forked from OSchip/llvm-project
87 lines
3.6 KiB
ArmAsm
87 lines
3.6 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
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// RUN: echo "SECTIONS {" > %t.script
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// RUN: echo " .text_low 0x130 : { *(.text) }" >> %t.script
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// RUN: echo " .text_high 0xf0000000 : AT(0x1000) { *(.text_high) }" >> %t.script
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// RUN: echo " } " >> %t.script
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// RUN: ld.lld --script %t.script --pie --static %t -o %t2 2>&1
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// RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi %t2 | FileCheck %s
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t3
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// RUN: ld.lld --script %t.script --pie %t3 -o %t4 2>&1
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// RUN: llvm-objdump -d -triple=thumbv7a-none-linux-gnueabi %t4 | FileCheck -check-prefix=CHECK-THUMB %s
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// Check that we can create Arm and Thumb v7a Position Independent Thunks that
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// can span the address space without triggering overflow errors. We use an
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// AT(0x1000) for .text_high to avoid creating an almost 4Gb size file.
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.syntax unified
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.text
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.global _start
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.type _start, %function
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_start:
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bl high
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bx lr
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.section .text_high, "ax", %progbits
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.global high
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.type high, %function
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high:
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bl _start
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bx lr
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// ARMv7a instructions and relocations.
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// CHECK: Disassembly of section .text_low:
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// CHECK-EMPTY:
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// CHECK-NEXT: _start:
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// CHECK-NEXT: 130: 00 00 00 eb bl #0 <__ARMV7PILongThunk_high>
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// CHECK-NEXT: 134: 1e ff 2f e1 bx lr
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// CHECK: __ARMV7PILongThunk_high:
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// CHECK-NEXT: 138: b8 ce 0f e3 movw r12, #65208
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// CHECK-NEXT: 13c: ff cf 4e e3 movt r12, #61439
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// 0x140 + 0xEFFF0000 + 0x0000FEB8 + 8 = 0xf0000000 = high
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// CHECK-NEXT: 140: 0f c0 8c e0 add r12, r12, pc
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// CHECK-NEXT: 144: 1c ff 2f e1 bx r12
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// CHECK: Disassembly of section .text_high:
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// CHECK-EMPTY:
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// CHECK-NEXT: high:
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// CHECK-NEXT: f0000000: 00 00 00 eb bl #0 <__ARMV7PILongThunk__start>
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// CHECK-NEXT: f0000004: 1e ff 2f e1 bx lr
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// CHECK: __ARMV7PILongThunk__start:
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// CHECK-NEXT: f0000008: 18 c1 00 e3 movw r12, #280
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// CHECK-NEXT: f000000c: 00 c0 41 e3 movt r12, #4096
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// 0xf0000010 + 0x10000000 + 0x0000118 + 8 = bits32(0x100000130),0x130 = _start
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// CHECK-NEXT: f0000010: 0f c0 8c e0 add r12, r12, pc
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// CHECK-NEXT: f0000014: 1c ff 2f e1 bx r12
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// Thumbv7a instructions and relocations
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// CHECK-THUMB: Disassembly of section .text_low:
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// CHECK-THUMB-EMPTY:
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// CHECK-THUMB-NEXT: _start:
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// CHECK-THUMB-NEXT: 130: 00 f0 02 f8 bl #4
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// CHECK-THUMB-NEXT: 134: 70 47 bx lr
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// CHECK-THUMB-NEXT: 136: d4 d4 bmi #-88
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// CHECK-THUMB: __ThumbV7PILongThunk_high:
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// CHECK-THUMB-NEXT: 138: 4f f6 bd 6c movw r12, #65213
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// CHECK-THUMB-NEXT: 13c: ce f6 ff 7c movt r12, #61439
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// 0x140 + 0xEFFF0000 + 0x0000FEBD + 4 = 0xf0000001 = high
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// CHECK-THUMB-NEXT: 140: fc 44 add r12, pc
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// CHECK-THUMB-NEXT: 142: 60 47 bx r12
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// CHECK-THUMB: Disassembly of section .text_high:
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// CHECK-THUMB-EMPTY:
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// CHECK-THUMB-NEXT: high:
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// CHECK-THUMB-NEXT: f0000000: 00 f0 02 f8 bl #4
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// CHECK-THUMB-NEXT: f0000004: 70 47 bx lr
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// CHECK-THUMB: __ThumbV7PILongThunk__start:
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// CHECK-THUMB-NEXT: f0000008: 40 f2 1d 1c movw r12, #285
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// CHECK-THUMB-NEXT: f000000c: c1 f2 00 0c movt r12, #4096
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// 0xf0000010 + 0x10000000 + 0x000011d +4 = bits32(0x100000131),0x131 = _start
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// CHECK-THUMB-NEXT: f0000010: fc 44 add r12, pc
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// CHECK-THUMB-NEXT: f0000012: 60 47 bx r12
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