# REQUIRES: loongarch # RUN: echo '.globl bar, weak; .type bar,@function; .type weak,@function; bar: weak:' > %t1.s # RUN: llvm-mc --filetype=obj --triple=loongarch32 %t1.s -o %t1.32.o # RUN: ld.lld -shared %t1.32.o -soname=t1.32.so -o %t1.32.so # RUN: llvm-mc --filetype=obj --triple=loongarch32 %s -o %t.32.o # RUN: ld.lld %t.32.o %t1.32.so -z separate-code -o %t.32 # RUN: llvm-readelf -S -s %t.32 | FileCheck --check-prefixes=SEC,NM %s # RUN: llvm-readobj -r %t.32 | FileCheck --check-prefix=RELOC32 %s # RUN: llvm-readelf -x .got.plt %t.32 | FileCheck --check-prefix=GOTPLT32 %s # RUN: llvm-objdump -d --no-show-raw-insn %t.32 | FileCheck --check-prefixes=DIS,DIS32 %s # RUN: llvm-mc --filetype=obj --triple=loongarch64 %t1.s -o %t1.64.o # RUN: ld.lld -shared %t1.64.o -soname=t1.64.so -o %t1.64.so # RUN: llvm-mc --filetype=obj --triple=loongarch64 %s -o %t.64.o # RUN: ld.lld %t.64.o %t1.64.so -z separate-code -o %t.64 # RUN: llvm-readelf -S -s %t.64 | FileCheck --check-prefixes=SEC,NM %s # RUN: llvm-readobj -r %t.64 | FileCheck --check-prefix=RELOC64 %s # RUN: llvm-readelf -x .got.plt %t.64 | FileCheck --check-prefix=GOTPLT64 %s # RUN: llvm-objdump -d --no-show-raw-insn %t.64 | FileCheck --check-prefixes=DIS,DIS64 %s # SEC: .plt PROGBITS {{0*}}00020020 ## A canonical PLT has a non-zero st_value. bar and weak are called but their ## addresses are not taken, so a canonical PLT is not necessary. # NM: {{0*}}00000000 0 FUNC GLOBAL DEFAULT UND bar # NM: {{0*}}00000000 0 FUNC WEAK DEFAULT UND weak ## The .got.plt slots relocated by .rela.plt point to .plt ## This is required by glibc. # RELOC32: .rela.plt { # RELOC32-NEXT: 0x40070 R_LARCH_JUMP_SLOT bar 0x0 # RELOC32-NEXT: 0x40074 R_LARCH_JUMP_SLOT weak 0x0 # RELOC32-NEXT: } # GOTPLT32: section '.got.plt' # GOTPLT32-NEXT: 0x00040068 00000000 00000000 20000200 20000200 # RELOC64: .rela.plt { # RELOC64-NEXT: 0x400E0 R_LARCH_JUMP_SLOT bar 0x0 # RELOC64-NEXT: 0x400E8 R_LARCH_JUMP_SLOT weak 0x0 # RELOC64-NEXT: } # GOTPLT64: section '.got.plt' # GOTPLT64-NEXT: 0x000400d0 00000000 00000000 00000000 00000000 # GOTPLT64-NEXT: 0x000400e0 20000200 00000000 20000200 00000000 # DIS: <_start>: ## Direct call ## foo - . = 0x20010-0x20000 = 16 # DIS-NEXT: 20000: bl 16 ## bar@plt - . = 0x20040-0x20004 = 60 # DIS-NEXT: 20004: bl 60 ## bar@plt - . = 0x20040-0x20008 = 56 # DIS-NEXT: 20008: bl 56 ## weak@plt - . = 0x20050-0x2000c = 68 # DIS-NEXT: 2000c: bl 68 # DIS: : # DIS-NEXT: 20010: # DIS: Disassembly of section .plt: # DIS: <.plt>: ## 32-bit: .got.plt - .plt = 0x40068 - 0x20020 = 4096*32+72 # DIS32-NEXT: pcaddu12i $t2, 32 # DIS32-NEXT: sub.w $t1, $t1, $t3 # DIS32-NEXT: ld.w $t3, $t2, 72 # DIS32-NEXT: addi.w $t1, $t1, -44 # DIS32-NEXT: addi.w $t0, $t2, 72 # DIS32-NEXT: srli.w $t1, $t1, 2 # DIS32-NEXT: ld.w $t0, $t0, 4 # DIS32-NEXT: jr $t3 ## 64-bit: .got.plt - .plt = 0x400d0 - 0x20020 = 4096*32+176 # DIS64-NEXT: pcaddu12i $t2, 32 # DIS64-NEXT: sub.d $t1, $t1, $t3 # DIS64-NEXT: ld.d $t3, $t2, 176 # DIS64-NEXT: addi.d $t1, $t1, -44 # DIS64-NEXT: addi.d $t0, $t2, 176 # DIS64-NEXT: srli.d $t1, $t1, 1 # DIS64-NEXT: ld.d $t0, $t0, 8 # DIS64-NEXT: jr $t3 ## 32-bit: &.got.plt[bar]-. = 0x40070-0x20040 = 4096*32+48 ## 64-bit: &.got.plt[bar]-. = 0x400e0-0x20040 = 4096*32+160 # DIS: 20040: pcaddu12i $t3, 32 # DIS32-NEXT: ld.w $t3, $t3, 48 # DIS64-NEXT: ld.d $t3, $t3, 160 # DIS-NEXT: jirl $t1, $t3, 0 # DIS-NEXT: nop ## 32-bit: &.got.plt[weak]-. = 0x40074-0x20050 = 4096*32+36 ## 64-bit: &.got.plt[weak]-. = 0x400e8-0x20050 = 4096*32+152 # DIS: 20050: pcaddu12i $t3, 32 # DIS32-NEXT: ld.w $t3, $t3, 36 # DIS64-NEXT: ld.d $t3, $t3, 152 # DIS-NEXT: jirl $t1, $t3, 0 # DIS-NEXT: nop .global _start, foo, bar .weak weak _start: bl foo bl bar bl %plt(bar) bl weak ## foo is local and non-preemptible, no PLT is generated. foo: ret