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fa2266ded0
Changes to ARM unwind opcode assembler:
* Fix multiple .save or .vsave directives. Besides, the
order is preserved now.
* For the directives which will generate multiple opcodes,
such as ".save {r0-r11}", the order of the unwind opcode
is fixed now, i.e. the registers with less encoding value
are popped first.
* Fix the $sp offset calculation. Now, we can use the
.setfp, .pad, .save, and .vsave directives at any order.
Changes to test cases:
* Add test cases to check the order of multiple opcodes
for the .save directive.
* Fix the incorrect $sp offset in the test case. The
stack pointer offset specified in the test case was
incorrect. (Changed test cases: ehabi-mc-section.ll and
ehabi-mc.ll)
* The opcode to restore $sp are slightly reordered. The
behavior are not changed, and the new output is same
as the output of GNU as. (Changed test cases:
eh-directive-pad.s and eh-directive-setfp.s)
llvm-svn: 183627
169 lines
3.5 KiB
ArmAsm
169 lines
3.5 KiB
ArmAsm
@ RUN: llvm-mc %s -triple=armv7-unknown-linux-gnueabi -filetype=obj -o - \
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@ RUN: | llvm-readobj -s -sd | FileCheck %s
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@ Check for different combination of .setfp, .pad, .save and .vsave.
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.syntax unified
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@-------------------------------------------------------------------------------
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@ TEST1: Check .pad before .setfp directive.
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@-------------------------------------------------------------------------------
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.section .TEST1
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.globl func1
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.type func1,%function
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.align 2
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.fnstart
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func1:
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.pad #12
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sub sp, sp, #12
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.setfp fp, sp, #8
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add fp, sp, #8
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sub sp, fp, #8
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add sp, sp, #12
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.fnend
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@ CHECK: Section {
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@ CHECK: Name: .ARM.extab.TEST1
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@ CHECK: SectionData (
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@ CHECK: 0000: 00000000 B0009B00 |........|
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@ CHECK: )
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@ CHECK: }
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@-------------------------------------------------------------------------------
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@ TEST2: Check .pad after .setfp directive.
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@-------------------------------------------------------------------------------
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.section .TEST2
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.globl func2
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.type func2,%function
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.align 2
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.fnstart
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func2:
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.setfp fp, sp, #8
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add fp, sp, #8
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.pad #12
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sub sp, sp, #12
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add sp, sp, #12
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sub sp, fp, #8
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.fnend
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@ CHECK: Section {
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@ CHECK: Name: .ARM.extab.TEST2
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@ CHECK: SectionData (
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@ CHECK: 0000: 00000000 B0419B00 |.....A..|
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@ CHECK: )
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@ CHECK: }
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@-------------------------------------------------------------------------------
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@ TEST3: Check .setfp, .pad, .setfp directive.
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@-------------------------------------------------------------------------------
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.section .TEST3
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.globl func3
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.type func3,%function
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.align 2
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.fnstart
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func3:
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@ prologue:
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.setfp fp, sp, #4
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add fp, sp, #4
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.pad #8
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sub sp, sp, #8
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.setfp fp, sp, #4
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add fp, sp, #4
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@ epilogue:
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add sp, fp, #4
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.fnend
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@ CHECK: Section {
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@ CHECK: Name: .ARM.extab.TEST3
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@ CHECK: SectionData (
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@ CHECK: 0000: 00000000 B0009B00 |........|
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@ CHECK: )
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@ CHECK: }
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@-------------------------------------------------------------------------------
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@ TEST4: Check ".setfp fp, sp" and ".setfp fp, fp" directive.
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@-------------------------------------------------------------------------------
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.section .TEST4
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.globl func4
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.type func4,%function
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.align 2
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.fnstart
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func4:
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@ prologue:
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.setfp fp, sp, #8
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add fp, sp, #8
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.setfp fp, fp, #8
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add fp, fp, #8
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@ epilogue:
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sub sp, fp, #16
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.fnend
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@ CHECK: Section {
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@ CHECK: Name: .ARM.extab.TEST4
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@ CHECK: SectionData (
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@ CHECK: 0000: 00000000 B0439B00 |.....C..|
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@ CHECK: )
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@ CHECK: }
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@-------------------------------------------------------------------------------
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@ TEST5: Check .setfp, .save, .setfp directive.
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@-------------------------------------------------------------------------------
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.section .TEST5
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.globl func5
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.type func5,%function
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.align 2
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.fnstart
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func5:
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@ prologue:
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.setfp fp, sp, #16
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add fp, sp, #16
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.save {r4, r5, r6, r7, r8}
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push {r4, r5, r6, r7, r8}
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.pad #8
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add sp, sp, #8
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.pad #8
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sub sp, sp, #8
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.save {r9, r10}
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push {r9, r10}
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.setfp fp, sp, #24
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add fp, sp, #24
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@ epilogue:
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sub sp, fp, #24
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pop {r9, r10}
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add sp, sp, #16
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pop {r4, r5, r6, r7, r8}
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.fnend
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@ CHECK: Section {
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@ CHECK: Name: .ARM.extab.TEST5
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@ CHECK: SectionData (
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@ CHECK: 0000: 00000000 80459B01 B0A40360 |.....E.....`|
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@ CHECK: )
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@ CHECK: }
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