forked from OSchip/llvm-project
86 lines
2.3 KiB
ArmAsm
86 lines
2.3 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
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// RUN: llvm-readobj -S --dyn-relocations %t | FileCheck --check-prefix=SEC %s
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// RUN: llvm-objdump -d --triple=armv7a-linux-gnueabi %t | FileCheck %s
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/// Test the handling of the local exec TLS model. TLS can be resolved
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/// statically for an application. The code sequences assume a thread pointer
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/// in r9
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/// Reject local-exec TLS relocations for -shared.
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// RUN: not ld.lld -shared %t.o -o /dev/null 2>&1 | FileCheck %s --check-prefix=ERR --implicit-check-not=error:
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// ERR: error: relocation R_ARM_TLS_LE32 against x cannot be used with -shared
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// ERR: error: relocation R_ARM_TLS_LE32 against y cannot be used with -shared
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// ERR: error: relocation R_ARM_TLS_LE32 against z cannot be used with -shared
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.text
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.syntax unified
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.globl _start
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.p2align 2
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.type _start,%function
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_start:
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.p2align 2
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/// Generate R_ARM_TLS_LE32 relocations. These resolve statically to the offset
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/// of the variable from the thread pointer
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.Lt0: .word x(TPOFF)
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.Lt1: .word y(TPOFF)
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.Lt2: .word z(TPOFF)
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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-NEXT: ]
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// SEC-NEXT: Address: 0x30120
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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-NEXT: ]
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// SEC-NEXT: Address: 0x30124
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// SEC: Size: 8
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// SEC: Dynamic Relocations {
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// SEC-NEXT: }
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// CHECK: Disassembly of section .text:
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// CHECK-EMPTY:
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// CHECK-NEXT: <_start>:
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/// offset of x from Thread pointer = (TcbSize + 0x0 = 0x8)
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// CHECK-NEXT: 20114: 08 00 00 00
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/// offset of z from Thread pointer = (TcbSize + 0x8 = 0x10)
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// CHECK-NEXT: 20118: 10 00 00 00
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/// offset of y from Thread pointer = (TcbSize + 0x4 = 0xc)
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// CHECK-NEXT: 2011c: 0c 00 00 00
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