forked from OSchip/llvm-project
116 lines
3.6 KiB
ArmAsm
116 lines
3.6 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/x86-64-split-stack-extra.s -o %t2.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/x86-64-split-stack-main.s -o %t3.o
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# RUN: ld.lld --defsym __morestack=0x100 --defsym __morestack_non_split=0x200 %t1.o %t2.o %t3.o -o %t -z notext
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# RUN: llvm-objdump -d %t | FileCheck %s
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# Avoid duplicating the prologue for every test via macros.
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.macro prologue1 function_to_call
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.global prologue1_calls_\function_to_call
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.type prologue1_calls_\function_to_call,@function
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prologue1_calls_\function_to_call:
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cmp %fs:0x70,%rsp
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jae 1f
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callq __morestack
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retq
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1:
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# Various and duplicate calls to ensure every code path is taken.
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callq \function_to_call
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callq \function_to_call
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callq 1b
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callq non_function_text_symbol
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retq
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.size prologue1_calls_\function_to_call,. - prologue1_calls_\function_to_call
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.endm
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.macro prologue2 function_to_call register compare_amount
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.global prologue2_calls_\function_to_call\register
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.type prologue2_calls_\function_to_call\register,@function
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prologue2_calls_\function_to_call\register:
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lea -\compare_amount(%rsp),%\register
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cmp %fs:0x70,%\register
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jae 1f
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callq __morestack
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retq
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1:
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# Various and duplicate calls to ensure every code path is taken.
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callq \function_to_call
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callq \function_to_call
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callq 1b
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callq non_function_text_symbol
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retq
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.size prologue2_calls_\function_to_call\register,. - prologue2_calls_\function_to_call\register
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.endm
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.local foo
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foo:
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.section .text,"ax",@progbits
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.quad foo
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.text
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# For split-stack code calling split-stack code, ensure prologue v1 still
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# calls plain __morestack, and that any raw bytes written to the prologue
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# make sense.
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# CHECK: prologue1_calls_split:
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# CHECK-NEXT: cmp{{.*}}%fs:{{[^,]*}},{{.*}}%rsp
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# CHECK: jae{{.*$}}
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# CHECK-NEXT: callq{{.*}}<__morestack>
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prologue1 split
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# For split-stack code calling split-stack code, ensure prologue v2 still
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# calls plain __morestack, that any raw bytes written to the prologue
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# make sense, and that the register number is preserved.
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# CHECK: prologue2_calls_splitr10:
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# CHECK-NEXT: lea{{.*}} -512(%rsp),{{.*}}%r10
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# CHECK: cmp{{.*}}%fs:{{[^,]*}},{{.*}}%r{{[0-9]+}}
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# CHECK: jae{{.*}}
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# CHECK-NEXT: callq{{.*}}<__morestack>
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prologue2 split r10 0x200
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# CHECK: prologue2_calls_splitr11:
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# CHECK-NEXT: lea{{.*}} -256(%rsp),{{.*}}%r11
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# CHECK: cmp{{.*}}%fs:{{[^,]*}},{{.*}}%r{{[0-9]+}}
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# CHECK: jae{{.*}}
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# CHECK-NEXT: callq{{.*}}<__morestack>
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prologue2 split r11 0x100
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# For split-stack code calling non-split-stack code, ensure prologue v1
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# calls __morestack_non_split, and that any raw bytes written to the prologue
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# make sense.
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# CHECK: prologue1_calls_non_split:
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# CHECK-NEXT: stc{{.*$}}
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# CHECK-NEXT: nopl{{.*$}}
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# CHECK: jae{{.*$}}
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# CHECK-NEXT: callq{{.*}}<__morestack_non_split>
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prologue1 non_split
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# For split-stack code calling non-split-stack code, ensure prologue v2
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# calls __morestack_non_split, that any raw bytes written to the prologue
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# make sense, and that the register number is preserved
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# CHECK: prologue2_calls_non_splitr10:
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# CHECK-NEXT: lea{{.*}} -16640(%rsp),{{.*}}%r10
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# CHECK: cmp{{.*}}%fs:{{[^,]*}},{{.*}}%r10
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# CHECK: jae{{.*$}}
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# CHECK-NEXT: callq{{.*}}<__morestack_non_split>
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prologue2 non_split r10 0x100
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# CHECK: prologue2_calls_non_splitr11:
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# CHECK-NEXT: lea{{.*}} -16896(%rsp),{{.*}}%r11
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# CHECK: cmp{{.*}}%fs:{{[^,]*}},{{.*}}%r11
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# CHECK: jae{{.*$}}
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# CHECK-NEXT: callq{{.*}}<__morestack_non_split>
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prologue2 non_split r11 0x200
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.section .note.GNU-stack,"",@progbits
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.section .note.GNU-split-stack,"",@progbits
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