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ld.lld: error: undefined symbol: __rc4 to __rc24 #450

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danacr opened this issue Feb 25, 2024 · 3 comments
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ld.lld: error: undefined symbol: __rc4 to __rc24 #450

danacr opened this issue Feb 25, 2024 · 3 comments

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@danacr
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danacr commented Feb 25, 2024

Hello,

When trying to use llvm-mos to port tinygo to the 6502 (tinygo-org/tinygo#4051) I started encountering the following issues. Could you please let us know why are these function called for a program that just prints a string?

package main

func main() {
	println("hello world")
}
❯ ../tinygo/build/tinygo build -target=6502 main.go
tinygo:ld.lld: error: undefined symbol: __rc4
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced 67 more times

tinygo:ld.lld: error: undefined symbol: __rc5
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:35 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:35)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_store_2)
>>> referenced 43 more times

tinygo:ld.lld: error: undefined symbol: __rc3
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:35 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:35)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_store_2)
>>> referenced by atomics_critical.go:42 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:42)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced 24 more times

tinygo:ld.lld: error: undefined symbol: __rc2
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced by atomics_critical.go:27 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:27)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_load_2)
>>> referenced 160 more times

tinygo:ld.lld: error: undefined symbol: __rc6
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_store_2)
>>> referenced by atomics_critical.go:35 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:35)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_store_2)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced 46 more times

tinygo:ld.lld: error: undefined symbol: __rc7
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced by atomics_critical.go:43 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:43)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced by atomics_critical.go:57 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:57)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_compare_exchange_2)
>>> referenced 30 more times

tinygo:ld.lld: error: undefined symbol: __rc9
>>> referenced by atomics_critical.go:42 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:42)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced 13 more times

tinygo:ld.lld: error: undefined symbol: __rc8
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS16)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_compare_exchange_2)
>>> referenced 24 more times

tinygo:ld.lld: error: undefined symbol: __rc10
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_compare_exchange_4)
>>> referenced 16 more times

tinygo:ld.lld: error: undefined symbol: __rc11
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:132 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:132)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(__atomic_compare_exchange_4)
>>> referenced 14 more times

tinygo:ld.lld: error: undefined symbol: __rc12
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced 20 more times

tinygo:ld.lld: error: undefined symbol: __rc13
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced 5 more times

tinygo:ld.lld: error: undefined symbol: __rc14
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced 4 more times

tinygo:ld.lld: error: undefined symbol: __rc15
>>> referenced by atomics_critical.go:131 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:131)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS32)
>>> referenced 4 more times

tinygo:ld.lld: error: undefined symbol: __rc16
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced 9 more times

tinygo:ld.lld: error: undefined symbol: __rc20
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced 19 more times

tinygo:ld.lld: error: undefined symbol: __rc21
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced 12 more times

tinygo:ld.lld: error: undefined symbol: __rc22
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced 2 more times

tinygo:ld.lld: error: undefined symbol: __rc23
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced 2 more times

tinygo:ld.lld: error: undefined symbol: __rc24
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:220 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:220)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced by atomics_critical.go:0 (/Users/danacristinii/Dev/tinygo/src/runtime/atomics_critical.go:0)
>>>               /Users/danacristinii/Library/Caches/tinygo/thinlto/llvmcache-E8123ADB7ED4283A7ED80802A183CCC09DF85A56:(runtime.doAtomicCAS64)
>>> referenced 2 more times

tinygo:ld.lld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)
failed to run tool: ld.lld
error: failed to link /var/folders/_j/3mkdqkjj3hscfyn2rvv6bss40000gn/T/tinygo3932693917/main: exit status 1
@asiekierka
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The undefined symbol: __rc24 errors refer to the imaginary registers mechanism. They are necessary to run any code compiled with LLVM-MOS, and should be provided by the linker script for the specific platform you're targeting - https://github.com/llvm-mos/llvm-mos-sdk has the entire default apparatus for doing so.

@danacr
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danacr commented Feb 25, 2024

thank you very much @asiekierka for the information! will get back to it :)

@danacr danacr closed this as completed Feb 25, 2024
@johnwbyrd
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https://llvm-mos.org/wiki/Imaginary_registers

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@asiekierka @johnwbyrd @danacr