_static; 45 static module_t prog_mod; 39 runtime_env_t *runtime_env; 40 static runtime_env_t rt_env_static; 46 41 47 /** Initialize the runtime linker for use in a statically-linked executable. */42 /** Initialize the loder for use in a statically-linked binary. */ 48 43 void rtld_init_static(void) 49 44 { … … 54 49 } 55 50 56 /** Initialize and process a dynamically linked executable.57 *58 * @param p_info Program info59 * @return EOK on success or non-zero error code60 */61 int rtld_prog_process(elf_finfo_t *p_info, rtld_t **rre)62 {63 rtld_t *env;64 65 DPRINTF("Load dynamically linked program.\n");66 67 /* Allocate new RTLD environment to pass to the loaded program */68 env = calloc(1, sizeof(rtld_t));69 if (env == NULL)70 return ENOMEM;71 72 /*73 * First we need to process dynamic sections of the executable74 * program and insert it into the module graph.75 */76 77 DPRINTF("Parse program .dynamic section at %p\n", p_info->dynamic);78 dynamic_parse(p_info->dynamic, 0, &prog_mod.dyn);79 prog_mod.bias = 0;80 prog_mod.dyn.soname = "[program]";81 prog_mod.rtld = env;82 83 /* Initialize list of loaded modules */84 list_initialize(&env->modules);85 list_append(&prog_mod.modules_link, &env->modules);86 87 /* Pointer to program module. Used as root of the module graph. */88 env->program = &prog_mod;89 90 /* Work around non-existent memory space allocation. */91 env->next_bias = 0x1000000;92 93 /*94 * Now we can continue with loading all other modules.95 */96 97 DPRINTF("Load all program dependencies\n");98 module_load_deps(&prog_mod);99 100 /*101 * Now relocate/link all modules together.102 */103 104 /* Process relocations in all modules */105 DPRINTF("Relocate all modules\n");106 modules_process_relocs(env, &prog_mod);107 108 *rre = env;109 return EOK;110 }111 112 51 /** @} 113 52 */ -
uspace/lib/c/generic/rtld/symbol.c
r054476d r73b3ecd 39 39 40 40 #include <elf/elf.h> 41 #include <rtld/module.h>42 41 #include <rtld/rtld.h> 43 42 #include <rtld/rtld_debug.h> … … 112 111 * @param name Name of the symbol to search for. 113 112 * @param start Module in which to start the search.. 114 * @param flags @c ssf_none or @c ssf_noroot to not look for the symbol115 * in @a start116 113 * @param mod (output) Will be filled with a pointer to the module 117 114 * that contains the symbol. 118 115 */ 119 elf_symbol_t *symbol_bfs_find(const char *name, module_t *start, 120 symbol_search_flags_t flags, module_t **mod) 116 elf_symbol_t *symbol_bfs_find(const char *name, module_t *start, module_t **mod) 121 117 { 122 118 module_t *m, *dm; … … 133 129 134 130 /* Mark all vertices (modules) as unvisited */ 135 modules_untag( start->rtld);131 modules_untag(); 136 132 137 133 /* Insert root (the program) into the queue and tag it */ … … 149 145 list_remove(&m->queue_link); 150 146 151 /* If ssf_noroot is specified, do not look in start module */ 152 if (m != start || (flags & ssf_noroot) == 0) { 153 s = def_find_in_module(name, m); 154 if (s != NULL) { 155 /* Symbol found */ 156 sym = s; 157 *mod = m; 158 break; 159 } 147 s = def_find_in_module(name, m); 148 if (s != NULL) { 149 /* Symbol found */ 150 sym = s; 151 *mod = m; 152 break; 160 153 } 161 154 … … 186 179 187 180 188 /** Find the definition of a symbol. 181 /** Find the definition of a symbol.. 189 182 * 190 183 * By definition in System V ABI, if module origin has the flag DT_SYMBOLIC, … … 195 188 * @param name Name of the symbol to search for. 196 189 * @param origin Module in which the dependency originates. 197 * @param flags @c ssf_none or @c ssf_noroot to not look for the symbol198 * in the executable program.199 190 * @param mod (output) Will be filled with a pointer to the module 200 191 * that contains the symbol. 201 192 */ 202 elf_symbol_t *symbol_def_find(const char *name, module_t *origin, 203 symbol_search_flags_t flags, module_t **mod) 193 elf_symbol_t *symbol_def_find(const char *name, module_t *origin, module_t **mod) 204 194 { 205 195 elf_symbol_t *s; … … 220 210 /* Not DT_SYMBOLIC or no match. Now try other locations. */ 221 211 222 if ( origin->rtld->program) {212 if (runtime_env->program) { 223 213 /* Program is dynamic -- start with program as root. */ 224 return symbol_bfs_find(name, origin->rtld->program, flags, mod);214 return symbol_bfs_find(name, runtime_env->program, mod); 225 215 } else { 226 216 /* Program is static -- start with @a origin as root. */ 227 return symbol_bfs_find(name, origin, ssf_none,mod);217 return symbol_bfs_find(name, origin, mod); 228 218 } 229 219 } -
uspace/lib/c/include/elf/elf_load.h
r054476d r73b3ecd 1 1 /* 2 * Copyright (c) 2016 Jiri Svoboda 2 * Copyright (c) 2006 Sergey Bondari 3 * Copyright (c) 2008 Jiri Svoboda 3 4 * All rights reserved. 4 5 * … … 31 32 */ 32 33 /** @file 33 * @brief 34 * @brief ELF loader structures and public functions. 34 35 */ 35 36 … … 37 38 #define ELF_LOAD_H_ 38 39 39 #include <elf/elf_mod.h> 40 #include <elf/elf.h> 41 #include <sys/types.h> 42 #include <loader/pcb.h> 40 43 41 /** Information on loaded ELF program */ 44 /** 45 * ELF error return codes 46 */ 47 #define EE_OK 0 /* No error */ 48 #define EE_INVALID 1 /* Invalid ELF image */ 49 #define EE_MEMORY 2 /* Cannot allocate address space */ 50 #define EE_INCOMPATIBLE 3 /* ELF image is not compatible with current architecture */ 51 #define EE_UNSUPPORTED 4 /* Non-supported ELF (e.g. dynamic ELFs) */ 52 #define EE_LOADER 5 /* The image is actually a program loader. */ 53 #define EE_IRRECOVERABLE 6 54 55 typedef enum { 56 /** Leave all segments in RW access mode. */ 57 ELDF_RW = 1 58 } eld_flags_t; 59 60 /** 61 * Some data extracted from the headers are stored here 62 */ 42 63 typedef struct { 43 elf_finfo_t finfo; 44 struct rtld *env; 64 /** Entry point */ 65 entry_point_t entry; 66 67 /** ELF interpreter name or NULL if statically-linked */ 68 const char *interp; 69 70 /** Pointer to the dynamic section */ 71 void *dynamic; 45 72 } elf_info_t; 46 73 47 extern int elf_load(const char *, elf_info_t *); 48 extern void elf_set_pcb(elf_info_t *, pcb_t *); 74 /** 75 * Holds information about an ELF binary being loaded. 76 */ 77 typedef struct { 78 /** Filedescriptor of the file from which we are loading */ 79 int fd; 80 81 /** Difference between run-time addresses and link-time addresses */ 82 uintptr_t bias; 83 84 /** Flags passed to the ELF loader. */ 85 eld_flags_t flags; 86 87 /** A copy of the ELF file header */ 88 elf_header_t *header; 89 90 /** Store extracted info here */ 91 elf_info_t *info; 92 } elf_ld_t; 93 94 extern const char *elf_error(unsigned int); 95 extern int elf_load_file(const char *, size_t, eld_flags_t, elf_info_t *); 96 extern void elf_create_pcb(elf_info_t *, pcb_t *); 49 97 50 98 #endif -
uspace/lib/c/include/loader/pcb.h
r054476d r73b3ecd 69 69 /** Pointer to ELF dynamic section of the program. */ 70 70 void *dynamic; 71 /** Pointer to dynamic linker state structure (r tld_t). */71 /** Pointer to dynamic linker state structure (runtime_env_t). */ 72 72 void *rtld_runtime; 73 73 } pcb_t; -
uspace/lib/c/include/rtld/module.h
r054476d r73b3ecd 39 39 #include <rtld/dynamic.h> 40 40 #include <adt/list.h> 41 #include <types/rtld/module.h>42 #include <types/rtld/rtld.h>43 41 44 extern void module_process_relocs(module_t *); 45 extern module_t *module_find(rtld_t *, const char *); 46 extern module_t *module_load(rtld_t *, const char *); 47 extern void module_load_deps(module_t *); 42 typedef struct module { 43 dyn_info_t dyn; 44 size_t bias; 48 45 49 extern void modules_process_relocs(rtld_t *, module_t *); 50 extern void modules_untag(rtld_t *); 46 /** Array of pointers to directly dependent modules */ 47 struct module **deps; 48 /** Number of fields in deps */ 49 size_t n_deps; 50 51 /** True iff relocations have already been processed in this module. */ 52 bool relocated; 53 54 /** Link to list of all modules in runtime environment */ 55 link_t modules_link; 56 57 /** Link to BFS queue. Only used when doing a BFS of the module graph */ 58 link_t queue_link; 59 /** Tag for modules already processed during a BFS */ 60 bool bfs_tag; 61 } module_t; 62 63 void module_process_relocs(module_t *m); 64 module_t *module_find(const char *name); 65 module_t *module_load(const char *name); 66 void module_load_deps(module_t *m); 67 68 void modules_process_relocs(module_t *start); 69 void modules_untag(void); 51 70 52 71 #endif -
uspace/lib/c/include/rtld/rtld.h
r054476d r73b3ecd 36 36 #define LIBC_RTLD_H_ 37 37 38 #include <sys/types.h> 38 39 #include <adt/list.h> 39 #include <elf/elf_mod.h>40 #include <sys/types.h>41 40 42 41 #include <rtld/dynamic.h> 43 #include < types/rtld/rtld.h>42 #include <rtld/module.h> 44 43 45 extern rtld_t *runtime_env; 44 typedef struct { 45 elf_dyn_t *rtld_dynamic; 46 module_t rtld; 47 48 module_t *program; 49 50 /** List of all loaded modules including rtld and the program */ 51 list_t modules; 52 53 /** Temporary hack to place each module at different address. */ 54 uintptr_t next_bias; 55 } runtime_env_t; 56 57 extern runtime_env_t *runtime_env; 46 58 47 59 extern void rtld_init_static(void); 48 extern int rtld_prog_process(elf_finfo_t *, rtld_t **);49 60 50 61 #endif -
uspace/lib/c/include/rtld/rtld_debug.h
r054476d r73b3ecd 36 36 #define LIBC_RTLD_RTLD_DEBUG_H_ 37 37 38 #include <stdio.h>39 40 38 /* Define to enable debugging mode. */ 41 39 #undef RTLD_DEBUG -
uspace/lib/c/include/rtld/symbol.h
r054476d r73b3ecd 39 39 #include <rtld/rtld.h> 40 40 41 /** Symbol search flags */ 42 typedef enum { 43 /** No flags */ 44 ssf_none = 0, 45 /** Do not search tree root */ 46 ssf_noroot = 0x1 47 } symbol_search_flags_t; 48 49 extern elf_symbol_t *symbol_bfs_find(const char *, module_t *, 50 symbol_search_flags_t, module_t **); 51 extern elf_symbol_t *symbol_def_find(const char *, module_t *, 52 symbol_search_flags_t, module_t **); 53 extern void *symbol_get_addr(elf_symbol_t *, module_t *); 41 elf_symbol_t *symbol_bfs_find(const char *name, module_t *start, module_t **mod); 42 elf_symbol_t *symbol_def_find(const char *name, module_t *origin, module_t **mod); 43 void *symbol_get_addr(elf_symbol_t *sym, module_t *m); 54 44 55 45 #endif -
uspace/lib/draw/Makefile
r054476d r73b3ecd 30 30 LIBRARY = libdraw 31 31 SLIBRARY = libdraw.so.0.0 32 LSONAME = libdraw.so .032 LSONAME = libdraw.so0 33 33 EXTRA_CFLAGS += -I$(LIBSOFTREND_PREFIX) -I$(LIBCOMPRESS_PREFIX) 34 34 -
uspace/lib/graph/Makefile
r054476d r73b3ecd 30 30 LIBRARY = libgraph 31 31 SLIBRARY = libgraph.so.0.0 32 LSONAME = libgraph.so .032 LSONAME = libgraph.so0 33 33 34 34 SOURCES = \ -
uspace/lib/gui/Makefile
r054476d r73b3ecd 30 30 LIBRARY = libgui 31 31 SLIBRARY = libgui.so.0.0 32 LSONAME = libgui.so .032 LSONAME = libgui.so0 33 33 EXTRA_CFLAGS += -I$(LIBDRAW_PREFIX) -I$(LIBSOFTREND_PREFIX) -I$(LIBGRAPH_PREFIX) 34 34 -
uspace/lib/http/Makefile
r054476d r73b3ecd 30 30 LIBRARY = libhttp 31 31 SLIBRARY = libhttp.so.0.0 32 LSONAME = libhttp.so .032 LSONAME = libhttp.so0 33 33 EXTRA_CFLAGS += -Iinclude 34 34 -
uspace/lib/math/Makefile
r054476d r73b3ecd 34 34 LIBRARY = libmath 35 35 SLIBRARY = libmath.so.0.0 36 LSONAME = libmath.so .036 LSONAME = libmath.so0 37 37 MATH = y 38 38 -
uspace/lib/posix/Makefile
r054476d r73b3ecd 31 31 LIBRARY = libposix 32 32 SLIBRARY = libposix.so.0.0 33 LSONAME = libposix.so .033 LSONAME = libposix.so0 34 34 35 35 EXTRA_CFLAGS = -Iinclude/ -
uspace/lib/softint/Makefile
r054476d r73b3ecd 32 32 LIBRARY = libsoftint 33 33 SLIBRARY = libsoftint.so.0.0 34 LSONAME = libsofti nt.so.034 LSONAME = libsofti.so0 35 35 36 36 SOURCES = \ -
uspace/lib/softrend/Makefile
r054476d r73b3ecd 30 30 LIBRARY = libsoftrend 31 31 SLIBRARY = libsoftrend.so.0.0 32 LSONAME = libsoftrend.so .032 LSONAME = libsoftrend.so0 33 33 MATH = y 34 34 -
uspace/lib/uri/Makefile
r054476d r73b3ecd 30 30 LIBRARY = liburi 31 31 SLIBRARY = liburi.so.0.0 32 LSONAME = liburi.so .032 LSONAME = liburi.so0 33 33 #EXTRA_CFLAGS += 34 34 -
uspace/srv/loader/main.c
r054476d r73b3ecd 63 63 #include <vfs/vfs.h> 64 64 65 #ifdef CONFIG_RTLD 66 #include <rtld/rtld.h> 67 #include <rtld/dynamic.h> 68 #include <rtld/module.h> 69 70 static int ldr_load_dyn_linked(elf_info_t *p_info); 71 #endif 72 65 73 #define DPRINTF(...) 66 74 … … 88 96 /** Used to limit number of connections to one. */ 89 97 static bool connected = false; 98 99 #ifdef CONFIG_RTLD 100 /** State structure of the dynamic linker. */ 101 runtime_env_t dload_re; 102 static module_t prog_mod; 103 #endif 90 104 91 105 static void ldr_get_taskid(ipc_callid_t rid, ipc_call_t *request) … … 254 268 int rc; 255 269 256 rc = elf_load (pathname, &prog_info);270 rc = elf_load_file(pathname, 0, 0, &prog_info); 257 271 if (rc != EE_OK) { 258 272 DPRINTF("Failed to load executable '%s'.\n", pathname); … … 261 275 } 262 276 263 elf_ set_pcb(&prog_info, &pcb);277 elf_create_pcb(&prog_info, &pcb); 264 278 265 279 pcb.cwd = cwd; … … 269 283 270 284 pcb.filc = filc; 271 printf("dynamic=%p rtld_env=%p\n", pcb.dynamic, pcb.rtld_runtime); 272 285 286 if (prog_info.interp == NULL) { 287 /* Statically linked program */ 288 async_answer_0(rid, EOK); 289 return 0; 290 } 291 292 DPRINTF("Binary is dynamically linked.\n"); 293 #ifdef CONFIG_RTLD 294 DPRINTF(" - pcb address: %p\n", &pcb); 295 DPRINTF( "- prog dynamic: %p\n", prog_info.dynamic); 296 297 rc = ldr_load_dyn_linked(&prog_info); 298 #else 299 rc = ENOTSUP; 300 #endif 273 301 async_answer_0(rid, rc); 274 302 return 0; 275 303 } 304 305 #ifdef CONFIG_RTLD 306 307 static int ldr_load_dyn_linked(elf_info_t *p_info) 308 { 309 runtime_env = &dload_re; 310 311 DPRINTF("Load dynamically linked program.\n"); 312 313 /* 314 * First we need to process dynamic sections of the executable 315 * program and insert it into the module graph. 316 */ 317 318 DPRINTF("Parse program .dynamic section at %p\n", p_info->dynamic); 319 dynamic_parse(p_info->dynamic, 0, &prog_mod.dyn); 320 prog_mod.bias = 0; 321 prog_mod.dyn.soname = "[program]"; 322 323 /* Initialize list of loaded modules */ 324 list_initialize(&runtime_env->modules); 325 list_append(&prog_mod.modules_link, &runtime_env->modules); 326 327 /* Pointer to program module. Used as root of the module graph. */ 328 runtime_env->program = &prog_mod; 329 330 /* Work around non-existent memory space allocation. */ 331 runtime_env->next_bias = 0x1000000; 332 333 /* 334 * Now we can continue with loading all other modules. 335 */ 336 337 DPRINTF("Load all program dependencies\n"); 338 module_load_deps(&prog_mod); 339 340 /* 341 * Now relocate/link all modules together. 342 */ 343 344 /* Process relocations in all modules */ 345 DPRINTF("Relocate all modules\n"); 346 modules_process_relocs(&prog_mod); 347 348 /* Pass runtime evironment pointer through PCB. */ 349 pcb.rtld_runtime = (void *) runtime_env; 350 351 return 0; 352 } 353 #endif 276 354 277 355 /** Run the previously loaded program. … … 296 374 async_answer_0(rid, EOK); 297 375 DPRINTF("Jump to entry point at %p\n", pcb.entry); 298 entry_point_jmp(prog_info. finfo.entry, &pcb);376 entry_point_jmp(prog_info.entry, &pcb); 299 377 300 378 /* Not reached */
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