forked from OSchip/llvm-project
107 lines
2.6 KiB
ArmAsm
107 lines
2.6 KiB
ArmAsm
// 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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// REQUIRES: arm
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// Test the handling of the global-dynamic TLS model. Dynamic Loader finds
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// module index R_ARM_TLS_DTPMOD32 and the offset within the module
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// R_ARM_TLS_DTPOFF32. One of the variables is hidden which permits relaxation
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// to local dynamic
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.text
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.syntax unified
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.globl func
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.p2align 2
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.type func,%function
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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_GD32 relocations
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// Allocates a pair of GOT entries dynamically relocated by R_ARM_TLS_DTPMOD32
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// and R_ARM_TLS_DTPOFF32 respectively. The literal contains the offset of the
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// first GOT entry from the place
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.Lt0: .word x(TLSGD) + (. - .L0 - 8)
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.Lt1: .word y(TLSGD) + (. - .L1 - 8)
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.Lt2: .word z(TLSGD) + (. - .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-NEXT: ]
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// SEC-NEXT: Address: 0x2000
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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: 0x2004
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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: 0x204C
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// SEC: Size: 24
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// SEC: Dynamic Relocations {
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// SEC-NEXT: 0x205C R_ARM_TLS_DTPMOD32 -
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// SEC-NEXT: 0x204C R_ARM_TLS_DTPMOD32 x
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// SEC-NEXT: 0x2050 R_ARM_TLS_DTPOFF32 x
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// SEC-NEXT: 0x2054 R_ARM_TLS_DTPMOD32 y
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// SEC-NEXT: 0x2058 R_ARM_TLS_DTPOFF32 y
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// CHECK: Disassembly
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// CHECK-NEXT: func:
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// CHECK-NEXT: 1000: 00 f0 20 e3 nop
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// CHECK-NEXT: 1004: 00 f0 20 e3 nop
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// CHECK-NEXT: 1008: 00 f0 20 e3 nop
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// (0x204c - 0x100c) + (0x100c - 0x1000 - 8) = 0x1044
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// CHECK: 100c: 44 10 00 00
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// (0x2054 - 0x1010) + (0x1010 - 0x1004 - 8) = 0x1048
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// CHECK-NEXT: 1010: 48 10 00 00
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// (0x205c - 0x1014) + (0x1014 - 0x1008 - 8) = 0x104c
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// CHECK-NEXT: 1014: 4c 10 00 00
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