129 lines
4.5 KiB
ArmAsm
129 lines
4.5 KiB
ArmAsm
// REQUIRES: ppc
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// RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %s -o %t.o
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// RUN: ld.lld -shared %t.o -o %t.so
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// RUN: llvm-readelf -relocations --wide %t.o | FileCheck --check-prefix=InputRelocs %s
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// RUN: llvm-readelf -relocations --wide %t.so | FileCheck --check-prefix=OutputRelocs %s
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// RUN: llvm-objdump --section-headers %t.so | FileCheck --check-prefix=CheckGot %s
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// RUN: llvm-objdump -D %t.so | FileCheck --check-prefix=Dis %s
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// RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %s -o %t.o
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// RUN: ld.lld -shared %t.o -o %t.so
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// RUN: llvm-readelf -relocations --wide %t.o | FileCheck --check-prefix=InputRelocs %s
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// RUN: llvm-readelf -relocations --wide %t.so | FileCheck --check-prefix=OutputRelocs %s
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// RUN: llvm-objdump --section-headers %t.so | FileCheck --check-prefix=CheckGot %s
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// RUN: llvm-objdump -D %t.so | FileCheck --check-prefix=Dis %s
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.text
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.abiversion 2
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.globl test
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.p2align 4
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.type test,@function
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test:
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.Lfunc_gep0:
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addis 2, 12, .TOC.-.Lfunc_gep0@ha
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addi 2, 2, .TOC.-.Lfunc_gep0@l
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.Lfunc_lep0:
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.localentry test, .Lfunc_lep0-.Lfunc_gep0
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mflr 0
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std 0, 16(1)
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stdu 1, -32(1)
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addis 3, 2, i@got@tlsld@ha
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addi 3, 3, i@got@tlsld@l
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bl __tls_get_addr(i@tlsld)
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nop
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addis 3, 3, i@dtprel@ha
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lwa 3, i@dtprel@l(3)
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ld 0, 16(1)
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mtlr 0
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blr
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.globl test_hi
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.p2align 4
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.type test_hi,@function
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test_hi:
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lis 3, j@got@tlsld@h
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blr
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.globl test_16
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.p2align 4
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.type test_16,@function
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test_16:
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li 3, k@got@tlsld
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blr
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.type i,@object
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.section .tdata,"awT",@progbits
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.p2align 2
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i:
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.long 55
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.size i, 4
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.type j,@object
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.section .tbss,"awT",@nobits
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.p2align 2
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j:
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.long 0
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.size j, 4
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.type k,@object
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.section .tdata,"awT",@progbits
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.p2align 3
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k:
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.quad 66
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.size k, 8
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// Verify that the input contains all the R_PPC64_GOT_TLSLD16* relocations, as
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// well as the DTPREL relocations used in a typical medium code model
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// local-dynamic variable access.
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// InputRelocs: Relocation section '.rela.text'
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// InputRelocs: R_PPC64_GOT_TLSLD16_HA {{[0-9a-f]+}} i + 0
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// InputRelocs: R_PPC64_GOT_TLSLD16_LO {{[0-9a-f]+}} i + 0
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// InputRelocs: R_PPC64_TLSLD {{[0-9a-f]+}} i + 0
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// InputRelocs: R_PPC64_DTPREL16_HA {{[0-9a-f]+}} i + 0
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// InputRelocs: R_PPC64_DTPREL16_LO_DS {{[0-9a-f]+}} i + 0
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// InputRelocs: R_PPC64_GOT_TLSLD16_HI {{[0-9a-f]+}} j + 0
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// InputRelocs: R_PPC64_GOT_TLSLD16 {{[0-9a-f]+}} k + 0
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// The local dynamic version of tls needs to use the same mechanism to look up
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// a variables address as general-dynamic. ie a call to __tls_get_addr with the
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// address of a tls_index struct as the argument. However for local-dynamic
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// variables all will have the same ti_module, and the offset field is left as
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// as 0, so the same struct can be used for every local-dynamic variable
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// used in the shared-object.
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// OutputRelocs: Relocation section '.rela.dyn' at offset 0x{{[0-9a-f]+}} contains 1 entries:
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// OutputRelocs-NEXT: Offset Info Type Symbol's Value Symbol's Name + Addend
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// OutputRelocs-NEXT: R_PPC64_DTPMOD64
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// Check that the got has 3 entries, 1 for the TOC and 1 stucture of 2 entries
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// for the tls variables. Also verify the address so we can check the offsets
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// we calculate for each relocation type.
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// CheckGot: got 00000018 0000000000020100
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// got starts at 0x20100 so .TOC. will be 0x28100, and the tls_index struct is
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// at 0x20108.
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// #ha(i@got@tlsld) --> (0x20108 - 0x28100 + 0x8000) >> 16 = 0
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// #lo(i@got@tlsld) --> (0x20108 - 0x28100) = -7ff8 = -32760
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// When calculating offset relative to the dynamic thread pointer we have to
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// adjust by 0x8000 since each DTV pointer points 0x8000 bytes past the start of
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// its TLS block.
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// #ha(i@dtprel) --> (0x0 -0x8000 + 0x8000) >> 16 = 0
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// #lo(i@dtprel) --> (0x0 -0x8000) = -0x8000 = -32768
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// Dis: test:
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// Dis: addis 3, 2, 0
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// Dis-NEXT: addi 3, 3, -32760
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// Dis-NEXT: bl .+67108804
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// Dis-NEXT: ld 2, 24(1)
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// Dis-NEXT: addis 3, 3, 0
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// Dis-NEXT: lwa 3, -32768(3)
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// #hi(j@got@tlsld) --> (0x20108 - 0x28100 ) > 16 = -1
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// Dis: test_hi:
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// Dis: lis 3, -1
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// k@got@tlsld --> (0x20108 - 0x28100) = -7ff8 = -32760
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// Dis: test_16:
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// Dis: li 3, -32760
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