| # REQUIRES: aarch64 |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %s -o %t.o |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/aarch64-pac1.s -o %t1.o |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/aarch64-func3.s -o %t2.o |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/aarch64-func3-pac.s -o %t3.o |
| # RUN: llvm-mc -filetype=obj -triple=aarch64-linux-gnu %p/Inputs/aarch64-func2.s -o %tno.o |
| |
| ## We do not add PAC support when the inputs don't have the .note.gnu.property |
| ## field. |
| |
| # RUN: ld.lld %tno.o %t3.o --shared -o %tno.so |
| # RUN: llvm-objdump -d -mattr=+v8.3a --no-show-raw-insn %tno.so | FileCheck --check-prefix=NOPAC %s |
| # RUN: llvm-readelf -x .got.plt %tno.so | FileCheck --check-prefix SOGOTPLT %s |
| # RUN: llvm-readelf --dynamic-table %tno.so | FileCheck --check-prefix NOPACDYN %s |
| |
| # NOPAC: 0000000000010000 func2: |
| # NOPAC-NEXT: 10000: bl #48 <func3@plt> |
| # NOPAC-NEXT: 10004: ret |
| # NOPAC: Disassembly of section .plt: |
| # NOPAC: 0000000000010010 .plt: |
| # NOPAC-NEXT: 10010: stp x16, x30, [sp, #-16]! |
| # NOPAC-NEXT: 10014: adrp x16, #131072 |
| # NOPAC-NEXT: 10018: ldr x17, [x16, #16] |
| # NOPAC-NEXT: 1001c: add x16, x16, #16 |
| # NOPAC-NEXT: 10020: br x17 |
| # NOPAC-NEXT: 10024: nop |
| # NOPAC-NEXT: 10028: nop |
| # NOPAC-NEXT: 1002c: nop |
| # NOPAC: 0000000000010030 func3@plt: |
| # NOPAC-NEXT: 10030: adrp x16, #131072 |
| # NOPAC-NEXT: 10034: ldr x17, [x16, #24] |
| # NOPAC-NEXT: 10038: add x16, x16, #24 |
| # NOPAC-NEXT: 1003c: br x17 |
| |
| # NOPACDYN-NOT: 0x0000000070000001 (AARCH64_BTI_PLT) |
| # NOPACDYN-NOT: 0x0000000070000003 (AARCH64_PAC_PLT) |
| |
| # RUN: ld.lld %t1.o %t3.o --shared -o %t.so |
| # RUN: llvm-readelf -n %t.so | FileCheck --check-prefix PACPROP %s |
| # RUN: llvm-objdump -d -mattr=+v8.3a --no-show-raw-insn %t.so | FileCheck --check-prefix PACSO %s |
| # RUN: llvm-readelf -x .got.plt %t.so | FileCheck --check-prefix SOGOTPLT %s |
| # RUN: llvm-readelf --dynamic-table %t.so | FileCheck --check-prefix PACDYN %s |
| |
| ## PAC has no effect on PLT[0], for PLT[N] autia1716 is used to authenticate |
| ## the address in x17 (context in x16) before branching to it. The dynamic |
| ## loader is responsible for calling pacia1716 on the entry. |
| # PACSO: 0000000000010000 func2: |
| # PACSO-NEXT: 10000: bl #48 <func3@plt> |
| # PACSO-NEXT: 10004: ret |
| # PACSO: Disassembly of section .plt: |
| # PACSO: 0000000000010010 .plt: |
| # PACSO-NEXT: 10010: stp x16, x30, [sp, #-16]! |
| # PACSO-NEXT: 10014: adrp x16, #131072 |
| # PACSO-NEXT: 10018: ldr x17, [x16, #16] |
| # PACSO-NEXT: 1001c: add x16, x16, #16 |
| # PACSO-NEXT: 10020: br x17 |
| # PACSO-NEXT: 10024: nop |
| # PACSO-NEXT: 10028: nop |
| # PACSO-NEXT: 1002c: nop |
| # PACSO: 0000000000010030 func3@plt: |
| # PACSO-NEXT: 10030: adrp x16, #131072 |
| # PACSO-NEXT: 10034: ldr x17, [x16, #24] |
| # PACSO-NEXT: 10038: add x16, x16, #24 |
| # PACSO-NEXT: 1003c: autia1716 |
| # PACSO-NEXT: 10040: br x17 |
| # PACSO-NEXT: 10044: nop |
| |
| # The .got.plt should be identical between the PAC and no PAC DSO PLT. |
| # SOGOTPLT: Hex dump of section '.got.plt': |
| # SOGOTPLT-NEXT: 0x00030000 00000000 00000000 00000000 00000000 |
| # SOGOTPLT-NEXT: 0x00030010 00000000 00000000 10000100 00000000 |
| |
| # PACPROP: Properties: aarch64 feature: PAC |
| |
| # PACDYN-NOT: 0x0000000070000001 (AARCH64_BTI_PLT) |
| # PACDYN: 0x0000000070000003 (AARCH64_PAC_PLT) |
| |
| ## Turn on PAC entries with the --pac-plt command line option. There are no |
| ## warnings in this case as the choice to use PAC in PLT entries is orthogonal |
| ## to the choice of using PAC in relocatable objects. The presence of the PAC |
| ## .note.gnu.property is an indication of preference by the relocatable object. |
| |
| # RUN: ld.lld %t.o %t2.o --pac-plt %t.so -o %tpacplt.exe |
| # RUN: llvm-readelf -n %tpacplt.exe | FileCheck --check-prefix=PACPROP %s |
| # RUN: llvm-readelf --dynamic-table %tpacplt.exe | FileCheck --check-prefix PACDYN %s |
| # RUN: llvm-objdump -d -mattr=+v8.3a --no-show-raw-insn %tpacplt.exe | FileCheck --check-prefix PACPLT %s |
| |
| # PACPLT: Disassembly of section .text: |
| # PACPLT: 0000000000210000 func1: |
| # PACPLT-NEXT: 210000: bl #48 <func2@plt> |
| # PACPLT-NEXT: 210004: ret |
| # PACPLT: 0000000000210008 func3: |
| # PACPLT-NEXT: 210008: ret |
| # PACPLT: Disassembly of section .plt: |
| # PACPLT: 0000000000210010 .plt: |
| # PACPLT-NEXT: 210010: stp x16, x30, [sp, #-16]! |
| # PACPLT-NEXT: 210014: adrp x16, #131072 |
| # PACPLT-NEXT: 210018: ldr x17, [x16, #16] |
| # PACPLT-NEXT: 21001c: add x16, x16, #16 |
| # PACPLT-NEXT: 210020: br x17 |
| # PACPLT-NEXT: 210024: nop |
| # PACPLT-NEXT: 210028: nop |
| # PACPLT-NEXT: 21002c: nop |
| # PACPLT: 0000000000210030 func2@plt: |
| # PACPLT-NEXT: 210030: adrp x16, #131072 |
| # PACPLT-NEXT: 210034: ldr x17, [x16, #24] |
| # PACPLT-NEXT: 210038: add x16, x16, #24 |
| # PACPLT-NEXT: 21003c: autia1716 |
| # PACPLT-NEXT: 210040: br x17 |
| # PACPLT-NEXT: 210044: nop |
| |
| |
| .section ".note.gnu.property", "a" |
| .long 4 |
| .long 0x10 |
| .long 0x5 |
| .asciz "GNU" |
| |
| .long 0xc0000000 // GNU_PROPERTY_AARCH64_FEATURE_1_AND |
| .long 4 |
| .long 2 // GNU_PROPERTY_AARCH64_FEATURE_1_PAC |
| .long 0 |
| |
| .text |
| .globl _start |
| .type func1,%function |
| func1: |
| bl func2 |
| ret |
