| 1 | // This test checks that IFUNC trampoline is properly recognised by BOLT |
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| 2 | |
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| 3 | // With -O0 indirect call is performed on IPLT trampoline. IPLT trampoline |
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| 4 | // has IFUNC symbol. |
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| 5 | // RUN: %clang %cflags -nostdlib -O0 -no-pie %s -fuse-ld=lld \ |
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| 6 | // RUN: -o %t.O0.exe -Wl,-q |
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| 7 | // RUN: llvm-bolt %t.O0.exe -o %t.O0.bolt.exe \ |
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| 8 | // RUN: --print-disasm --print-only=_start | \ |
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| 9 | // RUN: FileCheck --check-prefix=CHECK %s |
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| 10 | // RUN: llvm-readelf -aW %t.O0.bolt.exe | \ |
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| 11 | // RUN: FileCheck --check-prefix=REL_CHECK %s |
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| 12 | |
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| 13 | // Non-pie static executable doesn't generate PT_DYNAMIC, check relocation |
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| 14 | // is readed successfully and IPLT trampoline has been identified by bolt. |
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| 15 | // RUN: %clang %cflags -nostdlib -O3 %s -fuse-ld=lld -no-pie \ |
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| 16 | // RUN: -o %t.O3_nopie.exe -Wl,-q |
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| 17 | // RUN: llvm-readelf -l %t.O3_nopie.exe | \ |
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| 18 | // RUN: FileCheck --check-prefix=NON_DYN_CHECK %s |
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| 19 | // RUN: llvm-bolt %t.O3_nopie.exe -o %t.O3_nopie.bolt.exe \ |
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| 20 | // RUN: --print-disasm --print-only=_start | \ |
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| 21 | // RUN: FileCheck --check-prefix=CHECK %s |
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| 22 | // RUN: llvm-readelf -aW %t.O3_nopie.bolt.exe | \ |
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| 23 | // RUN: FileCheck --check-prefix=REL_CHECK %s |
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| 24 | |
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| 25 | // With -O3 direct call is performed on IPLT trampoline. IPLT trampoline |
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| 26 | // doesn't have associated symbol. The ifunc symbol has the same address as |
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| 27 | // IFUNC resolver function. |
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| 28 | // RUN: %clang %cflags -nostdlib -O3 %s -fuse-ld=lld -fPIC -pie \ |
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| 29 | // RUN: -o %t.O3_pie.exe -Wl,-q |
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| 30 | // RUN: llvm-bolt %t.O3_pie.exe -o %t.O3_pie.bolt.exe \ |
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| 31 | // RUN: --print-disasm --print-only=_start | \ |
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| 32 | // RUN: FileCheck --check-prefix=CHECK %s |
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| 33 | // RUN: llvm-readelf -aW %t.O3_pie.bolt.exe | \ |
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| 34 | // RUN: FileCheck --check-prefix=REL_CHECK %s |
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| 35 | |
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| 36 | // Check that IPLT trampoline located in .plt section are normally handled by |
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| 37 | // BOLT. The gnu-ld linker doesn't use separate .iplt section. |
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| 38 | // RUN: %clang %cflags -nostdlib -O3 %s -fuse-ld=lld -fPIC -pie \ |
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| 39 | // RUN: -T %p/Inputs/iplt.ld -o %t.iplt_O3_pie.exe -Wl,-q |
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| 40 | // RUN: llvm-bolt %t.iplt_O3_pie.exe -o %t.iplt_O3_pie.bolt.exe \ |
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| 41 | // RUN: --print-disasm --print-only=_start | \ |
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| 42 | // RUN: FileCheck --check-prefix=CHECK %s |
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| 43 | // RUN: llvm-readelf -aW %t.iplt_O3_pie.bolt.exe | \ |
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| 44 | // RUN: FileCheck --check-prefix=REL_CHECK %s |
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| 45 | |
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| 46 | // NON_DYN_CHECK-NOT: DYNAMIC |
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| 47 | |
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| 48 | // CHECK: {{(bl? "(resolver_foo|ifoo).*@PLT"|adr x[0-9]+, ifoo)}} |
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| 49 | |
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| 50 | // REL_CHECK: R_AARCH64_IRELATIVE [[#%x,REL_SYMB_ADDR:]] |
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| 51 | // REL_CHECK: [[#REL_SYMB_ADDR]] {{.*}} FUNC {{.*}} resolver_foo |
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| 52 | |
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| 53 | static void foo() {} |
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| 54 | static void bar() {} |
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| 55 | |
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| 56 | extern int use_foo; |
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| 57 | |
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| 58 | static void *resolver_foo(void) { return use_foo ? foo : bar; } |
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| 59 | |
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| 60 | __attribute__((ifunc("resolver_foo" ))) void ifoo(); |
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| 61 | |
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| 62 | void _start() { ifoo(); } |
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| 63 | |
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