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feat(asm): materialise frame-relative addresses the way the toolchain does

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Assisted-by: GLM 5.3 Flash
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petrbalvin committed 2026-10-07 21:34:30 +02:00
1 parent 1120a52a54
commit c1cef7b6e8
4 files changed
+399 -18
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asm/arm64_goroot_test.go
+2 -7
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@@ -55,12 +55,9 @@ var gorootARM64Packages = []string{
// not silently dropped: the gaps are findings, and closing one is a matter
// of removing its entry and watching the file pin itself.
var gorootARM64GapFiles = map[string]string{
"runtime/asm_arm64.s": "the unparenthesised NOSPLIT|NOFRAME flag list is not recognised, so the prologue and guard shapes diverge, and MOVD $sym+off(FP) materialises from ZR",
"runtime/asan_arm64.s": "MOVD $sym+off(FP) materialises MOV from ZR where the toolchain emits ADD $off, SP, Rd",
"runtime/libfuzzer_arm64.s": "MOVD $sym+off(FP) materialises MOV from ZR where the toolchain emits ADD $off, SP, Rd",
"runtime/msan_arm64.s": "MOVD $sym+off(FP) materialises MOV from ZR where the toolchain emits ADD $off, SP, Rd",
"runtime/asm_arm64.s": "the unparenthesised NOSPLIT|NOFRAME flag list is not recognised, so the prologue and guard shapes diverge",
"runtime/sys_linux_arm64.s": "the unparenthesised NOSPLIT|NOFRAME flag list is not recognised, so the prologue and guard shapes diverge (cgoSigtramp, clone)",
"runtime/tls_arm64.s": "a branch distance diverges: an earlier statement's expansion is sized differently",
"runtime/valgrind_arm64.s": "MOVD $sym+off(FP) materialises MOV from ZR where the toolchain emits ADD $off, SP, Rd",
"crypto/internal/fips140/aes/aes_arm64.s": "a tested immediate bit in a TBZ diverges",
"crypto/internal/fips140/aes/gcm/gcm_arm64.s": "an ADD immediate's value diverges mid-function",
"crypto/internal/fips140/nistec/p256_asm_arm64.s": "a branch distance and a logical-immediate lowering diverge",
@@ -68,9 +65,7 @@ var gorootARM64GapFiles = map[string]string{
"runtime/preempt_arm64.s": "the prologue shape for the function's frame diverges at the first word",
"runtime/race_arm64.s": "the flag list and prologue shape diverge at the first words",
"runtime/rt0_linux_arm64.s": "the #ifdef GOOS selection diverges: gasm keeps a word the toolchain drops",
"runtime/sys_linux_arm64.s": "MOVD $sym+off(FP) materialises MOV from ZR where the toolchain emits ADD $off, SP, Rd",
"internal/runtime/syscall/linux/asm_linux_arm64.s": "a branch distance diverges: an earlier statement's expansion is sized differently",
"reflect/asm_arm64.s": "MOVD $sym+off(FP) materialises MOV from ZR where the toolchain emits ADD $off, SP, Rd",
}
// gorootOtherGOOS matches the file names of the ports the linux build never