derek.holloway
7502bf64a4
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68 lines
2.5 KiB
ArmAsm
68 lines
2.5 KiB
ArmAsm
// This test checks that BOLT creates entry points for addresses
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// referenced by dynamic relocations.
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// The test also checks that BOLT can map addresses inside functions.
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// Checks for error and entry points.
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# RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown %s -o %t.o
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# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
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# RUN: llvm-bolt %t.exe -o %t.bolt 2>&1 | FileCheck %s
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# RUN: llvm-bolt %t.exe -o %t.bolt --print-cfg | FileCheck --check-prefix=CHECK-ENTRIES %s
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// Checks for dynamic relocations.
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# RUN: llvm-readelf -dr %t.bolt > %t.out.txt
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# RUN: llvm-objdump -j .rela.dyn -d %t.bolt >> %t.out.txt
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# RUN: FileCheck --check-prefix=CHECK-RELOCS %s --input-file=%t.out.txt
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// Before bolt could handle mapping addresses within moved functions, it
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// would bail out with an error of the form:
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// BOLT-ERROR: unable to get new address corresponding to input address 0x10390 in function main. Consider adding this function to --skip-funcs=...
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// These addresses arise if computed GOTO is in use.
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// Check that bolt does not emit any error.
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# CHECK-NOT: BOLT-ERROR
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// Check that there are dynamic relocations.
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# CHECK-RELOCS: Dynamic section at offset {{.*}} contains {{.*}} entries:
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# CHECK-RELOCS: Relocation section '.rela.dyn' at offset {{.*}} contains {{.*}} entries
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// Check that dynamic relocations were updated
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# CHECK-RELOCS: [[#%x,OFF:]] [[#%x,INFO_DYN:]] R_AARCH64_RELATIVE [[#%x,ADDR:]]
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# CHECK-RELOCS-NEXT: [[#OFF + 8]] {{0*}}[[#INFO_DYN]] R_AARCH64_RELATIVE [[#ADDR + 8]]
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# CHECK-RELOCS: [[#ADDR]] <unknown>
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# CHECK-RELOCS: [[#ADDR + 8]] <unknown>
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// Check that BOLT registers extra entry points for dynamic relocations.
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# CHECK-ENTRIES: Binary Function "main" after building cfg {
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# CHECK-ENTRIES: IsMultiEntry: 1
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# CHECK-ENTRIES: .Ltmp0 {{.*}}
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# CHECK-ENTRIES-NEXT: Secondary Entry Point: {{.*}}
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# CHECK-ENTRIES: .Ltmp1 {{.*}}
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# CHECK-ENTRIES-NEXT: Secondary Entry Point: {{.*}}
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.globl main
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.p2align 2
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.type main,@function
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main:
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.cfi_startproc
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adrp x8, .L__const.main.ptrs+8
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add x8, x8, :lo12:.L__const.main.ptrs+8
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ldr x9, [x8], #8
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br x9
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.Label0: // Block address taken
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ldr x9, [x8], #8
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br x9
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.Label1: // Block address taken
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mov w0, #42
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ret
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.Lfunc_end0:
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.size main, .Lfunc_end0-main
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.cfi_endproc
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.type .L__const.main.ptrs,@object
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.section .data.rel.ro,"aw",@progbits
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.p2align 3, 0x0
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.L__const.main.ptrs:
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.xword .Label0
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.xword .Label1
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