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[X86,lld] Handle relocation R_X86_64_REX2_GOTPCRELX (#109783)

Browse Source 
For

	mov        name@GOTPCREL(%rip), %reg
	test       %reg, name@GOTPCREL(%rip)
	binop      name@GOTPCREL(%rip), %reg

where binop is one of adc, add, and, cmp, or, sbb, sub, xor
instructions, we added

 R_X86_64_REX2_GOTPCRELX = 43

in #106681.

Linker can treat R_X86_64_REX2_GOTPCRELX as R_X86_64_GOTPCREL or convert
the above instructions to

	lea	name(%rip), %reg
	mov	$name, %reg
	test	$name, %reg
	binop	$name, %reg

if the first byte of the instruction at the relocation `offset - 4` is
`0xd5` (namely, encoded w/ REX2 prefix) when possible.

Binutils patch:
3d5a60de52
Binutils mailthread:
https://sourceware.org/pipermail/binutils/2023-December/131462.html
ABI discussion: https://groups.google.com/g/x86-64-abi/c/KbzaNHRB6QU
Blog: https://kanrobert.github.io/rfc/All-about-APX-relocation
This commit is contained in:
Shengchen Kan
2024-09-29 12:52:36 +08:00
committed by GitHub
parent c3e4998c0b
commit 31dd29cfb3
4 changed files with 145 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
lld/ELF/Arch/X86_64.cpp
View File

@@ -388,6 +388,7 @@ RelExpr X86_64::getRelExpr(RelType type, const Symbol &s,
case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX:
case R_X86_64_REX2_GOTPCRELX:
case R_X86_64_GOTTPOFF:
return R_GOT_PC;
case R_X86_64_GOTOFF64:
@@ -725,6 +726,7 @@ int64_t X86_64::getImplicitAddend(const uint8_t *buf, RelType type) const {
case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX:
case R_X86_64_REX2_GOTPCRELX:
case R_X86_64_PC32:
case R_X86_64_GOTTPOFF:
case R_X86_64_PLT32:
@@ -808,6 +810,7 @@ void X86_64::relocate(uint8_t *loc, const Relocation &rel, uint64_t val) const {
break;
case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX:
case R_X86_64_REX2_GOTPCRELX:
if (rel.expr != R_GOT_PC) {
relaxGot(loc, rel, val);
} else {
@@ -859,12 +862,13 @@ void X86_64::relocate(uint8_t *loc, const Relocation &rel, uint64_t val) const {
RelExpr X86_64::adjustGotPcExpr(RelType type, int64_t addend,
const uint8_t *loc) const {
// Only R_X86_64_[REX_]GOTPCRELX can be relaxed. GNU as may emit GOTPCRELX
// with addend != -4. Such an instruction does not load the full GOT entry, so
// we cannot relax the relocation. E.g. movl x@GOTPCREL+4(%rip), %rax
// (addend=0) loads the high 32 bits of the GOT entry.
// Only R_X86_64_[REX_]|[REX2_]GOTPCRELX can be relaxed. GNU as may emit
// GOTPCRELX with addend != -4. Such an instruction does not load the full GOT
// entry, so we cannot relax the relocation. E.g. movl x@GOTPCREL+4(%rip),
// %rax (addend=0) loads the high 32 bits of the GOT entry.
if (!ctx.arg.relax || addend != -4 ||
(type != R_X86_64_GOTPCRELX && type != R_X86_64_REX_GOTPCRELX))
(type != R_X86_64_GOTPCRELX && type != R_X86_64_REX_GOTPCRELX &&
type != R_X86_64_REX2_GOTPCRELX))
return R_GOT_PC;
const uint8_t op = loc[-2];
const uint8_t modRm = loc[-1];
@@ -880,7 +884,7 @@ RelExpr X86_64::adjustGotPcExpr(RelType type, int64_t addend,
if (op == 0xff && (modRm == 0x15 || modRm == 0x25))
return R_RELAX_GOT_PC;
// We don't support test/binop instructions without a REX prefix.
// We don't support test/binop instructions without a REX/REX2 prefix.
if (type == R_X86_64_GOTPCRELX)
return R_GOT_PC;
@@ -894,8 +898,8 @@ RelExpr X86_64::adjustGotPcExpr(RelType type, int64_t addend,
// "Intel 64 and IA-32 Architectures Software Developer's Manual V2"
// (http://www.intel.com/content/dam/www/public/us/en/documents/manuals/
// 64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf)
static void relaxGotNoPic(uint8_t *loc, uint64_t val, uint8_t op,
uint8_t modRm) {
static void relaxGotNoPic(uint8_t *loc, uint64_t val, uint8_t op, uint8_t modRm,
bool isRex2) {
const uint8_t rex = loc[-3];
// Convert "test %reg, foo@GOTPCREL(%rip)" to "test $foo, %reg".
if (op == 0x85) {
@@ -921,7 +925,7 @@ static void relaxGotNoPic(uint8_t *loc, uint64_t val, uint8_t op,
// See "TEST-Logical Compare" (4-428 Vol. 2B).
loc[-2] = 0xf7;
// Move R bit to the B bit in REX byte.
// Move R bit to the B bit in REX/REX2 byte.
// REX byte is encoded as 0100WRXB, where
// 0100 is 4bit fixed pattern.
// REX.W When 1, a 64-bit operand size is used. Otherwise, when 0, the
@@ -932,7 +936,17 @@ static void relaxGotNoPic(uint8_t *loc, uint64_t val, uint8_t op,
// REX.B This 1-bit value is an extension to the MODRM.rm field or the
// SIB.base field.
// See "2.2.1.2 More on REX Prefix Fields " (2-8 Vol. 2A).
loc[-3] = (rex & ~0x4) | (rex & 0x4) >> 2;
//
// REX2 prefix is encoded as 0xd5|M|R2|X2|B2|WRXB, where
// 0xd5 is 1byte fixed pattern.
// REX2's [W,R,X,B] have the same meanings as REX's.
// REX2.M encodes the map id.
// R2/X2/B2 provides the fifth and most siginicant bits of the R/X/B
// register identifiers, each of which can now address all 32 GPRs.
if (isRex2)
loc[-3] = (rex & ~0x44) | (rex & 0x44) >> 2;
else
loc[-3] = (rex & ~0x4) | (rex & 0x4) >> 2;
write32le(loc, val);
return;
}
@@ -953,7 +967,10 @@ static void relaxGotNoPic(uint8_t *loc, uint64_t val, uint8_t op,
// "INSTRUCTION SET REFERENCE, N-Z" (Vol. 2B 4-1) for
// descriptions about each operation.
loc[-2] = 0x81;
loc[-3] = (rex & ~0x4) | (rex & 0x4) >> 2;
if (isRex2)
loc[-3] = (rex & ~0x44) | (rex & 0x44) >> 2;
else
loc[-3] = (rex & ~0x4) | (rex & 0x4) >> 2;
write32le(loc, val);
}
@@ -974,7 +991,7 @@ static void relaxGot(uint8_t *loc, const Relocation &rel, uint64_t val) {
// We are relaxing a rip relative to an absolute, so compensate
// for the old -4 addend.
assert(!ctx.arg.isPic);
relaxGotNoPic(loc, val + 4, op, modRm);
relaxGotNoPic(loc, val + 4, op, modRm, rel.type == R_X86_64_REX2_GOTPCRELX);
return;
}

10
lld/test/ELF/x86-64-gotpc-no-relax-err.s
View File

@@ -7,15 +7,19 @@
## `>>> defined in` for linker synthesized __stop_* symbols (there is no
## associated file or linker script line number).
# CHECK: error: {{.*}}:(.text+0x2): relocation R_X86_64_GOTPCRELX out of range: 2147483658 is not in [-2147483648, 2147483647]; references '__stop_data'
# CHECK: error: {{.*}}:(.text+0x2): relocation R_X86_64_GOTPCRELX out of range: 2147483666 is not in [-2147483648, 2147483647]; references '__stop_data'
# CHECK-NEXT: >>> defined in <internal>
# CHECK-EMPTY:
# CHECK-NEXT: error: {{.*}}:(.text+0x9): relocation R_X86_64_REX_GOTPCRELX out of range: 2147483651 is not in [-2147483648, 2147483647]; references '__stop_data'
# CHECK-NEXT: error: {{.*}}:(.text+0x9): relocation R_X86_64_REX_GOTPCRELX out of range: 2147483659 is not in [-2147483648, 2147483647]; references '__stop_data'
# CHECK-NEXT: >>> defined in <internal>
# CHECK-EMPTY:
# CHECK-NEXT: error: {{.*}}:(.text+0x11): relocation R_X86_64_REX2_GOTPCRELX out of range: 2147483651 is not in [-2147483648, 2147483647]; references '__stop_data'
# CHECK-NEXT: >>> defined in <internal>
#--- a.s
movl __stop_data@GOTPCREL(%rip), %eax # out of range
movq __stop_data@GOTPCREL(%rip), %rax # out of range
movq __stop_data@GOTPCREL(%rip), %r16 # out of range
movq __stop_data@GOTPCREL(%rip), %rax # in range
.section data,"aw",@progbits
@@ -23,5 +27,5 @@
#--- lds
SECTIONS {
.text 0x200000 : { *(.text) }
.got 0x80200010 : { *(.got) }
.got 0x80200016 : { *(.got) }
}

109
lld/test/ELF/x86-64-gotpc-relax-nopic.s
View File

@@ -10,30 +10,39 @@
# SYMRELOC: Symbols [
# SYMRELOC: Symbol {
# SYMRELOC: Name: bar
# SYMRELOC-NEXT: Value: 0x203248
# SYMRELOC-NEXT: Value: 0x203290
## 2105751 = 0x202197 (bar)
# DISASM: Disassembly of section .text:
# DISASM-EMPTY:
# DISASM-NEXT: <_start>:
# DISASM-NEXT: 2011c8: adcl {{.*}}(%rip), %eax # 0x202240
# DISASM-NEXT: addl {{.*}}(%rip), %ebx # 0x202240
# DISASM-NEXT: andl {{.*}}(%rip), %ecx # 0x202240
# DISASM-NEXT: cmpl {{.*}}(%rip), %edx # 0x202240
# DISASM-NEXT: orl {{.*}}(%rip), %edi # 0x202240
# DISASM-NEXT: sbbl {{.*}}(%rip), %esi # 0x202240
# DISASM-NEXT: subl {{.*}}(%rip), %ebp # 0x202240
# DISASM-NEXT: xorl $0x203248, %r8d
# DISASM-NEXT: testl $0x203248, %r15d
# DISASM-NEXT: 201200: adcq $0x203248, %rax
# DISASM-NEXT: addq $0x203248, %rbx
# DISASM-NEXT: andq $0x203248, %rcx
# DISASM-NEXT: cmpq $0x203248, %rdx
# DISASM-NEXT: orq $0x203248, %rdi
# DISASM-NEXT: sbbq $0x203248, %rsi
# DISASM-NEXT: subq $0x203248, %rbp
# DISASM-NEXT: xorq $0x203248, %r8
# DISASM-NEXT: testq $0x203248, %r15
# DISASM-NEXT: 2011c8: adcl {{.*}}(%rip), %eax # 0x202288
# DISASM-NEXT: addl {{.*}}(%rip), %ebx # 0x202288
# DISASM-NEXT: andl {{.*}}(%rip), %ecx # 0x202288
# DISASM-NEXT: cmpl {{.*}}(%rip), %edx # 0x202288
# DISASM-NEXT: orl {{.*}}(%rip), %edi # 0x202288
# DISASM-NEXT: sbbl {{.*}}(%rip), %esi # 0x202288
# DISASM-NEXT: subl {{.*}}(%rip), %ebp # 0x202288
# DISASM-NEXT: xorl $0x203290, %r8d
# DISASM-NEXT: testl $0x203290, %r15d
# DISASM-NEXT: 201200: adcq $0x203290, %rax
# DISASM-NEXT: addq $0x203290, %rbx
# DISASM-NEXT: andq $0x203290, %rcx
# DISASM-NEXT: cmpq $0x203290, %rdx
# DISASM-NEXT: orq $0x203290, %rdi
# DISASM-NEXT: sbbq $0x203290, %rsi
# DISASM-NEXT: subq $0x203290, %rbp
# DISASM-NEXT: xorq $0x203290, %r8
# DISASM-NEXT: testq $0x203290, %r15
# DISASM-NEXT: 20123f: adcq $0x203290, %r16
# DISASM-NEXT: addq $0x203290, %r17
# DISASM-NEXT: andq $0x203290, %r18
# DISASM-NEXT: cmpq $0x203290, %r19
# DISASM-NEXT: orq $0x203290, %r20
# DISASM-NEXT: sbbq $0x203290, %r21
# DISASM-NEXT: subq $0x203290, %r22
# DISASM-NEXT: xorq $0x203290, %r23
# DISASM-NEXT: testq $0x203290, %r24
# RUN: ld.lld --hash-style=sysv -shared %t.o -o %t2
# RUN: llvm-readobj -S -r -d %t2 | FileCheck --check-prefix=SEC-PIC %s
@@ -46,8 +55,8 @@
# SEC-PIC-NEXT: SHF_ALLOC
# SEC-PIC-NEXT: SHF_WRITE
# SEC-PIC-NEXT: ]
# SEC-PIC-NEXT: Address: 0x2380
# SEC-PIC-NEXT: Offset: 0x380
# SEC-PIC-NEXT: Address: 0x23C8
# SEC-PIC-NEXT: Offset: 0x3C8
# SEC-PIC-NEXT: Size: 8
# SEC-PIC-NEXT: Link:
# SEC-PIC-NEXT: Info:
@@ -57,7 +66,7 @@
# SEC-PIC: 0x000000006FFFFFF9 RELACOUNT 1
# SEC-PIC: Relocations [
# SEC-PIC-NEXT: Section ({{.*}}) .rela.dyn {
# SEC-PIC-NEXT: 0x2380 R_X86_64_RELATIVE - 0x3388
# SEC-PIC-NEXT: 0x23C8 R_X86_64_RELATIVE - 0x33D0
# SEC-PIC-NEXT: }
# SEC-PIC-NEXT: ]
@@ -65,24 +74,33 @@
# DISASM-PIC: Disassembly of section .text:
# DISASM-PIC-EMPTY:
# DISASM-PIC-NEXT: <_start>:
# DISASM-PIC-NEXT: 1268: adcl {{.*}}(%rip), %eax # 0x2380
# DISASM-PIC-NEXT: addl {{.*}}(%rip), %ebx # 0x2380
# DISASM-PIC-NEXT: andl {{.*}}(%rip), %ecx # 0x2380
# DISASM-PIC-NEXT: cmpl {{.*}}(%rip), %edx # 0x2380
# DISASM-PIC-NEXT: orl {{.*}}(%rip), %edi # 0x2380
# DISASM-PIC-NEXT: sbbl {{.*}}(%rip), %esi # 0x2380
# DISASM-PIC-NEXT: subl {{.*}}(%rip), %ebp # 0x2380
# DISASM-PIC-NEXT: xorl {{.*}}(%rip), %r8d # 0x2380
# DISASM-PIC-NEXT: testl %r15d, {{.*}}(%rip) # 0x2380
# DISASM-PIC-NEXT: 12a0: adcq {{.*}}(%rip), %rax # 0x2380
# DISASM-PIC-NEXT: addq {{.*}}(%rip), %rbx # 0x2380
# DISASM-PIC-NEXT: andq {{.*}}(%rip), %rcx # 0x2380
# DISASM-PIC-NEXT: cmpq {{.*}}(%rip), %rdx # 0x2380
# DISASM-PIC-NEXT: orq {{.*}}(%rip), %rdi # 0x2380
# DISASM-PIC-NEXT: sbbq {{.*}}(%rip), %rsi # 0x2380
# DISASM-PIC-NEXT: subq {{.*}}(%rip), %rbp # 0x2380
# DISASM-PIC-NEXT: xorq {{.*}}(%rip), %r8 # 0x2380
# DISASM-PIC-NEXT: testq %r15, {{.*}}(%rip) # 0x2380
# DISASM-PIC-NEXT: 1268: adcl {{.*}}(%rip), %eax # 0x23c8
# DISASM-PIC-NEXT: addl {{.*}}(%rip), %ebx # 0x23c8
# DISASM-PIC-NEXT: andl {{.*}}(%rip), %ecx # 0x23c8
# DISASM-PIC-NEXT: cmpl {{.*}}(%rip), %edx # 0x23c8
# DISASM-PIC-NEXT: orl {{.*}}(%rip), %edi # 0x23c8
# DISASM-PIC-NEXT: sbbl {{.*}}(%rip), %esi # 0x23c8
# DISASM-PIC-NEXT: subl {{.*}}(%rip), %ebp # 0x23c8
# DISASM-PIC-NEXT: xorl {{.*}}(%rip), %r8d # 0x23c8
# DISASM-PIC-NEXT: testl %r15d, {{.*}}(%rip) # 0x23c8
# DISASM-PIC-NEXT: 12a0: adcq {{.*}}(%rip), %rax # 0x23c8
# DISASM-PIC-NEXT: addq {{.*}}(%rip), %rbx # 0x23c8
# DISASM-PIC-NEXT: andq {{.*}}(%rip), %rcx # 0x23c8
# DISASM-PIC-NEXT: cmpq {{.*}}(%rip), %rdx # 0x23c8
# DISASM-PIC-NEXT: orq {{.*}}(%rip), %rdi # 0x23c8
# DISASM-PIC-NEXT: sbbq {{.*}}(%rip), %rsi # 0x23c8
# DISASM-PIC-NEXT: subq {{.*}}(%rip), %rbp # 0x23c8
# DISASM-PIC-NEXT: xorq {{.*}}(%rip), %r8 # 0x23c8
# DISASM-PIC-NEXT: testq %r15, {{.*}}(%rip) # 0x23c8
# DISASM-PIC-NEXT: 12df: adcq {{.*}}(%rip), %r16 # 0x23c8
# DISASM-PIC-NEXT: addq {{.*}}(%rip), %r17 # 0x23c8
# DISASM-PIC-NEXT: andq {{.*}}(%rip), %r18 # 0x23c8
# DISASM-PIC-NEXT: cmpq {{.*}}(%rip), %r19 # 0x23c8
# DISASM-PIC-NEXT: orq {{.*}}(%rip), %r20 # 0x23c8
# DISASM-PIC-NEXT: sbbq {{.*}}(%rip), %r21 # 0x23c8
# DISASM-PIC-NEXT: subq {{.*}}(%rip), %r22 # 0x23c8
# DISASM-PIC-NEXT: xorq {{.*}}(%rip), %r23 # 0x23c8
# DISASM-PIC-NEXT: testq %r24, {{.*}}(%rip) # 0x23c8
.data
.type bar, @object
@@ -115,3 +133,14 @@ _start:
subq bar@GOTPCREL(%rip), %rbp
xorq bar@GOTPCREL(%rip), %r8
testq %r15, bar@GOTPCREL(%rip)
## R_X86_64_REX2_GOTPCRELX
adcq bar@GOTPCREL(%rip), %r16
addq bar@GOTPCREL(%rip), %r17
andq bar@GOTPCREL(%rip), %r18
cmpq bar@GOTPCREL(%rip), %r19
orq bar@GOTPCREL(%rip), %r20
sbbq bar@GOTPCREL(%rip), %r21
subq bar@GOTPCREL(%rip), %r22
xorq bar@GOTPCREL(%rip), %r23
testq %r24, bar@GOTPCREL(%rip)

54
lld/test/ELF/x86-64-gotpc-relax.s
View File

@@ -1,5 +1,5 @@
# REQUIRES: x86
## Test R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX GOT optimization.
## Test R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX/R_X86_64_REX2_GOTPCRELX GOT optimization.
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
# RUN: ld.lld %t.o -o %t1 --no-apply-dynamic-relocs
@@ -15,16 +15,16 @@
## In our implementation, .got is retained even if all GOT-generating relocations are optimized.
# CHECK: Name Type Address Off Size ES Flg Lk Inf Al
# CHECK: .iplt PROGBITS 0000000000201280 000280 000010 00 AX 0 0 16
# CHECK-NEXT: .got PROGBITS 0000000000202290 000290 000000 00 WA 0 0 8
# CHECK: .iplt PROGBITS 00000000002012e0 0002e0 000010 00 AX 0 0 16
# CHECK-NEXT: .got PROGBITS 00000000002022f0 0002f0 000000 00 WA 0 0 8
## There is one R_X86_64_IRELATIVE relocations.
# RELOC-LABEL: Relocation section '.rela.dyn' at offset {{.*}} contains 1 entry:
# CHECK: Offset Info Type Symbol's Value Symbol's Name + Addend
# CHECK: 0000000000203290 0000000000000025 R_X86_64_IRELATIVE 2011e2
# CHECK: 00000000002032f0 0000000000000025 R_X86_64_IRELATIVE 2011e2
# CHECK-LABEL: Hex dump of section '.got.plt':
# NOAPPLY-NEXT: 0x00203290 00000000 00000000
# APPLY-NEXT: 0x00203290 e2112000 00000000
# NOAPPLY-NEXT: 0x002032f0 00000000 00000000
# APPLY-NEXT: 0x002032f0 e2112000 00000000
# 0x201173 + 7 - 10 = 0x201170
# 0x20117a + 7 - 17 = 0x201170
@@ -43,20 +43,20 @@
# DISASM-NEXT: leaq -17(%rip), %rax
# DISASM-NEXT: leaq -23(%rip), %rax
# DISASM-NEXT: leaq -30(%rip), %rax
# DISASM-NEXT: movq 8330(%rip), %rax
# DISASM-NEXT: movq 8323(%rip), %rax
# DISASM-NEXT: movq 8426(%rip), %rax
# DISASM-NEXT: movq 8419(%rip), %rax
# DISASM-NEXT: leaq -52(%rip), %rax
# DISASM-NEXT: leaq -59(%rip), %rax
# DISASM-NEXT: leaq -65(%rip), %rax
# DISASM-NEXT: leaq -72(%rip), %rax
# DISASM-NEXT: movq 8288(%rip), %rax
# DISASM-NEXT: movq 8281(%rip), %rax
# DISASM-NEXT: movq 8384(%rip), %rax
# DISASM-NEXT: movq 8377(%rip), %rax
# DISASM-NEXT: callq 0x2011e0 <foo>
# DISASM-NEXT: callq 0x2011e0 <foo>
# DISASM-NEXT: callq 0x2011e1 <hid>
# DISASM-NEXT: callq 0x2011e1 <hid>
# DISASM-NEXT: callq *8251(%rip)
# DISASM-NEXT: callq *8245(%rip)
# DISASM-NEXT: callq *8347(%rip)
# DISASM-NEXT: callq *8341(%rip)
# DISASM-NEXT: jmp 0x2011e0 <foo>
# DISASM-NEXT: nop
# DISASM-NEXT: jmp 0x2011e0 <foo>
@@ -65,13 +65,26 @@
# DISASM-NEXT: nop
# DISASM-NEXT: jmp 0x2011e1 <hid>
# DISASM-NEXT: nop
# DISASM-NEXT: jmpq *8215(%rip)
# DISASM-NEXT: jmpq *8209(%rip)
# DISASM-NEXT: jmpq *8311(%rip)
# DISASM-NEXT: jmpq *8305(%rip)
# DISASM-NEXT: leaq -167(%rip), %r16
# DISASM-NEXT: leaq -175(%rip), %r16
# DISASM-NEXT: leaq -182(%rip), %r16
# DISASM-NEXT: leaq -190(%rip), %r16
# DISASM-NEXT: movq 8265(%rip), %r16
# DISASM-NEXT: movq 8257(%rip), %r16
# DISASM-NEXT: leaq -215(%rip), %r16
# DISASM-NEXT: leaq -223(%rip), %r16
# DISASM-NEXT: leaq -230(%rip), %r16
# DISASM-NEXT: leaq -238(%rip), %r16
# DISASM-NEXT: movq 8217(%rip), %r16
# DISASM-NEXT: movq 8209(%rip), %r16
# NORELAX-LABEL: <_start>:
# NORELAX-COUNT-12: movq
# NORELAX-COUNT-6: callq *
# NORELAX-COUNT-6: jmpq *
# NORELAX-COUNT-12: movq
.text
.globl foo
@@ -120,3 +133,16 @@ _start:
jmp *hid@GOTPCREL(%rip)
jmp *ifunc@GOTPCREL(%rip)
jmp *ifunc@GOTPCREL(%rip)
movq foo@GOTPCREL(%rip), %r16
movq foo@GOTPCREL(%rip), %r16
movq hid@GOTPCREL(%rip), %r16
movq hid@GOTPCREL(%rip), %r16
movq ifunc@GOTPCREL(%rip), %r16
movq ifunc@GOTPCREL(%rip), %r16
movq foo@GOTPCREL(%rip), %r16
movq foo@GOTPCREL(%rip), %r16
movq hid@GOTPCREL(%rip), %r16
movq hid@GOTPCREL(%rip), %r16
movq ifunc@GOTPCREL(%rip), %r16
movq ifunc@GOTPCREL(%rip), %r16