search for: dt_rel

Hi, Now lld writes relocations to the ".rela" sections only. Mips requires to use the "rel" format. So we need to be able to select format and names of relocation section, names of symbols like __rela_iplt_* / __rel_iplt_*, dynamic table tag DT_RELA / DT_REL. My current idea: - Add two virtual functions DefaultLayout::createDynamicRelocationTable() and DefaultLayout::getPLTRelocationTable(). Call these functions when we need to create relocation tables. By default these function create .rela.* sections. - Override createDynamicRelocationTabl...

...> > Hi, > > Now lld writes relocations to the ".rela" sections only. Mips requires > to use the "rel" format. So we need to be able to select format and > names of relocation section, names of symbols like __rela_iplt_* / > __rel_iplt_*, dynamic table tag DT_RELA / DT_REL. > > My current idea: > - Add two virtual functions > DefaultLayout::createDynamicRelocationTable() and > DefaultLayout::getPLTRelocationTable(). Call these functions when we > need to create relocation tables. By default these function create > .rela.* sections. &gt...

Create a configurable hole in the linear address space at the top of memory. A more advanced interface is needed to negotiate how much space the hypervisor is allowed to steal, but in the end, it seems most likely that a fixed constant size will be chosen for the compiled kernel, potentially propagated to an information page used by paravirtual initialization to determine interface compatibility.

Create a configurable hole in the linear address space at the top of memory. A more advanced interface is needed to negotiate how much space the hypervisor is allowed to steal, but in the end, it seems most likely that a fixed constant size will be chosen for the compiled kernel, potentially propagated to an information page used by paravirtual initialization to determine interface compatibility.

..._name, ".dynamic") =3D=3D 0) { + Elf32_Dyn *dyn =3D (void *)hdr + sechdrs[i].sh_offset; + int tag; + while ((tag =3D (++dyn)->d_tag) !=3D DT_NULL) { + if (tag =3D=3D DT_PLTGOT || tag =3D=3D DT_HASH || + tag =3D=3D DT_STRTAB || tag =3D=3D DT_SYMTAB || + tag =3D=3D DT_RELA || tag =3D=3D DT_INIT || + tag =3D=3D DT_FINI || tag =3D=3D DT_REL || + tag =3D=3D DT_JMPREL || tag =3D=3D DT_VERSYM || + tag =3D=3D DT_VERDEF || tag =3D=3D DT_VERNEED) + dyn->d_un.d_val +=3D VSYSCALL_RELOCATION; + } + } else if (strcmp(secstrings+sechdrs[i].sh_name,...

..._name, ".dynamic") =3D=3D 0) { + Elf32_Dyn *dyn =3D (void *)hdr + sechdrs[i].sh_offset; + int tag; + while ((tag =3D (++dyn)->d_tag) !=3D DT_NULL) { + if (tag =3D=3D DT_PLTGOT || tag =3D=3D DT_HASH || + tag =3D=3D DT_STRTAB || tag =3D=3D DT_SYMTAB || + tag =3D=3D DT_RELA || tag =3D=3D DT_INIT || + tag =3D=3D DT_FINI || tag =3D=3D DT_REL || + tag =3D=3D DT_JMPREL || tag =3D=3D DT_VERSYM || + tag =3D=3D DT_VERDEF || tag =3D=3D DT_VERNEED) + dyn->d_un.d_val +=3D VSYSCALL_RELOCATION; + } + } else if (strcmp(secstrings+sechdrs[i].sh_name,...

...trings+sechdrs[i].sh_name, ".dynamic") =3D=3D 0) { + Elf32_Dyn *dyn =3D (void *)hdr + sechdrs[i].sh_offset; + int tag; + while ((tag =3D (++dyn)->d_tag) !=3D DT_NULL) + switch(tag) { + case DT_PLTGOT: + case DT_HASH: + case DT_STRTAB: + case DT_SYMTAB: + case DT_RELA: + case DT_INIT: + case DT_FINI: + case DT_REL: + case DT_JMPREL: + case DT_VERSYM: + case DT_VERDEF: + case DT_VERNEED: + dyn->d_un.d_val +=3D VDSO_HIGH_BASE; + } + } else if (strcmp(secstrings+sechdrs[i].sh_name, ".useless") =3D=3D 0) { + /* This is dem...

...trings+sechdrs[i].sh_name, ".dynamic") =3D=3D 0) { + Elf32_Dyn *dyn =3D (void *)hdr + sechdrs[i].sh_offset; + int tag; + while ((tag =3D (++dyn)->d_tag) !=3D DT_NULL) + switch(tag) { + case DT_PLTGOT: + case DT_HASH: + case DT_STRTAB: + case DT_SYMTAB: + case DT_RELA: + case DT_INIT: + case DT_FINI: + case DT_REL: + case DT_JMPREL: + case DT_VERSYM: + case DT_VERDEF: + case DT_VERNEED: + dyn->d_un.d_val +=3D VDSO_HIGH_BASE; + } + } else if (strcmp(secstrings+sechdrs[i].sh_name, ".useless") =3D=3D 0) { + /* This is dem...

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --