Mercurial > hg > CbC > CbC_llvm
view lld/test/ELF/ppc32-call-stub-nopic.s @ 192:d7606dcf6fce
Added tag llvm10 for changeset 0572611fdcc8
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 14 Dec 2020 18:01:34 +0900 |
parents | 0572611fdcc8 |
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# REQUIRES: ppc # RUN: llvm-mc -filetype=obj -triple=powerpc %s -o %t.o # RUN: echo '.globl f, g, h; f: g: h:' | llvm-mc -filetype=obj -triple=powerpc - -o %t1.o # RUN: ld.lld -shared %t1.o -soname t1.so -o %t1.so ## Check we can create PLT entries for -fno-PIE executable. # RUN: ld.lld %t.o %t1.so -o %t # RUN: llvm-readobj -r -d %t | FileCheck --check-prefix=RELOC %s # RUN: llvm-readelf -S %t | FileCheck --check-prefix=SEC %s # RUN: llvm-readelf -x .plt %t | FileCheck --check-prefix=HEX %s # RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s # SEC: .got PROGBITS 100202b8 # RELOC: PPC_GOT 0x100202B8 # RELOC: .rela.plt { # RELOC-NEXT: 0x100302C4 R_PPC_JMP_SLOT f 0x0 # RELOC-NEXT: 0x100302C8 R_PPC_JMP_SLOT g 0x0 # RELOC-NEXT: } ## .got2+0x8000-0x10004 = 0x30000+0x8000-0x10004 = 65536*2+32764 # CHECK-LABEL: <_start>: # CHECK-NEXT: bl 0x100101d0 # CHECK-NEXT: bl 0x100101d0 # CHECK-NEXT: bl 0x100101e0 # CHECK-NEXT: bl 0x100101e0 # CHECK-EMPTY: ## -fno-PIC call stubs of f and g. ## .plt[0] = 0x100302c4 = 65536*4099+708 ## .plt[1] = 0x100302c8 = 65536*4099+712 # CHECK-NEXT: <00000000.plt_call32.f>: # CHECK-NEXT: lis 11, 4099 # CHECK-NEXT: lwz 11, 708(11) # CHECK-NEXT: mtctr 11 # CHECK-NEXT: bctr # CHECK-EMPTY: # CHECK-NEXT: <00000000.plt_call32.g>: # CHECK-NEXT: lis 11, 4099 # CHECK-NEXT: lwz 11, 712(11) # CHECK-NEXT: mtctr 11 # CHECK-NEXT: bctr # CHECK-EMPTY: ## In Secure PLT ABI, .plt stores function pointers to first instructions of .glink # HEX: 0x100302c4 10010200 10010204 ## These instructions are referenced by .plt entries. # CHECK: 10010200 <.glink>: # CHECK-NEXT: b 0x10010208 # CHECK-NEXT: b 0x10010208 ## PLTresolve ## Operands of lis & lwz: .got+4 = 0x10020070+4 = 65536*4098+700 ## Operands of addis & addi: -.glink = -0x10010200 = 65536*-4097-512 # CHECK-NEXT: lis 12, 4098 # CHECK-NEXT: addis 11, 11, -4097 # CHECK-NEXT: lwz 0, 700(12) # CHECK-NEXT: addi 11, 11, -512 # CHECK-NEXT: mtctr 0 # CHECK-NEXT: add 0, 11, 11 # CHECK-NEXT: lwz 12, 704(12) # CHECK-NEXT: add 11, 0, 11 # CHECK-NEXT: bctr ## glibc crti.o references _GLOBAL_OFFSET_TABLE_. .section .init bcl 20, 31, .+4 .L: mflr 30 addis 30, 30, _GLOBAL_OFFSET_TABLE_-.L@ha addi 30, 30, _GLOBAL_OFFSET_TABLE_-.L@l .text .globl _start _start: bl f bl f bl g bl g