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TheRock/compiler/amd-llvm/llvm/test/MC/ELF/cfi-sframe-encoding.s
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

86 lines
2.6 KiB
ArmAsm

# RUN: llvm-mc --filetype=obj --gsframe -triple x86_64 %s -o %t.o
# RUN: llvm-readelf --sframe %t.o | FileCheck %s
# Tests selection for the proper FDE AddrX encoding at the boundaries
# between uint8_t, uint16_t, and uint32_t. The first FRE always fits
# anywhere, because its address-offset is zero. The last FRE
# determines the smallest AddrX it is possible to use. Align
# functions to 1024 to make it easier to interpet offsets.
.cfi_sections .sframe
.align 1024
fde0_uses_addr1:
# CHECK: FuncDescEntry [0] {
# CHECK: Start FRE Offset: 0x0
# CHECK-NEXT: Num FREs: 2
# CHECK: FRE Type: Addr1 (0x0)
.cfi_startproc
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x0
# CHECK-NEXT: Return Address Signed: No
# CHECK-NEXT: Offset Size: B1 (0x0)
# CHECK-NEXT: Base Register: SP (0x1)
# CHECK-NEXT: CFA Offset: 8
# CHECK-NEXT: RA Offset: -8
# CHECK-NEXT: }
.fill 0xFF
.cfi_def_cfa_offset 16
# CHECK-NEXT: Frame Row Entry {
# CHECK-NEXT: Start Address: 0xFF
# CHECK-NEXT: Return Address Signed: No
# CHECK-NEXT: Offset Size: B1 (0x0)
# CHECK-NEXT: Base Register: SP (0x1)
# CHECK-NEXT: CFA Offset: 16
# CHECK-NEXT: RA Offset: -8
nop
.cfi_endproc
.align 1024
fde1_uses_addr2:
# CHECK: FuncDescEntry [1] {
# CHECK: Start FRE Offset: 0x6
# CHECK-NEXT: Num FREs: 2
# CHECK: FRE Type: Addr2 (0x1)
.cfi_startproc
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x400
.fill 0xFF + 1
.cfi_def_cfa_offset 16
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x500
.cfi_endproc
.align 1024
fde2_uses_addr2:
# CHECK: FuncDescEntry [2] {
# CHECK: Start FRE Offset: 0xE
# CHECK-NEXT: Num FREs: 2
# CHECK: FRE Type: Addr2 (0x1)
.cfi_startproc
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x800
.fill 0xFFFF
.cfi_def_cfa_offset 16
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x107FF
nop
.cfi_endproc
.align 1024
fde3_uses_addr4:
# CHECK: FuncDescEntry [3] {
# CHECK: Start FRE Offset: 0x16
# CHECK-NEXT: Num FREs: 2
# CHECK: FRE Type: Addr4 (0x2)
.cfi_startproc
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x10800
.fill 0xFFFF + 1
# CHECK: Frame Row Entry {
# CHECK-NEXT: Start Address: 0x20800
.cfi_def_cfa_offset 16
nop
.cfi_endproc