forked from OSchip/llvm-project
64 lines
2.0 KiB
ArmAsm
64 lines
2.0 KiB
ArmAsm
// RUN: llvm-mc %s -triple=armv7-unknown-linux-gnueabi -filetype=obj -o %t.o
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// RUN: echo "SECTIONS { \
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// RUN: .text : { *(.text) } \
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// RUN: .prel.test : { *(.ARM.exidx) } \
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// RUN: .prel.test.TEST1 : { *(.ARM.exidx.TEST1) } \
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// RUN: .TEST1 : { *(.TEST1) } } " > %t.script
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// RUN: ld.lld --script %t.script %t.o -o %t
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// RUN: llvm-readobj -s -sd %t | FileCheck --check-prefix=CHECK %s
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// REQUIRES: arm
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// The R_ARM_PREL31 relocation is used in by the .ARM.exidx exception tables
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// bit31 of the place denotes whether the field is an inline table entry
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// (bit31=1) or relocation (bit31=0)
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// The linker must preserve the value of bit31
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// This test case is adapted from llvm/test/MC/ARM/eh-compact-pr0.s
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// We use a linker script to place the .ARM.exidx sections in between
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// the code sections so that we can test positive and negative offsets
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.syntax unified
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.section .TEST1, "ax",%progbits
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.globl _start
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.align 2
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.type _start,%function
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_start:
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.fnstart
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.save {r11, lr}
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push {r11, lr}
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.setfp r11, sp
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mov r11, sp
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pop {r11, lr}
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mov pc, lr
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.fnend
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.section .text, "ax",%progbits
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// The generated .ARM.exidx section will refer to the personality
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// routine __aeabi_unwind_cpp_pr0. Provide a dummy implementation
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// to stop an undefined symbol error
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.globl __aeabi_unwind_cpp_pr0
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.align 2
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.type __aeabi_unwind_cpp_pr0,%function
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__aeabi_unwind_cpp_pr0:
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.fnstart
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bx lr
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.fnend
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// The expected value of the exception table is
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// Word0 0 in bit 31, -4 encoded in 31-bit signed offset
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// Word1 Inline table entry EHT Inline Personality Routine #0
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// CHECK: Name: .prel.test
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// CHECK: SectionData (
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// CHECK: 0000: FCFFFF7F B0B0B080
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// CHECK: )
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// The expected value of the exception table is
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// Word0 0 in bit 31, +8 encoded in 31-bit signed offset
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// Word1 Inline table entry EHT Inline Personality Routine #0
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// set vsp = r11
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// pop r11, r14
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// CHECK: Name: .prel.test.TEST1
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// CHECK: SectionData (
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// CHECK: 0000: 08000000 80849B80
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// CHECK: )
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