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Add ppc64le ELFv2 abi support to backends and elflint.

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The big endian vs little endian changes are already handled by detecting
the EI_DATA data encoding. And the function descriptors are already not
used when we see there is no .opd section. This change adds new checks
for st_other bits, new relocations and recognizes DT_PPC64_OPT.

Signed-off-by: Menanteau Guy <menantea@linux.vnet.ibm.com>
Signed-off-by: Mark Wielaard <mjw@redhat.com>
This commit is contained in:
Mark Wielaard
2014-07-04 14:30:48 +02:00
parent 16e2d351bf
commit a95c4ad24c
6 changed files with 45 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
backends/ChangeLog
+11
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@@ -1,3 +1,14 @@
2014-07-04 Menanteau Guy <menantea@linux.vnet.ibm.com>
Mark Wielaard <mjw@redhat.com>
* ppc64_init.c (ppc64_init): Hook check_st_other_bits.
* ppc64_reloc.def: TLSGD, TLSLD, TOCSAVE, ADDR16_HIGH, ADDR16_HIGHA,
TPREL16_HIGH, TPREL16_HIGHA, DTPREL16_HIGH, DTPREL16_HIGHA, JMP_IREL,
IRELATIVE, REL16, REL16_LO, REL16_HI and REL16_HA.
* ppc64_symbol.c (ppc64_dynamic_tag_name): Recognize DT_PPC64_OPT.
(ppc64_dynamic_tag_check): Likewise.
(ppc64_check_st_other_bits): New function.
2014-07-04 Mark Wielaard <mjw@redhat.com>
* aarch64_retval.c (aarch64_return_value_location): Handle
backends/ppc64_init.c
+1
View File
@@ -61,6 +61,7 @@ ppc64_init (elf, machine, eh, ehlen)
HOOK (eh, machine_flag_check);
HOOK (eh, copy_reloc_p);
HOOK (eh, check_special_symbol);
HOOK (eh, check_st_other_bits);
HOOK (eh, bss_plt_p);
HOOK (eh, return_value_location);
HOOK (eh, register_info);
backends/ppc64_reloc.def
+15
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@@ -132,6 +132,21 @@ RELOC_TYPE (DTPREL16_HIGHER, REL)
RELOC_TYPE (DTPREL16_HIGHERA, REL)
RELOC_TYPE (DTPREL16_HIGHEST, REL)
RELOC_TYPE (DTPREL16_HIGHESTA, REL)
RELOC_TYPE (TLSGD, REL)
RELOC_TYPE (TLSLD, REL)
RELOC_TYPE (TOCSAVE, REL)
RELOC_TYPE (ADDR16_HIGH, REL)
RELOC_TYPE (ADDR16_HIGHA, REL)
RELOC_TYPE (TPREL16_HIGH, REL)
RELOC_TYPE (TPREL16_HIGHA, REL)
RELOC_TYPE (DTPREL16_HIGH, REL)
RELOC_TYPE (DTPREL16_HIGHA, REL)
RELOC_TYPE (JMP_IREL, REL)
RELOC_TYPE (IRELATIVE, REL)
RELOC_TYPE (REL16, REL)
RELOC_TYPE (REL16_LO, REL)
RELOC_TYPE (REL16_HI, REL)
RELOC_TYPE (REL16_HA, REL)
/* Notes from Alan Modra:
backends/ppc64_symbol.c
+10 -1
View File
@@ -72,6 +72,8 @@ ppc64_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
return "PPC64_OPD";
case DT_PPC64_OPDSZ:
return "PPC64_OPDSZ";
case DT_PPC64_OPT:
return "PPC64_OPT";
default:
break;
}
@@ -84,7 +86,8 @@ ppc64_dynamic_tag_check (int64_t tag)
{
return (tag == DT_PPC64_GLINK
|| tag == DT_PPC64_OPD
|| tag == DT_PPC64_OPDSZ);
|| tag == DT_PPC64_OPDSZ
|| tag == DT_PPC64_OPT);
}
@@ -120,3 +123,9 @@ ppc64_machine_flag_check (GElf_Word flags)
{
return flags == 0 || flags == 1 || flags == 2;
}
bool
ppc64_check_st_other_bits (unsigned char st_other)
{
return (PPC64_LOCAL_ENTRY_OFFSET (st_other) != 0);
}
src/ChangeLog
+6
View File
@@ -1,3 +1,9 @@
2014-07-04 Menanteau Guy <menantea@linux.vnet.ibm.com>
Mark Wielaard <mjw@redhat.com>
* elflint (check_symtab): Add ".TOC." to the list of possibly
dangling symbols because of sourceware PR13621.
2014-06-14 Mark Wielaard <mjw@redhat.com>
* elflint (check_symtab): Use ebl_func_addr_mask on st_value.
src/elflint.c
+2 -1
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@@ -799,7 +799,8 @@ section [%2d] '%s': symbol %zu: function in COMMON section is nonsense\n"),
&& strcmp (name, "__fini_array_end") != 0
&& strcmp (name, "__bss_start") != 0
&& strcmp (name, "__bss_start__") != 0
&& strcmp (name, "__TMC_END__") != 0))
&& strcmp (name, "__TMC_END__") != 0
&& strcmp (name, ".TOC.") != 0))
ERROR (gettext ("\
section [%2d] '%s': symbol %zu: st_value out of bounds\n"),
idx, section_name (ebl, idx), cnt);