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92 lines
3.2 KiB
92 lines
3.2 KiB
4 years ago
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diff --git a/sysdeps/linux-gnu/ppc/plt.c b/sysdeps/linux-gnu/ppc/plt.c
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index 45ed7fb..5f81889 100644
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--- a/sysdeps/linux-gnu/ppc/plt.c
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+++ b/sysdeps/linux-gnu/ppc/plt.c
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@@ -274,14 +274,15 @@ arch_plt_sym_val(struct ltelf *lte, size_t ndx, GElf_Rela *rela)
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assert(rela->r_addend != 0);
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/* XXX double cast */
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- arch_addr_t res_addr = (arch_addr_t) (uintptr_t) rela->r_addend;
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+ arch_addr_t res_addr
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+ = (arch_addr_t) (uintptr_t) (rela->r_addend + lte->bias);
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if (arch_translate_address(lte, res_addr, &res_addr) < 0) {
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fprintf(stderr, "Couldn't OPD-translate IRELATIVE "
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"resolver address.\n");
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return 0;
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}
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/* XXX double cast */
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- return (GElf_Addr) (uintptr_t) res_addr;
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+ return (GElf_Addr) (uintptr_t) (res_addr - lte->bias);
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} else {
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/* We put brakpoints to PLT entries the same as the
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@@ -453,7 +454,7 @@ arch_elf_init(struct ltelf *lte, struct library *lib)
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#ifndef EF_PPC64_ABI
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assert (! (lte->ehdr.e_flags & 3 ) == 2)
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#else
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- lte->arch.elfv2_abi=((lte->ehdr.e_flags & EF_PPC64_ABI) == 2) ;
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+ lte->arch.elfv2_abi = ((lte->ehdr.e_flags & EF_PPC64_ABI) == 2);
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#endif
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if (lte->ehdr.e_machine == EM_PPC64
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@@ -827,15 +828,15 @@ arch_elf_add_plt_entry(struct process *proc, struct ltelf *lte,
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assert(plt_slot_addr >= lte->plt_addr
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|| plt_slot_addr < lte->plt_addr + lte->plt_size);
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+ plt_entry_addr += lte->bias;
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+ plt_slot_addr += lte->bias;
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+
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/* Should avoid to do read if dynamic linker hasn't run yet
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* or allow -1 a valid return code. */
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GElf_Addr plt_slot_value;
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- if (read_plt_slot_value(proc, plt_slot_addr, &plt_slot_value) < 0) {
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- if (!lte->arch.elfv2_abi)
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- goto fail;
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- else
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- return PPC_PLT_UNRESOLVED;
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- }
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+ int rc = read_plt_slot_value(proc, plt_slot_addr, &plt_slot_value);
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+ if (rc < 0 && !lte->arch.elfv2_abi)
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+ goto fail;
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struct library_symbol *libsym = malloc(sizeof(*libsym));
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if (libsym == NULL) {
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@@ -854,8 +855,9 @@ arch_elf_add_plt_entry(struct process *proc, struct ltelf *lte,
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goto fail2;
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libsym->arch.plt_slot_addr = plt_slot_addr;
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- if (! is_irelative
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- && (plt_slot_value == plt_entry_addr || plt_slot_value == 0)) {
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+ if (rc < 0 || (! is_irelative
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+ && (plt_slot_value == plt_entry_addr
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+ || plt_slot_value == 0))) {
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libsym->arch.type = PPC_PLT_UNRESOLVED;
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libsym->arch.resolved_value = plt_entry_addr;
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} else {
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@@ -1166,8 +1168,8 @@ ppc_plt_bp_install(struct breakpoint *bp, struct process *proc)
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libsym->arch.resolved_value = plt_entry_addr;
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}
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} else {
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- fprintf(stderr, "Couldn't unresolve %s@%p. Not tracing"
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- " this symbol.\n",
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+ fprintf(stderr, "Couldn't unresolve %s@%p. Will not"
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+ " trace this symbol.\n",
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breakpoint_name(bp), bp->addr);
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proc_remove_breakpoint(proc, bp);
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}
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@@ -1222,6 +1224,14 @@ arch_library_symbol_clone(struct library_symbol *retp,
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struct library_symbol *libsym)
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{
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retp->arch = libsym->arch;
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+ if (libsym->arch.type == PPC_PLT_NEED_UNRESOLVE) {
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+ assert(libsym->arch.data->self == libsym->arch.data);
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+ retp->arch.data = malloc(sizeof *retp->arch.data);
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+ if (retp->arch.data == NULL)
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+ return -1;
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+ *retp->arch.data = *libsym->arch.data;
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+ retp->arch.data->self = retp->arch.data;
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+ }
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return 0;
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}
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