forked from OSchip/llvm-project
156 lines
4.5 KiB
ArmAsm
156 lines
4.5 KiB
ArmAsm
# REQUIRES: ppc
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# RUN: llvm-mc -filetype=obj -triple=powerpc %s -o %t.o
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# RUN: echo '.globl f, g, h; f: g: h:' | llvm-mc -filetype=obj -triple=powerpc - -o %t1.o
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# RUN: ld.lld -shared %t1.o -soname t1.so -o %t1.so
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# RUN: echo 'bl f+0x8000@plt' | llvm-mc -filetype=obj -triple=powerpc - -o %t2.o
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## Check we can create PLT entries for -fPIE or -fpie executable.
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# RUN: ld.lld -pie %t.o %t1.so %t2.o -o %t
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# RUN: llvm-readobj -r %t | FileCheck --check-prefix=RELOC %s
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# RUN: llvm-readobj -d %t | FileCheck --check-prefix=DYN %s
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# RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC %s
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# RUN: llvm-readelf -x .plt %t | FileCheck --check-prefix=HEX %s
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# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefixes=CHECK,PIE %s
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## Check we can create PLT entries for -fPIC or -fpic DSO.
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# RUN: ld.lld -shared %t.o %t1.so %t2.o -o %t
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# RUN: llvm-readobj -r %t | FileCheck --check-prefix=RELOC %s
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# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefixes=CHECK,SHARED %s
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# RELOC: .rela.dyn {
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# RELOC-NEXT: R_PPC_ADDR32 f 0x0
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# RELOC-NEXT: R_PPC_ADDR32 g 0x0
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# RELOC-NEXT: R_PPC_ADDR32 h 0x0
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# RELOC-NEXT: }
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# RELOC-NEXT: .rela.plt {
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# RELOC-NEXT: R_PPC_JMP_SLOT f 0x0
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# RELOC-NEXT: R_PPC_JMP_SLOT g 0x0
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# RELOC-NEXT: R_PPC_JMP_SLOT h 0x0
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# RELOC-NEXT: }
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# SEC: .got PROGBITS 00020374
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# DYN: PPC_GOT 0x20374
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## .got2+0x8000-0x10004 = 0x30000+0x8000-0x10004 = 65536*2+32764
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# CHECK-LABEL: _start:
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# CHECK-NEXT: bcl 20, 31, .+4
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# PIE-NEXT: 10210: mflr 30
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# PIE-NEXT: addis 30, 30, 3
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# PIE-NEXT: addi 30, 30, -32400
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# SHARED-NEXT: 10230: mflr 30
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# SHARED-NEXT: addis 30, 30, 3
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# SHARED-NEXT: addi 30, 30, -32408
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## Two bl 00008000.got2.plt_pic32.f
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# CHECK-NEXT: bl .+40
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# CHECK-NEXT: bl .+36
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## Two bl 00008000.got2.plt_pic32.g
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# CHECK-NEXT: bl .+48
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# CHECK-NEXT: bl .+44
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## Two bl 00008000.got2.plt_pic32.h
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# CHECK-NEXT: bl .+56
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# CHECK-NEXT: bl .+52
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# CHECK-NEXT: addis 30, 30, {{.*}}
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# CHECK-NEXT: addi 30, 30, {{.*}}
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## bl 00008000.plt_pic32.f
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# CHECK-NEXT: bl .+56
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## bl 00008000.plt_pic32.f
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# CHECK-NEXT: bl .+68
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# CHECK-EMPTY:
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## -fPIC call stubs of f and g.
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# CHECK-NEXT: 00008000.got2.plt_pic32.f:
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# CHECK-NEXT: lwz 11, 32760(30)
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# CHECK-NEXT: mtctr 11
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# CHECK-NEXT: bctr
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# CHECK-NEXT: nop
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# CHECK-EMPTY:
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# CHECK-NEXT: 00008000.got2.plt_pic32.g:
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# CHECK-NEXT: lwz 11, 32764(30)
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# CHECK-NEXT: mtctr 11
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# CHECK-NEXT: bctr
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# CHECK-NEXT: nop
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# CHECK-EMPTY:
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## The -fPIC call stub of h needs two instructions addis+lwz to represent the offset 65536*1-32768.
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# CHECK-NEXT: 00008000.got2.plt_pic32.h:
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# CHECK-NEXT: addis 11, 30, 1
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# CHECK-NEXT: lwz 11, -32768(11)
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# CHECK-NEXT: mtctr 11
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# CHECK-NEXT: bctr
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# CHECK-EMPTY:
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## -fpic call stub of f.
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# CHECK-NEXT: 00000000.plt_pic32.f:
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# CHECK-NEXT: addis 11, 30, 2
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# CHECK-NEXT: lwz 11, 4(11)
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# CHECK-NEXT: mtctr 11
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# CHECK-NEXT: bctr
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# CHECK-EMPTY:
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## Another -fPIC call stub of f from another object file %t2.o
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## .got2 may have different addresses in different object files,
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## so the call stub cannot be shared.
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# CHECK-NEXT: 00008000.got2.plt_pic32.f:
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## In Secure PLT ABI, .plt stores function pointers to first instructions of .glink
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# HEX: 0x00040378 000102a0 000102a4 000102a8
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## These instructions are referenced by .plt entries.
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# PIE: 000102a0 .glink:
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# SHARED: 000102c0 .glink:
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# CHECK-NEXT: b .+12
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# CHECK-NEXT: b .+8
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# CHECK-NEXT: b .+4
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## PLTresolve
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## Operand of addi: 0x100a8-.glink = 24
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# CHECK-NEXT: addis 11, 11, 0
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# CHECK-NEXT: mflr 0
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# CHECK-NEXT: bcl 20, 31, .+4
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# PIE-NEXT: 102b8: addi 11, 11, 24
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# SHARED-NEXT: 102d8: addi 11, 11, 24
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# CHECK-NEXT: mflr 12
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# CHECK-NEXT: mtlr 0
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# CHECK-NEXT: subf 11, 12, 11
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## Operand of lwz in -pie mode: &.got[1] - 0x100a8 = 0x20088+4 - 0x100a8 = 65536*1-28
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# CHECK-NEXT: addis 12, 12, 1
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# PIE-NEXT: lwz 0, 192(12)
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# SHARED-NEXT: lwz 0, 184(12)
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# PIE-NEXT: lwz 12, 196(12)
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# SHARED-NEXT: lwz 12, 188(12)
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# CHECK-NEXT: mtctr 0
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# CHECK-NEXT: add 0, 11, 11
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# CHECK-NEXT: add 11, 0, 11
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# CHECK-NEXT: bctr
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.section .got2,"aw"
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.space 65516
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.long f
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.long g
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.long h
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.text
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.globl _start
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_start:
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bcl 20,31,.L
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.L:
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mflr 30
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addis 30, 30, .got2+0x8000-.L@ha
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addi 30, 30, .got2+0x8000-.L@l
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bl f+0x8000@plt
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bl f+0x8000@plt
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bl g+0x8000@plt
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bl g+0x8000@plt
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bl h+0x8000@plt
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bl h+0x8000@plt
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## An addend of 0 indicates r30 is stored in _GLOBAL_OFFSET_TABLE_.
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## The existing thunk is incompatible, thus it cannot be reused.
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addis 30, 30, _GLOBAL_OFFSET_TABLE_-.L@ha
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addi 30, 30, _GLOBAL_OFFSET_TABLE_-.L@l
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bl f@plt
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