forked from OSchip/llvm-project
312 lines
13 KiB
ArmAsm
312 lines
13 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %p/Inputs/arm-plt-reloc.s -o %t1
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// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t2
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// RUN: ld.lld %t1 %t2 -o %t
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// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t | FileCheck %s
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// RUN: ld.lld -shared %t1 %t2 -o %t3
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// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t3 | FileCheck -check-prefix=DSO %s
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// RUN: llvm-readobj -S -r %t3 | FileCheck -check-prefix=DSOREL %s
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//
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// Test PLT entry generation
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.syntax unified
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.text
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.align 2
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.globl _start
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.type _start,%function
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_start:
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b func1
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bl func2
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beq func3
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// Executable, expect no PLT
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// CHECK: Disassembly of section .text:
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// CHECK-EMPTY:
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// CHECK-NEXT: func1:
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// CHECK-NEXT: 110b4: bx lr
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// CHECK: func2:
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// CHECK-NEXT: 110b8: bx lr
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// CHECK: func3:
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// CHECK-NEXT: 110bc: bx lr
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// CHECK: _start:
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// CHECK-NEXT: 110c0: b #-20 <func1>
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// CHECK-NEXT: 110c4: bl #-20 <func2>
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// CHECK-NEXT: 110c8: beq #-20 <func3>
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// Expect PLT entries as symbols can be preempted
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// The .got.plt and .plt displacement is small so we can use small PLT entries.
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// DSO: Disassembly of section .text:
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// DSO-EMPTY:
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// DSO-NEXT: func1:
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// DSO-NEXT: 1214: bx lr
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// DSO: func2:
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// DSO-NEXT: 1218: bx lr
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// DSO: func3:
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// DSO-NEXT: 121c: bx lr
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// DSO: _start:
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// S(0x1214) - P(0x1220) + A(-8) = 0x2c = 32
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// DSO-NEXT: 1220: b #40
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// S(0x1218) - P(0x1224) + A(-8) = 0x38 = 56
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// DSO-NEXT: 1224: bl #52
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// S(0x121c) - P(0x1228) + A(-8) = 0x44 = 68
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// DSO-NEXT: 1228: beq #64
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// DSO-EMPTY:
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// DSO-NEXT: Disassembly of section .plt:
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// DSO-EMPTY:
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// DSO-NEXT: $a:
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// DSO-NEXT: 1230: str lr, [sp, #-4]!
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// (0x1234 + 8) + (0 RoR 12) + 8192 + 164 = 0x32e0 = .got.plt[2]
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// DSO-NEXT: 1234: add lr, pc, #0, #12
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// DSO-NEXT: 1238: add lr, lr, #8192
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// DSO-NEXT: 123c: ldr pc, [lr, #164]!
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// DSO: $d:
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// DSO-NEXT: 1240: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSO-NEXT: 1244: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSO-NEXT: 1248: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSO-NEXT: 124c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSO: $a:
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// (0x1250 + 8) + (0 RoR 12) + 8192 + 140 = 0x32e4
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// DSO-NEXT: 1250: add r12, pc, #0, #12
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// DSO-NEXT: 1254: add r12, r12, #8192
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// DSO-NEXT: 1258: ldr pc, [r12, #140]!
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// DSO: $d:
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// DSO-NEXT: 125c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSO: $a:
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// (0x1260 + 8) + (0 RoR 12) + 8192 + 128 = 0x32e8
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// DSO-NEXT: 1260: add r12, pc, #0, #12
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// DSO-NEXT: 1264: add r12, r12, #8192
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// DSO-NEXT: 1268: ldr pc, [r12, #128]!
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// DSO: $d:
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// DSO-NEXT: 126c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSO: $a:
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// (0x1270 + 8) + (0 RoR 12) + 8192 + 116 = 0x32ec
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// DSO-NEXT: 1270: add r12, pc, #0, #12
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// DSO-NEXT: 1274: add r12, r12, #8192
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// DSO-NEXT: 1278: ldr pc, [r12, #116]!
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// DSO: $d:
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// DSO-NEXT: 127c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSOREL: Name: .got.plt
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// DSOREL-NEXT: Type: SHT_PROGBITS
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// DSOREL-NEXT: Flags [
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// DSOREL-NEXT: SHF_ALLOC
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// DSOREL-NEXT: SHF_WRITE
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// DSOREL-NEXT: ]
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// DSOREL-NEXT: Address: 0x32D8
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// DSOREL-NEXT: Offset:
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// DSOREL-NEXT: Size: 24
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// DSOREL-NEXT: Link:
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// DSOREL-NEXT: Info:
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// DSOREL-NEXT: AddressAlignment: 4
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// DSOREL-NEXT: EntrySize:
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// DSOREL: Relocations [
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// DSOREL-NEXT: Section {{.*}} .rel.plt {
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// DSOREL-NEXT: 0x32E4 R_ARM_JUMP_SLOT func1 0x0
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// DSOREL-NEXT: 0x32E8 R_ARM_JUMP_SLOT func2 0x0
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// DSOREL-NEXT: 0x32EC R_ARM_JUMP_SLOT func3 0x0
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// Test a large separation between the .plt and .got.plt
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// The .got.plt and .plt displacement is large but still within the range
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// of the short plt sequence.
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// RUN: echo "SECTIONS { \
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// RUN: .text 0x1000 : { *(.text) } \
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// RUN: .plt 0x2000 : { *(.plt) *(.plt.*) } \
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// RUN: .got.plt 0x1100000 : { *(.got.plt) } \
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// RUN: }" > %t.script
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// RUN: ld.lld --hash-style=sysv --script %t.script -shared %t1 %t2 -o %t4
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// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t4 | FileCheck --check-prefix=CHECKHIGH %s
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// RUN: llvm-readobj -S -r %t4 | FileCheck --check-prefix=DSORELHIGH %s
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// CHECKHIGH: Disassembly of section .text:
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// CHECKHIGH-EMPTY:
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// CHECKHIGH-NEXT: func1:
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// CHECKHIGH-NEXT: 1000: bx lr
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// CHECKHIGH: func2:
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// CHECKHIGH-NEXT: 1004: bx lr
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// CHECKHIGH: func3:
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// CHECKHIGH-NEXT: 1008: bx lr
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// CHECKHIGH: _start:
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// CHECKHIGH-NEXT: 100c: b #4108 <$a>
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// CHECKHIGH-NEXT: 1010: bl #4120 <$a>
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// CHECKHIGH-NEXT: 1014: beq #4132 <$a>
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// CHECKHIGH-EMPTY:
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// CHECKHIGH-NEXT: Disassembly of section .plt:
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// CHECKHIGH-EMPTY:
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// CHECKHIGH-NEXT: $a:
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// CHECKHIGH-NEXT: 2000: str lr, [sp, #-4]!
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// CHECKHIGH-NEXT: 2004: add lr, pc, #16, #12
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// CHECKHIGH-NEXT: 2008: add lr, lr, #1036288
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// CHECKHIGH-NEXT: 200c: ldr pc, [lr, #4092]!
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// CHECKHIGH: $d:
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// CHECKHIGH-NEXT: 2010: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKHIGH-NEXT: 2014: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKHIGH-NEXT: 2018: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKHIGH-NEXT: 201c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKHIGH: $a:
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// CHECKHIGH-NEXT: 2020: add r12, pc, #16, #12
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// CHECKHIGH-NEXT: 2024: add r12, r12, #1036288
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// CHECKHIGH-NEXT: 2028: ldr pc, [r12, #4068]!
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// CHECKHIGH: $d:
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// CHECKHIGH-NEXT: 202c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKHIGH: $a:
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// CHECKHIGH-NEXT: 2030: add r12, pc, #16, #12
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// CHECKHIGH-NEXT: 2034: add r12, r12, #1036288
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// CHECKHIGH-NEXT: 2038: ldr pc, [r12, #4056]!
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// CHECKHIGH: $d:
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// CHECKHIGH-NEXT: 203c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKHIGH: $a:
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// CHECKHIGH-NEXT: 2040: add r12, pc, #16, #12
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// CHECKHIGH-NEXT: 2044: add r12, r12, #1036288
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// CHECKHIGH-NEXT: 2048: ldr pc, [r12, #4044]!
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// CHECKHIGH: $d:
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// CHECKHIGH-NEXT: 204c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSORELHIGH: Name: .got.plt
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// DSORELHIGH-NEXT: Type: SHT_PROGBITS
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// DSORELHIGH-NEXT: Flags [
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// DSORELHIGH-NEXT: SHF_ALLOC
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// DSORELHIGH-NEXT: SHF_WRITE
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// DSORELHIGH-NEXT: ]
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// DSORELHIGH-NEXT: Address: 0x1100000
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// DSORELHIGH: Relocations [
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// DSORELHIGH-NEXT: Section {{.*}} .rel.plt {
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// DSORELHIGH-NEXT: 0x110000C R_ARM_JUMP_SLOT func1 0x0
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// DSORELHIGH-NEXT: 0x1100010 R_ARM_JUMP_SLOT func2 0x0
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// DSORELHIGH-NEXT: 0x1100014 R_ARM_JUMP_SLOT func3 0x0
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// Test a very large separation between the .plt and .got.plt so we must use
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// large plt entries that do not have any range restriction.
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// RUN: echo "SECTIONS { \
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// RUN: .text 0x1000 : { *(.text) } \
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// RUN: .plt 0x2000 : { *(.plt) *(.plt.*) } \
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// RUN: .got.plt 0x11111100 : { *(.got.plt) } \
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// RUN: }" > %t2.script
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// RUN: ld.lld --hash-style=sysv --script %t2.script -shared %t1 %t2 -o %t5
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// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t5 | FileCheck --check-prefix=CHECKLONG %s
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// RUN: llvm-readobj -S -r %t5 | FileCheck --check-prefix=DSORELLONG %s
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// CHECKLONG: Disassembly of section .text:
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// CHECKLONG-EMPTY:
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// CHECKLONG-NEXT: func1:
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// CHECKLONG-NEXT: 1000: bx lr
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// CHECKLONG: func2:
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// CHECKLONG-NEXT: 1004: bx lr
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// CHECKLONG: func3:
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// CHECKLONG-NEXT: 1008: bx lr
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// CHECKLONG: _start:
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// CHECKLONG-NEXT: 100c: b #4108 <$a>
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// CHECKLONG-NEXT: 1010: bl #4120 <$a>
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// CHECKLONG-NEXT: 1014: beq #4132 <$a>
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// CHECKLONG-EMPTY:
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// CHECKLONG-NEXT: Disassembly of section .plt:
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// CHECKLONG-EMPTY:
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// CHECKLONG-NEXT: $a:
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// CHECKLONG-NEXT: 2000: str lr, [sp, #-4]!
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// CHECKLONG-NEXT: 2004: ldr lr, [pc, #4]
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// CHECKLONG-NEXT: 2008: add lr, pc, lr
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// CHECKLONG-NEXT: 200c: ldr pc, [lr, #8]!
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// CHECKLONG: $d:
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// CHECKLONG-NEXT: 2010: f0 f0 10 11 .word 0x1110f0f0
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// CHECKLONG-NEXT: 2014: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKLONG-NEXT: 2018: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKLONG-NEXT: 201c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKLONG: $a:
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// CHECKLONG-NEXT: 2020: ldr r12, [pc, #4]
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// CHECKLONG-NEXT: 2024: add r12, r12, pc
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// CHECKLONG-NEXT: 2028: ldr pc, [r12]
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// CHECKLONG: $d:
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// CHECKLONG-NEXT: 202c: e0 f0 10 11 .word 0x1110f0e0
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// CHECKLONG: $a:
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// CHECKLONG-NEXT: 2030: ldr r12, [pc, #4]
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// CHECKLONG-NEXT: 2034: add r12, r12, pc
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// CHECKLONG-NEXT: 2038: ldr pc, [r12]
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// CHECKLONG: $d:
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// CHECKLONG-NEXT: 203c: d4 f0 10 11 .word 0x1110f0d4
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// CHECKLONG: $a:
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// CHECKLONG-NEXT: 2040: ldr r12, [pc, #4]
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// CHECKLONG-NEXT: 2044: add r12, r12, pc
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// CHECKLONG-NEXT: 2048: ldr pc, [r12]
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// CHECKLONG: $d:
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// CHECKLONG-NEXT: 204c: c8 f0 10 11 .word 0x1110f0c8
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// DSORELLONG: Name: .got.plt
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// DSORELLONG-NEXT: Type: SHT_PROGBITS
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// DSORELLONG-NEXT: Flags [
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// DSORELLONG-NEXT: SHF_ALLOC
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// DSORELLONG-NEXT: SHF_WRITE
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// DSORELLONG-NEXT: ]
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// DSORELLONG-NEXT: Address: 0x11111100
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// DSORELLONG: Relocations [
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// DSORELLONG-NEXT: Section {{.*}} .rel.plt {
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// DSORELLONG-NEXT: 0x1111110C R_ARM_JUMP_SLOT func1 0x0
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// DSORELLONG-NEXT: 0x11111110 R_ARM_JUMP_SLOT func2 0x0
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// DSORELLONG-NEXT: 0x11111114 R_ARM_JUMP_SLOT func3 0x0
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// Test a separation between the .plt and .got.plt that is part in range of
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// short table entries and part needing long entries. We use the long entries
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// only when we need to.
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// RUN: echo "SECTIONS { \
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// RUN: .text 0x1000 : { *(.text) } \
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// RUN: .plt 0x2000 : { *(.plt) *(.plt.*) } \
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// RUN: .got.plt 0x8002020 : { *(.got.plt) } \
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// RUN: }" > %t3.script
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// RUN: ld.lld --hash-style=sysv --script %t3.script -shared %t1 %t2 -o %t6
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// RUN: llvm-objdump -triple=armv7a-none-linux-gnueabi -d --no-show-raw-insn %t6 | FileCheck --check-prefix=CHECKMIX %s
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// RUN: llvm-readobj -S -r %t6 | FileCheck --check-prefix=DSORELMIX %s
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// CHECKMIX: Disassembly of section .text:
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// CHECKMIX-EMPTY:
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// CHECKMIX-NEXT: func1:
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// CHECKMIX-NEXT: 1000: bx lr
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// CHECKMIX: func2:
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// CHECKMIX-NEXT: 1004: bx lr
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// CHECKMIX: func3:
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// CHECKMIX-NEXT: 1008: bx lr
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// CHECKMIX: _start:
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// CHECKMIX-NEXT: 100c: b #4108 <$a>
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// CHECKMIX-NEXT: 1010: bl #4120 <$a>
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// CHECKMIX-NEXT: 1014: beq #4132 <$a>
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// CHECKMIX-EMPTY:
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// CHECKMIX-NEXT: Disassembly of section .plt:
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// CHECKMIX-EMPTY:
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// CHECKMIX-NEXT: $a:
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// CHECKMIX-NEXT: 2000: str lr, [sp, #-4]!
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// CHECKMIX-NEXT: 2004: ldr lr, [pc, #4]
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// CHECKMIX-NEXT: 2008: add lr, pc, lr
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// CHECKMIX-NEXT: 200c: ldr pc, [lr, #8]!
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// CHECKMIX: $d:
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// CHECKMIX-NEXT: 2010: 10 00 00 08 .word 0x08000010
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// CHECKMIX-NEXT: 2014: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKMIX-NEXT: 2018: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKMIX-NEXT: 201c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKMIX: $a:
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// CHECKMIX-NEXT: 2020: ldr r12, [pc, #4]
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// CHECKMIX-NEXT: 2024: add r12, r12, pc
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// CHECKMIX-NEXT: 2028: ldr pc, [r12]
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// CHECKMIX: $d:
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// CHECKMIX-NEXT: 202c: 00 00 00 08 .word 0x08000000
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// CHECKMIX: $a:
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// CHECKMIX-NEXT: 2030: add r12, pc, #133169152
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// CHECKMIX-NEXT: 2034: add r12, r12, #1044480
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// CHECKMIX-NEXT: 2038: ldr pc, [r12, #4088]!
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// CHECKMIX: $d:
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// CHECKMIX-NEXT: 203c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// CHECKMIX: $a:
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// CHECKMIX-NEXT: 2040: add r12, pc, #133169152
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// CHECKMIX-NEXT: 2044: add r12, r12, #1044480
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// CHECKMIX-NEXT: 2048: ldr pc, [r12, #4076]!
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// CHECKMIX: $d:
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// CHECKMIX-NEXT: 204c: d4 d4 d4 d4 .word 0xd4d4d4d4
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// DSORELMIX: Name: .got.plt
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// DSORELMIX-NEXT: Type: SHT_PROGBITS
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// DSORELMIX-NEXT: Flags [
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// DSORELMIX-NEXT: SHF_ALLOC
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// DSORELMIX-NEXT: SHF_WRITE
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// DSORELMIX-NEXT: ]
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// DSORELMIX-NEXT: Address: 0x8002020
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// DSORELMIX: Section {{.*}} .rel.plt {
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// DSORELMIX-NEXT: 0x800202C R_ARM_JUMP_SLOT func1 0x0
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// DSORELMIX-NEXT: 0x8002030 R_ARM_JUMP_SLOT func2 0x0
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// DSORELMIX-NEXT: 0x8002034 R_ARM_JUMP_SLOT func3 0x0
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