[valgrind] [Bug 452802] Handle lld 9+ split RW PT_LOAD segments correctly

[Paul Floyd]

https://bugs.kde.org/show_bug.cgi?id=452802

--- Comment #3 from Paul Floyd <pjfl...@wanadoo.fr> ---
What I'm going to try is, in elf.c


for (i = 0; i < e->e.e_phnum; i++) {
      ESZ(Phdr) *ph = &e->p[i];
      ESZ(Phdr) *phprev = NULL;
      ESZ(Addr) addr, bss, brkaddr;
      ESZ(Off) off;
      ESZ(Word) filesz;
      ESZ(Word) memsz;
      unsigned prot = 0;

      if (ph->p_type != PT_LOAD)
         continue;

       if (i)
            phprev = &e->p[i-1];

      if (ph->p_flags & PF_X) prot |= VKI_PROT_EXEC;
      if (ph->p_flags & PF_W) prot |= VKI_PROT_WRITE;
      if (ph->p_flags & PF_R) prot |= VKI_PROT_READ;

      addr    = ph->p_vaddr+base;
      off     = ph->p_offset;
      if (phprev && ph->p_flags == phprev->p_flags)
           off += phprev->p_offset;

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