forked from OSchip/llvm-project
58 lines
1.9 KiB
ArmAsm
58 lines
1.9 KiB
ArmAsm
// REQUIRES: aarch64
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// RUN: llvm-mc -filetype=obj -triple=aarch64-none-linux %s -o %t.o
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// RUN: echo "SECTIONS { \
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// RUN: .text1 0x10000 : { *(.text.01) *(.text.02) *(.text.03) } \
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// RUN: .text2 0x8010000 : { *(.text.04) } } " > %t.script
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// RUN: ld.lld --script %t.script -fix-cortex-a53-843419 -verbose %t.o -o %t2 \
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// RUN: 2>&1 | FileCheck -check-prefix=CHECK-PRINT %s
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// RUN: llvm-objdump --no-show-raw-insn --triple=aarch64-linux-gnu -d %t2 | FileCheck %s
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/// %t2 is 128 Megabytes, so delete it early.
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// RUN: rm %t2
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/// Test cases for Cortex-A53 Erratum 843419 that involve interactions with
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/// range extension thunks. Both erratum fixes and range extension thunks need
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/// precise address information and after creation alter address information.
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.section .text.01, "ax", %progbits
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.balign 4096
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.globl _start
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.type _start, %function
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_start:
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bl far_away
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/// Thunk to far_away, size 16-bytes goes here.
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.section .text.02, "ax", %progbits
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.space 4096 - 28
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/// Erratum sequence will only line up at address 0 modulo 0xffc when
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/// Thunk is inserted.
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.section .text.03, "ax", %progbits
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.globl t3_ff8_ldr
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.type t3_ff8_ldr, %function
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t3_ff8_ldr:
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adrp x0, dat
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ldr x1, [x1, #0]
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ldr x0, [x0, :got_lo12:dat]
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ret
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// CHECK-PRINT: detected cortex-a53-843419 erratum sequence starting at 10FF8 in unpatched output.
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// CHECK: 0000000000010ff8 <t3_ff8_ldr>:
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// CHECK-NEXT: adrp x0, 0x8010000
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// CHECK-NEXT: ldr x1, [x1]
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// CHECK-NEXT: b 0x11008
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// CHECK-NEXT: ret
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// CHECK: 0000000000011008 <__CortexA53843419_11000>:
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// CHECK-NEXT: ldr x0, [x0, #8]
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// CHECK-NEXT: b 0x11004
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.section .text.04, "ax", %progbits
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.globl far_away
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.type far_away, function
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far_away:
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ret
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.section .data
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.globl dat
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dat: .quad 0
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