forked from OSchip/llvm-project
98 lines
2.4 KiB
ArmAsm
98 lines
2.4 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=armv7a-linux-gnueabi
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// RUN: ld.lld %t.o -o %t.so -shared
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// RUN: llvm-readobj -S --dyn-relocations %t.so | FileCheck --check-prefix=SEC %s
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// RUN: llvm-objdump -d --triple=armv7a-linux-gnueabi %t.so | FileCheck %s
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/// Test the handling of the initial-exec TLS model. Relative location within
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/// static TLS is a run-time constant computed by dynamic loader as a result
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/// of the R_ARM_TLS_TPOFF32 relocation.
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.syntax unified
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.arm
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.globl func
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.type func,%function
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.p2align 2
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func:
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.L0:
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nop
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.L1:
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nop
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.L2:
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nop
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.p2align 2
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/// Generate R_ARM_TLS_IE32 static relocations
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/// Allocates a GOT entry dynamically relocated by R_ARM_TLS_TPOFF32
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/// literal contains the offset of the GOT entry from the place
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.Lt0: .word x(gottpoff) + (. - .L0 - 8)
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.Lt1: .word y(gottpoff) + (. - .L1 - 8)
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.Lt2: .word .TLSSTART(gottpoff) + (. - .L2 - 8)
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/// __thread int x = 10
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/// __thread int y;
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/// __thread int z __attribute((visibility("hidden")))
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.hidden z
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.globl z
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.globl y
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.globl x
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.section .tbss,"awT",%nobits
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.p2align 2
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.TLSSTART:
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.type z, %object
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z:
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.space 4
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.type y, %object
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y:
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.space 4
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.section .tdata,"awT",%progbits
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.p2align 2
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.type x, %object
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x:
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.word 10
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// SEC: Name: .tdata
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// SEC-NEXT: Type: SHT_PROGBITS
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// SEC-NEXT: Flags [
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// SEC-NEXT: SHF_ALLOC
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// SEC-NEXT: SHF_TLS
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// SEC-NEXT: SHF_WRITE
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// SEC: Size: 4
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// SEC: Name: .tbss
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// SEC-NEXT: Type: SHT_NOBITS
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// SEC-NEXT: Flags [
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// SEC-NEXT: SHF_ALLOC
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// SEC-NEXT: SHF_TLS
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// SEC-NEXT: SHF_WRITE
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// SEC: Size: 8
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// SEC: Name: .got
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// SEC-NEXT: Type: SHT_PROGBITS
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// SEC-NEXT: Flags [
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// SEC-NEXT: SHF_ALLOC
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// SEC-NEXT: SHF_WRITE
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// SEC-NEXT: ]
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// SEC-NEXT: Address: 0x20254
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// SEC: Size: 12
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// SEC: Dynamic Relocations {
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// SEC: 0x2025C R_ARM_TLS_TPOFF32
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// SEC: 0x20254 R_ARM_TLS_TPOFF32 x
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// SEC: 0x20258 R_ARM_TLS_TPOFF32 y
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// CHECK: Disassembly of section .text:
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// CHECK-EMPTY:
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// CHECK-NEXT: <func>:
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// CHECK-NEXT: 101e8: 00 f0 20 e3 nop
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// CHECK-NEXT: 101ec: 00 f0 20 e3 nop
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// CHECK-NEXT: 101f0: 00 f0 20 e3 nop
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/// (0x20254 - 0x101f4) + (0x101f4 - 0x101e8 - 8) = 0x10064
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// CHECK: 101f4: 64 00 01 00
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/// (0x20258 - 0x101f8) + (0x101f8 - 0x101ec - 8) = 0x10064
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// CHECK-NEXT: 101f8: 64 00 01 00
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/// (0x2025c - 0x101f8) + (0x101f8 - 0x101f0 - 8) = 0x10064
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// CHECK-NEXT: 101fc: 64 00 01 00
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