forked from OSchip/llvm-project
105 lines
3.6 KiB
ArmAsm
105 lines
3.6 KiB
ArmAsm
# REQUIRES: riscv
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# RUN: echo '.globl bar, weak; .type bar,@function; .type weak,@function; bar: weak:' > %t1.s
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# RUN: llvm-mc -filetype=obj -triple=riscv32 %t1.s -o %t1.32.o
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# RUN: ld.lld -shared %t1.32.o -soname=t1.32.so -o %t1.32.so
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# RUN: llvm-mc -filetype=obj -triple=riscv32 %s -o %t.32.o
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# RUN: ld.lld %t.32.o %t1.32.so -z separate-code -o %t.32
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# RUN: llvm-readelf -S -s %t.32 | FileCheck --check-prefixes=SEC,NM %s
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# RUN: llvm-readobj -r %t.32 | FileCheck --check-prefix=RELOC32 %s
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# RUN: llvm-readelf -x .got.plt %t.32 | FileCheck --check-prefix=GOTPLT32 %s
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# RUN: llvm-objdump -d --no-show-raw-insn %t.32 | FileCheck --check-prefixes=DIS,DIS32 %s
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# RUN: llvm-mc -filetype=obj -triple=riscv64 %t1.s -o %t1.64.o
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# RUN: ld.lld -shared %t1.64.o -soname=t1.64.so -o %t1.64.so
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# RUN: llvm-mc -filetype=obj -triple=riscv64 %s -o %t.64.o
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# RUN: ld.lld %t.64.o %t1.64.so -z separate-code -o %t.64
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# RUN: llvm-readelf -S -s %t.64 | FileCheck --check-prefixes=SEC,NM %s
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# RUN: llvm-readobj -r %t.64 | FileCheck --check-prefix=RELOC64 %s
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# RUN: llvm-readelf -x .got.plt %t.64 | FileCheck --check-prefix=GOTPLT64 %s
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# RUN: llvm-objdump -d --no-show-raw-insn %t.64 | FileCheck --check-prefixes=DIS,DIS64 %s
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# SEC: .plt PROGBITS {{0*}}00011030
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## A canonical PLT has a non-zero st_value. bar and weak are called but their
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## addresses are not taken, so a canonical PLT is not necessary.
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# NM: {{0*}}00000000 0 FUNC GLOBAL DEFAULT UND bar
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# NM: {{0*}}00000000 0 FUNC WEAK DEFAULT UND weak
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## The .got.plt slots relocated by .rela.plt point to .plt
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## This is required by glibc.
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# RELOC32: .rela.plt {
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# RELOC32-NEXT: 0x13070 R_RISCV_JUMP_SLOT bar 0x0
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# RELOC32-NEXT: 0x13074 R_RISCV_JUMP_SLOT weak 0x0
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# RELOC32-NEXT: }
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# GOTPLT32: section '.got.plt'
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# GOTPLT32-NEXT: 0x00013068 00000000 00000000 30100100 30100100
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# RELOC64: .rela.plt {
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# RELOC64-NEXT: 0x130E0 R_RISCV_JUMP_SLOT bar 0x0
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# RELOC64-NEXT: 0x130E8 R_RISCV_JUMP_SLOT weak 0x0
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# RELOC64-NEXT: }
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# GOTPLT64: section '.got.plt'
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# GOTPLT64-NEXT: 0x000130d0 00000000 00000000 00000000 00000000
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# GOTPLT64-NEXT: 0x000130e0 30100100 00000000 30100100 00000000
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# DIS: <_start>:
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## Direct call
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## foo - . = 0x11020-0x11000 = 32
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# DIS-NEXT: 11000: auipc ra, 0
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# DIS-NEXT: jalr 32(ra)
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## bar@plt - . = 0x11050-0x11008 = 72
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# DIS-NEXT: 11008: auipc ra, 0
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# DIS-NEXT: jalr 72(ra)
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## bar@plt - . = 0x11050-0x11010 = 64
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# DIS-NEXT: 11010: auipc ra, 0
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# DIS-NEXT: jalr 64(ra)
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## weak@plt - . = 0x11060-0x11018 = 72
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# DIS-NEXT: 11018: auipc ra, 0
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# DIS-NEXT: jalr 72(ra)
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# DIS: <foo>:
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# DIS-NEXT: 11020:
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# DIS: Disassembly of section .plt:
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# DIS: <.plt>:
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# DIS-NEXT: auipc t2, 2
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# DIS-NEXT: sub t1, t1, t3
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## .got.plt - .plt = 0x13068 - 0x11030 = 4096*2+56
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# DIS32-NEXT: lw t3, 56(t2)
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# DIS64-NEXT: ld t3, 160(t2)
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# DIS-NEXT: addi t1, t1, -44
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# DIS32-NEXT: addi t0, t2, 56
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# DIS64-NEXT: addi t0, t2, 160
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# DIS32-NEXT: srli t1, t1, 2
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# DIS64-NEXT: srli t1, t1, 1
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# DIS32-NEXT: lw t0, 4(t0)
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# DIS64-NEXT: ld t0, 8(t0)
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# DIS-NEXT: jr t3
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## 32-bit: &.got.plt[bar]-. = 0x13070-0x11050 = 4096*2+32
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# DIS: 11050: auipc t3, 2
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# DIS32-NEXT: lw t3, 32(t3)
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# DIS64-NEXT: ld t3, 144(t3)
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# DIS-NEXT: jalr t1, t3
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# DIS-NEXT: nop
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## 32-bit: &.got.plt[weak]-. = 0x13074-0x11060 = 4096*2+20
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# DIS: 11060: auipc t3, 2
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# DIS32-NEXT: lw t3, 20(t3)
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# DIS64-NEXT: ld t3, 136(t3)
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# DIS-NEXT: jalr t1, t3
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# DIS-NEXT: nop
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.global _start, foo, bar
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.weak weak
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_start:
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call foo
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call bar
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call bar@plt
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call weak
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## foo is local and non-preemptale, no PLT is generated.
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foo:
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ret
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