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ppc64-linux: compute the correct initial program counter and tocptr

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when the interpreter is loaded at a different address than what it
asked for.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5576
This commit is contained in:
Julian Seward 2006-01-20 21:45:36 +00:00
parent 3db74cde05
commit 0297c5e469
1 changed files with 8 additions and 0 deletions
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8
coregrind/m_ume.c
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@ -329,6 +329,11 @@ static Int load_ELF(Int fd, const HChar* name, /*MOD*/ExeInfo* info)
void *entry;
ESZ(Addr) ebase = 0;
/* The difference between where the interpreter got mapped and
where it asked to be mapped. Needed for computing the ppc64 ELF
entry point and initial tocptr (R2) value. */
ESZ(Word) interp_offset = 0;
#ifdef HAVE_PIE
ebase = info->exe_base;
#endif
@ -484,6 +489,7 @@ static Int load_ELF(Int fd, const HChar* name, /*MOD*/ExeInfo* info)
entry = (void *)(advised - interp_addr + interp->e.e_entry);
info->interp_base = (ESZ(Addr))advised;
interp_offset = advised - interp_addr;
VG_(free)(interp->p);
VG_(free)(interp);
@ -500,6 +506,8 @@ static Int load_ELF(Int fd, const HChar* name, /*MOD*/ExeInfo* info)
is the static chain value. */
info->init_ip = ((ULong*)entry)[0];
info->init_toc = ((ULong*)entry)[1];
info->init_ip += interp_offset;
info->init_toc += interp_offset;
#else
info->init_ip = (Addr)entry;
info->init_toc = 0; /* meaningless on this platform */