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Diffstat (limited to 'test/ELF/ppc64-split-stack-prologue-adjust-success.s')
| -rw-r--r-- | test/ELF/ppc64-split-stack-prologue-adjust-success.s | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/test/ELF/ppc64-split-stack-prologue-adjust-success.s b/test/ELF/ppc64-split-stack-prologue-adjust-success.s new file mode 100644 index 000000000000..197df150c495 --- /dev/null +++ b/test/ELF/ppc64-split-stack-prologue-adjust-success.s @@ -0,0 +1,224 @@ +# REQUIRES: ppc + +# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %s -o %t1.o +# RUN: llvm-mc -filetype=obj -triple=powerpc64le-unknown-linux %p/Inputs/ppc64-no-split-stack.s -o %t2.o +# RUN: ld.lld --defsym __morestack=0x10010000 %t1.o %t2.o -o %t +# RUN: llvm-objdump -d %t | FileCheck %s + +# RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %s -o %t1.o +# RUN: llvm-mc -filetype=obj -triple=powerpc64-unknown-linux %p/Inputs/ppc64-no-split-stack.s -o %t2.o +# RUN: ld.lld --defsym __morestack=0x10010000 %t1.o %t2.o -o %t +# RUN: llvm-objdump -d %t | FileCheck %s + + .abiversion 2 + .section ".text" + + +# A caller with a stack that is small enough that the addis instruction +# from the split-stack prologue is unneeded, and after the prologue adjustment +# the stack size still fits whithin 16 bits. + .p2align 2 + .global caller_small_stack + .type caller_small_stack, @function +caller_small_stack: +.Lcss_gep: + addis 2, 12, .TOC.-.Lcss_gep@ha + addi 2, 2, .TOC.-.Lcss_gep@l + .localentry caller_small_stack, .-caller_small_stack + ld 0, -0x7040(13) + addi 12, 1, -32 + nop + cmpld 7, 12, 0 + blt- 7, .Lcss_alloc_more +.Lcss_body: + mflr 0 + std 0, 16(1) + stdu 1, -32(1) + bl nss_callee + addi 1, 1, 32 + ld 0, 16(1) + mtlr 0 + blr +.Lcss_alloc_more: + mflr 0 + std 0, 16(1) + bl __morestack + ld 0, 16(1) + mtlr 0 + blr + b .Lcss_body + .size caller_small_stack, .-caller_small_stack + +# CHECK-LABEL: caller_small_stack +# CHECK: ld 0, -28736(13) +# CHECK-NEXT: addi 12, 1, -16416 +# CHECK-NEXT: nop +# CHECK-NEXT: cmpld 7, 12, 0 +# CHECK-NEXT: bt- 28, .+36 + +# A caller that has a stack size that fits whithin 16 bits, but the adjusted +# stack size after prologue adjustment now overflows 16 bits needing both addis +# and addi instructions. + .p2align 2 + .global caller_med_stack + .type caller_med_stack, @function +caller_med_stack: +.Lcms_gep: + addis 2, 12, .TOC.-.Lcms_gep@ha + addi 12, 12, .TOC.-.Lcms_gep@l + .localentry caller_med_stack, .-caller_med_stack + ld 0, -0x7040(13) + addi 12, 1, -32764 + nop + cmpld 7, 12, 0 + blt- 7, .Lcms_alloc_more +.Lcms_body: + mflr 0 + std 0, 16(1) + stdu 1, -32764(1) + bl nss_callee + addi 1, 1, 32764 + ld 0, 16(1) + mtlr 0 + blr +.Lcms_alloc_more: + mflr 0 + std 0, 16(1) + bl __morestack + ld 0, 16(1) + mtlr 0 + blr + b .Lcms_body + .size caller_med_stack, .-caller_med_stack + +# A caller with a large enough stack frame that both the addis and +# addi instructions are used in the split-stack prologue. + .p2align 2 + .global caller_large_stack + .type caller_large_stack, @function +caller_large_stack: +.Lcls_gep: + addis 2, 12, .TOC.-.Lcls_gep@ha + addi 12, 12, .TOC.-.Lcls_gep@l + .localentry caller_large_stack, .-caller_large_stack + ld 0, -0x7040(13) + addis 12, 1, -1 + addi 12, 12, -32 + cmpld 7, 12, 0 + blt- 7, .Lcls_alloc_more +.Lcls_body: + mflr 0 + std 0, 16(1) + lis 0, -1 + addi 0, 0, -32 + stdux 1, 0, 1 + bl nss_callee + ld 1, 0(1) + ld 0, 16(1) + mtlr 0 + blr +.Lcls_alloc_more: + mflr 0 + std 0, 16(1) + bl __morestack + ld 0, 16(1) + mtlr 0 + blr + b .Lcls_body + .size caller_large_stack, .-caller_large_stack + +# CHECK-LABEL: caller_large_stack +# CHECK: ld 0, -28736(13) +# CHECK-NEXT: addis 12, 1, -1 +# CHECK-NEXT: addi 12, 12, -16416 +# CHECK-NEXT: cmpld 7, 12, 0 +# CHECK-NEXT: bt- 28, .+44 + +# A caller with a stack size that is larger then 16 bits, but aligned such that +# the addi instruction is unneeded. + .p2align 2 + .global caller_large_aligned_stack + .type caller_large_aligned_stack, @function +caller_large_aligned_stack: +.Lclas_gep: + addis 2, 12, .TOC.-.Lclas_gep@ha + addi 12, 12, .TOC.-.Lclas_gep@l + .localentry caller_large_aligned_stack, .-caller_large_aligned_stack + ld 0, -0x7040(13) + addis 12, 1, -2 + nop + cmpld 7, 12, 0 + blt- 7, .Lclas_alloc_more +.Lclas_body: + mflr 0 + std 0, 16(1) + lis 0, -2 + stdux 1, 0, 1 + bl nss_callee + ld 1, 0(1) + ld 0, 16(1) + mtlr 0 + blr +.Lclas_alloc_more: + mflr 0 + std 0, 16(1) + bl __morestack + ld 0, 16(1) + mtlr 0 + blr + b .Lclas_body + .size caller_large_aligned_stack, .-caller_large_aligned_stack + +# CHECK-LABEL: caller_large_aligned_stack +# CHECK: ld 0, -28736(13) +# CHECK-NEXT: addis 12, 1, -2 +# CHECK-NEXT: addi 12, 12, -16384 +# CHECK-NEXT: cmpld 7, 12, 0 +# CHECK-NEXT: bt- 28, .+40 + +# main only calls split-stack functions or __morestack so +# there should be no adjustment of its split-stack prologue. + .p2align 2 + .global main + .type main, @function +main: +.Lmain_gep: + addis 2, 12,.TOC.-.Lmain_gep@ha + addi 2, 2,.TOC.-.Lmain_gep@l + .localentry main,.-main + ld 0, -0x7040(13) + addi 12,1,-32 + nop + cmpld 7, 12,0 + blt- 7, .Lmain_morestack +.Lmain_body: + mflr 0 + std 0, 16(1) + stdu 1, -32(1) + bl caller_small_stack + nop + bl caller_med_stack + nop + bl caller_large_stack + nop + bl caller_large_aligned_stack + addi 1, 1, 32 + ld 0, 16(1) + mtlr 0 + blr +.Lmain_morestack: + mflr 0 + std 0, 16(1) + bl __morestack + ld 0, 16(1) + mtlr 0 + blr + b .Lmain_body + .size main,.-main +# CHECK-LABEL: main +# CHECK: ld 0, -28736(13) +# CHECK-NEXT: addi 12, 1, -32 +# CHECK-NEXT: nop +# CHECK-NEXT: cmpld 7, 12, 0 + + .section .note.GNU-split-stack,"",@progbits |