forked from OSchip/llvm-project
118 lines
4.8 KiB
ArmAsm
118 lines
4.8 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t
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// RUN: ld.lld %t -o %t2 2>&1
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// The output file is large, most of it zeroes. We dissassemble only the
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// parts we need to speed up the test and avoid a large output file
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// RUN: llvm-objdump -d %t2 -start-address=524288 -stop-address=524316 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK1 %s
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// RUN: llvm-objdump -d %t2 -start-address=1048576 -stop-address=1048584 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK2 %s
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// RUN: llvm-objdump -d %t2 -start-address=1572864 -stop-address=1572872 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK3 %s
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// RUN: llvm-objdump -d %t2 -start-address=5242884 -stop-address=5242894 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK4 %s
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// RUN: llvm-objdump -d %t2 -start-address=5767168 -stop-address=5767174 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK5 %s
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// RUN: llvm-objdump -d %t2 -start-address=16777220 -stop-address=16777240 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK6 %s
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// RUN: llvm-objdump -d %t2 -start-address=17825792 -stop-address=17825798 -triple=thumbv7a-linux-gnueabihf | FileCheck -check-prefix=CHECK7 %s
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// Test Range extension Thunks for the Thumb conditional branch instruction.
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// This instruction only has a range of 1Mb whereas all the other Thumb wide
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// Branch instructions have 16Mb range. We still place our pre-created Thunk
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// Sections at 16Mb intervals as conditional branches to a target defined
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// in a different section are rare.
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.syntax unified
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// Define a function aligned on a half megabyte boundary
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.macro FUNCTION suff
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.section .text.\suff\(), "ax", %progbits
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.thumb
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.balign 0x80000
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.globl tfunc\suff\()
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.type tfunc\suff\(), %function
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tfunc\suff\():
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bx lr
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.endm
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.globl _start
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_start:
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FUNCTION 00
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// Long Range Thunk needed for 16Mb range branch, can reach pre-created Thunk
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// Section
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bl tfunc33
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// CHECK1: Disassembly of section .text:
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// CHECK1-NEXT: tfunc00:
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// CHECK1-NEXT: 80000: 70 47 bx lr
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// CHECK1-NEXT: 80002: 7f f3 ff d7 bl #16252926
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// CHECK1: __Thumbv7ABSLongThunk_tfunc05:
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// CHECK1-NEXT: 80008: 40 f2 01 0c movw r12, #1
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// CHECK1-NEXT: 8000c: c0 f2 30 0c movt r12, #48
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// CHECK1-NEXT: 80010: 60 47 bx r12
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// CHECK1: __Thumbv7ABSLongThunk_tfunc00:
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// CHECK1-NEXT: 80012: 40 f2 01 0c movw r12, #1
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// CHECK1-NEXT: 80016: c0 f2 08 0c movt r12, #8
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// CHECK1-NEXT: 8001a: 60 47 bx r12
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FUNCTION 01
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// tfunc02 is within range of tfunc02
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beq.w tfunc02
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// tfunc05 is out of range, and we can't reach the pre-created Thunk Section
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// create a new one.
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bne.w tfunc05
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// CHECK2: tfunc01:
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// CHECK2-NEXT: 100000: 70 47 bx lr
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// CHECK2-NEXT: 100002: 3f f0 fd a7 beq.w #524282 <tfunc02>
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// CHECK2-NEXT: 100006: 7f f4 ff a7 bne.w #-524290 <__Thumbv7ABSLongThunk_tfunc05>
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FUNCTION 02
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// We can reach the Thunk Section created for bne.w tfunc05
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bne.w tfunc05
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beq.w tfunc00
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// CHECK3: 180000: 70 47 bx lr
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// CHECK3-NEXT: 180002: 40 f4 01 80 bne.w #-1048574 <__Thumbv7ABSLongThunk_tfunc05>
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// CHECK3-NEXT: 180006: 00 f4 04 80 beq.w #-1048568 <__Thumbv7ABSLongThunk_tfunc00>
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FUNCTION 03
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FUNCTION 04
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FUNCTION 05
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FUNCTION 06
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FUNCTION 07
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FUNCTION 08
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FUNCTION 09
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// CHECK4: __Thumbv7ABSLongThunk_tfunc03:
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// CHECK4-NEXT: 500004: 40 f2 01 0c movw r12, #1
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// CHECK4-NEXT: 500008: c0 f2 20 0c movt r12, #32
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// CHECK4-NEXT: 50000c: 60 47 bx r12
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FUNCTION 10
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// We can't reach any Thunk Section, create a new one
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beq.w tfunc03
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// CHECK5: tfunc10:
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// CHECK5-NEXT: 580000: 70 47 bx lr
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// CHECK5-NEXT: 580002: 3f f4 ff a7 beq.w #-524290 <__Thumbv7ABSLongThunk_tfunc03>
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FUNCTION 11
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FUNCTION 12
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FUNCTION 13
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FUNCTION 14
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FUNCTION 15
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FUNCTION 16
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FUNCTION 17
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FUNCTION 18
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FUNCTION 19
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FUNCTION 20
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FUNCTION 21
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FUNCTION 22
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FUNCTION 23
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FUNCTION 24
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FUNCTION 25
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FUNCTION 26
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FUNCTION 27
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FUNCTION 28
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FUNCTION 29
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FUNCTION 30
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FUNCTION 31
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// CHECK6: __Thumbv7ABSLongThunk_tfunc33:
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// CHECK6-NEXT: 1000004: 40 f2 01 0c movw r12, #1
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// CHECK6-NEXT: 1000008: c0 f2 10 1c movt r12, #272
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// CHECK6-NEXT: 100000c: 60 47 bx r12
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// CHECK6: __Thumbv7ABSLongThunk_tfunc00:
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// CHECK6-NEXT: 100000e: 40 f2 01 0c movw r12, #1
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// CHECK6-NEXT: 1000012: c0 f2 08 0c movt r12, #8
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// CHECK6-NEXT: 1000016: 60 47 bx r12
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FUNCTION 32
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FUNCTION 33
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// We should be able to reach an existing ThunkSection.
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b.w tfunc00
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// CHECK7: tfunc33:
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// CHECK7-NEXT: 1100000: 70 47 bx lr
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// CHECK7-NEXT: 1100002: 00 f7 04 b8 b.w #-1048568 <__Thumbv7ABSLongThunk_tfunc00>
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