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a35398d1bb
This allows using custom export thunks instead of default generated ones. This is useful for performance in cases where transferring between JIT and ARM64EC code is more expensive than just emulating the whole function (but it's still useful to have ARM64EC version so that ARM64EC callers don't call into the emulator). It's also useful for compatibility, where applications have specific expectations about function contents (like syscall functions).
83 lines
2.5 KiB
ArmAsm
83 lines
2.5 KiB
ArmAsm
# REQUIRES: aarch64, x86
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# RUN: split-file %s %t.dir && cd %t.dir
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# Test that metadata is generated when a custom export thunk is supplied.
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# RUN: llvm-mc -filetype=obj -triple=arm64ec-windows func.s -o func.obj
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# RUN: llvm-mc -filetype=obj -triple=arm64ec-windows hp-func.s -o hp-func.obj
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# RUN: llvm-mc -filetype=obj -triple=x86_64-windows thunk.s -o thunk.obj
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# RUN: llvm-mc -filetype=obj -triple=arm64ec-windows %S/Inputs/loadconfig-arm64ec.s -o loadconfig-arm64ec.obj
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# RUN: lld-link -out:out.dll -machine:arm64ec func.obj thunk.obj loadconfig-arm64ec.obj -dll -noentry "-export:#func,EXPORTAS,func"
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# RUN: llvm-objdump -d out.dll | FileCheck --check-prefixes=DISASM,DISASM-EXP %s
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# DISASM: Disassembly of section .text:
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# DISASM-EMPTY:
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# DISASM-NEXT: 0000000180001000 <.text>:
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# DISASM-NEXT: 180001000: 52800040 mov w0, #0x2 // =2
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# DISASM-NEXT: 180001004: d65f03c0 ret
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# DISASM-NEXT: ...
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# DISASM-EXP-EMPTY:
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# DISASM-EXP-NEXT: 0000000180002000 <func>:
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# DISASM-NEXT: 180002000: b8 03 00 00 00 movl $0x3, %eax
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# DISASM-NEXT: 180002005: c3 retq
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# RUN: llvm-objdump -p out.dll | FileCheck --check-prefix=EXPORT %s
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# EXPORT: Ordinal RVA Name
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# EXPORT-NEXT: 1 0x2000 func
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# RUN: llvm-readobj --coff-load-config out.dll | FileCheck --check-prefix=CHPE %s
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# CHPE: CodeMap [
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# CHPE-NEXT: 0x1000 - 0x1008 ARM64EC
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# CHPE-NEXT: 0x2000 - 0x2006 X64
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# CHPE-NEXT: ]
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# CHPE-NEXT: CodeRangesToEntryPoints [
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# CHPE-NEXT: 0x2000 - 0x2006 -> 0x2000
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# CHPE-NEXT: ]
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# CHPE-NEXT: RedirectionMetadata [
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# CHPE-NEXT: 0x2000 -> 0x1000
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# CHPE-NEXT: ]
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# RUN: lld-link -out:out2.dll -machine:arm64ec hp-func.obj thunk.obj loadconfig-arm64ec.obj -dll -noentry
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# RUN: llvm-objdump -d out2.dll | FileCheck --check-prefix=DISASM %s
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# RUN: llvm-readobj --coff-load-config out2.dll | FileCheck --check-prefix=CHPE %s
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#--- func.s
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.globl "#func"
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.p2align 2, 0x0
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"#func":
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mov w0, #2
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ret
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#--- hp-func.s
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.section .text,"xr",discard,"#func$hp_target"
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.globl "#func$hp_target"
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.p2align 2, 0x0
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"#func$hp_target":
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mov w0, #2
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ret
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.def "EXP+#func"
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.scl 2
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.type 32
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.endef
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.weak func
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.set func, "EXP+#func"
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.weak "#func"
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.set "#func", "#func$hp_target"
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.data
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.rva func
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#--- thunk.s
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.def "EXP+#func"
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.scl 2
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.type 32
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.endef
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.section .wowthk$aa,"xr",discard,"EXP+#func"
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.globl "EXP+#func"
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.p2align 2, 0x0
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"EXP+#func":
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movl $3, %eax
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retq
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