#include "../../include/linux/license.h"
#include "../../include/linux/module_symbol.h"
+static bool module_enabled;
/* Are we using CONFIG_MODVERSIONS? */
static bool modversions;
/* Is CONFIG_MODULE_SRCVERSION_ALL set? */
".fmt_slot*", /* EZchip */
".gnu.lto*",
".discard.*",
+ ".llvm.call-graph-profile", /* call graph */
NULL
};
*/
s->is_func = (ELF_ST_TYPE(sym->st_info) == STT_FUNC);
+ /*
+ * For parisc64, symbols prefixed $$ from the library have the symbol type
+ * STT_LOPROC. They should be handled as functions too.
+ */
+ if (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64 &&
+ elf->hdr->e_machine == EM_PARISC &&
+ ELF_ST_TYPE(sym->st_info) == STT_LOPROC)
+ s->is_func = true;
+
if (match(secname, PATTERNS(INIT_SECTIONS)))
warn("%s: %s: EXPORT_SYMBOL used for init symbol. Remove __init or EXPORT_SYMBOL.\n",
mod->name, name);
const char *tosec = sec_name(elf, get_secindex(elf, sym));
const struct sectioncheck *mismatch;
- if (elf->export_symbol_secndx == fsecndx) {
+ if (module_enabled && elf->export_symbol_secndx == fsecndx) {
check_export_symbol(mod, elf, faddr, tosec, sym);
return;
}
tosec, taddr);
}
-static int addend_386_rel(uint32_t *location, Elf_Rela *r)
+static Elf_Addr addend_386_rel(uint32_t *location, unsigned int r_type)
{
- unsigned int r_typ = ELF_R_TYPE(r->r_info);
-
- switch (r_typ) {
+ switch (r_type) {
case R_386_32:
- r->r_addend = TO_NATIVE(*location);
- break;
+ return TO_NATIVE(*location);
case R_386_PC32:
- r->r_addend = TO_NATIVE(*location) + 4;
- break;
- default:
- r->r_addend = (Elf_Addr)(-1);
+ return TO_NATIVE(*location) + 4;
}
- return 0;
+
+ return (Elf_Addr)(-1);
}
#ifndef R_ARM_CALL
return (int32_t)(value << shift) >> shift;
}
-static int addend_arm_rel(void *loc, Elf_Sym *sym, Elf_Rela *r)
+static Elf_Addr addend_arm_rel(void *loc, Elf_Sym *sym, unsigned int r_type)
{
- unsigned int r_typ = ELF_R_TYPE(r->r_info);
uint32_t inst, upper, lower, sign, j1, j2;
int32_t offset;
- switch (r_typ) {
+ switch (r_type) {
case R_ARM_ABS32:
case R_ARM_REL32:
inst = TO_NATIVE(*(uint32_t *)loc);
- r->r_addend = inst + sym->st_value;
- break;
+ return inst + sym->st_value;
case R_ARM_MOVW_ABS_NC:
case R_ARM_MOVT_ABS:
inst = TO_NATIVE(*(uint32_t *)loc);
offset = sign_extend32(((inst & 0xf0000) >> 4) | (inst & 0xfff),
15);
- r->r_addend = offset + sym->st_value;
- break;
+ return offset + sym->st_value;
case R_ARM_PC24:
case R_ARM_CALL:
case R_ARM_JUMP24:
inst = TO_NATIVE(*(uint32_t *)loc);
offset = sign_extend32((inst & 0x00ffffff) << 2, 25);
- r->r_addend = offset + sym->st_value + 8;
- break;
+ return offset + sym->st_value + 8;
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
upper = TO_NATIVE(*(uint16_t *)loc);
((lower & 0x7000) >> 4) |
(lower & 0x00ff),
15);
- r->r_addend = offset + sym->st_value;
- break;
+ return offset + sym->st_value;
case R_ARM_THM_JUMP19:
/*
* Encoding T3:
((upper & 0x03f) << 12) |
((lower & 0x07ff) << 1),
20);
- r->r_addend = offset + sym->st_value + 4;
- break;
+ return offset + sym->st_value + 4;
case R_ARM_THM_CALL:
case R_ARM_THM_JUMP24:
/*
((upper & 0x03ff) << 12) |
((lower & 0x07ff) << 1),
24);
- r->r_addend = offset + sym->st_value + 4;
- break;
- default:
- r->r_addend = (Elf_Addr)(-1);
+ return offset + sym->st_value + 4;
}
- return 0;
+
+ return (Elf_Addr)(-1);
}
-static int addend_mips_rel(uint32_t *location, Elf_Rela *r)
+static Elf_Addr addend_mips_rel(uint32_t *location, unsigned int r_type)
{
- unsigned int r_typ = ELF_R_TYPE(r->r_info);
uint32_t inst;
inst = TO_NATIVE(*location);
- switch (r_typ) {
+ switch (r_type) {
case R_MIPS_LO16:
- r->r_addend = inst & 0xffff;
- break;
+ return inst & 0xffff;
case R_MIPS_26:
- r->r_addend = (inst & 0x03ffffff) << 2;
- break;
+ return (inst & 0x03ffffff) << 2;
case R_MIPS_32:
- r->r_addend = inst;
- break;
- default:
- r->r_addend = (Elf_Addr)(-1);
+ return inst;
}
- return 0;
+ return (Elf_Addr)(-1);
}
#ifndef EM_RISCV
#define R_LARCH_SUB32 55
#endif
+static void get_rel_type_and_sym(struct elf_info *elf, uint64_t r_info,
+ unsigned int *r_type, unsigned int *r_sym)
+{
+ typedef struct {
+ Elf64_Word r_sym; /* Symbol index */
+ unsigned char r_ssym; /* Special symbol for 2nd relocation */
+ unsigned char r_type3; /* 3rd relocation type */
+ unsigned char r_type2; /* 2nd relocation type */
+ unsigned char r_type; /* 1st relocation type */
+ } Elf64_Mips_R_Info;
+
+ bool is_64bit = (elf->hdr->e_ident[EI_CLASS] == ELFCLASS64);
+
+ if (elf->hdr->e_machine == EM_MIPS && is_64bit) {
+ Elf64_Mips_R_Info *mips64_r_info = (void *)&r_info;
+
+ *r_type = mips64_r_info->r_type;
+ *r_sym = TO_NATIVE(mips64_r_info->r_sym);
+ return;
+ }
+
+ if (is_64bit) {
+ Elf64_Xword r_info64 = r_info;
+
+ r_info = TO_NATIVE(r_info64);
+ } else {
+ Elf32_Word r_info32 = r_info;
+
+ r_info = TO_NATIVE(r_info32);
+ }
+
+ *r_type = ELF_R_TYPE(r_info);
+ *r_sym = ELF_R_SYM(r_info);
+}
+
static void section_rela(struct module *mod, struct elf_info *elf,
Elf_Shdr *sechdr)
{
Elf_Rela *rela;
- Elf_Rela r;
- unsigned int r_sym;
unsigned int fsecndx = sechdr->sh_info;
const char *fromsec = sec_name(elf, fsecndx);
Elf_Rela *start = (void *)elf->hdr + sechdr->sh_offset;
return;
for (rela = start; rela < stop; rela++) {
- r.r_offset = TO_NATIVE(rela->r_offset);
-#if KERNEL_ELFCLASS == ELFCLASS64
- if (elf->hdr->e_machine == EM_MIPS) {
- unsigned int r_typ;
- r_sym = ELF64_MIPS_R_SYM(rela->r_info);
- r_sym = TO_NATIVE(r_sym);
- r_typ = ELF64_MIPS_R_TYPE(rela->r_info);
- r.r_info = ELF64_R_INFO(r_sym, r_typ);
- } else {
- r.r_info = TO_NATIVE(rela->r_info);
- r_sym = ELF_R_SYM(r.r_info);
- }
-#else
- r.r_info = TO_NATIVE(rela->r_info);
- r_sym = ELF_R_SYM(r.r_info);
-#endif
- r.r_addend = TO_NATIVE(rela->r_addend);
+ Elf_Addr taddr, r_offset;
+ unsigned int r_type, r_sym;
+
+ r_offset = TO_NATIVE(rela->r_offset);
+ get_rel_type_and_sym(elf, rela->r_info, &r_type, &r_sym);
+
+ taddr = TO_NATIVE(rela->r_addend);
+
switch (elf->hdr->e_machine) {
case EM_RISCV:
if (!strcmp("__ex_table", fromsec) &&
- ELF_R_TYPE(r.r_info) == R_RISCV_SUB32)
+ r_type == R_RISCV_SUB32)
continue;
break;
case EM_LOONGARCH:
if (!strcmp("__ex_table", fromsec) &&
- ELF_R_TYPE(r.r_info) == R_LARCH_SUB32)
+ r_type == R_LARCH_SUB32)
continue;
break;
}
check_section_mismatch(mod, elf, elf->symtab_start + r_sym,
- fsecndx, fromsec, r.r_offset, r.r_addend);
+ fsecndx, fromsec, r_offset, taddr);
}
}
Elf_Shdr *sechdr)
{
Elf_Rel *rel;
- Elf_Rela r;
- unsigned int r_sym;
unsigned int fsecndx = sechdr->sh_info;
const char *fromsec = sec_name(elf, fsecndx);
Elf_Rel *start = (void *)elf->hdr + sechdr->sh_offset;
for (rel = start; rel < stop; rel++) {
Elf_Sym *tsym;
+ Elf_Addr taddr = 0, r_offset;
+ unsigned int r_type, r_sym;
void *loc;
- r.r_offset = TO_NATIVE(rel->r_offset);
-#if KERNEL_ELFCLASS == ELFCLASS64
- if (elf->hdr->e_machine == EM_MIPS) {
- unsigned int r_typ;
- r_sym = ELF64_MIPS_R_SYM(rel->r_info);
- r_sym = TO_NATIVE(r_sym);
- r_typ = ELF64_MIPS_R_TYPE(rel->r_info);
- r.r_info = ELF64_R_INFO(r_sym, r_typ);
- } else {
- r.r_info = TO_NATIVE(rel->r_info);
- r_sym = ELF_R_SYM(r.r_info);
- }
-#else
- r.r_info = TO_NATIVE(rel->r_info);
- r_sym = ELF_R_SYM(r.r_info);
-#endif
- r.r_addend = 0;
+ r_offset = TO_NATIVE(rel->r_offset);
+ get_rel_type_and_sym(elf, rel->r_info, &r_type, &r_sym);
- loc = sym_get_data_by_offset(elf, fsecndx, r.r_offset);
+ loc = sym_get_data_by_offset(elf, fsecndx, r_offset);
tsym = elf->symtab_start + r_sym;
switch (elf->hdr->e_machine) {
case EM_386:
- addend_386_rel(loc, &r);
+ taddr = addend_386_rel(loc, r_type);
break;
case EM_ARM:
- addend_arm_rel(loc, tsym, &r);
+ taddr = addend_arm_rel(loc, tsym, r_type);
break;
case EM_MIPS:
- addend_mips_rel(loc, &r);
+ taddr = addend_mips_rel(loc, r_type);
break;
default:
fatal("Please add code to calculate addend for this architecture\n");
}
check_section_mismatch(mod, elf, tsym,
- fsecndx, fromsec, r.r_offset, r.r_addend);
+ fsecndx, fromsec, r_offset, taddr);
}
}
LIST_HEAD(dump_lists);
struct dump_list *dl, *dl2;
- while ((opt = getopt(argc, argv, "ei:mnT:to:au:WwENd:")) != -1) {
+ while ((opt = getopt(argc, argv, "ei:MmnT:to:au:WwENd:")) != -1) {
switch (opt) {
case 'e':
external_module = true;
dl->file = optarg;
list_add_tail(&dl->list, &dump_lists);
break;
+ case 'M':
+ module_enabled = true;
+ break;
case 'm':
modversions = true;
break;
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