2018-08-04 14:47:16 -07:00
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// REQUIRES: arm
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2017-08-27 14:46:59 -07:00
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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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.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: 0x12000
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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: 0x12004
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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-NEXT: _start:
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// offset of x from Thread pointer = (TcbSize + 0x0 = 0x8)
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// CHECK-NEXT: 11000: 08 00 00 00
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// offset of z from Thread pointer = (TcbSize + 0x8 = 0x10)
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// CHECK-NEXT: 11004: 10 00 00 00
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// offset of y from Thread pointer = (TcbSize + 0x4 = 0xc)
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// CHECK-NEXT: 11008: 0c 00 00 00
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