87383e408d
See http://lists.llvm.org/pipermail/llvm-dev/2020-April/140549.html For the record, GNU ld changed to 64k max page size in 2014 https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=7572ca8989ead4c3425a1500bc241eaaeffa2c89 "[RFC] ld/ARM: Increase maximum page size to 64kB" Android driver forced 4k page size in AArch64 (D55029) and ARM (D77746). A binary linked with max-page-size=4096 does not run on a system with a higher page size configured. There are some systems out there that do this and it leads to the binary getting `Killed!` by the kernel. In the non-linker-script cases, when linked with -z noseparate-code (default), the max-page-size increase should not cause any size difference. There may be some VMA usage differences, though. Reviewed By: psmith, MaskRay Differential Revision: https://reviews.llvm.org/D77330
42 lines
1.8 KiB
ArmAsm
42 lines
1.8 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t
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// RUN: ld.lld %t -o %t2
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// RUN: llvm-objdump -d --no-show-raw-insn --triple=thumbv7a-none-linux-gnueabi --start-address=0x21000 --stop-address=0x21006 %t2 | FileCheck --check-prefix=CHECK1 %s
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// RUN: llvm-objdump -d --no-show-raw-insn --triple=thumbv7a-none-linux-gnueabi --start-address=0x22004 --stop-address=0x22008 %t2 | FileCheck --check-prefix=CHECK2 %s
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// RUN: llvm-objdump -d --no-show-raw-insn --triple=thumbv7a-none-linux-gnueabi --start-address=0x1021ff8 --stop-address=0x1021ffc %t2 | FileCheck --check-prefix=CHECK3 %s
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// RUN: llvm-objdump -d --no-show-raw-insn --triple=thumbv7a-none-linux-gnueabi --start-address=0x2012ff8 --stop-address=0x2021ffc %t2 | FileCheck --check-prefix=CHECK4 %s
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// RUN: llvm-objdump -d --no-show-raw-insn --triple=thumbv7a-none-linux-gnueabi --start-address=0x3021fec --stop-address=0x3021ff6 %t2 | FileCheck --check-prefix=CHECK5 %s
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.syntax unified
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.balign 0x1000
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.thumb
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.text
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.globl _start
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.type _start, %function
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_start:
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bx lr
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.space 0x1000
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// CHECK1: <_start>:
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// CHECK1-NEXT: 21000: bx lr
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// CHECK1: <$d.1>:
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// CHECK1-NEXT: 21002: 00 00 00 00 .word 0x00000000
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// CHECK2: <__Thumbv7ABSLongThunk__start>:
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// CHECK2-NEXT: 22004: b.w #-4104 <_start>
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/// Gigantic section where we need a ThunkSection either side of it
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.section .text.large1, "ax", %progbits
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.balign 4
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.space (16 * 1024 * 1024) - 16
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bl _start
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.space (16 * 1024 * 1024) - 4
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bl _start
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.space (16 * 1024 * 1024) - 16
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// CHECK3: 1021ff8: bl #-16777208
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// CHECK4: 2021ff8: bl #16777200
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// CHECK5: <__Thumbv7ABSLongThunk__start>:
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// CHECK5-NEXT: 3021fec: movw r12, #4097
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// CHECK5-NEXT: 3021ff0: movt r12, #2
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// CHECK5-NEXT: 3021ff4: bx r12
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