2018-01-17 14:29:21 -08:00
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// REQUIRES: arm
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// RUN: llvm-mc -filetype=obj -triple=thumbv7a-none-linux-gnueabi %s -o %t
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// RUN: echo "SECTIONS { \
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// RUN: .text 0x100000 : { *(.text) } \
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// RUN: .textl : { *(.text_l0*) *(.text_l1*) *(.text_l2*) *(.text_l3*) } \
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// RUN: .texth : { *(.text_h0*) *(.text_h1*) *(.text_h2*) *(.text_h3*) } \
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// RUN: }" > %t.script
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// RUN: ld.lld --script %t.script %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=1048576 -stop-address=1048594 -triple=thumbv7a-linux-gnueabihf | FileCheck --check-prefix=CHECK1 %s
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// RUN: llvm-objdump -d %t2 -start-address=2097152 -stop-address=2097160 -triple=thumbv7a-linux-gnueabihf | FileCheck --check-prefix=CHECK2 %s
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// RUN: llvm-objdump -d %t2 -start-address=11534340 -stop-address=11534350 -triple=thumbv7a-linux-gnueabihf | FileCheck --check-prefix=CHECK3 %s
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// RUN: llvm-objdump -d %t2 -start-address=34603008 -stop-address=34603034 -triple=thumbv7a-linux-gnueabihf | FileCheck --check-prefix=CHECK4 %s
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// RUN: llvm-objdump -d %t2 -start-address=35651584 -stop-address=35651598 -triple=thumbv7a-linux-gnueabihf | FileCheck --check-prefix=CHECK5 %s
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// RUN: llvm-objdump -d %t2 -start-address=68157440 -stop-address=68157472 -triple=thumbv7a-linux-gnueabihf | FileCheck --check-prefix=CHECK6 %s
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// Test the range extensions in a linker script where there are several
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// OutputSections requiring range extension Thunks. We should be able to reuse
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// Thunks between OutputSections but our placement of new Thunks is done on a
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// per OutputSection basis
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.syntax unified
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// Define a function that we can match with .text_l* aligned on a megabyte // boundary
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.macro FUNCTIONL suff
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.section .text_l\suff\(), "ax", %progbits
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.thumb
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.balign 0x100000
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.globl tfuncl\suff\()
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.type tfuncl\suff\(), %function
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tfuncl\suff\():
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bx lr
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.endm
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// Define a function that we can match with .text_h* aligned on a megabyte
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// boundary
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.macro FUNCTIONH suff
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.section .text_h\suff\(), "ax", %progbits
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.thumb
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.balign 0x100000
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.globl tfunch\suff\()
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.type tfunch\suff\(), %function
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tfunch\suff\():
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bx lr
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.endm
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.section .text, "ax", %progbits
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.thumb
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.globl _start
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_start:
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bl tfuncl00
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// Expect a range extension thunk in .text OutputSection
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bl tfunch31
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// CHECK1: Disassembly of section .text:
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// CHECK1-NEXT: _start:
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// CHECK1-NEXT: 100000: ff f0 fe ff bl #1048572
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// CHECK1-NEXT: 100004: 00 f0 00 f8 bl #0
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// CHECK1: __Thumbv7ABSLongThunk_tfunch31:
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// CHECK1-NEXT: 100008: 40 f2 01 0c movw r12, #1
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// CHECK1-NEXT: 10000c: c0 f2 10 4c movt r12, #1040
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// CHECK1-NEXT: 100010: 60 47 bx r12
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FUNCTIONL 00
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// Create a range extension thunk in .textl
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bl tfuncl24
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// We can reuse existing thunk in .text
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bl tfunch31
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// CHECK2: Disassembly of section .textl:
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// CHECK2-NEXT: tfuncl00:
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// CHECK2-NEXT: 200000: 70 47 bx lr
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// CHECK2-NEXT: 200002: ff f0 ff df bl #9437182
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// CHECK2-NEXT: 200006: ff f6 ff ff bl #-1048578
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FUNCTIONL 01
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FUNCTIONL 02
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FUNCTIONL 03
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FUNCTIONL 04
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FUNCTIONL 05
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FUNCTIONL 06
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FUNCTIONL 07
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FUNCTIONL 08
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FUNCTIONL 09
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// CHECK3: __Thumbv7ABSLongThunk_tfuncl24:
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2018-08-04 14:47:16 -07:00
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// CHECK3-NEXT: b00004: ff f2 fc 97 b.w #15728632 <tfuncl24>
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2018-01-17 14:29:21 -08:00
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FUNCTIONL 10
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FUNCTIONL 11
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FUNCTIONL 12
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FUNCTIONL 13
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FUNCTIONL 14
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FUNCTIONL 15
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FUNCTIONL 16
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FUNCTIONL 17
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FUNCTIONL 18
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FUNCTIONL 19
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FUNCTIONL 20
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FUNCTIONL 21
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FUNCTIONL 22
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FUNCTIONL 23
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FUNCTIONL 24
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FUNCTIONL 25
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FUNCTIONL 26
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FUNCTIONL 27
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FUNCTIONL 28
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FUNCTIONL 29
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FUNCTIONL 30
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FUNCTIONL 31
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// Create range extension thunks in .textl
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bl tfuncl00
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bl tfuncl24
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// Shouldn't need a thunk
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bl tfunch00
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// CHECK4: 2100002: 00 f0 05 f8 bl #10
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// CHECK4-NEXT: 2100006: ff f4 fb f7 bl #-7340042
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// CHECK4-NEXT: 210000a: ff f0 f9 ff bl #1048562
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// CHECK4: __Thumbv7ABSLongThunk_tfuncl00:
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// CHECK4-NEXT: 2100010: 40 f2 01 0c movw r12, #1
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// CHECK4-NEXT: 2100014: c0 f2 20 0c movt r12, #32
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// CHECK4-NEXT: 2100018: 60 47 bx r12
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FUNCTIONH 00
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// Can reuse existing thunks in .textl
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bl tfuncl00
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bl tfuncl24
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// Shouldn't need a thunk
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bl tfuncl31
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// CHECK5: Disassembly of section .texth:
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// CHECK5-NEXT: tfunch00:
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// CHECK5-NEXT: 2200000: 70 47 bx lr
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// CHECK5-NEXT: 2200002: 00 f7 05 f8 bl #-1048566
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// CHECK5-NEXT: 2200006: ff f7 fb df bl #-8388618
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// CHECK5-NEXT: 220000a: ff f6 f9 ff bl #-1048590
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FUNCTIONH 01
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FUNCTIONH 02
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FUNCTIONH 03
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FUNCTIONH 04
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FUNCTIONH 05
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FUNCTIONH 06
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FUNCTIONH 07
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FUNCTIONH 08
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FUNCTIONH 09
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FUNCTIONH 10
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FUNCTIONH 11
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FUNCTIONH 12
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FUNCTIONH 13
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FUNCTIONH 14
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FUNCTIONH 15
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FUNCTIONH 16
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FUNCTIONH 17
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FUNCTIONH 18
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FUNCTIONH 19
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FUNCTIONH 20
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FUNCTIONH 21
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FUNCTIONH 22
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FUNCTIONH 23
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FUNCTIONH 24
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FUNCTIONH 25
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FUNCTIONH 26
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FUNCTIONH 27
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FUNCTIONH 28
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FUNCTIONH 29
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FUNCTIONH 30
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FUNCTIONH 31
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// expect Thunks in .texth
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bl tfuncl00
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bl tfunch00
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// CHECK6: tfunch31:
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// CHECK6-NEXT: 4100000: 70 47 bx lr
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// CHECK6-NEXT: 4100002: 00 f0 03 f8 bl #6
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// CHECK6-NEXT: 4100006: 00 f0 06 f8 bl #12
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// CHECK6: __Thumbv7ABSLongThunk_tfuncl00:
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// CHECK6-NEXT: 410000c: 40 f2 01 0c movw r12, #1
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// CHECK6-NEXT: 4100010: c0 f2 20 0c movt r12, #32
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// CHECK6-NEXT: 4100014: 60 47 bx r12
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// CHECK6: __Thumbv7ABSLongThunk_tfunch00:
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// CHECK6-NEXT: 4100016: 40 f2 01 0c movw r12, #1
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// CHECK6-NEXT: 410001a: c0 f2 20 2c movt r12, #544
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// CHECK6-NEXT: 410001e: 60 47 bx r12
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