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[GOLD] R_PPC64_ENTRY support

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elfcpp/
	* powerpc.h (R_PPC64_ENTRY): Define.
gold/
	* powerpc.cc (add_2_2_12, ld_2_12, lis_2): Define.
	(Target_powerpc::Scan::local, global): Handle R_PPC64_ENTRY.
	(Target_powerpc::Relocate::relocate): Edit code at R_PPC64_ENTRY.
This commit is contained in:
Alan Modra 2015-12-07 13:15:24 +10:30
parent 006589cfa1
commit 549dba7104
4 changed files with 58 additions and 0 deletions
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4
elfcpp/ChangeLog
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@ -1,3 +1,7 @@
2015-12-07 Alan Modra <amodra@gmail.com>
* powerpc.h (R_PPC64_ENTRY): Define.
2015-11-11 Alan Modra <amodra@gmail.com>
Peter Bergner <bergner@vnet.ibm.com>

1
elfcpp/powerpc.h
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@ -178,6 +178,7 @@ enum
R_PPC_EMB_RELSDA = 116,
R_PPC64_REL24_NOTOC = 116,
R_PPC64_ADDR64_LOCAL = 117,
R_PPC64_ENTRY = 118,
R_PPC_VLE_REL8 = 216,
R_PPC_VLE_REL15 = 217,

6
gold/ChangeLog
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@ -1,3 +1,9 @@
2015-12-07 Alan Modra <amodra@gmail.com>
* powerpc.cc (add_2_2_12, ld_2_12, lis_2): Define.
(Target_powerpc::Scan::local, global): Handle R_PPC64_ENTRY.
(Target_powerpc::Relocate::relocate): Edit code at R_PPC64_ENTRY.
2015-12-03 Vladimir Radosavljevic <Vladimir.Radosavljevic@imgtec.com>
* object.cc (Sized_relobj::do_for_all_local_got_entries): Use

47
gold/powerpc.cc
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@ -3224,6 +3224,7 @@ Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry(
static const uint32_t add_0_11_11 = 0x7c0b5a14;
static const uint32_t add_2_2_11 = 0x7c425a14;
static const uint32_t add_2_2_12 = 0x7c426214;
static const uint32_t add_3_3_2 = 0x7c631214;
static const uint32_t add_3_3_13 = 0x7c636a14;
static const uint32_t add_11_0_11 = 0x7d605a14;
@ -3258,6 +3259,7 @@ static const uint32_t ld_0_12 = 0xe80c0000;
static const uint32_t ld_2_1 = 0xe8410000;
static const uint32_t ld_2_2 = 0xe8420000;
static const uint32_t ld_2_11 = 0xe84b0000;
static const uint32_t ld_2_12 = 0xe84c0000;
static const uint32_t ld_11_2 = 0xe9620000;
static const uint32_t ld_11_11 = 0xe96b0000;
static const uint32_t ld_12_2 = 0xe9820000;
@ -3267,6 +3269,7 @@ static const uint32_t lfd_0_1 = 0xc8010000;
static const uint32_t li_0_0 = 0x38000000;
static const uint32_t li_12_0 = 0x39800000;
static const uint32_t lis_0 = 0x3c000000;
static const uint32_t lis_2 = 0x3c400000;
static const uint32_t lis_11 = 0x3d600000;
static const uint32_t lis_12 = 0x3d800000;
static const uint32_t lvx_0_12_0 = 0x7c0c00ce;
@ -5607,6 +5610,7 @@ Target_powerpc<size, big_endian>::Scan::local(
case elfcpp::R_POWERPC_GNU_VTENTRY:
case elfcpp::R_PPC64_TOCSAVE:
case elfcpp::R_POWERPC_TLS:
case elfcpp::R_PPC64_ENTRY:
break;
case elfcpp::R_PPC64_TOC:
@ -5982,6 +5986,7 @@ Target_powerpc<size, big_endian>::Scan::global(
case elfcpp::R_POWERPC_GNU_VTENTRY:
case elfcpp::R_PPC_LOCAL24PC:
case elfcpp::R_POWERPC_TLS:
case elfcpp::R_PPC64_ENTRY:
break;
case elfcpp::R_PPC64_TOC:
@ -7655,6 +7660,48 @@ Target_powerpc<size, big_endian>::Relocate::relocate(
}
}
break;
case elfcpp::R_PPC64_ENTRY:
value = (target->got_section()->output_section()->address()
+ object->toc_base_offset());
if (value + 0x80008000 <= 0xffffffff
&& !parameters->options().output_is_position_independent())
{
Insn* iview = reinterpret_cast<Insn*>(view);
Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview);
Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1);
if ((insn1 & ~0xfffc) == ld_2_12
&& insn2 == add_2_2_12)
{
insn1 = lis_2 + ha(value);
elfcpp::Swap<32, big_endian>::writeval(iview, insn1);
insn2 = addi_2_2 + l(value);
elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2);
return true;
}
}
else
{
value -= address;
if (value + 0x80008000 <= 0xffffffff)
{
Insn* iview = reinterpret_cast<Insn*>(view);
Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview);
Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1);
if ((insn1 & ~0xfffc) == ld_2_12
&& insn2 == add_2_2_12)
{
insn1 = addis_2_12 + ha(value);
elfcpp::Swap<32, big_endian>::writeval(iview, insn1);
insn2 = addi_2_2 + l(value);
elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2);
return true;
}
}
}
break;
}
}