diff options
Diffstat (limited to 'sysdeps/linux-gnu/ppc/plt.c')
| -rw-r--r-- | sysdeps/linux-gnu/ppc/plt.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/sysdeps/linux-gnu/ppc/plt.c b/sysdeps/linux-gnu/ppc/plt.c index 19991b5..c85ea92 100644 --- a/sysdeps/linux-gnu/ppc/plt.c +++ b/sysdeps/linux-gnu/ppc/plt.c @@ -1,8 +1,42 @@ #include <gelf.h> #include "ltrace.h" #include "elf.h" +#include "debug.h" +#include "ptrace.h" +#include "options.h" -GElf_Addr arch_plt_sym_val(struct ltelf *lte, size_t ndx, GElf_Rela * rela) +GElf_Addr +arch_plt_sym_val (struct ltelf *lte, size_t ndx, GElf_Rela *rela) { - return rela->r_offset; + return rela->r_offset; } + +void * plt2addr(struct process *proc, void ** plt) +{ + long addr; + + debug(3, 0); + + if (proc->e_machine == EM_PPC || plt == 0) + return (void *)plt; + + if (proc->pid == 0) + return (void *)0; + + // On a PowerPC-64 system, a plt is three 64-bit words: the first is the + // 64-bit address of the routine. Before the PLT has been initialized, this + // will be 0x0. In fact, the symbol table won't have the plt's address even. + // Ater the PLT has been initialized, but before it has been resolved, the + // first word will be the address of the function in the dynamic linker that + // will reslove the PLT. After the PLT is resolved, this will will be the + // address of the routine whose symbol is in the symbol table. + + addr = ptrace(PTRACE_PEEKTEXT, proc->pid, plt); + + if (opt_d >= 3) { + xinfdump(proc->pid, plt, sizeof(void*)*3); + } + + return (void *)addr; +} + |